Table of Contents

                       

                        Executive Summary                                                              

1                      Introduction                                                                           

1.1                   Background                                                                            

1.2                   Scope of This Report                                                          

1.3                   Organization Structure                                                   

1.4                   Summary of Construction Works                                

1.5                   Summary of EM&A Programme Requirements          

2                      EM&A RESULTS                                                                          

2.1                   Air Quality                                                                                

2.2                   Noise Monitoring                                                                   

2.3                   Water Quality Monitoring                                                

2.4                   Dolphin Monitoring                                                              

2.5                   Bored Piling Monitoring                                                    

2.6                   Post-Translocation Coral Monitoring                     

2.7                   EM&A Site Inspection                                                            

2.8                   Waste Management Status                                              

2.9                   Environmental Licenses and Permits                         

2.10                 Implementation Status of Environmental Mitigation Measures                                                                                  

2.11                 Summary of Exceedances of the Environmental Quality Performance Limit                                               

2.12                 Summary of Complaints, Notification of Summons and Successful Prosecutions                                                

3                      Conclusion and Recommendations                              


List of Appendices

Appendix A      Project Organization for Environmental Works

Appendix B      Implementation Schedule of Environmental Mitigation Measures (EMIS)

Appendix C     Summary of Action and Limit Levels

Appendix D     Impact Air Quality Monitoring Result in Graphical Presentation

Appendix E      Impact Noise Monitoring Results in Graphical Presentation

Appendix F    Impact Water Quality Monitoring Results in Graphical Presentation

Appendix G     Event Action Plan

Appendix H     Summary of Waste Flow Table

Appendix I      Cumulative Statistics on Exceedances, Complaints, Notifications of Summons and Successful Prosecutions

 

 

Executive Summary

Under Contract No. HY/2012/07, Gammon Construction Limited (GCL) is commissioned by the Highways Department (HyD) to undertake the design and construction of the Southern Connection Viaduct Section of the Tuen Mun – Chek Lap Kok Link Project (TM-CLK Link Project) while AECOM Asia Company Limited was appointed by HyD as the Supervising Officer.  For implementation of the environmental monitoring and audit (EM&A) programme under the Contract, ERM-Hong Kong, Limited (ERM) has been appointed as the Environmental Team (ET).  Ramboll Hong Kong Ltd. was employed by the HyD as the Independent Environmental Checker (IEC) and Environmental Project Office (ENPO) in accordance with Environmental Permit No. EP-354/2009/A.  Further applications for variation of environmental permit (VEP), EP-354/2009/B, EP-354/2009/C and EP-354/2009/D, were granted on 28 January 2014, 10 December 2014 and 13 March 2015, respectively.

The southern landfall of TM-CLK Link lies alongside the Hong Kong - Zhuhai - Macao Bridge Hong Kong Boundary Crossing Facilities (HKBCF) where a reclamation area is constructed by Contract No. HY/2010/02 under Environmental Permit No. EP-353/2009/K and EP-354/2009/D.  Upon the agreement and confirmation between the Supervising Officer Representatives and Contractors of HY/2010/02 and HY/2012/07 in September 2015, part of the reclamation area for southern landfall under EP-353/2009/K and EP-354/2009/D was handed-over to Contract No. HY/2012/07.  Another part of the southern landfall area under EP-354/2009/D was handed-over to Contract No. HY/2012/07 after completion of reclamation works by Contract No. HY/2010/02 in June 2016.

The construction phase of the Contract commenced on 31 October 2013.  The impact monitoring of the EM&A programme, including air quality, noise, water quality and marine ecological monitoring as well as environmental site inspections, commenced on 31 October 2013. 

Construction works were substantially completed on 31 July 2019.  Notifications of temporary suspension of air quality monitoring and noise monitoring have been approved by EPD on 28 August 2019.

Marine works were substantially completed on 21 August 2019. Notification of temporary suspension of water quality monitoring has been approved by EPD on 30 August 2019.

Termination proposal for construction EM&A programme was approved by EPD on 16 March 2020.  The construction phase EM&A programme of the Contract has been terminated since 16 March 2020. 

This is the Final EM&A Report presenting the EM&A works carried out during the period from 31 October 2013 to 16 March 2020 for the Southern Connection Viaduct Section in accordance with the Updated EM&A Manual of the TM-CLK Link Project. 

Major activities undertaken during the course of this Contract included:

Marine-based Works

·              Survey towers erection;

·              Filling platform at seawall;

·              Installation and uninstallation of marine piling platform;

·              Construction of rock fill platform;

·              Marine piling;

·              Construction and installation of pile caps;

·              Marine ground investigation (GI) and laboratory testing;

·              Additional marine GI and laboratory testing;

·              Installation of pier head, pier head segment and deck segment;

·              Launching gantry assembly and launching gantry operation;

·              Pier construction;

·              Construction of marine section of berth at Southern Landfall;

·              Construction of underslung truss scheme (no additional seabed will be occupied other than those assumed in the approved EIA Report); and

·              Reinstatement of seawall at seafront.

Land-based Works

·           Tree survey, felling and transplanting;

·           Channel re-construction at Area 1;

·           Site formation of workshop at Area 1;

·           Site offices erection at Area 5;

·           Construct temporary road at CEDD track for piling;

·           Temporary access bridge;

·           Fence installation and relocation at Area 2, Viaducts A, B, C & D;

·           Satellite container offices erection along seawall;

·           Land piling at Viaducts B, C & D;

·           Launching gantry operation;

·           Construction and installation of pile caps;

·           Construction of pile cap superstructure;

·           Installation of pier head, pier head segment and deck segments;

·           Land piling;

·           Pier construction;

·           Pre-drilling works;

·           Piling platform installation at Viaducts B, C, D & E;

·           Additional land GI, trial pits & lab testing;

·           Re-alignment of Cheung Tung Road;

·           Relocation of MTR fence;

·           Utility surveys;

·           Slope works;

·           Drainage works;

·           Construction of land section of berth at Southern Landfall;

·           Road works along North Lantau Highway;

·           Asphalt paving;

·           Construction of sign gantries, light poles and street furniture;

·           Parapet and barriers installation;

·           Abutment construction; and

·           Landscaping works at NLH/CTR and HKBCF.

A summary of monitoring and audit activities conducted during the course of this Contract is listed below:

24-hour TSP monitoring                         399 sessions at ASR9A/ASR8A

                                                                391 sessions at ASR9C/ASR8 /ASR9[CW1] 

1-hour TSP monitoring                           402 sessions at ASR9A/ASR8A

                                                                392 sessions at ASR9C/ASR8 /ASR9[CW2] 

Noise monitoring                                     400 sessions at NSR1/ NSR1A[CW3] 

Water quality monitoring                                 883 sessions

Dolphin monitoring                                                 152 sessions

Joint environmental site inspection                       330 sessions

Post-translocation coral monitoring                        4 sessions

Bored piling monitoring                                           1 session

Post-construction water quality monitoring            12 sessions

Breaches of Action and Limit Levels for Air Quality

2 Limit Level exceedances of 1-hour TSP and 2 Action Level exceedances of 24-hour TSP were recorded for air quality monitoring during the impact monitoring period

Breaches of Action and Limit Levels for Noise

No exceedance of Action and Limit Levels was recorded for construction noise monitoring during the impact monitoring period.

Breaches of Action and Limit Levels for Water Quality

18 Action Level and 1 Limit Level exceedances of Suspended Solids (SS), 1 Action Level and 1 Limit Level exceedances of Turbidity and 253 Action Level and 25 Limit Level exceedances of Dissolved Oxygen (DO) were recorded for water quality monitoring during the impact monitoring period.

Impact Dolphin Monitoring

11 Action Level and 19 Limit Level exceedances were recorded for dolphin monitoring during the impact monitoring period.

Post-Translocation Coral Monitoring

No exceedance of Action and Limit Levels was recorded for post-translocation coral monitoring.  The results were detailed in the First to Fourth Quarterly Post- Translocation Coral Monitoring Report and were submitted under separate covers.

Bored Piling Monitoring

Action and Limit Level Exceedances were recorded in the Underwater Noise and Acoustic Behavioural Monitoring.  The results were detailed in the Impact Monitoring Report for Underwater Noise and Dolphin Acoustic Behavioural Monitoring and Impact Monitoring Report for Land-based Dolphin Behavioural and Movement Monitoring submitted under separate covers.

Environmental Complaints, Non-compliance & Summons

14 environmental complaints were recorded during the impact monitoring period.  There was no notification of summons or successful prosecution recorded.

1                                    Introduction

1.1                               Background

According to the findings of the Northwest New Territories (NWNT) Traffic and Infrastructure Review conducted by the Transport Department, Tuen Mun Road, Ting Kau Bridge, Lantau Link and North Lantau Highway would be operating beyond capacity after 2016.  This forecast has been based on the estimated increase in cross boundary traffic, developments in the Northwest New Territories (NWNT), and possible developments in North Lantau, including the Airport developments, the Lantau Logistics Park (LLP) and the Hong Kong – Zhuhai – Macao Bridge (HZMB).  In order to cope with the anticipated traffic demand, two new road sections between NWNT and North Lantau – Tuen Mun – Chek Lap Kok Link (TM-CLKL) and Tuen Mun Western Bypass (TMWB) are proposed.

An Environmental Impact Assessment (EIA) of TM-CLKL (the Project) was prepared in accordance with the EIA Study Brief (No. ESB-175/2007) and the Technical Memorandum of the Environmental Impact Assessment Process (EIAO-TM).  The EIA Report was submitted under the Environmental Impact Assessment Ordinance (EIAO) in August 2009.  Subsequent to the approval of the EIA Report (EIAO Register Number: AEIAR-146/2009), an Environmental Permit (EP-354/2009) for TM-CLKL was granted by the Director of Environmental Protection (DEP) on 4 November 2009, and EP variation (EP-354/2009/A) was issued on 8 December 2010.  

Under Contract No. HY/2012/07, Gammon Construction Limited (GCL) is commissioned by the Highways Department (HyD) to undertake the design and construction of the Southern Connection Viaduct Section of TM-CLKL (“the Contract”) while AECOM Asia Company Limited was appointed by HyD as the Supervising Officer.  For implementation of the environmental monitoring and audit (EM&A) programme under the Contract, ERM-Hong Kong, Limited (ERM) has been appointed as the Environmental Team (ET).  Ramboll Hong Kong Ltd. was employed by HyD as the Independent Environmental Checker (IEC) and Environmental Project Office (ENPO) in accordance with Environmental Permit No. EP-354/2009/A.  Further applications for variation of environmental permit (VEP), EP-354/2009/B, EP-354/2009/C and EP-354/2009/D, were granted on 28 January 2014, 10 December 2014 and 13 March 2015, respectively.

The southern landfall of TM-CLK Link lies alongside the Hong Kong - Zhuhai - Macao Bridge Hong Kong Boundary Crossing Facilities (HKBCF) where a reclamation area is constructed by Contract No. HY/2010/02 under Environmental Permit No. EP-353/2009/K and EP-354/2009/D.  Upon the agreement and confirmation between the Supervising Officer Representatives and Contractors of HY/2010/02 and HY/2012/07 in September 2015, part of the reclamation area for southern landfall under EP-353/2009/K and EP-354/2009/D was handed-over to Contract No. HY/2012/07.  Another part of the southern landfall area under EP-354/2009/D was handed-over to Contract No. HY/2012/07 after completion of reclamation works by Contract No. HY/2010/02 in June 2016.

The construction phase of the Contract commenced on 31 October 2013.  The impact monitoring phase of the EM&A programme, including air quality, noise, water quality and marine ecological monitoring as well environmental site inspections, commenced on 31 October 2013.  

Termination proposal for construction EM&A programme was approved by EPD on 16 March 2020.  The construction phase EM&A programme of the Contract has been terminated since 16 March 2020.

The general layout plan of the Contract components is presented in Figures 1.1 & 1.2a to l.

1.2                               Scope of This Report

This is the Final EM&A Report under the Contract No. HY/2012/07 Tuen Mun – Chek Lap Kok Link – Southern Connection Viaduct Section.  This report presents a summary of the environmental monitoring and audit works from 31 October 2013 to 16 March 2020.

1.3                               Organization Structure

The organization structure of the Contract is shown in Appendix A.  The key personnel contact names and contact details are summarized in Table 1.1 below.

Table 1.1 Contact Information of Key Personnel

Party

Position

Name

Telephone

Fax

HyD (Highways Department)

Project Coordinator

Stanley Chan

2762 3406

3188 6614

 

Senior Engineer

Steven Shum

 

2762 4133

3188 6614

SOR

(AECOM Asia Company Limited)

 

Chief Resident Engineer

Daniel Ip

3553 3800

2492 2057

 

Resident Engineer

 

Chan Wah Fu

2293 6434

3691 2899

 

 

 

 

 

ENPO / IEC

(Ramboll Hong Kong Ltd.)

ENPO Leader

 

Y.H. Hui

3465 2850

3465 2899

IEC

 

Manson Yeung

9700 6767

3465 2899

Environmental Officer

 

Roy Leung

3520 0387

3520 0486

 

24-hour Complaint Hotline

 

 

9738 4332

 

ET (ERM-HK)

ET Leader

Dr. Jasmine Ng

2271 3311

2723 5660

1.4                               Summary of Construction Works

As informed by the Contractor, details of the major works undertaken during the course of this Contract are listed below:

Marine-based Works

                           ·              Survey towers erection;

                           ·              Filling platform at seawall;

                           ·              Installation and uninstallation of marine piling platform;

                           ·              Construction of rock fill platform;

                           ·              Marine piling;

                           ·              Construction and installation of pile caps;

                           ·              Marine ground investigation (GI) and laboratory testing;

                           ·              Additional marine GI and laboratory testing;

                           ·              Installation of pier head, pier head segment and deck segment;

                           ·              Launching gantry assembly and launching gantry operation;

                           ·              Pier construction;

                           ·              Construction of marine section of berth at Southern Landfall;

                           ·              Construction of underslung truss scheme (no additional seabed will be occupied other than those assumed in the approved EIA Report); and

                           ·              Reinstatement of seawall at seafront

Land-based Works

·           Tree survey, felling and transplanting;

·           Channel re-construction at Area 1;

·           Site formation of workshop at Area 1;

·           Site offices erection at Area 5;

·           Construct temporary road at CEDD track for piling;

·           Temporary access bridge;

·           Fence installation and relocation at Area 2, Viaducts A, B, C & D;

·           Satellite container offices erection along seawall;

·           Land piling at Viaducts B, C & D;

·           Launching gantry operation;

·           Construction and installation of pile caps;

·           Construction of pile cap superstructure of Viaduct B;

·           Installation of pier head, pier head segment and deck segments;

·           Land piling;

·           Pier construction;

·           Pre-drilling works;

·           Piling platform installation at Viaducts B, C, D & E;

·           Additional land GI, trial pits & lab testing;

·           Re-alignment of Cheung Tung Road;

·           Relocation of MTR fence;

·           Utility surveys;

·           Slope works;

·           Drainage works;

·           Construction of land section of berth at Southern Landfall;

·           Road works along North Lantau Highway;

·           Asphalt paving;

·           Construction of sign gantries, light poles and street furniture;

·           Parapet and barriers installation;

·           Abutment construction;

·           Landscaping works at NLH/CTR; and

·           Landscaping works at HKBCF

The locations of the construction activities are shown in Figure 1.3.  The Environmental Sensitive Receivers in the vicinity of the Project are shown in Figure 1.4

The environmental mitigation measures implementation schedule is presented in Appendix B.

 


Figure 1.3    Locations of Construction Activities during the course of the Contract


1.5                               Summary of EM&A Programme Requirements

The EM&A programme required environmental monitoring for air quality, noise, water quality and marine ecology as well as environmental site inspections for air quality, noise, water quality, waste management, marine ecology and landscape and visual impacts.  The EM&A requirements and related findings for each component are described in the following sections, which include:

                        ·              Monitoring parameters;

                        ·              Action and Limit levels for all environmental parameters;

                        ·              Event Action Plan;

                        ·              Tested environmental impact hypotheses;

                        ·              Environmental mitigation measures, as recommended in the approved EIA Report; and

                        ·              Environmental requirement in contract documents.

2                                    EM&A RESULTS

The EM&A programme required environmental monitoring for air quality, noise, water quality and marine ecology as well as environmental site inspections for air quality, noise, water quality, waste management, marine ecology and landscape and visual impacts.  The EM&A requirements and related findings for each component are summarized in the following sections.

2.1                               Air Quality

The baseline air quality monitoring undertaken by the Hong Kong – Zhuhai –Macao Bridge Hong Kong Projects (HZMB) during October 2011 included the two monitoring stations ASR9A and ASR9C for this Project.  Thus, the baseline monitoring results and Action/ Limit Level presented in HZMB Baseline Monitoring Report ([1]) are adopted for this Project.

2.1.1                      Monitoring Requirements and Equipment

In accordance with the Updated EM&A Manual, impact 1-hour TSP monitoring was conducted three (3) times in every six (6) days and impact 24-hour TSP monitoring was carried out once in every six (6) days when the highest dust impact was expected. 

The air quality monitoring locations for the Contract is listed in Table 2.1 and is shown in Figure 2.1a and 2.1b.

Details of the equipment deployed in air quality monitoring are provided in Table 2.2.

Table 2.1   Locations of Impact Air Quality Monitoring Stations and Monitoring Dates during the Impact Monitoring Period

Monitoring Station

Monitoring Period

Location

Description

Parameters & Frequency

ASR9A (1)

From 1 to 11 November 2013

Siu Ho Wan MTR Depot

On ground near security office

Ÿ   1-hour Total Suspended Particulates (1-hour TSP, µg/m3), 3 times per day every 6 days

Ÿ   24-hour Total Suspended Particulates (24-hour TSP, µg/m3), daily for 24-hour every 6 days

ASR8A

From 15 November 2013 to 31 October 2019

Area 4

On ground at the Area 4

ASR9C (1)

From 1 to 11 November 2013

Siu Ho Wan MTR Depot

On ground near staff canteen

ASR8 (2)

From 15 November 2013  to 2 December 2014

Pak Mong Village Watch Tower

Rooftop of the premise

ASR9

From 4 December 2014 to 31 October 2019

Entrance of MTRC Depot

On ground at the entrance

Note: 

(1)    Air Quality Monitoring Stations ASR9A and ASR9C proposed in accordance with the Updated EM&A were relocated to ASR8A and ASR8 respectively since 15 November 2013.

(2)    Air Quality Monitoring Station ASR8 was relocated to ASR9 since 4 December 2014.

Table 2.2   Air Quality Monitoring Equipment

Equipment

Brand and Model

High Volume Sampler
(1-hour TSP and 24-hour TSP)

Tisch Environmental Mass Flow Controlled Total Suspended Particulate (TSP) High Volume Sampler (Model No. TE-5170)

 

Wind Sensor

Global Water (Wind Speed Sensor: WE550; Wind Direction Sensor: WE570)

 

Wind Anemometer for calibration

Lutron (Model No. AM-4201)

2.1.2                      Action & Limit Levels

The Action and Limit Levels of the air quality monitoring are provided in Appendix C.

2.1.3                      Monitoring Schedule for the Impact Monitoring Period

During the period of impact monitoring, impact 1-hour TSP monitoring and impact 24-hour TSP monitoring were carried out in accordance with the Updated EM&A Manual except for the following occasions summarised in Table 2.3 below:

Table 2.3   Change on Monitoring Schedule throughout the Impact Monitoring Period

Date

Occasions

26/11/2014

Air Quality Monitoring at ASR8 was suspended due to rejection of access to the monitoring station.

2/12/2014

Air Quality Monitoring at ASR8 was suspended due to rejection of access to the monitoring station.

20/10/2016

Air Quality Monitoring on 20 October 2016 was postponed to 26 October 2016 due to adverse weather conditions.

22/8/2017

Air Quality Monitoring for 24-hour TSP at ASR8A and ASR9 was canceled due to adverse weather conditions.

25/2/2019

Air quality monitoring of 24-hour TSP monitoring at ASR9 was failed due to power shortage and a make-up 24-hour TSP monitoring at ASR9 was conducted on 26 February 2019. 

28/2/2019

Air quality monitoring of 24-hour TSP monitoring at ASR8A was failed due to power shortage.

22/7/2019

Air quality monitoring of 1-hour and 24-hour TSP at ASR9 was cancelled due to power shortage.

25/7/2019

Air quality monitoring of 1-hour and 24-hour TSP at ASR9 was cancelled due to power shortage.

31/7/2019

Air quality monitoring of 1-hour and 24-hour TSP at ASR9 was cancelled due to power shortage and air quality monitoring of 24-hour TSP at ASR8A was cancelled due to adverse weather.

2.1.4                      Results and Observations

The major dust sources during the impact monitoring period included construction activities under the Contract as well as nearby traffic emissions.

A total of 399 monitoring events for 1-hour TSP and 402 monitoring events for 24-hour TSP were undertaken at ASR9A/ASR8A; while a total of 391 monitoring events for 1-hour TSP and 392 monitoring events for 24-hour TSP were undertaken at ASR9C/ASR8/ASR9 during the impact monitoring period. 

Comparison of EM&A results with baseline monitoring and EIA predictions for 1-hour TSP and 24-hour TSP are summarized in Tables 2.3 and 2.4 and present graphically in Appendix D.  The detailed impact monitoring data and meteorological information were reported in the First to Seventieth Monthly EM&A Reports.

Table 2.3  Summary of Average Levels of TSP Level of Baseline Monitoring and the Impact Monitoring Period (in µg/m3)

Monitoring Station

Average Baseline Monitoring

Average Impact Monitoring

 

Oct 2013  - Oct 2014

Nov 2014 - Oct 2015

Nov 2015 - Oct 2016

Nov 2016 - Oct 2017

Nov 2017 - Oct 2018

Nov 2018 -Aug 2019

 

 

ASR9C/

ASR8/

ASR9

(1-hr TSP)

220

106

103

88

107

90

85

 

 

ASR9C/

ASR8/

ASR9

(24-hr TSP)

75

67

71

64

59

57

60

 

 

ASR9A/

ASR8A

(1-hr TSP)

222

99

87

83

76

80

70

 

 

ASR9A/

ASR8A

(24-hr TSP)

74

64

60

57

50

59

45

 

 

Note:

(1) Baseline monitoring results of ASR9A and ASR9C are applied to ASR8A and ASR8/ASR9 respectively.

(2) Notification of temporary suspension of air quality monitoring has been approved by EPD on 28 August 2019.  No air quality monitoring was scheduled since 28 August 2019.

Table 2.4  Comparison of Impacts on Air Quality (in μg/m³) between EIA Prediction, Baseline Monitoring and the Impact Monitoring Period (in µg/m3)

Monitoring Station

EIA Predicted Maximum

Maximum Baseline Monitoring

Maximum Impact Monitoring

Oct 2013  - Oct 2014

Nov 2014 - Oct 2015

Nov 2015 - Oct 2016

Nov 2016 - Oct 2017

Nov 2017 - Oct 2018

Nov 2018 -Aug 2019

 

 

ASR9C/

ASR8/

ASR9

(1-hr TSP)

205 (1) /240

462

361

241

205

263

680

752

 

 

ASR9C/

ASR8/

ASR9

(24-hr TSP)

83 (1) / 108

113

205

133

114

96

172

152

 

 

ASR9A/

ASR8A

(1-hr TSP)

293 / 205 (1)

464

306

298

259

200

346

300

 

 

ASR9A/

ASR8A

(24-hr TSP)

105 /83 (1)

128

210

104

112

102

151

104

 

 

Note:

(1) EIA prediction of maximum of ASR8 is presented for reference.

(2) Scenario 1 of EIA prediction is adopted, in which north and south reclamations of TMCLKL were included in the modelling.

(3) Baseline monitoring results of ASR9A and ASR9C are applied to ASR8A and ASR8/ASR9 respectively.

(4) Notification of temporary suspension of air quality monitoring has been approved by EPD on 28 August 2019.  No air quality monitoring was scheduled since 28 August 2019.

Maximum 1-hour TSP and 24-hour TSP levels in the impact monitoring period were comparable to the baseline range, in which most of the impact and baseline TSP levels were higher than the levels predicted in the EIA Report.  The average 1-hour TSP and 24-hour TSP levels measured in the impact monitoring period were lower than the corresponding TSP levels measured in the baseline monitoring at all stations and thus suggested that no noticeable deterioration of air quality was caused by the construction activities of this Contract during the impact monitoring period.

2 Limit Level exceedances of 1-hour TSP and 2 Action Level exceedances of 24-hour TSP were recorded for air quality monitoring during the impact monitoring period.  Summary of the exceedances is reported in Table 2.5Actions were taken in accordance with the Event Action Plan as presented in Appendix G.  The exceedances were considered not related to this Contract upon further investigation.  Detailed investigation reports on exceedances were presented in Second, Fifty-second and Sixty-eighth Monthly EM&A Reports.  

Table 2.5  Summary of Action Level and Limit Level Exceedance of 1-hour TSP and 24-hour TSP

Period

Station

Parameter

Number of Action Level Exceedance(s)

Number of Limit Level Exceedance(s)

December 2013

ASR8A

24-hour TSP

1

-

December 2013

ASR8

24-hour TSP

1

-

February 2018

ASR9

1-hour TSP

-

1

 

 

 

 

June 2019

ASR9

1-hour TSP

-

1

 

 

 

 

2.2                               Noise Monitoring

The baseline noise monitoring undertaken by the HZMB Projects during the period of 18 October to 1 November 2011 included the monitoring station NSR1 for this Project.  Thus, the baseline monitoring results and Action/ Limit Level presented in HZMB Baseline Monitoring Report ([2]) are adopted for this Project.

2.2.1                      Monitoring Requirements and Equipment

In accordance with the Updated EM&A Manual, impact noise monitoring was conducted once per week during the construction phase of the Contract.

The noise monitoring station for the Contract is listed in Table 2.6 and is shown in Figure 2.2a and 2.2b.

Noise monitoring was performed by sound level meter in compliance with the International Electrotechnical Commission Publications (IEC) 651:1979 (Type 1) and 804:1985 (Type 1) specifications at the designated monitoring station.  Details of the equipment deployed in noise monitoring are provided in Table 2.7.

Table 2.6  Location of Impact Noise Monitoring Station and Monitoring Dates during the Impact Monitoring Period

Monitoring Station

Monitoring Period

Location

Parameters & Frequency

NSR1 (1)

From 31 October 2013 to 3 December 2014

Pak Mong Village Watch Tower

Ÿ  30-mins measurement at each monitoring station between 0700 and 1900 on normal weekdays (Monday to Saturday). Leq, L10 and L90 would be recorded.

 

Ÿ  At least once a week

NSR1A

From 4 December 2014 to 28 August 2019

Entrance of Pak Mong Village

Note:

(1)    Noise Monitoring Station NSR1 at Pak Mong Village was relocated to NSR1A since 4 December 2014.  Same baseline and Action/Limit Level for noise monitoring from NSR1 was applied.

Table 2.7   Noise Monitoring Equipment

Equipment

Brand and Model

Integrated Sound Level Meter

Rion NL-31; Rion NL-52

 

Acoustic Calibrator

Rion NC-73

2.2.2                      Action and Limit Levels

The Action and Limit levels of the noise monitoring are provided in Appendix C

2.2.3                      Monitoring Schedule for the Impact Monitoring Period

During the period of impact monitoring, noise monitoring was carried out in accordance with the Updated EM&A Manual except for the following occasions summarised in Table 2.8 below

Table 2.8   Change on Monitoring Schedule throughout the Impact Monitoring Period

Date

Remarks

26/11/2014

Noise monitoring at NSR1 was cancelled due to rejection of access to the monitoring station.

26/10/2016

Noise Monitoring on 20 October 2016 was postponed to 26 October 2016 due to adverse weather conditions.

2.2.4                      Results and Observations

Major noise sources during the noise monitoring included construction activities, adjacent maintenance works, and nearby traffic noise and aircraft noise.

A total of 400 monitoring events were undertaken in the impact monitoring period.  No Action Level and Limit Level exceedance was recorded at the monitoring stations in the monitoring period, thus no action was required to be taken in accordance with the Event Action Plan (Appendix G).

Comparison of EM&A results with baseline monitoring and EIA predictions for noise level are summarized in Tables 2.9 and 2.10 and present graphically in Appendix EThe detailed impact monitoring results were reported in the First to Seventieth Monthly EM&A Reports.

Table 2.9   Summary of Average Levels of Noise Level of Baseline Monitoring and the Impact Monitoring Period (in dB(A))

Monitoring Station

Average Baseline Monitoring

Average Impact Monitoring

 

Oct 2013  - Oct 2014

Nov 2014 - Oct 2015

Nov 2015 - Oct 2016

Nov 2016 - Oct 2017

Nov 2017 - Oct 2018

Nov 2018 -Aug 2019

 

 

NSR1

56.8

58

59.5

59.6

62

64

63

 

 

Note:

(1) EIA maximum noise level was predicted in SPL. Baseline and impact monitoring were measured in Leq(30min).

 

Table 2.10   Comparison of Impacts on Noise (in dB (A)) between EIA Prediction and the Impact Monitoring Period (in dB(A))

Monitoring Station

EIA Predicted Maximum

Maximum Impact Monitoring

Oct

2013 - Oct 2014

Nov 2014 - Oct 2015

Nov 2015 - Oct 2016

Nov 2016 - Oct 2017

Nov 2017 - Oct 2018

Nov 2018 -Aug 2019

 

NSR1

74

60

62

63

67

70

66

 

Note:

(1) EIA maximum noise level was predicted in SPL. Baseline and impact monitoring were measured in Leq(30min).

(2) Notification of temporary suspension of noise monitoring has been approved by EPD on 28 August 2019.  No construction noise monitoring was scheduled since 28 August 2019.

In general, the average impact noise monitoring results recorded in the impact monitoring period were within the range of the predicted noise levels in the EIA Report and thus suggested that no unacceptable level of construction noise generated from the Contract during the impact monitoring period.

2.3                               Water Quality Monitoring

The baseline water quality monitoring undertaken by the HZMB Projects between 6 and 31 October 2011 included all monitoring stations except SR4a for the Project.  Thus, the baseline monitoring results except for station SR4a and Action/Limit Level presented in HZMB Baseline Monitoring Report ([3]) are adopted for this Project.  Baseline water quality monitoring was conducted at station SR4a from 29 August to 24 September 2013.

Results of water quality monitoring for the period between June and July 2017 were adopted from the published EM&A data of Contract No. HY/2010/02 Hong Kong-Zhuhai-Macao Bridge Hong Kong Boundary Crossing Facilities – Reclamation Works ([4])([5]). 

Results of water quality monitoring in July and August 2019 were adopted from the published EM&A data of Contract No. HY/2012/08 Tuen Mun-Chek Lap Kok Link – Northern Connection Sub-sea Tunnel Section ([6]). 

2.3.1                      Monitoring Requirements and Equipment

In accordance with the Updated EM&A Manual, impact water quality monitoring was undertaken three (3) days per week during mid-ebb and mid-flood tides in the construction period at seven water quality monitoring stations. 

The water quality monitoring stations for the Contract are provided in Table 2.11 and is shown in Figure 2.3.

Details of the equipment deployed in water quality monitoring are provided in Table 2.12.

According to the Updated EM&A Manual, a post-construction water quality monitoring was carried out upon completion of all marine-based construction activities.  Post-construction water quality monitoring was undertaken three (3) days per week for at least 4 weeks.  The proposal for post-construction water quality monitoring was approved by EPD on 19 November 2019.  Post-construction water quality monitoring commenced on 27 November 2019 and completed on 23 December 2019.

Operational phase water quality monitoring was undertaken by Contract No. HY/2012/08 Tuen Mun-Chek Lap Kok Link – Northern Connection Sub-sea Tunnel Section.

Table 2.11 Locations of Water Quality Monitoring Stations and the Corresponding Monitoring Requirements

Station ID

Type

Coordinates

Parameters, unit

Depth

Frequency

 

 

Easting

Northing

 

 

 

IS(Mf)9

Impact Station (Close to HKBCF construction site)

 

813273

818850

Ÿ Temperature(°C)

Ÿ pH(pH unit)

Ÿ Turbidity (NTU)

Ÿ Water depth (m)

Ÿ Salinity (ppt)

Ÿ Dissolved

Oxygen (DO) (mg/L and % of

saturation)

·    Suspended Solid   

(SS) (mg/L)

3 water depths: 1m

below sea surface,

mid-depth and 1m

above sea bed.  If the water depth is less than 3m, mid-depth sampling only.  If water depth less than 6m, mid-depth may be omitted.

Impact monitoring: 3 days per week, at mid-flood and mid-ebb tides during the construction period of the Contract.

IS(Mf)16

Impact Station (Close to HKBCF construction site)

 

814328

819497

IS8 (2)

Impact Station(Close to HKBCF construction site)

 

814251

818412

IS8(N)

Impact Station(Close to HKBCF construction site)

 

814413

818570

SR4 (3)

Sensitive receiver (Tai Ho Inlet)

814760

817867

 

 

 

 

SR4(N) (4)

Sensitive receiver (Tai Ho)

 

814705

817859

SR4(N2)

Sensitive receiver (Tai Ho)

815688

817996

 

 

 

 

SR4a

Sensitive receiver

 

815247

818067

CS(Mf)3 (5)

Control Station

809989

821117

 

 

 

 

CS(Mf)3(N)

 

Control Station

808814

822355

CS(Mf)5

Control Station

817990

821129

Notes:

(1) In addition to the parameters presented monitoring location/position, time, water depth, sampling depth, tidal stages, weather conditions and any special phenomena or works underway nearby were also recorded.

(2) Water Quality Monitoring Station IS8 was relocated to IS8(N) since 12 June 2019.

(3) Water Quality Monitoring Station SR4 was relocated to SR4(N) since 2 March 2018.

(4) Water Quality Monitoring Station SR4(N) was relocated to SR4(N2) since 12 June 2019.

(5) Water Quality Monitoring Station CS(Mf)3 was relocated to CS(Mf)3(N) since 2 May 2017.

(6) Results of water quality monitoring for the period between June and July 2017 were adopted from the published EM&A data of Contract No. HY/2010/02 Hong Kong-Zhuhai-Macao Bridge Hong Kong Boundary Crossing Facilities – Reclamation Works. Station SR4a is not covered by HY/2010/02.  Data from Station SR4(N) is considered representative of those from SR4a since they are located 50m from each other and coral colonies, which is the sensitive receiver concerned at SR4a, are also presented along the seawall nearby SR4(N).

(7) Results of water quality monitoring in July and August 2019 were adopted from the published EM&A data of Contract No. HY/2012/08 Tuen Mun-Chek Lap Kok Link – Northern Connection Sub-sea Tunnel Section.

Table 2.12 Water Quality Monitoring Equipment

Equipment

Brand and Model

DO, Temperature meter and Salinity

YSI Pro2030

 

 

Turbidimeter

HACH Model 2100Q

 

pH meter   

HANNA HI8314/ Thermo Scientific Orion 2 Star

 

Positioning Equipment

Koden913MK2 with KBG-3 DGPS antenna / Furuno GP-170

 

Water Depth Detector

Speedtech Instrument SM-5 / Lowrance Mark 5x / Garmin Striker 4

 

Water Sampler

Kemmerer 1520 (1520-C25) 2.2L with messenger / WildCo Vertical Alpha Bottles 1120-2.2L /1120-3.2L

Aquatic Research Instrument Vertical/Horizontal Point Water Sampler 2.2L / 3.0L

 

Multi-parameters

(Dissolved Oxygen, Salinity, Turbidity, Temperature, pH)

YSI ProDSS / YSI 6920 V2/ YSI 6920 V2 Sonde

 

 

Notes:

(1) Water quality monitoring equipment used for water quality monitoring for the period between June and July 2017 could be referred to the published Monthly EM&A Reports of Contract No. HY/2010/02 Hong Kong-Zhuhai-Macao Bridge Hong Kong Boundary Crossing Facilities – Reclamation Works. Available at http://www.hzmbenpo.com/

(2) Water quality monitoring equipment used for water quality monitoring for the period between July and August 2019 could be referred to the published Monthly EM&A Reports of Contract No. HY/2012/08 Tuen Mun-Chek Lap Kok Link – Northern Connection Sub-sea Tunnel Section. Available at http://www.hzmbenpo.com/

2.3.2                      Action & Limit Levels

The Action and Limit Levels of the water quality monitoring are provided in Appendix C.

2.3.3                      Monitoring Schedule for the Impact Monitoring Period

During the period of impact monitoring, impact water quality monitoring was carried out in accordance with the Updated EM&A Manual except for the following occasions summarised in Table 2.13 below

Table 2.5   Change on Monitoring Schedule throughout the Impact Monitoring Period

Date

Remarks

19/2/2015

Water quality monitoring was cancelled due to suspension of marine works. 

21/2/2015

Water quality monitoring was cancelled due to suspension of marine works. 

7/7/2015

Water quality monitoring was cancelled due to adverse weather.

3/10/2015

Water quality monitoring was cancelled due to adverse weather.

9/2/2016

Water quality monitoring was cancelled due to suspension of marine works during holiday. 

2/8/2016

Water quality monitoring was canceled due to adverse weather conditions

18/10/2016

Water quality monitoring was canceled due to adverse weather conditions

28/1/2017

Water quality monitoring was cancelled due to suspension of marine works during holiday. 

31/1/2017

Water quality monitoring was cancelled due to suspension of marine works during holiday.

4/4/2017

Water quality monitoring was cancelled due to suspension of marine works during holiday.

23/8/2017

Water quality monitoring was canceled due to adverse weather conditions.

4/9/2017

Water quality monitoring was canceled due to adverse weather conditions.

8/1/2018

Water quality monitoring at IS(Mf)9 and CS(Mf)3(N) during mid-flood tide and all monitoring stations during mid-ebb tide was cancelled due to adverse weather.

5/3/2018

Water quality monitoring during mid-flood tide at all water quality monitoring stations, except CS(Mf)5, was cancelled due to adverse weather.

6/6/2018

Water quality monitoring during mid-flood tide at all water quality monitoring stations, except CS(Mf)5, was cancelled due to adverse weather.

8/6/2018

Water quality monitoring was canceled due to adverse weather conditions.

18/7/2018

Water quality monitoring was canceled due to adverse weather conditions.

12/9/2018

Water quality monitoring during mid-ebb tide was canceled due to adverse weather conditions.

17/9/2018

Water quality monitoring was canceled due to adverse weather conditions.

17/2/2018

Water quality monitoring was cancelled due to suspension of marine works during holiday.

19/2/2018

Water quality monitoring was cancelled due to suspension of marine works during holiday.

1/10/2018

Water quality monitoring was cancelled due to suspension of marine works during holiday.

17/10/2018

Water quality monitoring was cancelled due to suspension of marine works during holiday.

26/12/2018

Water quality monitoring was cancelled due to suspension of marine works during site closure.

4/2/2019

Water quality monitoring was cancelled due to suspension of marine works during site closure.

6/2/2019

Water quality monitoring was cancelled due to suspension of marine works during site closure.

8/2/2019

Water quality monitoring was cancelled due to suspension of marine works during site closure.

5/4/2019

Water quality monitoring was cancelled due to suspension of marine works during site closure.

1/5/2019

Water quality monitoring was cancelled due to suspension of marine works during site closure.

7/6/2019

Water quality monitoring was cancelled due to suspension of marine works during holiday.

2.3.4                      Results and Observations

A total of 883 monitoring events for impact water quality monitoring events and 12 monitoring events for post-construction water quality monitoring were undertaken during the impact monitoring period. 

Comparison of EM&A results with baseline monitoring are summarized in Tables 2.14 to 2.18.  The detailed impact water quality monitoring data was reported in the First to Seventieth Monthly EM&A Reports and detailed statistical analysis was represented in the First to Sixth Annual EM&A Reports.

 

Table 2.6   Summary of Averages Level of Surface DO Level of Baseline Monitoring and Impact Monitoring Period (in mg/L)

Monitoring Station

Tide

Average Baseline Monitoring

Average Impact Monitoring

Post Construction Monitoring[JT4] 

 

Oct 2013  - Oct 2014

Nov 2014 - Oct 2015

Nov 2015 - Oct 2016

Nov 2016 - Oct 2017

Nov 2017 - Oct 2018

Nov 2018 -Aug 2019

 

 

IS(Mf)16

Mid-ebb

6.3

6.4

6.8

6.7

6.7

7.0

6.9

7.0

 

Mid-flood

6.3

6.4

6.9

6.8

6.8

7.1

7.0

7.0

 

IS(Mf)9

Mid-ebb

6.6

6.4

6.8

6.7

6.9

7.4

7.2

7.0

 

Mid-flood

6.5

6.5

6.9

6.7

7.0

7.0

7.0

7.0

 

IS8/IS8(N)

Mid-ebb

6.4

6.4

6.8

6.6

6.8

7.3

7.1

7.0

 

Mid-flood

6.4

6.4

6.9

6.7

6.8

7.1

7.0

7.0

 

SR4/

SR4(N)/

SR4(N2)

Mid-ebb

6.1

6.3

6.8

6.6

6.6

7.0

6.8

6.9

 

Mid-flood

6.3

6.4

6.9

6.7

6.8

7.0

7.0

7.0

 

SR4a

Mid-ebb

5.5

6.4

6.8

6.6

6.8

6.9

6.9

7.0

 

Mid-flood

5.5

6.4

6.9

6.7

6.8

7.0

7.0

7.0

 

Note:

(1) Notification of temporary suspension of water quality monitoring has been approved by EPD on 30 August 2019.  No impact water quality monitoring was scheduled since 30 August 2019.

(2) The post-construction water quality monitoring commenced on 27 November 2019 and completed on 23 December 2019.

Table 2.7   Summary of Averages Level of Middle DO Level of Baseline Monitoring and Impact Monitoring Period (in mg/L)

Monitoring Station

Tide

Average Baseline Monitoring (3)

Average Impact Monitoring (3)

Post Construction Monitoring (3)[JT5] 

 

Oct 2013  - Oct 2014

Nov 2014 - Oct 2015

Nov 2015 - Oct 2016

Nov 2016 - Oct 2017

Nov 2017 - Oct 2018

Nov 2018 -Aug 2019

 

 

IS(Mf)16

Mid-ebb

6.3

6.2

6.7

6.6

6.6

6.9

6.7

-

 

Mid-flood

6.1

6.3

6.8

6.6

6.8

6.5

-

-

 

IS(Mf)9

Mid-ebb

-

-

-

-

-

7.2

7.1

7.0

 

Mid-flood

6.2

-

-

-

7.3

7.6

7.2

7.0

 

IS8/IS8(N)

Mid-ebb

-

-

-

-

-

7.4

-

-

 

Mid-flood

-

-

-

-

-

-

7.9

-

 

SR4/

SR4(N)/

SR4(N2)

Mid-ebb

-

-

-

-

-

5.1

-

-

 

Mid-flood

-

-

-

-

-

 

-

-

 

Note:

(1) Notification of temporary suspension of water quality monitoring has been approved by EPD on 30 August 2019.  No impact water quality monitoring was scheduled since 30 August 2019.

(2) The post-construction water quality monitoring commenced on 27 November 2019 and completed on 23 December 2019.

(3) In-situ monitoring was taken according to the requirement specified in the EM&A Manual, i.e. 3 water depth namely 1m below sea surface, mid-depth and 1m above sea bed. If the water depth was less than 3m, mid-depth sampling only. If water depth less than 6m, mid-depth may be omitted.

Table 8      Summary of Averages Level of Bottom DO Level of Baseline Monitoring and Impact Monitoring Period (in mg/L)

Monitoring Station

Tide

Average Baseline Monitoring

Average Impact Monitoring

Post Construction Monitoring[JT6] 

 

Oct 2013  - Oct 2014

Nov 2014 - Oct 2015

Nov 2015 - Oct 2016

Nov 2016 - Oct 2017

Nov 2017 - Oct 2018

Nov 2018 -Aug 2019

 

 

IS(Mf)16

Mid-ebb

5.9

6.1

6.5

6.4

6.5

6.6

6.7

7.0

 

Mid-flood

6.0

6.1

6.6

6.5

6.6

5.9

5.6

6.9

 

IS(Mf)9

Mid-ebb

6.6

6.2

6.7

6.5

6.8

7.2

7.0

7.0

 

Mid-flood

6.7

6.3

6.7

6.6

6.9

5.9

6.1

7.0

 

IS8/IS8(N)

Mid-ebb

6.2

6.1

6.7

6.5

6.7

6.9

6.8

7.0

 

Mid-flood

6.3

6.2

6.8

6.6

6.8

6.1

6.0

7.0

 

SR4/

SR4(N)/

SR4(N2)

Mid-ebb

6.0

6.2

6.7

6.5

6.6

6.8

6.6

6.9

 

Mid-flood

6.2

6.3

6.7

6.5

6.7

6.2

5.7

7.0

 

SR4a

Mid-ebb

5.3

6.2

6.7

6.5

6.6

6..5

6.6

7.0

 

Mid-flood

5.2

6.2

6.8

6.6

6.8

5.7

5.6

6.9

 

Note:

(1) Notification of temporary suspension of water quality monitoring has been approved by EPD on 30 August 2019.  No impact water quality monitoring was scheduled since 30 August 2019.

(2) The post-construction water quality monitoring commenced on 27 November 2019 and completed on 23 December 2019.

Table 2.17       Summary of Averages Level of Depth-Averaged Turbidity Level of Baseline Monitoring and Impact Monitoring Period

Monitoring Station

Tide

Average Baseline Monitoring

Average Impact Monitoring

Post Construction Monitoring

 

Oct 2013  - Oct 2014

Nov 2014 - Oct 2015

Nov 2015 - Oct 2016

Nov 2016 - Oct 2017

Nov 2017 - Oct 2018

Nov 2018 -Aug 2019

 

 

IS(Mf)16

Mid-ebb

8.9

5.8

10.5

9.4

7.3

6.1

6.4

9.3

 

Mid-flood

11.3

5.8

10.1

9.1

7.5

6.9

7.0

9.0

 

IS(Mf)9

Mid-ebb

8.2

5.9

10.4

9.2

7.3

6.8

6.1

7.2

 

Mid-flood

10.2

5.8

10.1

8.9

7.8

8.3

6.9

10.0

 

IS8/IS8(N)

Mid-ebb

8.4

5.9

10.4

9.1

8.1

8.1

7.2

7.3

 

Mid-flood

11.9

5.9

10.1

8.9

9.1

9.0

6.5

7.4

 

SR4/

SR4(N)/

SR4(N2)

Mid-ebb

8.9

5.9

10.4

9.1

8.0

7.6

6.6

6.6

 

Mid-flood

10.3

5.9

10.2

8.8

8.2

8.7

6.1

6.7

 

SR4a

Mid-ebb

8.9

5.8

10.3

9.1

8.3

8.1

5.8

5.6

 

Mid-flood

7.8

5.8

10.0

8.9

8.5

8.6

5.9

6.9

 

Note:

(1) Notification of temporary suspension of water quality monitoring has been approved by EPD on 30 August 2019.  No impact water quality monitoring was scheduled since 30 August 2019.

(2) The post-construction water quality monitoring commenced on 27 November 2019 and completed on 23 December 2019.

Table 2.18 Summary of Averages Level of Depth-Averaged SS Level of Baseline Monitoring and Impact Monitoring Period

Monitoring Station

Tide

Average Baseline Monitoring

Average Impact Monitoring

Post Construction Monitoring

 

Oct 2013  - Oct 2014

Nov 2014 - Oct 2015

Nov 2015 - Oct 2016

Nov 2016 - Oct 2017

Nov 2017 - Oct 2018

Nov 2018 -Aug 2019

 

 

IS(Mf)16

Mid-ebb

11.3

6.3

14.3

13.0

9.2

6.9

6.9

9.6

 

Mid-flood

10.4

6.1

13.8

12.6

9.0

7.6

6.8

10.9

 

IS(Mf)9

Mid-ebb

10.9

6.3

14.1

12.8

9.1

7.0

6.5

10.0

 

Mid-flood

14.7

6.2

13.7

12.4

9.5

8.8

6.9

11.2

 

IS8/IS8(N)

Mid-ebb

11.3

6.1

14.2

12.7

9.2

7.9

7.5

9.7

 

Mid-flood

13.5

6.2

13.9

12.3

10.2

9.8

6.9

9.9

 

SR4/

SR4(N)/

SR4(N2)

Mid-ebb

11.1

6.3

14.2

12.6

9.5

7.9

6.9

9.7

 

Mid-flood

12.2

6.2

13.9

12.3

10.3

9.7

6.8

10.0

 

SR4a

Mid-ebb

9.1

6.2

14.1

12.7

10.2

7.9

6.3

8.5

 

Mid-flood

9.8

6.1

13.7

12.3

10.7

9.9

6.2

9.7

 

Note:

(1) Notification of temporary suspension of water quality monitoring has been approved by EPD on 30 August 2019.  No impact water quality monitoring was scheduled since 30 August 2019.

(2) The post-construction water quality monitoring commenced on 27 November 2019 and completed on 23 December 2019.

                        18 Action Level and 1 Limit Level exceedances of SS, 1 Action Level and 1 Limit Level exceedances of Turbidity and 253 Action Level and 25 Limit Level exceedances of DO were recorded for water quality monitoring during the impact monitoring period.  Summary of the exceedances is reported in Table 2.19.  Actions were taken in accordance with the Event Action Plan as presented in Appendix G.  The exceedances were considered not related to this Contract upon further investigation.  Detailed investigation reports on exceedances were presented in First, Nineteenth, Forty-sixth to Fifty-third, Fifty-fifth to Fifty-ninth, Sixty-seventh, Sixty-ninth and Seventieth Monthly EM&A Reports.

Table 2.9  Summary of Action Level and Limit Level Exceedance of Water Quality Monitoring

 

Period

Station

Parameter

Number of Action Level Exceedance(s)

Number of Limit Level Exceedance(s)

November 2013

SR4a

SS

1

-

May 2015

SR4a

SS

1

-

 

 

 

 

August 2017

CS(Mf)3(N)

DO(S&M)

1

1

CS(Mf)3(N)

DO(B)

5

4

CS(Mf)5

DO(S&M)

7

2

CS(Mf)5

DO(B)

7

7

IS(Mf)16

DO(S&M)

2

-

IS(Mf)16

DO(B)

4

-

IS(Mf)9

DO(B)

1

-

SR4a

DO(B)

3

-

IS8

SS

1

-

September 2017

CS(Mf)3(N)

DO(S&M)

11

-

CS(Mf)3(N)

DO(B)

5

-

CS(Mf)5

DO(S&M)

12

-

CS(Mf)5

DO(B)

17

-

IS(Mf)16

DO(S&M)

3

-

IS(Mf)16

DO(B)

7

-

IS(Mf)9

DO(S&M)

3

-

IS(Mf)9

DO(B)

2

-

IS8

DO(S&M)

3

-

IS8

DO(B)

2

-

SR4

DO(S&M)

5

-

SR4

DO(B)

2

-

SR4a

DO(S&M)

7

-

SR4a

DO(B)

7

-

IS8

SS

1

-

IS8

Turbidity

-

1

SR4

SS

1

-

SR4a

SS

1

-

October 2017

CS(Mf)5

DO(S&M)

1

-

CS(Mf)5

DO(B)

4

-

IS(Mf)9

SS

1

-

November 2017

IS(Mf)9

SS

2

-

SR4

SS

1

-

SR4a

SS

1

-

December 2017

IS8

SS

2

-

January 2018

SR4a

SS

1

-

February 2018

SR4a

SS

1

-

March 2018

IS8

SS

1

-

May 2018

IS8

DO(B)

1

-

June 2018

SR4a

DO(B)

2

-

SR4a

Turbidity

1

-

July 2018

IS(Mf)16

DO(B)

1

-

IS8

DO(B)

1

-

SR4a

DO(B)

2

1

SR4a

SS

-

1

August 2018

IS(Mf)16

DO(S&M)

3

-

IS(Mf)16

DO(B)

4

-

IS(Mf)9

DO(S&M)

1

-

IS(Mf)9

DO(B)

2

-

IS8

DO(S&M)

-

1

IS8

DO(B)

3

-

SR4(N)

DO(S&M)

5

-

SR4(N)

DO(B)

5

-

SR4a

DO(S&M)

3

-

SR4a

DO(B)

5

1

September 2018

IS(Mf)16

DO(S&M)

5

1

IS(Mf)16

DO(B)

7

-

IS(Mf)9

DO(S&M)

5

-

IS(Mf)9

DO(B)

3

-

IS8

DO(S&M)

5

-

IS8

DO(B)

3

1

SR4(N)

DO(S&M)

7

-

SR4(N)

DO(B)

5

1

SR4a

DO(S&M)

1

2

SR4a

DO(B)

7

-

May 2019

IS8

SS

1

-

SR4(N)

SS

1

-

July 2019

IS(Mf)16

DO(S&M)

1

-

IS(Mf)16

DO(B)

4

1

IS(Mf)9

DO(B)

1

-

IS8(N)

DO(B)

2

1

SR4(N2)

DO(S&M)

1

-

SR4(N2)

DO(B)

7

-

SR4a

DO(S&M)

1

-

SR4a

DO(B)

6

-

August 2019

IS(Mf)16

DO(S&M)

2

-

IS(Mf)16

DO(B)

2

-

IS(Mf)9

DO(S&M)

1

-

IS8(N)

DO(S&M)

2

-

IS8(N)

DO(B)

2

-

SR4(N2)

DO(S&M)

4

-

SR4(N2)

DO(B)

1

1

SR4a

DO(S&M)

3

-

SR4a

DO(B)

6

-

 

 

 

 

 

In general, DO, turbidity and suspended solids levels were varied across the impact monitoring period and these variations were however not consistent throughout the impact monitoring period. 

According to the EIA prediction, no SS exceedance was anticipated from this Project at the water sensitive receivers nearby the vicinity of Contract (WSR 22a, WSR 22b and WSR 22c).  Although exceedances on depth-averaged SS were recorded in the impact monitoring period, the exceedances were considered not related to this Contract upon further investigation.  The impact monitoring results were considered influenced by fluctuation of background regional water quality instead of indicating any unacceptable impacts from this Contract.

During the post-construction water quality monitoring, no non-compliance of the water quality limit for DO, turbidity and suspended solids levels was recorded.

2.4                           Dolphin Monitoring

2.4.1                      Monitoring Requirements

Impact dolphin monitoring is required to be conducted by a qualified dolphin specialist team to evaluate whether there have been any effects on the Indo-Pacific humpback dolphin Sousa chinensis (i.e. Chinese White Dolphin) from the Contract.  In order to fulfil the EM&A requirements and make good use of available resources, the impact line transect dolphin monitoring data was collected by HyD’s Contract No. HY/2011/03 Hong Kong-Zhuhai-Macao Bridge. Hong Kong Link Road - Section between Scenic Hill and Hong Kong Boundary Crossing Facilities between November 2013 and September 2019 and Contract No. HY/2012/08 TMCLKL Northern Connection Sub-Sea Tunnel Section between October 2019 and February 2020.

Operational phase dolphin monitoring was undertaken by Contract No. HY/2012/08 Tuen Mun-Chek Lap Kok Link – Northern Connection Sub-sea Tunnel Section. 

2.4.2                      Monitoring Equipment

Table 2.20 summarizes the equipment used for the impact dolphin monitoring.

Table 2.20 Dolphin Monitoring Equipment

Equipment

Model

Global Positioning System (GPS)

 

 

Camera

 

 

Laser Binoculars

 

Marine Binocular

 

 

Vessel for Monitoring

 

Garmin 18X-PC

Geo One Phottix

 

Nikon D90 300m 2.8D fixed focus

Nikon D90 20-300m zoom lens

 

Infinitor LRF 1000

 

Bushell 7 x 50 marine binocular with compass and reticules

 

65 foot single engine motor vessel with viewing platform 4.5m above water level

2.4.3                      Monitoring Parameter, Frequencies & Duration

The dolphin monitoring covered all transect lines in Northeast Lantau (NEL) and the Northwest Lantau (NWL) survey areas twice per month throughout the entire construction period.  The monitoring data were compatible with, and should be made available for, long-term studies of small cetacean ecology in Hong Kong.  In order to provide a suitable long-term dataset for comparison, identical methodology and line transects employed in baseline dolphin monitoring was followed in the impact dolphin monitoring.

2.4.4                      Monitoring Location

The impact dolphin monitoring was carried out in the NEL and NWL along the line transect as depicted in Figure 2.4.  The co-ordinates of all transect lines are shown in Table 2.21 below.

Table 2.21 Impact Dolphin Monitoring Line Transect Co-ordinates

Line No.

Easting

Northing

Line No.

Easting

Northing

1

Start Point

804671

815456 (1)

13

Start Point

816506

819480

1

End Point

804671

831404

13

End Point

816506

824859

2

Start Point

805476 (1)

820800 (1)

14

Start Point

817537

820220

2

End Point

805476 (1)

826654

14

End Point

817537

824613

3

Start Point

806464

821150 (1)

15

Start Point

818568

820735

3

End Point

806464

822911

15

End Point

818568

824433

4

Start Point

807518

821500 (1)

16

Start Point

819532

821420

4

End Point

807518

829230

16

End Point

819532

824209

5

Start Point

808504

821850 (1)

17

Start Point

820451

822125

5

End Point

808504

828602

17

End Point

820451

823671

6

Start Point

809490

822150 (1)

18

Start Point

821504

822371

6

End Point

809490

825352

18

End Point

821504

823761

7

Start Point

810499

822000 (1)

19

Start Point

822513

823268

7

End Point

810499

824613

19

End Point

822513

824321

8

Start Point

811508

821123 (1)

20

Start Point

823477

823402

8

End Point

811508

824254

20

End Point

823477

824613

9

Start Point

812516

821303 (1)

21

Start Point

805476

827081

9

End Point

812516

824254

21

End Point

805476

830562

10

Start Point

813525

821176 (1)

22

Start Point

806464

824033

10

End Point

813525

824657

22

End Point

806464

829598

11

Start Point

814556

818853 (1)

23

Start Point

814559

821739

11

End Point

814556

820992

23

End Point

814559

824768

12

Start Point

815542

818807

24

Start Point

805476 (1)

815900 (1)

12

End Point

815542

824882

24

End Point

805476 (1)

819100 (1)

Note: (1) Proposal on the changes of transect lines for dolphin monitoring was approved by EPD on

          28 July 2017 (Reference number: (19) in EP2/G/A/129 Pt. 8).

2.4.5                      Action & Limit Levels

The Action and Limit levels of dolphin impact monitoring are shown in Appendix C.  The Event Action Plan is presented in Appendix H.

2.4.6                      Monitoring Schedule for the Impact Monitoring Period

The dolphin monitoring schedules for the impact monitoring period are provided in the First to Seventy-Sixth Monthly EM&A Reports.

2.4.7                      Results & Observations

A total of 152 monitoring events for dolphin monitoring events were undertaken during the impact monitoring period.

Summary of the average encounter rates of Chinese White Dolphins in NEL and NWL survey areas and comparison of average dolphin group size are shown in Tables 2.22 and 2.23.

Table 2.22        Average Dolphin Encounter Rates

 

Encounter rate (STG)

(no. of on-effort dolphin sightings per 100 km of survey effort)

Encounter rate (ANI)            (no. of dolphins from all on-effort sightings per 100 km of survey effort)

Northeast Lantau

Northwest Lantau

Northeast Lantau

Northwest Lantau

Impact Phase (2018-19)

0.00

1.42 ± 1.80

0.00

3.62 ± 4.93

Impact Phase (2017-18)

0.00

2.68 ± 3.04

0.00

9.02 ± 14.63

Impact Phase (2016-17)

0.00

2.35 ± 2.62

0.00

8.57 ± 11.05

Impact Phase (2015-16)

0.00

2.10 ± 1.83

0.00

8.54 ± 8.53

Impact Phase (2014-15)

0.11 ± 0.54

2.54 ± 2.49

0.11 ± 0.54

11.64 ± 14.04

Impact Phase (2013-14)

0.22 ± 0.74

6.93 ± 4.08

0.76 ± 2.59

26.31 ± 17.56

Transitional Phase (2012-13)

1.70 ± 2.26

7.68 ± 4.36

4.75 ± 7.61

27.51 ± 18.06

Baseline Phase (2011-12)

6.05 ± 5.04

7.75 ± 5.69

19.91 ± 21.30

29.57 ± 26.96

Comparison of average daily dolphin encounter rates from six years of impact monitoring phases (November 2013 – October 2019), transitional phase (November 2012 – October 2013) and baseline phase monitoring periods (February 2011 – January 2012). (± denotes the standard deviation of the value)

Table 2.23        Comparison of Average Dolphin Group Size

 

Average Dolphin Group Size

Overall

Northeast Lantau

Northwest Lantau

Impact Phase (2018-19)

2.52 ± 1.45

(n = 27)

0.00

2.52 ± 1.45

(n = 27)

Impact Phase (2017-18)

3.12 ± 2.86

(n = 42)

0.00

3.12 ± 2.86

(n = 42)

Impact Phase (2016-17)

3.51 ± 2.68

(n = 43)

0.00

3.51 ± 2.68

(n = 43)

Impact Phase (2015-16)

3.73 ± 3.14

(n = 45)

1.00 (n = 1)

3.80 ± 3.14

(n = 44)

Impact Phase (2014-15)

4.24 ± 3.15

(n = 54)

1.00 (n = 1)

4.30 ± 3.15

(n = 53)

Impact Phase (2013-14)

3.76 ± 2.57

(n = 136)

5.00 ± 2.71

(n = 4)

3.73 ± 2.57

(n = 132)

Transitional Phase (2012-13)

3.37 ± 2.98

(n = 186)

2.64 ± 2.38

(n = 22)

3.47 ± 3.05

(n = 164)

Baseline Phase (2011-12)

3.32 ± 2.86

(n = 288)

2.80 ± 2.35

(n = 79)

3.52 ± 3.01

(n = 209)

Comparison of average dolphin group size from six years of impact monitoring phases (November 2013 – October 2019), transitional phase (November 2012 – October 2013) and baseline phase monitoring periods (February 2011 – January 2012). (± denotes the standard deviation of the value)

11 Action Level and 19 Limit Level exceedances were recorded for dolphin monitoring during the impact monitoring period.  Detailed investigation reports on exceedances were presented in First to Twenty-fifth Quarterly EM&A Reports.

According to the baseline results of the approved EIA Report, the dolphin groups were largely sighted near waters around Lung Kwu Chau and Sha Chau.  There was no dolphin sighted along the alignment of this Contract.   Dolphins are observed heavily utilized area around Lung Kwu Chau and less frequently in the North Lantau region where the works area of this Contract is situated.  The monitoring results in the impact monitoring period are considered to be in line with the EIA predictions, and the review of monitoring data suggested that no unacceptable impacts was noted from the marine works under this Contract.

2.4.8                      Marine Mammal Exclusion Zone Monitoring

Daily marine mammal exclusion zone monitoring was undertaken between November 2013 and June 2019 during the period of marine works under this Contract.  No marine works were undertaken since July 2019, therefore, daily 250 m marine mammal exclusion zone monitoring was not undertaken since July 2019.  

Passive Acoustic Monitoring (PAM) was undertaken between September 2014 and September 2015 as marine piling works was carried out outside the daylight hours. 

During the exclusion zone monitoring, one sighting of the Indo-Pacific humpback dolphin Sousa chinensis within the 250 m marine mammal exclusion zone of the landing platform workfront nearby Viaduct D was recorded on 23 January 2014 by the marine mammal observer during the daylight hours, and the marine construction work was subsequently suspended.  The Dolphin Intrusion Report is presented in the Appendix K of the Third Monthly EM&A Report.

2.5                           Bored Piling Monitoring

Baseline bored piling monitoring, including land-based theodolite tracking, underwater noise monitoring and acoustic behavioural monitoring, were undertaken from September to October 2013 by qualified dolphin specialist.  Detailed baseline monitoring results and Action/ Limit Level are presented in the Baseline Monitoring Report ([7]) under this Contract.

Impact monitoring of bored piling monitoring was conducted from 3 March to 25 April 2014.  Schedule of bored piling monitoring are detailed in the Fifth and Sixth Monthly EM&A Reports.  Due to rare occurrence of dolphin in the study area, no impact associated from bored piling works could be identified.  Action and Limit Level Exceedances were however recorded in the Underwater Noise and Acoustic Behavioural Monitoring.  Actions were taken according to the Event Action Plan (Appendix G).  The detailed results of impact bored piling monitoring are presented in the Impact Monitoring Report for Underwater Noise and Dolphin Acoustic Behavioural Monitoring and Impact Monitoring Report for Land-based Dolphin Behavioural and Movement Monitoring submitted under separate covers.

2.6                           Post-Translocation Coral Monitoring

4 events of Post-Translocation Coral Monitoring were conducted on 17 January, 16 April, 24 July and 23 October 2014 and no exceedance of Action nor Limit Levels was recorded.  The results were detailed in the First to Fourth Quarterly Post-Translocation Coral Monitoring Reports.  The findings indicated that no Action or Limit Levels exceedances was recorded for coral monitoring as increase in percentage of partial mortality was not detected for both the tagged translocated and natural coral colonies when comparing to the pre-translocation dataset.

The result is in a line with the EIA prediction as the impact on coral was predicted minor.

2.7                           EM&A Site Inspection

Site inspections were carried out on weekly basis to monitor the implementation of proper environmental pollution control and mitigation measures under the Contract.  A total of 330 site inspections were carried out in the impact monitoring period.  Key observations were summarized in the section of EM&A Site Inspection in the First to Seventy-seventh Monthly EM&A Reports.  The Contractor has rectified all of the observations identified during environmental site inspections in the impact monitoring period.

2.8                           Waste Management Status

Wastes generated during the impact monitoring period include construction wastes (inert and non-inert), imported fill, recyclable materials, chemical waste and marine sediments.  The summary of waste generation amount is presented in Appendix H.

Waste monitoring and audit programme has been undertaken during the impact monitoring period.  Wastes arising from this Contract have been managed in accordance with the recommendations in the EIA Report, the EM&A Manual, the Waste Management Plan and other relevant statutory requirements.

2.9                           Environmental Licenses and Permits

A summary of the environmental licenses and permits for this Contract is presented in Table 2.24 below.


Table 2.24 Summary of Environmental Licenses and Permits

License/ Permit

License or Permit No.

Date of Issue

Date of Expiry

License/ Permit Holder

Remarks

Environmental Permit

EP-354/2009/A

08-Dec-10

NA

HyD

Tuen Mun- Chek Lap Kok Link

Environmental Permit

EP-354/2009/B

28-Jan-14

NA

HyD

Tuen Mun- Chek Lap Kok Link

Environmental Permit

EP-354/2009/C

10-Dec-14

N/A

HyD

Tuen Mun- Chek Lap Kok Link (superseded by EP-354/2009/D in March 2015)

Environmental Permit

EP-354/2009/D

13-Mar-15

N/A

HyD

Tuen Mun- Chek Lap Kok Link

Environmental Permit

EP-353/2009/I

17-Jul-15

N/A

HyD

Hong Kong Boundary Crossing Facilities (effective from Septermber 2015)

Environmental Permit

EP-353/2009/K

11-Apr-16

N/A

HyD

Hong Kong Boundary Crossing Facilities

 

 

 

 

 

 

Chemical Waste Registration

5213-951-G2380-17

12-Jun-14

N/A

GCL

Viaducts A, B, C, D & E

Chemical Waste Registration

5213-961-G2380-13

10-Oct-13

N/A

GCL

Chemical waste produced in Contract HY/2012/07 (Area 1 adjacent to Cheng Tung Road, Siu Ho Wan)

Chemical Waste Registration

5213-961-G2380-14

10-Oct-13

N/A

GCL

Chemical waste produced in Contract HY/2012/07 (Area 2 adjacent to Cheung Tung Road, Pak Mong Village)

Chemical Waste Registration

5213-974-G2588-03

04-Nov-13

N/A

GCL

Chemical waste produced in Contract HY/2012/07  (WA5 adjacent to Cheung Tung Road, Yam O)

Construction Dust Notification

361571

05-Jul-13

N/A

GCL

-

Construction Dust Notification

362093

17-Jul-13

N/A

GCL

For Area 23

Construction Waste Disposal Account

7017735

10-Jul-13

N/A

GCL

-

Construction Waste Disposal Account

7019470

03-Mar-14

Vessel CHIT Account

GCL

Vessel CHIT Account

Waste Water Discharge License

WT00019017-2014

13-May-14

31-May-19

GCL

Discharge for marine portion

Waste Water Discharge License

WT00019018-2014

13-May-14

31-May-19

GCL

Discharge for land portion

Dumping Permit/ Loading Permit (Type 1 – Open Sea Disposal)

(4) in EP/MD/14-075

25-Sep-13

N/A

GCL

-

Marine Dumping Permit

EP/MD/14-075

28-Jan-14

27-Jul-14

GCL

For dumping Type I Sediment

Marine Dumping Permit

EP/MD/15-203

28-Jan-15

27-Jul-15

GCL

For dumping Type I sediment

Marine Dumping Permit

EP/MD/15-257

02-Apr-15

07-Oct-15

GCL

For dumping Type I sediment

Marine Dumping Permit

EP/MD/16-102

13-Oct-15

16-Apr-16

GCL

For dumping Type I sediment

Marine Dumping Permit

Marine Dumping Permit

Marine Dumping Permit

EP/MD/16-138

EP/MD/17-037

EP/MD/17-115

10-Dec-15

14-Jun-16

20-Oct-16

13-Jun-16

13-Dec-16

31-Dec-16

GCL

GCL

GCL

For dumping Type I sediment

For dumping Type I sediment

For dumping Type I sediment

Marine Dumping Permit

EP/MD/17-153

01-Jan-17

30-Jun-17

GCL

For dumping Type I sediment

Marine Dumping Permit

EP/MD/18-031

01-Jul-17

31-Dec-17

GCL

For dumping Type I sediment

Marine Dumping Permit

EP/MD/14-155

01-Apr-14

30-Apr-14

GCL

For dumping Type I (Dedicated Site) and Type II Sediment

Marine Dumping Permit

EP/MD/15-028

01-Jun-14

30-Jun-14

GCL

For dumping Type I (Dedicated Site) and Type II sediment

Marine Dumping Permit

EP/MD/15-066

28-Jul-14

27-Jan-15

GCL

For dumping Type I sediment

Marine Dumping Permit

EP/MD/15-065

01-Aug-14

31-Aug-14

GCL

For dumping Type I (Dedicated Site) and Type II sediment

Marine Dumping Permit

EP/MD/15-098

01-Sep-14

30-Sep-14

GCL

For dumping Type I (Dedicated Site) and Type II sediment

Marine Dumping Permit

EP/MD/15-120

01-Oct-14

31-Oct-14

GCL

For dumping Type I (Dedicated Site) and Type II sediment

Marine Dumping Permit

EP/MD/15-161

25-Nov-14

31-Dec-14

GCL

For dumping Type I (Dedicated Site) and Type II sediment

Marine Dumping Permit

EP/MD/15-186

01-Jan-15

31-Jan-15

GCL

For dumping Type I (Dedicated Site) and Type II sediment

Marine Dumping Permit

EP/MD/15-234

27-Feb-15

31-Mar-15

GCL

For dumping Type I (Dedicated Site) and Type II sediment

Marine Dumping Permit

EP/MD/15-248

27-Mar-15

26-Apr-15

GCL

For dumping Type I (Dedicated Site) and Type II sediment

Marine Dumping Permit

EP/MD/16-002

17-Apr-15

26-May-15

GCL

For dumping Type I (Dedicated Site) and Type II sediment

Marine Dumping Permit

EP/MD/16-020

22-May-15

26-Jun-15

GCL

For dumping Type I (Dedicated Site) and Type II sediment

Marine Dumping Permit

EP/MD/16-049

22-Jul-15

26-Aug-15

GCL

For dumping Type I (Dedicated Site) and Type II sediment

Marine Dumping Permit

EP/MD/16-071

19-Aug-15

26-Sep-15

GCL

For dumping Type I (Dedicated Site) and Type II sediment

Marine Dumping Permit

EP/MD/16-089

22-Sep-15

26-Oct-15

GCL

For dumping Type I (Dedicated Site) and Type II sediment

Marine Dumping Permit

EP/MD/16-112

22-Oct-15

29-Nov-15

GCL

For dumping Type I (Dedicated Site) and Type II sediment

Marine Dumping Permit

EP/MD/16-134

27-Nov-15

29-Dec-15

GCL

For dumping Type I (Dedicated Site) and Type II sediment

Marine Dumping Permit

EP/MD/16-147

18-Dec-15

29-Jan-16

GCL

For dumping Type I (Dedicated Site) and Type II sediment

Marine Dumping Permit

EP/MD/16-166

25-Jan-16

29-Feb-16

GCL

For dumping Type I (Dedicated Site) and Type II sediment

Marine Dumping Permit

EP/MD/16-186

26-Feb-16

31-Mar-16

GCL

For dumping Type I (Dedicated Site) and Type II sediment

Marine Dumping Permit

EP/MD/16-203

29-Mar-16

30-Apr-16

GCL

For dumping Type I (Dedicated Site) and Type II sediment

Marine Dumping Permit

EP/MD/17-028

31-May-16

30-Jun-16

GCL

For dumping Type I (Dedicated Site) and Type II sediment

Marine Dumping Permit

EP/MD/17-047

22-Jun-16

31-Jul-16

GCL

For dumping Type I (Dedicated Site) and Type II sediment

Marine Dumping Permit

 

Marine Dumping Permit

EP/MD/17-066

 

EP/MD/17-084

19-Jul-16

 

22-Aug-16

31-Aug-16

 

30-Sep-16

GCL

 

GCL

For dumping Type I (Dedicated Site) and Type II sediment

For dumping Type I (Dedicated Site) and Type II sediment

Marine Dumping Permit

EP/MD/17-102

28-Sep-16

31-Oct-16

GCL

For dumping Type I (Dedicated Site) and Type II sediment

Marine Dumping Permit

EP/MD/17-141

24-Nov-16

31-Dec-16

GCL

For dumping Type I (Dedicated Site) and Type II sediment

Marine Dumping Permit

EP/MD/17-154

01-Jan-17

31-Jan-17

GCL

For dumping Type I (Dedicated Site) and Type II sediment

Marine Dumping Permit

EP/MD/17-168

01-Feb-17

28-Feb-17

GCL

For dumping Type I (Dedicated Site) and Type II sediment

Marine Dumping Permit

EP/MD/17-185

1-Mar-17

31-Mar-17

GCL

For dumping Type I (Dedicated Site) and Type II sediment

Marine Dumping Permit

EP/MD/17-196

01-Jul-17

31-Jul-17

GCL

For dumping Type II sediment

Marine Dumping Permit

EP/MD/18-047

1-Aug-17

31-Aug-17

GCL

For dumping Type I (Dedicated Site) and Type II sediment

Marine Dumping Permit

EP/MD/18-061

16-Sep-17

15-Oct-17

GCL

For dumping Type I (Dedicated Site) and Type II sediment

Construction Dust Notification

361571

05-Jul-13

N/A

GCL

-

Construction Dust Notification

362093

17-Jul-13

N/A

GCL

For Area 23

Construction Noise Permit

GW-RW0660-13

27-Sep-13

02-Feb-14

GCL

For night works and works in general holidays

Construction Noise Permit

GW-RS1129-13

31-Oct-13

30-Apr-14

GCL

For night works and works in general holidays

Construction Noise Permit

GW-RS1186-13

23-Oct-13

24-Dec-13

GCL

For night works and works in general holidays

Construction Noise Permit

GW-RS1187-13

24-Oct-13

28-Feb-14

GCL

For night works and works in general holidays

Construction Noise Permit

GW-RS1423-13

11-Dec-13

30-Apr-14

GCL

Renewal for marine portion

Construction Noise Permit

GW-RS1413-13

17-Dec-13

26-Mar-14

GCL

For loading and unloading on NLH near viaduct A & B

Construction Noise Permit

GW-RW0925-13

19-Dec-13

17-Apr-14

GCL

Renewal of WA5 site office erection

Construction Noise Permit

GW-RS0034-14

14-Jan-14

29-Mar-14

GCL

For night works and works in general holiday

Construction Noise Permit

GW-RW0123-14

27-Feb-14

27-Aug-14

GCL

For night works and works in general holiday

Construction Noise Permit

GW-RS0236-14

27-Mar-14

14-May-14

GCL

For loading & unloading on NLH near Viaducts A & B

Construction Noise Permit

GW-RS0226-14

30-Mar-14

29-Sep-14

GCL

For loading & unloading on NLH near Viaduct D

Construction Noise Permit

GW-RS0280-14

31-Mar-14

31-May-14

GCL

For excavation at Pier B9

Construction Noise Permit

GW-RS0331-14

04-Apr-14

06-Jul-14

GCL

Broad permit for works at seafront & marine piers

Construction Noise Permit

GW-RS0338-14

04-Apr-14

03-Jun-14

GCL

For bored piling works between Pier E13 and HKBCF

Construction Noise Permit

GW-RS0299-14

07-Apr-14

05-Jul-14

GCL

Pier B8 at CEDD Access Road

Construction Noise Permit

GW-RS0419-14

15-May-14

13-Nov-14

GCL

For loading & unloading on NLH near Viaducts A & B

Construction Noise Permit

GW-RS0646-14

27-Jun-14

26-Oct-14

GCL

Broad Permit for Works at Seafront & Marine Piers & Pier B9

Construction Noise Permit

GW-RS0647-14

28-Jun-14

26-Oct-14

GCL

Pier C7 & D8 at CEDD Access Road

Construction Noise Permit

GW-RS0700-14

21-Jul-14

31-Dec-14

GCL

For loading & unloading on NLH near Viaduct A & B

Construction Noise Permit

GW-RS0792-14

31-Jul-14

24-Dec-14

GCL

Broad Permit for Works at Seafront & Marine Piers & Pier B9

Construction Noise Permit

GW-RS0854-15

12-Aug-14

15-Feb-16

GCL

Pre-casted pile cap shell installation at E10-E13

Construction Noise Permit

GW-RW0640-14

28-Aug-14

27-Feb-15

GCL

General works at WA5

Construction Noise Permit

GW-RS0942-14

11-Sep-14

14-Mar-15

GCL

For plant mobilization using tractor

Construction Noise Permit

GW-RS1032-14

25-Sep-14

28-Mar-15

GCL

For load unload at NLH near Viaduct D

Construction Noise Permit

GW-RS1129-14

17-Oct-14

31-Dec-14

GCL

For safety fences at Pier D9

Construction Noise Permit

GW-RS1130-14

20-Oct-14

22-Apr-15

GCL

For plant mobilization using tractor

Construction Noise Permit

GW-RS1135-14

17-Oct-14

15-Dec-14

GCL

For TTA Case 60-2 Ch.1.3E-3.6E

Construction Noise Permit

GW-RS1188-14

30-Oct-14

31-Dec-14

GCL

For TTA Cases 50 Airport Road-5.3

Construction Noise Permit

GW-RS1225-14

31-Oct-14

02-May-15

GCL

For Broad Permit

Construction Noise Permit

GW-RS1383-14

15-Dec-14

28-Feb-15

GCL

TTA Case 060-12 Ch.1.0-4.2

Construction Noise Permit

GW-RS1386-14

15-Dec-14

15-Mar-15

GCL

TTA Case 009 Ch.2.3E-4.2E

Construction Noise Permit

GW-RS1403-14

15-Dec-14

28-Feb-15

GCL

TTA Case 050 Series Airport Rd to NLH Ch.5.3

Construction Noise Permit

GW-RS0078-15

28-Jan-15

29-Jul-15

GCL

For plant mobilization using tractor with trailer

Construction Noise Permit

GW-RS0084-15

28-Jan-15

30-Apr-15

GCL

Pier B8 formwork erection

Construction Noise Permit

GW-RS0137-15

12-Feb-15

15-Aug-15

GCL

Pre-casted pile cap shell installation at E10-E13

Construction Noise Permit

GW-RS0206-15

24-Feb-15

30-Apr-15

GCL

B9-B16 Pier Head Segments Erection

Construction Noise Permit

GW-RW0093-15

26-Feb-15

26-Aug-15

GCL

General works at WA5

Construction Noise Permit

GW-RS0212-15

02-Mar-15

04-Jun-15

GCL

Pier A8A9 Safety Fence Erection

Construction Noise Permit

GW-RS0225-15

13-Mar-15

12-May-15

GCL

TTA Case 009 Ch.2.1E-4.2E

Construction Noise Permit

GW-RS0266-15

20-Mar-15

30-Apr-15

GCL

B8 Pier Head Segment Erection and Formwork Installation

Construction Noise Permit

GW-RS0307-15

27-Mar-15

27-Sep-15

GCL

For Load unload at NLH near Viaduct D

Construction Noise Permit

GW-RS0326-15

30-Mar-15

31-May-15

GCL

B9-B16 Pier Head Segments Erection

Construction Noise Permit

GW-RS1406-15

30-Mar-15

31-May-15

GCL

B9-B16 Pier Head Segments Erection

Construction Noise Permit

GW-RS0470-14

29-Apr-15

28-Oct-15

GCL

For Broad Permit

Construction Noise Permit

GW-RS0489-15

08-May-15

07-Aug-15

GCL

B8 Pier Head Temp Works Lifting

Construction Noise Permit

GW-RS0491-15

08-May-15

30-Jun-15

GCL

TTA Case 009 Ch.2.1E-4.2E

Construction Noise Permit

GW-RS0539-15

14-May-15

31-Jul-15

GCL

B9-B16 Pier Head Segments Erection

Construction Noise Permit

GW-RS0691-15

23-Jun-15

22-Dec-15

GCL

For Broad Permit

Construction Noise Permit

GW-RW0695-15

30-Jun-15

30-Nov-15

GCL

Segment Erection between B6-B11 by LG1

Construction Noise Permit

GW-RS0769-15

15-Jul-15

30-Sep-15

GCL

TTA Case 009 Ch.2.1E-4.2E

Construction Noise Permit

GW-RS0809-15

29-Jul-15

29-Jan-16

GCL

For plant mobilization using tractor with trailer

Construction Noise Permit

GW-RS0855-15

12-Aug-15

11-Feb-16

GCL

Pier construction at C7, D8, D9

Construction Noise Permit

GW-RW0861-15

13-Aug-15

30-Sep-15

GCL

Portal beam installation at Pier D14

Construction Noise Permit

GW-RW0422-15

21-Aug-15

25-Jan-16

GCL

General works at WA5

Construction Noise Permit

GW-RS0911-15

27-Aug-15

26-Feb-16

GCL

Broad Permit for Seg. Launching at Land Portion

Construction Noise Permit

GW-RS1054-15

30-Sep-15

29-Mar-16

GCL

For Load unload at NLH near Viaduct D

Construction Noise Permit

GW-RS1086-15

07-Oct-15

15-Dec-15

GCL

TTA Case 009 Ch.2.1E-4.2E

Construction Noise Permit

GW-RS1144-15

20-Oct-15

19-Feb-16

GCL

For Broad Permit

Construction Noise Permit

GW-RS1046-15

04-Jan-16

31-Jan-16

GCL

Erection of GT324, GT326-GT328 sign gantry leg

Construction Noise Permit

GW-RW0045-16

27-Jan-16

25-Jul-16

GCL

General works at WA5

Construction Noise Permit

GW-RS0080-16

01-Feb-16

30-Apr-16

GCL

For Broad Permit

Construction Noise Permit

GW-RS0056-16

01-Feb-16

31-Mar-16

GCL

Broad Permit for Segment Launching at Land Portion

Construction Noise Permit

GW-RS0109-16

05-Feb-16

14-Aug-16

GCL

Pre-casted pile cap shell installation at E10-E13

Construction Noise Permit

GW-RS0279-16

29-Mar-16

30-May-16

GCL

Broad Permit for Segment Launching at Land Portion

Construction Noise Permit

GW-RS0383-16

20-Apr-16

19-Oct-16

GCL

For Broad Permit

Construction Noise Permit

GW-RW0504-16

25-May-16

31-Aug-16

GCL

Broad Permit for Segment Launching at Land Portion

Construction Noise Permit

GW-RW0339-16

17-Jun-16

19-Dec-16

GCL

General works at WA5

Construction Noise Permit

GW-RW0707-16

11-Jul-16

30-Sep-16

GCL

Broad Permit for Segment Launching at Land Portion

Construction Noise Permit

GW-RS0718-16

13-Jul-16

13-Jan-17

GCL

Pre-casted pile cap shell installation at E10-E13

Construction Noise Permit

GW-RS0958-16

15-Sep-16

30-Nov-16

GCL

Broad Permit for Segment Launching at Land Portion

Construction Noise Permit

GW-RS1044-16

14-Oct-16

13-Apr-17

GCL

Pre-casted pile cap shell installation at E8-E13

Construction Noise Permit

GW-RS1045-16

14-Oct-16

13-Apr-17

GCL

For Broad Permit

Construction Noise Permit

GW-RS1159-16

24-Nov-16

28-Feb-17

GCL

Broad Permit for Segment Launching at Land Portion

Construction Noise Permit

GW-RS1158-16

24-Nov-16

31-Dec-16

GCL

Contingency plan for DN1000 works at Tung Chung Seafront Road

Construction Noise Permit

GW-RS1309-16

20-Dec-16

19-Jun-17

GCL

Broad Permit for Whole Site Areas

Construction Noise Permit

GW-RS0082-17

15-Feb-17

31-Mar-17

GCL

Water Pipe Works at Tung Chung

Construction Noise Permit

GW-RS0157-17

28-Feb-17

31-May-17

GCL

Broad Permit for Segment Launching at Land Portion

Construction Noise Permit

GW-RS0295-17

13-Apr-17

12-Oct-17

GCL

Pre-casted pile cap shell installation at E8-E13

Construction Noise Permit

GW-RS0408-17

11-May-17

30-Sep-17

GCL

Pre-casted pile cap shell installation at E8-E13

Construction Noise Permit

GW-RS0456-17

31-May-17

31-Jul-17

GCL

Broad Permit for Segment Launching at Land Portion

Construction Noise Permit

PP-RS0010-17

12-Jun-17

15-Sep-17

GCL

Percussive piling at Portion A

Construction Noise Permit

GW-RW0294-17

19-Jun-17

18-Dec-17

GCL

General works at WA5

Construction Noise Permit

GW-RS0540-17

20-Jun-17

15-Dec-17

GCL

Broad Permit for Whole Site Areas

Construction Noise Permit

GW-RS0639-17

31-Jul-17

29-Sep-17

GCL

Broad Permit for Segment Launching at Land Portion

Construction Noise Permit

GW-RS0668-17

7-Aug-17

6-Feb-18

GCL

Pre-casted pile cap shell installation at E8-E13

Construction Noise Permit

GW-RS0688-17

17-Aug-17

31-Aug-17

GCL

Contingency plan for DN800T works at Tung Chung Seafront Road

Construction Noise Permit

GW-RS0829-17

29-Sep-17

30-Nov-17

GCL

Broad Permit for Segment Launching at Land Portion

Construction Noise Permit

GW-RS0954-17

5-Nov-17

30-Nov-17

GCL

Contingency plan for DN800T works at Tung Chung Seafront Road

Construction Noise Permit

GW-RS1025-17

30-Nov-17

31-Dec-17

GCL

Broad Permit for Segment Launching at Land Portion

Construction Noise Permit

GW-RS1112-17

14-Dec-17

31-Mar-18

GCL

Broad Permit for Whole Site Areas

Construction Noise Permit

GW-RW0650-17

19-Dec-17

18-Jun-18

GCL

General works at WA5

Construction Noise Permit

GW-RS1153-17

31-Dec-17

31-Mar-18

GCL

Broad Permit for Segment Launching at Land Portion

Construction Noise Permit

GW-RS0064-18

1-Feb-18

29-Jul-18

GCL

Pre-casted pile cap shell installation at E8-E13

Construction Noise Permit

GW-RS0201-18

12-Mar-18

30-Apr-18

GCL

Broad Permit for Segment Launching at Land Portion

Construction Noise Permit

GW-RS0244-18

30-Mar-18

29-Sep-18

GCL

Broad Permit for Whole Site Areas

Construction Noise Permit

GW-RS0328-18

30-Apr-18

29-Jun-18

GCL

Broad Permit for Segment Launching at Land Portion

Construction Noise Permit

GW-RS0411-18

26-May-18

31-May-18

GCL

Street Lamp Replacement at East Coast Road

Construction Noise Permit

GW-RS0426-18

11-Jun-18

31-Jul-18

GCL

Broad Permit for Segment Launching at Land Portion

Construction Noise Permit

GW-RW0235-18

21-Jun-18

18-Dec-18

GCL

General works at WA5

Construction Noise Permit

GW-RS0657-18

1-Aug-18

31-Oct-18

GCL

Cover Traffic Sign at Tung Chung

Construction Noise Permit

GW-RS0658-18

1-Aug-18

22-Aug-18

GCL

East Coast Road Street Light Repairing

Construction Noise Permit

GW-RS0654-18

1-Aug-18

30-Sep-18

GCL

Broad Permit for Segment Launching at Land Portion

Construction Noise Permit

GW-RS0752-18

28-Aug-18

31-Oct-18

GCL

Traffic Light Installation

Construction Noise Permit

GW-RS0909-18

16-Oct-18

30-Nov-18

GCL

Road milling and paving at Airport Road

Construction Noise Permit

GW-RS0911-18

12-Oct-18

30-Oct-18

GCL

Broad Permit for Segment Launching at Land Portion

Construction Noise Permit

GW-RS0235-18

23-Jan-19

13-Jun-19

GCL

General works at WA5

Construction Noise Permit

GW-RW0012-19

23-Jan-19

13-Jun-19

GCL

General works at WA5

Construction Noise Permit

GW-RW0266-19

21-Jun-19

13-Dec-19

GCL

General works at WA5

Construction Noise Permit

GW-RS0740-18

20-Aug-18

16-Feb-19

GCL

Broad Permit for Whole Site Areas

Construction Noise Permit

GW-RS0909-18

16-Oct-18

30-Nov-18

GCL

Road milling and paving at Airport Road

Construction Noise Permit

GW-RS1009-18

07-Nov-18

30-Nov-18

GCL

Chung Tung Road Street Light Removal

Construction Noise Permit

GW-RS1085-18

28-Nov-18

31-Dec-18

GCL

Maintenance of Traffic Sign in Tung Chung

Construction Noise Permit

GW-RS1118-18

6-Dec-18

31-Dec-18

GCL

Fencing Removal at Seafront

Construction Noise Permit

GW-RW012-19

23-Jan-19

13-Jun-19

GCL

Broad Permit for Whole Site Areas

Construction Noise Permit

GW-RS0149-19

19-Feb-19

15-July-19

GCL

Broad Permit for Whole Site Areas

Construction Noise Permit

GW-RS0507-19

13-Jun-19

11-Dec-19

GCL

Broad Permit for Whole Site Areas

Construction Noise Permit

GW-RS0728-19

16-Aug-19

25-Oct-19

GCL

Defect repairing at under-bridge of Viaduct A, B, C and D

Construction Noise Permit

GW-RS0977-19

7-Nov-19

16-Dec-19

GCL

Defect Repairing at under-bridge of Viaduct A, B, C and D

Construction Noise Permit

GW-RS1067-19

2-Dec-19

31-Dec-19

GCL

Resurfacing Works at Pak Mong

Construction Noise Permit

GW-RS1108-19

12-Dec-19

11-Jun-20

GCL

Broad Permit for Whole Site Areas

Construction Noise Permit

GW-RW0592-19

18-Dec-19

13-Jun-20

GCL

General works at WA5

Construction Noise Permit

GW-RS1214-19

16-Jan-20

14-Feb-20

GCL

Defect Repairing at under-bridge of Viaduct B and C

Construction Noise Permit

GW-RS0153-20

19-Mar-20

31-Mar-20

GCL

Defect Repairing at under-bridge of Viaduct B and C


2.10                        Implementation Status of Environmental Mitigation Measures

A summary of the Environmental Mitigation and Enhancement Measure Implementation Schedules (EMIS) is presented in Appendix B.  The necessary mitigation measures were implemented properly for this Contract.

2.11                        Summary of Exceedances of the Environmental Quality Performance Limit

 Impact air quality monitoring, construction noise monitoring, impact water quality and post-construction water quality monitoring, dolphin monitoring, post-translocation coral monitoring and bored piling monitoring were conducted for this Contract in accordance with the updated EM&A Manual.

2 Limit Level exceedances of 1-hour TSP and 2 Action Level exceedances of 24-hour TSP were recorded for air quality monitoring in the impact monitoring period.

No exceedance of Action and Limit Levels was recorded for construction noise monitoring during the impact monitoring period.

18 Action Level and 1 Limit Level exceedances of Suspended Solids (SS), 1 Action Level and 1 Limit Level exceedances of Turbidity and 253 Action Level and 25 Limit Level exceedances of Dissolved Oxygen (DO) were recorded for water quality monitoring during the impact monitoring period.

11 Action Level and 19 Limit Level exceedances were recorded for dolphin monitoring during the impact monitoring period.

Actions were taken in accordance with the Event Action Plan as presented in Appendix H.

2.12                        Summary of Complaints, Notification of Summons and Successful Prosecutions

The Environmental Complaint Handling Procedure is provided in Figure 2.5.

There was no notification of summons or prosecution recorded in the impact monitoring period. 

A total of 14 environmental complaints were received in the impact monitoring period.  Investigations were conducted for the environmental complaints in accordance with the complaint handling process as stated in the Complaint Management Plan.  Environmental complaints in the impact monitoring period are summarized in Table 2.25 below.

Table 2.25        Summary of Environmental Complaints

 

Complaint(s)

Investigation/Follow up action(s)

1

Complaint was referred by EPD in June 2015 with regard to the dust emission from trucks.

The complaints were handled in accordance with Environmental Complaint Handling Procedure and considered not related to this Contract upon further investigation.

2

Complaint was referred by EPD in October 2015 with regard to potential noise from nighttime works.

The complaints were handled in accordance with Environmental Complaint Handling Procedure and considered not related to this Contract upon further investigation.

3

Complaint was referred by EPD in June 2015 regarding to the dust emission from dump trucks.

The complaints were followed up in accordance with the complaint handling procedure.  Proper mitigation measures were recommended to the Contractor to minimize the corresponding impacts.

4

Complaint was referred by EPD in October 2015 regarding to potential noise from nighttime works.

 

The complaints were followed up in accordance with the complaint handling procedure.  Proper mitigation measures were recommended to the Contractor to minimize the corresponding impacts.

5

Complaint received from EPD on 22 September 2016 regarding effluent discharge from flat top barge.

Upon investigation, there was no adequate evidence to conclude that the complaint case was related to this Project.

6

Complaint received from EPD regarding muddy plume caused by a barge’s propeller wash near Tung Chung New Development Ferry Pier on 9 November 2016.

Upon investigation, there were no adequate evidences to conclude that the complaint cases were related to this Project.

7

Complaint received from EPD regarding hammering noise nuisance generated during midnights on 13 December 2016.

Upon investigation, there were no adequate evidences to conclude that the complaint cases were related to this Project.

8

Complaint received from EPD regarding constructional vessels and silt curtain found within the boundary of Brothers Marine Park on 13 January 2017.

Upon investigation, there were no adequate evidences to conclude that the complaint cases were related to this Project.

9

Complaint received from EPD regarding noise nuisance and muddy water from construction sites of Hong Kong Boundary Crossing Facilities of Hong Kong-Zhuhai-Macao Bridge related Hong Kong projects on 28 March 2017.

Upon investigation, there were no adequate evidences to conclude that the complaint cases were related to this Project.

10

Complaint received from EPD regarding construction dust nuisance near site exit of Hong Kong Boundary Crossing Facilities of Hong Kong-Zhuhai-Macao Bridge related Hong Kong projects was received on 31 May 2017.

Upon investigation, there were no adequate evidences to conclude that the complaint cases were related to this Contract.

11

A complaint was received by EPD regarding construction dust nuisance at Hong Kong Boundary Crossing Facilities (HKBCF) of Hong Kong–Zhuhai–Macau Bridge (HZMB) Projects on 24 November 2017.

Upon investigation, there were no adequate evidences to conclude that the complaint cases were related to this Contract.

12

A complaint was received by EPD regarding a suspected sighting of dolphin near the viaduct at Tai Ho Wan and construction materials failing from the nearby elevated structures on 29 January 2018.

Upon investigation, there were no adequate evidences to conclude that the complaint cases were related to this Contract.

13

A complaint was received from 1823 regarding discharge of muddy water nearby HKBCF on 13 June 2018.

Upon investigation, there were no adequate evidences to conclude that the complaint cases were related to this Contract.

14

A complaint was received from 1823 regarding construction noise nuisance nearby the Kowloon-boundary lane of the North Lantau Highway on 16 June 2018.

Upon investigation, there were no adequate evidences to conclude that the complaint cases were related to this Contract.

Statistics on complaints, notifications of summons, successful prosecutions are summarised in Annex J.

3                                    Conclusion and Recommendations

The construction phase EM&A programme for the Contract commenced on 31 October 2013 and was terminated since 16 March 2020.

This is the Final EM&A Report under the Contract No. HY/2012/07 presents a summary of the environmental monitoring and audit works from 31 October 2013 to 16 March 2020, in accordance with the Updated EM&A Manual and the requirements of the Environmental Permits. 

The review of monitoring data suggested that the construction works under this Contract have proceeded in an environmentally acceptable manner in the impact monitoring period.  In general, the monitoring results were in line with EIA predictions.

The EM&A programme was considered as adequate and effective in monitoring impacts arising from the Contract.


                       



([1])      Agreement No. CE 35/2011 (EP) Baseline Environmental Monitoring for Hong Kong - Zhuhai - Macao Bridge Hong Kong Projects - Investigation.  Baseline Environmental Monitoring Report (Version C).  Submitted on 8 March 2012 and subsequently approved by EPD

([2])      Agreement No. CE 35/2011 (EP) Baseline Environmental Monitoring for Hong Kong - Zhuhai - Macao Bridge Hong Kong Projects - Investigation.  Baseline Environmental Monitoring Report (Version C).  Submitted on 8 March 2012 and subsequently approved by EPD

([3])      Agreement No. CE 35/2011 (EP) Baseline Environmental Monitoring for Hong Kong - Zhuhai - Macao Bridge Hong Kong Projects - Investigation.  Baseline Environmental Monitoring Report (Version C).  Submitted on 8 March           2012 and subsequently approved by EPD.

([4])     Published EM&A data for impact water quality monitoring by Contract No. HY/2010/02 are available at:           http://www.hzmbenpo.com/

([5])     Technical issues have been observed from impact monitoring of the Contract and thus published information is           adopted from Contract No. HY/2010/02 Hong Kong-Zhuhai-Macao Bridge Hong Kong Boundary Crossing           Facilities – Reclamation Works.

([6])      Published EM&A data for impact water quality monitoring by Contract No. HY/2012/08 are available at: http://www.hzmbenpo.com/

([7]) Agreement No. CE 48/2011 (EP) Baseline Environmental Monitoring for Tuen Mun-Chek Lap Kok Link Southern Connection Viaduct Section.  Baseline Environmental Monitoring Report.  Submitted on 19 February 2014 and subsequently accepted with no comment by EPD.


 [CW1]67+4 sessions at ASR9C/ASR8

64+68+69+70+49 sessions at ASR9

 

 [CW2]67+4 sessions at ASR9C/ASR8

64+68+70+70+49 sessions at ASR9

 

 [CW3]67+4 sessions at NSR1

64+68+70+70+57 sessions at NSR1A

 

 [JT4]Just to check if really nearly all 7.0?

 [JT5]As above

 [JT6]As above