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

Part of the Southern Landfall of TM-CLK Link lies alongside the Hong Kong - Zhuhai - Macao Bridge Hong Kong Boundary Crossing Facilities (HKBCF) where is a reclamation area constructed by Contract HY/2010/02 under Environmental Permit No. EP/353/2009/I. Upon the agreement and confirmation between the Supervising Officer Representatives and Contractors of HY/2010/02 and HY/2012/07 in September 2015, the reclamation area for southern landfall was subsequently handed-over to Contract No. HY/2012/07.

The construction phase of the Contract commenced on 31 October 2013 and will tentatively be completed by 2018. The impact monitoring of the EM&A programme, including air quality, noise, water quality and marine ecological monitoring as well as environmental site inspections, commenced on 31 October 2013.

This is the Twenty-third Monthly EM&A report presenting the EM&A works carried out during the period from 1 to 30 September 2015 for the Southern Connection Viaduct Section in accordance with the Updated EM&A Manual of the TM-CLK Link Project. As informed by the Contractor, major activities in the reporting period included:

Marine Works

· Construction and installation of pile caps;

· Uninstallation of marine piling platform;

· Pile cap installation;

· Pier construction;

· Launching gantry assembly;

· Marine piling; and,

· Installation of pier head segment.

Land-based Works

· Predrilling at Viaduct F;

· Construction and installation of pile caps;

· Pier construction;

· Pile cap installation;

· Re-alignment of Cheung Tung Road;

· Land piling;

· Installation of pier head segment;

· Additional land GI, trial pits & lab testing;

· Relocation of MTRC fence; and,

· Slope work of Viaduct A.

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

24-hour TSP monitoring 6 sessions

1-hour TSP monitoring 6 sessions

Noise monitoring 6 sessions

Impact Water Quality Monitoring 13 sessions

Impact Dolphin Monitoring 2 sessions

Joint Environmental site inspection 5 sessions

Breaches of Action and Limit Levels for Air Quality

No exceedance of Action and Limit Levels was recorded for construction air monitoring in the reporting month.

Breaches of Action and Limit Levels for Noise

No exceedance of Action and Limit Levels was recorded for construction noise monitoring in the reporting month.

Breaches of Action and Limit Levels for Water Quality

No exceedance of Action and Limit Levels was recorded for water quality impact monitoring in the reporting period.

Impact Dolphin Monitoring

During this month of dolphin monitoring, no unacceptable impact from the construction activities of the TM-CLKL Southern Connection Viaduct Section on Chinese White Dolphins was noticeable from general observations. 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 the TM-CLKL Southern Connection Viaduct Section in the quarterly EM&A reports, where comparison on distribution, group size and encounter rates of dolphins between the quarterly impact monitoring period and baseline monitoring period will be made.

Daily marine mammal exclusion zone monitoring was undertaken during the period of marine works under this Contract. No sighting of the Indo-Pacific humpback dolphin Sousa chinensis (i.e. Chinese White Dolphin) was recorded in September 2015 during the exclusion zone monitoring. No Passive Acoustic Monitoring (PAM) was implemented as the marine works were not carried out outside the daylight hours in this reporting month.

Environmental Complaints, Non-compliance & Summons

There was no environmental complaint, notification of summons or successful prosecution recorded in the reporting period.

Reporting Change

There was no reporting change in the reporting period.

Upcoming Works for the Next Reporting Period

Works to be undertaken in the next monitoring period of October 2015 include the following:

Marine Works

· Construction and installation of pile caps;

· Uninstallation of marine piling platform;

· Pile cap installation;

· Pier construction;

· Launching gantry assembly; and

· Installation of pier head segment.

Land-based Works

· Predrilling at Viaduct F;

· Construction and installation of pile caps;

· Pier construction;

· Pile cap installation;

· Re-alignment of Cheung Tung Road;

· Installation of pier head segment;

· Relocation of MTRC fence; and

· Slope work of Viaduct A.

Future Key Issues

Potential environmental impacts arising from the above upcoming construction activities in the next reporting month of October 2015 are mainly associated with dust, noise, marine water quality, marine ecology and waste management issues.

1 Introduction

1.1 Background

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

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

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

The construction phase of the Contract commenced on 31 October 2013 and will be tentatively completed by 2018. The impact monitoring phase of the EM&A programme, including air quality, noise, water quality and marine ecological monitoring as well environmental site inspections, commenced on 31 October 2013.

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

1.2 Scope of Report

This is the Twenty-third Monthly EM&A Report under the Contract No. HY/2012/07 Tuen Mun – Chek Lap Kok Link – Southern Connection Viaduct Section. This report presents a summary of the environmental monitoring and audit works in September 2015.

1.3 Organization Structure

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

Table 1.1 Contact Information of Key Personnel

Party	Position	Name	Telephone	Fax
HyD (Highways Department)	Project Coordinator	Stanley Chan	2762 3406	3188 6614
	Senior Engineer	Steven Shum	2762 4133	3188 6614
SOR (AECOM Asia Company Limited)	Chief Resident Engineer	Daniel Ip	3553 3800	2492 2057
	Resident Engineer	Kingman Chan	3691 3950	3691 2899
ENPO / IEC (Ramboll Environ Hong Kong Ltd.)	ENPO Leader	Y.H. Hui	3547 2133	3465 2899
ENPO / IEC (Ramboll Environ Hong Kong Ltd.)	IEC	Dr. F.C. Tsang	3547 2134	3465 2899
Contractor (Gammon Construction Limited)	Environmental Manager	Brian Kam	3520 0387	3520 0486
Contractor (Gammon Construction Limited)	Environmental Officer	Roy Leung	3520 0387	3520 0486
	24-hour Complaint Hotline		9738 4332
ET (ERM-HK)	ET Leader	Jovy Tam	2271 3113	2723 5660

1.4 Summary of Construction Works

The construction phase of the Contract commenced on 31 October 2013. The three-month rolling construction programme is shown in Appendix B.

As informed by the Contractor, details of the major works carried out in this reporting month are listed below:

Marine Works

· Construction and installation of pile caps;

· Uninstallation of marine piling platform;

· Pile cap installation;

· Pier construction;

· Launching gantry assembly;

· Marine piling; and,

· Installation of pier head segment.

Land-based Works

· Predrilling at Viaduct F;

· Construction and installation of pile caps;

· Pier construction;

· Pile cap installation;

· Re-alignment of Cheung Tung Road;

· Land piling;

· Installation of pier head segment;

· Additional land GI, trial pits & lab testing;

· Relocation of MTRC fence; and,

· Slope work of Viaduct A.

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

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

2 EM&A Results

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

2.1 Air quality

2.1.1 Monitoring Requirements and Equipment

In accordance with the Updated EM&A Manual, impact 1-hour TSP monitoring was conducted three (3) times every six (6) days and impact 24-hour TSP monitoring was carried out once every six (6) days when the highest dust impact was expected. The Action and Limit Levels of the air quality monitoring is provided in Appendix D.

Table 2.1 Locations of Impact Air Quality Monitoring Stations

Monitoring Station	Location	Description	Monitoring Dates
ASR 9	MTR Depot	On the ground nearby MTR Depot Entrance	2, 8, 14, 17, 23 and 29 September 2015
ASR 8A	Area 4	On ground at the works area, Area 4	2, 8, 14, 17, 23 and 29 September 2015

High Volume Samplers (HVSs) were used for carried out 1-hour and 24-hour TSP monitoring on 2, 8, 14, 17, 23 and 29 September 2015 at ASR8A and ASR9 in accordance with the requirements of the Updated EM&A Manual. The TSP monitoring stations are illustrated in Figure 2.1 and detailed in Table 2.1. Wind anemometer was deployed at Area 4 for logging wind speed and wind direction. Copies of the calibration certificates for the equipment are presented in Appendix E. Details of the deployed equipment are given in Table 2.2.

Table 2.2 Air Quality Monitoring Equipment

Equipment	Brand and Model
High Volume Sampler (1-hour TSP and 24-hour TSP)	Tisch Environmental Mass Flow Controlled Total Suspended Particulate (TSP) High Volume Sampler (Model No. TE-5170)
Wind Sensor	Global Water (Wind Speed Sensor: WE550; Wind Direction Sensor: WE570)
Wind Anemometer for calibration	Lutron (Model No. AM-4201)

2.1.2 Monitoring Schedule for the Reporting Month

The schedule for air quality monitoring in September 2015 is provided in Appendix F.

2.1.3 Results and Observations

The monitoring results for 1-hour TSP and 24-hour TSP are summarized in Tables 2.3 and 2.4 respectively. Detailed impact air quality monitoring results are presented in Appendix G.

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

Monitoring Station	Average (µg/m³)	Range (µg/m³)	Action Level (µg/m³)	Limit Level (µg/m³)
ASR 8A	86	43 - 188	394	500
ASR 9	86	58 - 173	393	500

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

Monitoring Station	Average (µg/m³)	Range (µg/m³)	Action Level (µg/m³)	Limit Level (µg/m³)
ASR 8A	59	46 – 91	178	260
ASR 9	60	50 – 73	178	260

The major dust sources in the reporting period included construction activities under the Contract as well as nearby traffic emissions.

All 1-hour and 24-hour TSP results were below the Action and Limit levels at all monitoring locations in the reporting period. No action is thus required to be undertaken in accordance with the Event Action Plan presented in Appendix L.

Meteorological information collected at ASR8A including wind speed and wind direction is provided in Appendix H.

2.2 Noise Monitoring

2.2.1 Monitoring Requirements and Equipment

In accordance with the Updated EM&A Manual, impact noise monitoring was conducted once per week during the construction phase of the Contract. The Action and Limit level of the noise monitoring is provided in Appendix D.

Noise monitoring was performed on 2, 8, 14, 17, 23 and 29 September 2015 by using sound level meter at the designated monitoring station NSR1A (Figure 2.2; Table 2.5) in accordance with the requirements stipulated in the Updated EM&A Manual. Acoustic calibrator was deployed to check the sound level meters at a known sound pressure level. Details of the deployed equipment are provided in Table 2.6. Copies of the calibration certificates for the equipment are presented in Appendix E.

Table 2.5 Location of Impact Noise Monitoring Station

Monitoring Station	Location	Description	Parameter	Frequency and Duration	Monitoring Dates
NSR 1A	Pak Mong Village Pavilion	On the ground at the village entrance	30-minute measurement at each monitoring station between 0700 and 1900 on normal weekdays (Monday to Saturday). L_eq, L₁₀and L₉₀would be recorded.	At least once per week	2, 8, 14, 17, 23 and 29 September 2015

Table 2.6 Noise Monitoring Equipment

Equipment	Brand and Model
Integrated Sound Level Meter	Rion NL-31
Acoustic Calibrator	Rion NC-73

2.2.2 Monitoring Schedule for the Reporting Month

The schedule for construction noise monitoring in the reporting period is provided in Appendix F.

2.2.3 Results and Observations

Results for noise monitoring are summarized in Table 2.7 and the monitoring data is provided in Appendix I.

Table 2.7 Summary of Construction Noise Monitoring Results in the Reporting Period

Average , dB(A),

L_eq_(30mins)

Range, dB(A),

L_eq_(30mins)

Limit Level, dB(A),

L_eq_(30mins)

NSR 1A

58 - 59

No noise Action Level and Limit level exceedance was recorded in the reporting month. No action is thus required to be undertaken in accordance with the Event Action Plan presented in Appendix L.

Major noise sources during the noise monitoring included noise from crane operation and excavation works, nearby traffic noise and aircraft noise.

2.3 Water Quality Monitoring

2.3.1 Monitoring Requirements and Equipment

Impact water quality monitoring was carried out to ensure that any deterioration of water quality was detected, and that timely action was taken to rectify the situation. Impact water quality monitoring was undertaken three days per week during the construction period in accordance with the Updated EM&A Manual. The Action and Limit Levels of the water quality monitoring are provided in Appendix D.

The locations of the monitoring stations under the Contract are shown in Figure 2.3 and Table 2.8.

Table 2.8 Locations of Impact Water Quality Monitoring Stations and its Corresponding Monitoring Requirements

Table 2.9 summarises the equipment used in the impact water quality monitoring programme. Copies of the calibration certificates are attached in Appendix E.

Table 2.9 Water Quality Monitoring Equipment

Equipment	Brand and Model
DO and Salinity	YSI Pro2030
Turbidity meter	HACH Model 2100Q
pH meter	Thermo Scientific Orion 2 Star
Positioning Equipment	Koden913MK2 with KBG-3 DGPS antenna
Water Depth Detector	Speedtech Instrument SM-5
Water Sampler	Kemmerer 1520 (1520-C25) 2.2L with messenger

2.3.2 Monitoring Schedule for the Reporting Month

The schedule for water quality monitoring in September 2015 is provided in Appendix F.

2.3.3 Results and Observations

In total of 13 monitoring events for impact water quality monitoring were conducted at all designated monitoring stations in the reporting month. Impact water quality monitoring results and graphical presentations are provided in Appendix J.

No Action and Limit levels exceedances was recorded at all monitoring stations for impact water quality monitoring in the reporting month. No action is thus required to be undertaken in accordance with the Event Action Plan presented in Appendix L.

2.4 Dolphin monitoring

2.4.1 Monitoring Requirements

Impact dolphin monitoring is required to be conducted by a qualified dolphin specialist team to evaluate whether there have been any effects on the dolphins. In order to fulfil the EM&A requirements and make good use of available resources, the on-going impact line transect dolphin monitoring data collected by HyD’s Contract No. HY/2011/03 Hong Kong-Zhuhai-Macao Bridge. Hong Kong Link Road - Section between Scenic Hill and Hong Kong Boundary Crossing Facilities on the monthly basis is adopted to avoid duplicates of survey effort.

2.4.2 Monitoring equipment

Table 2.10 summarises the equipment used for the impact dolphin monitoring.

Table 2.10 Dolphin Monitoring Equipment

Equipment	Model
Global Positioning System (GPS) Camera Laser Binoculars Marine Binocular Vessel for Monitoring	Garmin 18X-PC Geo One Phottix Nikon D90 300m 2.8D fixed focus Nikon D90 20-300m zoom lens Infinitor LRF 1000 Bushell 7 x 50 marine binocular with compass and reticules 65 foot single engine motor vessel with viewing platform 4.5m above water level

2.4.3 Monitoring Parameter, Frequencies and Duration

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

2.4.4 Monitoring Location

The impact dolphin monitoring was carried out in the NEL and NWL along the line transect as depicted in Figure 2.4. The co-ordinates of all transect lines are shown in Table 2.11 below.

Table 2.11 Impact Dolphin Monitoring Line Transect Co-ordinates

2.4.5 Action & Limit Levels

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

2.4.6 Monitoring Schedule for the Reporting Month

Dolphin monitoring was carried out on 2, 11, 17 and 29 September 2015 (Appendix F).

2.4.7 Results and Observations

A total of 303.46 km of survey effort was collected, with 99.0% of the total survey effort being conducted under favourable weather conditions (i.e. Beaufort Sea State 3 or below with good visibility) during the surveys in September 2015. Among the two areas, 115.34 km and 188.12 km of survey effort were collected from NEL and NWL survey areas respectively. The total survey effort conducted on primary and secondary lines were 221.51 km and 81.95 km respectively. The survey efforts are summarized in Appendix K.

Seven (7) groups of fifty-four (54) Chinese White Dolphins were sighted during the two sets of monitoring surveys in September 2015. All seven (7) dolphin sightings were made in NWL, while none was sighted in NEL. During the surveys in September 2015, all seven (7) dolphin sightings were made on primary lines during on-effort search. No sighting was made in the proximity of the Project’s alignment. The distribution of dolphin sighting during the reporting month is shown in Figure 2.5.

Encounter rates of Chinese White Dolphins are deduced from the survey effort and on-effort sighting data made under favourable conditions (Beaufort 3 or below) in September 2015 are shown in Tables 2.12 & 2.13.

Table 2.12 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: Sept 2^nd / 11^th	0.0	0.0
NEL	Set 2: Sept 17^th / 29^th	0.0	0.0
NWL	Set 1: Sept 2^nd / 11^th	5.5	52.0
NWL	Set 2: Sept 17^th / 29^th	4.0	21.4
Note: Dolphin Encounter Rates are deduced from the two sets of surveys ( two surveys in each set) in September 2015 in Northeast (NEL) and Northwest Lantau (NWL)

Table 2.13 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	4.7	3.7	36.5	28.7

Note: Overall dolphin encounter rates (sightings per 100 km of survey effort) from all four surveys are conducted in September 2015 on primary lines only as well as both primary lines and secondary lines in Northeast and Northwest Lantau

No unacceptable impact from the construction activities of the TM-CLKL Southern Connection Viaduct Section on Chinese White Dolphins was noticeable from general observations during the dolphin monitoring in this reporting month.

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 the TM-CLKL Southern Connection Viaduct Section in the quarterly EM&A reports, where comparison on distribution, group size and encounter rates of dolphins between the quarterly impact monitoring period and baseline monitoring period will be made.

2.4.8 Marine Mammal Exclusion Zone Monitoring

Daily 250 m marine mammal exclusion zone monitoring was undertaken during the period of marine works activities being undertaken. No sighting of Indo-Pacific humpback dolphin Sousa chinensis (i.e. Chinese White Dolphin) were recorded in September 2015 during the exclusion zone monitoring.

Passive Acoustic Monitoring (PAM) was decommissioned as no marine works was carried out outside the daylight hours in this reporting month. Daytime marine mammal exclusion zone was still in effect to cater for temporary staging installation and uninstallation works.

2.5 EM&A Site inspection

Site inspections were carried out on a weekly basis to monitor the implementation of proper environmental pollution control and mitigation measures under the Contract. In the reporting month, five (5) site inspections were carried out on 2, 9, 16, 24 and 29 September 2015.

Key observations during the site inspections are summarized in Table 2.14.

Table 2.14 Specific Observations Identified during the Weekly Site Inspections in this Reporting Month

Inspection Date	Environmental Observations	Recommendations/ Remarks
2 September 2015	Area 1 Ÿ Stagnant water was accumulated in a drip tray for generator. Pier C13 Ÿ A skip for waste was full.	Area 1 Ÿ Stagnant water in drip tray should be removed. Pier C13 Ÿ Waste should be cleaned up regularly.
9 September 2015	Pier A2 Ÿ A drip tray for generator was not plugged. Ÿ Stagnant water was accumulated in gutter. Ÿ Some chemical containers were not placed in drip tray. Pier E9 Ÿ Stagnant water was accumulated in a drip tray for generator.	Pier A2 Ÿ Drip tray for generator should be plugged. Ÿ Stagnant water in gutter should be cleaned up regularly. Ÿ Chemical containers should be placed in drip tray. Pier E9 Ÿ Stagnant water in drip tray should be removed.
16 September 2015	Abutment D Ÿ An old EP was displayed. Ÿ The exposed area was partially dry.	Abutment D Ÿ The old EP was removed immediately. Only the latest EP should be displayed. Ÿ Watering should be applied to the exposed area regularly.
24 September 2015	Abutment D Ÿ Stockpile was not well covered. Pier E9 Ÿ Excess soil was found in gutter. Ÿ Gutter was not properly installed. Barge Sai Hoi Ÿ A drip tray was not plugged. Ÿ A generator was not properly placed on decoupling pad.	Abutment D Ÿ Stockpile should be well covered. Pier E9 Ÿ Excess soil in gutter should be removed regularly. Ÿ Gutter should be properly installed. Barge Sai Hoi Ÿ Drip tray should be plugged. Ÿ Generator should be properly placed on decoupling pad.
29 September 2015	Pier E4 Ÿ A drip tray for generator was not plugged. Ÿ A generator was not well placed on decoupling pad. Ÿ No bund or gutter was found at the edge of platform. Pier E13AB Ÿ Surface water on platform was not well retained or collected.	Pier E4 Ÿ Drip tray for generator should be plugged. Ÿ Generator should be well placed on decoupling pad. Ÿ Surface runoff control measures should be provided on the platform. Pier E13AB Ÿ Surface runoff control measures should be provided on the platform.

Inspection Date

Environmental Observations

Recommendations/ Remarks

2 September 2015

Area 1

Ÿ Stagnant water was accumulated in a drip tray for generator.

Pier C13

Ÿ A skip for waste was full.

Area 1

Ÿ Stagnant water in drip tray should be removed.

Pier C13

Ÿ Waste should be cleaned up regularly.

9 September 2015

Pier A2

Ÿ A drip tray for generator was not plugged.

Ÿ Stagnant water was accumulated in gutter.

Ÿ Some chemical containers were not placed in drip tray.

Pier E9

Ÿ Stagnant water was accumulated in a drip tray for generator.

Pier A2

Ÿ Drip tray for generator should be plugged.

Ÿ Stagnant water in gutter should be cleaned up regularly.

Ÿ Chemical containers should be placed in drip tray.

Pier E9

Ÿ Stagnant water in drip tray should be removed.

16 September 2015

Abutment D

Ÿ An old EP was displayed.

Ÿ The exposed area was partially dry.

Abutment D

Ÿ The old EP was removed immediately. Only the latest EP should be displayed.

Ÿ Watering should be applied to the exposed area regularly.

24 September 2015

Abutment D

Ÿ Stockpile was not well covered.

Pier E9

Ÿ Excess soil was found in gutter.

Ÿ Gutter was not properly installed.

Barge Sai Hoi

Ÿ A drip tray was not plugged.

Ÿ A generator was not properly placed on decoupling pad.

Abutment D

Ÿ Stockpile should be well covered.

Pier E9

Ÿ Excess soil in gutter should be removed regularly.

Ÿ Gutter should be properly installed.

Barge Sai Hoi

Ÿ Drip tray should be plugged.

Ÿ Generator should be properly placed on decoupling pad.

29 September 2015

Pier E4

Ÿ A drip tray for generator was not plugged.

Ÿ A generator was not well placed on decoupling pad.

Ÿ No bund or gutter was found at the edge of platform.

Pier E13AB

Ÿ Surface water on platform was not well retained or collected.

Pier E4

Ÿ Drip tray for generator should be plugged.

Ÿ Generator should be well placed on decoupling pad.

Ÿ Surface runoff control measures should be provided on the platform.

Pier E13AB

Ÿ Surface runoff control measures should be provided on the platform.

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

2.6 Waste Management Status

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

Wastes generated during this reporting period include mainly construction wastes (inert and non-inert), recyclable materials and chemical wastes. Reference has been made to the waste flow table prepared by the Contractor (Appendix M). The quantities of different types of wastes are summarized in Table 2.15.

Table 2.15 Quantities of Different Waste Generated in the Reporting Period

Month/Year	Inert C&D Materials ^(a) (m³)	Imported Fill (m³)	Inert Construction Waste Re-used (m³)	Non-inert Construction Waste ^(b) (kg)	Recyclable Materials ^(c) (kg)	Chemical Wastes (kg)	Marine Sediment (m³)
							Category L	Category M (M_p & M_f)
September 2015	3,525	0	623	66,680	105	600	0	0
Notes:
(a) Inert construction wastes include hard rock and large broken concrete, and materials disposed as public fill. (b) Non-inert construction wastes include general refuse disposed at landfill. (c) Recyclable materials include metals, paper, cardboard, plastics, timber, felled trees and others.

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

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

2.7 Environmental Licenses and Permits

The status of environmental licensing and permit is summarized in Table 2.16 below.

Table 2.16 Summary of Environmental Licensing and Permit Status

License/ Permit	License or Permit No.	Date of Issue	Date of Expiry	License/ Permit Holder	Remarks
Environmental Permit	EP-354/2009/D	13 March 2015	N/A	HyD	Tuen Mun- Chek Lap Kok Link
Construction Dust Notification	361571	5 Jul 2013	N/A	GCL
Construction Dust Notification	362093	17 Jul 2013	N/A	GCL	For Area 23
Chemical Waste Registration	5213-961-G2380-13	10 Oct 2013	N/A	GCL	Chemical waste produced in Contract HY/2012/07 (Area 1 adjacent to Cheng Tung Road, Siu Ho Wan)
Chemical Waste Registration	5213-961-G2380-14	10 Oct 2013	N/A	GCL	Chemical waste produced in Contract HY/2012/07 (Area 2 adjacent to Cheung Tung Road, Pak Mong Village)
Chemical Waste Registration	5213-974-G2588-03	4 Nov 2013	N/A	GCL	Chemical waste produced in Contract HY/2012/07 (WA5 adjacent to Cheung Tung Road, Yam O)
Chemical Waste Registration	5213-951-G2380-17	12 Jun 2014	N/A	GCL	Viaducts A, B, C, D & E
Construction Waste Disposal Account	7017735	10 Jul 2013	N/A	GCL	-
Construction Waste Disposal Account	7019470	3 Mar 2014	N/A	GCL	Vessel CHIT Account
Waste Water Discharge License	WT00019017-2014	13 May 2014	31 May 2019	GCL	Discharge for marine portion
Waste Water Discharge License	WT00019018-2014	13 May 2014	31 May 2019	GCL	Discharge for land portion
Construction Noise Permit	Nil	N/A	N/A	GCL	For Piling Works
Construction Noise Permit for night works and works in general holidays	GW-RW0422-15	21 Aug 2015	25 Jan 2016	GCL	General works at WA5
Construction Noise Permit for night works and works in general holidays	GW-RS1054-15	30 Sep 2015	29 Mar 2016	GCL	For Load unload at NLH near Viaduct D
Construction Noise Permit for night works and works in general holidays	GW-RS0691-15	23 Jun 2015	22 Dec 2015	GCL	For Broad Permit
Construction Noise Permit for night works and works in general holidays	GW-RS0809-15	29 Jul 2015	29 Jan 2016	GCL	For Plant mobilization using tractor with trailer
Construction Noise Permit for night works and works in general holidays	GW-RS0911-15	27 Aug 2015	26 Feb 2016	GCL	Broad Permit for Seg. Launching at Land Portion
Construction Noise Permit for night works and works in general holidays	GW-RS0854-15	12 Aug 2014	15 Feb 2016	GCL	Pre-casted pile cap shell installation at E10-E13
Construction Noise Permit for night works and works in general holidays	GW-RS0769-15	15 Jul 2015	30 Sep 2015	GCL	TTA Case 009 Ch.2.1E-4.2E
Construction Noise Permit for night works and works in general holidays	GW-RS0855-15	12 Aug 2015	11 Feb 2016	GCL	Pier construction at C7, D8, D9
Construction Noise Permit for night works and works in general holidays	GW-RW0861-15	13 Aug 2015	30 Sep 2015	GCL	Portal beam installation at Pier D14
Marine Dumping Permit	EP/MD/16-089	22 Sep 2015	26 Oct 2015	GCL	For dumping Type I (Dedicated Site) and Type II sediment
Marine Dumping Permit	EP/MD/15-257	2 Apr 2015	7 Oct 2015	GCL	For dumping Type I sediment

Executive Summary

1 Introduction

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

1.2 Scope of Report

This is the Twenty-third Monthly EM&A Report under the Contract No. HY/2012/07 Tuen Mun – Chek Lap Kok Link – Southern Connection Viaduct Section. This report presents a summary of the environmental monitoring and audit works in September 2015.

1.4 Summary of Construction Works

The construction phase of the Contract commenced on 31 October 2013. The three-month rolling construction programme is shown in Appendix B.

As informed by the Contractor, details of the major works carried out in this reporting month are listed below:

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

2 EM&A Results

2.1.1 Monitoring Requirements and Equipment

2.1.2 Monitoring Schedule for the Reporting Month

The schedule for air quality monitoring in September 2015 is provided in Appendix F.

2.1.3 Results and Observations

The monitoring results for 1-hour TSP and 24-hour TSP are summarized in Tables 2.3 and 2.4 respectively. Detailed impact air quality monitoring results are presented in Appendix G.

The major dust sources in the reporting period included construction activities under the Contract as well as nearby traffic emissions.

2.2.1 Monitoring Requirements and Equipment

In accordance with the Updated EM&A Manual, impact noise monitoring was conducted once per week during the construction phase of the Contract. The Action and Limit level of the noise monitoring is provided in Appendix D.

2.2.2 Monitoring Schedule for the Reporting Month

The schedule for construction noise monitoring in the reporting period is provided in Appendix F.

2.2.3 Results and Observations

Results for noise monitoring are summarized in Table 2.7 and the monitoring data is provided in Appendix I.

No noise Action Level and Limit level exceedance was recorded in the reporting month. No action is thus required to be undertaken in accordance with the Event Action Plan presented in Appendix L.

Major noise sources during the noise monitoring included noise from crane operation and excavation works, nearby traffic noise and aircraft noise.

2.3.1 Monitoring Requirements and Equipment

The locations of the monitoring stations under the Contract are shown in Figure 2.3 and Table 2.8.

Table 2.9 summarises the equipment used in the impact water quality monitoring programme. Copies of the calibration certificates are attached in Appendix E.

2.3.2 Monitoring Schedule for the Reporting Month

The schedule for water quality monitoring in September 2015 is provided in Appendix F.

2.3.3 Results and Observations

In total of 13 monitoring events for impact water quality monitoring were conducted at all designated monitoring stations in the reporting month. Impact water quality monitoring results and graphical presentations are provided in Appendix J.

2.4 Dolphin monitoring

2.4.1 Monitoring Requirements

2.4.2 Monitoring equipment

Table 2.10 summarises the equipment used for the impact dolphin monitoring.

2.4.3 Monitoring Parameter, Frequencies and Duration

2.4.4 Monitoring Location

The impact dolphin monitoring was carried out in the NEL and NWL along the line transect as depicted in Figure 2.4. The co-ordinates of all transect lines are shown in Table 2.11 below.

2.4.5 Action & Limit Levels

2.4.6 Monitoring Schedule for the Reporting Month

Dolphin monitoring was carried out on 2, 11, 17 and 29 September 2015 (Appendix F).

2.4.7 Results and Observations

2.4.8 Marine Mammal Exclusion Zone Monitoring

2.5 EM&A Site inspection

Site inspections were carried out on a weekly basis to monitor the implementation of proper environmental pollution control and mitigation measures under the Contract. In the reporting month, five (5) site inspections were carried out on 2, 9, 16, 24 and 29 September 2015.

Key observations during the site inspections are summarized in Table 2.14.

2.6 Waste Management Status

2.7 Environmental Licenses and Permits

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

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

Results for water quality, 1-hour TSP, 24-hour TSP and construction noise monitoring complied with the Action/ Limit levels in the reporting period.

Cumulative statistics on exceedances is provided in Appendix N.

The Environmental Complaint Handling Procedure is provided in Figure 2.6

3 Future Key Issues

As informed by the Contractor, the major works for this Contract in October 2015 will be:

3.2 Key Issues for the Coming Month

The tentative schedules for environmental monitoring in October 2015 are provided in Appendix F.

4.1 Conclusions

Air quality (including 1-hour TSP and 24-hour TSP), noise, water quality, and dolphin monitoring were carried out in the reporting month. Results for water quality, 1-hour TSP, 24-hour TSP and noise monitoring complied with the Action and Limit levels in the reporting period.

Environmental site inspection was carried out five (5) times in September 2015. Recommendations on remedial actions were given to the Contractor for the deficiencies identified during the site audits.