table of Contents

Executive Summary                                                             

1                      Introduction                                                                          

1.1                   Background                                                                           

1.2                   Scope of Report                                                                   

1.3                   Organization Structure                                                 

1.4                   Summary of Construction Works                              

2                      EM&A Results                                                                         

2.1                   Air quality                                                                               

2.2                   Water Quality Monitoring                                              

2.3                   Dolphin Monitoring                                                            

2.4                   EM&A Site Inspection                                                           

2.5                   Waste Management Status                                             

2.6                   Environmental Licenses and Permits                        

2.7                   Implementation Status of Environmental Mitigation Measures  

2.8                   Summary of Exceedances of the Environmental Quality Performance Limit                                                                                                       

2.9                   Summary of Complaints, Notification of Summons and Successful Prosecutions                                                                         

3                      Future Key Issues                                                                

3.1                   Construction Activities for the Coming Quarter   

3.2                   Key Issues for the Coming Quarter                           

3.3                   Monitoring Schedule for the Coming Quarter   

4                      Conclusions                                                                           

 

Appendix A   Project Organization

Appendix B   Construction Programme

Appendix C                          Environmental Mitigation And Enhancement Measure Implementation Schedules (EMIS)

Appendix D   Action And Limit Levels

Appendix E   Monitoring Schedule

Appendix F   Air Quality Monitoring Results

Appendix G            Impact Dolphin Monitoring

Appendix H   Event And Action Plan

Appendix I      Cumulative Statistics On Exceedance And Complaint

Appendix J   Waste Flow Table

 

 

Executive Summary

Under Contract No. HY/2012/08, Dragages – Bouygues Joint Venture (DBJV) is commissioned by the Highways Department (HyD) to undertake the design and construction of the Northern Connection Sub-sea Tunnel Section of the Tuen MunChek 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) in accordance with Environmental Permit No. EP-354/2009/A. Ramboll Environ Hong Kong Ltd. was employed by HyD as the Independent Environmental Checker (IEC) and Environmental Project Office (ENPO).  Subsequent applications for variation of environmental permits (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 construction phase of the Project commenced on 1 November 2013 and will tentatively be completed by the end of 2018.  The impact monitoring of the EM&A programme, including air quality, water quality, marine ecological monitoring and environmental site inspections, were commenced on 1 November 2013.

This is the Eleventh Quarterly EM&A report presenting the EM&A works carried out during the period from 1 June 2016 to 31 August 2016 for the Contract No. HY/2012/08 Northern Connection Sub-sea Tunnel Section (the “Project”) in accordance with the Updated EM&A Manual of the TM-CLK Link Project. As informed by the Contractor, the major activities in the reporting quarter included:

Land-based Works

·      Box Culvert Extension at Works Area – Portion N-A;

·      Shaft Structure and Backfilling – Portion N-C;

·      Construction of Cross Passage Tympanum – TBM tunnel;

·      Excavation of Sub-sea Tunnel – TBM tunnel;

·      Thrust Frame Removal – TBM tunnel;

·      Cross Passage Lining Installation – TBM Tunnel;

·      Corbel Construction – TBM Tunnel;

·      Sub-sea Tunnel Gallery Installation – TBM tunnel;

·      Slab Construction of Tunnel Protection Enhancement – TBM tunnel;

·      Deep Band Drain Installation – Portion S-A;

·      Dewatering Deep well Installation – Portion S-A; and

·      Jet Grouting, CSM Ground Treatment and Diaphragm Wall Construction – Portion S-A.

.

 

A summary of monitoring and audit activities conducted in the reporting period is listed below:

24-hour TSP Monitoring                       31 sessions

1-hour TSP Monitoring                                  31 sessions

Impact Dolphin Monitoring                             6 sessions

Joint Environmental Site Inspection     14 sessions

Implementation of Marine Mammal Exclusion Zone

There was no dredging, reclamation or marine sheet piling works in open waters during this reporting period.  Thus, Passive Acoustic Monitoring (PAM) and the day-time monitoring of Dolphin Exclusion Zone (DEZ) by dolphin observers were not in effect during the reporting period.

Summary of Breaches of Action/Limit Levels

Breaches of Action and Limit Levels for Air Quality

No exceedances were recorded from the air quality monitoring in this reporting period.

Dolphin Monitoring

Whilst one (1) Limit Level exceedance was observed for the quarterly dolphin monitoring data between June and August 2016, no unacceptable impact from the construction activities of the TM-CLKL Northern Connection Sub-sea Tunnel Section on Chinese White Dolphins was noticeable from general observations during the dolphin monitoring in this reporting quarter.

Environmental Complaints, Non-compliance & Summons

No non-compliance with EIA recommendations, EP conditions and other requirements associated with the construction of this Contract was recorded in this reporting period.

Two environmental complaints regarding muddy water discharge near the Pier at 33 Ho Yeung Street, Tuen Mun at Northern Landfall and marine litter disposal near Tuen Mun Ferry Pier were received from EPD on 6 July 2016 and from ENPO on 16 July 2016 respectively.  Upon investigation, the complaints were considered not related to this Project.

No notification of summons or successful prosecution recorded in the reporting period.

Reporting Change

There was no reporting change required in the reporting period.

 

Upcoming Works for the Next Reporting Period

Works to be undertaken in the coming quarterly period include the following:

Land-based works

·      Box Culvert Extension at Works Area – Portion N-A;

·      Preparation of Phase 2 Reclamation – Portion N-A;

·      Shaft Structure and Backfilling – Portion N-C;

·      Construction of Cross Passage Tympanum – TBM tunnel;

·      Cross Passage Lining Installation – TBM Tunnel;

·      Corbel Construction – TBM Tunnel;

·      Excavation of Sub-sea Tunnel – TBM tunnel;

·      Sub-sea Tunnel Gallery Installation – TBM tunnel;

·      Deep Band Drain Installation – Portion S-A;

·      Dewatering Deep well Installation – Portion S-A; and

·      Jet Grouting, CSM Ground Treatment and Diaphragm Wall Construction – Portion S-A

Future Key Issues

As informed by the Contractor, Phase I Reclamation works for the Northern Landfall was substantially completed in December 2014, a proposal letter was sent to EPD on 21 May 2015 to seek approval for the temporary suspension of Water Quality Monitoring.  Subsequently, a letter from EPD on 5 June 2015 stated that they have no strong objection to the temporary suspension of the water quality monitoring.  Water Quality Monitoring was suspended from 6 June 2015 effectively and will resume when Phase II Reclamation commences in the fourth quarter of 2016 tentatively. 

Potential environmental impacts arising from the above upcoming construction activities in the coming quarterly period are expected to be mainly associated with dust, marine ecology and waste management issues.


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 MunChek 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 (VEP) (EP-354/2009A) was issued on 8 December 2010.  Subsequent applications for variation of environmental permits (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.

Under Contract No. HY/2012/08, Dragages – Bouygues Joint Venture (DBJV) is commissioned by the Highways Department (HyD) to undertake the design and construction of the Northern Connection Sub-sea Tunnel Section of TM-CLKL 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) in accordance with Environmental Permit No. EP-354/2009/A.  Ramboll Environ Hong Kong Ltd. was employed by HyD as the Independent Environmental Checker (IEC) and Environmental Project Office (ENPO).

Layout of the Contract components is presented in Figure 1.1.

The construction phase of the Contract commenced on 1 November 2013 and will tentatively be completed by 2018.  The impact monitoring phase of the EM&A programme, including air quality, water quality, marine ecological monitoring and environmental site inspections, were commenced on 1 November 2013.

1.2                                    Scope of Report

This is the Eleventh Quarterly EM&A Report under the Contract No. HY/2012/08 Tuen MunChek Lap Kok Link – Northern Connection Sub-sea Tunnel Section.  This report presents a summary of the environmental monitoring and audit works from 1 June 2016 to 31 August 2016.

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

Highways Department

 

Engr 16/HZMB

Kenneth Lee

2762 4996

3188 6614

SOR

(AECOM Asia Company Limited)

 

Chief Resident Engineer

Edwin Ching

 

Andrew Westmoreland

 

2293 6388

 

2293 6360

2293 6300

 

2293 6300

ENPO / IEC

(Ramboll Environ Hong Kong Ltd.)

ENPO Leader

 

Y.H. Hui

3465 2850

3465 2899

IEC

 

Dr. F.C. Tsang

3465 2851

3465 2899

Contractor

(Dragages – Bouygues Joint Venture)

Environmental Manager

 

C.F. Kwong

2293 7322

2293 7499

Environmental Officer

 

Bryan Lee

 

 

2293 7323

 

 

2293 7499

 

Environmental Officer

 

David Ho

6628 8684

2293 7499

 

24-hour complaint hotline

 

Rachel Lam

2293 7330

 

ET (ERM-HK)

ET Leader

Jovy Tam

2271 3113

2723 5660

 

1.4                                    Summary of Construction Works

The construction phase of this Contract was commenced on 1 November 2013.  The construction programme is shown in Appendix B.

As per DBJV’s information, details of major construction works carried out in this reporting period are summarized in Table 1.2.

The general layout plan of the site showing the detailed works areas is shown in Figure 1.2.  The Environmental Sensitive Receivers in the vicinity of the Project are shown in Figure 1.3.

The implementation schedule of environmental mitigation measures is presented in Appendix C.

Table 1.2        Summary of Construction Activities Undertaken during the Reporting Period

Construction Activities Undertaken

Land-based Works

Portion N-A

·         Box Culvert Extension

Portion N-C

·         Shaft Structure and Backfilling

TBM tunnel

·         Construction of Cross Passage Tympanum

·         Cross Passage Lining Installation

·         Corbel Construction

·         Excavation of Sub-sea Tunnel

·         Thrust Frame Removal

·         Sub-sea Tunnel Gallery Installation

·         Slab Construction of Tunnel Protection Enhancement

Portion S-A

·         Deep Band Drain Installation

·         Dewatering Deep well Installation

·         Jet Grouting, CSM Ground Treatment and Diaphragm Wall Construction

 

Figure 1.2      Locations of Construction Activities – June 2016 to August 2016

 

 

2                                          EM&A Results

The EM&A programme required environmental monitoring for air quality, 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

As per the requirements under Condition 2.4 of EP-354/2009/D, the Enhanced TSP Monitoring Plan has been prepared under Contract No. HY/2012/08.  Details of the monitoring plan are presented in the Enhanced TSP Monitoring Plan ([1]).  

2.1.1                              Monitoring Requirements and Equipment

In accordance with the Updated EM&A Manual and the Enhanced TSP Monitoring Plan, 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.  1-hr and 24-hr TSP monitoring frequency was increased to three times per day every three days and daily every three days respectively as excavation works for launching shaft commenced on 24 October 2014.

High volume samplers (HVSs) were used to carry out the 1-hour and 24-hour TSP monitoring in the reporting quarter at the five (5) air quality monitoring stations in accordance with the requirements stipulated in the Updated EM&A Manual (Figure 2.1; Table 2.1).  Wind anemometer was installed at the rooftop of ASR5 for logging wind speed and wind direction.  Details of the equipment deployed are provided in Table 2.2.
Table
2.1         Locations of Impact Air Quality Monitoring Stations and Monitoring Dates in this Reporting Period

Monitoring Station

Location

Description

Parameters & Frequency

Monitoring Dates

ASR1

Tuen Mun Fireboat Station

Office

TSP monitoring

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

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

Enhanced TSP monitoring (commenced on 24 October 2014)

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

Ÿ  24-hour Total Suspended Particulates (24-hour TSP, µg/m3), daily for 24-hour in every 3 days

1, 4, 7, 10, 13, 16, 19, 22, 25 and 28 June 2016;

1, 4, 7, 10, 13, 16, 19, 22, 25, 28 and 31 July 2016; and

3, 6, 9, 12, 15, 18, 21, 24, 27 and 30 August 2016

ASR5

Pillar Point Fire Station

Office

AQMS1

Previous River Trade Golf

Bare ground

ASR6

Butterfly Beach Laundry

Office

ASR10

Butterfly Beach Park

Recreational uses

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 Meter

Davis (Model: Weather Wizard III (S/N: WE90911A30) / Davis (Model: Vantage Pro 2 (S/N: AS160104014)

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 is provided in Appendix D.  The Event and Action plan is presented in Appendix H.

2.1.3                              Monitoring Schedule for the Reporting Quarter

The schedules for air quality monitoring in the reporting quarter are provided in Appendix E.

2.1.4                              Results and Observations

Impact air quality monitoring was conducted at all designated monitoring stations in the reporting period under favourable weather conditions.  The major dust sources in the reporting period include construction activities under the Contract as well as nearby traffic emissions. 

The monitoring results for 1-hour TSP and 24-hour TSP are summarized in Tables 2.3 and 2.4, respectively.  Monitoring results are presented graphically in Appendix F and detailed impact air quality monitoring data were reported in the Thirty-two to Thirty-four Monthly EM&A Report. 

Table 2.3        Summary of 1-hour TSP Monitoring Results in this Reporting Period

Month/Year

Station

Average (µg/m3)

Range (µg/m3)

Action Level  (µg/m3)

Limit Level  (µg/m3)

June 2016 to August 2016

ASR 1

77

44 - 170

331

500

ASR 5

100

47 - 199

340

500

AQMS1

65

45 – 128

335

500

ASR6

89

44 – 162

338

500

ASR10

68

33 – 128

337

500

Table 2.4        Summary of 24-hour TSP Monitoring Results in this Reporting Period

Month/Year

Station

Average (µg/m3)

Range (µg/m3)

Action Level  (µg/m3)

Limit Level  (µg/m3)

June 2016 to August 2016

ASR 1

56

44 - 88

213

260

ASR 5

59

43 - 84

238

260

AQMS1

47

39 – 65

213

260

ASR6

54

39 – 76

238

260

ASR10

52

43 – 73

214

260

No Action or Limit Level exceedances for 1-hr TSP were recorded.  No Action or Limit Level exceedances for 24-hr TSP were recorded.  Summary of Exceedances for Air Quality Impact Monitoring in this Reporting Quarter is detailed in Table 2.13.

2.2                                    Water Quality Monitoring

As informed by the Contractor, Phase I Reclamation works for the Northern Landfall was substantially completed in December 2014, a proposal letter was sent to EPD on 21 May 2015 to seek approval for the temporary suspension of Water Quality Monitoring.  Subsequently, a letter from EPD on 5 June 2015 stated that they have no strong objection to the temporary suspension of the water quality monitoring.  Water Quality Monitoring was suspended from 6 June 2015 effectively and will resume when Phase II Reclamation commences in the fourth quarter of 2016 tentatively. 

2.3                                    Dolphin Monitoring

2.3.1                              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 dolphins.  In order to fulfil the EM&A requirements and make good use of available resources, the on-going impact line transect dolphin monitoring data 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 on the monthly basis is adopted to avoid duplicates of survey effort.         

2.3.2                              Monitoring Equipment

Table 2.5 summarizes the equipment used for the impact dolphin monitoring.

Table 2.5        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

 

 

 

2.3.3                              Monitoring Parameter, Frequencies & Duration

Dolphin monitoring should cover 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 should be 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.

2.3.4                              Monitoring Location

The impact dolphin monitoring was carried out in the NEL and NWL along the line transect as depicted in Figure 2.2.  The co-ordinates of all transect lines are shown in Table 2.6 below.


Table 2.6        Impact Dolphin Monitoring Line Transect Co-ordinates

Line No.

Easting

Northing

Line No.

Easting

Northing

1

Start Point

804671

815456

13

Start Point

816506

819480

1

End Point

804671

831404

13

End Point

816506

824859

2

Start Point

805475

815913

14

Start Point

817537

820220

2

End Point

805477

826654

14

End Point

817537

824613

3

Start Point

806464

819435

15

Start Point

818568

820735

3

End Point

806464

822911

15

End Point

818568

824433

4

Start Point

807518

819771

16

Start Point

819532

821420

4

End Point

807518

829230

16

End Point

819532

824209

5

Start Point

808504

820220

17

Start Point

820451

822125

5

End Point

808504

828602

17

End Point

820451

823671

6

Start Point

809490

820466

18

Start Point

821504

822371

6

End Point

809490

825352

18

End Point

821504

823761

7

Start Point

810499

820880

19

Start Point

822513

823268

7

End Point

810499

824613

19

End Point

822513

824321

8

Start Point

811508

821123

20

Start Point

823477

823402

8

End Point

811508

824254

20

End Point

823477

824613

9

Start Point

812516

821303

21

Start Point

805476

827081

9

End Point

812516

824254

21

End Point

805476

830562

10

Start Point

813525

820872

22

Start Point

806464

824033

10

End Point

813525

824657

22

End Point

806464

829598

11

Start Point

814556

818853

23

Start Point

814559

821739

11

End Point

814556

820992

23

End Point

814559

824768

12

Start Point

815542

818807

 

 

 

 

12

End Point

815542

824882

 

 

 

 

2.3.5                              Action & Limit Levels

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


2.3.6                              Monitoring Schedule for the Reporting Period

The dolphin monitoring schedules for the reporting period are shown in Appendix E.

2.3.7                              Results & Observations

A total of 897.06 km of survey effort was conducted, with 92.5% of the total survey effort being conducted under favourable weather conditions (ie Beaufort Sea State 3 or below with good visibility) in this reporting quarter.  Amongst the two areas, 341.80 km and 555.26 km of survey effort were conducted from NEL and NWL survey areas, respectively.  The total survey effort conducted on primary and secondary lines were 648.70 km and 248.36 km, respectively.  The survey efforts are summarized in Appendix G.

A total of 10 groups of 34 Chinese White Dolphins sightings were recorded during the six sets of surveys in this reporting quarter.  Seven of the ten dolphin sightings were made during on-effort search, and all seven on-effort dolphin sightings were made on primary lines.  During this reporting quarter, all except one dolphin groups were sighted in NWL, while an off-effort of a lone dolphin was sighted in NEL.

Encounter rates of Chinese White Dolphins are deduced from the survey effort and on-effort sighting data made under favourable conditions (Beaufort 3 or below with good visibility) in the reporting quarter with the results and comparison with baseline results present in Tables 2.7 and 2.8.

Table 2.7        Individual Survey Event 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)

Primary Lines Only

Primary Lines Only

NEL

Set 1: Jun 1st/6th

0.00

0.00

Set 2: Jun 13th/17th

0.00

0.00

Set 3: Jul 5th/12th

0.00

0.00

Set 4: Jul 18th /27th

0.00

0.00

Set 5: Aug 5th/9th

0.00

0.00

Set 6: Aug 17th/23rd

0.00

0.00

NWL

Set 1: Jun 1st/6th

0.00

0.00

Set 2: Jun 13th/17th

0.00

0.00

Set 3: Jul 5th/12th

4.60

9.20

Set 4: Jul 18th /27th

0.00

0.00

Set 5: Aug 5th/9th

4.24

28.28

Set 6: Aug 17th/23rd

1.48

7.40

Note: Dolphin Encounter Rates are deduced from the Two Sets of Surveys (Two Surveys in Each Set) in the reporting quarter in Northeast (NEL) and Northwest Lantau (NWL)


Table 2.8        Quarterly Average 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)

June 2016 -  August 2016

September -  November 2011

June 2016 -  August 2016

September -  November 2011

Northeast Lantau

0.0

6.00 ± 5.05

0.0

22.19 ± 26.81

Northwest Lantau

1.72 ± 2.17

9.85 ± 5.85

7.48 ± 10.98

44.66 ± 29.85

Note: Encounter rates deduced from the baseline monitoring period have been recalculated based only on survey effort and on-effort sighting data made along the primary transect lines under favourable conditions.

Table d 4.6

nd limit levels of dolphin impact monitoring are shown in Table  

Group size of Chinese White Dolphins ranged from 1 - 11 individuals per group in North Lantau region during June to August 2016.  The average dolphin group sizes from these three months were compared with the ones deduced from the baseline period in September to November 2011, as shown in Table 2.9.

 

Table 2.9        Average Dolphin Group Size

 

Average Dolphin Group Size

June – August 2016

September – November 2011

Overall

3.40 ± 3.34 (n = 10)

3.72 ± 3.13 (n = 66)

Northeast Lantau

1.00 (n = 1)

3.18 ± 2.16 (n = 17)

Northwest Lantau

3.67 ± 3.43 (n = 9)

3.92 ± 3.40 (n = 49)

Whilst one limit level exceedance was observed for the quarterly dolphin monitoring data between June and August 2016, no unacceptable impact from the construction activities of this Contract was recorded from the general observations.

Although the dolphins infrequently occurred along the alignment of TM-CLKL Northern Connection Sub-Sea Tunnel Section in the past and during the baseline monitoring period, it is apparent that dolphin usage has been significantly reduced in NEL.

It is critical to monitor the dolphin usage in North Lantau region in the upcoming quarters to determine whether the dolphins are continuously affected by the various construction activities in relation to the HZMB-related works, and whether suitable mitigation measure can be applied to revert the situation.

2.3.8                              Implementation of Marine Mammal Exclusion Zone

There was no dredging, reclamation or marine sheet piling works in open waters during this reporting period.  Thus, Passive Acoustic Monitoring (PAM) and the day-time monitoring of Dolphin Exclusion Zone (DEZ) by dolphin observers were not in effect during the reporting period.

2.4                                    EM&A Site Inspection

Site inspections were carried out on a weekly basis to monitor the implementation of proper environmental pollution control and mitigation measures under the Contract.  Fourteen (14) site inspections were carried out in the reporting quarter on 1, 8, 15, 22 and 29 June 2016; 6, 13, 20 and 27 July 2016;3, 10, 17, 24 and 31 August 2016.

Key observations during the site inspections in this reporting period are summarized in Table 2.10.

Table 2.10      Specific Observations and Recommendations during the Weekly Site Inspection in this Reporting Period

Inspection Date

Environmental Observations

Recommendations/ Remarks

1 June 2016

Works Area – Portion N-C

Ÿ   Stagnant water should be removed from the tank.

Works Area – Portion N-C

Ÿ  The Contractor was reminded to remove the stagnant water from the tank.

8 June 2016

Works Area –TBM tunnel

Ÿ   Drip tray should be provided to the chemical containers.

Works Area - Portion S-A

Ÿ   Drip tray should be provided to the oil drums.

Works Area – Portion S-B

Ÿ   Oil drums should be removed from the machine.

Works Area –TBM tunnel

Ÿ  The Contractor was reminded to provide drip tray to the chemical containers.

Works Area - Portion S-A

Ÿ  The Contractor was reminded to provide drip tray to the oil drums.

Works Area – Portion S-B

Ÿ  The Contractor was reminded to remove the oil drums from the machine.

15 June 2016

Works Area – Portion N-C

Ÿ  Drip tray should be provided to the chemical drum.

Works Area – Portion S-A

Ÿ  Chemical labels should be provided to the oil drums.

Works Area – Portion N-C

Ÿ  The Contractor was reminded to provide drip tray to the chemical drum.

Works Area – Portion S-A

Ÿ  The Contractor was reminded to provide chemical labels to the oil drums.

22 June 2016

 Works Area – Portion S-B

Ÿ  Water spraying should be applied more frequently during dry condition.

 Works Area – Portion S-B

Ÿ  The Contractor was reminded to apply water spraying more frequently during dry condition.

29 June 2016

Works Area – Portion N-B

Ÿ  Water spraying should be applied more frequently during dry condition.

Works Area – Portion S-B

Ÿ  Wastewater should be directed to the wastewater treatment facility properly.

Ÿ  Chemical labels should be provided to the acid containers.

Works Area – Portion N-B

Ÿ  The Contractor was reminded to apply water spraying more frequently during dry condition.

Works Area – Portion S-B

Ÿ  The Contractor was reminded to properly direct the wastewater to the wastewater treatment facility.

Ÿ  The Contractor was reminded to provide chemical labels to the acid containers.

6 July 2016

Works Area – Portion N-C

Ÿ  Oil drum should be removed after used.

Works Area – TBM tunnel

Ÿ  Oil drum should be removed after used.

Works Area – Portion N-C

Ÿ  The Contractor was reminded to remove the oil drum after used.

Works Area – TBM tunnel

Ÿ  The Contractor was reminded to remove the oil drum after used.

13 July 2016

Works Area – Portion N-C

Ÿ  Rubbish and empty chemical drums should be removed.

Works Area – Portion S-B

Ÿ  Drip tray and chemical labels should be provided to the chemical containers.

Works Area – Portion N-C

Ÿ  The Contractor was reminded to remove the rubbish and empty chemical drums.

Works Area – Portion S-B

Ÿ  The Contractor was reminded to provide drip tray and chemical labels to the chemical containers.

20 July 2016

Works Area – Portion S-B

Ÿ  Stagnant water in the drip tray should be removed.

Works Area – Portion N-C

Ÿ  The Contractor was reminded to remove the stagnant water in the drip tray.

27 July 2016

Works Area – Portion N-A

Ÿ  Accumulated waste in the skip should be removed.

Works Area – Portion S-C

Ÿ  Drip tray and labels should be provided to the chemicals.

Works Area – Portion N-A

Ÿ  The Contractor was reminded to remove the accumulated waste in the skip.

Works Area – Portion S-C

Ÿ  The Contractor was reminded to provide drip tray and labels to the chemicals.

3 August 2016

Works Area – TBM tunnel

Ÿ  Drip tray and labels should be provided to the chemicals.

Works Area – Portion S-C

Ÿ  Accumulated waste in the skip should be removed.

Works Area – TBM tunnel

Ÿ  The Contractor was reminded to provide drip tray and labels to the chemicals.

Works Area – Portion S-C

Ÿ  The Contractor was reminded to remove the accumulated waste in the skip.

10 August 2016

Works Area – TBM tunnel

Ÿ  Drip tray and labels should be provided to the chemicals.

 Works Area – TBM tunnel

Ÿ  The Contractor was reminded to provide drip tray and labels to the chemicals.

17 August 2016

Works Area – Portion N-C

Ÿ  Drip tray should be provided to the chemicals.

Works Area – Portion N-B

Ÿ  Rubbish should be removed in order to maintain better housekeeping.

Ÿ  Surface runoff should be controlled to prevent direct discharge to surface or marine waters.

Works Area – Portion N-A

Ÿ  Drip tray and labels should be provided to the chemicals.

Works Area – Portion S-B

Ÿ  Stagnant water should be removed to maintain better housekeeping.

Works Area – Portion N-C

Ÿ  The Contractor was reminded to provide drip tray to the chemicals.

Works Area – Portion N-B

Ÿ  The Contractor was reminded to remove the rubbish in order to maintain better housekeeping.

Ÿ  The Contractor was reminded to control the surface runoff to prevent direct discharge to surface or marine waters.

Works Area – Portion N-A

Ÿ  The Contractor was reminded to provide drip tray and labels to the chemicals.

Works Area – Portion S-B

Ÿ  The Contractor was reminded to remove stagnant water to maintain better housekeeping.

24 August 2016

Works Area – Portion N-B

Ÿ  Water spraying should be applied more frequently during dry condition.

Ÿ  Sand and mud in the surface channel should be removed.

Works Area – Portion S-B

Ÿ  Drip tray should be provided to the chemicals.

Works Area – Portion N-B

Ÿ  The Contractor was reminded to apply water spraying more frequently during dry condition.

Ÿ  The Contractor was reminded to remove the sand and mud in the surface channel.

Works Area – Portion S-B

Ÿ  The Contractor was reminded to provide drip tray to the chemicals.

31 August 2016

Works Area – Portion N-C

Ÿ  Accumulated wastes beside the waste skips should be removed.

Works Area - TBM tunnel

Ÿ  Cement bags should be covered with tarpaulin sheet.

Works Area - Portion S-B

Ÿ  Stagnant water in the drip tray should be removed.

 

Works Area – Portion N-C

Ÿ  The Contractor was reminded to remove the accumulated wastes beside the waste skips.

Works Area - TBM tunnel

Ÿ  The Contractor was reminded to cover the cement bags with tarpaulin sheet.

Works Area - Portion S-B

Ÿ  The Contractor was reminded to remove the stagnant water in the drip tray.

The Contractor has rectified all of the observations as identified during environmental site inspections in the reporting quarter.

2.5                                    Waste Management Status

The Contractor had submitted application form for registration as chemical waste producer under the Contract.  Sufficient numbers of receptacles were available for general refuse collection and sorting.

Wastes generated during this reporting period include mainly construction wastes (inert and non-inert) and recyclable materials. Reference has been made to the waste flow table prepared by the Contractor (Appendix J).  The quantities of different types of wastes are summarized in Table 2.11.      

Table 2.11      Quantities of Different Waste Generated in the Reporting Period

Month/Year

Inert Construction Waste (a) (tonnes)

Imported Fill (tonnes)

Inert Construction Waste Re-used

(tonnes)

Non-inert Construction Waste (b) (tonnes)

Recyclable Materials (c)  (kg)

Chemical Wastes (kg)

Marine Sediment (m3)

Category L

Category M

June 2016

5,597

0

0

214

200

0

0

0

July 2016

10,063

0

0

292

200

0

0

0

August 2016

31,621

0

0

323

0

0

0

0

Total

47,281

0

0

829

400

0

0

0

Notes:

(a)   Inert construction wastes include hard rock and large broken concrete, and materials disposed as public fill.

(b)   Non-inert construction wastes include general refuse disposed at landfill.

(c)    Recyclable materials include metals, paper, cardboard, plastics, timber and others.

The Contractor was advised to properly maintain on site C&D materials and waste collection, sorting and recording system, dispose of C&D materials and wastes at designated ground and maximize reuse/ recycle of C&D materials and wastes.  The Contractor was also reminded to properly maintain the site tidiness and dispose of the wastes accumulated on site regularly and properly.

For chemical waste containers, the Contractor was reminded to treat properly and store temporarily in designated chemical waste storage area on site in accordance with the Code of Practice on the Packaging, Labelling and Storage of Chemical Wastes.

2.6                                    Environmental Licenses and Permits

The status of environmental licensing and permit is summarized in Table 2.12 below.  


Table 2.12      Summary of Environmental Licensing and Permit Status

License/ Permit

License or Permit No.

Date of Issue

Date of Expiry

License/ Permit Holder

Remarks

Environmental Permit

EP-354/2009/D

13 March 2015

Throughout the Contract

HyD

Application for VEP on 3 March 2015 to supersede EP-354/2009/C

Construction Dust Notification

 

Construction Dust Notification

363510

 

403620

19 August 2013

 

10 June 2016

Throughout the Contract

Throughout the Contract

DBJV

 

DBJV

 

Northern Landfall

 

Southern Landfall

 

Chemical Waste Registration

 

Chemical Waste Registration

5213-422-D2516-01

 

5213-951-D2591-01

10 September 2013

 

25 May 2016

Throughout the Contract

Throughout the Contract

DBJV

 

DBJV

 

Northern Landfall

 

Southern Landfall

Construction Waste Disposal Account

7018108

28 August 2013

Throughout the Contract

DBJV

Waste disposal in Contract HY/2012/08

Waste Water Discharge License

WT00017707-2013

18 November 2013

30 November 2018

DBJV

For works in site WA18

Waste Water Discharge License

 

Marine Dumping Permit

Marine Dumping Permit

WT00019248-2014

 

EP/MD/17-036

EP/MD/17-070

5 June 2014

 

7 June 2016

7 August 2016

30 June 2019

 

6 July 2016

6 September 2016

DBJV

 

DBJV

DBJV

For site Portion N6 and Reclamation Area E

Southern Landfall

Southern Landfall

Construction Noise Permit

Construction Noise Permit

GW-RW0180-16

GW-RW0450-16

9 April 2016

27 July 2016

30 September 2016

19 January 2017

DBJV

DBJV

For Urmston Road in front of Pillar Point

For Urmston Road in front of Pillar Point

Construction Noise Permit

GW-RW0334-16

14 June 2016

13 December 2016

DBJV

For site WA23A+B

Construction Noise Permit

GW-RW0143-16

29 March 2016

28 September 2016

DBJV

For Portion N6

Construction Noise Permit

GW-RS0324-16

18 April 2016

17 October 2016

DBJV

For excavation works at Southern Landfall

Construction Noise Permit

GW-RS0860-16

25 August 2016

24 February 2017

DBJV

For Southern Landfall

Notes:

 

 

 

 

 

HyD = Highways Department

DBJV = Dragages – Bouygues Joint Venture

VEP = Variation of Environmental Permit


2.7                                    Implementation Status of Environmental Mitigation Measures

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

A summary of the Implementation Schedule of Environmental Mitigation Measures (EMIS) is presented in Appendix C.  The necessary mitigation measures relevant to this Contract were implemented properly.

2.8                                    Summary of Exceedances of the Environmental Quality Performance Limit

For air quality impact monitoring, a total of thirty-one monitoring events were undertaken in which no Action Level or Limit Level exceedances for 1-hr TSP; no Action Level exceedances or Limit Level exceedances for 24-hr TSP were recorded in this reporting quarter (Table 2.13).

Table 2.13      Summary of Exceedances for Air Quality Impact Monitoring in this Reporting Quarter

Station

Exceedance Level

Date of Exceedances

Number of Exceedances

1-hr TSP

24-hr TSP

1-hr TSP

24-hr TSP

AQMS1

Action Level

-

-

0

0

Limit Level

-

-

0

0

ASR1

Action Level

-

-

0

0

Limit Level

-

-

0

0

ASR5

Action Level

-

-

0

0

Limit Level

-

-

0

0

ASR6

Action Level

-

-

0

0

Limit Level

-

-

0

0

ASR10

Action Level

-

-

0

0

Limit Level

-

-

0

0

Total number of Action level Exceedances:

0

0

Total number of Limit level Exceedances:

0

0


One (1) Limit Level exceedance was observed for the quarterly dolphin monitoring data between June and August 2016, whilst no unacceptable impact from the construction activities of the TM-CLKL Northern Connection Sub-sea Tunnel Section on Chinese White Dolphins was noticeable from general observations.

Cumulative statistics are provided in Appendix I.

2.9                                    Summary of Complaints, Notification of Summons and Successful Prosecutions

The Environmental Complaint Handling Procedure is provided in Figure 2.3.

Two environmental complaints regarding muddy water discharge near the Pier at 33 Ho Yeung Street, Tuen Mun at Northern Landfall and marine litter disposal near Tuen Mun Ferry Pier were received from EPD on 6 July 2016 and from ENPO on 16 July 2016 respectively.  Upon investigation, the complaints were considered not related to this Project.

No notification of summons or successful prosecution recorded in the reporting period.

Statistics on complaints, notifications of summons and successful prosecutions are summarized in Appendix I.

 

 

3                                          Future Key Issues

3.1                                    Construction Activities for the Coming Quarter

As informed by the Contractor, the major works for the Project in the coming quarter are summarized in Table 3.1.

Table 3.1        Construction Works to Be Undertaken in the Coming Quarter

Works to be undertaken

Land-based Works

·         Box Culvert Extension at Works Area – Portion N-A;

·         Preparation of Phase 2 Reclamation – Portion N-A;

·         Shaft Structure and Backfilling – Portion N-C;

·         Construction of Cross Passage Tympanum – TBM tunnel;

·         Cross Passage Lining Installation – TBM Tunnel;

·         Corbel Construction – TBM Tunnel;

·         Excavation of Sub-sea Tunnel – TBM tunnel;

·         Sub-sea Tunnel Gallery Installation – TBM tunnel;

·         Deep Band Drain Installation – Portion S-A;

·         Dewatering Deep well Installation – Portion S-A; and

·         Jet Grouting, CSM Ground Treatment and Diaphragm Wall Construction – Portion S-A.

 

3.2                                    Key Issues for the Coming Quarter

As informed by the Contractor, Phase I Reclamation works for the Northern Landfall was substantially completed in December 2014, a proposal letter was sent to EPD on 21 May 2015 to seek approval for the temporary suspension of Water Quality Monitoring.  Subsequently, a letter from EPD on 5 June 2015 stated that they have no strong objection to the temporary suspension of the water quality monitoring.  Water Quality Monitoring was suspended from 6 June 2015 effectively and will resume when Phase II Reclamation commences in the fourth quarter of 2016 tentatively.

Potential environmental impacts arising from the above upcoming construction activities in the coming quarterly period are expected to be mainly associated with dust, marine ecology and waste management issues.

3.3                                    Monitoring Schedule for the Coming Quarter

Impact monitoring for air quality and marine ecology (include dolphin monitoring) are scheduled to continue for the next reporting period.

The monitoring programme has been reviewed and was considered as adequate to cater for the nature of works in progress.  Change to the monitoring programme was thus not considered to be necessary at this stage.  The monitoring programme will be evaluated as appropriate in the next reporting period. 

 

4                                          Conclusions

This Eleventh Quarterly EM&A Report presents the findings of the EM&A activities undertaken during the period from 1 June 2016 to 31 August 2016, in accordance with the Updated EM&A Manual and the requirements of EP-354/2009/D.   

Air quality (including 1-hour TSP and 24-hour TSP) and dolphin monitoring were carried out in the reporting period.  No Action or Limit Level exceedances for 1-hr TSP were recorded.  No Action or Limit Level exceedances for 24-hr TSP were record. 

A total of 10 groups of 34 Chinese White Dolphins sightings were recorded during the six sets of surveys in this reporting quarter.  Seven of the ten dolphin sightings were made during on-effort search, and all seven on-effort dolphin sightings were made on primary lines.  Whilst one limit level exceedance was recorded for the quarterly dolphin monitoring data between June and August 2016, no unacceptable impact from the construction activities of the TM-CLKL Northern Connection Sub-sea Tunnel Section on Chinese White Dolphins was noticeable from general observations.  Although the dolphins infrequently occurred along the alignment of TM-CLKL Northern Connection Sub-Sea Tunnel Section in the past and during the baseline monitoring period, it is apparent that dolphin usage has been significantly reduced in NEL.  It is critical to monitor the dolphin usage in North Lantau region in the upcoming quarters, to determine whether the dolphins are continuously affected by the various construction activities in relation to the construction works of the Contract, and whether suitable mitigation measure can be applied to improve the situation.

Fourteen weekly environmental site inspections were carried out in the reporting period.  Recommendations on remedial actions provided for the deficiencies identified during the site audits were properly implemented by the Contractor.  No non-compliance event was recorded during the reporting period.

Two environmental complaints regarding muddy water discharge near the Pier at 33 Ho Yeung Street, Tuen Mun at Northern Landfall and marine litter disposal near Tuen Mun Ferry Pier were received from EPD on 6 July 2016 and from ENPO on 16 July 2016 respectively.  Upon investigation, the complaints were considered not related to this Project.

No notification of summons or successful prosecution recorded in the reporting period.The monitoring programme has been reviewed and was considered as adequate to cater for the nature of works in progress.  Change to the monitoring programme was thus not recommended at this stage.  The monitoring programme will be evaluated as appropriate in the next reporting period.  The ET will keep track on the construction works to confirm compliance of environmental requirements and the proper implementation of all necessary mitigation measures. 



 

 



([1])                ERM (2013) Enhanced TSP Monitoring Plan.  Submitted on 28 October 2013 and subsequently approved by EPD on 1 November 2013.