Revision History
|
Rev.
|
Description of Modification
|
Date
|
|
A
|
First Issue for Comments
|
24/05/2023
|
|
B
|
Revised according to IEC’s and SOR’s comments
|
13/06/2023
|
CONTENTS
Executive Summary......................................................................................................................... 1
Basic Project Information.......................................................................................................... 6
Noise....................................................................................................................................... 11
Water Quality.......................................................................................................................... 15
Waste...................................................................................................................................... 19
Landfill Gas Monitoring........................................................................................................... 22
Summary of Monitoring Exceedance, Complaints, Notification of Summons and Prosecutions 25
EM&A Site Inspection.............................................................................................................. 27
Conclusions and Recommendations........................................................................................ 28
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
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
11th 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
September to 30
November 2022.
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:
ActiDAFF
-
Water proofing work on roof of Cartridge Filter Plant Room and Construction of kiosks and installation of louvre
-
Installation of R/F Kiosk Metal Doors
-
Underground utility construction
-
Scaffolding, installation of mechanical equipment and piping
On-Site Chlorine
Generation Building (OSCG
Bldg)
-
Installation of Design for Manufacturing and Assembly Panel
-
Resin Injection work & Water Test for Brine Tank
-
Construction of Outside Staircases at West Side Ground floor
-
Installation of building services and mechanical equipment
CO2
Tank Area
-
Installation of Fencing and pipes
Administration Building
-
Construction of parapet and internal finishes at 2/F, 3/F and 4/F and Construction of roof of lift shaft
-
Installation of hoarding on 2/F and waterproofing works at 1/F
-
Installation of Aluminum Window, tiling works, and louvre
-
Carrying out waterproofing works at 1/F open area and Roof
-
Installation of Aluminium Window, tiling works, and louvre
-
Installation of building services, Lifting of electrical switchboard
Inspection corridor
-
Steel fixing works for segment 6, segment 4 and segment 3 and construction of stair tower
Post Treatment
Building (PTB)
-
Installation of building services, Lifting of lime silo, filter press
-
Construction of Outside Staircase to Filter Press Room
-
Installation of Aluminium Louvre
-
Underground utility construction
Product Water
Storage
Tank
(PWST)
-
Carbon steel pipe installation work
-
Installation of building services, Installation of mechanical equipment, steel pipe
-
Resin Injection work & Water Test for 4 Water Tanks
-
Installation of Cat Ladders in 4 Water Tanks and Upper Roof Tile
-
Underground utility construction
Chemical Building
-
Underground utility (UU) Construction Work
-
Covering the wall opening and water proofing works at the roof
-
Installation of building services, Lifting of steel tanks
Reverse Osmosis
(RO)
Building
-
Installation of building services, electrical switchboard, Installation of mechanical equipment, steel pipe, GRP pipe, Lifting of electrical switchboard
-
Installation of Design for Manufacturing and Assembly Panels at East & West Sides
-
Construction of Staircases (Inside and Outside Locations)
-
Installation of roof tiles, alum, and louvre
-
Underground utility construction
Main Electrical
and
Central
Chiller
Plant
building (MECCP)
-
Installation of Upper Roof Tiles
-
Construction of Check Water Meter Cabinet
-
Installation of Metal and Timber Doors
-
Installation of chillers, building services, electrical switchboard
Outfall Shaft
-
Dredging for diffuser pipe caisson removal and Glass Reinforced Plastics (GRP) Pipe installation
Intake Shaft
-
Staircases and internal finishing, puddle pipe installation, stop log wall construction
-
Installation of mechanical equipment and piping, stoplogs and band screens
-
Shafts backfill rock and excavation and lateral support (ELS) removal
-
Outfall Shaft
Combined Shaft
-
Staircases and internal finishing, puddle pipe installation, stop log wall construction
-
Installation of mechanical equipment and piping, stoplogs and band screens
Pump room
-
Staircases and internal finishing, overhead crane installation
Open Channel
-
Wall construction
-
Trench excavation, structure installation, Grouting and backfill
Slope
-
Excavation at slope toe and access erection, mini piles construction
Elevated Walkway
-
Lift shaft construction
Other
-
132 kV Substation (Hill Side) Backfill
-
132 kV temporary emergency vehicular access (eva) Construction
-
Permanent road construction at Zone A, B, C
A6. The major
environmental impacts brought
by
the
above
construction works include:
-
Construction dust and noise generation from marine construction works, excavation works, excavation works, construction works, rock cutting works and pipe pilling driving works;
- Waste generation from the construction activities
- Impact on water quality from marine construction works and inland construction works
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; and
- Deployment of temporary silt curtain in the area where marine construction works were conducted and deployment of water sedimentation tanks for treatment of wastewater at inland areas before discharge
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. The EM&A works for water quality were conducted during the reporting period in
accordance with the EM&A Manual.
A10. Water quality monitoring was conducted as scheduled in the reporting period. Three hundred
and
seventy-five (375) action
level
exceedances and three
hundred
and
forty
(340) limit level exceedances for suspended solids (SS) of impact water quality monitoring were recorded
in
the
reporting period. All
action
and
limit
level
exceedances were concluded
non- project
related.
A11. In this reporting period, 62 times of landfill gas monitoring were recorded at Wan Po Road (Ch1+513 - Ch1+625). No action and limit level exceedance for methane, oxygen and carbon dioxide was recorded.
A12. 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.
A13. 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
|
Sep 2022
|
Oct 2022
|
Nov 2022
|
|
Noise Monitoring
|
N/A
|
N/A
|
N/A
|
|
Water Quality Monitoring
|
1, 3, 6, 8, 10, 13, 15,
17, 20, 22, 24, 27 and
29 September 2022
|
1, 4, 6, 8, 11, 13, 15,
18, 20, 22, 25, 27 and
29 October 2022
|
5, 8, 10, 12, 15, 17,
19, 22, 24, 26 and 29
November 2022
|
|
Landfill Gas monitoring
|
5, 6, 7, 8, 9, 10, 12, 13,
14, 15, 16, 17, 19, 20,
21, 22, 23, 24, 26, 27,
28, 29 and 30
September 2022
|
3, 4, 5, 6, 7, 8, 10 and
11 October 2022
|
N/A
|
|
Environmental Site Inspection
|
6, 13, 20 and 30
September 2022
|
5, 11, 18, 25 and 31
October 2022
|
8, 15, 22 and 29
November 2022
|
Noted:
(1) Due
to
Strong
Wind
Signal
No.3,
the
water
quality
monitoring
(Ebb
tide)
on
18
October
2022
was
cancelled.
(2) Due
to
adverse
weather
condition
(Strong
wind
signal
No.3),
water
quality
monitoring
on
1
November
2022
was
cancelled.
(3) According to Hong Kong Observatory weather information, east to north-easterly winds of force 6 to 7, occasionally force 8 in east and rough sea waves was predicted, due to safety concern water quality monitoring on 3 November 2022 was
cancelled.
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
|
375
|
340
|
715
|
0
|
0
|
0
|
|
pH
|
0
|
0
|
0
|
0
|
0
|
0
|
|
Salinity
|
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
A14.
No environmental complaint, notifications of summons or prosecution was received during the reporting period.
Reporting Change
A15. 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
11th Quarterly EM&A
Report
for
the
Project
which
summarizes the key
findings of the EM&A programme during the reporting period from 1 September 2022 to 30 November 2022.
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.
|
|
Project Proponent
|
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
|
Jacky Leung
|
2698-6833
|
|
ANewR Consulting Limited
|
Independent Environmental Checker (IEC)
|
Louis Kwan
|
2618-2831
|
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.
ActiDAFF
-
Underground utility (UU) Construction Work
-
Water proofing work on roof of Cartridge Filter Plant Room and Construction of kiosk and installation of louvre
-
Construction of Side Tanks No. 5 ‐ 8
-
Installation of GRP Casts in Media Chambers co. 9 ‐ 16
CLP 132kV
Substation
-
Underground utility (UU) Construction Work
-
Construction of temporary emergency vehicular access (eva)
On-Site Chlorine
Generation Building (OSCG
Bldg)
-
Internal finishing work
-
Water tightness test of water tank & flat roof
CO2
Tank Area
-
Internal finishing work
Administration Building
-
Construction of parapet and internal finishes at G/F, 1/F and 2/F
-
Installation of hoarding on 2/F
-
Construction of 3/F to 4/F walls and columns
-
Installation of curtain wall supports
Inspection corridor
-
Construction of stair tower and Steel fixing works for segment 6 and segment 4
-
Construction of columns and beams of FT-5, FT6, FT7 and FT-8
Post Treatment
Building (PTB)
-
Construction of Sludge thickener, Post Treatment Building
-
Water tightness test of water tank & flat roof
Product Water
Storage
Tank
(PWST)
-
Underground utility (UU) Construction Work
-
Carbon steel pipe installation Work
-
Design for Manufacturing and Assembly (DfMA) installation at PWST South side
-
Water tightness test of water tank & flat roof
Chemical Building
-
Underground utility (UU) Construction Work
-
Water proofing work on roof
-
Carrying out of Finishing works in the Plant Room
Reverse Osmosis
(RO)
Building
-
Underground utility (UU) Construction Work
-
Staircases and internal finishing work
-
DfMA installation at RO Building North side
-
Water tightness test of water tank & flat roof
Main Electrical
and
Central
Chiller
Plant
building (MECCP)
-
Installation of louvre, metal doors and timber doors
-
Water tightness test of water tank & flat roof
Outfall Shaft
-
Install marine outfall structure, concreting, GRP Pipe installation, Dredging for diffuser
-
Bulkhead installation at Outfall tunnel
Intake Shaft
-
Levelling of formation level & install marine intake structure
-
General cleaning for finial inspection and flooded by seawater at Intake tunnel
Combined Shaft
-
Permanent structure construction from +4.9mPD to +15.3mPD
Pump room
-
Permanent structure Wall construction from +6.8 to 14.3mPD
Open Channel
-
Trench excavation and structure installation, grouting and backfill
Slope
-
Excavation at slope toe and access erection, mini piles construction
EM&A Works
-
Installation of building services, Lifting of steel tanks at Chemical Building
-
Installation of building services at Administration Building
-
Installation of building services, Lifting of lime silo, filter press and piping at PTB
-
Installation of building services, mechanical equipment, steel pipe at PWST
-
Installation of building services, steel pipe, Glass fiber reinforced plastics pipe pipe and lifting of electrical switchboard at RO Building
-
Installation of chillers, building services and electrical switchboard at MECCP
-
Scaffolding, installation of mechanical equipment and piping at ActiDAFF
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
|
|
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
|
-
|
|
Construction Noise Permit
|
|
GW-RE0627-22
|
29/06/2022
|
21/12/2022
|
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
|
|
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
|
|
Landfill Gas
|
|
Regular Monitoring when Construction Works are within the 250m Consultation Zone
|
In this reporting period, 62 times of landfill gas monitoring were recorded at Wan Po Road (Ch1+360 - Ch1+513). No exceedance of action and limit level for
methane, oxygen and carbon dioxide was observed
|
|
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 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
