Revision History

Rev.

Description of Modification

Date

1.

First Issue for Comments

22/03/2024

2.

Revisd according Comments

27/03/2024

3.

Revisd according Comments

28/03/2024

4

Revisd according Comments

02/04/2024

CONTENTS

Executive Summary.................................................................................................................................................................. 1

      Basic Project Information............................................................................................................................................ 6

      Noise................................................................................................................................................................................... 13

       Water Quality.................................................................................................................................................................. 17

      Waste.................................................................................................................................................................................. 26

       Landfill Gas Monitoring.............................................................................................................................................. 27

      Summary of Monitoring Exceedance, Complaints, Notification of Summons and Prosecutions31

     EM&A Site Inspection.................................................................................................................................................. 33

      Conclusions and Recommendations..................................................................................................................... 34

 

 

Appendix A                 Master Programme

 

Appendix B                 Overview of Desalination Plant in Tseung Kwan O

 

Appendix C                 Summary of Implementation Status of Environmental Mitigation

Appendix D                 Water Quality Monitoring Graphical Presentation

Appendix E                 Summary of Exceedances

Appendix F                 Waste Flow Table

Appendix G                 Complaint Log

 

Appendix H                 Event/Action Plan for Water Quality Monitoring

Appendix I                  Event/Action Plan for Construction Noise Exceedance

Appendix J                  Event/Action Plan for Coral Monitoring Exceedance

 

 

 

 

 

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 16th Quarterly EM&A 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 December 2023 to 29 February 2024.

A4. The EM&A programme for this contract has covered environmental monitoring on construction noise level at selected NSRs 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 Main Works Undertaken & Key Mitigation Measures Implemented

 

A5.        Key activities carried out in this reporting period for the Project included the followings:

Administration Building

-            Carrying out the floor tiles works at G/F

-            External wall painting works

-            Construction of block work for pipe duct

-            Installation of building services, cable laying, electrical switchboard, testing and commissioning

Chemical building

-            Installation of leakage collection pit cover

-            Underground utility construction work

-            Landscape work at roof

-            Defect rectification

Main Electrical & Central Chiller Plant Building

-            Installation of chillers, building services, electrical switchboard and cable laying

-            Installation of Roof Tile for Fuel Tank Room

 

ActiDAFF

-            Underground utility construction work

-            Installation of access opening cover

-            Construction of staircase no 2

-            Installation of mechanical equipment, piping system, installation of building services, electrical switchboards and cable laying, fiber-reinforced plastic cover Installation

Product Water Storage Tank Building

-            Installation of Cat Ladders in Water Tank A

-            Sealing slab opening in water Tank A

-            Re-construction of Wall PW8 in Water Tank A

-            Installation of metal cladding, building services, cable laying, mechanical equipment, steel pipe

-            Underground utility construction

OSCG Building

-             Protective Coating for dangerous goods Rooms

-             Placing Soil Mix at Roof

-             Installation of Metal Cladding (at East Side) and Roller Shutters and Window

-            Underground utility construction work

-            Installation of building services, mechanical equipment and cable laying, testing and commissioning

Reverse Osmosis Building

-           Installation of building services, electrical switchboard, cable laying, Installation of mechanical equipment, steel pipe, Glass Reinforced Plastic pipe, raised floor, testing and commissioning

-           Installation of metal cladding, handrailing, roller shutters, glass canopy and

glass house

-           Underground utility construction work

-           Construction of Reinforced Concrete External Wall for Male Toilet

Post Treatment Building

-           Installation of building services, Installation of mechanical equipment and piping system, Pressure Test

-           Underground utility construction work

-           Installation of Cat Ladders in Water Tanks

-           Installation of Metal Cladding

-           Placing Soil Mix at Roof

Inspection corridor

-            Installation of building services, Lift installation

-            Construction of roof tiling works and staircases no. 2

-            Installation of Movement Joints and glass window

 

CO2 Tanks

-          Installation of pipes and electrical wiring, testing and commissioning Combined Shaft and Pump room

-             Finishing, Grating; window; louvre installation Other

-            Watermain works at CLP 132 kV Substation

-             Staircases construction; Steel Bridge assembly and installation at elevated walkway

-             Road Construction, Footpath Construction, Landscape Construction, Irrigation System Construction, Water Pressure Test for Fire Services and Plumbing System in Zone A, B, C

-             Structure Construction, steel fence erection of Wave Deflector Wall at seawall area

-             Slope work

 

A6.        The major environmental impacts brought by the above construction works include:

-     Construction dust and noise generation from excavation works, construction works, slope works and rock cutting works; and

-     Waste generation from the construction activities

 

A7.        The key environmental mitigation measures implemented for the Project in this reporting period associated with the above construction works include:

-     Dust suppression by regular wetting and water spraying for construction works;

-     Reduction of noise from equipment and machinery on-site and regularly inspection to machinery and plants/vehicles on-site to ensure proper functioning;

-     Sorting and storage of general refuse and construction waste;

-     Deployment of silt curtain at the inshore water outflow; and

-     Deployment protective fencing for trees.

Summary of Exceedance & Investigation & Follow-up

 

A8.  No noise monitoring was conducted during the reporting period since there are no project- related construction activities undertaken within a radius of 300m from the monitoring locations. No exceedance of the Action Level was recorded during the reporting period.

A9.  Referring to EM&A Manual, the general water quality monitoring should be carried out when there are marine-related construction activities undertaken. General water quality monitoring at the ten monitoring stations (CE, CF, WSR1, WSR2, WSR3, WSR4, WSR16, WSR33, WSR36 and WSR37) was ceased from 1 September 2023 due to the completion of marine-related construction works.

A10. The pre-operation (testing and commissioning) phase of desalination plant started in reporting period. The EM&A works for pre-operation phase water quality were conducted during the reporting period in accordance with the EM&A Manual. Seventy-eight (78) of the

pre-operation phase water quality monitoring results of SS obtained had exceeded the Action Level. Fifty-nine (59) of the pre-operation phase water quality monitoring results of SS obtained during the reporting period had exceeded the Limit Level. After investigation, all exceedances were concluded unrelated to the Project.

A11. Dechlorinated effluent monitoring at two sampling locations (Sampling point T1GKC01AA502/manhole 18) during disinfection was carried out by AJCJV on 2 and 3 December 2023 for Total Residual Chlorine monitoring (TRC). Seven (7) of dechlorinated effluent sample were taken in Sampling point T1GKC01AA502/manhole 18. No TRC exceedance of action or limit levels was obtained during the discharge of dechlorinated effluent. The dechlorinated effluent monitoring is completed.

A12. In this reporting period, 216 times of landfill gas monitoring were recorded at Wan Po Road (Ch0+390 - Ch0+780) and (Ch0+400 - Ch1+200). No action and limit level exceedance for methane, oxygen and carbon dioxide was recorded.

A13. Pre-operation phase monthly coral monitoring was conducted during the reporting period on 28 December 2023, 30 January 2024 and 23 February 2024. No sediment, bleaching or increased mortality in the general condition of all other tagged coral colonies were observed during the monthly operation phase monitoring period. No deterioration of the coral community was observed in the ecological monitoring results when compared with the baseline ecological monitoring results. There is no AL/LL exceedance during the monitoring period.

A14.  Pre-operation phase fishery monitoring for dry season was carried out on 17 and 24 February 2024. The result is of the monitoring would be present when it is available.

A15. Weekly site inspections of the construction works were also carried out by ET to audit the mitigation measures implementation status. Thirteen (13) times of weekly Joint site inspections were carried out by ET and IEC.

A16. A summary of the EM&A activities in this reporting period is listed in Table I and summary of the environmental exceedance of the reporting period is tabulated in Table II.

Table I                 Summary Table for EM&A Activities in the Reporting Period

EM&A Activities

Dec 2023

Jan 2024

Feb 2024

Noise Monitoring

N/A

N/A

N/A

Pre-operation Phase

Water Quality Monitoring

12, 14, 16, 19, 21, 23,

26, 28 and 20

December 2023

2, 4, 6, 9, 11, 13, 16,

18, 20, 23, 25, 27 and

30 January 2024

1, 3, 5, 7, 9, 12, 15, 17,

20, 22, 24, 27 and 29

February 2024

TRC Monitoring for Main Disinfection

2 and 3 December

2023

N/A

N/A

Pre-operation Phase Coral Monitoring

28 December 2023

30 January 2024

23 February 2024

 

Pre-operation Phase Fishery Monitoring

N/A

N/A

17 and 24 February

2024

 

Landfill Gas monitoring

1, 2, 4, 5, 6, 7, 8, 9, 10,

11, 12, 13, 14, 15, 16,

18, 19, 20, 21, 22, 23,

27,        28        and        29

December 2023

2, 8, 9, 10, 11 and 12

January 2024

1, 2, 3, 5, 6, 7, 8, 9, 14,

15, 16, 17, 19, 20, 21,

22, 23, 24, 26, 27, 28

and 29 February 2024

Environmental Site Inspection

5, 12, 19, 27 December

2023

2, 9, 16, 25 and 29

January 2024

7, 16, 20 and 28

February 2024

Table II               Summary Table for Exceedance in the Reporting Period

 

Environmental Monitoring

 

 

Parameter

No. of non- Project related

exceedance

Total No. of non-Project related exceedance

No. of Project related

exceedance

Total No. of Project related exceedance

AL

LL

AL

LL

Noise

Leq (30min)

N/A

N/A

N/A

N/A

N/A

N/A

 

 

 

Water

DO

0

0

0

0

0

0

Turbidity

0

0

0

0

0

0

SS

78

59

137

0

0

0

pH

0

0

0

0

0

0

Salinity

0

0

0

0

0

0

TRC

0

0

0

0

0

0

Water (Main Disinfection)

TRC

0

0

0

0

0

0

 

Landfill Gas

O2

0

0

0

0

0

0

CH4

0

0

0

0

0

0

CO2

0

0

0

0

0

0

Complaint Handling and Prosecution

 

A17. One (1) environmental complaint was received during the reporting period. No notifications of summons or prosecution was received during the reporting period.

Reporting Change

 

A18.     There was no change to be reported that may affect the on-going EM&A programme.

 

 

 

 

 

 

 Basic Project Information

 

1.1.     Background

The Acciona Agua, S.A. Trading, Jardine Engineering Corporation Limited and China State Construction Engineering (Hong Kong) Limited and as AJC Joint Venture (AJCJV) is contracted to carry out the Design, Build and Operate First Stage of Tseung Kwan O Desalination Plant (DPTKO) under Contract No. 13/WSD/17 (the Contract).

Acuity Sustainability Consulting Limited (ASCL) is commissioned by AJCJV to undertake the Environmental Team (ET) services as required and/or implied, both explicitly and implicitly, in the Environmental Permit (EP), Environmental Impact Assessment Report (EIA Report) (Register No. AEIAR-192/2015) and Environmental Monitoring and Audit Manual (EM&A Manual) for the Contract; and to carry out the Environmental Monitoring and Audit (EM&A) programme in fulfillment of the EIA Report’s EM&A requirements and Contract No. 13/WSD/17 Specification requirements.

Pursuant to the Environmental Impact Assessment Ordinance (EIAO), the Director of Environmental Protection granted the Environmental Permit (No. EP-01/503/2015) and Variation of Environmental Permit (No. EP-01/503/2015/A) to Water Supplies Department (WSD); and granted the Further Environmental Permit (No. FEP-01/503/2015/A) to AJCJV for the Contract.

1.2.     The Reporting Scope

This is the 16th Quarterly EM&A Report for the Project which summarizes the key findings of the EM&A programme during the reporting period from 1 December 2023 to 29 February 2024.

 

1.3.     Project Organization

The Project Organization structure for Construction Phase is presented in Figure 1.1.

 


Figure 1.1         Project Organization Chart

Contact details of the key personnel are presented in Table 1.1 below:

Table 1.1           Contact Details of Key Personnel

 

Party

Position

Name

Telephone no.

Remark

Project Proponent

SE/CM2

Milton Law

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

 

/

Environmental Monitoring Manager

 

Joy Chan

 

6468-1782

 

/

Acuity Sustainability Consulting Limited

Environmental Team Leader

Jacky Leung

2698-6833

/

 

ANewR Consulting Limited

Independent Environmental Checker (IEC)

 

Alex Chan

 

2618-2831

(Until the end of January 2024)

Lam Environmental Services Limited

Independent Environmental Checker (IEC)

 

Serena Shek

 

6149-6683

(Started from February 2024)

 

1.4.     Summary of Construction Works

Details of the major construction activities undertaken in this reporting period are shown as below. The construction programme is presented in Appendix A.

 

Administration Building

-            Carrying out the floor tiles works at G/F

-            External wall painting works

-            Construction of block work for pipe duct

-            Installation of building services, cable laying, electrical switchboard, testing and commissioning

 

Chemical building

-            Installation of leakage collection pit cover

-            Underground utility construction work

-            Landscape work at roof

-            Defect rectification

Main Electrical & Central Chiller Plant Building

-            Installation of chillers, building services, electrical switchboard and cable laying

-            Installation of Roof Tile for Fuel Tank Room

ActiDAFF

-            Underground utility construction work

-            Installation of access opening cover

-            Construction of staircase no 2

-            Installation of mechanical equipment, piping system, installation of building services, electrical switchboards and cable laying, fiber-reinforced plastic cover Installation

Product Water Storage Tank Building

-            Installation of Cat Ladders in Water Tank A

-            Sealing slab opening in water Tank A

-            Re-construction of Wall PW8 in Water Tank A

-            Installation of metal cladding, building services, cable laying, mechanical equipment, steel pipe

-            Underground utility construction

OSCG Building

-             Protective Coating for dangerous goods Rooms

-             Placing Soil Mix at Roof

-             Installation of Metal Cladding (at East Side) and Roller Shutters and Window

-            Underground utility construction work

-            Installation of building services, mechanical equipment and cable laying, testing and commissioning

Reverse Osmosis Building

-           Installation of building services, electrical switchboard, cable laying, Installation of mechanical equipment, steel pipe, Glass Reinforced Plastic pipe, raised floor, testing and commissioning

-           Installation of metal cladding, handrailing, roller shutters, glass canopy and glass house

-           Underground utility construction work

-           Construction of Reinforced Concrete External Wall for Male Toilet

 

Post Treatment Building

-           Installation of building services, Installation of mechanical equipment and piping system, Pressure Test

-           Underground utility construction work

-           Installation of Cat Ladders in Water Tanks

-           Installation of Metal Cladding

-           Placing Soil Mix at Roof

Inspection corridor

-            Installation of building services, Lift installation

-            Construction of roof tiling works and staircases no. 2

-            Installation of Movement Joints and glass window

CO2 Tanks

-          Installation of pipes and electrical wiring, testing and commissioning Combined Shaft and Pump room

-             Finishing, Grating; window; louvre installation Other

-            Watermain works at CLP 132 kV Substation

-             Staircases construction; Steel Bridge assembly and installation at elevated walkway

-             Road Construction, Footpath Construction, Landscape Construction, Irrigation System Construction, Water Pressure Test for Fire Services and Plumbing System in Zone A, B, C

-             Structure Construction, steel fence erection of Wave Deflector Wall at seawall area

-             Slope work

 

 

1.5.     Summary of Environmental Status

A summary of the valid permits, licences, and /or notifications on environmental protection for this Project is presented in Table 1.2.

Table 1.2           Summary of the Status of Valid Environmental Licence, Notification, Permit and Documentations

 

 

Permit/ Licences

Valid Period

 

Status

 

Remark

From

To

Environmental Permit

EP - 503/2015/A

Throughout the Contract

Valid

-

FEP - 01/503/2015/A

Throughout the Contract

Valid

-

Notification of Construction Works under the Air Pollution Control (Construction Dust) Regulation (Form NA)

451539

Throughout the Contract

Valid

-

Billing Account for Disposal of Construction Waste

7036276

Throughout the Contract

Valid

-

Chemical Waste Producer Registration

5213-839-A2987-01

Throughout the Contract

Valid

-

Wastewater Discharge Licence (Land and Marine works)

WT00035775-2020

23/08/2021

31/07/2025

Valid

-

WT00044188-2023

16/06/2023

30/06/2025

Valid

-

Construction Noise Permit

GW-RE0640-23

22/06/2023

21/12/2023

Valid

-

GW-RE1514-23

22/12/2023

21/06/2024

Valid

-

The status for all environmental aspects is presented in Table 1.3

Table 1.3    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 and 6 June 2020

Construction Phase Impact Monitoring

Ceased from 1 September 2023

Pre-operation Phase Impact Monitoring

On-going

TRC Monitoring for Main Disinfection

Completed

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

Completed

Waste Management

Mitigation Measures in Waste Management Plan

On-going

Landfill Gas

Regular            Monitoring            when Construction Works are within the 250m Consultation Zone

In this reporting period, 216 times of landfill gas monitoring were recorded at Wan Po Road (Ch0+390 -  Ch0+780)  and  (Ch0+400  -  Ch1+200).  No

exceedance of action or limit level for methane, oxygen and carbon dioxide was observed

Ecology (Coral)

Pre-operation phase Regular Coral Monitoring (Monthly)

On-going

Ecology (Fishery)

Pre-operation        phase         Regular Fishery Monitoring (Seasonally)

On-going

Ecology (Landscape)

Pre-operation phase Landscape and

Visual Site Inspection

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 and pre-operation phase of the Project during the reporting period is provided in Appendix C.

 

 

 

 

 

 

 Noise

 

2.1.     Monitoring Requirements

To ensure no adverse noise impact, construction 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.

No impact construction noise monitoring was conducted in the reporting period due to the overly distant monitoring station from the works location, where they were farther than 1 km from the closet monitoring station NSR4 to the works location.

2.2.     Monitoring Parameters, Frequency and Duration

Construction noise level would be 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 2.1 summarizes the monitoring parameters, frequency and duration of the impact noise monitoring.

Table 2.1           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

 

2.3.     Monitoring Locations

The monitoring locations should normally be 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) should be 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 2.2 below.

Table 2.2           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

The monitoring locations should normally be 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) should be made to the free-field measurements. Three noise monitoring locations for impact monitoring at the nearby sensitive receivers are shown in Figure 2.1-2.3.

 

 

Figure 2.1 NSR4 Creative Secondary School

 

Figure 2.2 NSR24 PLK Laws Foundation College

 

 

Figure 2.3 NSR31 School of Continuing and Professional Studies - CUHK

 

 

2.4.     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 Construction Noise Monitoring per EM&A Manual

 

Time Period

Action Level

Limit Level (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.

2.5.     Monitoring Results and Observations

 

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


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

 

 

 

 

 

 

 WATER QUALITY

 

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

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. The water quality monitoring programme was carried out to allow any deteriorating water quality to be readily detected and timely action taken to rectify the situation.

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

-                      Dredging activities during construction phase;

-                      Discharge of effluent from main disinfection during construction phase;

-                      Commissioning activities during pre-operation (testing and commissioning) phase

-                      Operation phase - first year upon operation; and,

-                      Continuous monitoring of effluent quality.

 

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 measured in the impact 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

mg/L

TRC

Total Residual Chlorine (Disinfection)

mg/L

TRC

Laboratory measurements

Suspended Solids

mg/L

SS

Iron

mg/L

 

Anti-scalant

mg/L

-

NOTE 1: Monitoring of Total Residual Chlorine (Disinfection) 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 were 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 Locations

Pre-operation (testing and commissioning) Phase

The impact water quality monitoring locations are detailed in Table 3.2 and shown in Figure 3.1

below.

Table 3.2           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

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

 

Figure 3.1          Impact Water Quality Monitoring Locations under EM&A Manual

 

Main Disinfection

According to the approved Flushing and Disinfection Procedure and Supplementary of the Disinfection Procedure for Desalination Plant at Tseung Kwan O, the sampling point of the dechlorinated effluent was located at Contact tank/Product Water Tank (PWT) and T1GKC01AA502/manhole 18.

The approved sampling location was shown in Table 3.3, Figure 3.2 and Figure 3.3 below.

Table 3.3           Sampling location of dechlorinated effluent

System/Loop

Discharge

location

Sampling Location

Parameter

Contact tank/

Product Water Tank (PWT)

 

Culvert

 

Contact tank/PWT

 

 

 

TRC

Connection to dist. network

Manhole 18 in

connection point

Sampling point

T1GKC01AA502/manhole 18

 

 

Figure 3.2         Impact water quality monitoring point for dechlorinated effluent (Contact tank/PWT)


 

Figure 3.3         Impact water quality monitoring point for dechlorinated effluent (Sampling point T1GKC01AA502/manhole 18)

3.3.     Monitoring Equipment, Methodology and QA/QC Procedures

The monitoring methodology, equipment used, and QA/QC procedures could be referred to Section 3.1.2 -3.1.4, 3.1.6-3.1.7 and 3.2 of the Monthly EM&A Report.

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 and 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

Pre-Operation (Testing and Commissioning) 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

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 mg/L

0.3 mg/L

Total        residual

chlorine in mg/L

0.01 mg/L

0.01 mg/L

Total        residual

chlorine in mg/L (Disinfection)

0.1 mg/L

0.1 mg/L

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.

3.5.     Monitoring Results and Observations

Construction Phase

Referring to EM&A Manual, the general water quality monitoring should be carried out when there are marine-related construction activities undertaken. General water quality monitoring at the ten monitoring stations (CE, CF, WSR1, WSR2, WSR3, WSR4, WSR16, WSR33, WSR36 and WSR37) was ceased from 1 September 2023 due to the completion of marine-related construction works.

Pre-operation (testing and commissioning) Phase

Considering the first pre-operation phase of Tseung Kwan O Desalination Plant was started in the reporting period, additional marine water quality monitoring was conducted at the thirteen monitoring stations (CE, CF, WSR1, WSR2, WSR3, WSR4, WSR16, WSR33, WSR36, WSR37, NF1,

NF2 and NF3) from 12 December 2023. The Action and Limit Level would be referred to the approved EM&A Manual Table 5.4 First-year Operation Phase Marine Water Monitoring.

The additional marine water quality monitoring was conducted at the thirteen monitoring stations on 12, 14, 16, 19, 21, 23, 26, 28 and 20 December 2023, 2, 4, 6, 9, 11, 13, 16, 18, 20, 23, 25, 27 and 30 January 2024 and 1, 3, 5, 7, 9, 12, 15, 17, 20, 22, 24, 27 and 29 February 2024 during the reporting quarter. The result of the reporting quarterly is presented in Table 3.5.

Seventy-eight (78) of the pre-operation phase water quality monitoring results of SS obtained had exceeded the Action Level. Fifty-nine (59) of the pre-operation phase water quality monitoring results of SS obtained during the reporting period had exceeded the Limit Level.

Investigation on the reason of exceedance has been carried out, where the exceedances of SS were concluded to be unrelated to the Contract as detailed in the Incident Reports on Action Level or Limit Level. Summary of the exceedance is presented in Appendix E.

 

 

Table 3.5           Summary of Impact Water Quality Monitoring Results

 

 

 

 

Location

Parameter

 

 

Salinity (ppt)

Dissolved Oxygen (mg/L)

 

 

pH

 

 

Turbidity (NTU)

 

Suspended Solids (mg/L)

 

 

Temp. (oC)

 

 

TRC (mg/L)

 

 

Iron (mg/L)

 

Surface & Middle

 

Bottom

Dec

Jan

Feb

Dec

Jan

Feb

Dec

Jan

Feb

Dec

Jan

Feb

Dec

Jan

Feb

Dec

Jan

Feb

Dec

Jan

Feb

Dec

Jan

Feb

Dec

Jan

Feb

 

CE

Avg.

33.1

32.9

33.5

9.1

9.1

8.5

9.0

9.1

8.5

7.2

7.3

7.6

3.0

2.4

2.4

3.9

4.0

3.3

21.8

23.3

21.9

<0.01

<0.01

<0.01

<0.1

<0.1

<0.1

Min.

32.1

32.2

32.6

7.4

8.5

7.7

7.4

8.4

7.7

6.6

7.1

7.2

2.2

1.7

2.0

3.0

2.5

2.5

21.0

21.7

20.1

<0.01

<0.01

<0.01

<0.1

<0.1

<0.1

Max..

34.5

33.8

34.2

10.1

9.5

9.3

10.1

9.5

9.4

7.6

7.4

8.0

3.8

3.2

2.7

6.0

7.0

8.0

22.4

24.4

23.1

<0.01

<0.01

<0.01

<0.1

<0.1

<0.1

 

CF

Avg.

33.0

32.7

33.2

9.2

9.1

8.5

9.2

9.1

8.6

7.1

7.3

7.6

3.2

2.4

2.6

3.8

3.9

3.2

21.9

23.3

21.9

<0.01

<0.01

<0.01

<0.1

<0.1

<0.1

Min.

32.3

31.8

32.7

7.9

8.7

7.8

7.8

8.7

7.8

6.6

7.1

7.1

2.5

1.8

2.1

2.5

2.5

2.5

20.9

21.9

20.1

<0.01

<0.01

<0.01

<0.1

<0.1

<0.1

Max..

34.2

33.9

34.0

10.0

9.8

9.2

10.1

9.8

9.1

7.4

7.4

8.0

4.0

3.0

3.1

7.0

7.0

9.0

22.6

24.4

23.4

<0.01

<0.01

<0.01

<0.1

<0.1

<0.1

 

WSR1

Avg.

33.2

32.8

33.2

9.0

8.9

8.4

9.1

8.9

8.4

7.2

7.3

7.6

2.2

2.0

1.9

4.0

4.1

3.4

21.9

23.3

21.9

<0.01

<0.01

<0.01

<0.1

<0.1

<0.1

Min.

32.3

31.4

32.4

7.8

8.3

7.9

7.9

8.2

7.9

6.6

7.1

7.1

1.7

1.5

1.4

2.5

2.5

2.5

21.2

21.6

20.1

<0.01

<0.01

<0.01

<0.1

<0.1

<0.1

Max..

34.4

34.0

34.0

10.3

9.4

9.2

10.3

9.4

9.2

7.4

7.4

7.9

2.5

2.3

2.4

6.0

9.0

10.0

22.8

24.4

23.4

<0.01

<0.01

<0.01

<0.1

<0.1

<0.1

 

WSR2

Avg.

33.0

32.8

33.0

9.0

8.9

8.5

8.9

8.9

8.5

7.5

7.3

7.6

2.2

2.0

1.9

3.8

4.0

2.9

23.7

23.3

21.9

<0.01

<0.01

<0.01

<0.1

<0.1

<0.1

Min.

32.1

31.7

32.3

7.7

8.4

7.5

7.6

8.4

7.6

6.7

7.1

7.2

1.4

1.5

1.3

2.5

2.5

2.5

21.1

21.7

20.0

<0.01

<0.01

<0.01

<0.1

<0.1

<0.1

Max..

33.7

34.0

33.9

9.9

9.6

9.3

9.9

9.6

9.2

8.4

7.4

8.0

2.6

2.4

2.4

8.0

9.0

7.0

28.0

24.3

23.2

<0.01

<0.01

<0.01

<0.1

<0.1

<0.1

 

WSR3

Avg.

33.1

32.9

33.2

9.2

8.9

8.5

9.3

8.9

8.5

7.2

7.3

7.6

2.1

1.9

2.0

4.1

3.9

3.4

21.9

23.4

22.0

<0.01

<0.01

<0.01

<0.1

<0.1

<0.1

Min.

32.5

31.9

32.3

7.8

8.4

7.9

7.9

8.4

7.9

6.7

7.1

7.1

1.2

1.5

1.6

2.5

2.5

2.5

21.1

22.0

20.0

<0.01

<0.01

<0.01

<0.1

<0.1

<0.1

Max..

33.5

33.8

34.0

10.1

9.5

9.2

10.1

9.6

9.2

7.4

7.4

8.0

2.6

2.3

2.3

7.0

7.0

13.0

22.6

24.4

23.2

<0.01

<0.01

<0.01

<0.1

<0.1

<0.1

 

WSR4

Avg.

33.1

33.0

33.3

9.1

9.1

8.5

9.0

9.1

8.5

7.1

7.2

7.6

2.0

2.0

2.0

4.0

3.7

3.5

22.0

23.3

22.0

<0.01

<0.01

<0.01

<0.1

<0.1

<0.1

Min.

32.4

31.7

32.2

7.3

8.4

7.5

7.3

8.4

7.5

6.6

7.1

7.1

1.2

1.5

1.5

2.5

2.5

2.5

21.2

21.8

20.0

<0.01

<0.01

<0.01

<0.1

<0.1

<0.1

Max..

34.2

33.7

34.2

10.5

9.9

9.0

10.4

9.9

9.1

7.5

7.4

7.9

2.5

2.4

2.3

7.0

6.0

14.0

22.8

24.3

23.2

<0.01

<0.01

<0.01

<0.1

<0.1

<0.1

 

WSR16

Avg.

33.1

32.6

33.3

9.1

9.0

8.5

9.2

9.0

8.5

7.1

7.3

7.6

2.1

2.0

1.9

4.3

3.8

3.2

22.0

23.3

22.0

<0.01

<0.01

<0.01

<0.1

<0.1

<0.1

Min.

32.3

31.6

32.7

8.4

8.0

7.9

8.4

8.0

7.9

6.6

7.1

7.2

1.1

1.6

1.1

2.5

2.5

2.5

21.1

21.8

20.3

<0.01

<0.01

<0.01

<0.1

<0.1

<0.1

Max..

34.2

33.5

34.1

10.4

9.6

9.0

10.4

9.7

9.0

7.4

7.4

8.0

2.8

2.3

2.3

10.0

7.0

6.0

22.7

24.3

23.2

<0.01

<0.01

<0.01

<0.1

<0.1

<0.1

 

WSR33

Avg.

33.1

32.8

33.4

9.0

8.9

8.5

8.9

8.9

8.5

7.2

7.3

7.6

2.2

2.1

1.9

3.9

4.0

3.1

22.0

23.3

21.9

<0.01

<0.01

<0.01

<0.1

<0.1

<0.1

Min.

32.3

32.0

32.2

8.2

8.4

7.4

8.2

8.4

7.5

6.8

7.2

7.1

1.9

1.7

1.3

2.5

2.5

2.5

21.2

21.8

20.1

<0.01

<0.01

<0.01

<0.1

<0.1

<0.1

Max..

33.7

33.6

34.0

10.1

9.7

9.5

10.1

9.7

9.5

7.4

7.4

7.9

2.8

2.4

2.3

7.0

10.0

6.0

22.7

24.4

23.3

<0.01

<0.01

<0.01

<0.1

<0.1

<0.1

 

WSR36

Avg.

33.5

32.8

33.3

9.2

9.0

8.5

9.2

9.1

8.5

7.2

7.3

7.6

2.4

2.0

2.0

4.1

4.0

3.0

21.9

23.3

21.9

<0.01

<0.01

<0.01

<0.1

<0.1

<0.1

Min.

32.7

31.7

32.7

8.2

8.3

7.6

8.2

8.3

7.6

6.7

7.1

7.1

2.1

1.5

1.3

2.5

2.5

2.5

21.1

21.6

20.1

<0.01

<0.01

<0.01

<0.1

<0.1

<0.1

Max..

34.6

34.1

34.0

10.3

9.8

9.3

10.5

9.8

9.3

7.5

7.4

8.1

2.6

2.4

2.4

8.0

8.0

5.0

22.6

24.5

23.1

<0.01

<0.01

<0.01

<0.1

<0.1

<0.1

 

WSR37

Avg.

33.0

32.9

33.4

9.0

9.2

8.3

9.0

9.1

8.3

7.5

7.3

7.6

2.2

2.2

2.0

4.1

4.1

3.3

23.7

23.3

22.0

<0.01

<0.01

<0.01

<0.1

<0.1

<0.1

Min.

31.8

32.1

32.4

7.5

8.4

7.6

7.5

8.5

7.6

6.7

7.1

7.1

1.8

1.6

1.5

2.5

2.5

2.5

21.1

21.5

20.2

<0.01

<0.01

<0.01

<0.1

<0.1

<0.1

Max..

33.8

33.6

34.2

10.3

9.9

9.0

10.2

9.9

9.1

8.4

7.4

8.0

2.5

2.4

2.4

9.0

9.0

7.0

28.0

24.6

23.3

<0.01

<0.01

<0.01

<0.1

<0.1

<0.1

 

 

 

 

Location

Parameter

 

 

Salinity (ppt)

Dissolved Oxygen (mg/L)

 

 

pH

 

 

Turbidity (NTU)

 

Suspended Solids (mg/L)

 

 

Temp. (oC)

 

 

TRC (mg/L)

 

 

Iron (mg/L)

 

Surface & Middle

 

Bottom

Dec

Jan

Feb

Dec

Jan

Feb

Dec

Jan

Feb

Dec

Jan

Feb

Dec

Jan

Feb

Dec

Jan

Feb

Dec

Jan

Feb

Dec

Jan

Feb

Dec

Jan

Feb

 

NF1

Avg.

33.1

33.1

33.2

9.0

9.0

8.3

9.0

9.0

8.3

7.2

7.2

7.6

2.2

1.9

2.0

4.1

3.7

3.4

21.9

23.3

21.9

<0.01

<0.01

<0.01

<0.1

<0.1

<0.1

Min.

32.5

32.3

32.5

8.2

8.2

7.9

8.2

8.2

7.8

6.7

7.1

7.1

1.6

1.5

1.5

2.5

2.5

2.5

20.9

21.8

20.2

<0.01

<0.01

<0.01

<0.1

<0.1

<0.1

Max..

33.6

34.3

34.2

9.8

9.6

8.9

10.1

9.6

8.9

7.4

7.5

8.0

2.5

2.4

2.4

8.0

6.0

9.0

22.8

24.4

23.1

<0.01

<0.01

<0.01

<0.1

<0.1

<0.1

 

NF2

Avg.

32.9

33.0

33.3

9.0

8.7

8.3

9.0

8.7

8.3

7.1

7.3

7.6

2.0

1.9

2.0

4.0

3.9

3.1

21.8

23.3

21.9

<0.01

<0.01

<0.01

<0.1

<0.1

<0.1

Min.

32.3

32.1

32.3

7.4

8.4

7.4

7.4

8.4

7.4

6.5

7.1

7.1

1.3

1.7

1.5

2.5

2.5

2.5

20.9

21.6

19.9

<0.01

<0.01

<0.01

<0.1

<0.1

<0.1

Max..

33.5

33.8

33.9

10.1

9.2

9.1

10.1

9.2

9.0

7.4

7.5

7.9

2.6

2.2

2.4

7.0

7.0

7.0

22.6

24.4

23.2

<0.01

<0.01

<0.01

<0.1

<0.1

<0.1

 

NF3

Avg.

33.0

32.9

33.0

9.0

8.9

8.4

8.8

8.9

8.4

7.2

7.2

7.6

2.1

2.0

2.0

4.1

3.7

3.4

21.9

23.3

21.9

<0.01

<0.01

<0.01

<0.1

<0.1

<0.1

Min.

32.3

31.8

32.3

7.6

8.3

7.6

7.6

8.3

7.5

6.6

7.1

7.1

1.3

1.5

1.4

2.5

2.5

2.5

20.9

21.7

20.0

<0.01

<0.01

<0.01

<0.1

<0.1

<0.1

Max..

34.0

33.6

33.9

10.1

9.6

9.6

10.0

9.4

9.6

7.5

7.4

8.0

2.6

2.3

2.4

8.0

8.0

7.0

22.8

24.3

23.1

<0.01

<0.01

<0.01

<0.1

<0.1

<0.1

 

Main Disinfection

Dechlorinated effluent monitoring at sampling locations (T1GKC01AA502/manhole 18) during discharge was carried out by AJCJV on 2 & 3 December 2023 for Total Residual Chlorine monitoring (TRC). Seven (7) of dechlorinated effluent sample were taken in T1GKC01AA502/manhole 18.

No TRC exceedance of action or limit levels was obtained during the discharge of dechlorinated effluent. The dechlorinated effluent monitoring is completed.

Monitoring results of TRC in this reporting month summarized in Table 3.6.

 Table 3.6          Summary of dechlorinated effluent Monitoring Results

Location

Contact Tank / Product Water Tank flushing after neutralization

Date

02 Dec

2023

03 Dec

2023

03 Dec

2023

03 Dec

2023

03 Dec

2023

03 Dec

2023

03 Dec

2023

Time

23:59

01:00

02:00

03:00

04:00

05:00

06:00

TRC

(mg/L)

0.04

0.04

0.03

0.02

0.01

0.00

0.01

 

 

 

 

 

 

 Waste

 

The waste generated from this Project includes inert construction and demolition (C&D) materials, and non-inert C&D materials. Non-inert C&D materials are made up of general refuse, vegetative wastes, and recyclable wastes such as plastics and paper/cardboard packaging waste. Steel materials generated from the project are also grouped into non-inert C&D materials as the materials were not disposed of with other inert C&D materials. With reference to relevant handling records and trip tickets of this Project, the quantities of different types of waste generated in the reporting period are summarized in Table 4.1. Details of cumulative waste management data are presented as a waste flow table in Appendix F.

Table 4.1    Quantities of Waste Generated from the Project during reporting period

 

 

 

 

 

 

Reporting Months

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 (1)

 

 

Chemical Waste

 

 

Others, e.g. general refuse

(in ,000kg)

(in ,000kg)

(in ,000kg)

(in ,000kg)

(in ,000kg)

(in ,000kg)

(in ,000kg)

(in ,000kg)

(in ,000kg)

(in ,000kg)

(in ,000kg)

December 2023

215.229

0.000

0.000

0.000

215.220

0.000

0.000

0.000

0.000

0.000

79.680

January 2024

4978.345

0.000

0.000

4667.745

310.600

0.000

0.000

0.000

0.000

0.000

77.800

February 2024

*22448.146

0.000

0.000

21883.006

*565.14

0.000

0.000

0.000

0.000

0.000

*39.58

Notes:                  (1) Plastics refer to plastic bottles / containers, plastic sheets / foam from packaging material

(*) The record in EPD Transaction Records system was up to 22/02/2024, the data from 23/02 to 29/02 will be updated in next reporting period.

 

 

 

 

 

 

 LANDFILL GAS MONITORING

 

5.1.     Monitoring Requirement

In accordance with Section 11 of the EM&A Manual, monitoring of landfill gas is required for construction works within the 250m Consultation Zone. Part of the desalination plant and the indicative area of natural slope mitigation works fall within the SENT Landfill Extension Consultation Zone; and part of the 1,200 mm diameter fresh water mains along Wan Po Road falls within the SENT Landfill and SENT Landfill Extension Consultation Zones, TKO Stage II/III Restored Landfill and TKO Stage I Restored Landfill Consultation Zones.

 

5.2.     Monitoring Location

Monitoring of oxygen, methane, carbon dioxide and barometric pressure was performed for excavations at 1m depth or more within the consultation Zone.

During construction of works within the consultation zones, excavations of 1m depth or more was monitored:

-             At the ground surface before excavation commences;

-             Immediately before any worker enters the excavation;

-            At the beginning of each working day for the entire period the excavation remains open; and

-             Periodically through the working day whilst workers are in the excavation.

 

For excavations between 300mm and 1m deep, measurements should be carried out:

 

-             Directly after the excavation has been completed; and

-             Periodically whilst the excavation remains open.

 

5.3.     Monitoring Parameters

LFG monitoring was carried out to identify any migration between the landfill and the Project and to ensure the safety of the construction, operation and maintenance personnel working on- site, visitors and any other person within the Project area.

 

The following parameters were monitored:

-                      Methane.

-                      Oxygen.

-                      Carbon Dioxide.

-                      Barometric Pressure.

5.4.     Monitoring Location

The area required to be monitored for landfill gas in the reporting period is shown in Figure 5.1.


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

 

5.5.           Action and Limit Level

Action and Limit Level are provided in Table 5.1.

Table 5.1             Action and Limit Level for Landfill Gas Monitoring

Parameters

Action Level

Limit Level

Oxygen (O2)

<19% O2

<19% O2

Methane (CH4)

>10% LEL

>20% LEL

Carbon Dioxide (CO2)

>0.5% CO2

>1.5% CO2

 

5.6.            Monitoring Equipment

The monitoring equipment used in the reporting period could be referring to Section 5.10 - 5.11 of the Monthly EM&A Report.

 

5.7.           Monitoring Results and Observations

In this reporting period, 216 times of landfill gas monitoring were recorded at Wan Po Road (Ch0+390 - Ch0+780) and (Ch0+400 - Ch1+200). No exceedance of action and limit levels for methane, oxygen and carbon dioxide was observed. Monitoring was conducted during

excavations at 1m depth or more within the consultation zone and whenever workers entered the excavation on the day. The Location Map for Landfill Gas Monitoring at TKO Area 137 are shown in Figure 5.2 and 5.3.


Figure 5.2   Location Map for Landfill Gas Monitoring at TKO Area 137 (-0+440 - -0+760)

 

 

Figure 5.3 Location Map for Landfill Gas Monitoring at TKO Area 137 (-0+740 - -1+060)

 

 

 

 

 

 

 

 SUMMARY  OF  EXCEEDANCE, COMPLAINT, NOTIFICATION  OF  SUMMONS  AND Prosecutions

 

The Environmental Complaint Handling Procedure is shown in below Figure 6.1:


 

                                                Figure 6.1         Environmental Complaint Handling Procedures

No 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.

Referring to EM&A Manual, the general water quality monitoring should be carried out when there are marine-related construction activities undertaken. General water quality monitoring at the ten monitoring stations (CE, CF, WSR1, WSR2, WSR3, WSR4, WSR16, WSR33, WSR36 and WSR37) was ceased from 1 September 2023 due to the completion of marine-related construction works.

The EM&A works for pre-operation phase water quality were conducted during the reporting period in accordance with the EM&A Manual

Seventy-eight (78) of the pre-operation phase water quality monitoring results of SS obtained had exceeded the Action Level. Fifty-nine (59) of the pre-operation phase water quality monitoring results of SS obtained during the reporting period had exceeded the Limit Level. After investigation, all exceedances were considered non-project related.

Dechlorinated effluent monitoring at sampling locations (T1GKC01AA502/manhole 18) during discharge was carried out by AJCJV on 2 & 3 December 2023 for Total Residual Chlorine monitoring (TRC). Seven (7) of dechlorinated effluent sample were taken in T1GKC01AA502/manhole 18. No TRC exceedance was recorded in the reporting period. The dechlorinated effluent monitoring is completed.

In this reporting period, 216 times of landfill gas monitoring were recorded at Wan Po Road (Ch0+390 - Ch0+780) and (Ch0+400 - Ch1+200). No exceedance of action and limit levels for methane, oxygen and carbon dioxide was observed. Monitoring was conducted during excavations at 1m depth or more within the consultation zone and whenever workers entered the excavation on the day.

Pre-operation phase monthly coral monitoring was conducted during the reporting period on 28 December 2023, 30 January 2024 and 23 February 2024. No sediment, bleaching or increased mortality in the general condition of all other tagged coral colonies were observed during the monthly operation phase monitoring period. No deterioration of the coral community was observed in the ecological monitoring results when compared with the baseline ecological monitoring results. There is no AL/LL exceedance during the monitoring period.

Pre-operation phase fishery monitoring for dry season was carried out on 17 and 24 February 2024. The result is of the monitoring would be present when it is available.

ET will keep closely monitoring the performance of Contractor, implementation of water quality mitigation measure and other contamination issue around the Project site, to ensure the EM&A requirement is properly implemented.

One (1) environmental complaint was received in the reporting period. No notification of summons and prosecution was received in the reporting period. The details of the complaint could be referred to Appendix J of the Monthly EM&A Report for Jan 24

Statistics on complaints and regulatory compliance are summarized in Appendix G.

 

 

 

 

 

 

 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.

ET weekly site inspections were carried out by ET on 5, 12, 19 and 27 December 2023, 2, 9, 16, 25 and 29 January 2024 and 7, 16, 20 and 28 February 2024.

Joint site inspections were also carried out by ET and IEC on 12 and 27 December 2023, 09, 16, 25 and 29 January 2024, and 7, 16, 20 and 28 February 2024.

Minor deficiencies were observed during weekly site inspection. Key observations during the site inspections are summarized below:

-            A chemical container found near RO Building without a drip tray, the contractors are reminded to provide a drip tray or proper storage for the chemical containers.

The Contractor has rectified the observations identified during environmental site inspections in the reporting period.

According to the EIA Study Report, Environmental Permit, contract documents and EM&A Manual, the mitigation measures detailed in the documents should be implemented as much as practical during the reporting period. An updated Implementation Status of Environmental Mitigation Measures (EMIS) is provided in Appendix C.

 

 

 

 

 

 

 

 CONCLUSIONS AND RECOMMENDATIONS

 

This is the 16th Quarterly EM&A Report for the Project which summarizes the key findings of the EM&A programme during the reporting period from 1 December 2023 to 29 February 2024, 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.

Referring to EM&A Manual, the general water quality monitoring should be carried out when there are marine-related construction activities undertaken. General water quality monitoring at the ten monitoring stations (CE, CF, WSR1, WSR2, WSR3, WSR4, WSR16, WSR33, WSR36 and WSR37) was ceased from 1 September 2023 due to the completion of marine-related construction works.

The EM&A works for pre-operation phase water quality were conducted during the reporting period in accordance with the EM&A Manual Seventy-eight (78) of the pre-operation phase water quality monitoring results of SS obtained had exceeded the Action Level. Fifty-nine (59) of the pre-operation phase water quality monitoring results of SS obtained during the reporting period had exceeded the Limit Level. After investigation, all exceedances were considered non-project related.

Dechlorinated effluent monitoring at sampling locations (T1GKC01AA502/manhole 18) during discharge was carried out by AJCJV on 2 & 3 December 2023 for Total Residual Chlorine monitoring (TRC). Seven (7) of dechlorinated effluent sample were taken in T1GKC01AA502/manhole 18. No TRC exceedance was recorded in the reporting period. The dechlorinated effluent monitoring is completed.

In this reporting period, 216 times of landfill gas monitoring were recorded at Wan Po Road (Ch0+390 - Ch0+780) and (Ch0+400 - Ch1+200). No exceedance of action and limit levels for methane, oxygen and carbon dioxide was observed. Monitoring was conducted during excavations at 1m depth or more within the consultation zone and whenever workers entered the excavation on the day.

Pre-operation phase monthly coral monitoring was conducted during the reporting period on 28 December 2023, 30 January 2024 and 23 February 2024. No sediment, bleaching or increased mortality in the general condition of all other tagged coral colonies were observed during the monthly operation phase monitoring period. No deterioration of the coral community was observed in the ecological monitoring results when compared with the baseline ecological monitoring results. There is no AL/LL exceedance during the monitoring period.

Pre-operation phase fishery monitoring for dry season was carried out on 17 and 24 February 2024. The result is of the monitoring would be present when it is available.

Weekly environmental site inspection was conducted during the reporting period. Minor deficiency was observed during site inspection and was rectified. 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.

Two (2) environmental complaint was received of the Contract since commencement of the Contract. No notification of summons or prosecution was received of the Contract since commencement of the Contract quarter.

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

D

C

O

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

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

-

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 after reminder

-

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 after reminder

 

-

 

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

D

C

O

S4.8.1

Stockpiles of more than 20 bags of cement, dry pulverized 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

 

N/A

 

-

S4.8.1

All exposed areas will be kept wet always to minimize dust emission.

Land site/ During construction

Contractor(s)

 

ü

 

Implemented after reminder

-

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

-

S4.10

To ensure proper implementation of the recommended dust mitigation measures and good construction site practices during the construction phase, environmental site audits on weekly basis is recommended throughout the construction period.

Land site/ During construction

Contractor(s)/ Environmental Team (ET) & Independent Environmental Checker (IEC)

 

ü

 

Implemented

 

 

-

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 Construction Works

A Practical Guide for the Reduction of Noise from Construction Works

 

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

D

C

O

S5.7

Silencers or mufflers on construction equipment will be utilized and will be properly maintained during the construction phase.

Noise control/ During construction

Contractor(s)

 

ü

 

N/A

 

-

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 or will be throttled down to a minimum.

Noise control/ During construction

Contractor(s)

 

ü

 

Implemented

 

-

S5.7

Plants known to emit noise strongly in one direction will, wherever possible, be orientated so that the noise is directed away from the nearby NSRs.

Noise control/ During construction

Contractor(s)

 

ü

 

N/A

 

-

S5.7

Material stockpiles and other structures will be effectively utilized, wherever practicable, in screening noise from on-site construction activities.

Noise control/ During construction

Contractor(s)

 

ü

 

N/A

 

-

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 meters of stationary plant and mobile plant such that the line of sight 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.

Noise control/ During construction

Contractor(s)

 

ü

 

N/A

 

 

 

-

S5.7

The noise insulating sheet should be deployed such that there would be no opening or gaps on the joints.

Noise control/ During construction

Contractor(s)

 

ü

 

N/A

-

S5.7

Construction activities (e.g., excavation/shoring, reinstatement (asphalt), and pipe jacking) will be planned and carried out in sequence, such that items of PME proposed for these activities will not be operated simultaneously.

Noise control/ During construction

Contractor(s)

ü

ü

 

Implemented

 

-

S5.7

PMEs will not be used at the works areas near educational institutions with residual impact (i.e., 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

 

-

 

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

D

C

O

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

 

 

-

5.9

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 (eg 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

Environmental Team

 

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

-

Water Quality

S6.9

Dredged marine sediment will be disposed of in a gazette 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

 

-

 

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

D

C

O

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

 

S6.9

No soil waste is allowed to be disposed overboard.

Marine Dredging/ During construction

Contractor(s)

 

ü

 

N/A

 

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

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 summarised in Appendix A2 of ProPECC PN 1/94.

Land site & drainage/ During construction

Contractor(s)

ü

ü

 

Implemented

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

 

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

D

C

O

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

-

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 dechlorination 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 Inland and Coastal Waters

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

Implemented

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 after reminder

 

-

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

 

 

-

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

 

-

 

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

D

C

O

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

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

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

ETWB TC(W) No. 19/2005,

Environmental Management on Construction Sites

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

Chapters 2 & 3 Code of Practice on the Packaging, Labelling & Storage of Chemical Wastes published under the Waste Disposal Ordinance (Cap 354),

S8.5

Regular cleaning and maintenance programme for drainage systems, sumps and oil interceptors.

Land site/ During construction

Contractor(s)

 

ü

 

Implemented

Waste Disposal Ordinance (Cap 354)

S8.5

A recording system for the amount of waste 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 &

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

WBTC 32/92, The Use of Tropical Hard Wood on Construction Site

 

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

D

C

O

S8.5

Encourage collection of aluminium cans and wastepaper 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

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

Use of reusable non-timber formwork to reduce the amount of C&D materials.

All areas/ During construction

Contractor(s)

 

ü

 

Implemented

WBTC 32/92, The Use of Tropical Hard Wood on Construction Site

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

DEVB TC(W) No. 6/2010,

Trip Ticket System for

Disposal of Construction & Demolition Materials

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

-

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

 

-

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

ETWB TC(W) No. 34/2002

and Dumping at Sea Ordinance (DASO)

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 mobilization/ 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 mobilization/ During construction

Contractor(s)

 

ü

 

Implemented

DEVB TC(W) No. 6/2010,

Trip Ticket System for Disposal of Construction & Demolition Materials

 

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

D

C

O

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)/ Environmental Team (ET) & Independent Environmental Checker (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

-

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

 

-

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

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

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

 

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

D

C

O

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

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 after reminder

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 after reminder

 

-

S8.5

Recycling bins will be provided at strategic locations within the Site to facilitate recovery of recyclable materials (including aluminum can, waste paper, 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)

 

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

D

C

O

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

 

-

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)

ü

ü

 

Implemented

 

 

 

 

-

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)

 

ü

 

Implemented

 

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)

ü

ü

 

Implemented

 

 

 

-

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)

ü

 

 

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)

 

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

D

C

O

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

 

Implemented

 

-

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

 

Implemented

 

-

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

 

Implemented

 

-

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)/ ET

 

ü

 

Implemented after reminder

 

-

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

 

To be Implemented

 

 

-

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

 

To be Implemented

 

-

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

-

 

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

D

C

O

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 after reminder

 

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

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

 

 

 

-

 

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

D

C

O

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

 

-

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 meter.

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

 

-

 

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

D

C

O

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

 

 

-

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

 

 

-

 

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

D

C

O

S12.7

The manholes and utility pits within the Project Site and along the freshwater 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 and for each measurement. The need for venting the manhole/ utility pit and further monitoring will be reviewed after the initial monitoring.

All area/ Detailed design/ During construction/ During operation

Contractor(s)

ü

ü

ü

Implemented

 

 

 

 

-

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    Monitoring    Graphical Presentation

 

l   Appendix D.1 Weather Condition

l   Appendix D.2 Key Activities Carried Out During the Reporting Quarter

l   Appendix D.3 Other Factor Might Affect the Monitoring Results

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Appendix D.1

Weather Condition

 

 

 

 

 

 

 

 

 

 

 

 

 

Appendix D.2

Key   Activities   Carried   Out   During  the Reporting Quarter

 

November 2023

 

Administration Building

-            Carrying out the floor tiles works at G/F

-            External wall painting works

-            Construction of block work for pipe duct

-            Installation of building services, cable laying, electrical switchboard, testing and commissioning

Chemical building

-            Installation of leakage collection pit cover

-            Underground utility construction work

-            Landscape work at roof

-            Defect rectification

Main Electrical & Central Chiller Plant Building

-            Installation of chillers, building services, electrical switchboard and cable laying

-            Installation of Roof Tile for Fuel Tank Room

ActiDAFF

-            Underground utility construction work

-            Installation of access opening cover

-            Construction of staircase no 2

-            Installation of mechanical equipment, piping system, installation of building services, electrical switchboards and cable laying, fiber-reinforced plastic cover Installation

Product Water Storage Tank Building

-            Installation of Cat Ladders in Water Tank A

-            Sealing slab opening in water Tank A

-            Re-construction of Wall PW8 in Water Tank A

-            Installation of metal cladding, building services, cable laying, mechanical equipment, steel pipe

-            Underground utility construction

OSCG Building

-             Protective Coating for dangerous goods Rooms

-             Placing Soil Mix at Roof

-             Installation of Metal Cladding (at East Side)

-             Installation of Roller Shutters and Window

-            Underground utility construction work

-            Installation of building services, mechanical commissioning

 

 

 

 

 

 

 

 

equipment

 

 

 

 

 

 

 

 

and

 

 

 

 

 

 

 

 

cable

 

 

 

 

 

 

 

 

laying,

 

 

 

 

 

 

 

 

testing

 

 

 

 

 

 

 

 

and

Reverse Osmosis Building

-            Installation of building services, electrical switchboard, cable laying, Installation of mechanical equipment, steel pipe, GRP pipe, raised floor, testing and commissioning

-            Installation of metal cladding, handrailing, roller shutters, glass canopy and glass house

-            Underground utility construction work

-            Construction of RC External Wall for Male Toilet

Post Treatment Building

-            Installation of building services, Installation of mechanical equipment and piping system, Pressure Test

-            Underground utility construction work

-            Installation of Cat Ladders in Water Tanks and Metal Cladding

-            Placing Soil Mix at Roof

Inspection corridor

-            Installation of building services, Lift installation

-            Construction of roof tiling works and staircases no. 2

-            Installation of Movement Joints and glass window

CO2 Tanks

-          Installation of pipes and electrical wiring, testing and commissioning Combined Shaft and Pump room

-             Finishing, Grating; window; louvre installation Other

-            Watermain works at CLP 132 kV Substation

-             Staircases construction; Steel Bridge assembly and installation at elevated walkway

-             Road Construction, Footpath Construction, Landscape Construction, Irrigation System Construction, Water Pressure Test for Fire Services and Plumbing System in Zone A, B, C

-             Structure Construction, steel fence erection of Wave Deflector Wall at seawall area

December 2023

 

Administration Building

-            Landscaping works on roof of building.

-            External wall aluminum features installation

-            Finishing works for doghouse.

-            Installation of building services, cable laying, electrical switchboard, Pressure Test, electrical switchboard, testing and commissioning

Chemical building

-            Landscape work at roof

-            Construction of hose reel cabinet.

-            Defect rectification

Main Electrical & Central Chiller Plant Building

-            Installation of Roof Tile for Fuel Tank Room

-            Minor Installation of building services, electrical switchboard, cable laying, pressure test

ActiDAFF

-            Underground utility construction work

-            Installation of access opening covers for filtered water tank

-            Carrying out finishing works for staircase no. 3

-            Minor Installation of mechanical equipment, piping system, building services, electrical switchboards and cable laying, fiber-reinforced plastic cover Installation

Product Water Storage Tank Building

-            Water Test in Tank A

-            Waterproofing work at Roof Slab on Tank A

-            Tank A water test and defect rectification

-            Installation of building services, cable laying, Installation of mechanical equipment, steel pipe, Pressure Test

OSCG Building

-             Installation of Railing on Brine Maker Tank

-             Protective Coating for dangerous goods Rooms

-             Installation of building services, mechanical equipment and cable laying, Lightning Installation, testing and commissioning

Reverse Osmosis Building

-            Installation of Handrailings

-            Installation of Glass House

-            Installation of building services, electrical switchboard, cable laying, Photovoltaic Panel. Minor Installation of mechanical equipment and raised floor, testing and commissioning

-            Underground utility construction work

Post Treatment Building

-            Installation of Cat Ladders in Water Tanks

-            Placing Soil Mix at Roof

-            Curb Construction for Rescue Opening at Water Tanks

-            Installation of building services, mechanical equipment and piping system, Pressure Test

Inspection corridor

-            Construction of roof tiling works

-            Installation of steel balustrade at roof

-            Installation of Movement Joints

-            Installation of glass window

-            Installation of building services, Lift Installation

CO2 Tanks

-             Tank surface cleaning, testing and commissioning Combined Shaft and Pump room

-            Internal finishing, defect rectification Guard House

-            Installation of Building Services

-            Workshop construction work Other

-             Glass Roof and Glass Canopy installation at elevated walkway

-             Security Fence footing construction work

-             Manhole 5 Glass Reinforced Plastic Pipe Installation work

-             Underground utility rectification work

-             Road Construction

-             Traffic signage work

-             Footpath Construction

-             Landscape Construction

-             Landscape planting work

-             Irrigation System Construction

-             Slope work - Shotcreting; Rock anchor installation, Rock break

-             Water Pressure Test for Fire Services and Plumbing System

-             Traffic signage work

January 2024

 

Administration Building

-            Carrying out the floor tiles works at G/F

-            External wall painting works

-            Construction of block work for pipe duct

-            Installation of building services, cable laying, electrical switchboard, testing and commissioning

Chemical building

-            Installation of leakage collection pit cover

-            Underground utility construction work

-            Landscape work at roof

-            Defect rectification

Main Electrical & Central Chiller Plant Building

-            Installation of chillers, building services, electrical switchboard and cable laying

-            Installation of Roof Tile for Fuel Tank Room

ActiDAFF

-            Underground utility construction work

-            Installation of access opening cover

-            Construction of staircase no 2

-            Installation of mechanical equipment, piping system, installation of building services, electrical switchboards and cable laying, fiber-reinforced plastic cover Installation

Product Water Storage Tank Building

-            Installation of Cat Ladders in Water Tank A

-            Sealing slab opening in water Tank A

-            Re-construction of Wall PW8 in Water Tank A

-            Installation of metal cladding, building services, cable laying, mechanical equipment, steel pipe

-            Underground utility construction

OSCG Building

-             Protective Coating for dangerous goods Rooms

-             Placing Soil Mix at Roof

-             Installation of Metal Cladding (at East Side) and Roller Shutters and Window

-            Underground utility construction work

-            Installation of building services, mechanical equipment and cable laying, testing and commissioning

Reverse Osmosis Building

-            Installation of building services, electrical switchboard, cable laying, Installation of mechanical equipment, steel pipe, Glass Reinforced Plastic pipe, raised floor, testing and commissioning

-            Installation of metal cladding, handrailing, roller shutters, glass canopy and glass house

-            Underground utility construction work

-            Construction of Reinforced Concrete External Wall for Male Toilet

Post Treatment Building

-            Installation of building services, Installation of mechanical equipment and piping system, Pressure Test

-            Underground utility construction work

-            Installation of Cat Ladders in Water Tanks

-            Installation of Metal Cladding

-            Placing Soil Mix at Roof

Inspection corridor

-            Installation of building services, Lift installation

-            Construction of roof tiling works and staircases no. 2

-            Installation of Movement Joints and glass window

CO2 Tanks

-          Installation of pipes and electrical wiring, testing and commissioning Combined Shaft and Pump room

-             Finishing, Grating; window; louvre installation Other

-            Watermain works at CLP 132 kV Substation

-             Staircases construction; Steel Bridge assembly and installation at elevated walkway

-             Road Construction, Footpath Construction, Landscape Construction, Irrigation System Construction, Water Pressure Test for Fire Services and Plumbing System in Zone A, B, C

-             Structure Construction, steel fence erection of Wave Deflector Wall at seawall area

February 2024

 

Administration Building

-            Sealing up wall opening

-            External wall painting works

-            Construction of block work for pipe duct.

-            Installation of glass door for laboratory

-            Minor Installation of building services, cable laying and termination, Photovoltaic Panel Installation, Testing & Commissioning

Chemical building

-            Installation of Irrigation system

-            Construction of hose reel cabinet.

-            Defect rectification

Main Electrical & Central Chiller Plant Building

-            Installation of Roof Tile for Fuel Tank Room

-            Minor Installation of building services, electrical switchboard, cable laying, pressure test

ActiDAFF

-            Underground utility construction work

-            Installation of drainpipe on corridor

-            Minor Installation of mechanical equipment, installation of building services, Minor cable laying and termination, Installation of Lightning System, Installation of Fiber Reinforced Polymer Cover Installation, Testing & Commissioning

Product Water Storage Tank Building

-            Underground utility construction work

-            Water Test in Tank A and defect rectification

-            Waterproofing work at Roof Slab on Tank A

-            Tank A water test and defect rectification

-            Installation of building services, cable laying and termination, Testing & Commissioning

OSCG Building

-             Installation of Railing on Brine Maker Tank

-             Protective Coating for dangerous goods Rooms

-             Installation of building services, mechanical equipment and cable laying and termination, testing and commissioning

Reverse Osmosis Building

-            Placing Soil Mix at Roof

-            Installation of Glass House

-            Underground utility construction work

-            Installation of building services, electrical switchboard of cable laying and termination, Minor

Installation of mechanical equipment and raised floor, testing and commissioning, Photovoltaic Panel Installation

Post Treatment Building

-            Installation of Cat Ladders in Irrigation Tanks

-            Placing Soil Mix at Roof

-            Curb Construction for Rescue Opening at Water Tanks

-            Minor Installation of building services, Minor Installation of mechanical equipment, Cable laying and termination, Pressure Test

Inspection corridor

-            Construction of roof tiling

-            Internal decoration and finishing works

-            Installation of building services, Lift Installation

CO2 Tanks

-             Tank surface cleaning, testing and commissioning Combined Shaft and Pump room

-             CCTV Installation, Installation of Lightning System, Minor building services Installation, testing and commissioning

-             Internal finishing, defect rectification Guard House

-            Installation of Building Services

-            Workshop construction work

-            Architectural Builders Works and Finishes Other

-            Master meter Room Architectural Builders Works and Finishes

-             Open Channel and Wave deflector Wall

-             Glass Roof and Glass Canopy installation at elevated walkway

-             Security Fence footing construction work

-             Manhole 5 Glass Reinforced Plastic Pipe Installation work

-             Underground utility rectification work

-             Road Construction

-             Traffic signage work

-             Footpath Construction

-             Landscape Construction

-             Landscape planting work

-             Irrigation System Construction

-             Slope work - Shotcreting; Rock anchor installation, Rock break

-             Water Pressure Test for Fire Services and Plumbing System

-             Open Channel and Wave deflector Wall

-             Traffic signage work

 

 

 

 

 

Appendix D.3

Other Factor Might Affect the Monitoring Results

 

Other Factors might affect the monitoring results

Reporting Period

Nov 2023

Dec 2023

Jan 2024

Feb 2024

--

N/A

N/A

N/A

 

 

 

 

 

Appendix E

 

Summary of Exceedances

 

 

 

 

 

Table E1         Summary of Exceedance in Dec 2023

Date

Station

Tide

SS Level (mg/L)

Action

Level

Limit

Level

 

12/12/2023

WSR16

Ebb

5.83

Y

Y

WSR36

Ebb

6.50

Y

Y

NF1

Ebb

7.17

Y

Y

NF2

Ebb

5.50

Y

N

14/12/2023

WSR36

Flood

4.50

Y

Y

NF2

Flood

4.17

Y

N

16/12/2023

WSR1

Flood

3.50

Y

N

WSR2

Flood

3.58

Y

N

 

19/12/2023

WSR4

Flood

4.58

Y

N

WSR37

Flood

5.83

Y

Y

NF2

Flood

4.58

Y

N

 

 

 

21/12/2023

WSR1

Flood

4.00

Y

N

WSR2

Flood

4.67

Y

Y

WSR3

Flood

4.83

Y

Y

WSR4

Flood

4.33

Y

Y

WSR16

Flood

4.17

Y

Y

WSR33

Flood

4.17

Y

Y

NF1

Flood

4.83

Y

Y

NF2

Flood

4.50

Y

Y

23/12/2023

NF3

Ebb

5.67

Y

Y

 

 

 

 

26/12/2023

WSR1

Flood

4.00

Y

N

WSR2

Flood

4.67

Y

Y

WSR3

Flood

4.83

Y

Y

WSR4

Flood

4.33

Y

Y

WSR16

Flood

4.17

Y

Y

WSR33

Flood

4.17

Y

Y

NF1

Flood

4.83

Y

Y

NF2

Flood

4.50

Y

Y

NF3

Flood

4.33

Y

Y

 

 

26/12/2023

WSR3

Flood

4.83

Y

Y

WSR16

Flood

5.17

Y

Y

NF1

Flood

6.17

Y

Y

NF2

Flood

5.17

Y

Y

NF3

Flood

5.33

Y

Y

Table E2         Summary of Exceedance in Jan 2024

Date

Station

Tide

SS Level (mg/L)

Action

Level

Limit

Level

 

04/01/2024

WSR3

Flood

3.50

Y

N

WSR36

Flood

4.08

Y

Y

NF1

Flood

3.50

Y

N

NF3

Flood

4.00

Y

Y

11/01/2024

WSR2

Ebb

4.50

Y

N

WSR3

Ebb

5.17

Y

Y

13/01/2024

NF1

Flood

4.67

Y

N

18/01/2024

WSR33

Flood

4.83

Y

Y

WSR36

Flood

5.33

Y

Y

 

 

 

23/01/2024

WSR1

Ebb

6.83

Y

Y

WSR2

Ebb

6.67

Y

Y

WSR3

Ebb

5.67

Y

N

WSR16

Ebb

5.33

Y

N

WSR33

Ebb

6.83

Y

Y

WSR36

Ebb

6.00

Y

Y

WSR37

Ebb

6.83

Y

Y

30/01/2024

NF3

Flood

5.33

Y

N

Table E3         Summary of Exceedance in Feb 2024

Date

Station

Tide

SS Level (mg/L)

Action

Level

Limit

Level

 

 

01/02/2024

WSR3

Flood

4.50

Y

Y

WSR4

Flood

5.17

Y

Y

WSR16

Flood

4.50

Y

Y

NF1

Flood

5.67

Y

Y

NF2

Flood

4.25

Y

Y

NF3

Flood

4.58

Y

Y

07/02/2024

WSR2

Flood

4.50

Y

Y

WSR3

Flood

5.17

Y

Y

09/02/2024

NF3

Flood

4.50

Y

N

12/02/2024

WSR1

Flood

5.67

Y

Y

 

 

20/02/2024

WSR16

Flood

3.42

Y

N

WSR33

Flood

3.75

Y

Y

WSR37

Flood

3.42

Y

N

NF1

Flood

4.17

Y

Y

NF3

Flood

4.00

Y

Y

 

 

 

 

27/02/2024

WSR2

Flood

3.17

Y

N

WSR3

Flood

4.83

Y

Y

WSR4

Flood

3.67

Y

Y

WSR16

Flood

3.83

Y

Y

WSR33

Flood

4.17

Y

Y

WSR36

Flood

3.50

Y

Y

WSR37

Flood

3.83

Y

Y

NF1

Flood

5.67

Y

Y

NF2

Flood

5.00

Y

Y

NF3

Flood

5.83

Y

Y

29/02/2024

WSR4

Flood

5.17

Y

Y

WSR27

Flood

4.25

Y

Y

 

 

 

 

 

Appendix F

Waste Flow Table

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Appendix G

Complaint Log

 

 

 

 

 

Table G1              Statistical Summary of Environmental Complaints

 

Reporting Period

Environmental Complaint Statistics

Frequency

Cumulative

Complaint Nature

1 December 2023

-

29 February 2024

 

1

 

2

 

Noise

 

 

 

 

Table G2              Statistical Summary of Environmental Summons

 

Reporting Period

Environmental Summons Statistics

Frequency

Cumulative

Details

1 December 2023

-

29 February 2024

 

0

 

0

 

N/A

 

 

 

 

Table G3              Statistical Summary of Environmental Prosecution

 

Reporting Period

Environmental Prosecution Statistics

Frequency

Cumulative

Details

1 December 2023

-

29 February 2024

 

0

 

0

 

N/A

 

 

 

 

 

Appendix H

 

Event/   Action   Plan   for   Water   Quality Exceedance

 

 

 

 

 

 

Contract No. 13/WSD/17

Design, Build and Operate First Stage of Tseung Kwan O Desalination Plant Quartertly EM&A Report

 

Table G1              Event and Action Plan for Water Quality Monitoring

 

 

 

 

 

Appendix I

 

Event/ Action Plan for Construction Noise Exceedance

 

 

 

 

 

 

Contract No. 13/WSD/17

Design, Build and Operate First Stage of Tseung Kwan O Desalination Plant Quarterly EM&A Report

 

Table E1              Event and Action Plan for Construction Noise Monitoring

 

 

 

 

 

Appendix J

 

Event/  Action  Plan  for   Pre-Operation Phase Coral Monitoring Exceedance

 

 

 

 

 

 

 

Table E3              Event and Action Plan for Pre-Operation Phase Coral Monitoring