Revision History
|
Rev. |
Description of Modification |
Date |
|
A |
First Issue for Comments |
12/09/2022 |
|
B |
Revised according to SOR’s and IEC’s comment |
19/09/2022 |
6. Summary of Exceedance, Complaints, Notification of Summons and Prosecutions.......... 31
Appendix B Overview of Desalination Plant in Tseung Kwan O
Appendix
C Summary
of
Implementation Status of
Environmental Mitigation
Appendix D Impact Monitoring Schedule of the Reporting Month
Appendix E Event/Action Plan for Noise Exceedance
Appendix F Noise
Monitoring Equipment Calibration
Certificate (Blank)
Appendix G Event/Action Plan for Water Quality Exceedance
Appendix H Waste Flow Table
Appendix I Site Inspection Proforma
Appendix J Complaint Log
Appendix
K Impact
Monitoring Schedule of
Next
Reporting Month
Appendix L Water Quality and Landfill Gas Monitoring Data
Appendix M HOKLAS Laboratory Certificate
Appendix
N Water
Quality
and
Landfill Gas Equipment
Calibration Certificate
Appendix O Exceedance Report(s)
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 30th Monthly 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 August 2022 to 31 August 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 Contract included the followings:
- 132 kV Underground utility (UU) and temporary emergency vehicular access (eva) construction work at Zone C
- UU Construction Work at ActiDAFF, Reverse Osmosis (RO) Building, Chemical Building and Product Water Storage Tank (PWST)
- Carbon steel pipe installation Work at PWST
- Staircases and internal finishing work at RO Building
- Construction of Sludge thickener, Post Treatment Building (PTB)
- Internal finishing work for On-Site Chlorine Generation Building (OSCG Bldg) and CO2 Tank Area
- Manhole construction and Glass Reinforced Plastics (GRP) pipe installation
- Design for Manufacturing and Assembly (DfMA) installation at PWST South side and RO Building North side
- Installation of louvre, metal doors and timber doors in Main Electrical & Central Chiller Plant Building (MECCP)
- Construction of parapet and internal finishes at G/F, 1/F and 2/F at Administration Building
- Installation of hoarding on 2/F at Administration Building
- Construction of stair tower and Steel fixing works for segment 6 and segment 4 at Inspection corridor
- Water proofing work on roof of Cartridge Filter Plant Room and Construction of kiosk and installation of louvre at ActiDAFF
- Water proofing work on roof at Chemical Building
- Install marine outfall structure, concreting, GRP Pipe installation, Dredging for diffuser at Outfall Shaft
- Leveling of formation level & install marine intake structure at Intake Shaft
- Permanent structure construction from +4.9mPD to +15.3mPD at Combined Shaft
- Permanent structure Wall construction from +6.8 to 14.3mPD at Pump room
- Excavation at slope toe and access erection, mini piles construction
- Trench excavation and structure installation, Grouting and Backfill at Open Channel
- E&M works - ActiDAFF (cell 1, 3, 5, 6, 7) - Scaffolding, installation of mechanical equipment and piping
- E&M works - RO building - Installation of building services, electrical switchboard, Installation of mechanical equipment, steel pipe, GRP pipe, Lifting of electrical switchboard
- E&M works - MECCP - Installation of chillers, building services, electrical switchboard
- E&M works - PWST - Installation of building services, Installation of mechanical equipment, steel pipe
- E&M works - PTB - Installation of building services, Lifting of lime silo, filter press
- E&M works - Administration Building - Installation of building services
- E&M works - Chemical Building - Installation of building services, Lifting of steel tanks
A6. The major environmental impacts brought by the above construction works include:
- Construction dust and noise generation from construction works, excavation works, rock cutting works and pipe piling driving works
- Waste generation from the construction activities; and
- Impact on water quality from marine construction works and inland construction works.
A7. The key environmental mitigation measures implemented for the Contract 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 regular 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 and marine areas before discharge.
Summary of exceedance & investigation & follow-up
A8. 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 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. Twenty-one (21) of the general water quality monitoring results of suspended solids (SS) obtained had exceeded the Action Level. Eleven (11) of the general water quality monitoring results of SS obtained during the reporting period had exceeded the Limit Level.
A11. Investigation on the reason of exceedance has been carried out, where the exceedances of SS on 2, 4, 6, 9, 11, 15 and 30 August 2022 were concluded to be unrelated to the Contract as detailed in the Incident Reports on Action Level or Limit Level Non- compliance along with supporting materials in Appendix O.
A12. In this reporting period, 54 times of landfill gas monitoring was conducted at Wan Po Road (Ch1+513 - Ch1+625). No action and limit level exceedance was recorded in the reporting period.
A13. Joint site inspections of the construction work by ET and IEC were carried out on 2, 9, 16, 23 and 31 August 2022 to audit the mitigation measures implementation status. Recommendations were recorded in the site inspection checklists and provided to the contractors together with the appropriate follow-up actions where necessary.
Complaint Handling and Prosecution
A14. No environmental complaint, notification of summons and prosecution was received in the reporting period.
Reporting Change
A15. There was no change to be reported that may affect the on-going EM&A programme.
Summary of Upcoming Key Issues and Key Mitigation Measures
A16. Key activities anticipated in the next reporting period for the Contract will include the followings:
- 132 kV Underground utility (UU) and temporary emergency vehicular access (eva) construction work at Zone C
- UU Construction Work at ActiDAFF, Reverse Osmosis (RO) Building, Chemical Building and Product Water Storage Tank (PWST)
- Carbon steel pipe installation Work at PWST
- Staircases and internal finishing work at RO Building
- Construction of Sludge thickener, Post Treatment Building (PTB)
- Internal finishing work for On-Site Chlorine Generation Building (OSCG Bldg) and CO2 Tank Area
- Manhole construction and Glass Reinforced Plastics (GRP) pipe installation
- Design for Manufacturing and Assembly (DfMA) installation at PWST South side and RO Building North side
- Installation of louvre, metal doors and timber doors in Main Electrical & Central Chiller Plant Building (MECCP)
- Construction of parapet and internal finishes at G/F, 1/F, and 2/F at Administration Building
- Installation of hoarding on 2/F at Administration Building
- Construction of stair tower and Steel fixing works for segment 6 and segment 4 at Inspection corridor
- Water proofing work on roof of Cartridge Filter Plant Room and Construction of kiosk and installation of louvre at ActiDAFF
- Water proofing work on roof at Chemical Building
- Install marine outfall structure, concreting, GRP Pipe installation, Dredging for diffuser at Outfall Shaft
- Leveling of formation level & install marine intake structure at Intake Shaft
- Permanent structure construction from +4.9mPD to +15.3mPD at Combined Shaft
- Permanent structure Wall construction from +6.8 to 14.3mPD at Pump room
- Excavation at slope toe and access erection, mini piles construction
- Trench excavation and structure installation, Grouting and Backfill at Open Channel
- E&M works - ActiDAFF (cell 1, 3, 5, 6, 7) - Scaffolding, installation of mechanical equipment and piping
- E&M works - RO building - Installation of building services, electrical switchboard, Installation of mechanical equipment, steel pipe, GRP pipe, Lifting of electrical switchboard
- E&M works - MECCP - Installation of chillers, building services, electrical switchboard
- E&M works - PWST - Installation of building services, Installation of mechanical equipment, steel pipe
- E&M works - PTB - Installation of building services, Lifting of lime silo, filter press
- E&M works - Administration Building - Installation of building services
- E&M works - Chemical Building - Installation of building services, Lifting of steel tanks
A17. The major environmental impacts brought by the above construction works will include:
- Construction dust and noise generation from excavation and construction works;
- Waste generation from construction activities; and
- Impact on water quality from marine construction works and inland construction works.
A18. The key environmental mitigation measures for the Contract in the coming reporting period associated with the above construction works will include:
- Reduction of noise from equipment and machinery on-site;
- Dust suppression by regular wetting and water spraying for construction works and at main haul road;
- 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 and marine areas before discharge.
1.
Basic Contract Information
Background
1.1. The Acciona Agua, S.A. Trading, Jardine Engineering Corporation, Limited and China State Construction Engineering (Hong Kong) Limited 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).
1.2. 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.
1.3. 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.
The Reporting Scope
1.4. This is the 30th Monthly EM&A Report for the Contract which summarizes the key findings of the EM&A programme during the reporting period from 1 August to 31 August 2022.
Contract Organization
1.5. The Contract Organization structure for Construction Phase is presented in Figure 1.1.
Figure 1.1 Contract
Organization Chart
1.6. 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. |
|
Contract Proponent (Water Supplies Department) |
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 |
Summary of Construction Works
1.7. Details of the major construction activities undertaken in this reporting period are shown as below. The construction programme is presented in Appendix A.
1.8. Key activities carried out in this reporting period for the Contract included the followings:
u 132 kV Underground utility (UU) and temporary emergency vehicular access (eva) construction work at Zone C
u UU Construction Work at ActiDAFF, Reverse Osmosis (RO) Building, Chemical Building and Product Water Storage Tank (PWST)
u Carbon steel pipe installation Work at PWST
u Staircases and internal finishing work at RO Building
u Construction of Sludge thickener, Post Treatment Building (PTB)
u Internal finishing work for On-Site Chlorine Generation Building (OSCG Bldg) and CO2 Tank Area
u Manhole construction and Glass Reinforced Plastics (GRP) pipe installation
u Design for Manufacturing and Assembly (DfMA) installation at PWST South side and RO Building North side
u Installation of louvre, metal doors and timber doors in Main Electrical & Central Chiller Plant Building (MECCP)
u Construction of parapet and internal finishes at G/F, 1/F and 2/F at Administration Building
u Installation of hoarding on 2/F at Administration Building
u Construction of stair tower and Steel fixing works for segment 6 and segment 4 at Inspection corridor
u Water proofing work on roof of Cartridge Filter Plant Room and Construction of kiosk and installation of louvre at ActiDAFF
u Water proofing work on roof at Chemical Building
u Install marine outfall structure, concreting, GRP Pipe installation, Dredging for diffuser at Outfall Shaft
u Leveling of formation level & install marine intake structure at Intake Shaft
u Permanent structure construction from +4.9mPD to +15.3mPD at Combined Shaft
u Permanent structure Wall construction from +6.8 to 14.3mPD at Pump room
u Excavation at slope toe and access erection, mini piles construction
u Trench excavation and structure installation, Grouting and Backfill at Open Channel
u E&M works - ActiDAFF (cell 1, 3, 5, 6, 7) - Scaffolding, installation of mechanical equipment and piping
u E&M works - RO building - Installation of building services, electrical switchboard, Installation of mechanical equipment, steel pipe, GRP pipe, Lifting of electrical switchboard
u E&M works - MECCP - Installation of chillers, building services, electrical switchboard
u E&M works - PWST - Installation of building services, Installation of mechanical equipment, steel pipe
u E&M works - PTB - Installation of building services, Lifting of lime silo, filter press
u E&M works - Administration Building - Installation of building services
u E&M works - Chemical Building - Installation of building services, Lifting of steel tanks
1.9. A summary of the valid permits, licences, and/or notifications on environmental protection for this Contract 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 |
- |
|
|
Permit/ Licences |
Valid Period |
Status |
Remark |
|
|
From |
To |
|||
|
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 |
- |
1.10. 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 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 |
|
Landfill Gas |
|
|
Regular Monitoring when Construction Works are within the 250m Consultation Zone |
In this reporting period, 54 times of landfill gas monitoring was conducted at Wan Po Road (Ch1+513 - Ch1+625). |
|
Environmental Audit |
|
|
Site Inspection covering Measures of Air Quality, Noise Impact, Water Quality, Waste, Ecological Quality, Fisheries, Landscape and Visual |
On-going |
1.11. 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.
1.12. 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
Monitoring Requirements
2.1. 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. In accordance with the EM&A Manual, baseline noise level at the noise monitoring stations were established as presented in the Baseline Monitoring Report. Impact noise monitoring will be conducted once per week in the form of 30-minutes measurements Leq, L10 and L90 levels recorded at each monitoring station between 0700 and 1900 on normal weekdays.
2.3. Referring to EM&A manual Section 4.1.2, the impact noise monitoring should be carried out at all the designated monitoring stations when there are contract-related construction activities undertaken within a radius of 300m from the monitoring stations.
2.4. No impact monitoring for noise impact was conducted in the reporting month due to the overly distant monitoring station from the works location, where they were farther than 1 km from the closest monitoring station NSR4 to the works location.
2.5. Impact noise monitoring will be conducted weekly in the reporting period between 0700- 1900 on normal weekdays. Construction works would follow stipulations of the valid Construction Noise Permits if works had to be conducted during restricted hours or public holidays.
2.6. 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 2.1 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 |
Monitoring Locations
2.7. 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) should be made to the free-field measurements.
2.8. 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 |
2.9. 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 |
Impact Monitoring Methodology
2.10. Integrated sound level meter was used for the noise monitoring. The meter was in compliance with the International Electrotechnical Commission Publications 651: 1979 (Type 1) and 804: 1985 (Type 1) specifications. Immediately prior to and following each noise measurement the accuracy of the sound level meter was checked using an acoustic calibrator generating a known sound pressure level at a known frequency. Measurements was accepted as valid only if the calibration levels before and after the noise measurements agree to within 1.0 dB(A). Calibration certificates of the instruments used to be shown at Appendix F are intentionally left blank since no impact monitoring equipment was used in the reporting month.
2.11. Noise measurements were not made in the presence of fog, rain, wind with a steady speed exceeding 5 m/s or wind with gusts exceeding 10 m/s. The wind speed shall be checked with a portable wind speed meter capable of measuring the wind speed in m/s.
Action and Limit Levels
2.12. 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 |
Note:
Limits
specified
in
the
GW-TM
and
IND-TM
for
construction
and
operation
noise,
respectively.
2.13. 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.
Monitoring Results and Observations
2.14. 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
3.1. 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 will be required 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. The water quality monitoring programme will be carried out to allow any deteriorating water quality to be readily detected and timely action taken to rectify the situation. The status and locations of water quality sensitive receivers and the marine works location may change after issuing this Document. If required, the ET in consultation with IEC will propose updated monitoring locations and seek approval from EPD.
3.2. Water quality monitoring for the Contract
