Verification by IEC

 

Certification by ET

 


Contract No. HY/2013/01

Hong Kong-Zhuhai-Macao Bridge

Hong Kong Boundary Crossing Facilities – Passenger Clearance Building

 

 

 

 

Monthly EM&A Report No. 41

(Covering the Period from 1 February 2018 to 28 February 2018)

 

16 March 2018

Revision 3

 

 

 

 

 

 

 

Main Contractor                                                                                                                  Environmental Team 

 

Contents

Executive Summary

1....... Introduction. 1

1.1                           Basic Project Information. 1

1.2                           Project Organisation. 2

1.3                           Construction Programme. 3

1.4                           Construction Works Undertaken During the Reporting Period. 3

2...... Air Quality Monitoring. 4

2.1                           Monitoring Requirements. 4

2.2                           Monitoring Equipment 4

2.3                           Monitoring Locations. 5

2.4                           Monitoring Parameters, Frequency and Duration. 5

2.5                           Monitoring Methodology. 5

2.6                           Monitoring Schedule for the Reporting Month. 7

2.7                           Monitoring Results. 7

3...... Noise Monitoring. 9

3.1                           Monitoring Requirements. 9

3.2                           Monitoring Equipment 9

3.3                           Monitoring Locations. 9

3.4                           Monitoring Parameters, Frequency and Duration. 10

3.5                           Monitoring Methodology. 10

3.6                           Monitoring Schedule for the Reporting Month. 11

3.7                           Monitoring Results. 11

4...... Water Quality Monitoring. 12

4.1                           Monitoring Requirements. 12

4.2                           Monitoring Equipment 12

4.3                           Monitoring Parameters, Frequency and Duration. 13

4.4                           Monitoring Location. 13

4.5                           Monitoring Methodology. 14

4.6                           Monitoring Result 16

5...... Dolphins Monitoring. 18

5.1                           Monitoring Requirement 18

5.2                           Monitoring Methodology and Location. 18

5.3                           Monitoring Schedule for the Reporting Month. 21

5.4                           Monitoring Result 21

6...... Environmental Site Inspection and Audit 24

6.1                           Site Inspection. 24

6.2                           Advice on the Solid and Liquid Waste Management Status. 25

6.3                           Environmental Licenses and Permits. 25

6.4                           Implementation Status of Environmental Mitigation Measures. 25

6.5                           Summary of Exceedance of the Environmental Quality Performance Limit 25

6.6                           Summary of Complaints, Notification of Summons and Successful Prosecution. 26

7...... Future Key Issues. 27

7.1                           Construction Programme for the Coming Months. 27

7.2                           Environmental Site Inspection and Monitoring Schedule for the Coming Month. 27

8...... Conclusions. 28

8.1                           Conclusions. 28


Figures

Figure 2.1            Location of Air Quality Monitoring Stations and Wind Station

Figure 3.1            Location of Noise Monitoring Stations

Figure 4.1            Location of Water Monitoring Stations

 

Appendices

Appendix A         Location of Works Areas

Appendix B         Project Organization for Environmental Works

Appendix C         Construction Programme

Appendix D         Monitoring Data and Graphical Plot (Air Quality, Noise and Water Quality)

Appendix E         Dolphin Monitoring Result

Appendix F         Wind Data

Appendix G         Calibration Certificates

Appendix H         Event and Action Plan

Appendix I           Waste Flow Table

Appendix J          Environmental Licenses and Permits

Appendix K         Implementation Schedule for Environmental Mitigation Measures (EMIS)

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

Appendix M        Environmental Site Inspection and Monitoring Schedule

Appendix N    Investigation Report

 

 

Executive Summary

This Monthly Environmental Monitoring and Audit (EM&A) Report is prepared for Contract No. HY/2013/01 Hong Kong-Zhuhai-Macao Bridge Hong Kong Boundary Crossing Facilities (HZMB HKBCF) – Passenger Clearance Building (hereafter referred to as “the Contract”) (includes the construction works of Contract No. HY/2013/06 Hong Kong-Zhuhai-Macao Bridge Hong Kong Boundary Crossing Facilities – Automatic Vehicle Clearance Support System within Contract No. HY/2013/01 works area) for the Highways Department of Hong Kong Special Administrative Region (HKSAR). The Contract was awarded to Leighton – Chun Wo Joint Venture (construction works of Contract No. HY/2013/06 was awarded to ATAL Technologies Limited within Contract No. HY/2013/01 works area) (hereafter referred to as “the Contractor”) and Atkins China Limited was appointed as the Environmental Team (ET) by the Contractor.

The Contract is part of HZMB HKBCF Project which is a “Designated Project”, under Schedule 2 of the Environmental Impact Assessment Ordinance (EIAO) (Cap 499) and Environmental Impact Assessment (EIA) Report (Register No. AEIAR-145/2009) was prepared for the Project. The current Environmental Permit (EP) No. EP-353/2009/K for HKBCF was issued on 11 April 2016. These documents are available through the EIA Ordinance Register. Site preparation works of the Contract started on 26 September 2014 and the construction works of the Contract commenced on 6 October 2014. The construction works of the Contract No. HY/2013/06 within Contract No. HY/2013/01 works area commenced on 20 February 2018.

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

This is the forty-first monthly EM&A Report for the Contract which summarizes findings of the EM&A works during the reporting period from 1 to 28 February 2018. (includes the construction works of Contract No. HY/2013/06 within Contract No. HY/2013/01 works area)

Environmental Monitoring and Audit Progress

The monthly EM&A programme was undertaken in accordance with the Updated EM&A Manual for HKBCF (Version 1.0). The air quality, noise, water quality and dolphin monitoring works under Contract No. HY/2010/02 Hong Kong-Zhuhai-Macao Bridge HKBCF – Reclamation Works were suspended from 1 September 2017. The ET of Contract No. HY/2013/01 is required and continues the same implementation of environmental monitoring commencing on 1 September 2017. It should be noted that the air quality monitoring station (AMS6) is covered by Contract No. HY/2011/03 Hong Kong-Zhuhai-Macao Bridge Hong Kong Link Road – Section between Scenic Hill and HKBCF.

A summary of the monitoring activities during the reporting period are listed below:

1-hour TSP Monitoring:     AMS2 -     5, 9, 15, 21 and 27 February 2018

                                        AMS3B -   5, 9, 15, 21 and 27 February 2018

                                        AMS7B -   6, 12, 14, 20 and 23 February 2018

 

24-hour TSP Monitoring:   AMS2 -     2, 8, 14,20 and 27 February 2018

                                        AMS3B -   2, 8,14, 20 and 26 February 2018

                                        AMS7B -   6, 9, 15, 21 and 27 February 2018

Noise Monitoring:             NMS2 -     1, 7, 13, 20 and 26 February 2018

                                        NMS3B -   5, 15, 21 and 27 February 2018

Water Quality Monitoring:                  2, 5, 7, 9, 12, 14, 17, 19, 21, 23, 26 and 28 February 2018

Chinese White Dolphin Monitoring:    1, 6, 13 and 26 February 2018

Environmental Site Inspection:          7, 14, 21, and 28 February 2018 for Contract No. HY/2013/01;

21 and 28 February 2018 for Contract No. HY/2013/06 within   Contract No. HY/2013/01 works area

 

 

Breaches of Action and Limit Levels

A summary of environmental exceedances for the reporting period are listed below:

Environmental Monitoring

Parameters

Action Level (AL)

Limit Level (LL)

Air Quality

1-hr TSP

-

-

 

 

 

24-hr TSP

-

-

 

 

Noise

Leq (30 min)

-

-

Water Quality

Suspended solids level (SS)

2

-

Turbidity level

-

-

Dissolved oxygen level (DO)

-

-

Dolphin Monitoring

Quarterly Analysis (December 2017 to February 2018)

-

1

 

Complaint Log

There was no complaint received in relation to the environmental impact during the reporting period.

Notifications of Summons and Successful Prosecutions

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

Reporting Change

A proposal of re-location of Air Quality Monitoring (AQM) station, AMS7, for HZMB HKBCF Project was justified by the ET Leader for Contract No. HY/2013/01 on 22 January 2018; verified by the IEC on 24 January 2018 and submitted to EPD on 30 January 2018, and AQM station has been carrying out at the alternative AQM station, AMS7B, with EPD’s consent since 6 February 2018.

According to information from Contractor of Contract No. HY/2013/01, the construction works of the Contract No. HY/2013/06 within Contract No. HY/2013/01 works area has been commenced on 20 February 2018.

 

 

 

Future Key Issues

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

For Contract No. HY/2013/01

Land Based work

·         Falsework stripping

·         Pipework and ductwork installation

·         Wet trade works

·         Dry trade works

·         Mechanical, Electrical and Plumbing (MEP) High Level Containment

·         Removal of temporary works

·         Hanging scaffolding removal

·         Southern toilet

·         Miscellaneous steelwork

·         Escalator Installation

·         Glazed lift Installation

·         Road and Kerbing

·         Water features and planters

·         Kiosk/Booth installation

·         Testing and commissioning works

 

No marine based construction work to be undertaken in the upcoming month.

 

 For Contract No. HY/2013/06 within Contractor No. HY/2013/01 works area

·         Conduit installation and Cabling at ELV & Sever Room, and Zone E PCB

 

1        Introduction

1.1.1          This Monthly Environmental Monitoring and Audit (EM&A) Report is prepared for Contract No. HY/2013/01 Hong Kong-Zhuhai-Macao Bridge Hong Kong Boundary Crossing Facilities – Passenger Clearance Building (hereafter referred to as “the Contract”) (includes the construction works of Contract No. HY/2013/06 Hong Kong-Zhuhai-Macao Bridge Hong Kong Boundary Crossing Facilities – Automatic Vehicle Clearance Support System within Contract No. HY/2013/01 works area) for the Highways Department of Hong Kong Special Administrative Region. The Contract was awarded to Leighton – Chun Wo Joint Venture (construction works of Contract No. HY/2013/06 was awarded to ATAL Technologies Limited within Contract No. HY/2013/01 works area) (hereafter referred to as “the Contractor”) and Atkins China Limited was appointed as the Environmental Team (ET) by the Contractor.

1.1.2          The Contract is part of Hong Kong – Zhuhai – Macao Bridge Hong Kong Boundary Crossing Facilities (HKBCF) which is a “Designated Project”, under Schedule 2 of the Environmental Impact Assessment Ordinance (EIAO) (Cap 499). An Environmental Impact Assessment (EIA) Report (Register No. AEIAR-145/2009) was prepared for the Project. The current Environmental Permit (EP) No. EP-353/2009/K for HKBCF was issued on 11 April 2016. These documents are available through the EIA Ordinance Register. Site preparation work of the Contract started on 26 September 2014 and the construction works of the Contract commenced on 6 October 2014. The construction works of the Contract No. HY/2013/06 within Contract No. HY/2013/01 works area commenced on 20 February 2018.The works areas of the Contract are shown in Appendix A.

1.1.3          The proposed works under this Contract comprise the following:

For Contract No. HY/2013/01

·            Construction of Passenger Clearance Building (PCB) including architectural and builders works, structural steel roof and reinforced concrete frames, basement, piled foundations, aluminium roof, curtain wall facades, building services and electrical and mechanical works;

·            Installation of district cooling system including seawater cooling intake pumping station, seawater intake and discharge water pipelines work; Installation of Chilled water cooling pipelines system, heat exchanger and chilled pumping system;

·            Construction of transport and associated facilities connecting to the PCB entailing the Emergency Vehicular Access, an at-grade mainland side drop-off area, an Hong Kong side elevated drop-off deck and 8 numbers of footbridge links;

·            Construction of a public toilet, 6 numbers of C&ED observation booths, a generator set building and a refuse storage & material recovery chamber;

·            Construction of a section of 70m common utilities enclosure and staff subway and civil provisions for associated electrical and mechanical works;

·            Construction of drainage, sewerage, fresh water & flushing water supply and utilities & service works;

·            Construction of civil provisions, including draw pits & ducting for Traffic Control and Surveillance System (TCSS) and Extra Low Voltage System (ELV);

·            Construction of box culvert A;

·            Construction of 2 numbers of vehicular bridge abutments at mainland side pickup area earthmound;

·            Construction of geotechnical works including top up the existing earth mound from +11.5mPD to the finished level as stated in the Contract, reinforced earth slope and fill slopes and special backdrop manhole at mainland side pickup area earthmound;

·            Landscape hardworks and softworks; and

·            Other works which are shown on the Drawings or specified in the Specification or which may be ordered in accordance with the Contract.

      For Contract No. HY/2013/06 within Contract No. HY/2013/01

·       The Automatic Vehicle Clearance Support System amid to increasing traffic flow for Hong Kong-Zhuhai-Macao Bridge Hong Kong Boundary Crossing Facilities;

·       Responsible for designs and develops a set of tailor-made computer monitoring and control systems to for daily security operation; and

·       The Clearance Workstations at 72 vehicle clearance kiosks, Customs and Excise’s inbound and outbound traffic control centers as well as a Vehicle Tracking System.

1.1.4      This is the forty-first monthly EM&A Report for the Contract No. HY/2013/01 which summarizes the audit findings of the EM&A programme during the reporting period from 1 to 28 February 2018 (included the construction works of Contract No. HY/2013/06 within Contract No. HY/2013/01 works area).

1.2          Project Organisation

1.2.1      The project organization structure and lines of communication with respect to the on-site environmental management structure is shown in Appendix B. The key personnel contact names and numbers are summarized in Table 1.1.

Table 1.1         Contact Information of Key Personnel

Party

Position

Name

Telephone

Fax

For Contract No. HY/2013/01

Engineer or Engineer’s Representative
(AECOM Asia Co. Ltd.)

Chief Resident Engineer

Malcolm Sage

3958 7330

3468 2076

Environmental Project Office / Independent Environmental Checker (Ramboll Hong Kong Limited)

Environmental Project Office Leader

Y. H. Hui

3465 2888

3465 2899

Independent Environmental Checker

Raymond Dai

3465 2888

3465 2899

Contractor
(Leighton – Chun Wo Joint Venture)

Project Manager

Owen Leung

9232 5750

3621 0180

Environmental Officer

Stephen Tsang

9686 0787

3621 0180

Environmental Team
(Atkins China Limited)

Environmental Team Leader

Keith Chau

2972 1721

2890 6343

24 hours complaint hotline

---

---

3958 7300

---

For Contract No. HY/2013/06 within Contract No. HY/2013/01 works area

Engineer or Engineer’s Representative
(AECOM Asia Co. Ltd.)

Chief Registered Architect

Malcolm Sage

3958 7330

3468 2076

Environmental Project Office / Independent Environmental Checker (Ramboll Hong Kong Limited)

Environmental Project Office Leader

Y. H. Hui

3465 2888

3465 2899

Independent Environmental Checker

Raymond Dai

3465 2888

3465 2899

Contractor
(ATAL Technologies Limited)

Site Agent

Mr. Eric Yim

2565 3355

3162 5217

Environmental Officer

Mr. W. Li

2565 3137

3162 5217

Environmental Team
(Atkins China Limited)

Environmental Team Leader

Keith Chau

2972 1721

2890 6343

24 hours complaint hotline

---

---

6509 0375

---

.

1.3          Construction Programme

1.3.1      A copy of the Contractor’s construction programme is provided in Appendix C.

1.4          Construction Works Undertaken During the Reporting Period

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

For Contract No. HY/2013/01

Land Based work

·            Backfilling

·            Falsework stripping

·            Pipework and ductwork installation

·            Wet trade works

·            Dry trade works

·            MEP High Level Containment

·            Removal of temporary works

·            Window wall glazing

·            Hanging scaffolding removal  

·            Southern toilet

·            MISC steelwork

·            Escalator installation

·            Glazed lift installation

·            Road and Kerbing

·            Testing and commissioning works

·            Water features and planters

·            EVA Roadwork

·            Kiosk/Booth installation

·            Reinstatement of sewall

 

No marine based construction work was undertaken in the reporting month.

 

For Contract No. HY/2013/06 within Contract No. HY/2013/01 works area

·            Conduit installation and cabling at ELV & Server Room, Zone E PCB

 

 

 

2        Air Quality Monitoring

2.1.1      In accordance with the Contract Specific EM&A Manual, baseline 1-hour and 24-hour Total Suspended Particulates (TSP) levels at 4 air quality monitoring stations were established. Impact 1-hour TSP monitoring was conducted for at least three times every 6 days, while impact 24-hour TSP monitoring was carried out for at least once every 6 days. The Action and Limit Level for the 1-hour and 24-hour TSP are provided in Table 2.1 and 2.2 respectively.

Table 2.1         Action and Limit Levels for 1-hour TSP

Monitoring Station

Action Level, µg/m3

Limit Level, µg/m3

AMS2 - Tung Chung Development Pier

374

500

AMS3B -
Site Boundary of Site Office Area at Work Area WA2

368

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

360

AMS7B – 3RS Site Office

370

 

Table 2.2         Action and Limit Levels for 24-hour TSP

Monitoring Station

Action Level, µg/m3

Limit Level, µg/m3

AMS2 - Tung Chung Development Pier

176

260

AMS3B -
Site Boundary of Site Office Area at Work Area WA2

167

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

173

AMS7B – 3RS Site Office

183

2.2          Monitoring Equipment

2.2.1      24-hour TSP air quality monitoring was performed using High Volume Sampler (HVS) located at each designated monitoring station. The HVS meets all the requirements of the Contract Specific EM&A Manual. Portable direct reading dust meters were used to carry out the 1-hour TSP monitoring. Brand and model of the equipment is given in Table 2.3.

Table 2.3         Air Quality Monitoring Equipment

Equipment

Brand and Model

Portable direct reading dust meter
(1-hour TSP)

Sibata Digital Dust Monitor (Model No. LD-3B)

High Volume Sampler
(24-hour TSP)

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

 

2.3.1      Monitoring locations AMS2 and AMS7 were set up at the purposed locations in accordance with Contract Specific EM&A Manual. For monitoring location AMS3 (Ho Yu College), as proposed in the Contract Specific EM&A Manual, approval for carrying out impact monitoring could not be obtained from the principal of the school. Permission on setting up and carrying out impact monitoring works at nearby sensitive receivers, like Caribbean Coast and Coastal Skyline, was also sought. However, approvals for carrying out impact monitoring works within their premises were not obtained. Impact air quality monitoring was conducted at site boundary of the site office area in Works Area WA2 (AMS3B) respectively.Same baseline and Action Level for air quality, as derived from the baseline monitoring data recorded at Ho Yu College, was adopted for this alternative air quality location.

2.3.2      Table 2.4 describes the details of the monitoring stations and Figure 2.1 shows the locations of the air quality monitoring stations.

Table 2.4         Construction Dust Monitoring Locations

ID

Location Description

AMS2

Tung Chung Development Pier

AMS3B

Site Boundary of Site Office Area at Work Area WA2

AMS6

Dragonair/CNAC (Group) Building

AMS7B(2)

3RS Site Office

Remarks:

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

(2)    The original monitoring location was at Hong Kong SkyCity Marriott Hotel (AMS7). As the permission to carry out air quality monitoring at Hong Kong SkyCity Marriott Hotel was not granted after 31 January 2015, the monitoring location was relocated to Chu Kong Air-Sea Union Transportation Co. Ltd. (AMS7A) from 5 February 2015 to 30 December 2015. The alternative monitoring location at Chu Kong Air-Sea Union Transportation Co. Ltd. was approved by EPD on 5 February 2015. However, AMS7A was relocated back to its original location (AMS7-Hong Kong SkyCity Marriott Hotel) on 30 December 2015. The relocation of air quality monitoring location, AMS7A, back to AMS7 was approved by EPD on 21 December 2015. As the permission to carry out air quality monitoring at Hong Kong SkyCity Marriott Hotel was not granted after the end of January 2018, as such, a proposal for the monitoring location relocated to 3RS Site Office(AMS7B) was justified by the ET Leader for Contract No. HY/2013/01 on 22 January 2018; verified by the IEC on 24 January 2018; and submitted to EPD on 30 January 2018, and the AQM has been carrying out at AMS7B with EPD’s consent since 6 February 2018.  

2.4.1      Table 2.5 summarizes the monitoring parameters, frequency and duration of impact TSP monitoring.

Table 2.5         Air Quality Monitoring Parameters, Frequency and Duration

Parameter

Frequency and Duration

1-hour TSP

Three times every 6 days while the highest dust impact was expected

24-hour TSP

Once every 6 days

2.5.1      24-hour TSP Monitoring

(a)        The HVS was installed in the vicinity of the air sensitive receivers. The following criteria were considered in the installation of the HVS.

(i)   A horizontal platform with appropriate support to secure the sampler against gusty wind was provided.

(ii)    The distance between the HVS and any obstacles, such as buildings, was at least twice the height that the obstacle protrudes above the HVS.

(iii)   A minimum of 2 meters separation from walls, parapets and penthouse for rooftop sampler was provided.

(iv)   No furnace or incinerator flues are nearby.

(v)   Airflow around the sampler was unrestricted.

(vi)   Permission was obtained to set up the samplers and access to the monitoring stations.

(vii)  A secured supply of electricity was obtained to operate the samplers.

(viii) The sampler was located more than 20 meters from any dripline.

(ix)   Any wire fence and gate, required to protect the sampler, did not obstruct the monitoring process.

(x)   Flow control accuracy was kept within ±2.5% deviation over 24-hour sampling period.

(b)       Preparation of Filter Papers

(i)    Glass fibre filters, G810 were labelled and sufficient filters that were clean and without pinholes were selected.

(ii)    All filters were equilibrated in the conditioning environment for 24 hours before weighing. The conditioning environment temperature was around 25°C and not variable by more than ±3 °C; the relative humidity (RH) was < 50% and not variable by more than ±5%. A convenient working RH was 40%.

(iii)   All filter papers were prepared and analysed by ALS Technichem (HK) Pty Ltd., which is a HOKLAS accredited laboratory and has comprehensive quality assurance and quality control programmes.

(c)        Field Monitoring

(i)    The power supply was checked to ensure the HVS works properly.

(ii)    The filter holder and the area surrounding the filter were cleaned.

(iii)   The filter holder was removed by loosening the four bolts and a new filter, with stamped number upward, on a supporting screen was aligned carefully.

(iv)   The filter was properly aligned on the screen so that the gasket formed an airtight seal on the outer edges of the filter.

(v)   The swing bolts were fastened to hold the filter holder down to the frame. The pressure applied was sufficient to avoid air leakage at the edges.

(vi)   Then the shelter lid was closed and was secured with the aluminium strip.

(vii)  The HVS was warmed-up for about 5 minutes to establish run-temperature conditions.

(viii) A new flow rate record sheet was set into the flow recorder.

(xi)   On site temperature and atmospheric pressure readings were taken and the flow rate of the HVS was checked and adjusted at around 1.1 m3/min, and complied with the range specified in the Updated EM&A Manual for HKBCF (Version 1.0) (i.e. 0.6-1.7 m3/min).

(x)   The programmable digital timer was set for a sampling period of 24 hours, and the starting time, weather condition and the filter number were recorded.

(xi)   The initial elapsed time was recorded.

(xii)  At the end of sampling, on site temperature and atmospheric pressure readings were taken and the final flow rate of the HVS was checked and recorded.

(xiii) The final elapsed time was recorded.

(xiv) The sampled filter was removed carefully and folded in half length so that only surfaces with collected particulate matter were in contact.

(xv)  It was then placed in a clean plastic envelope and sealed.

(xvi) All monitoring information was recorded on a standard data sheet.

(xvii) Filters were then sent to ALS Technichem (HK) Pty Ltd. for analysis.

(d)        Maintenance and Calibration

(i)    The HVS and its accessories were maintained in good working condition, such as replacing motor brushes routinely and checking electrical wiring to ensure a continuous power supply.

(ii)    5-point calibration of the HVS was conducted using TE-5025A Calibration Kit prior to the commencement of baseline monitoring. Bi-monthly 5-point calibration of the HVS will be carried out during impact monitoring.

(iii)   Calibration certificate of the HVSs are provided in Appendix G.

2.5.2      1-hour TSP Monitoring

(a)        Measuring Procedures

The measuring procedures of the 1-hour dust meter were in accordance with the Manufacturer’s Instruction Manual as follows:-

(i)    Turn the power on.

(ii)    Close the air collecting opening cover.

(iii)   Push the “TIME SETTING” switch to [BG].

(iv)   Push “START/STOP” switch to perform background measurement for 6 seconds.

(v)   Turn the knob at SENSI ADJ position to insert the light scattering plate.

(vi)   Leave the equipment for 1 minute upon “SPAN CHECK” is indicated in the display.

(vii)  Push “START/STOP” switch to perform automatic sensitivity adjustment. This measurement takes 1 minute.

(viii) Pull out the knob and return it to MEASURE position.

(ix)   Push the “TIME SETTING” switch the time set in the display to 3 hours.

(x)   Lower down the air collection opening cover.

(xi)   Push “START/STOP” switch to start measurement.

(b)        Maintenance and Calibration

(i)    The 1-hour TSP meter was calibrated at 1-year intervals against a Tisch Environmental Mass Flow Controlled Total Suspended Particulate (TSP) High Volume Air Sampler. Calibration certificates of the Laser Dust Monitors are provided in Appendix G.

2.6.1      The schedule for air quality monitoring in February 2018 is provided in Appendix M.

2.7          Monitoring Results

2.7.1      The monitoring results for 1-hour and 24-hour TSP are summarized in Table 2.6 and 2.7 respectively. Detailed impact air quality monitoring results are presented in Appendix D.

 

Table 2.6         Summary of 1-hour TSP Monitoring Results During the Reporting Month

Monitoring Station

Average, mg/m3

Range, mg/m3

Action Level, µg/m3

Limit Level, µg/m3

AMS2

48

32 - 71

374

500

AMS3B

47

24 - 80

368

AMS7B

74

21 - 255

370

Table 2.7         Summary of 24-hour TSP Monitoring Results During the Reporting Month

Monitoring Station

Average, mg/m3

Range, mg/m3

Action Level, µg/m3

Limit Level, µg/m3

AMS2

80

65 - 99

176

260

AMS3B

78

56- 90

167

AMS7B

120

81 - 172

183

 

2.7.2      No Action and Limit Level exceedances of 1-hour TSP were recorded at AMS2, AMS3B and AMS7B during the reporting month.

2.7.3      No Action and Limit Level exceedances of 24-hour TSP were recorded at AMS2, AMS3B and AMS7B during the reporting month.

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

2.7.5      The event and action plan is provided in Appendix H.

2.7.6      The wind data obtained from the on-site wind station (as shown in Figure 2.1) during the reporting month is provided in Appendix F.

 

 

3.1.1      In accordance with the Contract Specific EM&A Manual, impact noise monitoring was conducted for at least once per week during the construction phase of the Contract. The Action and Limit Level for the noise monitoring is provided in Table 3.1.

Table 3.1         Action and Limit Levels for Noise during Construction Period

Monitoring Station

Time Period

Action Level

Limit Level

NMS2

0700-1900 hours on normal weekdays

When one documented complaint is received.

75 dB(A)

NMS3B

70/65 dB(A)*

Remark:

* Limit Level for schools will be applied for NMS3B. Daytime noise Limit Level of 70 dB(A) applies to education institutions, while 65 dB(A) applies during the school examination period.

3.2.1      Noise monitoring was performed using sound level meters at each designed monitoring station. The sound level meters deployed comply with the International Electrotechnical Commission Publications (IEC) 651:1979 (Type 1) and 804:1985 (Type 1) specifications. Acoustic calibrator was deployed to check the sound level meters at a known sound pressure level. Brand and model of the equipment are given in Table 3.2.

Table 3.2         Noise Monitoring Equipment

Equipment

Brand and Model

Integrated Sound Level Meter

B&K 2238

Acoustic Calibrator

B&K 4231

3.3.1      Monitoring location NMS2 was set up at the proposed locations in accordance with Contract Specific EM&A Manual. However, for monitoring location NMS3 (Ho Yu College), as proposed in the Contract Specific EM&A Manual, approval for carrying out impact monitoring could not be obtained from the principal of school. Permission on setting up and carry out impact monitoring works at nearby sensitive receivers, like Caribbean Coast and Coastal Skyline, was also sought. However, approvals for carrying out impact monitoring works within their premises were not obtained. Impact noise monitoring was conducted at site boundary of the site office area in Work Area WA2 (NMS3B) respectively. Same baseline noise level (as derived from the baseline monitoring data recorded at Ho Yu College) and Limit Level were adopted for this alternative noise monitoring location.

3.3.2      Figure 3.1 shows the locations of noise monitoring stations. Table 3.3 describes the details of monitoring stations.

 

Table 3.3         Construction Noise Monitoring Locations

ID

Location Description

NMS2

Seaview Crescent

NMS3B

Site Boundary of Site Office Area at Works Area WA2

Remarks:

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

(2)        Limit Level for schools will be applied for NMS3B. Day time noise Limit Level of 70 dB(A) applies to education institutions, while 65 dB(A) applies during the school examination period.

 

3.4          Monitoring Parameters, Frequency and Duration

3.4.1      Table 3.4 summarizes the monitoring parameters, frequency and duration of impact noise monitoring.

Table 3.4         Noise Monitoring Parameters, Frequency and Duration

Parameter

Frequency and Duration

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

At least once per week

 

3.5          Monitoring Methodology

3.5.1      Monitoring Procedure

(a)        The measurement at NMS3B was free-field measurement and NMS2 was Façade measurement. A correction of +3dB(A) shall be made to the free-field measurement.

(b)        The battery condition was checked to ensure the correct functioning of the meter.

(c)        Parameters such as frequency weighting, the time weighting and the measurement time were set as follows:-

            (i)     frequency weighting: A

            (ii)    time weighting: Fast

            (iii)    time measurement: Leq (30-minutes) during non-restricted hours i.e. 0700-1900 on normal workdays.

(d)        Prior to and after each noise measurement, the meter was calibrated using the acoustic calibrator for 94dB(A) at 1000 Hz. If the difference in the calibration level before and after measurement was more than 1 dB(A), the measurement would be considered invalid and repeat of noise measurement would be required after re-calibration or repair of the equipment.

(e)        During the monitoring period, the Leq, L10 and L90 were recorded. In addition, site conditions and noise sources were recorded on a standard record sheet.

(g)        Noise measurement was paused during periods of high intrusive noise (e.g. dog barking, helicopter noise) if possible. Observations were recorded when intrusive noise was unavoidable.

(h)        Noise monitoring was cancelled in the presence of fog, rain, wind with a steady speed exceeding 5m/s, or wind with gusts exceeding 10m/s. The wind speed shall be checked with a portable wind speed meter capable of measuring the wind speed in m/s.

3.5.2      Maintenance and Calibration

(a)        The microphone head of the sound level meter was cleaned with soft cloth at regular intervals.

(b)        The meter and calibrator were sent to the supplier or HOKLAS laboratory to check and calibrate at yearly intervals.

(c)        Calibration certificates of the sound level meters and acoustic calibrators are provided in Appendix G.

3.6.1      The schedule for construction noise monitoring in February 2018 is provided in Appendix M.

3.7          Monitoring Results

3.7.1      The monitoring results for construction noise are summarized in Table 3.5. Detailed monitoring results and relevant graphical plots are presented in Appendix D.

Table 3.5         Summary of Construction Noise Monitoring Results During the Reporting Month

Monitoring Stations

Average, dB(A)
Leq (30 mins)

Range, dB(A)
Leq (30 mins)

Limit Level, dB(A)
Leq (30 mins)

NMS2

66

64 - 67

75

NMS3B(*)

66

62 - 68

70/65

Remark: (*) The Limit Level for schools will be applied for NMS3B. Daytime noise Limit Level of 70 dB(A) applies to education institutions, while 65 dB(A) applies during the school examination period.

 

3.7.2      School calendar of Ho Yu College was checked and no school examination period at Ho Yu College during the reporting month.

3.7.3      The event and action plan is provided in Appendix H.

 

 

4           Water Quality Monitoring

4.1.1      Impact water quality monitoring was carried out to ensure that any deterioration of water quality was detected, and that timely action was taken to rectify the situation. For impact water quality monitoring, measurement were taken in accordance with the Contract Specific EM&A Manual. Table 4.1 shows the established Action and Limit Levels for the environmental monitoring works.

Table 4.1         Action and Limit Levels for Water Quality

Parameters

Action Level

Limit Level

DO in mg L-1

(Surface, Middle & Bottom)

Surface and Middle

5.0

Bottom

4.7

Surface and Middle

4.2 (except 5 mg/L for FCZ)

Bottom

3.6

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

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

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

Turbidity in NTU

(depth-averaged)

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

47.0 and 130% of upstream control station's turbidity at the same tide of the same day*

Remarks: * Reference is made to EPD approval of adjustment of water quality assessment criteria issued and became
          effective on 18 February 2013.
Notes:   1. “depth-averaged” is calculated by taking the arithmetic means of reading of all three depths.
         2. For DO, non-compliance of the water quality limits occurs when monitoring result is lower than the limits.
         3. For turbidity, SS, non-compliance of the water quality limits occurs when monitoring result is higher than the limits.
         4. All the figures given in the table are used for reference only and the EPD may amend the figures whenever it is
           considered as necessary.
         5. The 1%-ile of baseline data for dissolved oxygen (surface and middle) and dissolved oxygen (bottom) are 4.2 mg/L and
           3.6 mg/L respectively.

4.2.1      Table 4.2 summaries the equipment used in the impact water quality monitoring programme.

Table 4.2         Water Quality Monitoring Equipment

Equipment

Brand and Model

Serial Number

DO and Temperature Meter, Salinity Meter, Turbidity Meter an pH Meter

YSI ProDSS

16H104234 / 17H105557/ 17E100747/ 15M100005

 

 

 

 

4.3.1      Table 4.3 summarizes the monitoring parameters, frequency and monitoring depths of impact water quality monitoring in the Contract Specific EM&A Manual.

Table 4.3         Impact Water Quality Monitoring Parameters and Frequency

Monitoring Stations

Parameter, unit

Frequency

No. of depth

Impact Stations:
IS5, IS(Mf)6, IS7, IS8, IS(Mf)9, IS10(N), IS(Mf)11, IS(Mf)16, IS17

Control/Far Field Stations:
CS(Mf)3(N), CS(Mf)5, CS4, CS6, CSA

Sensitive Receiver Stations:
SR3(N), SR4(N), SR5(N), SR6, SR7, SR10A(N) & SR10B(N)(2)

-    Depth, m

-    Temperature, oC

-    Salinity, ppt

-    Dissolved Oxygen (DO), mg/L

-    DO Saturation, %

-    Turbidity, NTU

-    pH

-    Suspended Solids (SS), mg/L

Three times per week during mid-ebb and mid-flood tides
(within ±1.75 hour of the predicted time)

3

(1m below water surface, mid-depth and 1m above sea bed, except where the water depth is less than 6m, in which case the mid-depth station may be omitted. Should the water depth less than 3m, only the mid-depth station will be monitored.)

4.4.1      In accordance with the Contract Specific EM&A Manual, a total of twenty-one stations (nine Impact Stations, seven Sensitive Receiver Stations and five Control/Far Field Stations) were designated for impact water quality monitoring. The nine Impact Stations (IS) were chosen on the basis of their proximity to the reclamation and thus the greatest potential for water quality impacts, the seven Sensitive Receiver Stations (SR) were chosen as they are close to the key sensitive receives and the five Control/ Far Field Stations (CS) were chosen to facilitate comparison of the water quality of the IS stations with less influence by the Project/ ambient water quality conditions

4.4.2      The water quality monitoring stations at CS(Mf)3 (Coordinate: 809989E, 821117N), IS10 (Coordinate: 812577E, 820670N) and SR5 (811489E, 820455N) have been occupied by the marine work of a designated project - Expansion of Hong Kong International Airport into a Three-Runway System (3RS Project). The alternative water quality monitoring station at CS(Mf)3(N) (Coordinate: 808814E, 822355N), IS10(N) (Coordinate: 812942E, 820881N) and SR5(N) (812569E, 8201475N) were justified and verified by the ET Leader for Contract No. HY/2010/02 and the IEC respectively on 24 March 2017 and it was approved by EPD on 12 May 2017.

4.4.3      The water quality monitoring stations at SR3, SR10A and SR10B(N) were not available for water sampling due to safety reason, thus, monitoring stations were changed to SR3(N) (Coordinate: 810689E, 816591N); SR10A(N) (Coordinate: 823644E, 823484N) and SR10B(N2) (Coordinate:823689E, 823159N) were justified by the ET Leader on 8 November 2017 and the IEC verified on 13 November 2017; and submitted to EPD on 29 November 2017 and it was approved by EPD on 22 December 2017.

4.4.4      Table 4.4 and Figure 4.1 shows the locations of water quality monitoring stations.

Table 4.4         Impact Water Quality Monitoring Stations

Station

Description

East

North

IS5

Impact Station (Close to HKBCF construction site)

811579

817106

IS(Mf)6

Impact Station (Close to HKBCF construction site)

812101

817873

IS7

Impact Station (Close to HKBCF construction site)

812244

818777

IS8

Impact Station (Close to HKBCF construction site)

814251

818412

IS(Mf)9

Impact Station (Close to HKBCF construction site)

813273

818850

IS10(N)*

Impact Station (Close to HKBCF construction site)

812942

820881

IS(Mf)11

Impact Station (Close to HKBCF construction site)

813562

820716

IS(Mf)16

Impact Station (Close to HKBCF construction site)

814328

819497

IS17

Impact Station (Close to HKBCF construction site)

814539

820391

SR3(N) ^

Sensitive receivers (San Tau SSSI)

810689

816591

SR4(N)

Sensitive receivers (Tai Ho)

814705

817859

SR5(N)*

Sensitive receiver (Artificial Reef in NE Airport)

812569

821475

SR6

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

805837

821818

SR7

Sensitive receivers (Tai Mo Do)

814293

821431

SR10A(N) ^

Sensitive receivers (Ma Wan FCZ) 1

823644

823484

SR10B(N2) ^

Sensitive receivers (Ma Wan FCZ) 2

823689

823159

CS(Mf)3(N)*

Control Station

808814

822355

CS(Mf)5

Control Station

817990

821129

CS4

Control Station

810025

824004

CS6

Control Station

817028

823992

CSA

Control Station

818103

823064

Remarks:
*Alternative water quality monitoring stations at CS(Mf)3(N), SR5(N) and IS10(N) were justified and verified by the ET Leader for Contract No. HY/2010/02 and the IEC respectively on 24 March 2017 and it was approved by EPD on 12 May 2017.

^ Alternative water quality monitoring stations at SR3, SR10A and SR10B(N) were justified by the ET Leader on 8 November 2017 and verified by IEC on 13 November 2017; and submitted to EPD on 29 November 2017 and it was approved by EPD on 22 December 2017.

4.5.1      Instrumentation

(a)        The in-situ water quality parameters, viz. dissolved oxygen, temperature, salinity, turbidity and pH, were measured by multi-parameter meters and pH meter.

4.5.2      Operating/Analytical Procedures

(a)        Digital Differential Global Positioning Systems (DGPS) were used to ensure that the correct location was selected prior to sample collection.

(b)        Portable, battery-operated echo sounders were used for the determination of water depth at each designated monitoring station.

(c)        All in-situ measurements were taken at 3 water depths, 1m below water surface, mid-depth and 1m above sea bed, except where the water depth was less than 6m, in which case the mid-depth station was omitted. Should the water depth be less than 3m, only the mid-depth station was monitored.

(d)        At each measurement/sampling depth, two consecutive in-situ monitoring (DO concentration and saturation, temperature, turbidity, pH, salinity) and water sample for SS. The probes were retrieved out of the water after the first measurement and then re-deployed for the second measurement. Where the difference in the value between the first and second readings of DO or turbidity parameters was more than 25% of the value of the first reading, the reading was discarded and further readings were taken.

(e)        Duplicate samples from each independent sampling event were collected for SS measurement. Water samples were collected using the water samplers and the samples were stored in high density polythene bottles. Water samples collected were well-mixed in the water sampler prior to pre-rinsing and transferring to sample bottles. Sample bottles were pre-rinsed with the same water samples. The sample bottles were then be packed in cool-boxes (cooled at 4°C without being frozen), and delivered to ALS Technichem (HK) Pty Ltd. for the analysis of suspended solids concentrations. The laboratory determination work would be started within 24 hours after collection of the water samples. ALS Technichem (HK) Pty Ltd. is a HOKLAS accredited laboratory and has comprehensive quality assurance and quality control programmes. For QA/QC procedures, one duplicate samples of every batch of 20 samples was analyzed.

(f)         The analysis method and reporting and detection limit for SS is shown in Table 4.5.

Table 4.5    Laboratory Analysis for Suspended Solids

Parameters

Instrumentation

Analytical Method

Reporting Limit

Detection Limit

Suspended Solids (SS)

Weighting

APHA 2540-D

0.5mg/L

0.5mg/L

(g)        Other relevant data were recorded, including monitoring location / position, time, water depth, tidal stages, weather conditions and any special phenomena or work underway at the construction site in the field log sheet for information.

4.5.3      Maintenance and Calibration

(a)        All in situ monitoring instruments would be calibrated and calibrated by ALS Technichem (HK) Pty Ltd. before use and at 3-monthly intervals throughout all stages of the water quality monitoring programme. Calibration details are provided in Appendix G.

(b)       The dissolved oxygen probe of YSI 6820 was calibrated by wet bulb method. Before the calibration routine, the sensor for dissolved oxygen was thermally equilibrated in water-saturated air. Calibration cup is served as a calibration chamber and it was loosened from airtight condition before it is used for the calibration. Calibration at ALS Technichem (HK) Pty Ltd. was carried out once every three months in a water sample with a known concentration of dissolved oxygen. The sensor was immersed in the water and after thermal equilibration, the known mg/L value was keyed in and the calibration was carried out automatically.

(c)        The turbidity probe of YSI 6820 is calibrated two times a month. A zero check in distilled water was performed with the turbidity probe of YSI 6820 once per monitoring day. The probe will be calibrated with a solution of known NTU at ALS Technichem (HK) Pty Ltd. once every three months.

4.6          Monitoring Result

4.6.1      Impact water quality monitoring results and graphical plots are provided in Appendix D.

4.6.2      For impact water quality monitoring, number of exceedances recorded during the reporting month at each impact station are summarised in Table 4.6.

4.6.3      No Action Level and Limit Level exceedances dissolved oxygen were recorded at mid-ebb tide and mid-flood tide during the reporting month.

4.6.4      No Action Level and Limit Level exceedances of turbidity were recorded at mid-ebb tide and mid-flood tide during the reporting month.

4.6.5      Two Action Level exceedances of suspended solid were recorded at mid-flood tide on 2 February 2018. No Action Level exceedances of suspended solid were recorded at mid-ebb tide and no Limit Level exceedances of suspended solid were recorded at mid-ebb tide and mid-flood tide during the reporting month.

4.6.6      As confirmed by the Contractor, no marine transportation and marine-based work was conducted during the water quality exceedance day. Therefore, it is concluded that the exceedances were not related the Contract. The detailed investigation results of this exceedance recorded is shown in Appendix N.

 

4.6.7      The event and action plan is provided in Appendix H.

Table 4.6         Summary of Water Quality Exceedances

Station

Exceedance Level

DO (S&M)

DO (Bottom)

Turbidity

SS

Ebb

Flood

Ebb

Flood

Ebb

Flood

Ebb

Flood

IS5

Action Level

 

 

 

 

 

 

 

 

Limit Level

 

 

 

 

 

 

 

 

IS(Mf)6

Action Level

 

 

 

 

 

 

 

 

Limit Level

 

 

 

 

 

 

 

 

IS7

Action Level

 

 

 

 

 

 

 

 

Limit Level

 

 

 

 

 

 

 

 

IS8

Action Level

 

 

 

 

 

 

 

 

Limit Level

 

 

 

 

 

 

 

 

IS(Mf)9

Action Level

 

 

 

 

 

 

 

 

Limit Level

 

 

 

 

 

 

 

 

IS10(N)

Action Level

 

 

 

 

 

 

 

 

Limit Level

 

 

 

 

 

 

 

 

IS(Mf)11

Action Level

 

 

 

 

 

 

 

 

Limit Level

 

 

 

 

 

 

 

 

IS(Mf)16

Action Level

 

 

 

 

 

 

 

 

Limit Level

 

 

 

 

 

 

 

 

IS17

Action Level

 

 

 

 

 

 

 

 

Limit Level

 

 

 

 

 

 

 

 

SR3(N)

Action Level

 

 

 

 

 

 

 

 

Limit Level

 

 

 

 

 

 

 

 

SR4(N)

Action Level

 

 

 

 

 

 

 

 

Limit Level

 

 

 

 

 

 

 

 

SR5(N)

Action Level

 

 

 

 

 

 

 

 

Limit Level

 

 

 

 

 

 

 

 

SR6

Action Level

 

 

 

 

 

 

 

2018-02-02

Limit Level

 

 

 

 

 

 

 

 

SR7

Action Level

 

 

 

 

 

 

 

2018-02-02

Limit Level

 

 

 

 

 

 

 

 

SR10A(N)

Action Level

 

 

 

 

 

 

 

 

Limit Level

 

 

 

 

 

 

 

 

SR10B
(N2)

Action Level

 

 

 

 

 

 

 

 

Limit Level

 

 

 

 

 

 

 

 

Total

Action Level

0

0

0

0

0

0

0

2

2

Limit Level

0

0

0

0

0

0

0

0

0

 

 

 

5        Dolphins Monitoring

5.1.1      Vessel based surveys for the Chinese White Dolphin (CWD), Sousa chinensis, are to be conducted by a dedicated team comprising a qualified marine mammal ecologist and experienced marine mammal observers (MMOs). The purpose of the surveys is to evaluate the impact of the HKCBF reclamation and, if deemed detrimental, to take appropriate action as per the EM&A manual.

5.1.2      The Action and Limit Level for dolphin monitoring are provided in Table 5.1 and 5.2 respectively.

Table 5.1        Action and Limit Levels for Chinese White Dolphin Monitoring - Approach to Define Action Level (AL) and Limit Level (LL)

North Lantau Social Cluster

Northeast Lantau (NEL)

Northwest Lantau (NWL)

Action Level

(STG < 70% of baseline) &

(ANI < 70% of baseline)

(STG < 70% of baseline) &

(ANI < 70% of baseline)

Limit Level

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

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

Remarks:

1.    STG means no. of on-effort dolphin sightings per 100 km of survey effort

2.     ANI means no. of dolphins from all on-effort sightings per 100 km of survey effort

3.     For North Lantau Social Cluster, AL will be trigger if either NEL or NWL fall below the criteria; LL will be triggered if both NEL and NWL fall below the criteria. 

 

 

Table 5.2        Derived Value of Action Level (AL) and Limit Level (LL) for Chinese White Dolphin Monitoring

 

North Lantau Social Cluster

 

NEL

NWL

Action Level

(STG < 4.2) & (ANI < 15.5)

(STG < 6.9) & (ANI < 31.3)

Limit Level

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

 

5.1.3      The event and action plan is provided in Appendix H.

Vessel-based Line-transect Survey

5.2.1      According to the requirement of the updated EM&A manual, dolphin monitoring programme should cover all transect lines in NEL and NWL survey areas (Figure 1 of Appendix E) twice per month throughout the entire construction period.

5.2.2      The co-ordinates for the transect lines and a layout map showing the transect lines have been provided by AFCD and are shown in Table 5.3.

Table 5.3           Impact Dolphin Monitoring Transect Line Co-ordinates  

Transect Line No.

HK Grid System

Easting

Northing

1(#)

804671

815456

804671

831404

2(#)

805476

820800

805476

826654

3

806464

821150

806464

822911

4

807518

821500

807518

829230

5

808504

821850

808504

828602

6

809490

822150

809490

825352

7(#)

810499

822000

810499

824613

8(#)

811508

821123

811508

824254

9(#)

812516

821303

812516

824254

10*

813525

820827

813525

824657

11#

814556

818853

814556

820992

12

815542

818807

815542

824882

13

816506

819480

816506

824859

14

817537

820220

817537

824613

15

818568

820735

818568

824433

16

819532

821420

819532

824209

17

820451

822125

820451

823671

18

821504

822371

821504

823761

19

822513

823268

822513

824321

20

823477

823402

823477

824613

21

805476

827081

805476

830562

22

806464

824033

806464

829598

23

814559

821739

814559

824768

24

805476

815900

805476

819100

Remarks:

(a)    * Due to the presence of deployed silt curtain systems at the site boundaries of the Contract, some of the transect lines shown in Figure 1 of Appendix E could not be fully surveyed during the regular survey. Transect 10 is reduced from 6.4km to approximately 3.6km in length due to the HKBCF construction site. Therefore, the total transect length for both NEL and NWL combined is reduced to approximately 108km.

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

(c)    Due to marine work of the Expansion of Hong Kong International Airport into a Three-Runway System (3RS Project), original transect lines of dolphin monitoring 2, 3, 4, 5, 6 and 7 are enclosed by works boundary of 3RS Project. Alternative dolphin monitoring transect lines 2, 3, 4, 5, 6, 7 and 24 are adopted starting from 17 May 2017 to replace the original transect lines.

(d)    The change of transect lines 2, 3, 4, 5, 6 and 7 and new vessel-based transect line 24 for dolphin monitoring have been proposed due to the marine work of a designated project - Expansion of Hong Kong International Airport into a Three-Runway System (3RS Project). It was justified and verified by the ET Leader for Contract No. HY/2010/02 and the IEC respectively on 24 March 2017 and it was approved by EPD on 12 May 2017.

 

5.2.3      The survey team used standard line-transect methods (Buckland et al. 2001) to conduct the systematic vessel surveys, and followed the same technique of data collection that has been adopted over the last 20 years of marine mammal monitoring surveys in Hong Kong developed by HKCRP (see Hung 2017).  For each monitoring vessel survey, a 15-m inboard vessel with an open upper deck (about 4.5 m above water surface) was used to make observations from the flying bridge area.

5.2.4      Two experienced observers (a data recorder and a primary observer) made up the on-effort survey team, and the survey vessel transited different transect lines at a constant speed of 13-15 km per hour.  The data recorder searched with unaided eyes and filled out the datasheets, while the primary observer searched for dolphins and porpoises continuously through 7 x 50 Fuinon marine binoculars.

5.2.5      Both observers searched the sea ahead of the vessel, between 270o and 90o (in relation to the bow, which is defined as 0o).  One to two additional experienced observers were available on the boat to work in shift (i.e. rotate every 30 minutes) in order to minimize fatigue of the survey team members. All observers were experienced in small cetacean survey techniques and identifying local cetacean species.

5.2.6      During on-effort survey periods, the survey team recorded effort data including time, position (latitude and longitude), weather conditions (Beaufort sea state and visibility), and distance traveled in each series (a continuous period of search effort) with the assistance of a handheld GPS (Garmin eTrex Legend). 

5.2.7      Data including time, position and vessel speed were also automatically and continuously logged by handheld GPS throughout the entire survey for subsequent review.

5.2.8      When dolphins were sighted, the survey team would end the survey effort, and immediately record the initial sighting distance and angle of the dolphin group from the survey vessel, as well as the sighting time and position.  Then the research vessel was diverted from its course to approach the animals for species identification, group size estimation, assessment of group composition, and behavioural observations.  The perpendicular distance (PSD) of the dolphin group to the transect line was later calculated from the initial sighting distance and angle.

5.2.9      Survey effort being conducted along the parallel transect lines that were perpendicular to the coastlines (as indicated in Figure 1 of Appendix E) was labeled as “primary” survey effort, while the survey effort conducted along the connecting lines between parallel lines was labeled as “secondary” survey effort.  According to HKCRP long-term dolphin monitoring data, encounter rates of Chinese white dolphins deduced from effort and sighting data collected along primary and secondary lines were similar in NEL and NWL survey areas.  Therefore, both primary and secondary survey effort were presented as on-effort survey effort in this report.

5.2.10    Encounter rates of Chinese white dolphins (number of on-effort sightings per 100 km of survey effort and number of dolphins from all on-effort sightings per 100 km of survey effort) were calculated in NEL and NWL survey areas in relation to the amount of survey effort conducted during each month of monitoring survey.  Only data collected under Beaufort 3 or below condition would be used for encounter rate analysis.  Dolphin encounter rates were calculated using primary survey effort alone, as well as the combined survey effort from both primary and secondary lines.

Photo-identification Work

5.2.11    When a group of Chinese White Dolphins were sighted during the line-transect survey, the survey team would end effort and approach the group slowly from the side and behind to take photographs of them.  Every attempt was made to photograph every dolphin in the group, and even photograph both sides of the dolphins, since the colouration and markings on both sides may not be symmetrical.

5.2.12    A professional digital camera (Canon EOS 7D or 60D model), equipped with long telephoto lenses (100-400 mm zoom), were available on board for researchers to take sharp, close-up photographs of dolphins as they surfaced.  The images were shot at the highest available resolution and stored on Compact Flash memory cards for downloading onto a computer.

5.2.13    All digital images taken in the field were first examined, and those containing potentially identifiable individuals were sorted out.  These photographs would then be examined in greater detail, and were carefully compared to the existing Chinese White Dolphin photo-identification catalogue maintained by HKCRP since 1995. 

5.2.14    Chinese White Dolphins can be identified by their natural markings, such as nicks, cuts, scars and deformities on their dorsal fin and body, and their unique spotting patterns were also used as secondary identifying features (Jefferson 2000). 

5.2.15    All photographs of each individual were then compiled and arranged in chronological order, with data including the date and location first identified (initial sighting), re-sightings, associated dolphins, distinctive features, and age classes entered into a computer database. 

5.3.1      The schedule for dolphin monitoring in February 2018 is provided in Appendix M.

5.4          Monitoring Result

Vessel-based Line-transect Survey

5.4.1      Two sets of systematic line-transect vessel surveys were conducted under the HKBCF dolphin monitoring programme on the 1, 6, 13 and 26 February 2018, to cover all transect lines in NWL and NEL survey areas twice.  The survey routes of each survey day are presented in Figures 2 to 5 of Appendix E.

5.4.2      A total of 269.42 km of survey effort was collected, with 94.6% of the total survey effort being conducted under favourable weather conditions (i.e. Beaufort Sea State 3 or below with good visibility) during the February’s surveys (Annex I of Appendix E). 

5.4.3      Among the two areas, 102.80 km and 166.62 km of survey effort were collected from NEL and NWL survey areas respectively.  The total survey effort conducted on primary and secondary lines were 189.25 km and 80.17 km respectively (Annex I of Appendix E).

5.4.4      During the two sets of monitoring surveys in February 2018, a total of 14 groups of 45 Chinese White Dolphins were sighted (Annex II of Appendix E).  All dolphin sightings were made in NWL, while an exceptionally rare sighting was also made in NEL (note: the last dolphin sighting made in NEL during HZMB-related surveys can be dated back to June 2016). 

5.4.5      From the February’s surveys, all 14 dolphin groups were sighted during on-effort search and all except three of them were made on primary line (Annex II of Appendix E). The sighting was not associated with any operating fishing vessel. 

5.4.6      Distribution of the dolphin sightings made in February 2018 is shown in Figure 6 of Appendix E. The majority of dolphin groups were sighted toward the western end of North Lantau region, mainly to the west of the airport platform, as well as near Lung Kwu Chau and Sha Chau (Figure 6 of Appendix E). The other sightings were scattered near Black Point, Pillar Point and the northeast corner of the airport.

5.4.7      The lone sighting of five dolphins in NEL occurred near Siu Ho Wan (Figure 6 of Appendix E). In fact, this dolphin group was first sighted at the northeast corner of airport in NWL, and the research team decided to conduct focal-follow on them as they were moving in eastward direction. The focal-follow session ended two hours later, with the final location of the dolphin group sighted near the Brothers Islands.  Then the same dolphin group was sighted again near Siu Ho Wan during on-effort search in NEL.

5.4.8      Notably, all dolphin groups were sighted far away from the HKBCF reclamation site, as well as the HKLR03 reclamation site and TMCLKL alignment (Figure 6 of Appendix E).  However, two dolphin groups were sighted adjacent to the HKLR09 alignment.

5.4.9      During the February’s surveys, encounter rates of Chinese White Dolphins deduced from the survey effort and on-effort sighting data made under favourable conditions (Beaufort 3 or below) are shown in Tables 5.4 and 5.5.

Table 5.4           Dolphin encounter rates deduced from the two sets of HKBCF surveys (two surveys in each set) in February 2018 in Northeast (NEL) and Northwest Lantau (NWL)

 

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: February 1st / 6th

3.1

15.7

Set 2: February 13th / 26th

0.0

0.0

NWL

Set 1: February 1st / 6th  

4.3

6.5

Set 2: February 13th / 26th

9.8

34.3

 

Table 5.5           Overall dolphin encounter rates (sightings per 100 km of survey effort) from all four HKBCF surveys conducted in February 2018 on primary lines only as well as both primary lines and secondary lines in Northeast and Northwest Lantau

 

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

Both Primary and Secondary Lines

Primary Lines Only

Both Primary and Secondary Lines

Northeast Lantau

1.5

1.0

7.4

4.9

Northwest Lantau

7.5

7.2

22.4

23.0

 

5.4.10    The average dolphin group size in February 2018 was 3.2 individuals per group. Nine of the 14 dolphin groups were small in size with 1-3 animals per group, while the other five groups were medium in size with 5-7 animals respectively (Annex II of Appendix E). 

Photo-identification Work

5.4.11    Fifteen known individual dolphins were re-sighted 29 times during February’s surveys (Annex III and IV of Appendix E). Six of them were re-sighted only once during the monitoring month, while eight individuals were re-sighted twice or thrice. One individual (NL 136) was repeatedly re-sighted for six times in total on three survey days.

 

5.4.12    Notably, one of the identified individuals (WL179) was sighted with her young calf during their re-sightings in February 2018.

 

 

 

6.1.1      Site Inspections were carried out on a weekly basis to monitor the implementation of proper environmental pollution control and mitigation measures for the Contract No. HY/2013/01 (includes the construction works of Contract No. HY/2013/06 within Contract No. HY/2013/01 works area). During the reporting period, site inspections of Contract No. HY/2013/01 were carried out on 7, 14, 21 and 28 February 2018 while Contract No. HY/2013/06 (within Contract No. HY/2013/01 works area) were carried out on 21 and 28 February 2018.

6.1.2      Particular observations for Contract No. HY/2013/01 and Contract No. HY/2013/06 within Contract No. HY/2013/01 works area during the site inspections and corrective actions undertaken by the Contractor are described in Table 6.1 and Table 6.2.

Table 6.1      Summary of Environmental Site Inspections for Contract No. HY/2013/01

Date of Audit

Observations

Actions Taken by Contractor / Recommendation

Date of Observations Closed

7 February 2018

1.     General refuses were accumulated on G/F at the work area between Row 1 and Row 2.

1.   The general refuses were cleared on G/F at the work area between Row 1 and Row. 2

14 February 2018

14 February 2018

Nil

Nil.

Nil.

21 February 2018

1.     More than 20 cement bags were observed without impervious cover on the 1/F of Row 1.

1. The bags of cement were removed on the 1/F of Row 1.

28 February 2018

28 February 2018

1.   More than 20 cement bags were observed without impervious cover on the 1/F of Row 5.

1.   The Contractor was reminded to cover the bags of cement on the 1/F of Row 5.

Follow-up action undertaken by the Contractor will be inspected during the site inspection to be undertaken in March 2018.

 

Table 6.2        Summary of Environmental Site Inspections for Contract No. HY/2013/06 within Contract No. HY/2013/01 works area

Date of Audit

Observations

Actions Taken by Contractor / Recommendation

Date of Observations Closed

21 February 2018

No particular environmental issue was recorded during the site inspection.

Nil.

Nil.

28 February 2018

No particular environmental issue was recorded during the site inspection.

Nil.

Nil.

     Remark: The commencement date of Contract No. HY/2013/06 within Contract No. HY/2013/01 works area was 20 February 2018.

 

6.1.3      The Contractor has rectified all observations as identified during environmental site inspections during the reporting month.

6.2          Advice on the Solid and Liquid Waste Management Status

6.2.1      The Contractor registered as a chemical waste producer for the Contract. Sufficient numbers of receptacles were available for general refuse collection and sorting.

6.2.2      No marine sediment was generated in the reporting month. As informed by the Contractor in March 2016, the transfer of treated marine sediment to Contract no. HY/2010/02 has been discontinued since July 2015.

6.2.3      According to Contractor’s information, the quantity of metals generated as reported in Monthly EM&A Report of January 2018 are correct.

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

6.2.5      The Contractor was reminded that chemical waste should be properly treated and stored temporarily in designated chemical waste storage areas on site in accordance with the Code of Practice on the Packaging, Labelling and Storage of Chemical Wastes.

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

6.4          Implementation Status of Environmental Mitigation Measures

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

6.4.2      The Contractor conducts watering on all exposed soil within the Contract site and associated works areas 8 times per day when construction activities are being undertaken.

6.4.3      The marine traffic records and geographical plots of all the vessels tracks for the reporting month will be submitted by the Contractor to ER, ETL and IEC/ENPO within 3 weeks after the reporting month. The marine traffic records and geographical plot for January 2018 were not submitted during the reporting month. The Contractor was reminded to submit relevant records within 3 weeks after the reporting month. The marine traffic records and geographical plots for January 2018 and this reporting month will be checked in next reporting month.

6.4.4      Regarding the implementation of dolphin monitoring and protection measures (i.e. implementation of Dolphin Watching Plan, Dolphin Exclusion Zone and Silt Curtain integrity check), regular checking were conducted by the dolphin watcher(s) / dolphin observer(s) within the works area to ensure no dolphin was trapped by the enclosed silt curtain systems. No dolphin spotted within the enclosed silt curtain systems was reported and recorded during the reporting period. Silt curtain systems were also inspected timely in accordance to the submitted plan. All inspection records were kept properly.

6.4.5      Training was provided for barge operators in accordance with the Regular Marine Travel Routes Plan and relevant records were kept properly.

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

6.5          Summary of Exceedance of the Environmental Quality Performance Limit

6.5.1      For air quality monitoring, no Action and Limit Level exceedances of 1-hour and 24-hour TSP level were recorded at AMS2, AMS3B and AMS7B during the reporting month.

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

6.5.3      For construction noise, no Action and Limit Level exceedances were recorded at the monitoring station during the reporting month.

6.5.4      For water quality monitoring, no Action Level and Limit Level exceedances dissolved oxygen were recorded at mid-ebb tide and mid-flood tide during the reporting month.

6.5.5      No Action Level and Limit Level exceedances of turbidity were recorded at mid-ebb tide and mid-flood tide during the reporting month.

6.5.6      Two Action Level exceedances of suspended solid were recorded at mid-flood tide on 2 February 2018. No Action Level exceedances of suspended solid were recorded at mid-ebb tide and no Limit Level exceedances of suspended solid were recorded at mid-ebb tide and mid-flood tide during the reporting month.

6.5.7      As confirmed by the Contractor, no marine transportation and marine-based work was conducted on 2 February 2018. Therefore, it is concluded that the exceedances were not related the Contract.

6.5.8      For dolphin monitoring, dolphin surveys were conducted on 1, 6, 13 and 26 February 2018, A total of 269.42 km of survey effort was collected, with 94.6% of the total survey effort being conducted under favourable weather. 14 groups of 45 Chinese White Dolphins were sighted. Almost all dolphin sightings were made in NWL, while an exceptionally rare sighting was also made in NEL. (note: the last dolphin sighting made in NEL during HZMB-related surveys can be dated back to June 2016).

6.5.9      For dolphin monitoring during the quarter of December 2017 to February 2018, one limit level exceedance was recorded. The exceedance is under investigation and will be reported in the Quarterly EM&A Report for December 2017 to February 2018.

6.6          Summary of Complaints, Notification of Summons and Successful Prosecution

6.6.1      There was no complaint received in relation to the environmental impact during the reporting period. The details of cumulative statistics of Environmental Complaints are provide in Appendix L.

 

6.6.2      No notification of summons and prosecution was received during the reporting period.

6.6.3      Statistics on environmental complaints, notifications of summons and successful prosecutions are summarized in Appendix L.

7        Future Key Issues

7.1.1      As informed by the Contractor, the major construction activities for March 2018 are summarized in Table 7-1.

Table 7-1      Construction Activities for March 2018

Site Area

Description of Activities

Nature of Activities

For Contract No. HY/2013/01

WA1

Falsework stripping

Land-Based

WA1

Pipework and ductwork installation

Land-Based

WA1

Wet trade works

Land-Based

WA1

Dry trade works

Land-Based

WA1

MEP High Level Containment

Land-Based

WA1

Removal of temporary works

Land-Based

WA1

Hanging scaffolding removal

Land-Based

WA1

Southern toilet

Land-Based

WA1

MISC steelwork

Land-Based

WA1

Escalator installation

Land-Based

WA1

Glazed lift installation

Land-Based

WA1

Road and Kerbing

Land-Based

WA1

Testing and commissioning works

Land-Based

  For Contract No. HY/2013/06 within Contract No. HY/2013/01 works area

ELV & Server Room, Zone E PCB

Conduit installation and cabling

Land-Based

7.2          Environmental Site Inspection and Monitoring Schedule for the Coming Month

7.2.1      The tentative schedule for weekly site inspection and monitoring for March 2018 is provided in Appendix M.

8.1.1      The site preparation work of the Contract started on 26 September 2014 and the construction works of the Contract commenced on 6 October 2014. The construction works of the Contract No. HY/2013/06 within Contractor No. HY/2013/01 works area commenced on 20 February 2018. The forty-first Monthly EM&A Report summarizes findings of the EM&A works during the reporting period from 1 to 28 February 2018 (included the construction works of Contract No. HY/2013/06 within Contract No. HY/2013/01 works area).

8.1.2      For air quality monitoring, no Action and Limit Level exceedances of 1-hour and 24-hour TSP level were recorded at AMS2, AMS3B and AMS7B during the reporting month.

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

8.1.4      For construction noise, no Action and Limit Level exceedances were recorded at the monitoring station during the reporting month.

8.1.5      For water quality monitoring during the reporting month, no Action Level and Limit Level exceedance of dissolved oxygen were recorded at mid-ebb tide and mid-flood tide. No Action Level and Limit Level exceedance of turbidity was recorded at mid-ebb tide and mid-flood tide. Two Action Level exceedances of suspended solid were recorded at mid-flood tide on 2 February 2018. No Action Level exceedances of suspended solid were recorded at mid-flood tide and no Limit Level exceedances of suspended solid were recorded at mid-ebb tide and mid-flood tide. As confirmed by the Contractor, no marine transportation and marine-based work was conducted on 2 February 2018. Therefore, it is concluded that the exceedances were not related the Contract.

8.1.6      For dolphin monitoring, dolphin surveys were conducted on 1, 6, 13 and 26 February 2018, A total of 269.42 km of survey effort was collected, with 94.6% of the total survey effort being conducted under favourable weather. 14 groups of 45 Chinese White Dolphins were sighted. Almost all dolphin sightings were made in NWL, while an exceptionally rare sighting was also made in NEL. (note: the last dolphin sighting made in NEL during HZMB-related surveys can be dated back to June 2016).

8.1.7      For dolphin monitoring during the quarter of December 2017 to February 2018, one limit level exceedance was recorded. The exceedance is under investigation and will be reported in the Quarterly EM&A Report for December 2017 to February 2018.

8.1.8      Environmental site inspections for Contract No. HY/2013/01 were carried out on 7, 14, 21 and 28 February 2018; and site inspections for Contract No. HY/2013/06 within Contract No. HY/2013/01 works area were carried out on 21 and 28 February 2018. Recommendations on remedial actions were given to the Contractor for the deficiencies identified during the site inspections.

8.1.9      There was no complaint received in relation to the environmental impact during the reporting period.

8.1.10    No notification of summons and successful prosecution was received during the reporting period.