Contract No. HY/2011/03

Hong Kong-Zhuhai-Macao Bridge Hong Kong Link Road

Section between Scenic Hill and Hong Kong Boundary Crossing Facilities

Monthly EM&A Report No.58 (Jul 2017)

14 August 2017

Revision 1

Main Contractor Designer

Contents

Executive Summary

1...... Introduction. 1

1.1 Basic Project Information.. 1

1.2 Project Organisation.. 2

1.3 Construction Programme.. 2

1.4 Construction Works Undertaken During the Reporting Month.. 2

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

2.1 Monitoring Requirements. 4

2.2 Monitoring Equipment 4

2.3 Monitoring Locations. 4

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.. 9

3.5 Monitoring Methodology.. 10

3.6 Monitoring Schedule for the Reporting Month.. 10

3.7 Monitoring Results. 11

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

4.1 Monitoring Requirements. 12

4.2 Monitoring Equipment 13

4.3 Monitoring Parameters, Frequency and Duration.. 13

4.4 Monitoring Locations. 13

4.5 Monitoring Methodology.. 15

4.6 Monitoring Schedule for the Reporting Month.. 16

4.7 Monitoring Results. 16

5....... Dolphin Monitoring. 18

5.1 Monitoring Requirements. 18

5.2 Monitoring Methodology.. 18

5.3 Monitoring Results. 20

5.4 Reference.. 22

6....... Environmental Site Inspection and Audit 23

6.1 Site Inspection.. 23

6.2 Advice on the Solid and Liquid Waste Management Status. 24

6.3 Environmental Licenses and Permits. 24

6.4 Implementation Status of Environmental Mitigation Measures. 24

6.5 Summary of Exceedances of the Environmental Quality Performance Limit 25

6.6 Summary of Complaints, Notification of Summons and Successful Prosecution.. 25

7....... Future Key Issues. 26

7.1 Construction Programme for the Coming Months. 26

7.2 Environmental Monitoring Schedule for the Coming Month.. 26

8....... Conclusions. 27

8.1 Conclusions. 27

Figures

Figure 1.1 Location of the Site

Figure 2.1 Environmental Monitoring Stations

Appendices

Appendix A Environmental Management Structure

Appendix B Construction Programme

Appendix C Calibration Certificates

Appendix D Monitoring Schedule

Appendix E Monitoring Data and Graphical Plots

Appendix F Event and Action Plan

Appendix G Wind Data

Appendix H Dolphin Monitoring Results

Appendix I Waste Flow Table

Appendix J Cumulative Statistics on Complaints

Appendix K Environmental Licenses and Permits

Appendix L Implementation Schedule of Environmental Mitigation Measures

Appendix M Record of ˇ§Notification of Environmental Quality Limit Exceedancesˇ¨ and Record of ˇ§Notification of Summons and Prosecutionsˇ¨

Appendix N Location of Works Areas

Executive Summary

The Hong Kong-Zhuhai-Macao Bridge (HZMB) Hong Kong Link Road (HKLR) serves to connect the HZMB Main Bridge at the Hong Kong Special Administrative Region (HKSAR) Boundary and the HZMB Hong Kong Boundary Crossing Facilities (HKBCF) located at the north eastern waters of the Hong Kong International Airport (HKIA).

The HKLR project has been separated into two contracts. They are Contract No. HY/2011/03 Hong Kong-Zhuhai-Macao Bridge Hong Kong Link Road-Section between Scenic Hill and Hong Kong Boundary Crossing Facilities (hereafter referred to as the Contract) and Contract No. HY/2011/09 Hong Kong-Zhuhai-Macao Bridge Hong Kong Link Road-Section between HKSAR Boundary and Scenic Hill.

China State Construction Engineering (Hong Kong) Ltd. was awarded by Highways Department as the Contractor to undertake the construction works of Contract No. HY/2011/03. The main works of the Contract include land tunnel at Scenic Hill, tunnel underneath Airport Road and Airport Express Line, reclamation and tunnel to the east coast of the Airport Island, at-grade road connecting to the HKBCF and highway works of the HKBCF within the Airport Island and in the vicinity of the HKLR reclamation. The Contract is part of the HKLR Project and HKBCF Project, these projects are considered to be ˇ§Designated Projectsˇ¨, under Schedule 2 of the Environmental Impact Assessment (EIA) Ordinance (Cap 499) and Environmental Impact Assessment (EIA) Reports (Register No. AEIAR-144/2009 and AEIAR-145/2009) were prepared for the Project. The current Environmental Permit (EP) EP-352/2009/D for HKLR and EP-353/2009/K for HKBCF were issued on 22 December 2014 and 11 April 2016, respectively. These documents are available through the EIA Ordinance Register. The construction phase of Contract was commenced on 17 October 2012.

BMT Asia Pacific 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 HKLR (Version 1.0) and will be providing environmental team services to the Contract.

This is the fifty-eighth Monthly EM&A report for the Contract which summarizes the monitoring results and audit findings of the EM&A programme during the reporting period from 1 to 31 July 2017.

Environmental Monitoring and Audit Progress

The monthly EM&A programme was undertaken in accordance with the Updated EM&A Manual for HKLR (Version 1.0). A summary of the monitoring activities during this reporting month is listed below:

1-hr TSP Monitoring	3, 7, 13, 19, 25 and 31 July 2017
24-hr TSP Monitoring	4, 6, 12, 18, 24, 26 and 28 July 2017
Noise Monitoring	3, 13, 19, 25 and 31 July 2017
Chinese White Dolphin Monitoring	20, 24, 27 and 28 July 2017
Site Inspection	5, 13, 19 and 28 July 2017

Due to boat availability, the dolphin monitoring schedule was rescheduled from 21 July 2017 to 20 July 2017, and from 26 July 2017 to 27 July 2017.

Due to motor failure of high volume sampler, the 24-hour TSP monitoring at Station AMS5 (Ma Wan Chung Village) was rescheduled from 24 July 2017 to 26 July 2017.

The monitoring schedule of water quality monitoring for all stations except station CS2 were adopted from the published Monthly Environmental Monitoring and Audit (EM&A) Report for July 2017 prepared for Contract No. HY/2010/02 Hong Kong-Zhuhai-Macao Bridge Hong Kong Boundary Crossing Facilities ˇV Reclamation Works. The monitoring schedule of water quality monitoring for station CS2 was adopted from the published Monthly EM&A Report for July 2017 prepared by Contract No. HY/2011/09 Hong Kong-Zhuhai-Macao Bridge Hong Kong Link Road ˇV Section between HKSAR Boundary and Scenic Hill.

Breaches of Action and Limit Levels

A summary of environmental exceedances for this reporting month is as follows:

Environmental Monitoring	Parameters	Action Level (AL)	Limit Level (LL)
Air Quality	1-hr TSP	0	0
	24-hr TSP	0	0
Noise	Leq (30 min)	0	0
Water Quality	Suspended solids level (SS)	2	0
	Turbidity level	0	0
	Dissolved oxygen level (DO)	0	0

Complaint Log

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

Notifications of Summons and Prosecutions

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

Reporting Changes

This report has been developed in compliance with the reporting requirements for the subsequent EM&A reports as required by the Updated EM&A Manual for HKLR (Version 1.0).

The proposal for the change of Action Level and Limit Level for suspended solid and turbidity was approved by EPD on 25 March 2013.

The revised Event and Action Plan for dolphin monitoring was approved by EPD on 6 May 2013.

The original monitoring station at IS(Mf)9 (Coordinate: 813273E, 818850N) was observed inside the perimeter silt curtain of Contract HY/2010/02 on 1 July 2013, as such the original impact water quality monitoring location at IS(Mf)9 was temporarily shifted outside the silt curtain. As advised by the Contractor of HY/2010/02 in August 2013, the perimeter silt curtain was shifted to facilitate safe anchorage zone of construction barges/vessels until end of 2013 subject to construction progress. Therefore, water quality monitoring station IS(Mf)9 was shifted to 813226E and 818708N since 1 July 2013. According to the water quality monitoring teamˇ¦s observation on 24 March 2014, the original monitoring location of IS(Mf)9 was no longer enclosed by the perimeter silt curtain of Contract HY/2010/02. Thus, the impact water quality monitoring works at the original monitoring location of IS(Mf)9 has been resumed since 24 March 2014.

Transect lines 1, 2, 7, 8, 9 and 11 for dolphin monitoring have been revised due to the obstruction of the permanent structures associated with the construction works of HKLR and the southern viaduct of TM-CLKL, as well as provision of adequate buffer distance from the Airport Restricted Areas. The EPD issued a memo and confirmed that they had no objection on the revised transect lines on 19 August 2015.

Technical issues have been observed from impact monitoring of the Contract and thus published information from Monthly EM&A Report for Jun and July 2017 prepared for Contract No. HY/2010/02 and Contract No. HY/2011/09 were adopted for the Contract.

Future Key Issues

The future key issues include potential noise, air quality, water quality and ecological impacts and waste management arising from the following construction activities to be undertaken in the upcoming month:

ˇP Stockpiling at WA7;

ˇP Removal of toe loading at Portion X;

• Dismantling/trimming of Temporary 40mm Stone Platform for Construction of Seawall at Portion X;
• Construction of Seawall at Portion X;
• Loading and Unloading Filling Materials at Portion X;
• Backfilling at Scenic Hill Tunnel (Cut & Cover Tunnel) at Portion X;
• Excavation for HKBCF to Airport Tunnel & Construction of Tunnel Box Structure at Portion X;
• Excavation for Diversion of Culvert PR14 at Portion X;

ˇP Works for Diversion of Airport Road;

• Utilities Detection at Airport Road / Airport Express Line/ East Coast Road;
• Establishment of Site Access at Airport Road / Airport Express Line/East Coast Road;

ˇP Construction of Tunnel Box Structure at Shaft 3 Extension North Shaft; 

• Excavation and Lateral Support Works & Construction of Tunnel Box Structure for HKBCF to Airport Tunnel West (Cut & Cover Tunnel) at Airport Road;
• Excavation and Lateral Support Works & Construction of Tunnel Box Structure for HKBCF to Airport Tunnel East (Cut & Cover Tunnel) at Portion X;
• Sub-structure, Superstructure & Finishing Works for Highway Operation and Maintenance Area Building at Portion X; and

ˇP Superstructure & Finishing Works for Scenic Hill Tunnel West Portal Ventilation building at West Portal.

1 Introduction

1.1 Basic Project Information

1.1.1 The Hong Kong-Zhuhai-Macao Bridge (HZMB) Hong Kong Link Road (HKLR) serves to connect the HZMB Main Bridge at the Hong Kong Special Administrative Region (HKSAR) Boundary and the HZMB Hong Kong Boundary Crossing Facilities (HKBCF) located at the north eastern waters of the Hong Kong International Airport (HKIA).

1.1.2 The HKLR project has been separated into two contracts. They are Contract No. HY/2011/03 Hong Kong-Zhuhai-Macao Bridge Hong Kong Link Road-Section between Scenic Hill and Hong Kong Boundary Crossing Facilities (hereafter referred to as the Contract) and Contract No. HY/2011/09 Hong Kong-Zhuhai-Macao Bridge Hong Kong Link Road-Section between HKSAR Boundary and Scenic Hill.

1.1.3 China State Construction Engineering (Hong Kong) Ltd. was awarded by Highways Department (HyD) as the Contractor to undertake the construction works of Contract No. HY/2011/03. The Contract is part of the HKLR Project and HKBCF Project, these projects are considered to be ˇ§Designated Projectsˇ¨, under Schedule 2 of the Environmental Impact Assessment (EIA) Ordinance (Cap 499) and Environmental Impact Assessment (EIA) Reports (Register No. AEIAR-144/2009 and AEIAR-145/2009) were prepared for the Project. The current Environmental Permit (EP) EP-352/2009/D for HKLR and EP-353/2009/K for HKBCF were issued on 22 December 2014 and 11 April 2016, respectively. These documents are available through the EIA Ordinance Register. The construction phase of Contract was commenced on 17 October 2012. Figure 1.1 shows the project site boundary. The works areas are shown in Appendix N.

1.1.4 The Contract includes the following key aspects:

ˇP New reclamation along the east coast of the approximately 23 hectares.

ˇP Tunnel of Scenic Hill (Tunnel SHT) from Scenic Hill to the new reclamation, of approximately 1km in length with three (3) lanes for the east bound carriageway heading to the HKBCF and four (4) lanes for the westbound carriageway heading to the HZMB Main Bridge.

ˇP An abutment of the viaduct portion of the HKLR at the west portal of Tunnel SHT and associated road works at the west portal of Tunnel SHT.

ˇP An at grade road on the new reclamation along the east coast of the HKIA to connect with the HKBCF, of approximately 1.6 km along dual 3-lane carriageway with hard shoulder for each bound.

ˇP Road links between the HKBCF and the HKIA including new roads and the modification of existing roads at the HKIA, involving viaducts, at grade roads and a Tunnel HAT.

ˇP A highway operation and maintenance area (HMA) located on the new reclamation, south of the Dragonair Headquarters Building, including the construction of buildings, connection roads and other associated facilities.

ˇP Associated civil, structural, building, geotechnical, marine, environmental protection, landscaping, drainage and sewerage, tunnel and highway electrical and mechanical works, together with the installation of street lightings, traffic aids and sign gantries, water mains and fire hydrants, provision of facilities for installation of traffic control and surveillance system (TCSS), reprovisioning works of affected existing facilities, implementation of transplanting, compensatory planting and protection of existing trees, and implementation of an environmental monitoring and audit (EM&A) program.

1.1.5 This is the fifty-eighth Monthly EM&A report for the Contract which summarizes the monitoring results and audit findings of the EM&A programme during the reporting period from 1 to 31 July 2017.

1.1.6 BMT Asia Pacific Limited has been appointed by the Contractor to implement the EM&A programme for the Contract in accordance with the Updated EM&A Manual for HKLR (Version 1.0) for HKLR and will be providing environmental team services to the Contract. Ramboll Environ Hong Kong Ltd. was employed by HyD as the Independent Environmental Checker (IEC) and Environmental Project Office (ENPO) for the Project. The project organization with regard to the environmental works is as follows.

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 A. 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
Supervising Officerˇ¦s Representative (Ove Arup & Partners Hong Kong Limited)	(Chief Resident Engineer, CRE)	Robert Antony Evans	3968 0801	2109 1882
Environmental Project Office / Independent Environmental Checker (Ramboll Environ Hong Kong Limited)	Environmental Project Office Leader	Y. H. Hui	3465 2888	3465 2899
	Independent Environmental Checker	Antony Wong	3465 2888	3465 2899
Contractor (China State Construction Engineering (Hong Kong) Ltd)	Project Manager	S. Y. Tse	3968 7002	2109 2588
	Environmental Officer	Federick Wong	3968 7117	2109 2588
Environmental Team (BMT Asia Pacific)	Environmental Team Leader	Claudine Lee	2241 9847	2815 3377
24 hours complaint hotline	---	---	5699 5730	---

1.3 Construction Programme

1.3.1 A copy of the Contractorˇ¦s construction programme is provided in Appendix B.

1.4 Construction Works Undertaken During the Reporting Month

1.4.1 A summary of the construction activities undertaken during this reporting month is shown in Table 1.2.

Table 1.2 Construction Activities During Reporting Month

Description of Activities	Site Area
Stockpiling	WA7
Dismantling/trimming of temporary 40mm stone platform for construction of seawall	Portion X
Construction of seawall	Portion X
Loading and unloading of filling materials	Portion X
Backfilling at Scenic Hill Tunnel (Cut & Cover Tunnel)	Portion X
Excavation for HKBCF to Airport Tunnel & construction of tunnel box structure	Portion X
Excavation for diversion of culvert PR14	Portion X
Works for diversion	Airport Road
Utilities detection	Airport Road/ Airport Express Line/ East Coast Road
Establishment of site access	Airport Road/ Airport Express Line/ East Coast Road
Mined tunnel lining / box jacking transition zone rebar fixing underneath Airport Road and Airport Express Line	Airport Road and Airport Express Line
Construction of Tunnel box structure	Shaft 3 Extension North Shaft
Excavation and lateral support works & Construction of Tunnel Box Structure for HKBCF to Airport Tunnel West (Cut & Cover Tunnel)	Airport Road
Excavation and lateral support works & construction of tunnel box structure for HKBCF to Airport Tunnel East (Cut & Cover Tunnel)	Portion X
Sub-structure, superstructure and finishing works for Highway Operation and Maintenance Area Building	Portion X
Superstructure & finishing works for Scenic Hill Tunnel West Portal Ventilation building	West Portal

2 Air Quality Monitoring

2.1 Monitoring Requirements

2.1.1 In accordance with the Contract Specific EM&A Manual, baseline 1-hour and 24-hour TSP levels at two 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 1-hr TSP and 24-hr TSP are provided in Table 2.1 and Table 2.2, respectively.

Table 2.1 Action and Limit Levels for 1-hour TSP

Monitoring Station	Action Level, µg/m^3	Limit Level, µg/m^3
AMS 5 ˇV Ma Wan Chung Village (Tung Chung)	352	500
AMS 6 ˇV Dragonair / CNAC (Group) Building (HKIA)	360

Table 2.2 Action and Limit Levels for 24-hour TSP

Monitoring Station	Action Level, µg/m^3	Limit Level, µg/m^3
AMS 5 ˇV Ma Wan Chung Village (Tung Chung)	164	260
AMS 6 ˇV Dragonair / CNAC (Group) Building (HKIA)	173	260

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 Monitoring Locations

2.3.1 Monitoring locations AMS5 and AMS6 were set up at the proposed locations in accordance with Contract Specific EM&A Manual.

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

Table 2.4 Locations of Impact Air Quality Monitoring Stations

Monitoring Station	Location
AMS5	Ma Wan Chung Village (Tung Chung)
AMS6	Dragonair / CNAC (Group) Building (HKIA)

2.4 Monitoring Parameters, Frequency and Duration

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 Monitoring Methodology

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 ˇÓ2.5% 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 ˘XC and not variable by more than ˇÓ3 ˘XC; the relative humidity (RH) was < 50% and not variable by more than ˇÓ5%. 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.

(ix) 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 HKLR (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 C.

2.5.2 1-hour TSP Monitoring

(a) Measuring Procedures

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

(i) Turn the power on.

(ii) Close the air collecting opening cover.

(iii) Push the ˇ§TIME SETTINGˇ¨ switch to [BG].

(iv) Push ˇ§START/STOPˇ¨ 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 ˇ§SPAN CHECKˇ¨ is indicated in the display.

(vii) Push ˇ§START/STOPˇ¨ 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 ˇ§TIME SETTINGˇ¨ switch the time set in the display to 3 hours.

(x) Lower down the air collection opening cover.

(xi) Push ˇ§START/STOPˇ¨ 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 C.

2.6 Monitoring Schedule for the Reporting Month

2.6.1 The schedule for air quality monitoring in July 2017 is provided in Appendix D.

2.7 Monitoring Results

2.7.1 The monitoring results for 1-hour TSP and 24-hour TSP are summarized in Tables 2.6 and 2.7 respectively. Detailed impact air quality monitoring results and relevant graphical plots are presented in Appendix E.

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

Monitoring Station	Average (mg/m^3)	Range (mg/m^3)	Action Level (mg/m^3)	Limit Level (mg/m^3)
AMS5	23	3 ˇV 97	352	500
AMS6	22	2 ˇV 93	360	500

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

Monitoring Station	Average (mg/m^3)	Range (mg/m^3)	Action Level (mg/m^3)	Limit Level (mg/m^3)
AMS5	44	28 ˇV 54	164	260
AMS6	48	23 ˇV 118	173	260

2.7.2 There were no Action and Limit Level exceedances of 1-hr TSP and 24-hr TSP were recorded at AMS5 and AMS6 during the reporting month.

2.7.3 The event action plan is annexed in Appendix F.

2.7.4 The wind data obtained from the on-site weather station during the reporting month is shown in Appendix G.

3 Noise Monitoring

3.1 Monitoring Requirements

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 Project. The Action and Limit level of 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
NMS5 ˇV Ma Wan Chung Village (Ma Wan Chung Resident Association) (Tung Chung)	0700-1900 hours on normal weekdays	When one documented complaint is received	75 dB(A)

3.2 Monitoring Equipment

3.2.1 Noise monitoring was performed using sound level meters at each designated 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 Monitoring Locations

3.3.1 Monitoring location NMS5 was set up at the proposed locations in accordance with Contract Specific EM&A Manual.

3.3.2 Figure 2.1 shows the locations of monitoring stations. Table 3.3 describes the details of the monitoring stations.

Table 3.3 Locations of Impact Noise Monitoring Stations

Monitoring Station	Location
NMS5	Ma Wan Chung Village (Ma Wan Chung Resident Association) (Tung Chung)

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-mins 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 sound level meter was set on a tripod at a height of 1.2 m above the podium for free-field measurements at NMS5. A correction of +3 dB(A) shall be made to the free field measurements.

(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: L_{eq(30-minutes)} during non-restricted hours i.e. 07:00 ˇV 1900 on normal weekdays

(d) Prior to and after each noise measurement, the meter was calibrated using the acoustic calibrator for 94.0 dB(A) at 1000 Hz. If the difference in the calibration level before and after measurement was more than 1.0 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 L_eq, L₁₀ and L₉₀ were recorded. In addition, site conditions and noise sources were recorded on a standard record sheet.

(f) 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.

(g) 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 C.

3.6 Monitoring Schedule for the Reporting Month

3.6.1 The schedule for construction noise monitoring in July 2017 is provided in Appendix D.

3.7 Monitoring Results

3.7.1 The monitoring results for construction noise are summarized in Table 3.5 and the monitoring results and relevant graphical plots are provided in Appendix E.

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

Monitoring Station	Average Leq (30 mins), dB(A)	Range of Leq (30 mins), dB(A)	Limit Level Leq (30 mins), dB(A)
NMS5	58	57 ˇV 60	75

*A correction factor of +3dB(A) from free field to facade measurement was included.

3.7.2 There were no Action and Limit Level exceedance for noise during daytime on normal weekdays of the reporting month.

3.7.3 Major noise sources during the noise monitoring included construction activities of the Contract and nearby traffic.

3.7.4 The event action plan is annexed in Appendix F.

4 Water Quality Monitoring

4.1 Monitoring Requirements

4.1.1 Impact water quality monitoring was carried out to ensure that any deterioration of water quality is detected, and that timely action is taken to rectify the situation. For impact water quality monitoring, measurements were taken in accordance with the Contract Specific EM&A Manual. Table 4.1 shows the established Action/Limit Levels for the environmental monitoring works. The ET proposed to amend the Acton Level and Limit Level for turbidity and suspended solid and EPD approved ETˇ¦s proposal on 25 March 2013. Therefore, Action Level and Limit Level for the Contract have been changed since 25 March 2013.

4.1.2 The original and revised Action Level and Limit Level for turbidity and suspended solid are shown in Table 4.1.

Table 4.1 Action and Limit Levels for Water Quality

Parameter (unit)	Water Depth	Action Level	Limit Level
Dissolved Oxygen (mg/L) (surface, middle and bottom)	Surface and Middle	5.0	4.2 except 5 for Fish Culture Zone
	Bottom	4.7	3.6
Turbidity (NTU)	Depth average	27.5 or 120% of upstream control stationˇ¦s turbidity at the same tide of the same day; The action level has been amended to ˇ§27.5 and 120% of upstream control stationˇ¦s turbidity at the same tide of the same dayˇ¨ since 25 March 2013.	47.0 or 130% of turbidity at the upstream control station at the same tide of same day; The limit level has been amended to ˇ§47.0 and 130% of turbidity at the upstream control station at the same tide of same dayˇ¨ since 25 March 2013.
Suspended Solid (SS) (mg/L)	Depth average	23.5 or 120% of upstream control stationˇ¦s SS at the same tide of the same day; The action level has been amended to ˇ§23.5 and 120% of upstream control stationˇ¦s SS at the same tide of the same dayˇ¨ since 25 March 2013.	34.4 or 130% of SS at the upstream control station at the same tide of same day and 10mg/L for Water Services Department Seawater Intakes; The limit level has been amended to ˇ§34.4 and 130% of SS at the upstream control station at the same tide of same day and 10mg/L for Water Services Department Seawater Intakesˇ¨ since 25 March 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 limit occurs when monitoring result is lower that the limit.

(3) For SS & turbidity non-compliance of the water quality limits occur when monitoring result is higher than the limits.

(4) The change to the Action and limit Levels for Water Quality Monitoring for the EM&A works was approved by EPD on 25 March 2013.

4.2 Monitoring Equipment

4.2.1 The monitoring equipment used in the impact water quality monitoring programme are detailed in the Monthly EM&A Report for July 2017 prepared for Contract No. HY/2010/02 and Contract No. HY/2011/09.

4.3 Monitoring Parameters, Frequency and Duration

4.3.1 Table 4.3 summarizes the monitoring parameters, frequency and monitoring depths of impact water quality monitoring as required 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, Control/Far Field Stations: CS2 & CS(Mf)5, Sensitive Receiver Stations: SR3, SR4, SR5, SR10A & SR10B	ˇP Depth, m ˇP Temperature, ^oC ˇP Salinity, ppt ˇP Dissolved Oxygen (DO), mg/L ˇP DO Saturation, % ˇP Turbidity, NTU ˇP pH ˇP Suspended Solids (SS), mg/L	Three times per week during mid-ebb and mid-flood tides (within ˇÓ 1.75 hour of the predicted time)	3 (1 m below water surface, mid-depth and 1 m above sea bed, except where the water depth is less than 6 m, in which case the mid-depth station may be omitted. Should the water depth be less than 3 m, only the mid-depth station will be monitored).

4.4 Monitoring Locations

4.4.1 In accordance with the Contract Specific EM&A Manual, thirteen stations (6 Impact Stations, 5 Sensitive Receiver Stations and 2 Control Stations) were designated for impact water quality monitoring. The six Impact Stations (IS) were chosen on the basis of their proximity to the reclamation and thus the greatest potential for water quality impacts, the five Sensitive Receiver Stations (SR) were chosen as they are close to the key sensitive receives and the two Control 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 Technical issues have been observed from impact monitoring of the Contract and thus published information from Monthly EM&A Report for July 2017 prepared for Contract No. HY/2010/02 and Contract No. HY/2011/09 were adopted for the Contract.

4.4.3 Due to safety concern and topographical condition of the original locations of SR4 and SR10B, alternative impact water quality monitoring stations, naming as SR4(N) and SR10B(N), were adopted, which are situated in vicinity of the original impact water quality monitoring stations (SR4 and SR10B) and could be reachable.

4.4.4 Due to marine work of the Expansion of Hong Kong International Airport into a Three-Runway System (3RS Project), original locations of water quality monitoring stations SR5 and IS10 are enclosed by works boundary of 3RS Project. Alternative impact water quality monitoring stations, naming as SR5(N) and IS10(N) was approved in 12 May 2017 and were adopted starting from 15 May 2017 to replace the original locations of water quality monitoring for Contract No. HY/2010/02.

4.4.5 The locations of these monitoring stations are summarized in Table 4.4 and shown in Figure 2.1.

Table 4.4 Impact Water Quality Monitoring Stations

Monitoring Stations	Description	Coordinates
		Easting	Northing
IS5	Impact Station (Close to HKLR construction site)	811579	817106
IS(Mf)6	Impact Station (Close to HKLR 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	Impact Station (Close to HKBCF construction site)	812577	820670
IS10(N)	Impact Station (Close to HKBCF construction site)	812942	820881
SR3	Sensitive receivers (San Tau SSSI)	810525	816456
SR4	Sensitive receivers (Tai Ho Inlet)	814760	817867
SR4(N)	Sensitive receivers (Tai Ho Inlet)	814705	817859
SR5	Sensitive receivers (Artificial Reef In NE Airport)	811489	820455
SR5(N)	Sensitive receivers (Artificial Reef In NE Airport)	812569	821475
SR10A	Sensitive receivers (Ma Wan Fish Culture Zone)	823741	823495
SR10B	Sensitive receivers (Ma Wan Fish Culture Zone)	823686	823213
SR10B(N)	Sensitive receivers (Ma Wan Fish Culture Zone)	823683	823187
CS2	Control Station (Mid-Ebb)	805849	818780
CS(Mf)5	Control Station (Mid-Flood)	817990	821129
Remarks: 1) Technical issues have been observed from impact monitoring of the Contract and thus published informatin from Monthly EM&A Report for July 2017 prepared for Contract No. HY/2010/02 and Contract No. HY/2011/09 were adopted for the Contract. 2) Due to safety concern and topographical condition of the original locations of SR4 and SR10B, alternative impact water quality monitoring stations, naming as SR4(N) and SR10B(N), were adopted, which are situated in vicinity of the original impact water quality monitoring stations (SR4 and SR10B) and could be reachable. 3) Due to marine work of the Expansion of Hong Kong International Airport into a Three-Runway System (3RS Project), original locations of water quality monitoring stations SR5 and IS10 are enclosed by works boundary of 3RS Project. Alternative impact water quality monitoring stations, naming as SR5(N) and IS10(N) was approved in 12 May 2017 and were adopted starting from 15 May 2017 to replace the original locations of water quality monitoring for Contract No. HY/2010/02.

4.5 Monitoring Methodology

4.5.1 The monitoring methodology is detailed in the Monthly EM&A Report for July 2017 prepared for Contract No. HY/2010/02 and Contract No. HY/2011/09.

4.6 Monitoring Schedule for the Reporting Month

4.6.1 The monitoring schedule for impact water quality monitoring in July 2017 is detailed in the Monthly EM&A Report prepared for Contract No. HY/2010/02 and Contract No. HY/2011/09.

4.7 Monitoring Results

4.7.1 The monitoring results of water quality monitoring for all stations except station CS2 were adopted from the published Monthly EM&A Report for Contract No. HY/2010/02.

4.7.2 The monitoring results of water quality monitoring for station CS2 was adopted from the published Monthly EM&A Report Contract No. HY/2011/09.

4.7.3 For marine water quality monitoring, no Limit Level exceedances of dissolved oxygen, turbidity and suspended solid levels were recorded by the ET of Contract No. HY/2010/02 and Contract No. HY/2011/09 during the reporting month. There was no Action Level exceedances of dissolved oxygen and turbidity levels were recorded by the ET of Contract No. HY/2010/02 and Contract No. HY/2011/09 during the reporting month. There were two Action Level exceedances of suspended solid levels were recorded by the ET of Contract No. HY/2010/02 during the reporting month.

4.7.4 On 12 July 2017, an Action Level exceedance of suspended solid was recorded at station SR3 during mid-ebb tide. On 14 July 2017, an Action Level exceedance of suspended solid was recorded at station IS7 during mid-flood tide. Removal of surcharge, road and drainage construction at Zones 1 and 2; seawall construction at Zones 2 and 3; box culvert construction at Zone 2; and transportation of fill material at Zone 3 were carried out within the properly deployed silt curtain as recommended in the EIA Report. There was no marine transportation at Zones 1, 2, and 3. There were no specific activities recorded during the monitoring period that would cause any significant impacts on the monitoring results. Also, there was no muddy plume observed at station IS7 during sampling exercise. No leakage of turbid water or any abnormity or malpractice for all contract works was observed during the sampling exercise

4.7.5 The exceedances of suspended solids level recorded during reporting period were considered to be attributed to other external factors such as sea condition, rather than the contract works. Therefore, the exceedances were considered as non-contract related. Records of ˇ§Notification of Environmental Quality Limit Exceedancesˇ¨ are provided in Appendix N.

4.7.6 The event action plan is annexed in Appendix F.

5 Dolphin Monitoring

5.1 Monitoring Requirements

5.1.1 Impact dolphin monitoring is required to be conducted by a qualified dolphin specialist team to evaluate whether there have been any effects on the dolphins.

5.1.2 The Action Level and Limit Level for dolphin monitoring are shown in Table 5.1.

Table 5.1 Action and Limit Levels for 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)

Remarks:

1. STG means quarterly encounter rate of number of dolphin sightings.

2. ANI means quarterly encounter rate of total number of dolphins.

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.

5.1.3 The revised Event and Action Plan for dolphin Monitoring was approved by EPD in 6 May 2013. The revised Event and Action Plan is annexed in Appendix F.

5.2 Monitoring Methodology

Vessel-based Line-transect Survey

5.2.1 According to the requirements of the Updated EM&A Manual for HKLR (Version 1.0), dolphin monitoring programme should cover all transect lines in NEL and NWL survey areas (see Figure 1 of Appendix H) twice per month. The co-ordinates of all transect lines are shown in Table 5.2. The coordinates of several starting points have been revised due to the obstruction of the permanent structures associated with the construction works of HKLR and the southern viaduct of TM-CLKL, as well as provision of adequate buffer distance from the Airport Restricted Areas. The EPD issued a memo and confirmed that they had no objection on the revised transect lines on 19 August 2015, and the revised coordinates are in red and marked with an asterisk in Table 5.2.

Table 5.2 Co-ordinates of Transect Lines

Line No.		Easting	Northing	Line No.		Easting	Northing
1	Start Point	804671	815456*	13	Start Point	816506	819480
1	End Point	804671	831404	13	End Point	816506	824859
2	Start Point	805475	815913*	14	Start Point	817537	820220
2	End Point	805477	826654	14	End Point	817537	824613
3	Start Point	806464	819435	15	Start Point	818568	820735
3	End Point	806464	822911	15	End Point	818568	824433
4	Start Point	807518	819771	16	Start Point	819532	821420
4	End Point	807518	829230	16	End Point	819532	824209
5	Start Point	808504	820220	17	Start Point	820451	822125
5	End Point	808504	828602	17	End Point	820451	823671
6	Start Point	809490	820466	18	Start Point	821504	822371
6	End Point	809490	825352	18	End Point	821504	823761
7	Start Point	810499	820880*	19	Start Point	822513	823268
7	End Point	810499	824613	19	End Point	822513	824321
8	Start Point	811508	821123*	20	Start Point	823477	823402
8	End Point	811508	824254	20	End Point	823477	824613
9	Start Point	812516	821303*	21	Start Point	805476	827081
9	End Point	812516	824254	21	End Point	805476	830562
10	Start Point	813525	820872	22	Start Point	806464	824033
10	End Point	813525	824657	22	End Point	806464	829598
11	Start Point	814556	818853*	23	Start Point	814559	821739
11	End Point	814556	820992	23	End Point	814559	824768
12	Start Point	815542	818807
12	End Point	815542	824882

Note:
Co-ordinates in red and marked with asterisk are revised co-ordinates of transect line.

5.2.2 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 18 years of marine mammal monitoring surveys in Hong Kong developed by HKCRP (see Hung 2015). 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.

5.2.3 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 Fujinon marine binoculars. Both observers searched the sea ahead of the vessel, between 270^o and 90^o (in relation to the bow, which is defined as 0^o). 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.

5.2.4 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).

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

5.2.6 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.

5.2.7 Survey effort being conducted along the parallel transect lines that were perpendicular to the coastlines (as indicated in Figure 1 of Appendix H) was labeled as ˇ§primaryˇ¨ survey effort, while the survey effort conducted along the connecting lines between parallel lines was labeled as ˇ§secondaryˇ¨ 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.

5.2.8 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

5.2.9 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.

5.2.10 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.

5.2.11 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.

5.2.12 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).

5.2.13 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. Detailed information on all identified individuals will be further presented as an appendix in quarterly EM&A reports.

5.3 Monitoring Results

Vessel-based Line-transect Survey

5.3.1 During the month of July 2017, two sets of systematic line-transect vessel surveys were conducted on the 20^th, 24^th, 27^th and 28^th 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 H.

5.3.2 From these surveys, a total of 265.21 km of survey effort was collected, with 99.4% of the total survey effort being conducted under favourable weather conditions (i.e. Beaufort Sea State 3 or below with good visibility) (Annex I of Appendix H). Among the two areas, 96.30 km and 168.91 km of survey effort were collected from NEL and NWL survey areas respectively. Moreover, the total survey effort conducted on primary lines was 194.61 km, while the effort on secondary lines was 70.60 km.

5.3.3 During the two sets of monitoring surveys in July 2017, only two groups of 11 Chinese White Dolphins were sighted (see Annex II of Appendix H). Both dolphin sightings were made in NWL, while none was sighted in NEL.

5.3.4 For the surveys conducted in July 2017, both dolphin groups were sighted during on-effort search, and one of the two groups was sighted on primary lines (Annex II of Appendix H). Both sightings were not associated with any operating fishing vessel.

5.3.5 Distribution of the dolphin sightings made in July 2017 is shown in Figure 6 of Appendix H. Both sightings were located at the northwestern end of North Lantau waters, or to the north of Lung Kwu Chau (Figure 6 of Appendix H). As in previous monitoring months, the two dolphin groups were sighted far away from the HKLR03/HKBCF reclamation sites as well as the HKLR09/TMCLKL alignments (Figure 6 of Appendix H).

5.3.6 During the Julyˇ¦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 5.3 and 5.4.

Table 5.3 Individual Survey Event Encounter Rates

		Encounter rate (STG) (no. of on-effort dolphin sightings per 100 km of survey effort)	Encounter rate (ANI) (no. of dolphins from all on-effort sightings per 100 km of survey effort)
		Primary Lines Only	Primary Lines Only
NEL	Set 1: July 20^th / 24^th	0.0	0.0
	Set 2: July 27^th / 28^th	0.0	0.0
NWL	Set 1: July 20^th / 24^th	1.6	14.8
	Set 2: July 27^th / 28^th	0.0	0.0

Remarks:

1. Dolphin Encounter Rates Deduced from the Two Sets of Surveys (Two Surveys in Each Set) in July 2017 in Northeast Lantau (NEL) and Northwest Lantau (NWL).

Table 5.4 Monthly Average Encounter Rates

	Encounter rate (STG) (no. of on-effort dolphin sightings per 100 km of survey effort)		Encounter rate (ANI) (no. of dolphins from all on-effort sightings per 100 km of survey effort)
	Primary Lines Only	Both Primary and Secondary Lines	Primary Lines Only	Both Primary and Secondary Lines
Northeast Lantau	0.0	0.0	0.0	0.0
Northwest Lantau	0.8	1.2	7.3	6.6

Remarks:

1. Monthly Average Dolphin Encounter Rates (Sightings Per 100 km of Survey Effort) from All Four Surveys Conducted in July 2017 on Primary Lines only as well as Both Primary Lines and Secondary Lines in Northeast Lantau (NEL) and Northwest Lantau (NWL).

5.3.7 The average dolphin group size in July 2017 was 5.5 individuals per group, which was higher than the ones in previous months of monitoring surveys but with a very small sample size (i.e. only two groups).

Photo-identification Work

5.3.8 Nine known individual dolphins were sighted nine times during Julyˇ¦s surveys (Annexes III and IV of Appendix H). All individuals were re-sighted only once during the monthly surveys in July.

5.3.9 Notably, two of these individuals (i.e. NL202 and NL233) were sighted with their calves during their re-sightings in July 2017.

Conclusion

5.3.10 During this month of dolphin monitoring, no adverse impact from the activities of this construction project on Chinese White Dolphins was noticeable from general observations.

5.3.11 Due to monthly variation in dolphin occurrence within the study area, it would be more appropriate to draw conclusion on whether any impacts on dolphins have been detected related to the construction activities of this project in the quarterly EM&A report, where comparison on distribution, group size and encounter rates of dolphins between the quarterly impact monitoring period (June ˇV August 2017) and baseline monitoring period (3-month period) will be made.

5.4 Reference

5.4.1 Buckland, S. T., Anderson, D. R., Burnham, K. P., Laake, J. L., Borchers, D. L., and Thomas, L. 2001. Introduction to distance sampling: estimating abundance of biological populations. Oxford University Press, London.

5.4.2 Hung, S. K. 2015. Monitoring of Marine Mammals in Hong Kong waters: final report (2014-15). An unpublished report submitted to the Agriculture, Fisheries and Conservation Department, 198 pp.

5.4.3 Jefferson, T. A. 2000. Population biology of the Indo-Pacific hump-backed dolphin in Hong Kong waters. Wildlife Monographs 144:1-65.

6 Environmental Site Inspection and Audit

6.1 Site Inspection

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 Project. During the reporting month, four site inspections were carried out on 5, 13, 19 and 28 July 2017.

6.1.2 A summary of observations found during the site inspections and the follow up actions taken by the Contractor are described in Table 6.1.

Table 6.1 Summary of Environmental Site Inspections

Date of Audit	Observations	Actions Taken by Contractor / Recommendation	Date of Observations Closed
30 Jun 2017	1. Silt curtain with gap was observed at Portion X. 2. Oil drum was observed without drip tray at N26. 3. Concrete waste was observed at N26. 4. Wastewater treatment facility was not connected properly at N26. 5. Waste was not properly collected by using waste separation facilities at N26. 6. Stagnant water was observed at N26. 7. Inadequate wheel washing facility was observed at N26.	1. The silt curtains were maintained at Portion X. 2. The oil drum was removed from N26. 3. The concrete waste was removed from N26. 4. The wastewater treatment facility was connected and operated properly at N26. 5. The accumulated waste was removed from N26. 6. Larvicide was applied to the stagnant water in the H-beam at N26. 7. An improved wheel washing facility was provided at N26.	5 Jul 2017
5 Jul 2017	1. General refuse was observed in a skip at HAT. 2. Concrete waste was observed on the ground at HAT. 3. Stagnant water was observed at S15. 4. Gaps of silt curtain were observed at Portion X. 5. Waste was observed on the ground at S9. 6. Waste was observed on the ground at S15. 7. An oil drum was observed without drip tray at HAT. 8. Fill cap of water barrier was found missing at WA6.	1. The general refuse was removed from HAT. 2. The concrete waste was removed from the ground at HAT. 3. The stagnant water was removed from S15. 4. The gaps of silt curtain were closed at Portion X. 5. The waste was removed from S9. 6. The waste was removed from S15. 7. The oil drum was removed from HAT. 8. The water barrier was covered with fill cap at WA6.	13 Jul 2017
13 Jul 2017	1. Stagnant water was observed at N4. 2. Waste was observed at N1. 3. Gaps of silt curtain were observed at Portion X. 4. Stagnant water was observed at S9. 5. Stagnant water was observed inside a pipe at N4. 6. An oil drum was observed without drip tray at S15. 7. A loaded dump truck was observed without cover during transport of materials at S16. 8. An oil drum was observed without drip tray at S25.	1. The stagnant water was removed from N4. 2. The waste was removed from N1. 3. The gaps of silt curtain were closed at Portion X. 4. The stagnant water was removed from S9. 5. The pipe containing stagnant water was removed from N4. 6. The oil drum was removed from S15. 7. The loaded dump truck was covered by impervious sheeting while it is transporting in S16. 8. The oil drum was removed from S25.	19 Jul 2017
19 Jul 2017	1. Gaps of silt curtain were observed at Portion X. 2. Rubbish bin was full and waste was observed on the ground at WA6. 3. Waste was observed at S15. 4. Effluent leaking from a broken blue hose was observed at S15. 5. Concrete waste was observed in an undesignated area at S16. 6. Stagnant water was observed at S16. 7. Waste was observed at Ventilation Building.	1. The gaps of silt curtain were closed at Portion X. 2. The waste was removed from WA6. 3. The waste was removed from S15. 4. The broken blue hose was removed from S15. 5. A designated area was provided for the temporarily storage of concrete waste at S16. 6. The stagnant water was removed from S16. 7. The waste was removed from Ventilation Building.	28 Jul 2017
28 Jul 2017	1. Waste was observed at Cut & Cover. 2. Gaps of silt curtain were observed at Portion X. 3. No proper cover for the stored cement bags was observed at Ventilation Building. 4. Waste was observed at Ventilation Building. 5. Stagnant water was observed at Ventilation Building.	The Contractor was recommended to: 1. Remove the waste at Cut & Cover. 2. Close the gaps of silt curtain at Portion X. 3. Cover the cement bags with properly at Ventilation Building. 4. Remove the waste at Ventilation Building. 5. Remove the stagnant water at Ventilation Building.	Follow-up actions for the observations issued for the last weekly site inspection of the reporting month will be inspected during the next site inspections

6.1.3 The Contractor has rectified most of the observations as identified during environmental site inspections within the reporting month. Follow-up actions for outstanding observations will be inspected during the next site inspections.

6.2 Advice on the Solid and Liquid Waste Management Status

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

6.2.2 Monthly summary of waste flow table is detailed in Appendix I.

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

6.3 Environmental Licenses and Permits

6.3.1 The valid environmental licenses and permits during the reporting month are summarized in Appendix K.

6.4 Implementation Status of Environmental Mitigation Measures

6.4.1 In response to the site audit findings, the Contractors have rectified most of the observations as identified during environmental site inspections during the reporting month. Follow-up actions for outstanding observations will be inspected during the next site inspections.

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

6.4.3 Regular marine travel route for marine vessels were implemented properly in accordance to the submitted plan and relevant records were kept properly.

6.4.4 Dolphin Watching Plan was implemented during the reporting month. No dolphins inside the silt curtain were observed. The relevant records were kept properly.

6.5 Summary of Exceedances of the Environmental Quality Performance Limit

6.5.1 For air quality monitoring, no Action and Limit Level exceedances of 1-hr TSP and 24-hr TSP were recorded at AMS5 and AMS6 during the reporting month.

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

6.5.1 For marine water quality monitoring, no Limit Level exceedances of dissolved oxygen, turbidity and suspended solid levels were recorded by the ET of Contract No. HY/2010/02 and Contract No. HY/2011/09 during the reporting month. There was no Action Level exceedances of dissolved oxygen and turbidity levels were recorded by the ET of Contract No. HY/2010/02 and Contract No. HY/2011/09 during the reporting month. There were two Action Level exceedances of suspended solid levels were recorded by the ET of Contract No. HY/2010/02 during the reporting month.

6.6 Summary of Complaints, Notification of Summons and Successful Prosecution

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

7 Future Key Issues

7.1 Construction Programme for the Coming Months

7.1.1 As informed by the Contractor, the major construction activities for August 2017 are summarized in Table 7.1.

Table 7.1 Construction Activities for August 2017

Site Area	Description of Activities
WA7	Stockpiling
Portion X	Removal of toe loading
Portion X	Dismantling/Trimming of Temporary 40mm Stone Platform for Construction of Seawall
Portion X	Construction of Seawall
Portion X	Loading and Unloading of Filling Materials
Portion X	Backfilling at Scenic Hill Tunnel (Cut & Cover Tunnel)
Portion X	Excavation for HKBCF to Airport Tunnel & Construction of Tunnel Box structure
Portion X	Excavation for Diversion of Culvert PR14
Airport Road	Works for Diversion of Airport Road
Airport Road / Airport Express Line / East Coast Road	Utilities Detection
Airport Road / Airport Express Line/ East Coast Road	Establishment of Site Access
Shaft 3 Extension North Shaft	Construction of Tunnel Box Structure
Airport Road	Excavation and Lateral Support Works & Construction of Tunnel Box Structure for HKBCF to Airport Tunnel West (Cut & Cover Tunnel)
Portion X	Excavation and Lateral Support Works & Construction of Tunnel Box Structure for HKBCF to Airport Tunnel East (Cut & Cover Tunnel)
Portion X	Sub-structure, Superstructure & Finishing works for Highway Operation and Maintenance Area Building
West Portal	Superstructure & Finishing Works for Scenic Hill Tunnel West Portal Ventilation building

7.2 Environmental Monitoring Schedule for the Coming Month

7.2.1 The tentative schedule for environmental monitoring in August 2017 is provided in Appendix D.

8 Conclusions

8.1 Conclusions

8.1.1 The construction phase and EM&A programme of the Contract commenced on 17 October 2012. This is the fifty-eighth Monthly EM&A report for the Contract which summarizes the monitoring results and audit findings of the EM&A programme during the reporting period from 1 to 31 July 2017.

Air Quality

8.1.2 For air quality monitoring, no Action and Limit Level exceedances of 1-hr TSP and 24-hr TSP were recorded at AMS5 and AMS6 during the reporting month.

Noise

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

Water Quality

8.1.4 For marine water quality monitoring, no Limit Level exceedances of dissolved oxygen, turbidity and suspended solid levels were recorded by the ET of Contract No. HY/2010/02 and Contract No. HY/2011/09 during the reporting month. There was no Action Level exceedances of dissolved oxygen and turbidity levels were recorded by the ET of Contract No. HY/2010/02 and Contract No. HY/2011/09 during the reporting month. There were two Action Level exceedances of suspended solid levels were recorded by the ET of Contract No. HY/2010/02 during the reporting month.

Dolphin

8.1.5 During the Julyˇ¦s surveys of the Chinese White Dolphin, no adverse impact from the activities of this construction project on Chinese White Dolphins was noticeable from general observations.

8.1.6 Due to monthly variation in dolphin occurrence within the study area, it would be more appropriate to draw conclusion on whether any impacts on dolphins have been detected related to the construction activities of this project in the quarterly EM&A report, where comparison on distribution, group size and encounter rates of dolphins between the quarterly impact monitoring period (June 2017 ˇV August 2017) and baseline monitoring period (3-month period) will be made.

Environmental Site Inspection and Audit

8.1.7 Environmental site inspections were carried out on 5, 13, 19 and 28 July 2017. Recommendations on remedial actions were given to the Contractors for the deficiencies identified during the site inspections.

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