Executive Summary

Introduction

A1. The Project, Design, Build and Operate First Stage of Tseung Kwan O Desalination Plant (TKODP), is a Designated Project under the Environmental Impact Assessment Ordinance (Cap. 499) (EIAO) and is currently governed by a Further Environmental Permit (EP No. FEP - 01/503/2015/A) for the construction and operation of the Contract.

A2. In accordance with the Environmental Monitoring and Audit (EM&A) Manual for the Contract, EM&A works for marine water quality, noise, waste management and ecology should be carried out by Environmental Team (ET), Acuity Sustainability Consulting Limited (ASCL), during the construction phase of the Contract.

A3. This is the 2nd Annual EM&A Review Report, prepared by ASCL, for the Contract summarizing the monitoring results and audit findings of the EM&A programme at and around Tseung Kwan O Area 137 (TKO 137) during the reporting period from 1 April 2021 to 30 April 2022.

A4. The EM&A programme for this contract has covered environmental monitoring on water quality, construction noise level at selected noise sensitive receivers, and Contractor’s environmental performance auditing in the aspects of construction dust, construction noise, water quality, waste management, landscape and visual and ecology.

Summary of environmental monitoring and audit works

A5. A summary of the environmental monitoring and audit works undertaken in the reporting period are summarized in Table I.

A6. No construction noise monitoring was conducted during the reporting period since there are no Contract -related construction activities undertaken within a radius of 300m from the monitoring locations. No Action Level exceedance was recorded during the reporting period.

A7. Water Quality Monitoring was conducted as schedule in the reporting period. Five hundred and thirty-seven (537) action level exceedances and three hundred and sixty-nine (369) limit level exceedances of Suspended Solid were recorded in the reporting period. Summary of exceedances could be referring to Appendix G.

A8. All Action and Limit Level exceedance was concluded to be unrelated to the Project. Details of the exceedance could be referring to Appendix O of the corresponding Monthly EM&A Report.

A9. Two hundred and fifty-two (252) times of landfill gas monitoring were conducted in the reporting period. No action and limit level exceedance was recorded in the reporting period.

Table 1.1 Contact Details of Key Personnel

Party

Position

Name

Telephone no.

Project Proponent (WSD)

SE/CM2

Benny Lam

2634-3573

Supervising Officer (Binnies Hong Kong Limited)

Project Manager

Christina Ko

2608-7302

Chief Resident Engineer

Roger Wu

6343-1002

The Jardine Engineering Corporation, Limited, China State Construction Engineering (Hong Kong) Limited and Acciona Agua,

S.A. Trading

Project Manager

Stephen Yeung

2807-4665

Environmental Monitoring Manager

Brian Kam

9456-9541

Acuity Sustainability Consulting Limited

Environmental Team Leader (ETL)

Jacky Leung

2698-6833

ANewR Consulting Limited

Independent Environmental Checker (IEC)

Louis Kwan

2618-2831

1.4. Summary of Construction Works

The construction programme is presented in Appendix A. Detail of the major construction activities undertaken could be referred to Section 1.4 in each monthly EM&A Report.

The status for all environmental aspects is presented in Table 1.2.

Table 1.2 Summary of Status for Key Environmental Aspects under the EM&A Manual

Parameters	Status
Water Quality
Baseline Monitoring under EM&A Manual	The baseline water quality monitoring was conducted between 12 May 2020 to 6 Jun 2020
Impact Monitoring	On-going
Noise
Baseline Monitoring	The baseline noise monitoring result has been reported in Baseline Monitoring Report and submitted to EPD under EP Condition 3.4.
Impact Monitoring	On-going
Waste Management
Mitigation Measures in Waste Management Plan	On-going
Environmental Audit
Site Inspection covering Measures of Air Quality, Noise Impact, Water Quality, Waste, Ecological Quality, Fisheries, Landscape and Visual	On-going

Other than the EM&A work by ET, environmental briefings, trainings and regular environmental management meetings were conducted, in order to enhance environmental awareness and closely monitor the environmental performance of the contractors.

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

2. Noise

2.1. Monitoring Requirements

To ensure no adverse noise impact, noise monitoring is recommended to be carried out within 300m radius from the nearby noise sensitive receivers (NSRs), during construction phase. The NSRs selected as monitoring station are (i) NSR4 - Creative Secondary School, (ii) NSR24 - PLK Laws Foundation College, and (iii) NSR31 - School of Continuing and Professional Studies - CUHK respectively.

2.2. Monitoring Locations

The monitoring locations were normally made at a point 1m from the exterior of the NSRs building façade and be at a position 1.2m above the ground. A correction of +3dB(A) was made to the free-field measurements.

According to the environmental findings detailed in the EIA report and Baseline Monitoring Report, the designated locations for the construction noise monitoring are listed in Table

2.1 below.

Table 2.1 Noise Sensitive Receivers

NSR ID	Noise Sensitive Receivers	Monitoring Location	Position
NSR 4	Creative Secondary School	Roof Floor	1 m from facade
NSR 24	PLK Laws Foundation College	Pedestrian Road on Ground Floor	Free field
NSR 31	School of Continuing and Professional Studies - CUHK	Roof Floor	1 m from facade

Three noise monitoring locations for impact monitoring at the nearby sensitive receivers are shown in Figure 2.1-2.3.

Figure 2.3 NSR31 School of Continuing and Professional Studies - CUHK

2.3. Monitoring Parameter, frequency and duration

Construction noise level were measured in terms of the A-weighted equivalent continuous sound pressure level (LAeq). Leq 30min was used as the monitoring parameter for the time period between 0700 and 1900 on normal weekdays. Table 2.2 summarizes the monitoring parameters, frequency, and duration of the impact noise monitoring.

Table 2.2 Noise Monitoring Parameters, Time, Frequency and Duration

Time

Duration

Interval

Parameters

Daytime: 0700-1900

Day time: 0700-1900 (during normal

weekdays)

Continuously in Leq 5min/Leq 30min (Average of 6 consecutive Leq 5min)

Leq 30min L10 30min & L90 30min

2.4. Impact Monitoring Methodology

The monitoring methodology and QA/QC procedure could be referring to Section 2.3 of the Monthly EM&A Report.

2.5. Action and Limit Levels

The Action/Limit Levels are in line with the criteria of Practice Note for Professional Persons (ProPECC PN 2/93) “Noise from Construction Activities - Non-statutory Controls” and Technical Memorandum on Environmental Impact Assessment Process issued by HKSAR Environmental Protection Department [“EPD”] under the Environmental Impact Assessment Ordinance, Cap 499, S.16 are presented in Table 2.3.

Table 2.3 Action and Limit Levels for Noise per EM&A Manual

Time Period

Action

Limit (dB(A))

0700-1900 on normal weekdays

When one documented complaint is received from any one of the noise sensitive receivers

- 70 dB(A) for school and

- 65 dB(A) during examination period

Notes: Limits specified in the GW-TM and IND-TM for construction and operation noise, respectively.

If exceedances were found during noise monitoring, the actions in accordance with the Event and Action Plan shall be carried out according to Appendix E.

2.6. Monitoring Results and Observations

Referring to EM&A manual Section 4.1.2, the impact noise monitoring should be carried out when there are Contract-related construction activities undertaken within a radius of 300m from the monitoring stations. No monitoring station was located within a radius of 300m of the Contract site as shown in Figure 2.4, no impact monitoring for noise impact was conducted in the reporting period.

Figure 2.4 Site Layout Plan with Noise Sensitive Receivers and Desalination Plant

3. Water Quality

In accordance with the recommendations of the EIA, water quality EM&A is required during dredging for the submarine pipelines and, during operation phase. In addition, baseline water quality monitoring was prior to the commencement of marine construction activities.

The following Section provides details of the water quality monitoring to be undertaken by the Environmental Team (ET) to verify the distance of sediment and brine plume dispersion and to identify whether the potential exists for any indirect impacts to occur to ecological sensitive receivers.

Water quality monitoring for the Contract can be divided into the following stages:

- Dredging activities during construction phase;

- Discharge of effluent from main disinfection during construction phase;

- Operation phase - first year upon commissioning; and,

- Continuous monitoring of effluent quality.

In addition, the marine works contractor is required to complete a silt curtain efficiency test for the combined use of floating silt curtain type and cage type silt curtain for dredging at seawater intake to confirm the silt curtain reduction efficiency assumptions of the assessment. The details of testing plan together with the silt curtain deployment plan shall be submitted by the ET to seek approval from the IEC and EPD.

3.1. Water Quality Parameters

The parameters that have been selected for measurement in situ and in the laboratory are those that were either determined in the EIA to be those with the most potential to be affected by the construction works or are a standard check on water quality conditions. Parameters to be measured in the impact water quality monitoring are listed in Table 3.1.

Table 3.1 Parameters measured in the impact marine water quality monitoring

Parameters	Unit	Abbreviation
In-situ measurements
Dissolved oxygen	mg/L	DO
Temperature	oC	-
pH	-	-
Turbidity	NTU	-
Salinity	0/00	-
Total Residual Chlorine NOTE1	mg/L	TRC

Parameters	Unit	Abbreviation
Laboratory measurements
Suspended Solids	mg/L	SS
Iron-Soluble	mg/L	Fe
Anti-scalant as Reactive Phosphorus	mg/L	PO4 as P-

NOTE 1: Monitoring of TRC will be conducted when cleaning and sterilization of the new freshwater main is carried out.

In addition to the water quality parameters, other relevant data was measured and recorded in Water Quality Monitoring Logs, including the location of the sampling stations, water depth, time, weather conditions, sea conditions, tidal stage, current direction and velocity, special phenomena and work activities undertaken around the monitoring and works area that may influence the monitoring results.

3.2. Monitoring Equipment

The monitoring methodology, monitoring equipment and QA/QC procedure could be referring to Section 3.1.2 - 3.1.4 of the Monthly EM&A Report.

3.3. Monitoring Location

The impact water quality monitoring locations are in accordance with the EM&A Manual and detailed in Table 3.3 below.

Table 3.3 Location of Impact Water Quality Monitoring Station

Station	Easting	Northing	Description
CE	843550	815243	Upstream control station at ebb tide
CF	846843	810193	Upstream control station at flood tide
WSR1	846864	812014	Ecological sensitive receiver at Tung Lung Chau
WSR2	847645	812993	Fisheries sensitive receiver at Tung Lung Chau
WSR3	848023	813262	Ecological sensitive receiver at Tung Lung Chau
WSR4	847886	814154	Ecological sensitive receiver at Tai Miu Wan
WSR16	845039	815287	Ecological sensitive receiver at Fat Tong Chau
WSR33	847159	814488	Ecological sensitive receiver at Tai Miu Wan
WSR36	846878	814081	Ecological sensitive receiver at Kwun Tsai

3.4. Action and Limit levels

The Action and Limit Levels have been set based on the derivation criteria specified in the EM&A Manual. Based on the baseline water quality monitoring data and the derivation criteria, the Action/Limit Levels have been derived and are presented in Table 3.4.

Table 3.4 Derived Action and Limit Levels for Water Quality

Parameters	Action	Limit
Construction Phase Impact Monitoring
DO in mg/L	Surface and Middle 7.30 mg L-1 Bottom 7.31 mg L-1 Tung Lung Chau Fish Culture Zone 5.1 mgL-1 or level at control station (whichever the lower)	Surface and Middle 4 mg L-1 Bottom 2 mg L-1 Tung Lung Chau Fish Culture Zone 5.0 mgL-1 or level at control station (whichever the lower)
SS in mg/L (Depth- averaged)	5.00 mg L-1 or 20% exceedance of value at any impact station compared with corresponding data from control station	6.00 mg L-1 or 30% exceedance of value at any impact station compared with corresponding data from control station
Turbidity in NTU (Depth-averaged)	2.41 NTU or 20% exceedance of value at any impact station compared with corresponding data from control station	2.84 NTU or 30% exceedance of value at any impact station compared with corresponding data from control station
First-year Operation Phase Monitoring iv
DO in mg/L	Surface and Middle 7.30 mg L-1 Bottom 7.31 mg L-1 Tung Lung Chau Fish Culture Zone 5.1 mgL-1 or level at control station (whichever the lower)	Surface and Middle 4 mg L-1 Bottom 2 mg L-1 Tung Lung Chau Fish Culture Zone 5.0 mgL-1 or level at control station (whichever the lower)

SS in mg/L (Depth- averaged)	5.00 mg L-1 or 20% exceedance of valueat any impact station compared with corresponding data from control station	6.00 mg L-1 or 30% exceedance of value at any impact station compared with corresponding data from control station
Turbidity in NTU (Depth-averaged)	2.41 NTU or 20% exceedance of value at any impact station compared with corresponding data from control station	2.84 NTU or 30% exceedance of value at any impact station compared with corresponding data from control station
Salinity in PSU (Depth-averaged)	34.28 PSU or 9% exceedance of value at any impact station compared with corresponding data from control station	34.60 PSU or 10% exceedance of value at any impact station compared with corresponding data from control station
Iron in mg/L (Depth-averaged)	0.3 mgL-1	0.3 mgL-1

Notes:

i. "Depth-averaged" is calculated by taking the arithmetic means of reading of all three depths.

ii. For DO, non-compliance of the water quality limits occurs when monitoring result is lower than the limits.

iii. For Turbidity, SS, iron and Salinity, non-compliance of the water quality limits occurs when monitoring result is higher than the limits.

iv. For the Action and Limit Levels adopted during First-year Operation Phase Monitoring, further review would be made according to the EM&A Manual during Operation Phase.

3.5. Monitoring Programme

The ET of the Contract had conducted the impact water quality monitoring between 1 April 2021 to 30 April 2022 at the ten designated monitoring stations and the six designated monitoring at waters near TKO in accordance with the EM&A Manual and Contract Specification respectively.

3.6. Monitoring results and observations

The impact water quality monitoring at the designated locations were conducted by the ET as scheduled in the reporting period. The graphical presentation of the water quality monitoring result was shown in Appendix D.

Five hundred and thirty-seven (537) of the general water quality monitoring results of SS obtained had exceeded the Action level. Three hundred and sixty-nine (369) of the general water quality monitoring results of SS obtained during the reporting period had exceeded the Limit Level.

Details of the exceedance could be referring to Appendix O of the Monthly EM&A Report.

Action and Limit Level are provided in Table 5.1.

Table 5.1 Action / Limit Levels and Event and Action Plan for LFG Hazard

Parameters	Level	Action
Oxygen (O2)	Action Level < 19% O2	Ventilate trench/void to restore
	Limit Level < 19% O2	O2 to > 19% Stop works
		Evacuate personnel/prohibit entry
		Increase ventilation to restore O2 to >
		19%
Methane (CH4)	Action Level >10% LEL	Post "No Smoking" signs
		Prohibit hot works
		Increase ventilation to restore CH4 to
		<10% LEL
	Limit Level >20% LEL	Stop works
		Evacuate personnel/prohibit entry
		Increase ventilation to restore
		CH4 to<10% LEL
Carbon Dioxide (CO2)	Action Level >0.5% CO2	Ventilate to restore CO2 to < 0.5%
	Limit Level >1.5% CO2	Stop works
		Evacuate personnel / prohibit entry
		Increase ventilation to restore CO2 to
		<0.5%

8. Conclusions and Recommendations

This is the 2nd Annual EM&A Review Report for the Project which summarizes the key findings of the EM&A programme during the reporting period from 1 April 2021 to 30 April 2022, in accordance with the EM&A Manual and the requirement under FEP- 01/503/2015/A.

No noise monitoring was conducted in the reporting period due to the over distant monitoring station from the works location, in which construction activities were not undertaken within a radius of 300m from the monitoring locations.

The EM&A works for water quality were conducted during the reporting period in accordance with the EM&A Manual.

Details of the exceedance could be referring to Appendix O of the corresponding Monthly EM&A Report.

Two hundred and fifty-two (252) times of landfill gas monitoring were conducted in the reporting period. No action and limit level exceedance was recorded in the reporting period.

Weekly environmental site inspection was conducted during the reporting period. Minor deficiency was observed during site inspection. The environmental performance of the project was therefore considered satisfactory.

According to the environmental site inspections performed in the reporting period, the Contractor is reminded to pay attention on maintaining proper materials storage, site tidiness and chemical storage on site.

No environmental complaint, notification of summons or prosecution was received in the 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.

Appendix A

Master Programme

Appendix B

Overview of Desalination Plant in Tseung Kwan O

Appendix C

Summary of Implementation Status of Environmental Mitigation

EIA Reference	Recommended Environmental Protection Measures/ Mitigation Measures	Objectives of the recommended measures & main concerns to address	Implementation Agent	Implementation Stage			Implementation status	Relevant Legislation & Guidelines
EIA Reference			Implementation Agent	D	C	O	Implementation status	Relevant Legislation & Guidelines
Air Quality
S4.8.1	Impervious dust screen or sheeting will be provided to enclose scaffolding from the ground floor level of building for construction of superstructure of the new buildings.	Land site/ During Construction	Contractor(s)		ü		Implemented	Air Pollution Control (Construction Dust)
S4.8.1	Impervious sheet will be provided for skip hoist for material transport.	Land site/ During Construction, particularly dry season	Contractor(s)		ü		NA	-
S4.8.1	The area where dusty work takes place should be sprayed with water or a dust suppression chemical immediately prior to, during and immediately after dusty activities as far as practicable.	Land site/ During Construction	Contractor(s)		ü		Implemented	-
S4.8.1	All dusty materials should be sprayed with water or a dust suppression chemical immediately prior to any loading, unloading or transfer operation.	Land site/ During Construction	Contractor(s)		ü		Implemented, reminder issued	-
S4.8.1	Dropping heights for excavated materials should be controlled to a practical height to minimize the fugitive dust arising from unloading.	Land site/ During Construction	Contractor(s)		ü		Implemented	-
S4.8.1	During transportation by truck, materials should not be loaded to a level higher than the side and tail boards and should be dampened or covered before transport.	Land site/ During Construction	Contractor(s)		ü		Implemented	-
S4.8.1	Wheel washing device should be provided at the exits of the work sites. Immediately before leaving a construction site, every vehicle shall be washed to remove any dusty material from its body and wheels as far as practicable.	Land site/ During Construction	Contractor(s)		ü		Implemented	-
S4.8.1	Road sections between vehicle-wash areas and vehicular entrance will be paved.	Land site/ During Construction	Contractor(s)		ü		Implemented	-
S4.8.1	Hoarding of not less than 2.4m high from ground level will be provided along the length of the Project Site boundary.	Land site/ During construction	Contractor(s)	ü	ü		N/A	-
S4.8.1	Haul roads will be kept clear of dusty materials and will be sprayed with water so as to maintain the entire road surface wet at all times.	Land site/ During construction	Contractor(s)		ü		Implemented, reminder issued	-

EIA Reference	Recommended Environmental Protection Measures/ Mitigation Measures	Objectives of the recommended measures & main concerns to address	Implementation Agent	Implementation Stage			Implementation status	Relevant Legislation & Guidelines
EIA Reference			Implementation Agent	D	C	O	Implementation status	Relevant Legislation & Guidelines
S4.8.1	Temporary stockpiles of dusty materials will be either covered entirely by impervious sheets or sprayed with water to maintain the entire surface wet all the time.	Land site/ During construction	Contractor(s)		ü		Implemented, rectified after reminder	-
S4.8.1	Stockpiles of more than 20 bags of cement, dry pulverised fuel ash and dusty construction materials will be covered entirely by impervious sheeting sheltered on top and 3- sides.	Land site/ During construction	Contractor(s)		ü		Implemented, rectified after observation and reminder	-
S4.8.1	All exposed areas will be kept wet always to minimize dust emission.	Land site/ During construction	Contractor(s)		ü		Implemented	-
S4.8.1	Ultra-low-sulphur diesel (ULSD) will be used for all construction plant on-site, as defined as diesel fuel containing not more than 0.005% sulphur by weight) as stipulated in Environment, Transport and Works Bureau Technical Circular (ETWB-TC(W)) No 19/2005 on Environmental Management on Construction Sites.	Land site/ During construction/ During Operation	Contractor(s)		ü	ü	Implemented	Environment, Transport and Works Bureau Technical Circular (ETWB- TC(W)) No 19/2005 on Environmental Management on Construction Sites
S4.8.1	The engine of the construction equipment during idling will be switched off.	Land site/ During construction	Contractor(s)		ü		Implemented	-
S4.8.1	Concrete batching plant will be required on site. control measures recommended in the Guidance Note on a Best Practicable Means for Cement Works (Concrete Batching Plant) (BPM 3/2 (93)) will be implemented. The control measures recommended in the Guidance Note on a Best Practicable Means for Cement Works (Concrete Batching Plant) (BPM 3/2 (93)) will be implemented.	Land site/ During construction	Contractor(s)		ü		N/A	-
S4.8.1	Regular maintenance of construction equipment deployed on-site will be conducted to prevent black smoke emission.	Land site/ During construction	Contractor(s)		ü		Implemented	-

EIA Reference	Recommended Environmental Protection Measures/ Mitigation Measures	Objectives of the recommended measures & main concerns to address	Implementation Agent	Implementation Stage			Implementation status	Relevant Legislation & Guidelines
EIA Reference			Implementation Agent	D	C	O	Implementation status	Relevant Legislation & Guidelines
Noise
S5.7	Only well-maintained plant will be operated on-site and plant will be serviced regularly during the construction phase.	All area/ During construction	Contractor(s)		ü		Implemented	A Practical Guide for the Reduction of Noise from
S5.7		All area/ During construction	Contractor(s)		ü		Implemented	Construction Works
S5.7	Silencers or mufflers on construction equipment will be utilised and will be properly maintained during the	Noise control/ During construction	Contractor(s)		ü		N/A	Construction Works
	construction phase.
S5.7	Mobile plant, if any, will be sited as far away from NSRs as possible.	Noise control/ During construction	Contractor(s)		ü		N/A
S5.7	Machines and plant (such as trucks) that may be in intermittent use will be shut down between work periods	Noise control/ During construction	Contractor(s)		ü		Implemented
	or will be throttled down to a minimum.
S5.7	Plants known to emit noise strongly in one direction will, wherever possible, be orientated so that the noise is	Noise control/ During construction	Contractor(s)		ü		N/A
	directed away from the nearby NSRs.
S5.7	Material stockpiles and other structures will be effectively utilised, wherever practicable, in screening noise from on-	Noise control/ During construction	Contractor(s)		ü		N/A
	site construction activities.
S5.7	Use of Quite Powered Mechanical Equipment (QPME).	Noise control/ During construction	Contractor(s)		ü		Implemented
S5.7	Movable noise barriers of 3m in height with skid footing should be used and located within a few metres of stationary plant and mobile plant such that the line of sight	Noise control/ During construction	Contractor(s)		ü		N/A
	to the NSR is blocked by the barriers. The length of the
	barrier should be at least five times greater than its height.
	The noise barrier material should have a superficial surface
	density of at least 7 kg m-2 and have no o or gappeningss.
S5.7	The noise insulating sheet should be deployed such that	Noise control/ During	Contractor(s)		ü		N/A
S5.7	there would be no opening or gaps on the joints.	construction	Contractor(s)				N/A
S5.7	Construction activities (e.g. excavation/shoring, reinstatement (asphalt), and pipe jacking) will be planned	Noise control/ During construction	Contractor(s)	ü	ü		Implemented
	and carried out in sequence, such that items of PME
	proposed for these activities will not be operated
	simultaneously.

EIA Reference	Recommended Environmental Protection Measures/ Mitigation Measures	Objectives of the recommended measures & main concerns to address	Implementation Agent	Implementation Stage			Implementation status	Relevant Legislation & Guidelines
EIA Reference			Implementation Agent	D	C	O	Implementation status
S5.7	PMEs will not be used at the works areas near educational institutions with residual impact (ie the “influence area” within a radius of 40m) during school hours in order to reduce impact to the educational institutions.	Noise control / During construction	Contractor(s)		ü		N/A
S5.7	Noise enclosures or acoustic sheds would be used to cover stationary PME such as generators. Portable/Movable noise enclosure made of material with superficial surface density of at least 7 kg m-2 may be used for screening the noise from operation of the saw/groover, concrete.	Noise control/ Pre- construction/ During construction	Contractor(s)	ü	ü		N/A	-
S5.9	Sawcutting pavement, breaking up of pavement, excavation /shoring, pipe laying, backfilling, reinstatement (concrete) and pipe jacking shall be scheduled outside the examination period.	Noise control/ Pre- construction/ During construction	Contractor(s)	ü	ü		N/A	--
S5.9	In view the duration of noise exceedance at Creative Secondary School, PLK Laws Foundation College, TKO Kei Tak Primary School and School of Continuing and Professional Studies-CUHK is limited to 8 weeks, the construction work in the influence areas near the four schools shall be scheduled during long school holidays (e.g., summer holiday, Easter holiday or Christmas holiday, etc.) as far as practicable. Scheduling the construction work for the four schools.	Noise control/ Pre- construction/ During construction	Contractor(s)	ü	ü		N/A	-
S5.10	A noise monitoring programme shall be implemented for the construction phase.	Designated monitoring stations as defined in EM&A Manual/During construction phase	ET		ü		N/A	-
S5.10	The effectiveness of on-site control measures could also be evaluated through the regular site audits.	All facilities/ During construction	Contractor(s)/ ET & IEC		ü		Implemented	-

Note: D - Design stage C - Construction O - Operation

EIA Reference	Recommended Environmental Protection Measures/ Mitigation Measures	Objectives of the recommended measures & main concerns to address	Implementation Agent	Implementation Stage			Implementation status	Relevant Legislation & Guidelines
EIA Reference			Implementation Agent	D	C	O	Implementation status	Relevant Legislation & Guidelines
Water Quality
S6.9	Dredged marine sediment will be disposed of in a gazetted marine disposal area in accordance with marine dumping permit conditions of the Dumping at Sea Ordinance (DASO).	Marine Dredging/ During construction	Contractor(s)		ü		Implemented	Dumping at Sea Ordinance (DASO)
S6.9	Disposal vessels will be fitted with tight bottom seals in order to prevent leakage of material during transport.	Marine Dredging/ During construction	Contractor(s)		ü		Implemented	-
S6.9	Barges will be filled to a level, which ensures that material does not spill over during transport to the disposal site and that adequate freeboard is maintained to ensure that the decks are not washed by wave action.	Marine Dredging/ During construction	Contractor(s)		ü		Implemented	-
S6.9	After dredging, any excess materials will be cleaned from decks and exposed fittings before the vessel is moved from the dredging area.	Marine Dredging/ During construction	Contractor(s)		ü		Implemented	-
S6.9	All vessels should be well maintained and inspected before use to limit any potential discharges to the marine environment.	Marine Dredging/ During construction	Contractor(s)		ü		Implemented	-
S6.9	All vessels must have a clean ballast system.	Marine Dredging/ During construction	Contractor(s)		ü		Implemented	-
S6.9	No discharge of sewage/grey wastewater should be allowed. Wastewater from potentially contaminated area on working vessels should be minimized and collected. These kinds of wastewater should be brought back to port and discharged at appropriate collection and treatment system.	Marine Dredging/ During construction	Contractor(s)		ü		Implemented, reminder issued	-
S6.9	No soil waste is allowed to be disposed overboard.	Marine Dredging/ During construction	Contractor(s)		ü		N/A	-

EIA Reference	Recommended Environmental Protection Measures/ Mitigation Measures	Objectives of the recommended measures & main concerns to address	Implementation Agent	Implementation Stage			Implementation status	Relevant Legislation & Guidelines
EIA Reference			Implementation Agent	D	C	O	Implementation status	Relevant Legislation & Guidelines
S6.9	Silt removal facilities such as silt traps or sedimentation facilities will be provided to remove silt particles from runoff to meet the requirements of the TM standard under the WPCO. The design of silt removal facilities will be based on the guidelines provided in ProPECC PN 1/94. All drainage facilities and erosion and sediment control structures will be inspected on a regular basis and maintained to confirm proper and efficient operation at all times and particularly during rainstorms. Deposited silt and grit will be removed regularly.	Land site & drainage/ During construction	Contractor(s)		ü		Implemented, rectified after observation and reminder	ProPECC PN 1/94 TM Standard under the WPCO
S6.9	Earthworks to form the final surfaces will be followed up with surface protection and drainage works to prevent erosion caused by rainstorms.	Land site & drainage/ During construction	Contractor(s)		ü		Implemented	-
S6.9	Appropriate surface drainage will be designed and provided where necessary.	Land site & drainage/ During construction	Contractor(s)		ü		Implemented	-
S6.9	The precautions to be taken at any time of year when rainstorms are likely together with the actions to be taken when a rainstorm is imminent or forecasted and actions to be taken during or after rainstorms are summarized in Appendix A2 of ProPECC PN 1/94.	Land site & drainage/ During construction	Contractor(s)	ü	ü		Implemented, reminder issued	ProPECC PN 1/94
S6.9	Oil interceptors will be provided in the drainage system where necessary and regularly emptied to prevent the release of oil and grease into the storm water drainage system after accidental spillages.	Land site & drainage/ During construction	Contractor(s)		ü		Implemented, rectified after reminder	-
S6.9	Temporary and permanent drainage pipes and culverts provided to facilitate runoff discharge, if any, will be adequately designed for the controlled release of storm flows.	Land site & drainage/ During construction	Contractor(s)		ü		Implemented	-
S6.9	The temporary diverted drainage, if any, will be reinstated to the original condition when the construction work has finished or when the temporary diversion is no longer required.	Land site & drainage/ During construction	Contractor(s)		ü		N/A	-

EIA Reference	Recommended Environmental Protection Measures/ Mitigation Measures	Objectives of the recommended measures & main concerns to address	Implementation Agent	Implementation Stage			Implementation status	Relevant Legislation & Guidelines
EIA Reference			Implementation Agent	D	C	O	Implementation status	Relevant Legislation & Guidelines
S6.9	Appropriate numbers of portable toilets shall be provided by a licensed contractor to serve the construction workers over the construction site to prevent direct disposal of sewage into the water environment.	Land site & drainage/ During construction	Contractor(s)		ü		Implemented	-
S6.9 and S6.12	The sterilization water should be dechlorinated with total residual chlorine (TRC) level below 1 mg/L before discharge to public sewer. In situ testing of TRC should also be conducted for the discharge of chlorinated water for pipeline disinfection to ensure sufficient dichlorination before discharge to public sewer.	Sterilization of water mains prior to commissioning	Contractor(s)		ü	ü	N/A	Technical Memorandum for Effluents Discharged into Drainage and Sewerage Systems
S6.9	The cleaning and flushing water should also be treated and desilted to the relevant discharge requirement stipulated in TM-DSS before discharging.	Sterilization of water mains prior to commissioning	Contractor(s)		ü	ü	N/A	Technical Memorandum for Effluents Discharged into Drainage and
S6.9	Site drainage should be well maintained, and good construction practices should be observed to ensure that oil, fuels, solvents and other chemicals are managed, stored and handled properly and do not enter the nearby water streams.	Land site & drainage/ During construction/ During operation	Contractor(s)		ü	ü	Implemented, rectified and observation issued	-
S6.12	Regular site inspections will be carried out in order to confirm that regulatory requirements are being met and that contractors are implementing the standard site practice and mitigation measures as proposed to reduce potential impacts to water quality.	During construction	Contractor(s)/ ET & IEC		ü		Implemented	-

Note: D - Design stage C - Construction O - Operation

EIA Reference	Recommended Environmental Protection Measures/ Mitigation Measures	Objectives of the recommended measures & main concerns to address	Implementation Agent	Implementation Stage			Implementation Status	Relevant Legislation & Guidelines
EIA Reference			Implementation Agent	D	C	O	Implementation Status	Relevant Legislation & Guidelines
Waste Management
S8.5	Nomination of approved personnel to be responsible for standard site practices, arrangements for collection and effective disposal to an appropriate facility of all wastes generated at the site.	Contract mobilization/ During construction	Contractor(s)		ü		Implemented	-
S8.5	Training of site personnel in proper waste management and chemical handling procedures. Training will be provided to workers on the concepts of site cleanliness and appropriate waste management procedures, including waste reduction, reuse and recycling at the beginning of the construction works.	Contract mobilization/ During construction	Contractor(s)		ü		Implemented	-
S8.5	Provision of sufficient waste disposal points and regular collection for disposal.	All area/ During construction/ During operation	Contractor(s)		ü	ü	Implemented, rectified after observation	DEVB TC(W) No. 8/2010, Enhanced Specification for Site Cleanliness and Tidiness.
S8.5	Appropriate measures to reduce windblown litter and dust transportation of waste by either covering trucks or by transporting wastes in enclosed containers.	All area/ During construction	Contractor(s)		ü		Implemented, reminder issued
S8.5	A waste management plan (WMP) as stated in the “ETWB TC(W) No. 19/2005, Environmental Management on Construction Sites” for the amount of waste generated, recycled and disposed of (including the disposal sites) will be established and implemented during the construction phase as part of the Environmental Management Plan (EMP). The Contractor will be required to prepare the EMP and submits it to the Architect/ Engineer under the Contract for approval prior to implementation.	All area/ During construction	Contractor(s)		ü		Implemented
S8.5	Separation of chemical wastes for special handling and appropriate treatment at the Chemical Waste Treatment Centre at Tsing Yi.	All area/ During construction	Contractor(s)		ü		Implemented, reminder issued	Chapters 2 & 3 Code of Practice on the Packaging, Labelling & Storage of Chemical Wastes published under the Waste Disposal Ordinance (Cap 354), Section 35

EIA Reference	Recommended Environmental Protection Measures/ Mitigation Measures	Objectives of the recommended measures & main concerns to address	Implementation Agent	Implementation Stage			Implementation Status	Relevant Legislation & Guidelines
EIA Reference			Implementation Agent	D	C	O	Implementation Status	Relevant Legislation & Guidelines
S8.5	Regular cleaning and maintenance programme for drainage systems, sumps and oil interceptors.	Land site/ During construction	Contractor(s)		ü		Implemented, reminder issued	Waste Disposal Ordinance (Cap 354)
S8.5	A recording system for the amount of wastes generated/ recycled and disposal sites. The trip- ticket system will be included as one of the contractual requirements and implemented by the contractor(s).	Land site/ During construction	Contractor(s)		ü		Implemented	DEVB TC(W) No. 6/2010, Trip Ticket System for Disposal of Construction & Demolition Materials
S8.5	Prior to disposal of construction waste, wood, steel and other metals will be separated to the extent practical, for re-use and/or recycling to reduce the quantity of waste to be disposed of to landfill.	All areas/ During construction	Contractor(s)		ü		Implemented
S8.5	Segregation and storage of different types of waste in different containers, skips or stockpiles to enhance reuse or recycling of material and their proper disposal.	Land site/ During construction/ During operation	Contractor(s)		ü		Implemented, reminder issued	WBTC 32/92, The Use of Tropical Hard Wood on Construction Site
S8.5	Use of reusable non-timber formwork to reduce the amount of C&D materials.	All areas/ During construction	Contractor(s)		ü		Implemented
S8.5	Encourage collection of aluminium cans and waste paper by individual collectors during construction with separate labelled bins provided to segregate these wastes from other general refuse by the workforce.	Land site/ During construction	Contractor(s)		ü		Implemented	ETWB TCW No. 33/2002, Management of Construction and Demolition Material Including Rock
S8.5	Any unused chemicals and those with remaining functional capacity will be recycled as far as possible.	Land site/ During construction	Contractor(s)		ü		N/A	-
S8.5	Proper storage and site practices to reduce the potential for damage or contamination of construction materials.	All areas/ During construction	Contractor(s)		ü		Implemented, reminder and observation issued	-
S8.5	Plan and stock construction materials carefully to reduce amount of waste generated and avoid unnecessary generation of waste.	All areas/ During construction	Contractor(s)		ü		Implemented	-

EIA Reference	Recommended Environmental Protection Measures/ Mitigation Measures	Objectives of the recommended measures & main concerns to address	Implementation Agent	Implementation Stage			Implementation Status	Relevant Legislation & Guidelines
EIA Reference			Implementation Agent	D	C	O	Implementation Status	Relevant Legislation & Guidelines
S8.5	A Sediment Quality Report (SQR) for sampling and chemical testing of the sediment will be prepared and submitted to the EPD for approval. The approved detailed sampling and chemical testing will be carried out prior to the commencement of the dredging activities to confirm the sediment disposal method.	Marine works/ During construction	Contractor(s)		ü		N/A	ETWB TC(W) No. 34/2002 and Dumping at Sea Ordinance (DASO)
S8.5	The management of dredged/ excavated sediment management requirement from ETWB TC(W) No. 34/2002 will be incorporated in the Specification of the Contract Documents.	Marine works/ During construction	WSD/ Contractor(s)		ü		Implemented
S8.5	The contractor will open a billing account with EPD in accordance with the Waste Disposal (Charges for Disposal of Construction Waste) Regulation for the payment of disposal charges.	Contract mobilisation/ During construction	Contractor(s)		ü		Implemented	Cap 354N Waste Disposal (Charges for Disposal of Construction Waste) Regulation
S8.5	A trip-ticket system will be established in accordance with DEVB TC(W) No. 6/2010 to monitor the reuse of surplus excavated materials off-site and disposal of construction waste and general refuse at transfer facilities/ landfills, and to control fly-tipping.	Contract mobilisation/ During construction	Contractor(s)		ü		Implemented	DEVB TC(W) No. 6/2010, Trip Ticket System for Disposal of Construction & Demolition Materials
S8.5	The project proponent will also conduct regular inspection of the waste management measures implemented on site as described in the Waste Management Plan.	All area/ During construction	Contractor(s)/ ET/ IEC		ü		Implemented	ETWB TC(W) No. 19/2005, Environmental Management on Construction Sites
S8.5	A recording system (similar to summary table as shown in Annex 5 and Annex 6 of Appendix G of ETWB TC(W) No. 19/2005) for the amount of waste generated, recycled and disposed of (including the disposal sites) will be established during the construction phase.	All area/ During construction	Contractor(s)		ü		Implemented	Annex 5 and Annex 6 of Appendix G of ETWB TC(W) No. 19/2005
S8.5	Inert C&D materials (public fill) will be reused within the Project as far as practicable.	All area/ During construction	Contractor(s)		ü		Implemented	-

EIA Reference	Recommended Environmental Protection Measures/ Mitigation Measures	Objectives of the recommended measures & main concerns to address	Implementation Agent	Implementation Stage			Implementation Status	Relevant Legislation & Guidelines
EIA Reference			Implementation Agent	D	C	O	Implementation Status	Relevant Legislation & Guidelines
S8.5	Public fill and construction waste shall be segregated and stored in different containers or skips to facilitate reuse or recycling of materials and their proper disposal.	All area/ During construction	Contractor(s)		ü		Implemented, rectified after reminder	-
S8.5	Specific areas of the work site will be designated for such segregation and storage if immediate use is not practicable.	All area/ During construction	Contractor(s)		ü		Implemented	-
S8.5	To reduce the potential dust and water quality impacts of site formation works, C&D materials will be wetted as quickly as possible to the extent practice after filling.	All area/ During construction	Contractor(s)		ü		Implemented	Air Pollution Control (Construction Dust) Regulation (Cap 311R); WPCO (Cap 358)
S8.5	Open stockpiles of excavated/ fill materials or construction wastes on-site should be covered with tarpaulin or similar fabric.	Land site/ During Construction, particularly dry season	Contractor(s)		ü		Implemented, rectified after observation	Air Pollution Control (Construction Dust) Regulation (Cap 311R)
S8.5	Chemical waste container shall be suitable for the substance they are holding, resistant to corrosion, maintained in a good condition, and securely closed.	All area/ During construction/ During operation	Contractor(s)/ WSD		ü	ü	Implemented, reminder issued	Waste Disposal (Chemical Waste) (General) Regulation; Code of Practice on the Packaging, Handling and Storage of Chemical Wastes
S8.5	Chemical waste container shall have a capacity of less than 450 L unless the specifications have been approved by the EPD.	All area/ During construction/ During operation	Contractor(s)/ WSD		ü	ü	Implemented
S8.5	A label in English and Chinese shall be displayed on the chemical container in accordance with instructions prescribed in Schedule 2 of the Regulations.	All area/ During construction/ During operation	Contractor(s)/ WSD		ü	ü	Implemented
S8.5	Storage areas for chemical waste shall be enclosed on at least 3 sides.	All area/ During construction/ During operation	Contractor(s)/ WSD		ü	ü	Implemented
S8.5	Storage areas for chemical waste shall have an impermeable floor and bunding, of capacity to accommodate 110% of the volume of the largest container or 20% by volume of the chemical waste stored in that area, whichever is the greatest.	All area/ During construction/ During operation	Contractor(s)/ WSD		ü	ü	Implemented
S8.5	Storage areas for chemical waste shall have adequate ventilation.	All area/ During construction/ During operation	Contractor(s)/ WSD		ü	ü	Implemented

EIA Reference	Recommended Environmental Protection Measures/ Mitigation Measures	Objectives of the recommended measures & main concerns to address	Implementation Agent	Implementation Stage			Implementation Status	Relevant Legislation & Guidelines
EIA Reference			Implementation Agent	D	C	O	Implementation Status
S8.5	Storage areas for chemical waste shall be covered to prevent rainfall entering (water collected within the bund must be tested and disposed of as chemical waste, if necessary).	All area/ During construction/ During operation	Contractor(s)/ WSD		ü	ü	Implemented
S8.5	Storage areas for chemical waste shall be arranged so that incompatible materials are appropriately separated.	All area/ During construction/ During operation	Contractor(s)/ WSD		ü	ü	Implemented
S8.5	General refuse will be stored in enclosed bins or compaction units separately from construction and chemical wastes.	All area/ During construction/ During operation	Contractor(s)/ WSD		ü	ü	Implemented, reminder and observation issued.
S8.5	Adequate number of waste containers will be provided to avoid over-spillage of waste.	All area/ During construction/ During operation	Contractor(s)/ WSD		ü	ü	Implemented	DEVB TC(W) No. 8/2010 Enhanced Specification for Site Cleanliness and Tidiness.
S8.5	A reputable waste collector will be employed by the Contractor to remove general refuse from the site, separately from construction and chemical wastes, on a daily basis to minimise odour, pest and litter impacts.	All area/ During construction/ During operation	Contractor(s)/ WSD		ü	ü	Implemented	-
S8.5	Recycling bins will be provided at strategic locations within the Site to facilitate recovery of recyclable materials (including aluminium can, wastepaper, glass bottles and plastic bottles) from the Site. Materials recovered will be sold for recycling.	All area/ During construction/ During operation	Contractor(s)/ WSD		ü	ü	Implemented	-
S8.5	To avoid any odour and litter impact, accurate number of portable toilets will be provided for workers on-site.	All area/ During construction	Contractor(s)		ü		Implemented	-
S8.5	The burning of refuse on construction sites is prohibited by law.	All area/ During construction	Contractor(s)		ü		Implemented	Air Pollution Control Ordinance (Cap 311)
S8.7	To facilitate monitoring and control over the contractors’ performance on waste management, a waste inspection and audit programme will be implemented throughout the construction phase.	All facilities/ During construction	ET/ IEC		ü		Implemented	-

Note: D - Design stage C - Construction O - Operation

EIA

Reference

Recommended Environmental Protection Measures/ Mitigation Measures

Objectives of the recommended measures & main concerns to address

Implementation Agent

Implementation Stage

Implementation Status

Relevant Legislation & Guidelines

Ecology

S9.7

For slope mitigation works within the Clear Water Bay Country Park, to avoid tree felling and damages to trees, the exact locations of the flexible barrier foundation plates, soil nails and rock dowels can be adjusted during detailed design, and a setback distance from existing trees is recommended to be maintained as far as practical. A detailed specification describing the exact locations of the flexible barrier foundation plates, soil nails and rock dowels will be prepared to illustrate how the setback

distance from existing trees would be implemented for tree avoidance.

Slope mitigation works area/ During detailed design/ During construction

Contractor(s)

N/A

S9.7

Pruning of tree canopies along the alignment of the flexible barriers shall be limited to a minimum.

Slope mitigation works area/ During construction

Contractor(s)

N/A

S9.7

The alignment of flexible barriers shall be optimized to preserve all species of conservation interest and minimize the impact to the existing vegetation as far as practicable. All individuals of Marsdenia lachnostoma within the slope mitigation areas shall be retained in- situ, by positioning the alignment of flexible barrier at a minimum 1.5m in a radius away from these individuals.

Slope mitigation works area/ During detailed design/ During construction

Contractor(s)

N/A

S9.7 and 9.10

At the detailed design stage prior to the commencement of the slope mitigation works, a vegetation survey shall be carried out at the slope mitigation areas within the Clear Water Bay Country Park to assess the condition and identify the location of each individual of Marsdenia lachnostoma and other flora species of conservation interest that may be directly affected by the construction works.

Slope mitigation works area/ During detailed design/ During construction

Contractor(s)

Implemented

S9.7

Temporary fencing will be installed to fence off the concerned species either in groups of individually within the works area and in the close proximity to prevent from being damaged and disturbed during construction. A sign identifying the site shall be attached to the fence and flagging tape shall be attached to the individuals to visualize their locations.

Slope mitigation works area/ During construction

Contractor(s)

N/A

EIA Reference	Recommended Environmental Protection Measures/ Mitigation Measures	Objectives of the recommended measures & main concerns to address	Implementation Agent	Implementation Stage			Implementation Status	Relevant Legislation & Guidelines
EIA Reference			Implementation Agent	D	C	O	Implementation Status	Relevant Legislation & Guidelines
S9.7 and S9.10	A specification for fencing and demarcating individuals of Marsdenai lachnostoma (or other flora species of conservation interest, if found) adjacent to the proposed alignment of the flexible barriers will be prepared to protect the species.	Slope mitigation works area/ During construction	Contractor(s)		ü		N/A	-
S9.7	Induction training shall also be provided to all site personnel in order to brief them on this flora of conservation interest including the locations and their importance.	Slope mitigation works area/ During construction	Contractor(s)		ü		N/A	-
S9.7	The resident site supervisory staff will closely monitor the conditions of concerned individuals during construction of flexible barriers in the close proximity.	Slope mitigation works area/ During construction	Contractor(s)		ü		N/A	-
S9.7	Erect fences along the boundary of the works area before the commencement of works to prevent vehicle movements and encroachment of personnel onto adjacent areas.	All area/ During construction	Contractor(s)		ü		Implemented	-
S9.7	Regularly check the work site boundaries to ensure that they are not breached, and that damage does not occur to surrounding areas.	All area/ During construction	Contractor(s)/ Environmental Team (ET)		ü		Implemented.	-
S9.7	Avoid any damage and disturbance, particularly those caused by filling and illegal dumping, to the surrounding habitats through proper management of waste disposal.	All area/ During construction	Contractor(s)		ü		Implemented	-
S9.7	Reinstate temporarily affected areas, particularly the habitats of plantation and shrubland-grassland immediately after completion of construction works, through on-site tree/shrub planting. The tree/shrub species will be chosen with reference to those in the surrounding area.	All area/ During construction	Contractor(s)		ü		N/A	-
S9.7	Affected habitats within the Clear Water Bay Country Bay shall be reinstated by hydro-seeding and planting of climbers and native shrub seedlings where practical upon completion of the slope mitigation works.	All area/ During construction	Contractor(s)		ü		N/A	-

Note: D - Design stage C - Construction O - Operation

EIA Reference	Recommended Environmental Protection Measures/ Mitigation Measures	Objectives of the recommended measures & main concerns to address	Implementation Agent	Implementation Stage			Implementation Status	Relevant Legislation & Guidelines
EIA Reference			Implementation Agent	D	C	O	Implementation Status	Relevant Legislation & Guidelines
	Landscape & Visual
S11.10 & 11.11	The construction area and area allowed for temporary structures, such as the contractor’s office, will be minimized to a practical minimum. (MM1)	All area/ Detailed design/ During construction/ During operation	WSD/ Contractor(s)	ü	ü	ü	Implemented	-
S11.10 & 11.11	At the detailed design stage, the design team will seek to minimize the landscape footprint of the Project and above ground facilities, while satisfying all other requirements. (MM2)	All area/ Detailed design/ During construction/ During operation	WSD/ Contractor(s)	ü	ü	ü	Implemented	-
S11.10 & 11.11	Design principles will be adopted to take into account the surrounding area, particularly Clear Water Bay Country Park behind and the nearby waterfront, with due consideration given to: - green roofs where practical (i.e. without equipment on the roof); - roadside planting; - aesthetic treatment of all structures; - vertical greening; - screen planting along application site; and - landscape enhancement with amenity planting where practical including planting along the edge (site boundary) fence with native shrubs where feasible, to reduce their visual impact and blend them into the surrounding landscape. (MM3)	All area/ Detailed design/ During construction/ During operation	WSD/ Contractor(s)	ü	ü	ü	Implemented	-
S11.10 & 11.11	All trees within the Project Site or the potential slope mitigation works area will be carefully protected during construction according to DEVB TCW No. 10/2013 - Tree Preservation (MM4)	All area/ Detailed design/ During construction/ During operation	WSD/ Contractor(s)	ü	ü	ü	Implemented	ETWB TCW No. 3/2006 - Tree Preservation.
S11.10 & 11.11	No tree within the Country Park will be felled. Trees within the Site unavoidably affected by the works will be transplanted where necessary and practical. For trees that need to be felled, compensatory planting will be provided to the satisfaction of relevant Government departments. A compensatory tree planting proposal including locations of tree compensation will be submitted to seek relevant government department’s approval, in accordance with DEVB TC(W) No. 10/2013. (MM5)	All area/ Detailed design/ During construction/ During operation	WSD/ Contractor(s)	ü	ü	ü	Implemented	DEVB TC(W) No. 10/2013

EIA Reference	Recommended Environmental Protection Measures/ Mitigation Measures	Objectives of the recommended measures & main concerns to address	Implementation Agent	Implementation Stage			Implementation Status	Relevant Legislation & Guidelines
EIA Reference			Implementation Agent	D	C	O	Implementation Status	Relevant Legislation & Guidelines
S11.10 & 11.11	Any slope mitigation works necessary to address natural terrain hazards, will be minimized to minimize any potential environmental impact to the Country Park e.g. soil nailing and rock stabilization will aim to avoid existing trees e.g. should any restoration of vegetation be necessary, the best planting matrix with native species will be established, with the aim of resembling the existing vegetation. (MM6)	All area/ Detailed design/ During construction/ During operation	WSD/ Contractor(s)	ü	ü	ü	N/A
S11.10 & 11.11	Dredging works for the installation of intake structures and outfall diffusers should be minimized to avoid or reduce any potential environmental impacts to as low as reasonably practicable (ALARP). The intake and outfall structures (e.g. intake openings and diffuser heads) will be prefabricated and transferred to site for installation. (MM7)	All area/ Detailed design/ During construction/ During operation	WSD/ Contractor(s)	ü	ü	ü	Implemented
S11.10 & 11.11	All night-time lighting will be reduced to a practical minimum both in terms of number of level and will be hooded and directional. (MM8) units and lux level and will be hooded and directional. (MM8)	All area/ Detailed design/ During construction/ During operation	WSD/ Contractor(s)	ü	ü	ü	Implemented	-

Note: D - Design stage C - Construction O - Operation

EIA Reference	Recommended Environmental Protection Measures/ Mitigation Measures	Objectives of the recommended measures & main concerns to address	Implementation Agent	Implementation Stage			Implementation Status	Relevant Legislation & Guidelines
EIA Reference			Implementation Agent	D	C	O	Implementation Status	Relevant Legislation & Guidelines
	Landfill Gas Hazard
S12.7	During all works, safety procedures should be implemented to minimise the risks of fires and explosions, asphyxiation of workers and toxicity effects resulting from contact with contaminated soil and groundwater.	All area/ Detailed design/ During construction/ During operation	Contractor(s)	ü	ü	ü	Implemented	-
S12.7	During trenching and excavation as well as creation of confined spaces at near to or below ground level, precautions should be clearly laid down and rigidly Gas detection equipment and appropriate breathing apparatus should be available and used when entering confined spaces or trenches deeper than 1 metre.	All area/ Detailed design/ During construction/ During operation	Contractor(s)	ü	ü	ü	Implemented	-
S12.7	The Contractor should make the workers are aware of potential hazards of working in confined spaces (any chamber, manhole or culvert which is large enough to permit access to personnel). Such work in confined spaces is controlled by the Factories and Industrial Undertakings (Confined Spaces) Regulations of the Factories and Industrial Undertakings Ordinance. Following the Safety Guide to Working in Confined Spaces ensures compliance with the above regulations.	All area/ Detailed design/ During construction/ During operation	Contractor(s)	ü	ü	ü	Implemented	-
S12.7	Safety officers, specifically trained with regard to landfill gas and leachate related hazards and the appropriate actions to take in adverse circumstances, should be present on the site throughout the works, in particular, when works are undertaken below grade.	All area/ Detailed design/ During construction/ During operation	Contractor(s)	ü	ü	ü	Implemented	-
S12.7	All personnel who work on site and all visitors to the site should be made aware of the possibility of ignition of gas in the vicinity of the works, the possible presence of contaminated water and the need to avoid physical contact with it.	All area/ Detailed design/ During construction/ During operation	Contractor(s)	ü	ü	ü	Implemented	-
S12.7	Monitoring for landfill gas should be undertaken in all excavations, manholes, chambers (particularly during pipe jacking) and any confined spaces through the use of an intrinsically safe portable instrument, appropriately calibrated and capable of measuring the concentrations of methane. carbon dioxide and oxygen.	All area/ Detailed design/ During construction/ During operation	Contractor(s)	ü	ü	ü	Implemented	-

EIA Reference	Recommended Environmental Protection Measures/ Mitigation Measures	Objectives of the recommended measures & main concerns to address	Implementation Agent	Implementation Stage			Implementation Status	Relevant Legislation & Guidelines
EIA Reference			Implementation Agent	D	C	O	Implementation Status	Relevant Legislation & Guidelines
S12.7	Monitoring frequency and areas to be monitored should be specified prior to commencement of groundwork, either by the Safety Officer, or by an appropriately qualified person. All measurements should be recorded and documented.	All area/ Detailed design/ During construction/ During operation	Contractor(s)	ü	ü	ü	Implemented	-
S12.7	Proceed drilling with adequate care and precautions against the potential hazards which may be encountered.	All area/ Detailed design/ During construction/ During operation	Contractor(s)	ü	ü	ü	Implemented	-
S12.7	Prior to the commencement of the site works, the drilling contractor should devise a 'method-of- working' statement covering all normal and emergency procedures (including but not limited to number of operatives, experience and special skills of operatives, normal method of operations, emergency procedures, supervisors responsibilities, storage and use of safety equipment, safety procedures and signs, barriers and guarding). The site supervisor and all operatives must be familiar with this statement.	All area/ During construction/ During operation	Contractor(s)	ü	ü	ü	Implemented	-
S12.7	Where below ground service entries are necessary to the Incoming Switchgear Room, 132 kV Substation and Chlorine Store (I) and (II), the entry point should be sealed to prevent gas entry. In addition, any below grade cable trenches entering the Incoming Switchgear Room and 132 kV Substation can become the pathway for landfill gas and hence grilled metal covers should be used.	All area/ Detailed design/ During construction/ During operation	Contractor(s)	ü	ü	ü	N/A	-
S12.7	It is recommended regular landfill gas monitoring should be carried out at the Incoming Switchgear Room, 132 kV Substation and Chlorine Store (I) and (II). The monitoring frequency will be monthly for the first year of operation. If the monitoring results show no sign of landfill gas migration, reduce the monitoring frequency to once every six months.	All area/ Detailed design/ During construction/ During operation	Contractor(s)	ü	ü	ü	N/A	-
S12.7	The manholes and utility pits within the Project Site and along the fresh water mains. Each manhole/ utility pit should be monitored with two measurements (at mid depth and base). Each measurement should be monitored for a minimum of 10 minutes. A steady reading and peak reading should be recorded at each manhole/ utility pit	All area/ Detailed design/ During construction/ During operation	Contractor(s)	ü	ü	ü	Implemented	-

EIA Reference	Recommended Environmental Protection Measures/ Mitigation Measures	Objectives of the recommended measures & main concerns to address	Implementation Agent	Implementation Stage			Implementation Status	Relevant Legislation & Guidelines
EIA Reference			Implementation Agent	D	C	O	Implementation Status	Relevant Legislation & Guidelines
	and for each measurement. The need for venting the manhole/ utility pit and further monitoring will be reviewed after the initial monitoring.
S12.7	All construction, operation and maintenance personnel working on-site as well as visitors should be made aware of the hazards of landfill gas and its possible presence on- site. This should be achieved through a combination of posting warning signs in prominent places and also by access to detailed information on landfill gas hazards and the designs and procedural means by which these hazards are being minimized on-site.	All area/ Detailed design/ During construction/ During operation	Contractor(s)	ü	ü	ü	Implemented	-

Note: D - Design stage C - Construction O - Operation

Appendix D

Water Quality Graphical Presentation

Appendix E

Site Inspection Proforma

Table E1 Site Inspection Observation Record

Date	Environmental Observations	Follow-up Status
April 2021
07 April 2021	No major observation was reported on the respective day.	Nil
13 April 2021
20 April 2021
30 April 2021
May 2021
04 May 2021	No major observation was reported on the respective day.	Nil
12 May 2021	No major observation was reported on the respective day.	Nil
18 May 2021	1. Chemical waste container was observed in the general waste collection area at Combined Shaft Area (near to seafront)	1. Chemical drum was sorted out from the waste skip.
25 May 2021	1. Chemicals were not placed inside a drip tray at drainage channel near to No. 2 water treatment tank.	1. Drip tray was provided.
31 May 2021	No major observation was reported on the respective day.	Nil
June 2021
08 June 2021	No major observation was reported on the respective day.	Nil
15 June 2021	No major observation was reported on the respective day.	Nil
22 June 2021	1. Overflow of trapped concrete water at sump pit near to worker resting area was observed. More stringent mitigation measure should be implemented to prevent the wastewater discharge into the open channel. The Contractor was reminded to consider capacity of sump pit especially at the area of concrete washing.	1. Soak/ sump pit excavated to expand, and sandbag were provided to enhance desilting capability.
30 June 2021	No major observation was reported on the respective day.	Nil
July 2021
06 July 2021	No major observation was reported on the respective day.	Nil
13 July 2021
20 July 2021

Date

Environmental Observations

Follow-up Status

30 July 2021

1. Oil stain/ spillage was observed on multiple

areas of sea surface around Intake Shaft Area. The Main Contractor was reminded to take remediate actions immediately.

1. Oil stains cleaned up

with absorbent.

August 2021

03 August 2021

1. Chemicals were not placed inside a drip tray

at Product Water Storage Area.

1. Drip tray provided.

10 August 2021

No major observation was reported on the respective day.

Nil

17 August 2021

24 August 2021

1. Gillies were observed not protected by sandbags and geotextile at Wan Po Road.

1. Road gullies of concern were covered with tarpaulin sheet to avoid soil from dropping in and silty runoff from

flowing in.

31 August 2021

1. Overflowing of concrete washing wastewater was observed at Concrete Washing Area. The Main Contractor was reminded to increase the wastewater holding capacity and add the earth bunds/ sandbags at the exit to prevent intreated water overflowing from the

construction site.

1. Sandbags bunds provided to desilt the wastewater before darning to the perimeter drain.

September 2021

07 September 2021

1. Trapped general wastes materials were observed in the drainage open channel near to Reverse Osmosis Area. The Main Contractor was reminded to remove the trapped

materials to allow efficient drainage.

1. Trapped materials was removed.

13 September 2021

1. Chemical wastes were observed along the general waste sorting area at ActiDAFF Area. The Main Contractor was reminded that chemical wastes should be stored in chemical waste storage container and separately from the general wastes.

2. General wastes were observed on the sea surface next to the marine barge at Outfall Shaft. The Main Contractor was reminded that all general wastes should be stored in wastes

skips (observation).

1. Waste removed and separated in proper storage area (i.e.: chemical removed into chemical waste storage container)

2. Waste was removed.

3. Wastes in channel were removed.

4. Chemical removed into

proper storage area.

Date	Environmental Observations	Follow-up Status
	3. General wastes were found in the open cannel. These materials should be removed to allow efficient drainage (Between ActiDAFF and Reverses Osmosis Area) 4. Chemicals were found not stored in drip tray at the derrick barge at Intake Shaft Area
21 September 2021	No major observation was reported on the respective day.	Nil
28 September 2021	1. Chemicals were found not stored in drip trays at barge at Intake Shaft Area.	1. Chemicals were stored in suitable storage area.
October 2021
06 October 2021	No major observation was reported on the respective day.	Nil
15 October 2021	1. The Main Contractor was reminded to add sandbags/earth bunds at the exit of Concrete Washing Area to ensure no effluent should be discharged from the construction site without treatment (Concrete Washing Area) 2. Chemical container was observed at general waste storage area (Combined Shaft Area)	1. Sandbags were added. 2. Chemical waste stored on suitable area for proper disposal.
19 October 2021	No major observation was reported on the respective day.	Nil
29 October 2021	1. Proper storage for chemicals and chemical waste shall be provided (i.e., drip tray) at Combined Shaft Area.	1. Drip tray was provided.
November 2021
02 November 2021	No major observation was reported on the respective day.	Nil
09 November 2021	1. A drum of chemical was observed not placed on a drip tray at Worker Resting Area near to PWST Area	1. Chemical was stored in suitable area.
16 November 2021	No major observation was reported on the respective day.	Nil
26 November 2021	1. Chemicals were observed not placed on a drip tray at Worker Area, Reverse Osmosis Area, and Steel Bar Area.	1. Chemical were arranged to store into a proper storage area asap. After that there is no chemical to be found on the workplace.

Date	Environmental Observations	Follow-up Status
30 November 2021	No major observation was reported on the respective day.	Nil
December 2021
07 December 2021	1. Chemicals were not placed on a drip tray and cap added at Central Chiller Plant Building, metal storage area, between Reverse Osmosis/ActiDAFF Area and Administration Building	1. Removed the chemical to proper storage area as soon as possible.
15 December 2021	1. Chemicals were not placed on a drip tray at metal storage area, near to the area between Combined Shaft Area/ Seafront Area, near to VTEC Area.	1. Chemicals removed to proper storage area.
22 December 2021	No major observation was reported on the respective day.	Nil
31 December 2021	No major observation was reported on the respective day.	Nil
January 2022
04 January 2022	No major observation was reported on the respective day.	Nil
11 January 2022	No major observation was reported on the respective day.	Nil
18 January 2022	1. It has been observed during the site inspection on 18 January 2022 that there is a new sources of underground seepage marine water in the outfall shaft caisson that was not by-pass through an uncontaminated isolation system. The main contractor was urged to take immediate remediate action to ensure the seepage marine water should be contained in an isolation system before by- pass through a silt curtain	1. The seepage water is separated.
26 January 2022	1. The main contractor was reminded that all chemical containers should be placed in drip tray (VTEC Area, Product water Storage Area and Reverse Osmosis Area) & Chemical waste should be stored in an appropriate chemical waste container at reverse osmosis area	1. Chemical moved to proper storage area.
31 January 2022	No major observation was reported on the respective day.	Nil
February 2022
08 February 2022		Nil

Contract No. 13/WSD/17

Environmental Management Plan for Design, Build and Operate First Stage of Tseung Kwan O Desalination Plant

Appendix F - Monthly Summary Waste Flow Table

Name of Department: WSD Contract No.: 13/WSD/17

Monthly Summary Waste Flow Table for 2021 (year)

Month	Actual Quantities of Inert C&D Materials Generated Monthly						Actual Quantities of C&D Wastes Generated Monthly
	Total Quantity Generated	Hard Rock and Large Broken Concrete	Reused in the Contract	Reused in other Projects	Disposed as Public Fill	Imported Fill	Metals	Paper/ cardboard packaging	Plastics (see Note 3)	Chemical Waste	Others, e.g. general refuse
	(in '000kg)	(in '000kg)	(in '000kg)	(in '000kg)	(in '000kg)	(in '000kg)	(in '000 kg)	(in '000kg)	(in '000kg)	(in '000kg)	(in '000kg)
Jan	11823.060	0.000	0.000	11816.130	6.930	0.000	0.000	0.000	0.000	0.000	73.960
Feb	434.090	0.000	0.000	434.090	0.000	0.000	14.767	0.123	0.008	0.000	45.080
Mar	91.710	0.000	0.000	0.000	91.710	0.000	0.002	0.155	0.010	0.000	122.940
Apr	0.000	0.000	0.000	0.000	0.000	0.000	28.931	0.057	0.002	0.000	89.450
May	1557.500	0.000	0.000	0.000	1557.500	0.000	0.005	0.108	0.009	0.000	70.750
Jun	4278.380	0.000	0.000	0.000	4278.380	0.000	0.001	0.088	0.005	0.000	91.540
Sub-total	18184.740	0.000	0.000	12250.220	5934.520	0.000	43.706	0.530	0.034	0.000	493.720
Jul	365.150	0.000	0.000	0.000	365.150	0.000	0.003	0.120	0.005	0.000	65.770
Aug	42.340	0.000	0.000	0.000	42.340	0.000	0.000	0.001	0.006	0.000	74.070
Sep	66.690	0.000	0.000	0.000	66.690	0.000	0.004	0.002	0.003	0.000	75.880
Oct	578.870	0.000	0.000	0.000	578.870	0.000	0.006	0.510	0.018	0.000	88.390
Nov	470.660	0.000	0.000	0.000	470.660	0.000	0.000	0.000	0.000	0.000	162.500
Dec	457.090	0.000	0.000	0.000	457.090	0.000	0.000	0.130	0.030	0.000	131.270
Total	20165.540	0.000	0.000	12250.220	7915.320	0.000	43.718	1.293	0.096	0.000	1091.600

Notes: (1) The performance targets are given in Section 1.69 of Specification B

(2) The waste flow table shall also include C&D materials that are specified in the Contract to be imported for use at the Site.

(3) Plastics refer to plastic bottles/containers, plastic sheets/ foam from packaging material

* The data will be reviewed in next month.

Contract No. 13/WSD/17

Environmental Management Plan for Design, Build and Operate First Stage of Tseung Kwan O Desalination Plant

Appendix F - Monthly Summary Waste Flow Table

Name of Department: WSD Contract No.: 13/WSD/17

Monthly Summary Waste Flow Table for 2022 (year)

Month	Actual Quantities of Inert C&D Materials Generated Monthly						Actual Quantities of C&D Wastes Generated Monthly
	Total Quantity Generated	Hard Rock and Large Broken Concrete	Reused in the Contract	Reused in other Projects	Disposed as Public Fill	Imported Fill	Metals	Paper/ cardboard packaging	Plastics (see Note 3)	Chemical Waste	Others, e.g. general refuse
	(in '000kg)	(in '000kg)	(in '000kg)	(in '000kg)	(in '000kg)	(in '000kg)	(in '000 kg)	(in '000kg)	(in '000kg)	(in '000kg)	(in '000kg)
Jan	233.850	0.000	0.000	0.000	233.850	0.000	0.000	0.069	0.005	0.000	109.020
Feb	175.850	0.000	0.000	0.000	175.850	0.000	0.000	0.000	0.000	0.296	293.130
Mar	68.790	0.000	0.000	0.000	68.790	0.000	0.000	0.000	0.000	0.000	54.140
Apr	29.050	0.000	0.000	0.000	29.050	0.000	0.001	0.165	0.004	0.000	113.780
May
Jun
Sub-total	594.800	0.000	0.000	0.000	594.800	0.000	0.001	0.234	0.009	0.296	570.070
Jul
Aug
Sep
Oct
Nov
Dec
Total	594.800	0.000	0.000	0.000	594.800	0.000	0.001	0.234	0.009	0.296	570.070

Note: (1) The performance targets are given in Section 1.69 of Specification B

(2) The waste flow table shall also include C&D materials that are specified in the Contract to be imported for use at the Site.

(3) Plastics refer to plastic bottles/containers, plastic sheets/ foam from packaging material

Table G1 Cumulative Statistics on Exceedances

Environmental Monitoring	Parameter	No. of non-Project related exceedance in the reporting period		Total No. of non- Project related exceedance in the reporting period	No. of Project related exceedance in the reporting period		Total No. of Project related exceedance in the reporting period	Total No. recorded since the project commencement
Environmental Monitoring	Parameter	AL	LL		AL	LL		Total No. recorded since the project commencement
Noise	Leq (30min)	N/A	N/A	N/A	N/A	N/A	N/A	N/A
Water Quality	DO	0	0	0	0	0	0	0
	Turbidity	0	0	0	0	0	0	0
	SS	537	369	906	0	0	0	913
	pH	0	0	0	0	0	0	0
Landfill Gas	O2	0	0	0	0	0	0	0
	CH4	0	0	0	0	0	0	0
	CO2	0	0	0	0	0	0	0

Appendix H

Complaint Log

Statistical Summary of Environmental Complaints

Reporting Period

Environmental Complaint Statistics

Frequency

Cumulative

Complaint Nature

1 April 2021

30 April 2022

N/A

Statistical Summary of Environmental Summons

Reporting Period

Environmental Summons Statistics

Frequency

Cumulative

Details

1 April 2021

30 April 2022

N/A

Statistical Summary of Environmental Prosecution

Reporting Period

Environmental Prosecution Statistics

Frequency

Cumulative

Details

1 April 2021

30 April 2022

N/A

Appendix I

Event / Action Plan for Noise and Water Quality Monitoring Exceedance

Table I1 Event and Action Plan for Construction Noise Monitoring

Event	Action
Event	ET	IEC	ER	Contractor
Action Level	1. Carry out investigation to identify the source and cause of the complaint/ exceedance(s) 2. Notify IEC, ER, and Contractor and report the results of investigation to the Contractor, ER and the IEC 3. Discuss with the Contractor and IEC for remedial measures required 4. If the complaint is related to the Project, conduct additional monitoring for checking mitigation effectiveness and report the findings and results to the IEC, ER and the Contractor	1. Review the analyzed results submitted by the ET 2. Review the proposed remedial measures by the Contractor and advise the ER accordingly 3. Supervise the implementation of remedial measures	1. Confirm receipt of Notification of Exceedance in writing 2. Require Contractor to propose remedial measures for the analyzed noise problem 3. Ensure remedial measures are properly implemented	1. Submit noise mitigation proposals, if required, to the IEC and ER 2. Implement noise mitigation proposals
Limit Level	1. Carry out investigation to identify the source and cause of the exceedance 2. Notify IEC, ER, Project Proponent, EPD and Contractor 3. Repeat measurements to confirm findings 4. Provide investigation report to IEC, ER, EPD and Contractor he causes of the exceedances 5. If the exceedance is related to the Project, assess effectiveness by additional monitoring 6. Report the remedial action implemented and the additional monitoring results to IEC, EPD, ER and Contractor 7. If exceedance stops, cease additional monitoring	1. Review the analyzed results submitted by the ET 2. Discuss the potential remedial measures with ER, ET Leader and Contractor 3. Review Contractors remedial actions whenever necessary to assure their effectiveness and advise the ER accordingly 4. Supervise the implementation of remedial measures	1. Confirm receipt of Notification of Exceedance in writing 2. Require the Contractor to propose remedial measures for the analyzed noise problem 3. Ensure remedial measures are properly implemented 4. If exceedance continues, consider what activity of the work is responsible and instruct the Contractor, in agreement with the Project Proponent, to stop that activity of work until the exceedance is abated	1. Take immediate action to avoid further exceedance 2. Submit proposals for remedial actions to IEC and ER within 3 working days of notification 3. Implement the agreed proposals 4. Resubmit proposals if problem still not under control 5. Stop the relevant activity of works as determined by the Project Proponent until the exceedance is abated

Table I2 Event and Action Plan for Water Quality Monitoring

Event

Action

IEC

Contract(s)

Action Level being exceeded by one sampling day

1. Repeat in situ measurement on the next day of exceedance to confirm findings;

2. Check monitoring data, plant, equipment and Contractor(s)’s working methods;

3. Identify source(s) of impact and record in notification of exceedance;

4. Inform IEC, Contractor(s) and ER.

1. Check monitoring data submitted by ET and Contractor(s)’s working methods;

2. Inform EPD.

1. Confirm receipt of notification of exceedance in writing;

2. Check plant and equipment and rectify unacceptable practice

1. Confirm receipt of notification of exceedance in writing.

Action Level being exceeded by two or more consecutive sampling days

1. Repeat in situ measurement on the next day of exceedance to confirm findings;

2. Check monitoring data, plant, equipment and Contractor(s)’s working methods;

3. Identify source(s) of impact and record in notification of exceedance;

4. Inform IEC, Contractor(s) and ER;

5. Discuss with IEC and Contractor(s) on additional mitigation measures and ensure that they are implemented

1. Check monitoring data submitted by ET and Contractor(s)’s working methods;

2. Inform EPD;

3. Discuss with ET and Contractor(s) on additional mitigation measures and advise ER accordingly;

4. Assess the effectiveness of the implemented mitigation measures

1. Confirm receipt of notification of exceedance in writing;

2. Check plant and equipment and rectify unacceptable practice;

3. Consider changes of working methods;

4. Discuss with ET and IEC on additional mitigation measures and propose them to ER within 3 working days;

5. Implement the agreed

1. Confirm receipt of notification of exceedance in writing;

2. Discuss with the IEC on the proposed additional mitigation measures and agree on the mitigation measures to be implemented.

3. Ensure additional mitigation measures are properly implemented.

Limit Level being exceeded by one sampling day

4. Repeat in situ measurement on the next day of exceedance to confirm findings;

5. Check monitoring data, plant, equipment and Contractor(s)’s working methods;

6. Identify source(s) of impact and record in notification of exceedance;

7. Inform IEC, Contractor(s) and ER;

8. Discuss with IEC and Contractor(s) on additional mitigation measures and ensure that they are implemented

1. Check monitoring data submitted by ET and Contractor(s)’s working methods;

2. Inform EPD;

3. Discuss with ET and Contractor(s) on additional mitigation measures and advise ER accordingly;

4. Assess the effectiveness of the implemented mitigation measures.

1. Confirm receipt of notification of exceedance in writing;

2. Check plant and equipment and rectify unacceptable practice;

3. Critically review the need to change working methods;

4. Discuss with ET and IEC on additional mitigation measures and propose them to ER within 3 working days;

5. Implement the agreed

1. Confirm receipt of notification of exceedance in writing;

2. Discuss with the IEC on the proposed additional mitigation measures and agree on the mitigation measures to be implemented.

3. Ensure additional mitigation measures are properly implemented.

4. Request Contractor(s) to critically review the working methods.

Event

Action

IEC

Contract(s)

Limit Level being exceeded by two or more

consecutive sampling days

1. Repeat in situ measurement on the next day of exceedance to confirm findings;

2. Check monitoring data, plant, equipment and Contractor(s)’s working methods;

3. Identify source(s) of impact and record in notification of exceedance;

4. Inform IEC, Contractor(s) and ER;

5. Discuss with IEC and Contractor(s) on additional mitigation measures and ensure that they are implemented

1. Check monitoring data submitted by ET and Contractor(s)’s working methods;

2. Inform EPD;

3. Discuss with ET and Contractor(s) on additional mitigation measures and advise ER accordingly;

4. Assess the effectiveness of the implemented mitigation measures.

1. Confirm receipt of notification of exceedance in writing;

2. Check plant and equipment and rectify unacceptable practice;

3. Critically review the need to change working methods;

4. Discuss with ET and IEC on additional mitigation measures and propose them to ER within 3 working days;

5. Implement the agreed mitigation measures.

6. As directed by ER, slow down or stop all or part of the marine construction

works/ production volume of the desalination plant until no exceedance of Limit Level.

1. Confirm receipt of notification of exceedance in writing;

2. Discuss with the IEC on the proposed additional mitigation measures and agree on the mitigation measures to be implemented.

3. Ensure additional mitigation measures are properly implemented.

4. Request Contractor(s) to critically review the working methods;

5. Consider and instruct, if necessary, the Contractor(s) to slow down or to stop all or part of the marine construction

works/production volume of the desalination plant until no exceedance of Limit Level.

Station	Easting	Northing	Description
WSR37	846655	813810	Ecological sensitive receiver at Tit Cham Chau
NF1	846542	813614	Edge of mixing zone, ~ 200m west of outfall diffuser
NF2	846942	813614	Edge of mixing zone, ~ 200m east of outfall diffuser
NF3	846742	813414	Edge of mixing zone, ~ 200m south of outfall diffuser

Date	Environmental Observations	Follow-up Status
17 February 2022	No major observation was reported on the respective day.
23 February 2022
28 February 2022
March 2022
08 March 2022	1. Drip tray should be provided for chemical storage.	1. Chemical moved and stored in proper area.
15 March 2022	No major observation was reported on the respective day.	Nil
23 March 2022
30 March 2022
April 2022
06 April 2022	No major observation was reported on the respective day.	Nil
12 April 2022
19 April 2022
29 April 2022

Environmental Monitoring works	Frequency
Noise Monitoring	N/A
Water Quality Monitoring	166
Landfill Gas Monitoring	252
Environmental Site Inspection	56

CONTENTS

Executive Summary

Introduction

Summary of environmental monitoring and audit works

Table I Summary of Environmental Monitoring Works

Complaint Handling and Prosecution

Reporting Change

1. Basic Contract Information

1.1. Background

1.2. The Reporting Scope

1.3. Contract Organization

Figure 1.1 Contract Organization Chart

Table 1.1 Contact Details of Key Personnel

1.4. Summary of Construction Works

Table 1.2 Summary of Status for Key Environmental Aspects under the EM&A Manual

2. Noise

2.1. Monitoring Requirements

2.2. Monitoring Locations

Table 2.1 Noise Sensitive Receivers

2.3. Monitoring Parameter, frequency and duration

Table 2.2 Noise Monitoring Parameters, Time, Frequency and Duration

2.4. Impact Monitoring Methodology

2.5. Action and Limit Levels

Table 2.3 Action and Limit Levels for Noise per EM&A Manual

2.6. Monitoring Results and Observations

Figure 2.4 Site Layout Plan with Noise Sensitive Receivers and Desalination Plant

3. Water Quality

3.1. Water Quality Parameters

Table 3.1 Parameters measured in the impact marine water quality monitoring

3.2. Monitoring Equipment

3.3. Monitoring Location

Table 3.3 Location of Impact Water Quality Monitoring Station

Figure 3.1 Impact water quality monitoring locations under EM&A Manual

3.4. Action and Limit levels

Table 3.4 Derived Action and Limit Levels for Water Quality

3.5. Monitoring Programme

3.6. Monitoring results and observations

4. Waste

5. Landfill Gas Monitoring

5.1. Monitoring Requirement

Figure 5.1 Overview of the SENT Extension Consultation Zone and the Contract Site Area

Figure 5.2 Location Map for Landfill Gas Monitoring at Wan Po Road

5.2. Monitoring Parameters

5.3. MONITORING EQUIPMENT

5.4. Monitoring results and observations

Table 5.1 Action / Limit Levels and Event and Action Plan for LFG Hazard

Figure 6.1 Environmental Complaint Handling Procedures

7. EM&A Site Inspection

8. Conclusions and Recommendations

Table E1 Site Inspection Observation Record

Contract No. 13/WSD/17

Environmental Management Plan for Design, Build and Operate First Stage of Tseung Kwan O Desalination Plant

Table I1 Event and Action Plan for Construction Noise Monitoring

Table I2 Event and Action Plan for Water Quality Monitoring