Expansion of Hong Kong
International Airport into a Three-Runway System

Construction Phase Quarterly EM&A Report No.8 (1 October to 31 December 2017)

April 2018

Contents

Abbreviations

Executive Summary

1 Introduction

1.1 Background

1.2 Scope of this Report

1.3 Project Organisation

1.4 Contact information for the Project

1.5 Summary of Construction Works

1.6 Summary of EM&A Programme Requirements

2 Environmental Monitoring and Auditing

2.1 Air Quality Monitoring

2.1.1 Action and Limit Levels

2.1.2 Summary of Monitoring Results

2.1.3 Conclusion

2.2 Noise Monitoring

2.2.1 Action and Limit Levels

2.2.2 Summary of Monitoring Results

2.2.3 Conclusion

2.3 Water Quality Monitoring

2.3.1 Action and Limit Levels

2.3.2 Summary of Monitoring Results

2.3.3 Conclusion

2.4 Waste Monitoring 

2.4.1 Action and Limit Levels

2.4.2 Summary of Monitoring Results

2.5 Chinese White Dolphin Monitoring

2.5.1 Action and Limit Levels

2.5.2 Summary of Monitoring Results

2.6 Weekly Environmental Site Inspection

2.7 Ecological Monitoring

2.8 Audit of SkyPier High Speed Ferries

2.9 Audit of Construction and Associated Vessels

2.10 Coral Post-Translocation Monitoring

2.11 Review of the Key Assumptions Adopted in the EIA Report

3 Report on Non-compliance, Complaints, Notifications of Summons and Prosecutions

3.1 Compliance with Other Statutory Environmental Requirements

3.2 Analysis and Interpretation of Complaints, Notification of Summons and Status of Prosecutions

3.2.1 Complaints

3.2.2 Notifications of Summons or Status of Prosecution

3.3 Cumulative Statistics

4 Conclusion and Recommendation

Tables

Table 1.1: Contact Information of Key Personnel 5

Table 1.2: Contact Information of the Project 8

Table 1.3: Summary of Status for All Environmental Aspects under the Updated EM&A Manual 8

Table 2.1: Impact Air Quality Monitoring Results  12

Table 2.2: Impact Noise Monitoring Results  13

Table 2.3: Monitoring Locations and Parameters for Impact Water Quality Monitoring  14

Table 2.4: Action and Limit Levels for General Water Quality Monitoring and Regular DCM Monitoring  15

Table 2.5: The Control and Impact Stations during Flood Tide and Ebb Tide for General Water Quality Monitoring and Regular DCM Monitoring  15

Table 2.6: Percentage of Monitoring Results Complying with Action and Limit Levels  16

Table 2.7: Summary of SS Results Triggering Action or Limit Level (Mid-Ebb Tide) 16

Table 2.8: Summary of SS Results Triggering Action or Limit Level (Mid-Flood Tide) 17

Table 2.9: Summary of Chromium Results Triggering Action or Limit Level (Mid-Ebb Tide) 17

Table 2.10: Summary of Nickel Results Triggering Action or Limit Level (Mid-Ebb Tide) 17

Table 2.11: Action and Limit Levels for Construction Waste  18

Table 2.12: Summary of Construction Waste Generated in the Reporting Period  19

Table 2.13: Land-based Theodolite Tracking Survey Station Details  19

Table 2.14: Derived Values of Action Level and Limit Level for Chinese White Dolphin Monitoring  20

Table 2.15: Summary of Number of CWD Sightings and Number of Dolphins for the Same Quarter Last Year, Previous Quarter, and Current Reporting Period  21

Table 2.16: Summary of Monthly and Running Quarterly STG and ANI of Chinese White Dolphin for Previous and Current Reporting Periods  23

Table 2.17: Summary of Photo Identification  27

Table 2.18: Summary of Survey Effort and CWD Group of Land-based Theodolite Tracking Survey  28

Table 2.19: Summary of the 5^th Post-Translocation Monitoring Surveys Completed in October 2017  33

Table 2.20: Summary of Sediment Trap Results  34

Table 2.21: Average Partial Mortality of Natural Corals at TMT, RT2 and RT4  35

Table 3.1: Statistics for Non-compliance, Complaints, Notifications of Summons and Prosecution  37

Table 3.2: Statistics for Breach of Action or Limit Level for the Environmental Monitoring  38

Figures

Figure 1.1- 1.2	Locations of Key Construction Activities in this reporting period
Figure 2.1	Locations of Air and Noise Monitoring Stations and Chek Lap Kok Wind Station
Figure 2.2	Locations of Water Quality Monitoring Stations
Figure 2.3	Vessel based Dolphin Monitoring Transects in Construction, Post-Construction, and Operation Phases
Figure 2.4	Land based Dolphin Monitoring Locations in Baseline and Construction Phases
Figure 2.5	Sightings Distribution of Chinese White Dolphins
Figure 2.6	Sighting Locations of Chinese White Dolphins with Different Group Sizes
Figure 2.7	Sighting Locations of Chinese White Dolphins Engaged in Different Behaviours
Figure 2.8	Sighting Locations of Mother-calf Pairs
Figure 2.9	Plots of First Sightings of All CWD Groups from Land-based Stations
Figure 2.10	Location for Passive Acoustic Monitoring
Figure 2.11	Locations of Sediment Trap Deployment

Appendices

Appendix A	Project Organization Chart
Appendix B	Environmental Mitigation Implementation Schedule (EMIS) for Construction Phase
Appendix C	Monitoring Results

Abbreviations

3RS	Three-Runway System
AAHK	Airport Authority Hong Kong
AECOM	AECOM Asia Company Limited
AFCD	Agriculture, Fisheries and Conservation Department
AIS	Automatic Information System
ANI	Encounter Rate of Number of Dolphins
APM	Automated People Mover
AW	Airport West
BHS	Baggage Handling System
CAP	Contamination Assessment Plan
CAR	Contamination Assessment Report
CTP	Coral Translocation Plan
CWD	Chinese White Dolphin
DCM	Deep Cement Mixing
DEZ	Dolphin Exclusion Zone
DO	Dissolved Oxygen
EAR	Ecological Acoustic Recorder
EIA	Environmental Impact Assessment
EM&A	Environmental Monitoring & Audit
EP	Environmental Permit
EPD	Environmental Protection Department
ET	Environmental Team
FCZ	Fish Culture Zone
HDD	Horizontal Directional Drilling
HKBCF	Hong Kong-Zhuhai-Macao Bridge Hong Kong Boundary Crossing Facilities
HKIA	Hong Kong International Airport
HSF	High Speed Ferry
IEC	Independent Environmental Checker
LKC	Lung Kwu Chau
MMHK	Mott MacDonald Hong Kong Limited
MMWP	Marine Mammal Watching Plan
MSS	Marine Surveillance System
MTRMP-CAV	Marine Travel Routes and Management Plan for Construction and Associated Vessel
NEL	Northeast Lantau
NWL	Northwest Lantau
PAM	Passive Acoustic Monitoring
PM	Partial Mortality
PVD	Prefabricated Vertical Drain
SC	Sha Chau
SCLKCMP	Sha Chau and Lung Kwu Chau Marine Park
SS	Suspended Solids
STG	Encounter Rate of Number of Dolphin Sightings
SWL	Southwest Lantau
The Project	The Expansion of Hong Kong International Airport into a Three-Runway System
The SkyPier Plan	Marine Travel Routes and Management Plan for High Speed Ferries of SkyPier
TMT	Tai Mo To
TSP	Total Suspended Particulates
WL	West Lantau
WMP	Waste Management Plan

Executive Summary

The “Expansion of Hong Kong International Airport into a Three-Runway System” (the Project) serves to meet the future air traffic demands at Hong Kong International Airport (HKIA). On 7 November 2014, the Environmental Impact Assessment (EIA) Report (Register No.: AEIAR-185/2014) for the Project was approved and an Environmental Permit (EP) (Permit No.: EP-489/2014) was issued for the construction and operation of the Project.

Airport Authority Hong Kong (AAHK) commissioned Mott MacDonald Hong Kong Limited (MMHK) to undertake the role of Environmental Team (ET) for carrying out the Environmental Monitoring & Audit (EM&A) works during the construction phase of the Project in accordance with the Updated EM&A Manual.

This is the 8^th Construction Phase Quarterly EM&A Report for the Project which summarizes the monitoring results and audit findings of the EM&A programme during the reporting period from 1 October 2017 to 31 December 2017.   

Key Activities in the Reporting Period

The key activities of the Project carried out in the reporting period included reclamation works and land-side works. Reclamation works included deep cement mixing (DCM) works, laying of sand blanket, seawall construction, and prefabricated vertical drain (PVD) installation. Land-side works included horizontal directional drilling (HDD) works, site office establishment, cable ducting works, concrete removal works, piling, and excavation works.

EM&A Activities Conducted in the Reporting Period

The EM&A programme was undertaken in accordance with the Updated EM&A Manual of the Project. Summary of the monitoring activities during this reporting period is presented as below:

Monitoring Activities	Number of Sessions
1-hour Total Suspended Particulates (TSP) air quality monitoring	96
Noise monitoring	65
Water quality monitoring	39
Vessel line-transect surveys for Chinese White Dolphin (CWD) monitoring	6
Land-based theodolite tracking survey effort for CWD monitoring	15
Terrestrial ecology monitoring	3
Coral post-translocation monitoring	1

Apart from the regular site inspections, audit of SkyPier High Speed Ferries (HSF), audit of the construction and associated vessels, and audit of the implementation of Marine Mammal Watching Plan (MMWP) and Dolphin Exclusion Zone (DEZ) Plan were also conducted in the reporting period. Based on the information including ET’s observations, records of Marine Surveillance System (MSS) and contractors’ site records, the environmental mitigation measures were properly implemented and the construction operation of the Project in the reporting period did not introduce adverse impacts to the sensitive receivers.

Snapshots of EM&A Activities in the Reporting Period

Photo 1: Land-Based Theodolite Tracking Survey for CWD at Sha Chau Conducted by ET	Photo 2: Sample Collection for Water Quality Monitoring Conducted by ET	Photo 3: Chemical Spill Drill Conducted by Contractor

Summary Findings of the EM&A Programme

Monitoring results of construction dust, construction noise, construction waste, CWD, and coral post-translocation did not trigger the corresponding Action and Limit Levels in the reporting period.

The water quality monitoring results for dissolved oxygen (DO), turbidity, and total alkalinity obtained during the reporting period complied with their corresponding Action and Limit Levels stipulated in the EM&A programme for triggering the relevant investigation and follow-up procedures under the programme if being triggered. For suspended solids (SS), chromium, and nickel, some of the testing results triggered the relevant Action or Limit Levels in the reporting period, and the corresponding investigations were conducted accordingly. The investigation findings concluded that the cases were not related to the Project; To conclude, the construction operation in the reporting period did not introduce adverse impact to all water quality sensitive receivers.

The monthly terrestrial ecology monitoring on Sheung Sha Chau observed that HDD works were conducted at the daylighting location and there was no encroachment upon the egretry area nor any significant disturbance to egrets foraging at Sheung Sha Chau by the works.

The key findings of the EM&A programme during the reporting period is summarized as below:

	Yes	No	Details	Analysis / Recommendation / Remedial Actions
Breach of Limit Level^		√	No breach of Limit Level was recorded.	Nil
Breach of Action Level^		√	No breach of Action Level was recorded.	Nil
Complaints Received	√		A complaint on material dumping from construction vessel was received on 24 Nov 2017.	Contractor had provided adequate disposal facilities and arranged regular disposal.  No observation relating to illegal dumping was found during regular and ad-hoc site inspections.
Notification of any summons and status of prosecutions		√	No notification of summons or prosecution were received.	Nil
Changes that affect the EM&A		√	There was no change to the construction works that may affect the EM&A	Nil

Note:     

^ Only triggering of Action or Limit Level related to Project works is counted as Breach of Action or Limit Level.   

1 Introduction

1.1 Background

On 7 November 2014, the Environmental Impact Assessment (EIA) Report (Register No.: AEIAR-185/2014) for the “Expansion of Hong Kong International Airport into a Three-Runway System” (the Project) was approved and an Environmental Permit (EP) (Permit No.: EP-489/2014) was issued for the construction and operation of the Project.

Airport Authority Hong Kong (AAHK) commissioned Mott MacDonald Hong Kong Limited (MMHK) to undertake the role of Environmental Team (ET) for carrying out the Environmental Monitoring & Audit (EM&A) works during the construction phase of the Project in accordance with the Updated EM&A Manual (the Manual) submitted under EP Condition 3.1[1]. AECOM Asia Company Limited (AECOM) was employed by AAHK as the Independent Environmental Checker (IEC) for the Project.

The Project covers the expansion of the existing airport into a three-runway system (3RS) with key project components comprising land formation of about 650 ha and all associated facilities and infrastructure including taxiways, aprons, aircraft stands, a passenger concourse, an expanded Terminal 2, all related airside and landside works and associated ancillary and supporting facilities. The existing submarine aviation fuel pipelines and submarine power cables also require diversion as part of the works.

Construction of the Project is to proceed in the general order of diversion of the submarine aviation fuel pipelines, diversion of the submarine power cables, land formation, and construction of infrastructure, followed by construction of superstructures.

The updated overall phasing programme of all construction works was presented in Appendix A of the Construction Phase Monthly EM&A Report No. 7 and the contract information was presented in Appendix A of the Construction Phase Monthly EM&A Report No. 22.

1.2 Scope of this Report

This is the 8^th Construction Phase Quarterly EM&A Report for the Project which summarizes the key findings of the EM&A programme during the reporting period from 1 October 2017 to 31 December 2017.

1.3 Project Organisation

The Project’s organisation structure is provided in Appendix A. Contact details of the key personnel have been updated and provided in and Table 1.1.

Table 1.1: Contact Information of Key Personnel

Party	Position	Name	Telephone
Project Manager’s Representative (Airport Authority Hong Kong)	Principal Manager, Environment	Lawrence Tsui	2183 2734
Environmental Team (ET) (Mott MacDonald Hong Kong Limited)	Environmental Team Leader	Terence Kong	2828 5919
	Deputy Environmental Team Leader	Heidi Yu	2828 5704
	Deputy Environmental Team Leader	Keith Chau	2972 1721
Independent Environmental Checker (IEC) (AECOM Asia Company Limited)	Independent Environmental Checker	Jackel Law	3922 9376
	Deputy Independent Environmental Checker	Roy Man	3922 9376

Advanced Works:
Contract P560(R) Aviation Fuel Pipeline Diversion Works (Langfang Huayuan Mechanical and Electrical Engineering Co., Ltd.)	Project Manager	Wei Shih	2117 0566
	Environmental Officer	Lyn Liu	5172 6543

Deep Cement Mixing (DCM) Works:
Contract 3201 DCM (Package 1) (Penta-Ocean-China State-Dong-Ah Joint Venture)	Project Director	Tsugunari Suzuki	9178 9689
	Environmental Officer	Alan Tam	6119 3107
Contract 3202 DCM (Package 2) (Samsung-BuildKing Joint Venture)	Project Manager	Ilkwon Nam	9643 3117
	Environmental Officer	Dickson Mak	9525 8408
Contract 3203 DCM (Package 3) (Sambo E&C Co., Ltd.)	Project Manager	Eric Kan	9014 6758
	Environmental Officer	David Hung	9765 6151
Contract 3204 DCM (Package 4) (CRBC-SAMBO Joint Venture)	Project Manager	Kyung-Sik Yoo	9683 8697
	Environmental Officer	Kanny Cho	6799 8226
Contract 3205 DCM (Package 5) (Bachy Soletanche - Sambo Joint Venture)	Deputy Project Director	Min Park	9683 0765
	Environmental Officer	Margaret Chung	9130 3696

Reclamation Works:
Contract 3206 (ZHEC-CCCC-CDC Joint Venture)	Project Manager	Kim Chuan Lim	3693 2288
	Environmental Officer	Kwai Fung Wong	3693 2252

Airfield Works:
Contract 3301 North Runway Crossover Taxiway (FJT-CHEC-ZHEC Joint Venture)	Project Manager	Kin Hang Chung	9412 1386

Terminal 2 Expansion Works:
Contract 3501 Antenna Farm and Sewage Pumping Station (Build King Construction Ltd.)	Project Manager	Osbert Sit	9079 7030
	Environmental Officer	Kelvin Cheung	9305 6081
Contract 3502 Terminal 2 APM Depot Modification Works (Build King Construction Ltd.)	Project Manager	Kivin Cheng	9380 3635
	Environmental Officer	Chun Pong Chan	9187 7118

Automated People Mover (APM) Works:
Contract 3602 Existing APM System Modification Works (Niigata Transys Co., Ltd.)	Project Manager	Kunihiro Tatecho	9755 0351
	Environmental Officer	Arthur Wong	9170 3394

Airport Support Infrastructure and Logistic Works:
Contract 3801 APM and BHS Tunnels on Existing Airport Island (China State Construction Engineering (Hong Kong) Ltd.)	Project Manager	Tony Wong	9642 8672
	Environmental Officer	Fredrick Wong	9842 2703

1.4 Contact information for the Project

The contact information for the Project is provided in Table 1.2. The public can contact us through the following channels if they have any queries and comments on the environmental monitoring data and project related information.

Table 1.2: Contact Information of the Project

Channels	Contact Information
Hotline	3908 0354
Email	env@3rsproject.com
Fax	3747 6050
Postal Address	Airport Authority Hong Kong HKIA Tower 1 Sky Plaza Road Hong Kong International Airport Lantau Hong Kong Attn: Environmental Team Leader Mr Terence Kong c/o Mr Lawrence Tsui (TRD)

1.5 Summary of Construction Works

The key activities of the Project carried out in the reporting period included reclamation works and land-side works. Reclamation works included deep cement mixing (DCM) works, laying of sand blanket, seawall construction, and prefabricated vertical drain (PVD) installation. Land-side works included horizontal directional drilling (HDD) works, site office establishment, cable ducting works, concrete removal works, piling, and excavation works.

The locations of the works areas are presented in Figure 1.1 to Figure 1.2.

1.6 Summary of EM&A Programme Requirements

The status for all environmental aspects is presented in Table 1.3. The EM&A requirements remained unchanged during the reporting period.

Table 1.3: Summary of Status for All Environmental Aspects under the Updated EM&A Manual

Parameters	EM&A Requirements	Status
Air Quality
Baseline Monitoring	At least 14 consecutive days before commencement of construction work	The baseline air quality monitoring result has been reported in Baseline Monitoring Report and submitted to EPD under EP Condition 3.4.
Impact Monitoring	At least 3 times every 6 days	On-going
Noise
Baseline Monitoring	Daily for a period of at least two weeks prior to the commencement of construction works	The baseline noise monitoring result has been reported in Baseline Monitoring Report and submitted to EPD under EP Condition 3.4.
Impact Monitoring	Weekly	On-going
Water Quality
General Baseline Water Quality Monitoring for reclamation, water jetting and field joint works	Three days per week, at mid-flood and mid-ebb tides, for at least four weeks prior to the commencement of marine works.	The baseline water quality monitoring result has been reported in Baseline Water Quality Monitoring Report and submitted to EPD under EP Condition 3.4.
General Impact Water Quality Monitoring for reclamation, water jetting and field joint works	Three days per week, at mid-flood and mid-ebb tides.	On-going
Initial Intensive Deep Cement Mixing (DCM) Water Quality Monitoring	At least four weeks	The Initial Intensive DCM Monitoring Report was submitted and approved by EPD in accordance with the Detailed Plan on DCM.
Regular DCM Water Quality Monitoring	Three times per week until completion of DCM works.	On-going
Waste Management
Waste Monitoring	At least weekly	On-going
Land Contamination
Supplementary Contamination Assessment Plan (CAP)	At least 3 months before commencement of any soil remediation works.	The Supplementary CAP was submitted and approved by EPD pursuant to EP condition 2.20.
Contamination Assessment Report (CAR) for Golf Course	CAR to be submitted for golf course first; programme for submission of supplementary CAR at the other areas to be agreed.	The CAR for Golf Course was submitted to EPD.
Terrestrial Ecology
Pre-construction Egretry Survey Plan	Once per month in the breeding season between April and July, prior to the commencement of HDD drilling works.	The Egretry Survey Plan was submitted and approved by EPD under EP Condition 2.14.
Ecological Monitoring	Monthly monitoring during the HDD construction works period from August to March.	On-going
Marine Ecology
Pre-Construction Phase Coral Dive Survey	Prior to marine construction works	The Coral Translocation Plan was submitted and approved by EPD under EP Condition 2.12.
Coral Translocation	-	The coral translocation was completed on 5 January 2017.
Post-translocation Monitoring	As per an enhanced monitoring programme based on the Coral Translocation Plan	On-going
Chinese White Dolphins (CWD)
Baseline Monitoring	6 months of baseline surveys before the commencement of land formation related construction works. Vessel line transect surveys: Two full surveys per month; Land-based theodolite tracking surveys: Two days per month at the Sha Chau station and two days per month at the Lung Kwu Chau station; and Passive Acoustic Monitoring (PAM): For the whole duration of baseline period.	Baseline CWD results were reported in the CWD Baseline Monitoring Report and submitted to EPD in accordance with EP Condition 3.4.
Impact Monitoring	Vessel line transect surveys: Two full surveys per month; Land-based theodolite tracking surveys: One day per month at the Sha Chau station and one day per month at the Lung Kwu Chau station; and PAM: For the whole duration for land formation related construction works.	On-going
Landscape and Visual
Baseline Monitoring	One-off survey within the Project site boundary prior to commencement of any construction works	The baseline landscape & visual monitoring result has been reported in Baseline Monitoring Report and submitted to EPD under EP Condition 3.4.
Impact Monitoring	Weekly	On-going
Environmental Auditing
Regular site inspection	Weekly	On-going
Marine Mammal Watching Plan (MMWP) implementation measures	Monitor and check	On-going
DEZ Plan implementation measures	Monitor and check	On-going
SkyPier High Speed Ferries (HSF) implementation measures	Monitor and check	On-going
Construction and Associated Vessels implementation measures	Monitor and check	On-going
Complaint Hotline and Email Channel	Construction phase	On-going
Environmental Log Book	Construction phase	On-going

Taking into account the construction works in the reporting period, impact monitoring of air quality, noise, water quality, waste management, terrestrial ecology, landscape and visual, and CWD were carried out in the reporting period. Upon completion of coral translocation in January 2017, a summary of the ensuing post-translocation monitoring is reported quarterly.

The EM&A programme also involved weekly site inspections and related auditing conducted by ET for the checking of implementation of required environmental mitigation measures recommended in the approved EIA Report. To promote the environmental awareness and enhance the environmental performance of the contractors, environmental briefings, environmental trainings, and regular environmental management meetings were conducted during the reporting period which are summarized as below:

● Five dolphin observer trainings provided by ET;

● Nine skipper trainings provided by ET;

● Three environmental briefings on EP and EM&A requirements of the 3RS provided by ET;

● One environmental briefing on Control of Marine Dumping provided by EPD; and

● 27 occasions of environmental management meetings on EM&A matters.

The EM&A programme has been following the recommendations presented in the approved EIA Report and the Manual. A summary of implementation status of the environmental mitigation measures for the construction phase of the Project during the reporting period is provided in Appendix B.

2 Environmental Monitoring and Auditing

2.1 Air Quality Monitoring

Impact 1-hour Total Suspended Particulates (TSP) monitoring was conducted three times every six days at two representative monitoring stations during the reporting period. The locations of monitoring stations are described in Table 2.1 and presented in Figure 2.1.

2.1.1 Action and Limit Levels

The Action and Limit Levels of the air quality monitoring stipulated in the EM&A programme for triggering the relevant investigation and follow-up procedures under the programme are provided in Table 2.1 for reference.

2.1.2 Summary of Monitoring Results

The air quality monitoring results in the reporting period are summarized in Table 2.1 and the graphical plot is presented in Appendix C.

Table 2.1: Impact Air Quality Monitoring Results

Monitoring Station	Location	1-hr TSP Concentration Range (µg/m^3)	Action Level (mg/m^3)	Limit Level (mg/m^3)
AR1A	Man Tung Road Park	12 – 119	306	500
AR2	Village House at Tin Sum	14 – 276	298

The monitoring results complied with the corresponding Action and Limit Levels at all monitoring stations in the reporting period.

The weather varied from sunny to rainy during the reporting period. Wind direction was mainly northeast or northwest in the reporting period.

2.1.3 Conclusion

The major dust sources during the reporting period were observed to be local air pollution and nearby traffic emissions. It is considered that the monitoring work in the reporting period was effective and there was no adverse impact attributable to the works of the Project.

2.2 Noise Monitoring

Impact noise monitoring was conducted at five representative monitoring stations once per week during 0700 and 1900 in the reporting period. The locations of monitoring stations are described in Table 2.2 and presented in Figure 2.1.

2.2.1 Action and Limit Levels

The Action and Limit Levels of the noise monitoring stipulated in the EM&A programme for triggering the relevant investigation and follow-up procedures under the programme are provided in Table 2.2 for reference.

2.2.2 Summary of Monitoring Results

The noise monitoring results in the reporting period are summarized in Table 2.2 and the graphical plot is presented in Appendix C.

Table 2.2: Impact Noise Monitoring Results

Monitoring Station	Location	Noise Level Range, Leq (30 mins) (dB(A))	Action Level	Limit Level
NM1A	Man Tung Road Park	71 – 73	When one documented complaint is received from any one of the sensitive receivers	75 dB(A)
NM3A	Site Office	57 – 63		75 dB(A)
NM4	Ching Chung Hau Po Woon Primary School	60 – 66		65dB(A) / 70 dB(A)^(i)
NM5	Village House in Tin Sum	53 – 66		75 dB(A)
NM6	House No. 1, Sha Lo Wan	66 – 73		75 dB(A)
Note: ^(i) Reduced to 70dB(A) for school and 65dB(A) during school examination periods at NM4.

The monitoring results complied with the corresponding Action and Limit Levels at all monitoring stations in the reporting period.

2.2.3 Conclusion

The major noise sources during the reporting period were observed to be road traffic and helicopters at NM1A, aircrafts and helicopters at NM3A, helicopters and construction activities from a nearby school at NM4, aircrafts and helicopters at NM5, and aircrafts, helicopters, and marine vessels at NM6. It is considered that the monitoring work in the reporting period was effective and there was no adverse impact attributable to the works of the Project.

2.3 Water Quality Monitoring

During the reporting period, water quality monitoring was conducted three days per week, at mid-flood and mid-ebb tides, at a total of 22 water quality monitoring stations, comprising 12 impact (IM) stations, 7 sensitive receiver (SR) stations, and 3 control (C) stations in the vicinity of the water quality sensitive receivers around the airport island in accordance with the Manual. The purpose of water quality monitoring at the IM stations is to promptly capture any potential water quality impacts from the Project before the impacts could become apparent at sensitive receivers (represented by the SR stations). Table 2.3 describes the details of the monitoring stations. Figure 2.2 shows the locations of the monitoring stations.

Table 2.3: Monitoring Locations and Parameters for Impact Water Quality Monitoring

Monitoring Stations	Description	Coordinates		Parameters
		Easting	Northing
C1	Control Station	804247	815620
C2	Control Station	806945	825682
C3^(3)	Control Station	817803	822109
IM1	Impact Station	806458	818351	DO, pH, Temperature, Salinity, Turbidity, SS, Total Alkalinity, Heavy Metals^(2)
IM2	Impact Station	806193	818852
IM3	Impact Station	806019	819411
IM4	Impact Station	805039	819570
IM5	Impact Station	804924	820564
IM6	Impact Station	805828	821060
IM7	Impact Station	806835	821349
IM8	Impact Station	807838	821695
IM9	Impact Station	808811	822094
IM10	Impact Station	809838	822240
IM11	Impact Station	810545	821501
IM12	Impact Station	811519	821162
SR1^(1)	Future Hong Kong-Zhuhai-Macao Bridge Hong Kong Boundary Crossing Facilities (HKBCF) Seawater Intake for cooling	812586	820069	DO, pH, Temperature, Salinity, Turbidity, SS
SR2^(3)	Planned marine park / hard corals at The Brothers / Tai Mo To	814166	821463	DO, pH, Temperature, Salinity, Turbidity, SS, Total Alkalinity, Heavy Metals^(2)(4)
SR3	Sha Chau and Lung Kwu Chau Marine Park / fishing and spawning grounds in North Lantau	807571	822147	DO, pH, Temperature, Salinity, Turbidity, SS
SR4A	Sha Lo Wan	807810	817189
SR5A	San Tau Beach SSSI	810696	816593
SR6	Tai Ho Bay, Near Tai Ho Stream SSSI	814663	817899
SR7	Ma Wan Fish Culture Zone (FCZ)	823742	823636
SR8^(5)	Seawater Intake for cooling at Hong Kong International Airport (East)	811418 (from July 2017 onwards)	820246

Notes:

(1) The seawater intakes of SR1 for the future HKBCF is not yet in operation, hence no water quality impact monitoring was conducted at this station. The future permanent location for SR1 during impact monitoring is subject to finalisation after the HKBCF seawater is commissioned.

(2) Details of selection criteria for the two heavy metals for regular DCM monitoring refer to the Detailed Plan on Deep Cement Mixing available on the dedicated 3RS website (http://env.threerunwaysystem.com/en/ep-submissions.html).  DCM specific water quality monitoring parameters (total alkalinity and heavy metals) were only conducted at C1 to C3, SR2, and IM1 to IM12.

(3) According to the Baseline Water Quality Monitoring Report, C3 station is not adequately representative as a control station of impact/ SR stations during the flood tide. The control reference has been changed from C3 to SR2 from 1 September 2016 onwards.

(4) Total alkalinity and heavy metals results are collected at SR2 as a control station for regular DCM monitoring.

(5) The monitoring location for SR8 is subject to further changes due to silt curtain arrangements and the progressive relocation of this seawater intake.

2.3.1 Action and Limit Levels

The Action and Limit Levels for general water quality monitoring and regular DCM monitoring stipulated in the EM&A programme for triggering the relevant investigation and follow-up procedures under the programme are presented in Table 2.4. The control and IM stations during flood tide and ebb tide for general water quality monitoring and regular DCM monitoring are presented in Table 2.5.

Table 2.4: Action and Limit Levels for General Water Quality Monitoring and Regular DCM Monitoring

Parameters	Action Level		Limit Level
Action and Limit Levels for general water quality monitoring and regular DCM monitoring (excluding SR1& SR8)
DO in mg/L (Surface, Middle & Bottom)	Surface and Middle 4.5 mg/L		Surface and Middle 4.1 mg/L 5 mg/L for Fish Culture Zone (SR7) only
	Bottom 3.4 mg/L		Bottom 2.7 mg/L
SS in mg/L	23	or 120% of upstream control station at the same tide of the same day, whichever is higher	37	or 130% of upstream control station at the same tide of the same day, whichever is higher
Turbidity in NTU	22.6		36.1
Total Alkalinity in ppm	95		99
Representative Heavy Metals for regular DCM monitoring (Chromium)	0.2		0.2
Representative Heavy Metals for regular DCM monitoring (Nickel)	3.2		3.6
Action and Limit Levels SR1
SS (mg/l)	To be determined prior to its commissioning		To be determined prior to its commissioning
Action and Limit Levels SR8
SS (mg/l)	52		60

Notes:

1. For DO measurement, Action or Limit Level is triggered when monitoring result is lower than the limits.

2. For parameters other than DO, Action or Limit Level of water quality results is triggered when monitoring results is higher than the limits.

3. Depth-averaged results are used unless specified otherwise.

4. Details of selection criteria for the two heavy metals for regular DCM monitoring refer to the Detailed Plan on Deep Cement Mixing available on the dedicated 3RS website http://env.threerunwaysystem.com/en/ep-submissions.html)

5. The Action and Limit Levels for the two representative heavy metals chosen will be the same as that for the intensive DCM monitoring.

Table 2.5: The Control and Impact Stations during Flood Tide and Ebb Tide for General Water Quality Monitoring and Regular DCM Monitoring

Control Station	Impact Stations
Flood Tide
C1	IM1, IM2, IM3, IM4, IM5, IM6, IM7, IM8, SR3
SR2^^1	IM7, IM8, IM9, IM10, IM11, IM12, SR1A, SR3, SR4A, SR5A, SR6, SR8
Ebb Tide
C1	SR4A, SR5A, SR6
C2	IM1, IM2, IM3, IM4, IM5, IM6, IM7, IM8, IM9, IM10, IM11, IM12, SR1A, SR2, SR3, SR7, SR8

^{^1} As per findings of Baseline Water Quality Monitoring Report, the control reference has been changed from C3 to SR2 from 1 Sep 2016 onwards.

2.3.2 Summary of Monitoring Results

The summary or results complying with their corresponding Action and Limit Levels in the reporting period are presented in Table 2.6. It should be noted that Severe Typhoon Khanun hit Hong Kong from 14 to 16 Oct 2017 and the water quality monitoring results in that period might be affected by the inclement weather

Table 2.6: Percentage of Monitoring Results Complying with Action and Limit Levels

	DO (Surface and Middle)	DO (Bottom)	SS	Turbidity	Alkalinity	Chromium	Nickel
Oct 2017	100%	100%	98.75%	100%	100%	100%	100%
Nov 2017	100%	100%	98.96%	100%	100%	99.36%	99.68%
Dec 2017	100%	100%	97.09%	100%	100%	100%	100%
Overall	100%	100%	98.27%	100%	100%	99.79%	99.89%
Note: The percentages are calculated by dividing the number of depth-averaged results complying with their corresponding Action and Limit Level by the total number of depth-averaged results.

The monitoring results for DO, turbidity, and total alkalinity obtained in the reporting period complied with their corresponding Action and Limit Levels stipulated in the EM&A programme for triggering the relevant investigation and follow-up procedures under the programme if being triggered. For SS, chromium and nickel, some of the testing results triggered the relevant Action or Limit Levels in the reporting period, and the corresponding investigations were conducted accordingly.

Summaries of results triggering Action or Limit Level for SS, chromium, and nickel are presented in Table 2.7 to Table 2.10. Details of the investigation findings are presented in Construction Phase Monthly EM&A Report No. 22, 23, and 24, which concluded that all results triggering the Action or Limit Level were not related to the Project.

Table 2.7: Summary of SS Results Triggering Action or Limit Level (Mid-Ebb Tide)

IM1

IM2

IM3

IM4

IM5

IM6

IM7

IM8

IM9

IM10

IM11

IM12

SR2

SR3

SR4A

SR5A

SR6

SR7

SR8

17/10/2017

19/10/2017

D

24/10/2017

D

09/12/2017

D

D

D

D

16/12/2017

21/12/2017

D

No. of result triggering Action or Limit Level

1

1

1

2

3

2

0

0

1

0

2

0

0

0

0

0

0

0

0

Table 2.8: Summary of SS Results Triggering Action or Limit Level (Mid-Flood Tide)

IM1

IM2

IM3

IM4

IM5

IM6

IM7

IM8

IM9

IM10

IM11

IM12

SR3

SR4A

SR5A

SR6

SR7

SR8

24/10/2017

04/11/2017

D

07/11/2017

23/11/2017

D

07/12/2017

D

D

16/12/2017

D

21/12/2017

23/12/2017

D

No. of result triggering Action or Limit Level

1

0

1

1

2

1

0

1

1

1

2

0

0

0

0

0

1

0

Table 2.9: Summary of Chromium Results Triggering Action or Limit Level (Mid-Ebb Tide)

	IM1	IM2	IM3	IM4	IM5	IM6	IM7	IM8	IM9	IM10	IM11	IM12
25/11/2017									D	D
No. of result triggering Action or Limit Level	0	0	0	0	0	0	0	0	1	1	0	0

Table 2.10: Summary of Nickel Results Triggering Action or Limit Level (Mid-Ebb Tide)

	IM1	IM2	IM3	IM4	IM5	IM6	IM7	IM8	IM9	IM10	IM11	IM12
18/11/2017								D
No. of result triggering Action or Limit Level	0	0	0	0	0	0	0	1	0	0	0	0

Note: The monitoring results on monitoring dates not presented in the above tables did not trigger their corresponding Action or Limit Levels. Detailed results are presented in Appendix C.

Legend:
	Result complied with corresponding Action and Limit Levels
	Result triggered the Action Level at monitoring station located upstream of the Project based on dominant tidal flow
D	Result triggered the Action Level at monitoring station located downstream of the Project based on dominant tidal flow
D	Result triggered the Limit Level at monitoring station located downstream of the Project based on dominant tidal flow
	Upstream station with respect to the Project during the respective tide based on dominant tidal flow

2.3.3 Conclusion

In the reporting period, it is noted that most monitoring results complied with their corresponding Action and Limit Levels, while minor number of results triggered their corresponding Action or Limit Level, and investigations were conducted accordingly. Based on the findings presented in Construction Phase Monthly EM&A Report No. 22, 23, and 24, all results that triggered the corresponding Action or Limit Level were not related to the Project; hence, the Project did not introduce adverse impact to all water quality sensitive receivers. All required actions under the Event and Action Plan had been followed.

Nevertheless, the non-project related triggers have been attended to and have initiated corresponding action and measures. As part of the EM&A programme, the construction methods and mitigation measures for water quality will continue to be monitored and opportunities for further enhancement will continue to be explored and implemented where possible, to strive for better protection of water quality and the marine environment. 

In the meantime, the contractors were reminded to implement and maintain all mitigation measures during weekly site inspection. These include maintaining the silt curtain for sand blanket laying properly and maintaining the levels of materials on barges to avoid overflow as recommended in the Manual.

2.4 Waste Monitoring

In accordance with the Manual, the waste generated from construction activities was audited once per week to determine if wastes were being managed in accordance with the Waste Management Plan (WMP) prepared for the Project, contract-specific WMP, and any statutory and contractual requirements. All aspects of waste management including waste generation, storage, transportation, and disposal were assessed during the audits.

2.4.1 Action and Limit Levels

The Action and Limit Levels of the construction waste are provided in Table 2.11.

Table 2.11: Action and Limit Levels for Construction Waste

Monitoring Stations	Action Level	Limit Level
Construction Area	When one valid documented complaint is received	Non-compliance of the WMP, contract-specific WMPs, any statutory and contractual requirements

2.4.2 Summary of Monitoring Results

Based on updated contractors’ information, summary of construction waste generated in the reporting period is presented in Table 2.12.

The monitoring results complied with the corresponding Action and Limit Levels in the reporting period.

Table 2.12: Summary of Construction Waste Generated in the Reporting Period

	Excavated Material (m^3)^1	C&D^2 Material Reused in the Project (m^3)	C&D Material Disposed of as Public Fill (m^3)	Chemical Waste (kg)	Chemical Waste (L)	General Refuse (tonne)^3
Oct 2017	371	84	53	30	11,400	149
Nov 2017	380	530	101	105	3,100	193
Dec 2017	1,381	1,320	269	240	7,600	246
Total	2,132	1,934	423	375	22,100	589
Notes: 1. The excavated materials were temporarily stored at stockpiling area and will be reused in the Project. 2. C&D refers to Construction and Demolition. 3. Figures are rounded off to the nearest tonne. 4. Paper, plastics, and metals were recycled in the reporting period.

Weekly waste monitoring of the Project construction works was carried out by the ET in the reporting period to check and monitor the implementation of proper waste management practices during the reporting period.

Recommendations were provided during monitoring, including provision and maintenance of spill kits and drip trays, provision of proper storage area for general refuse and chemical waste, as well as regular segregation and removal of waste. The contractors had taken actions to implement the recommended measures.

2.5 Chinese White Dolphin Monitoring

CWD monitoring was conducted by vessel line transect survey at a frequency of two full surveys per month, supplemented by land-based theodolite tracking survey and PAM. The frequency of the land-based theodolite tracking survey during the construction phase was one day per month at both Sha Chau (SC) and Lung Kwu Chau (LKC) stations as stipulated in the Manual. Additional land-based theodolite tracking survey at the SC station and the LKC station (in total 2 tracking days and 3 tracking days per month at respective stations) were also conducted on a voluntary basis to collect supplementary information for the project. Monitoring was fully completed in the reporting period. The vessel survey transect lines matched those proposed in the Manual and transect lines are consistent with those used in the Agriculture, Fisheries and Conservation Department (AFCD) long-term CWD monitoring programme. The transect locations of CWD monitoring by vessel line transect survey conducted from October to December 2017 are shown in Figure 2.3, whilst the land-based theodolite tracking survey stations are described in Table 2.13 and depicted in Figure 2.4. The location of the PAM device is shown in Figure 2.10.

Table 2.13: Land-based Theodolite Tracking Survey Station Details

Stations	Location	Geographical Coordinates	Station Height (m)	Approximate Tracking Distance (km)
D	Sha Chau (SC)	22° 20’ 43.5” N 113° 53’ 24.66” E	45.66	2
E	Lung Kwu Chau (LKC)	22° 22’ 44.83” N 113° 53’ 0.2” E	70.40	3

2.5.1 Action and Limit Levels

The Action Level and Limit Levels for CWD monitoring were formulated by an action response approach using the running quarterly dolphin encounter rates (STG and ANI) derived from baseline monitoring data, as presented in the CWD Baseline Monitoring Report. The derived values of Action and Limit Levels for CWD monitoring are shown in Table 2.14.

Table 2.14: Derived Values of Action Level and Limit Level for Chinese White Dolphin Monitoring

	NEL, NWL, AW, WL and SWL as a Whole
Action Level	Running quarterly STG < 1.86 & ANI < 9.35
Limit Level	Two consecutive running quarterly (3-month) STG < 1.86 & ANI < 9.35

2.5.2 Summary of Monitoring Results

2.5.2.1 Vessel Line Transect Survey

Survey Effort

During the reporting period, six complete sets of vessel line transect surveys were conducted from October to December 2017 to cover all transects in Northeast Lantau (NEL), Northwest Lantau (NWL), Airport West (AW), West Lantau (WL) and Southwest Lantau (SWL) survey areas twice per month.

A total of around 1,369 km of survey effort was collected from these surveys, with around 81.2% of the total survey effort being conducted under favourable weather condition (i.e. Beaufort Sea State 3 or below with favourable visibility). Details of the survey effort data are presented in Appendix C.

CWD Sighting

From October to December 2017, there were in total 47 groups with 168 dolphins sighted (Table 2.19). Amongst the sightings of CWDs, 45 groups with 164 dolphins were made during on-effort searches during favourable weather conditions.

When breaking down the sightings by survey areas, 13 sightings with 62 dolphins, two sightings with 10 dolphins, 24 sightings with 78 dolphins and 8 sightings with 18 dolphins were recorded in NWL, AW, WL and SWL survey areas respectively during the current reporting period. No CWD was sighted in NEL survey area.

Compared to last quarter (i.e. July to September 2017), there are observable declines in CWD sightings in WL and SWL (43% and 76% decline in WL and SWL respectively). Taking account of the number of dolphins as recorded, there are 33% and 83% decline in WL and SWL respectively.

However, the number of CWD sightings in NWL (including AW) remains relative steady and even with an increase of 76% in terms of number of dolphins compared with last quarter.

Comparison between the current reporting quarter and the same quarter of last year (i.e. October to December 2016) revealed that the overall number of CWD sightings has a decline of around 20%. However, there is an increase of about 8% in terms of number of dolphins.

Table 2.15 below shows the comparison of the numbers of sightings and dolphins amongst the current reporting period, last quarter, and the same quarter of year 2016.

Table 2.15: Summary of Number of CWD Sightings and Number of Dolphins for the Same Quarter Last Year, Previous Quarter, and Current Reporting Period

	October to December 2016	July to September 2017	October to December 2017
NEL	0 (0)	0 (0)	0 (0)
NWL	18 (59)	16 (40)	13 (62)
AW	0 (0)	1 (1)	2 (10)
WL	25 (63)	42 (116)	24 (78)
SWL	16 (34)	34 (109)	8 (18)
Total	59 (156)	93 (266)	47 (168)

Note: Values in ( ) represent number of dolphins

Distribution of CWD sightings recorded from October to December 2017 are illustrated in Figure 2.5. In NWL, CWD sightings were mostly within and around Sha Chau and Lung Kwu Chau Marine Park (SCLKCMP) as well as the southwestern part of the survey area with two sightings recorded in close vicinity to the 3RS works area. In WL, the majority of the CWD sightings were located along the coastal waters from Tai O to Fan Lau, especially the waters around Tai O, Yi O and off Peaked Hill. While in SWL, CWD sightings mainly distributed in the coastal waters at Fan Lau Tung Wan and Lo Kei Wan. Details of the sighting data are presented in Appendix C.

Figure 2.5: Sightings Distribution of Chinese White Dolphins

Remarks: Please note that there are 47 pink circles on the map indicating the sighting locations of CWD. Some of them were very close to each other and therefore appear overlapped on this sighting distribution map.

Encounter Rate

The dolphin encounter rates for the number of dolphin sightings per 100 km survey effort (STG) and for the total number of dolphins per 100 km survey effort (ANI) in the whole survey area (i.e. NEL, NWL, AW, WL and SWL) for October, November and December 2017 are summarized in Table 2.16.

In this reporting period, the monthly encounter rates for STG and ANI both decrease from October to November 2017 followed by an increase in December 2017. Comparing with the previous reporting period, the running quarterly STG and ANI decrease from 6.68 to 4.05 and from 19.97 to 14.75 respectively.

Table 2.16: Summary of Monthly and Running Quarterly STG and ANI of Chinese White Dolphin for Previous and Current Reporting Periods

	Previous Reporting Period			Current Reporting Period
	Jul 17	Aug 17	Sep 17	Oct 17	Nov 17	Dec 17
Monthly STG	6.76	8.11	5.32	4.54	2.07	5.33
Monthly ANI	18.45	24.06	17.73	16.02	6.82	20.77
Running Quarterly STG	5.73	7.03	6.68	5.90	4.09	4.05
Running Quarterly ANI	20.95	20.30	19.97	19.05	13.91	14.75

Notes: For detailed calculations of encounter rates STG and ANI, please refer to the Construction Phase Monthly EM&A Report No. 22, 23 and 24.

Group Size

Between October and December 2017, the group size of CWDs ranged from 1 to 12 dolphins per group. The average group size of CWDs was 3.6 dolphins per group while that of the last quarter was 2.9. Medium-sized CWD groups (i.e. 3-9 dolphins) were dominant (i.e. 32 out of 47 sightings). There was only one CWD sighting with a large group size (i.e. 10 or more dolphins) in this reporting period, which was recorded in NWL.

In NWL and WL, medium group size of CWD sightings dominated in this reporting period. While in SWL, the number of small group size sightings (i.e. 1-2 dolphins) dominated. This finding is a contrast to the findings of previous reporting period in which NWL and WL were dominated by small-sized CWD sightings and SWL was dominated by medium-sized sighting. Sighting locations of CWD groups with different group sizes are depicted in Figure 2.6.

Figure 2.6: Sighting Locations of Chinese White Dolphins with Different Group Sizes

Remarks: Please note that there are 47 circles on the map indicating the sighting locations of CWD. Some of them were very close to each other and therefore appear overlapped on this sighting distribution map.

Activities and Association with Fishing Boats

During October to December 2017, 14 sightings of CWDs were sighted with feeding activities.  Amongst these 14 sightings of feeding CWDs, two were observed in association with operating gill netter in WL and SWL respectively, while one sighting was observed in association with operating shrimp trawler in WL. The numbers of sightings with feeding and association with operating fishing boats are similar to the last reporting period (i.e. 12 sightings involved feeding activities with two sightings observed in association with operating fish boat). Compared with the data in the same period of last year, there is a 30% decline of feeding activities (i.e. 20 sightings observed with feeding activities) while there were three sightings recorded in association with operating fishing boats. The sighting locations of CWDs engaged in different behaviours during the reporting period are illustrated in Figure 2.7.

Figure 2.7: Sighting Locations of Chinese White Dolphins Engaged in Different Behaviours

Mother-calf Pairs

From October to December 2017, 8 sightings of CWDs were recorded with the presence of mother-and-calf, mother-and-unspotted juvenile and/or mother-and-spotted juvenile pairs. The majority of these mother-calf pairs were sighted in WL. The sighting locations of mother-calf pairs are shown in Figure 2.8.

Figure 2.8: Sighting Locations of Mother-calf Pairs

Remarks: Please note that there are 8 pink circles on the map indicating the locations of the sightings with the presences of mother-and-calf, mother-and-unspotted juvenile and/or mother-and-spotted juvenile pairs. Some of them were very close to each other and therefore appear overlapped on this sighting distribution map.

Photo Identification

During October to December 2017, a total number of 61 different CWD individuals were identified altogether for 84 times. Re-sighting information of CWD individuals provides an initial idea of their range use and apparent connection between different areas around Lantau. Amongst these 61 different CWD individuals, 16 animals (i.e. NLMM002, NLMM004, NLMM027, NLMM028, NLMM037, SLMM014, SLMM018, SLMM028, SLMM030, WLMM001, WLMM019, WLMM026, WLMM027, WLMM065, WLMM066, WLMM107) were sighted for more than once.

Six individuals including SLMM014, SLMM018, SLMM030, WLMM001, WLMM026 and WLMM027 were re-sighted in different survey areas within this reporting period. Amongst these six animals, WLMM026 and WLMM027 have cross-area movement between NWL (including AW) and WL or SWL survey area. Whilst SLMM014, SLMM018 and WLMM001 have cross-area movement in WL and SWL. The most frequently re-sighted individuals were SLMM030, WLMM065 and WLMM066, all recorded for 4 times during this reporting period. SLMM030 has shown cross-area movement amongst NWL, WL and SWL, while WLMM065 and WLMM066 were only encountered in WL. The number of CWD individuals re-sighted for more than once and the number of CWD individuals showing cross-area movement are both fewer than last quarter (i.e. July to September 2017).

A summary of photo identification works is presented in Table 2.17. Representative photos of the 61 identified individuals and figures depicting the sighting locations of the aforementioned 16 re-sighted individuals recorded in this reporting period are presented Appendix C.

Table 2.17: Summary of Photo Identification

Individual ID	Date of sighting	Sighting Group No.	Area	Individual ID	Date of sighting	Sighting Group No.	Area
NLMM002	25-Oct-17	1	NWL	SLMM048	28-Dec-17	3	WL
	14-Dec-17	1	NWL	SLMM049	07-Dec-17	4	WL
NLMM004	06-Dec-17	5	NWL	SLMM052	28-Dec-17	8	SWL
	14-Dec-17	1	NWL	SLMM053	06-Dec-17	2	NWL
NLMM005	14-Dec-17	1	NWL	WLMM001	21-Nov-17	2	SWL
NLMM010	25-Oct-17	1	NWL		07-Dec-17	2	WL
NLMM011	15-Nov-17	1	NWL	WLMM007	07-Dec-17	4	WL
NLMM012	15-Nov-17	1	NWL	WLMM019	24-Oct-17	1	NWL
NLMM015	27-Oct-17	3	WL		25-Oct-17	1	NWL
NLMM016	07-Dec-17	3	WL	WLMM021	27-Oct-17	1	WL
NLMM019	21-Nov-17	1	AW	WLMM024	21-Nov-17	1	AW
NLMM027	25-Oct-17	1	NWL	WLMM026	26-Oct-17	1	WL
	14-Dec-17	2	NWL		06-Dec-17	3	NWL
NLMM028	25-Oct-17	1	NWL	WLMM027	26-Oct-17	1	WL
	14-Dec-17	2	NWL		06-Dec-17	3	NWL
NLMM033	25-Oct-17	2	NWL	WLMM030	25-Oct-17	2	NWL
NLMM037	15-Nov-17	1	NWL	WLMM049	06-Dec-17	5	NWL
	14-Dec-17