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 (VEP) (EP-354/2009/A) was issued on 8 December 2010. Subsequent applications for variation of environmental permits (VEP), EP-354/2009/B, EP-354/2009/C and EP-354/2009/D, were granted on 28 January 2014, 10 December 2014 and 13 March 2015, respectively.

Under Contract No. HY/2012/08, Dragages – Bouygues Joint Venture (DBJV) is commissioned by the Highways Department (HyD) to undertake the design and construction of the Northern Connection Sub-sea Tunnel Section of TM-CLKL while AECOM Asia Company Limited was appointed by HyD as the Supervising Officer. For implementation of the environmental monitoring and audit (EM&A) programme under the Contract, ERM-Hong Kong, Limited (ERM) has been appointed as the Environmental Team (ET) in accordance with Environmental Permit No. EP-354/2009/A. Ramboll Hong Kong Ltd. was employed by HyD as the Independent Environmental Checker (IEC) and Environmental Project Office (ENPO).

Layout of the Contract components is presented in Figure 1.1.

The construction phase of the Contract commenced on 1 November 2013 and will tentatively be completed by the end of 2019. The impact monitoring phase of the EM&A programme, including air quality, water quality, marine ecological monitoring and environmental site inspections, were commenced on 1 November 2013.

1.2 Scope of Report

This is the Eighteenth Quarterly EM&A Report under the Contract No. HY/2012/08 Tuen Mun – Chek Lap Kok Link – Northern Connection Sub-sea Tunnel Section. This report presents a summary of the environmental monitoring and audit works from 1 March 2018 to 31 May 2018.

1.3 Organization Structure

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

Table 1.1 Contact Information of Key Personnel

Party	Position	Name	Telephone	Fax
Highways Department	Engr 22/HZMB	Chow Man Lung, Andrew	2762 4110	2762 4110
SOR (AECOM Asia Company Limited)	Chief Resident Engineer	Roger Man Andrew Westmoreland	2293 6388 2293 6360	2293 6300 2293 6300
ENPO / IEC (Ramboll Hong Kong Ltd.)	ENPO Leader	Y.H. Hui	3465 2850	3465 2899
ENPO / IEC (Ramboll Hong Kong Ltd.)	IEC	Dr. F.C. Tsang	3465 2851	3465 2899
Contractor (Dragages – Bouygues Joint Venture)	Environmental Officer	Bryan Lee	2293 7323	2293 7499
	24-hour complaint hotline	Rachel Lam	2293 7330
ET (ERM-HK)	ET Leader	Jovy Tam	2271 3113	2723 5660

1.4 Summary of Construction Works

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

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

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

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

Table 1.2 Summary of Construction Activities Undertaken during the Reporting Period

Construction Activities Undertaken
Land-based Works
· Box Culvert Extension at Works Area – Portion N-A; · Construction of North Ventilation Building – Portion N-C; · Construction of Cross Passage Tympanum – TBM tunnel; · Cross Passage Lining Installation – TBM Tunnel; · Cross Passage Construction by Pipe Jacking – TBM Tunnel; · Corbel & OVHD Construction – TBM Tunnel; · Parapet wall and fireboard Installation – TBM Tunnel; · Bulk Excavation – Portion S-A; and · CSM treatment, Jet Grouting works and D-wall Construction · Ground Freezing Works – Portion S-A

Construction Activities Undertaken

Land-based Works

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

· Construction of North Ventilation Building – Portion N-C;

· Construction of Cross Passage Tympanum – TBM tunnel;

· Cross Passage Lining Installation – TBM Tunnel;

· Cross Passage Construction by Pipe Jacking – TBM Tunnel;

· Corbel & OVHD Construction – TBM Tunnel;

· Parapet wall and fireboard Installation – TBM Tunnel;

· Bulk Excavation – Portion S-A; and

· CSM treatment, Jet Grouting works and D-wall Construction

· Ground Freezing Works – Portion S-A

Figure 1.2 Locations of Construction Activities – March to May 2018

fig 1

2 EM&A Results

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

2.1 Air quality

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

2.1.1 Monitoring Requirements and Equipment

In accordance with the Updated EM&A Manual and the Enhanced TSP Monitoring Plan, impact 1-hour TSP monitoring was conducted three (3) times in every six (6) days and impact 24-hour TSP monitoring was carried out once in every six (6) days when the highest dust impact was expected. 1-hr and 24-hr TSP monitoring frequency was increased to three times per day every three days and daily every three days respectively as excavation works for launching shaft commenced on 24 October 2014.

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

Table 2.1 Locations of Impact Air Quality Monitoring Stations and Monitoring Dates in this Reporting Period

Monitoring Station	Monitoring Dates	Location	Description	Parameters & Frequency
ASR1	2, 5, 8, 11, 14, 17, 20, 23, 26 and 29 March 2018	Tuen Mun Fireboat Station	Office	TSP monitoring Ÿ 1-hour Total Suspended Particulates (1-hour TSP, µg/m³), 3 times in every 6 days Ÿ 24-hour Total Suspended Particulates (24-hour TSP, µg/m³), daily for 24-hour in every 6 days Enhanced TSP monitoring (commenced on 24 October 2014) Ÿ 1-hour Total Suspended Particulates (1-hour TSP, µg/m³), 3 times in every 3 days Ÿ 24-hour Total Suspended Particulates (24-hour TSP, µg/m³), daily for 24-hour in every 3 days
ASR5	1, 4, 7, 10, 13, 16, 19, 22, 25 and 28 April 2018	Pillar Point Fire Station	Office
AQMS1	1, 4, 7, 10, 13, 16, 19, 22, 25, 28 and 31 May 2018	Previous River Trade Golf	Bare ground
ASR6		Butterfly Beach Laundry	Office
ASR10		Butterfly Beach Park	Recreational uses

Table 2.2 Air Quality Monitoring Equipment

Equipment	Brand and Model
High Volume Sampler (1-hour TSP and 24-hour TSP)	Tisch Environmental Mass Flow Controlled Total Suspended Particulate (TSP) High Volume Sampler (Model No. TE-5170)
Wind Meter	Davis (Model: Vantage Pro 2 (S/N: AS160104014)
Wind Anemometer for calibration	Lutron (Model No. AM-4201)

2.1.2 Action & Limit Levels

The Action and Limit Levels of the air quality monitoring is provided in Appendix D. The Event and Action plan is presented in Appendix H.

2.1.3 Monitoring Schedule for the Reporting Quarter

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

2.1.4 Results and Observations

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

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

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

Month/Year	Station	Average (µg/m³)	Range (µg/m³)	Action Level (µg/m³)	Limit Level (µg/m³)
March to May 2018	ASR 1	127	39 - 460	331	500
	ASR 5	162	57 - 389	340	500
	AQMS1	95	22 - 197	335	500
	ASR6	116	33 - 295	338	500
	ASR10	75	28 - 196	337	500

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

Month/Year	Station	Average (µg/m³)	Range (µg/m³)	Action Level (µg/m³)	Limit Level (µg/m³)
March to May 2018	ASR 1	86	30 - 176	213	260
	ASR 5	94	62 - 179	238	260
	AQMS1	63	36 - 124	213	260
	ASR6	75	43 - 164	238	260
	ASR10	54	24 - 132	214	260

Three (3) Action Level exceedances of 1-hour TSP were recorded in the air quality monitoring of this reporting period. Summary of Exceedances for Air Quality Impact Monitoring in this Reporting Quarter is detailed in Table 2.13.

2.2 Water Quality Monitoring

Seawall Enhancement Works at Northern Landfall has been completed on 31 December 2017. Notification of suspension of water quality monitoring has been approved by EPD on 2 March 2018. Water Quality Monitoring will be resumed prior to the start of Seawall Modification Works at Southern Landfall in January 2019.

2.3 Dolphin Monitoring

2.3.1 Monitoring Requirements

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

2.3.2 Monitoring Equipment

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

Table 2.5 Dolphin Monitoring Equipment

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

Equipment

Model

Global Positioning System (GPS)

Camera

Laser Binoculars

Marine Binocular

Vessel for Monitoring

Garmin 18X-PC

Geo One Phottix

Nikon D90 300m 2.8D fixed focus

Nikon D90 20-300m zoom lens

Infinitor LRF 1000

Bushell 7 x 50 marine binocular with compass and reticules

65 foot single engine motor vessel with viewing platform 4.5m above water level

2.3.3 Monitoring Parameter, Frequencies & Duration

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

2.3.4 Monitoring Location

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

Table 2.6 Impact Dolphin Monitoring Line Transect Co-ordinates

Line No.		Easting	Northing	Line No.		Easting	Northing
1	Start Point	804671	815456	13	Start Point	816506	819480
1	End Point	804671	831404	13	End Point	816506	824859
2	Start Point	805476	820800*	14	Start Point	817537	820220
2	End Point	805476	826654	14	End Point	817537	824613
3	Start Point	806464	821150*	15	Start Point	818568	820735
3	End Point	806464	822911	15	End Point	818568	824433
4	Start Point	807518	821500*	16	Start Point	819532	821420
4	End Point	807518	829230	16	End Point	819532	824209
5	Start Point	808504	821850*	17	Start Point	820451	822125
5	End Point	808504	828602	17	End Point	820451	823671
6	Start Point	809490	822150*	18	Start Point	821504	822371
6	End Point	809490	825352	18	End Point	821504	823761
7	Start Point	810499	822000*	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	821176	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	24*	Start Point	805476*	815900*
12	End Point	815542	824882	24*	End Point	805476*	819100*

Remarks: The coordinates of several starting and ending points have been revised since August 2017 due to the presence of a work zone to the north of the airport platform with intense construction activities in association with the construction of the third runway expansion for the Hong Kong International Airport. Co-ordinates in red and marked with asterisk are revised co-ordinates of transect line.

2.3.5 Action & Limit Levels

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

2.3.6 Monitoring Schedule for the Reporting Period

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

2.3.7 Results & Observations

A total of 791.83 km of survey effort was conducted, with 89.8% of the total survey effort being conducted under favourable weather conditions (ie Beaufort Sea State 3 or below with good visibility) in this reporting quarter. Amongst the two areas, 290.90 km and 500.93 km of survey effort were conducted from NEL and NWL survey areas, respectively. The total survey effort conducted on primary and secondary lines were 576.61 km and 215.22 km, respectively. The survey efforts are summarized in Appendix G.

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

Table 2.7 Individual Survey Event Encounter Rates

		Encounter rate (STG) (no. of on-effort dolphin sightings per 100 km of survey effort)	Encounter rate (ANI) (no. of dolphins from all on-effort sightings per 100 km of survey effort)
		Primary Lines Only	Primary Lines Only
NEL	Set 1 (8 & 12 Mar)	0.00	0.00
	Set 2 (20 & 23 Mar)	0.00	0.00
	Set 3 (10 & 17 Apr)	0.00	0.00
	Set 4 (19 & 25 Apr)	0.00	0.00
	Set 5 (7 & 10 May)	0.00	0.00
	Set 6 (16 & 30 May)	0.00	0.00
NWL	Set 1 (8 & 12 Mar)	1.73	5.19
	Set 2 (20 & 23 Mar)	12.32	56.69
	Set 3 (10 & 17 Apr)	0.00	0.00
	Set 4 (19 & 25 Apr)	3.24	4.87
	Set 5 (7 & 10 May)	0.00	0.00
	Set 6 (16 & 30 May)	0.00	0.00

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

Table 2.8 Quarterly Average Encounter Rates

	Encounter rate (STG) (no. of on-effort dolphin sightings per 100 km of survey effort)		Encounter rate (ANI) (no. of dolphins from all on-effort sightings per 100 km of survey effort)
	March – May 2018	September – November 2011	March – May 2018	September – November 2011
Northeast Lantau	0.0	6.00 ± 5.05	0.0	22.19 ± 26.81
Northwest Lantau	2.88 ± 4.81	9.85 ± 5.85	11.12 ± 22.46	44.66 ± 29.85

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

Table d 4.6

Group size of Chinese White Dolphins ranged from 1 - 8 individuals per group in North Lantau region during March to May 2018. The average dolphin group sizes from these three months were compared with the ones deduced from the baseline period in September to November 2011, as shown in Table 2.9.

Table 2.9 Average Dolphin Group Size

	Average Dolphin Group Size
	March – May 2018	September – November 2011
Overall	3.33 ± 3.39 (n = 9)	3.72 ± 3.13 (n = 66)
Northeast Lantau	---	3.18 ± 2.16 (n = 17)
Northwest Lantau	3.33 ± 3.39 (n = 9)	3.92 ± 3.40 (n = 49)

Whilst one limit level exceedance was observed for the quarterly dolphin monitoring data between March and May 2018, no unacceptable impact from the construction activities of this Contract was recorded from the general observations.

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

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

2.3.8 Implementation of Marine Mammal Exclusion Zone

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

2.4 EM&A Site Inspection

Site inspections were carried out on a weekly basis to monitor the implementation of proper environmental pollution control and mitigation measures under the Contract. Thirteen (13) site inspections were carried out in the reporting quarter on 7, 14, 21 and 28 March 2018; 4, 11, 18 and 25 April 2018; 2, 9, 16, 23 and 30 May 2018.

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

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

Inspection Date	Environmental Observations	Recommendations/ Remarks
7 March 2018	Works Area – Portion N-C Ÿ Accumulated waste in the waste container should be removed. Ÿ Drip tray should be provided for the oil drum. Ÿ Cement bags should be covered with tarpaulin sheeting. Works Area – Portion S-A Ÿ U-channel should be installed for collection of rainwater. Reminder from SOR Works Area – Portion S-A Ÿ The tip of excavator should be mounted with noise absorbent.	Works Area – Portion N-C Ÿ The Contractor was reminded to remove the accumulated waste in the waste container. Ÿ The Contractor was reminded to provide drip tray for the oil drum. Ÿ The Contractor was reminded to cover the cement bags with tarpaulin sheeting. Works Area – Portion S-A Ÿ The Contractor was reminded to install U-channel for collection of rainwater. Reminder from SOR Works Area – Portion S-A Ÿ The Contractor was reminded to mount the tip of excavator with noise absorbent.
14 March 2018	Works Area – TBM tunnel Ÿ Drip tray should be provided for the chemical containers. Ÿ Cement bags should be covered with tarpaulin sheeting. Works Area –Portion S-B Ÿ Cement bags should be covered with tarpaulin sheeting. Ÿ Drip tray should be provided for the chemical containers. Ÿ Drip tray should be provided for the chemical containers.	Works Area – TBM tunnel Ÿ The Contractor was reminded to provide drip tray for the chemical containers. Ÿ The Contractor was reminded to cover the cement bags with tarpaulin sheeting. Works Area –Portion S-B Ÿ The Contractor was reminded to cover the cement bags with tarpaulin sheeting. Ÿ The Contractor was reminded to provide drip tray for the chemical containers. Ÿ The Contractor was reminded to provide drip tray for the chemical containers.
21 March 2018	Works Area – Portion N-C Ÿ Drip tray should be provided for the chemical containers. Ÿ Cement bags should be covered with tarpaulin sheeting. Works Area - Portion N-A Ÿ Drip tray should be provided for the chemical containers. Works Area - Portion S-A Ÿ The top and 3 sides of the grout mixer should be enclosed with impervious sheeting. Ÿ Drip tray should be provided for the oil drums.	Works Area – Portion N-C Ÿ The Contractor was reminded to provide drip tray for the chemical containers. Ÿ The Contractor was reminded to cover the cement bags with tarpaulin sheeting. Works Area - Portion N-A Ÿ The Contractor was reminded to provide drip tray for the chemical containers. Works Area - Portion S-A Ÿ The Contractor was reminded to enclose the top and 3 sides of the grout mixer with impervious sheeting. Ÿ The Contractor was reminded to provide drip tray for the oil drums.
28 March 2018	Works Area - Portion N-C Ÿ Drip tray should be provided for the chemical containers. Works Area - Portion N-A Ÿ Dusty material should be covered with tarpaulin sheets. Ÿ Proper NRMM label should be displayed. Works Area - Portion S-C Ÿ The cement bags should be covered with impervious sheeting. Works Area - Portion S-B Ÿ Drip tray should be provided for the chemical containers. Ÿ Drip tray should be provided for the chemical containers. Ÿ The chemical should be stored properly..	Works Area - Portion N-C Ÿ The Contractor was reminded to provide drip tray for the chemical containers. Works Area - Portion N-A Ÿ The Contractor was reminded to cover the dusty mateiral with tarpaulin sheetings. Ÿ The Contractor was reminded to display proper NRMM label. Ÿ Works Area - Portion S-C Ÿ The Contractor was reminded to cover the cement bags with impervious sheeting. Works Area - Portion S-B Ÿ The Contractor was reminded to provide drip tray for the chemical containers. Ÿ The Contractor was reminded to provide drip tray for the chemical containers. Ÿ The Contractor was reminded to store the chemical properly.
4 April 2018	Works Area – Portion S-B Ÿ The cement bags should be covered with impervious sheeting. Works Area – Portion N-C Ÿ Stagnant water should be pumped off to avoid mosquito larva breeding.	Works Area – Portion S-B Ÿ The Contractor was reminded to cover the cement bags with impervious sheeting. Works Area – Portion N-C Ÿ The Contractor was reminded to pump off the stagnant water to avoid mosquito breeding.
11 April 2018	Works Area – Portion S-B Ÿ Drip tray should be provided to the chemical containers. Works Area – Portion N-C Ÿ Stagnant water should be pumped off to avoid mosquito larva breeding. Works Area – Portion N-A Ÿ Proper NRMM label should be displayed. Reminder from SOR Works Area - Portion S-B Ÿ The broken water barriers should be replaced.	Works Area – Portion S-B Ÿ The Contractor was reminded to provide drip tray to the chemical containers. Works Area – Portion N-C Ÿ The Contractor was reminded to pump off the stagnant water to avoid mosquito breeding. Works Area – Portion N-A Ÿ The Contractor was reminded to display proper NRMM label. Reminder from SOR Works Area - Portion S-B Ÿ The Contractor was reminded to replace the broken barriers.
18 April 2018	Works Area – TBM tunnel Ÿ Drip tray should be provided for the chemical containers. Works Area - Portion S-B Ÿ NRMM label should be displayed on the generator.	Works Area – TBM tunnel Ÿ The Contractor was reminded to provide drip tray to the chemical containers. Works Area - Portion S-B Ÿ The Contractor was reminded to display NRMM label on the generator.
25 April 2018	Works Area - Portion S-B Ÿ Proper NRMM label should be displayed on the excavator. Ÿ Drip tray should be provided for the chemical containers Works Area - Portion N-C Ÿ Faded NRMM label should be replaced by standard NRMM label.	Works Area - Portion S-B Ÿ The Contractor was reminded to display proper NRMM label on the excavator. Ÿ The Contractor was reminded to provide drip tray for the chemical containers. Works Area - Portion N-C Ÿ The Contractor was reminded to replace the faded NRMM label with standard NRMM label.
2 May 2018	Works Area – Portion S-B Ÿ Stagnent water on the oil drum should be removed. Works Area – Portion S-A Ÿ Drip tray should be provided for the oil drums. Works Area – TBM tunnel Ÿ Cement bags should be covered with impervious sheeting. Ÿ Drip tray should be provided for the chemical containers. Ÿ Drip tray should be provided for the chemical containers.	Works Area – Portion S-B Ÿ The Contractor was reminded to remove stagnent water on the oil drum. Works Area – Portion S-A Ÿ The Contractor was reminded to provide drip tray for the oil drums. Works Area – TBM tunnel Ÿ The Contractor was reminded to cover the cement bags with impervious sheeting. Ÿ The Contractor was reminded to provide drip tray for the chemical containers. Ÿ The Contractor was reminded to provide drip tray for the chemical containers.
9 May 2018	Works Area – Portion S-B Ÿ General refuse should be removed. Works Area – Portion N-C Ÿ Drip tray should be provided for the chemical containers. Works Area – Portion N-A Ÿ The faded NRMM should be replaced by the standard NRMM label.	Works Area – Portion S-B Ÿ The Contractor was reminded to remove the general refuse. Works Area – Portion N-C Ÿ The Contractor was reminded to provide drip tray for the chemical containers. Works Area – Portion N-A Ÿ The Contractor was reminded to replace the faded NRMM label with the standard NRMM label.
16 May 2018	Works Area – Portion N-A Ÿ Stagnant water in the drip tray should be removed. Reminder from the SOR Works Area - Portion S-A Ÿ The tip of the excavator should be enclosed with noise abatement material.	Works Area – Portion N-A Ÿ The Contractor was reminded to remove the stagnant water in the drip tray. Reminder from the SOR Works Area - Portion S-A Ÿ The Contractor was reminded to enclose the tip of the excavator with noise abatement mateiral.
23 May 2018	Works Area - Portion N-C Ÿ Drip tray should be provided to the chemical containers. Ÿ Cement bags should be covered with tarpaulin sheets. Works Area - Portion S-A Ÿ Stagnant water in the drip tray should be removed. Works Area - Portion S-B Ÿ Accumulated rubbish in the skip should be removed.	Works Area - Portion N-C Ÿ The Contractor was reminded to provide drip tray to the chemical containers. Ÿ The Contractor was reminded to cover the cement nags with tarpaulin sheets. Works Area - Portion S-A Ÿ The Contractor was reminded to remove the stagnant water in the drip tray. Works Area - Portion S-B Ÿ The Contractor was reminded to remove the accumulated rubbish in the skip.
30 May 2018	Works Area - Portion N-C Ÿ Cement bags should be covered with tarpaulin sheets. Works Area - Portion N-A Ÿ Water spraying should be applied more frequently during dry conditions. Ÿ The slope surface should be covered with impervious sheeting. Works Area - Portion S-B Ÿ Cement bags should be covered with tarpaulin sheets. Ÿ Stagnant water should be removed. Ÿ Water spraying should be applied more frequently during dry conditions. Ÿ The slope surface should be covered with impervious sheeting. Reminder from the SOR: Works Area - Portion S-B The breaker tip should be wrapped with soundproof mat.	Works Area - Portion N-C Ÿ The Contractor was reminded to cover the cement bags with tarpaulin sheets. Works Area - Portion N-A Ÿ The Contractor was reminded to apply water spraying more frequently during dry conditions. Ÿ The Contractor was reminded to cover the slope surface with impervious sheeting. Works Area - Portion S-B Ÿ The Contractor was reminded to cover the cement bags with tarpaulin sheets. Ÿ The Contractor was reminded to remove the stagnant water. Ÿ The Contractor was reminded to apply water spraying more frequently during dry conditions. Ÿ The Contractor was reminded to cover the slope surface with impervious sheeting. Reminder from the SOR: Works Area - Portion S-B The Contractor was reminder to wrap the breaker tip with soundproof mat.

Inspection Date

Environmental Observations

Recommendations/ Remarks

7 March 2018

Works Area – Portion N-C

Ÿ Accumulated waste in the waste container should be removed.

Ÿ Drip tray should be provided for the oil drum.

Ÿ Cement bags should be covered with tarpaulin sheeting.

Works Area – Portion S-A

Ÿ U-channel should be installed for collection of rainwater.

Reminder from SOR

Works Area – Portion S-A

Ÿ The tip of excavator should be mounted with noise absorbent.

Works Area – Portion N-C

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

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

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

Works Area – Portion S-A

Ÿ The Contractor was reminded to install U-channel for collection of rainwater.

Reminder from SOR

Works Area – Portion S-A

Ÿ The Contractor was reminded to mount the tip of excavator with noise absorbent.

14 March 2018

Works Area – TBM tunnel

Ÿ Drip tray should be provided for the chemical containers.

Ÿ Cement bags should be covered with tarpaulin sheeting.

Works Area –Portion S-B

Ÿ Cement bags should be covered with tarpaulin sheeting.

Ÿ Drip tray should be provided for the chemical containers.

Works Area – TBM tunnel

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

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

Works Area –Portion S-B

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

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

21 March 2018

Works Area – Portion N-C

Ÿ Drip tray should be provided for the chemical containers.

Ÿ Cement bags should be covered with tarpaulin sheeting.

Works Area - Portion N-A

Ÿ Drip tray should be provided for the chemical containers.

Works Area - Portion S-A

Ÿ The top and 3 sides of the grout mixer should be enclosed with impervious sheeting.

Ÿ Drip tray should be provided for the oil drums.

Works Area – Portion N-C

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

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

Works Area - Portion N-A

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

Works Area - Portion S-A

Ÿ The Contractor was reminded to enclose the top and 3 sides of the grout mixer with impervious sheeting.

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

28 March 2018

Works Area - Portion N-C

Ÿ Drip tray should be provided for the chemical containers.

Works Area - Portion N-A

Ÿ Dusty material should be covered with tarpaulin sheets.

Ÿ Proper NRMM label should be displayed.

Works Area - Portion S-C

Ÿ The cement bags should be covered with impervious sheeting.

Works Area - Portion S-B

Ÿ Drip tray should be provided for the chemical containers.

Ÿ The chemical should be stored properly..

Works Area - Portion N-C

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

Works Area - Portion N-A

Ÿ The Contractor was reminded to cover the dusty mateiral with tarpaulin sheetings.

Ÿ The Contractor was reminded to display proper NRMM label.

Ÿ Works Area - Portion S-C

Ÿ The Contractor was reminded to cover the cement bags with impervious sheeting.

Works Area - Portion S-B

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

Ÿ The Contractor was reminded to store the chemical properly.

4 April 2018

Works Area – Portion S-B

Ÿ The cement bags should be covered with impervious sheeting.

Works Area – Portion N-C

Ÿ Stagnant water should be pumped off to avoid mosquito larva breeding.

Works Area – Portion S-B

Ÿ The Contractor was reminded to cover the cement bags with impervious sheeting.

Works Area – Portion N-C

Ÿ The Contractor was reminded to pump off the stagnant water to avoid mosquito breeding.

11 April 2018

Works Area – Portion S-B

Ÿ Drip tray should be provided to the chemical containers.

Works Area – Portion N-C

Ÿ Stagnant water should be pumped off to avoid mosquito larva breeding.

Works Area – Portion N-A

Ÿ Proper NRMM label should be displayed.

Reminder from SOR

Works Area - Portion S-B

Ÿ The broken water barriers should be replaced.

Works Area – Portion S-B

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

Works Area – Portion N-C

Ÿ The Contractor was reminded to pump off the stagnant water to avoid mosquito breeding.

Works Area – Portion N-A

Ÿ The Contractor was reminded to display proper NRMM label.

Reminder from SOR

Works Area - Portion S-B

Ÿ The Contractor was reminded to replace the broken barriers.

18 April 2018

Works Area – TBM tunnel

Ÿ Drip tray should be provided for the chemical containers.

Works Area - Portion S-B

Ÿ NRMM label should be displayed on the generator.

Works Area – TBM tunnel

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

Works Area - Portion S-B

Ÿ The Contractor was reminded to display NRMM label on the generator.

25 April 2018

Works Area - Portion S-B

Ÿ Proper NRMM label should be displayed on the excavator.

Ÿ Drip tray should be provided for the chemical containers

Works Area - Portion N-C

Ÿ Faded NRMM label should be replaced by standard NRMM label.

Works Area - Portion S-B

Ÿ The Contractor was reminded to display proper NRMM label on the excavator.

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

Works Area - Portion N-C

Ÿ The Contractor was reminded to replace the faded NRMM label with standard NRMM label.

2 May 2018

Works Area – Portion S-B

Ÿ Stagnent water on the oil drum should be removed.

Works Area – Portion S-A

Ÿ Drip tray should be provided for the oil drums.

Works Area – TBM tunnel

Ÿ Cement bags should be covered with impervious sheeting.

Ÿ Drip tray should be provided for the chemical containers.

Works Area – Portion S-B

Ÿ The Contractor was reminded to remove stagnent water on the oil drum.

Works Area – Portion S-A

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

Works Area – TBM tunnel

Ÿ The Contractor was reminded to cover the cement bags with impervious sheeting.

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

9 May 2018

Works Area – Portion S-B

Ÿ General refuse should be removed.

Works Area – Portion N-C

Ÿ Drip tray should be provided for the chemical containers.

Works Area – Portion N-A

Ÿ The faded NRMM should be replaced by the standard NRMM label.

Works Area – Portion S-B

Ÿ The Contractor was reminded to remove the general refuse.

Works Area – Portion N-C

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

Works Area – Portion N-A

Ÿ The Contractor was reminded to replace the faded NRMM label with the standard NRMM label.

16 May 2018

Works Area – Portion N-A

Ÿ Stagnant water in the drip tray should be removed.

Reminder from the SOR

Works Area - Portion S-A

Ÿ The tip of the excavator should be enclosed with noise abatement material.

Works Area – Portion N-A

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

Reminder from the SOR

Works Area - Portion S-A

Ÿ The Contractor was reminded to enclose the tip of the excavator with noise abatement mateiral.

23 May 2018

Works Area - Portion N-C

Ÿ Drip tray should be provided to the chemical containers.

Ÿ Cement bags should be covered with tarpaulin sheets.

Works Area - Portion S-A

Ÿ Stagnant water in the drip tray should be removed.

Works Area - Portion S-B

Ÿ Accumulated rubbish in the skip should be removed.

Works Area - Portion N-C

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

Ÿ The Contractor was reminded to cover the cement nags with tarpaulin sheets.

Works Area - Portion S-A

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

Works Area - Portion S-B

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

30 May 2018

Works Area - Portion N-C

Ÿ Cement bags should be covered with tarpaulin sheets.

Works Area - Portion N-A

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

Ÿ The slope surface should be covered with impervious sheeting.

Works Area - Portion S-B

Ÿ Cement bags should be covered with tarpaulin sheets.

Ÿ Stagnant water should be removed.

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

Ÿ The slope surface should be covered with impervious sheeting.

Reminder from the SOR:

Works Area - Portion S-B

The breaker tip should be wrapped with soundproof mat.

Works Area - Portion N-C

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

Works Area - Portion N-A

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

Ÿ The Contractor was reminded to cover the slope surface with impervious sheeting.

Works Area - Portion S-B

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

Ÿ The Contractor was reminded to remove the stagnant water.

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

Ÿ The Contractor was reminded to cover the slope surface with impervious sheeting.

Reminder from the SOR:

Works Area - Portion S-B

The Contractor was reminder to wrap the breaker tip with soundproof mat.

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

2.5 Waste Management Status

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

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

Table 2.11 Quantities of Different Waste Generated in the Reporting Period

Month/Year	Inert Construction Waste ^(a) (tonnes)	Inert Construction Waste Re-used (tonnes)	Non-inert Construction Waste ^(b) (tonnes)	Imported Fill (tonnes) ^(d)	Recyclable Materials ^(c) (kg)	Chemical Wastes (kg)	Marine Sediment (m³)
Month/Year	Inert Construction Waste ^(a) (tonnes)	Inert Construction Waste Re-used (tonnes)	Non-inert Construction Waste ^(b) (tonnes)		Recyclable Materials ^(c) (kg)	Chemical Wastes (kg)	Category L	Category M (M_p & M_f)
March 2018	66,457	62,247	459	0	229,360	2,000	0	6,195
April 2018	123,942	50,648	281	56,192.51	195,550	8,600	0	1,957
May 2018	127,964	62,822	686	13,289	93,310	0	0	177
	Notes:
	(a) Inert construction wastes include hard rock and large broken concrete, and materials disposed as public fill. (b) Non-inert construction wastes include general refuse disposed at landfill. (c) Recyclable materials include metals, paper, cardboard, plastics, timber and others. (d) The origin of imported fill is from Contract No. HY/2013/03.

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

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

2.6 Environmental Licenses and Permits

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

License/ Permit	License or Permit No.	Date of Issue	Date of Expiry	License/ Permit Holder	Remarks
Environmental Permit	EP-354/2009/D	13 March 2015	Throughout the Contract	HyD	Application for VEP on 3 March 2015 to supersede EP-354/2009/C
Construction Dust Notification	363510	19 August 2013	Throughout the Contract	DBJV	Northern Landfall
Construction Dust Notification	403620	10 June 2016	Throughout the Contract	DBJV	Southern Landfall
Chemical Waste Registration	5213-422-D2516-02	18 January 2017	Throughout the Contract	DBJV	Northern Landfall
Chemical Waste Registration	5213-951-D2591-01	25 May 2016	Throughout the Contract	DBJV	Southern Landfall
Construction Waste Disposal Account	7018108	28 August 2013	Throughout the Contract	DBJV	Waste disposal in Contract No. HY/2012/08
Construction Waste Disposal Account	7021715	17 April 2018	17 July 2018	DBJV	Vessel Disposal
Waste Water Discharge License	WT00017707-2013	18 November 2013	30 November 2018	DBJV	For site WA18
Waste Water Discharge License	WT00019248-2014	5 June 2014	30 June 2019	DBJV	For site Portion N6 and Reclamation Area E
Waste Water Discharge License	WT00025944-2016	15 December 2016	31 December 2021	DBJV	Southern Landfall
Marine Dumping Permit	EP/MD/19-001	24 April 2018	23 May 2018	DBJV	Type 1 (Dedicated site) and Type 2 (Confined Marine Disposal)
Marine Dumping Permit	EP/MD/18-125	21 February 2018	20 March 2018	DBJV	Type 1 (Dedicated site) and Type 2 (Confined Marine Disposal)
Marine Dumping Permit	EP/MD/18-133	22 March 2018	21 April 2018	DBJV	Type 1 (Dedicated site) and Type 2 (Confined Marine Disposal)
Marine Dumping Permit	EP/MD/19-001	28 May 2018	27 June 2018	DBJV	Type 1 (Dedicated site) and Type 2 (Confined Marine Disposal)
Construction Noise Permit	GW-RW0538-17	16 April 2018	15 October 2018	DBJV	For Urmston Road in front of Pillar Point
Construction Noise Permit	GW-RW0641-17	16 December 2017	6 December 2018	DBJV	WA23 @ Tsing Yi
Construction Noise Permit	PP-RS0026-17	3 April 2017	31 July 2018	DBJV	Southern Landfall (Percussive Piling)
Construction Noise Permit	GW-RS0878-17	11 October 2017	2 April 2018	DBJV	Southern Landfall
Construction Noise Permit	GW-RW0060-18	20 February 2018	19 August 2018	DBJV	WA23 @ Tsing Yi
Construction Noise Permit	GW-RS0027-18	22 January 2018	14 July 2018	DBJV	Southern Landfall
Notes:
HyD = Highways Department DBJV = Dragages – Bouygues Joint Venture VEP = Variation of Environmental Permit

2.7 Implementation Status of Environmental Mitigation Measures

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

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

2.8 Summary of Exceedances of the Environmental Quality Performance Limit

For air quality impact monitoring, a total of thirty-one monitoring events for both 1-hour TSP and 24-hour TSP were undertaken in which three (3) Action Level exceedances of 1-hour TSP were recorded in the air quality monitoring of this reporting period. (Table 2.13).

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

Station	Exceedance Level	Date of Exceedances		Number of Exceedances
Station	Exceedance Level	1-hr TSP	24-hr TSP	1-hr TSP	24-hr TSP
QMS1	Action Level	-	-	-	-
QMS1	Limit Level	-	-	-	-
ASR1	Action Level	2018-03-02	-	1	-
		2018-03-20	-	1	-
	Limit Level	-	-	-	-
ASR5	Action Level	2018-04-13	-	1	-
ASR5	Limit Level	-	-	-	-
ASR6	Action Level	-	-	-	-
ASR6	Limit Level	-	-	-	-
ASR10	Action Level	-	-	-	-
ASR10	Limit Level	-	-	-	-
Total number of Action level Exceedances:				3	0
Total number of Limit level Exceedances:				0	0

One (1) Limit Level exceedance was observed for the quarterly dolphin monitoring data between March and May 2018, whilst no unacceptable impact from the construction activities of the TM-CLKL Northern Connection Sub-sea Tunnel Section on Chinese White Dolphins was noticeable from general observations.

Cumulative statistics are provided in Appendix I.

2.9 Summary of Complaints, Notification of Summons and Successful Prosecutions

The Environmental Complaint Handling Procedure is provided in Figure 2.3.

No environmental complaint was received in this reporting period.

No environmental summons was received in this reporting period.

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

3 Future Key Issues

3.1 Construction Activities for the Coming Quarter

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

Table 3.1 Construction Works to Be Undertaken in the Coming Quarter

Works to be undertaken
Land-based Works · Box Culvert Extension at Works Area – Portion N-A; · Construction of North Ventilation Building – Portion N-C; · Construction of Cross Passage Tympanum – TBM tunnel; · Cross Passage Lining Installation – TBM Tunnel; · Excavation of Sub-sea Tunnel – TBM tunnel; · Parapet wall and fireboard Installation – TBM Tunnel · Corbel Construction – TBM Tunnel; · Bulk Excavation – Portion S-A; · TBM Excavation – Portion S-A; and · CSM treatment, Jet Grouting works and D-wall Construction

Works to be undertaken

Land-based Works

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

· Construction of North Ventilation Building – Portion N-C;

· Construction of Cross Passage Tympanum – TBM tunnel;

· Cross Passage Lining Installation – TBM Tunnel;

· Excavation of Sub-sea Tunnel – TBM tunnel;

· Parapet wall and fireboard Installation – TBM Tunnel

· Corbel Construction – TBM Tunnel;

· Bulk Excavation – Portion S-A;

· TBM Excavation – Portion S-A; and

· CSM treatment, Jet Grouting works and D-wall Construction

3.2 Key Issues for the Coming Quarter

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

3.3 Monitoring Schedule for the Coming Quarter

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

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

4 Conclusions

This Eighteenth Quarterly EM&A Report presents the findings of the EM&A activities undertaken during the period from 1 March 2018 to 31 May 2018, in accordance with the Updated EM&A Manual and the requirements of EP-354/2009/D.

Air quality (including 1-hour TSP and 24-hour TSP and dolphin monitoring were carried out in the reporting period. Three (3) Action Level exceedances of 1-hour TSP were recorded in the air quality monitoring of this reporting period.

A total of 9 groups of 30 Chinese White Dolphins sightings were recorded during the six sets of surveys in this reporting quarter. All dolphin sightings were made during on-effort search, and eight of the nine on-effort dolphin sightings were made on primary lines. Whilst one limit level exceedance was observed for the quarterly dolphin monitoring data between March and May 2018, no unacceptable impact from the construction activities of this Contract was recorded from the general observations. Although the dolphins infrequently occurred along the alignment of TM-CLKL Northern Connection Sub-Sea Tunnel Section in the past and during the baseline monitoring period, it is apparent that dolphin usage has been significantly reduced in NEL. It is critical to monitor the dolphin usage in North Lantau region in the upcoming quarters, to determine whether the dolphins are continuously affected by the various construction activities in relation to the construction works of the Contract, and whether suitable mitigation measure can be applied to improve the situation.

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

The monitoring programme has been reviewed and was considered as adequate to cater for the nature of works in progress. Change to the monitoring programme was thus not recommended at this stage. The monitoring programme will be evaluated as appropriate in the next reporting period. The ET will keep track on the construction works to confirm compliance of environmental requirements and the proper implementation of all necessary mitigation measures.

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

Appendix A Project Organization

Appendix B Construction Programme

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

Appendix D Action And Limit Levels

Appendix E Monitoring Schedule

Appendix F Air Quality Monitoring Results

Appendix G Impact Dolphin Monitoring

Appendix H Event And Action Plan

Appendix I Cumulative Statistics On Exceedance And Complaint

Appendix J Waste Flow Table

Executive Summary

1 Introduction

This is the Eighteenth Quarterly EM&A Report under the Contract No. HY/2012/08 Tuen Mun – Chek Lap Kok Link – Northern Connection Sub-sea Tunnel Section. This report presents a summary of the environmental monitoring and audit works from 1 March 2018 to 31 May 2018.

1.3 Organization Structure

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

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

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

2 EM&A Results

2.1.1 Monitoring Requirements and Equipment

2.1.2 Action & Limit Levels

2.1.3 Monitoring Schedule for the Reporting Quarter

2.1.4 Results and Observations

2.2 Water Quality Monitoring

2.3.1 Monitoring Requirements

2.3.2 Monitoring Equipment

2.3.3 Monitoring Parameter, Frequencies & Duration

2.3.4 Monitoring Location

2.3.5 Action & Limit Levels

2.3.6 Monitoring Schedule for the Reporting Period

2.3.7 Results & Observations

2.3.8 Implementation of Marine Mammal Exclusion Zone

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

3 Future Key Issues

3.2 Key Issues for the Coming Quarter

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

4 Conclusions