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 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) in accordance with Environmental Permit No. EP-354/2009/A. ENVIRON Hong Kong Ltd. was employed by HyD as the Independent Environmental Checker (IEC) and Environmental Project Office (ENPO). Another application for variation of environmental permit (VEP) (EP-354/2009/B) was granted on 28 January 2014.

The construction phase of the Project under the EP-354/2009/A and the subsequent VEP (EP-354/2009/B) commenced on 1 November 2013 and will tentatively be completed by the end of 2018. The impact monitoring of the EM&A programme, including air quality, water quality, marine ecological monitoring and environmental site inspections, were commenced on 1 November 2013.

This is the fourth monthly EM&A report presenting the EM&A works carried out during the period from 1 to 28 February 2014 for the Contract No. HY/2012/08 Northern Connection Sub-sea Tunnel Section (the “Project”) 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-based Works

· Dredging;

· Vertical Seawall construction;

· Sloping Seawall construction;

· Temporary pontoon installation at River Trade Terminal (RTT); and

· Marine Sheet Piling for Box Culvert extension.

Land-based Works

· WA 18 Site office construction;

· CLP Substation structure works; and

· CLP Substation E&M works.

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

Impact Water Quality Monitoring 12 sessions

Impact Dolphin Monitoring 2 sessions

Joint Environmental Site Inspection 4 sessions

Daily marine mammal exclusion zone monitoring was undertaken during the period of dredging works. One sighting of the Indo-Pacific humpback dolphin Sousa chinensis was recorded on 20^th February 2014 during the exclusion zone monitoring. The dolphin group of three was sighted within the 250 m marine mammal exclusion zone from a dredging barge sighting platform by the marine mammal observer. The marine dredging work was subsequently suspended until the observer has confirmed that the area is continuously clear of dolphins for a period of 30 minutes.

Summary of Breaches of Action/Limit Levels

Breaches of Action and Limit Levels for Air Quality

Two Action Level exceedances for 1-hr TSP while no exceedance for 24-hr TSP in air quality monitoring were recorded during the reporting month. The Project works were unlikely to be the major cause of the recorded exceedances upon further investigation.

Breaches of Action and Limit Levels for Water Quality

No exceedances were recorded during the reporting month.

Dolphin Monitoring

Whilst one Action Level exceedance was observed for the quarterly dolphin monitoring data between December 2013 and February 2014, 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 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 unacceptable impacts on dolphins have been detected related to the construction activities of the TM-CLKL Northern Connection Sub-sea Tunnel 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.

Environmental Complaints, Non-compliance & Summons

No non-compliance with EIA recommendations, EP conditions and other requirements associated with the construction of this Contract was recorded in this reporting period.

No environmental complaint was received in this reporting period.

No environmental summons was received in this reporting period.

Reporting Change

There was no reporting change required in the reporting period.

Upcoming Works for the Next Reporting Period

Works to be undertaken in the next monitoring period of March 2014 include the following:

Marine-based Works

· Dredging;

· Reclamation;

· Vertical Seawall construction;

· Sloping Seawall construction;

· Marine Sheet Piling for Box Culvert extension; and

· Predrilling for Box culvert Foundation.

Land-based Works

· AECOM site office construction;

· CLP Substation Footing & underground utilities works; and

· CLP Substation Superstructure.

Future Key Issues

Potential environmental impacts arising from the above upcoming construction activities in the next reporting month of March 2014 are expected to be mainly associated with dust, marine water quality, marine ecology and waste management.

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-145/2009), 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-354/2009A) was issued on 8 December 2010. Another application for VEP (EP-354/2009/B) was granted on 28 January 2014.

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 (“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) in accordance with Environmental Permit No. EP-354/2009/A and VEP (EP-354/2009/B). ENVIRON 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 2018. 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 fourth Monthly 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 in February 2014.

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
SOR (AECOM Asia Company Limited)	Chief Resident Engineer	Edwin Ching Andrew Westmoreland	2450 3111 2450 3511	2450 3099 2450 3099
ENPO / IEC (ENVIRON Hong Kong Ltd.)	ENPO Leader	Y.H. Hui	3465 2888	3465 2899
ENPO / IEC (ENVIRON Hong Kong Ltd.)	IEC	Tony Cheng	3465 2888	3465 2899
Contractor (Dragages – Bouygues Joint Venture)	Environmental Manager	C.F. Kwong	2293 7322	2670 2798
Contractor (Dragages – Bouygues Joint Venture)	Environmental Officer 24hour complaint hotline	Bryan Lee Rachel Lam	2293 7323 2293 7342	2670 2798
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 three-month rolling construction programme is shown in Appendix B.

As per DBJV’s information, details of major construction works carried out in this reporting period are as follows:

Marine-based Works

· Dredging;

· Vertical Seawall construction;

· Sloping Seawall construction;

· Temporary pontoon installation at RTT; and

· Marine Sheet Piling for Box Culvert extension.

Land-based Works

· WA 18 Site office construction;

· CLP Substation structure works; and

· CLP Substation E&M works.

The general layout plan of the site showing the detailed works areas is shown in Figure 1.2.

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

Figure 1.2 Locations of Construction Activities – February 2014

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

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.

High volume samplers (HVSs) were used to carry out the 1-hour and 24-hour TSP monitoring on 5, 8, 12, 18, 24 and 28 February 2014 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. Copies of the calibration certificates for the equipment are presented in Appendix E.

Table 2.1 Locations of Impact Air Quality Monitoring Stations

Monitoring Station	Monitoring Dates	Location	Description	Parameters & Frequency
ASR1	5, 8, 12, 18, 24 and 28 February 2014	Tuen Mun Fireboat Station	Office	Ÿ 1-hour Total Suspended Particulates (1-hour TSP, µg/m³), 3 times per day every 6 days Ÿ 24-hour Total Suspended Particulates (24-hour TSP, µg/m³), daily for 24-hour every 6 days
ASR5		Pillar Point Fire Station	Office
AQMS1		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 Anemometer	MetPak, WindSonic

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 Anemometer

MetPak, WindSonic

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 K.

2.1.3 Monitoring Schedule for the Reporting Month

The schedule for air quality monitoring in February 2014 is provided in Appendix F.

2.1.4 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 and graphical presentations are presented in Appendix G.

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

Station	Average (µg/m³)	Range (µg/m³)	Action Level (µg/m³)	Limit Level (µg/m³)
ASR 1	151	56 - 305	331	500
ASR 5	168	60 - 308	340	500
AQMS1	149	63 - 339	335	500
ASR6	153	56 - 361	338	500
ASR10	110	46 - 228	337	500

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

Station	Average (µg/m³)	Range (µg/m³)	Action Level (µg/m³)	Limit Level (µg/m³)
ASR 1	62	32 - 97	213	260
ASR 5	79	39 - 135	238	260
AQMS1	62	40 - 97	213	260
ASR6	56	38 - 85	238	260
ASR10	49	34 - 70	214	260

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

A total of six monitoring events were undertaken in which two Action Level exceedances of 1-hr TSP and no exceedance of 24-hr TSP were recorded in this reporting month.

Meteorological information collected at the ASR5, including wind speed and wind direction, is provided in Appendix H. Meteorological information recorded by the wind anemometer between 4 and 14 February 2014 is not available due to power failure.

2.2 Water Quality Monitoring

2.2.1 Monitoring Requirements & Equipment

In accordance with the Updated EM&A Manual, impact water quality monitoring was carried out three days per week during the construction period at nine (9) water quality monitoring stations (Figure 2.2; Table 2.5).

Table 2.5 Locations of Water Quality Monitoring Stations and the Corresponding Monitoring Requirements

Station ID	Type	Coordinates		*Parameters, unit	Depth	Frequency
		Easting	Northing
IS12	Impact Station	813218	823681	Ÿ Temperature(°C) Ÿ pH(pH unit) Ÿ Turbidity (NTU) Ÿ Water depth (m) Ÿ Salinity (ppt) Ÿ DO (mg/L and % of saturation) · SS (mg/L)	3 water depths: 1m below sea surface, mid-depth and 1m above sea bed. If the water depth is less than 3m, mid-depth sampling only. If water depth less than 6m, mid-depth may be omitted.	Impact monitoring: 3 days per week, at mid-flood and mid-ebb tides during the construction period of the Contract.
IS13	Impact Station	813667	824325
IS14	Impact Station	812592	824172
IS15	Impact Station	813356	825008
CS4	Control / Far Field Station	810025	824004
CS6	Control / Far Field Station	817028	823992
SR8	Sensitive receiver (Gazettal beaches in Tuen Mun)	816306	825715
SR9	Sensitive receiver (Butterfly Beach)	813601	825858
SR10A	Sensitive receiver (Ma Wan FCZ)	823741	823495
*Notes: In addition to the parameters presented monitoring location/position, time, water depth, sampling depth, tidal stages, weather conditions and any special phenomena or works underway nearby were also recorded.

Table 2.6 summarises the equipment used in the impact water quality monitoring programme. Copies of the calibration certificates are attached in Appendix E.

Table 2.6 Water Quality Monitoring Equipment

Equipment	Model	Qty.
Water Sampler	Kahlsico Water-Bottle Model 135DW 150	4
Multi-parameter Water Quality System	YSI 6820-C-M/YSI 6920	6
Dissolved Oxygen Meter	YSI Pro 2030	1
pH Meter	HANNA HI 8314	1
Turbidity Meter	HACH 2100Q	1
Monitoring Position Equipment	“Magellan” Handheld GPS Model eXplorist GC	4
Monitoring Position Equipment	DGPS Koden KGP913MK2 ⁽¹⁾	1

2.2.2 Action & Limit Levels

The Action and Limit levels of water quality impact monitoring are shown in Appendix D. The Event and Action plan is presented in Appendix K.

2.2.3 Monitoring Schedule for the Reporting Month

The schedule for water quality monitoring in February 2014 is provided in Appendix F.

2.2.4 Results and Observations

During this reporting period, marine dredging activities were undertaken at Portions N-A and N-B. A closed grab dredger was used and silt curtains (cage-type and single floating type) were deployed during dredging works. The level of dredging activities was within the working rate described in the EP and the approved EIA Report. It is useful to note that heavy marine traffic (not associated with the Project) was commonly observed nearby the Project site and its vicinity.

Impact water quality monitoring was conducted at all designated monitoring stations in the reporting month. Detailed impact water quality monitoring results are presented in Appendix I.

A total of twelve monitoring events were undertaken in which no exceedances was recorded.

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 2.7 summarises the equipment used for the impact dolphin monitoring.

Table 2.7 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 2.3. The co-ordinates of all transect lines are shown in Table 2.8 below.

Table 2.8 Impact Dolphin Monitoring Line Transect Co-ordinates

Line No.		Easting	Northing	Line No.		Easting	Northing
1	Start Point	804671	814577	13	Start Point	816506	819480
1	End Point	804671	831404	13	End Point	816506	824859
2	Start Point	805475	815457	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	820690	19	Start Point	822513	823268
7	End Point	810499	824613	19	End Point	822513	824321
8	Start Point	811508	820847	20	Start Point	823477	823402
8	End Point	811508	824254	20	End Point	823477	824613
9	Start Point	812516	820892	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	818449	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

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 K.

2.3.6 Monitoring Schedule for the Reporting Month

Dolphin monitoring was carried out on 6, 12, 14 and 20 February 2014. The dolphin monitoring schedule for the reporting month is shown in Appendix F.

2.3.7 Results & Observations

A total of 297.84 km of survey effort was collected, with 97.9% of the total survey effort being conducted under favourable weather conditions (ie Beaufort Sea State 3 or below with good visibility) in February 2014. Amongst the two areas, 116.12 km and 181.72 km of survey effort were collected from NEL and NWL survey areas, respectively. The total survey effort conducted on primary and secondary lines were 211.78 km and 86.06 km, respectively. The survey efforts are summarized in Appendix J.

Despite the lone sighting made just adjacent to the River Trade Terminal on 6 February2014, none of the 11 sightings was made in the proximity of this Project. The distribution of dolphin sightings during the reporting month is shown in Figure 2.4.

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 February 2014 with the results present in Tables 2.9 and 2.10.

Table 2.9 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: Feb 6^th/12^th	0.0	0.0
NEL	Set 2: Feb 14^th/20^th	0.0	0.0
NWL	Set 1: Feb 6^th/12^th	7.4	17.9
NWL	Set 2: Feb 14^th/20^rd	6.2	29.5

Note: Dolphin Encounter Rates are deduced from the Two Sets of Surveys (Two Surveys in Each Set) in February 2014 in Northeast (NEL) and Northwest Lantau (NWL)

Table 2.10 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	6.8	5.1	23.5	17.7

Note: Overall dolphin encounter rates (sightings per 100km of survey effort) from all four surveys are conducted in February 2014 on primary lines only as well as both primary lines and secondary lines in Northeast and Northwest Lantau.

Table d 4.6

The average group size of Chinese White Dolphins in February 2014 was 3.27 individuals per group. Most dolphin groups were composed of only 1 - 4 animals with only two larger groups of seven animals being sighted.

Due to monthly variation in dolphin occurrence within the survey area, it would be more appropriate to draw conclusion on whether any unacceptable impacts on dolphins have been detected related to the construction activities of this Project 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.

2.3.8 Marine Mammal Exclusion Zone Monitoring

Daily 250 m marine mammal exclusion zone monitoring was undertaken during the period of dredging activities under this Contract. One sighting of the Indo-Pacific humpback dolphin Sousa chinensis was recorded on 20 February 2014 during the exclusion zone monitoring. The dolphin group of three was sighted within the 250 m marine mammal exclusion zone from a dredging barge sighting platform by the marine mammal observer. The marine dredging work was subsequently suspended until the observer has confirmed that the area is continuously clear of dolphin for a period of 30 minutes. The Dolphin Intrusion Report is presented in Appendix J [JY1] .

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. In the reporting month, four (4) site inspections were carried out on 5, 11, 19 and 26 February 2014.

Key observations during the site inspections are described below:

Air Quality

· Stockpile not in use should be fully covered. (Portion N6)

Noise

· No adverse observation was identified in the reporting month.

Water Quality

· Excess sandy materials should be cleaned from the decks and exposed fittings of the barge. (Crown Asia 11)

Marine Ecology

Daily 250 m marine mammal exclusion zone monitoring was implemented during the period of dredging activities under this Contract. One sighting of the Indo-Pacific humpback dolphin Sousa chinensis was recorded on 20 February 2014 during the exclusion zone monitoring. The dolphin group of three was sighted within the 250m marine mammal exclusion zone from a dredging barge sighting platform by the marine mammal observer. The marine dredging work was subsequently suspended until the observer has confirmed that the area is continuously clear of dolphin for a period of 30 minutes.

Chemical and Waste Management

· Drip tray should be provided to the oil drum to avoid chemical spillage. (Barge - Tai Hip 2)

· Chemical labels should be provided to the oil drum and the drip tray for the winch should be maintained regularly to avoid oil spillage. (Barge - Tai Hip 2)

· Drip tray for the oil gun should be regularly maintained and the oil gun should be properly stored while not in use. (Dredging Barge - Crown Asia 1)

· Chemical containers should be properly stored in the drip tray. (Dredging Barge - Crown Asia 1)

· Sheet piling driving machine should be maintained regularly and the oil stain should be cleared as chemical waste. (Barge - Sun Leung Kee 13)

Landscape and Visual Impact

· No adverse observation was identified in the reporting month.

Miscellaneous

· No adverse observation was identified in the reporting month.

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

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.

As advised by the Contractor, no inert C&D Materials are disposed of as public fill; 20 kg of chemical waste was recycled in the reporting period. 18,500 m³ of Category L marine sediment and 24,500 m³ of Category M marine sediment are generated and disposed of at designated sites. Monthly summary of waste flow table is detailed in Appendix M.

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 reminded to properly maintain the site tidiness and dispose of the wastes accumulated on site regularly and properly.

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.

2.6 Environmental Licenses and Permits

The status of environmental licensing and permit is summarized in Table 2.11 below.

Table 2.11 Summary of Environmental Licensing and Permit Status

Statutory Reference	License/ Permit	License or Permit No.	Date of Issue	Date of Expiry	License/ Permit Holder	Remarks
EIAO	Environmental Permit	EP-354/2009/B	28 January 2014	Throughout the Contract	HyD	Application for VEP on 20 January 2014 to replace EP-354/2009/A
NCO	Construction Dust Notification	363510	19 Aug 2013	Throughout the Contract	DBJV	-
WDO	Chemical Waste Registration	5213-422-D2516-01	10 Sep 2013	Throughout the Contract	DBJV	-
WDO	Construction Waste Disposal Account	7018108	19 Aug 2013	Throughout the Contract	DBJV	Waste disposal in Contract HY/2012/08
WPCO	Waste Water Discharge License	WT00017707-2013	18 Nov 2013	30 Nov 2018	DBJV	Discharge of Construction Runoff
NCO	Construction Noise Permit	GW-RW0035-13	27 Jan 2014	26 Jul 2014	DBJV	For Dredging and Reclamation Works, superseded by GW-RW0095-14 on 10 Feb 2014
NCO	Construction Noise Permit	GW-RW0095-14	10 Feb 2014	9 Aug 2014	DBJV	For Dredging and Reclamation Works
NCO	Construction Noise Permit	GW-RW0822-13	14 Nov 2013	10 May 2014	DBJV	For works in site WA18
NCO	Construction Noise Permit	GW-RS0814-13	15 Nov 2013	10 May 2014	DBJV	For works in site WA23
NCO	Construction Noise Permit	GW-RW0029-14	27 Jan 2014	26 Jul 2014	DBJV	For Portion N6, superseded by GW-RW0077-14 on 17 Feb 2014
NCO	Construction Noise Permit	GW-RW0077-14	17 Feb 2014	16 Aug 2014	DBJV	For Portion N6
DASO	Marine Dumping Permit	EP/MD/14-072	1 Nov 2013	30 Apr 2014	DBJV	For Type 1
DASO	Marine Dumping Permit	EP/MD/14-124	1 Feb 2014	28 Feb 2014	DBJV	For Type 1 (Dedicated site) and Type 2

2.7 Implementation Status of Environmental Mitigation Measures

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 relevant to this Contract were implemented properly.

2.8 Summary of Exceedances of the Environmental Quality Performance Limit

No exceedances were recorded for water quality monitoring during the reporting month. Two Action level exceedances of 1-hr TSP and no exceedances of 24-hr TSP for air quality were recorded during the reporting month. Further to the investigation, the recorded exceedances for air quality monitoring were considered to be sporadic event from the cumulative anthropogenic activities (eg traffic emissions from Lung Mun Road and River Trade Terminal) in this area of Hong Kong, thus the Project works were unlikely to be the major cause of the recorded exceedances. The investigation findings are detailed in Appendix L.

One Action Level exceedance was recorded for the quarterly dolphin monitoring data between December 2013 and February 2014. The observed exceedance will be further investigated in the First Quarterly EM&A Report for November 2013 to February 2014.

Cumulative statistics are provided in Appendix L.

2.9 Summary of Complaints, Notification of Summons and Successful Prosecutions

The Environmental Complaint Handling Procedure is provided in Figure 2.5.

No complaints, notification of summons and prosecution were received in the reporting period.

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

3 Future Key Issues

3.1 Construction Programme for the Coming Months

As informed by the Contractor, the major works for the Project in March 2014 will be:

Marine-based Works

· Dredging;

· Reclamation;

· Vertical Seawall construction;

· Sloping Seawall construction;

· Marine Sheet Piling for Box Culvert extension; and,

· Predrilling for Box culvert Foundation.

Land-based Works

· AECOM site office construction;

· CLP Substation Footing & underground utilities works; and

· CLP Substation Superstructure.

3.2 Key Issues for the Coming Month

Potential environmental impacts arising from the above upcoming construction activities in the next reporting month of March 2014 are mainly associated with dust, marine water quality, marine ecology and waste management issues.

3.3 Monitoring Schedule for the Coming Month

The tentative schedule for environmental monitoring in March 2014 is provided in Appendix F.

4 Conclusions and recommendations

4.1 Conclusions

This Fourth Monthly EM&A Report presents the findings of the EM&A activities undertaken during the period from 1 to 28 February 2014, in accordance with the Updated EM&A Manual and the requirements of EP-354/2009/B.

Air quality (including 1-hour TSP and 24-hour TSP), water quality and dolphin monitoring were carried out in this reporting month. Two (2) Action Level exceedances of 1-hr TSP and no exceedances of 24-hr TSP for air quality monitoring were recorded in the reporting month. No exceedances for water quality monitoring was recorded in the reporting month. Investigation findings suggested that the Project works were not the major cause of the recorded exceedances for air quality monitoring. Nevertheless, the Contractor was reminded to ensure all dust mitigation measures are implemented at the construction site and the proper deployment of silt curtains during the period of marine works under this Contract.

A total of 11 groups of 36 Chinese White Dolphin sightings were recorded during the two sets of surveys in February 2014. All except one sighting were made in NWL during the two sets of surveys in February, with another group of four animals being sighted in NEL. All sightings were made on primary lines during on-effort search, and only one of the dolphin groups was associated with an operating fishing vessel. Whilst one Action Level exceedance was observed for the quarterly dolphin monitoring data between December 2013 and February 2014, 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 during the dolphin monitoring in this reporting month.

Environmental site inspection was carried out four (4) times in February 2014. Recommendations on remedial actions were given to the Contractor for the deficiencies identified during the site audits.

4.2 Recommendations

According to the environmental site inspections performed in the reporting month, the following recommendations were provided:

Air Quality

Temporary stockpiles at the works area should be properly covered by tarpaulin when piling is completed.

Regular water spraying should be applied to ground breaking works and dust generating area.

Water Quality

Measures should be undertaken by the Contractor to avoid residual sandy materials leaving from at the edge of loading area which may lead to surface runoff in the vicinity.

The Contractor should avoid sandy materials from entering the drainage area.

The Contractor should ensure that the dredging is undertaken properly to avoid spillage outside the cage-type silt curtain in the dredging site of barge Crown Asia 1 and GD2.

Chemical and Waste Management

The Contractor should install drip tray stopper and clear water stagnant in the drip tray.

The Contractor should proper label the oil drums.

The Contractor should clear oil stain on the barge.

Drip tray should be provided by the Contractor for the chemical containers