CONTENTS

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

1.         Basic Contract Information.......................................................................................................................................... 3

2.         Noise....................................................................................................................................................................................... 6

3.         Water Quality................................................................................................................................................................... 11

4.         Waste................................................................................................................................................................................... 18

5.         Landfill Gas Monitoring............................................................................................................................................... 19

6.         SUMMARY OF MONITORING EXCEEDANCE, COMPLAINTS, NOTIFICATION OF SUMMONS AND PROSECUTIONS.............................................................................................................................................................. 20

7.         EM&A Site Inspection................................................................................................................................................... 22

8.         Conclusions and Recommendations...................................................................................................................... 23

 

 

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 Graphical Presentation

Appendix E            Site Inspection Proforma

Appendix F             Waste Flow Table

Appendix G            Summary of Exceedances

Appendix H            Complaint Log

Appendix I              Event/Action Plan for Noise and Water Quality 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 1st Annual EM&A Review Report, prepared by ASCL, for the Contract summarizing the monitoring results and audit findings of the EM&A programme at and around Tseung Kwan O Area 137 (TKO 137) during the reporting period from 16 March 2020 to 31 March 2021.

 

A4. The EM&A programme for this contract has covered environmental monitoring on water quality, 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 environmental monitoring and audit works

 

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

 

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

 

A7. No water quality monitoring was conducted between March 2020 to February 2021, since the commencement of marine construction and dredging activities for the Project was scheduled in March 2021. All water quality monitoring was conducted as schedule during the reporting period.

 

A8. No landfill gas monitoring was conducted during the reporting period since SENT landfill Extension is still under construction, the landfill gas monitoring will be conducted after the commencement of operation of the SENT Landfill Extension.


Table I  Summary of Environmental Monitoring Works

Environmental Monitoring works

Frequency

Noise Monitoring

N/A

Water Quality Monitoring

13

Landfill Gas Monitoring

N/A

Environmental Site Inspection

55

 

Summary of environmental monitoring works

 

A9. No construction noise monitoring was conducted during the reporting period. No Action Level exceedance was recorded during the reporting period.

 

A10. The EM&A works for water quality were conducted during the reporting period in accordance with the EM&A Manual.

 

A11. All water quality monitoring was conducted as schedule in the reporting period. Six (6) of the general water quality monitoring results of suspended solids (SS) obtained had exceeded the Action level. One (1) of the general water quality monitoring results of SS obtained during the reporting period had exceeded the Limit Level.

 

A12. All Action and Limit Level exceedance was concluded to be unrelated to the Project. Details of the exceedance could be referring to Appendix O of the represent Monthly EM&A Report.

 

A13. No landfill gas monitoring was conducted during the reporting period.

 

Complaint Handling and Prosecution

 

A14. No environmental complaint was received during the reporting period.

 

A15. Neither notifications of summons nor prosecution was received for the Contract.

 

Reporting Change

 

A16. There was no change to be reported that may affect the on-going EM&A programme.


1.            BASIC CONTRACT INFORMATION

 

1.1.       Background

 

The Jardine Engineering Corporation, Limited, China State Construction Engineering (Hong Kong) Limited and Acciona Agua, S.A. Trading 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 1st Annual EM&A Review Report for the Project which summarizes the key findings of the EM&A programme during the reporting period from 16 March 2020 to 31 March 2021.

1.3.       Contract Organization

 

The Contract Organization structure for Construction Phase is presented in Figure 1.1 and contact details of the key personnel are presented in Table 1.1 below:


 

                                Figure 1.1         Contract Organization Chart

 

                                Table 1.1           Contact Details of Key Personnel

 

Party

Position

Name

Telephone no.

Project Proponent (WSD)

SE/CM2

Benny Lam

2634-3573

Supervising Officer (Binnies Hong Kong Limited)

Project Manager

Christina Ko

2608-7302

Chief Resident Engineer

Roger Wu

6343-1002

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

S.A. Trading

 

Project Manager

Stephen Yeung

 

2807-4665

Environmental Monitoring Manager

 

Brian Kam

 

9456-9541

Acuity Sustainability Consulting Limited

Environmental Team Leader (ETL)

 

Jacky Leung

 

2698-6833

 

ANewR Consulting Limited

Independent Environmental Checker (IEC)

 

Louis Kwan

 

2618-2831

 

1.4.       Summary of Construction Works

 

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

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


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

 

Parameters

Status

Water Quality

Baseline Monitoring under EM&A Manual

The baseline water quality monitoring was conducted between 12 May 2020 to 6 Jun 2020

Impact Monitoring

On-going

Noise

Baseline Monitoring

The baseline noise monitoring result has been reported in Baseline Monitoring Report and submitted to EPD

under EP Condition 3.4

Impact Monitoring

On-going

Waste Management

Mitigation      Measures      in      Waste Management Plan

On-going

Environmental Audit

Site Inspection covering Measures of Air Quality, Noise Impact, Water Quality, Waste, Ecological Quality,

Fisheries, Landscape and Visual

On-going

 

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

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

 

 

 


2.            NOISE

 

2.1.      Monitoring Requirements

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

 

2.2.      Monitoring Locations

 

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

According to the environmental findings detailed in the EIA report and Baseline Monitoring Report, the designated locations for the construction noise monitoring are listed in Table 2.1 below.

Table 2.1 Noise Sensitive Receivers

 

NSR ID

Noise Sensitive Receivers

Monitoring Location

Position

NSR 4

Creative Secondary School

Roof Floor

1 m from facade

NSR 24

PLK Laws Foundation College

Pedestrian Road on Ground Floor

Free-field

NSR 31

School of Continuing and Professional Studies - CUHK

Roof Floor

1 m from facade

 

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


 

 

Figure 2.1 NSR4 Creative Secondary School

 

Figure 2.2 NSR24 PLK Laws Foundation College


 

 

Figure 2.3 NSR31 School of Continuing and Professional Studies - CUHK

 

2.3.      Monitoring Parameter, frequency and duration

 

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

Table 2.2 Noise Monitoring Parameters, Time, Frequency and Duration

 

Time

Duration

Interval

Parameters

Daytime: 0700-1900

Day time: 0700-1900 (during normal weekdays)

Continuously  in  Leq  5min/Leq

30min (average of 6 consecutive Leq 5min)

Leq 30min

L10 30min & L90 30min

 

2.4.       Impact Monitoring Methodology

 

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


2.5.       Action and Limit Levels

 

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

S.16 are presented in Table 2.3.

 

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

 

Time Period

Action

Limit (dB(A))

0700-1900 on normal weekdays

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

-          70 dB(A) for school and

-          65 dB(A) during examination period

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

 

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


 

 

2.6.                Monitoring Results and Observations

 

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

 


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

 

 

 


3.            WATER QUALITY

 

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

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

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

 

-               Dredging activities during construction phase;

 

-               Discharge of effluent from main disinfection during construction phase;

 

-               Operation phase - first year upon commissioning; and,

 

-               Continuous monitoring of effluent quality.

 

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

 

3.1.       Water Quality Parameters

 

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


Table 3.1        Parameters measured in the impact marine water quality monitoring

 

Parameters

Unit

Abbreviation

In-situ measurements

Dissolved oxygen

mg/L

DO

Temperature

oC

-

pH

-

-

Turbidity

NTU

-

Salinity

0/00

-

Total Residual Chlorine NOTE1

mg/L

TRC

Laboratory measurements

Suspended Solids

mg/L

SS

Iron-Soluble

mg/L

Fe

Anti-scalant as Reactive Phosphorus

mg/L

PO4 as P-

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

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

 

3.2.       Monitoring Equipment

 

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

 

3.3.       Monitoring Location

 

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


Table 3.3         Location of Impact Water Quality Monitoring Station

 

Station

Easting

Northing

Description

CE

843550

815243

Upstream control station at ebb tide

CF

846843

810193

Upstream control station at flood tide

WSR1

846864

812014

Ecological sensitive receiver at Tung Lung Chau

WSR2

847645

812993

Fisheries sensitive receiver at Tung Lung Chau

WSR3

848023

813262

Ecological sensitive receiver at Tung Lung Chau

WSR4

847886

814154

Ecological sensitive receiver at Tai Miu Wan

WSR16

845039

815287

Ecological sensitive receiver at Fat Tong Chau

WSR33

847159

814488

Ecological sensitive receiver at Tai Miu Wan

WSR36

846878

814081

Ecological sensitive receiver at Kwun Tsai

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

 

WSR1 to WSR37 were identified in accordance with Annex 14 of the EIAO-TM as well as Clause

3.4.4.2 of the Environmental Impact Assessment Study Brief for Desalination Plant at Tseung Kwan O (No. ESB-266/2013). WSR1 to WSR3 are sited near the Tung Lung Chau Fish Culture Zone; WSR16 and WSR36 are sited near the coral assemblages along the coastlines of Fat Tong Chau and Kwun Tsai respectively; WSR 4 and WSR33 are sited near the Coastal Protection Area and coral assemblages in waters of Tai Miu Wan; WSR37 is sited near the fisheries resource including spawning and nursery grounds at the coastal water of Tit Cham Chau.

 



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


3.4.       Action and Limit levels

 

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

Table 3.4           Derived Action and Limit Levels for Water Quality

 

Parameters

Action

Limit

Construction Phase Impact Monitoring

DO in mg/L

Surface and Middle

Surface and Middle

 

7.30 mg L-1

4 mg L-1

 

Bottom

Bottom

 

7.31 mg L-1

2 mg L-1

 

Tung Lung Chau Fish Culture Zone

Tung Lung Chau Fish Culture Zone

 

5.1 mgL-1 or level at control station

5.0 mgL-1 or level at control station

 

(whichever the lower)

(whichever the lower)

SS        in

mg/L

5.00 mg L-1 or 20% exceedance of

6.00 mg L-1 or 30% exceedance of

(Depth-

 

value     at      any      impact     station

value at any impact station compared

averaged)

 

compared with corresponding data

with      corresponding      data      from

 

 

from control station

control station

Turbidity in NTU

2.41 NTU or 20% exceedance of

2.84 NTU or 30% exceedance of

(Depth-

value     at      any      impact     station

value at any impact station compared

averaged)

compared with corresponding data

with      corresponding      data      from

 

from control station

control station

First-year Operation Phase Monitoring iv

DO in mg/L

Surface and Middle

Surface and Middle

 

7.30 mg L-1

4 mg L-1

 

Bottom

Bottom

 

7.31 mg L-1

2 mg L-1

 

Tung Lung Chau Fish Culture Zone

Tung Lung Chau Fish Culture Zone

 

5.1 mgL-1 or level at control station

5.0 mgL-1 or level at control station

 

(whichever the lower)

(whichever the lower)


 

SS        in        mg/L (Depth- averaged)

5.00 mg L-1 or 20% exceedance of valueat any impact station compared with corresponding data

from control station

6.00 mg L-1 or 30% exceedance of value at any impact station compared with  corresponding  data  from

control station

Turbidity in NTU (Depth- averaged)

2.41 NTU or 20% exceedance of value at any impact station compared with corresponding data

from control station

2.84 NTU or 30% exceedance of value at any impact station compared with  corresponding  data  from

control station

Salinity in PSU (Depth- averaged)

34.28 PSU or 9% exceedance of value at any impact station compared with corresponding data

from control station

34.60 PSU or 10% exceedance of value at any impact station compared with  corresponding  data  from

control station

Iron in mg/L (Depth-

averaged)

0.3 mgL-1

0.3 mgL-1

Notes:

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

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

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

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

 

 

3.5.       Monitoring Programme

 

No marine water quality monitoring was conducted between March 2020 to February 2021. Marine construction works and dredging activities for the Project were commencement in March 2021 and April 2021 respectively.

The ET of the Contract had conducted the impact water quality monitoring between 1 March 2021 to 31 March 2021 at the ten designated monitoring stations and the six designated monitoring at waters near TKO in accordance with the EM&A Manual and Contract Specification respectively.


3.6.       Monitoring results and observations

 

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

Six (6) of the general water quality monitoring results of SS obtained had exceeded the Action level. One (1) of the general water quality monitoring results of SS obtained during the reporting period had exceeded the Limit Level.

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

 

 

 


4.            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. Details of cumulative waste management data are presented as a waste flow table in Appendix F.

 

 

 


5.            LANDFILL GAS MONITORING

 

5.1.       Monitoring Requirement

In according 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.

For the part of the desalination plant and the indicative area of natural slope mitigation works fall within the SENT Landfill Extension Consultation Zone in this contract, since the SENT Landfill Extension is still under construction, the Landfill gas monitoring will be conducted after the commencement of operation of the SENT Landfill Extension which will be 2021 Quarter 3 according to the latest construction programme shown in the monthly EM&A Report of SENT Landfill Extension. The Contractor’s safety officer will keep review the necessity of landfill gas monitoring during the construction stage. No landfill gas monitoring was conducted in the reporting period.

 

 

 


6.            SUMMARY OF MONITORING EXCEEDANCE, COMPLAINTS, 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 marine water quality monitoring was conducted between March 2020 to Feb 2021. Marine construction works and dredging activities for the Project were commencement in March and April 2021 respectively.

Six (6) of the general water quality monitoring results of SS obtained had exceeded the Action level. One (1) of the general water quality monitoring results of SS obtained during the reporting period had exceeded the Limit Level.

Details of the exceedance could be referring to Appendix O of the represent Monthly Report. No landfill gas monitoring was conducted during the reporting period.

No notification of summons and prosecution was received in the reporting period. Statistics on complaint and regulatory compliance are summarized in Appendix J.

 

 

 


7.            EM&A SITE INSPECTION

 

Site inspections were carried out on a weekly basis to monitor the implementation of proper environmental pollution control and mitigation measures under the Contract. In the reporting period, site inspections were carried out from March 2020 to March 2021.

Fifty-five site inspection were carried out in the reporting period.

 

Environmental deficiencies were observed during weekly site inspection. Key observations during the site inspections and during the reporting period could be referring to the represent Monthly Report.

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.

 

 

 


8.            CONCLUSIONS AND RECOMMENDATIONS

 

This is the 1st Annual EM&A Review Report for the Project which summarizes the key findings of the EM&A programme during the reporting period from 16 March 2020 to 31 March 2021, in accordance with the EM&A Manual and the requirement under FEP-01/503/2015/A.

 

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

 

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

Six (6) of the general water quality monitoring results of SS obtained had exceeded the Action level. One (1) of the general water quality monitoring results of SS obtained during the reporting period had exceeded the Limit Level. All Action and Limit Level exceedances were unrelated to the project.

 

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

 

No landfill gas monitoring was conducted in the reporting period.

 

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

 

According to the environmental site inspections performed in the reporting month, the Contractor is reminded to pay attention on maintaining proper materials storage, site tidiness and dust suppression mitigation measures.

 

No environmental complaint was received in the reporting period.

 

No notification of summons or prosecution was received since commencement of the Contract.

 

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, particularly dry season

Contractor(s)

 

ü

 

NA

 

S4.8.1

The area where dusty work takes place should be sprayed with water or a dust suppression chemical immediately prior to, during and immediately after dusty activities as far as practicable.

Land site/ During Construction

Contractor(s)

 

ü

 

Implemented

 

S4.8.1

All dusty materials should be sprayed with water or a dust suppression chemical immediately prior to any loading, unloading or transfer operation.

Land site/ During Construction

Contractor(s)

 

ü

 

Implemented

 

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, rectified 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

Temporary stockpiles of dusty materials will be either covered entirely by impervious sheets or sprayed with water to maintain the entire surface wet all the time.

Land site/ During construction

Contractor(s)

 

ü

 

Implemented, rectified after reminder

 

S4.8.1

Stockpiles of more than 20 bags of cement, dry pulverised fuel ash and dusty construction materials will be covered entirely by impervious sheeting sheltered on top and 3-sides.

Land site/ During construction

Contractor(s)

 

ü

 

Implemented, rectified after observation and reminder

 

S4.8.1

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

Land site/ During construction

Contractor(s)

 

ü

 

Implemented

 

S4.8.1

Ultra-low-sulphur diesel (ULSD) will be used for all construction plant on- site, as defined as diesel fuel containing not more than 0.005% sulphur by weight) as stipulated in Environment, Transport and Works Bureau Technical Circular (ETWB-TC(W)) No 19/2005 on Environmental Management on Construction Sites.

Land site/ During construction/ During Operation

Contractor(s)

 

ü

ü

Implemented

Environment, Transport and Works Bureau Technical Circular (ETWB- TC(W)) No

19/2005 on Environmental Management on

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)/ ET & IEC

 

ü

 

Implemented

 

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


 

EIA

Reference

Recommended Environmental Protection Measures/ Mitigation Measures

Objectives of the recommended measures & main

concerns to address

Implementation Agent

Implementatio

n Stage

Implementation status

Relevant Legislation & Guidelines

D

C

O

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

S5.7

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

Noise control/ During construction

Contractor(s)

 

ü

 

N/A

A Practical Guide for the Reduction of Noise from

Construction Works

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

A Practical Guide for the Reduction of Noise from

Construction Works

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

A Practical Guide for the Reduction of Noise from Construction Works

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

A Practical Guide for the Reduction of Noise from Construction Works

S5.7

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

Noise control/ During construction

Contractor(s)

 

ü

 

N/A

A Practical Guide for the

Reduction of Noise from Construction Works

S5.7

Use of Quite Powered Mechanical Equipment (QPME).

Noise control/ During construction

Contractor(s)

 

ü

 

Implemented

A Practical Guide for the Reduction of Noise from Construction Works

S5.7

Movable noise barriers of 3m in height with skid footing should be used and located within a few metres of stationary plant and mobile plant such that the line of sight 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

A Practical Guide for the Reduction of Noise from Construction Works,

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

A Practical Guide for the

Reduction of Noise from Construction Works,

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

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

Implementatio

n Stage

Implementation status

Relevant Legislation & Guidelines

D

C

O

S5.7

PMEs will not be used at the works areas near educational institutions with residual impact (ie the “influence area” within a radius of 40m) during school hours in order to reduce impact to the educational institutions.

Noise control / During construction

Contractor(s)

 

ü

 

N/A

A Practical Guide for the Reduction of Noise from

Construction Works

S5.7

Noise enclosures or acoustic sheds would be used to cover stationary PME such as generators.

Portable/Movable noise enclosure made of material with superficial

surface density of at least 7 kg m-2 may be used for screening the noise from operation of the saw/groover, concrete.

Noise control/ Pre- construction/ During construction

Contractor(s)

ü

ü

 

N/A

 

S5.9

Sawcutting pavement, breaking up of pavement, excavation /shoring, pipe laying, backfilling, reinstatement (concrete) and pipe jacking shall be scheduled outside the examination period.

Noise control/ Pre- construction/ During construction

Contractor(s)

ü

ü

 

N/A

 

S5.9

In view the duration of noise exceedance at Creative Secondary School, PLK Laws Foundation College, TKO Kei Tak Primary School and School of Continuing and Professional Studies-CUHK is limited to 8 weeks, the construction work in the influence areas near the four schools shall be scheduled during long school holidays (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

ET

 

ü

 

N/A

 

S5.10

The effectiveness of on-site control measures could also be evaluated through the regular site audits.

All facilities/ During construction

Contractor(s)/ ET & IEC

 

ü

 

Implemented

-

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


 

EIA

Reference

Recommended Environmental Protection Measures/ Mitigation Measures

Objectives of the recommended measures & main

concerns to address

Implementation Agent

Implementation Stage

Implementation status

Relevant Legislation & Guidelines

D

C

O

Water Quality

S6.9

Dredged marine sediment will be disposed of in a gazetted marine disposal area in accordance with marine dumping permit conditions of the Dumping at Sea Ordinance (DASO).

Marine Dredging/ During construction

Contractor(s)

 

ü

 

Implemented

Dumping at Sea Ordinance (DASO)

S6.9

Disposal vessels will be fitted with tight bottom seals in order to prevent leakage of material during transport.

Marine Dredging/ During construction

Contractor(s)

 

ü

 

Implemented

-

S6.9

Barges will be filled to a level, which ensures that material does not spill over during transport to the disposal site and that adequate freeboard is maintained to ensure that the decks are not washed by wave action.

Marine Dredging/ During construction

Contractor(s)

 

ü

 

Implemented

-

S6.9

After dredging, any excess materials will be cleaned from decks and exposed fittings before the vessel is moved from the dredging area.

Marine Dredging/ During construction

Contractor(s)

 

ü

 

Implemented

-

S6.9

All vessels should be well maintained and inspected before use to limit any potential discharges to the marine environment.

Marine Dredging/ During construction

Contractor(s)

 

ü

 

Implemented

-