CONTENTS
1.4 Contact Information for the Project
1.5 Summary of Construction Activities
1.6 Summary of EM&A Programme Requirements
2....... Summary of EM&A Results
2.1 Environmental Site Inspection
2.3 Marine Water Quality Monitoring
2.3.2 Action and Limit Levels for Marine Water Quality Monitoring
2.4 Marine Water Quality Monitoring for Hydrotesting for the Subsea Gas Pipelines
2.5 Marine Mammal Exclusion Zone Monitoring
2.6 Records of Operating Speeds and Marine Travel Routes of Working Vessels
2.7 Implementation Status of Environmental Mitigation Measures
2.8 Summary of Exceedances of the Environmental Quality Performance Limit
2.9 Summary of Environmental Complaints, Notification of Summons and Successful Prosecutions
3....... Conclusion and recommendations
Annexes
Annex B Construction Programme
Annex C Environmental Mitigation Implementation Schedule (EMIS)
Annex D Status of Statutory Environmental Requirements
Annex F Graphical Presentations of Construction Phase Marine Water Quality Monitoring Results
List of Tables
Table 1.1 Contact Information of Key Personnel
Table 1.2 Contact Information for the Project
Table 1.3 Major Construction Activities Undertaken in the Reporting Period
Table 1.4 Summary of Status for the EM&A Programme under the Updated EM&A Manual
Table 2.1 Key Observations from Site Inspections and Contractor’s Follow-up Actions
Table 2.2 Quantities of Waste Generated for FEP-01/558/2018/A
Table 2.3 Quantities of Waste and Marine Sediment Generated for FEP-02/558/2018/A
Table 2.4 Quantities of Waste and Marine Sediment Generated for FEP-03/558/2018/B
Table 2.5 Location of Marine Water Quality Monitoring Stations
Table 2.6 Action and Limit Levels for Marine Water Quality Monitoring
Table 2.7 Location of Water Quality Monitoring Station for Hydrotesting for the Subsea Gas Pipelines
Table 2.8 Action and Limit Levels for Marine Water Quality Monitoring
Table 2.9 Marine Mammal Exclusion Zone Requirements
Table 2.10 Monitoring Results for Marine Mammal Exclusion Zone Monitoring
List of Figures
Figure 1.1 Indicative Location of Key Project Components
Figure 1.2 Location and Works Area of GRS at BPPS
Figure 1.3 Location and Works Area of GRS at LPS
Figure 2.1 Marine Water Quality Monitoring Location
Figure 2.2 Water Quality Monitoring Locations for Hydrotesting for the Subsea Gas Pipelines
To support the increased use of natural gas in Hong Kong from 2020 onwards, Castle Peak Power Company Limited (CAPCO) and The Hongkong Electric Co., Ltd. (HK Electric) have identified that the development of an offshore liquefied natural gas (LNG) receiving terminal in Hong Kong using Floating Storage and Regasification Unit (FSRU) technology (‘the Project’) presents a viable additional gas supply option that will provide energy security through access to competitive gas supplies from world markets. The Project will involve the construction and operation of an offshore LNG import facility to be located in the southern waters of Hong Kong, a double berth jetty, and subsea pipelines that connect to the gas receiving stations (GRS) at the Black Point Power Station (BPPS) and the Lamma Power Station (LPS). To demarcate the works between different parties, the following Further Environmental Permits (FEPs) were issued for the Project:
§ the double berth jetty at LNG Terminal under the Hong Kong LNG Terminal Limited (HKLTL), joint venture between CAPCO and HK Electric (FEP-01/558/2018/A) – construction commenced on 27 November 2020;
§ the subsea gas pipeline for the BPPS and the associated GRS in the BPPS under CAPCO (FEP-03/558/2018/B) – construction commenced on 23 September 2020; and
§ the subsea gas pipeline for the LPS and the associated GRS in the LPS under HK Electric (FEP-02/558/2018/A) – construction commenced on 13 December 2020.
This is the Quarterly EM&A Summary Report presenting the EM&A works carried out during the period from 1 July to 30 September 2022 for the Project in accordance with the Updated EM&A Manual. A summary of monitoring and audit activities conducted in the reporting period is listed below:
|
Activities |
Number of Sessions |
|
For FEP-01/558/2018/A |
|
|
Environmental Site Inspection |
5 |
|
For FEP-02/558/2018/A |
|
|
Environmental Site Inspection |
4 |
|
Marine Water Quality Monitoring for Hydrotesting for the LPS Pipeline |
8 |
|
For FEP-03/558/2018/B |
|
|
Marine Water Quality Monitoring |
2 |
|
Marine Mammal Exclusion Zone Monitoring |
During jetting operation for construction of BPPS Pipeline |
|
Environmental Site Inspection |
6 |
|
Marine Water Quality Monitoring for Hydrotesting for the BPPS Pipeline |
3 |
Environmental auditing works, including regular site inspections of construction works conducted by the ET, audit of implementation of Waste Management Plan, and review of the acceptability of operating speeds and marine travel routes of working vessels, including checking of compliance with the approval conditions given by the Director of Environmental Protection for the entry of working vessels within marine parks, in pursuant to Condition 3.1 of FEP-01/558/2018/A, Condition 3.4 of FEP-02/558/2018/A and Condition 3.4 of FEP-03/558/2018/B, were conducted in the reporting period, as appropriate. No non-compliance of environmental statutory requirements was identified.
Breaches of Action and Limit Levels
There were no Project-related Action and Limit Level exceedances for marine water quality monitoring for jetting operations as well as marine water quality monitoring for hydrotesting for the BPPS Pipeline and LPS Pipeline in the reporting period.
Since construction phase marine mammal monitoring was completed in November 2021, there were no breaches of Action and Limit Levels for marine mammal monitoring in the reporting period.
Environmental Complaints, Notification of Summons and Successful Prosecution
There was one environmental complaint received on the alleged dumping of waste into sea between Shek Kwu Chau and Tai A Chau in the reporting period. Upon investigation, no construction & demolition (C&D) waste was generated from the Project in the past two weeks upon receipt of complaint (i.e. between 7 and 21 September 2022). There is no evidence showing any unacceptable waste management practice for the Project. Environmental protection / mitigation measures were observed to be implemented properly in accordance with the Implementation Schedule as well as the environmental requirements under the Further Environmental Permits and the approved EIA report (Register No.: AEIAR-218/2018). The complaint is thus considered invalid.
There were no notification of summons and successful prosecutions recorded in the reporting period.
Reporting Changes
There were no reporting changes in the reporting period.
Comments, Recommendations and Conclusions for the Quarter
The recommended environmental mitigation measures for the Project were effectively implemented and the EM&A programme undertaken by the ET has effectively monitored the construction activities as well as ensured proper implementation of mitigation measures in the reporting period.
To support the increased use of natural gas in Hong Kong from 2020 onwards, Castle Peak Power Company Limited (CAPCO) and The Hongkong Electric Co., Ltd. (HK Electric) have identified that the development of an offshore liquefied natural gas (LNG) receiving terminal in Hong Kong using Floating Storage and Regasification Unit (FSRU) technology (‘the Project’) presents a viable additional gas supply option that will provide energy security through access to competitive gas supplies from world markets. The Project will involve the construction and operation of an offshore LNG import facility to be located in the southern waters of Hong Kong, a double berth jetty, and subsea pipelines that connect to the gas receiving stations (GRS) at the Black Point Power Station (BPPS) and the Lamma Power Station (LPS).
The Environmental Impact Assessment (EIA) Report for the Project was submitted to the Environmental Protection Department (EPD) of the HKSAR Government in May 2018. The EIA Report (EIAO Register No. AEIAR-218/2018) was approved by EPD and the associated Environmental Permit (EP) (EP-558/2018) was issued in October 2018.
An application for Further Environmental Permits (FEPs) were made on 24 December 2019 to demarcate the works between the different parties. The following FEPs were issued on 17 January 2020 and the EP under EP-558/2018 was surrendered on 5 March 2020.
§ the double berth jetty at LNG Terminal under the Hong Kong LNG Terminal Limited (HKLTL), joint venture between CAPCO and HK Electric (FEP-01/558/2018/A) ([1]) – construction commenced on 27 November 2020;
§ the subsea gas pipeline for the BPPS and the associated GRS in the BPPS under CAPCO (FEP-03/558/2018/B) ([2]) – construction commenced on 23 September 2020; and
§ the subsea gas pipeline for the LPS and the associated GRS in the LPS under HK Electric (FEP-02/558/2018/A) ([3]) – construction commenced on 13 December 2020.
The location of these components is shown in Figures 1.1, 1.2 and 1.3.
This is the Quarterly EM&A Summary Report for the Project which summarises the key findings of the EM&A programme during the reporting period from 1 July to 30 September 2022 for the construction works for the Project in accordance with the Updated EM&A Manual and the requirements of the Further Environmental Permits (FEP-01/558/2018/A, FEP-02/558/2018/A & FEP-03/558/2018/B).
The organisation structure of the Project is shown in Annex A. The key personnel and contact details are summarised in Table 1.1 below.
Table 1.1 Contact Information of Key Personnel
|
Party |
Position |
Name |
Telephone |
|
CAPCO / HKLTL (For FEP-01/558/2018/A and FEP-03/558/2018/B)
|
Senior Environmental Manager |
Karen Lui |
2678 8282 |
|
HK Electric / HKLTL (For FEP-01/558/2018/A and FEP-02/558/2018/A)
|
Head of Mechanical Engineering, Projects Division
|
Norman Chan
|
3143 3819
|
|
Environmental Team (ET) (ERM-Hong Kong, Limited)
|
ET Leader
|
Raymond Chow
|
2271 3281 |
|
Independent Environmental Checker (IEC) (Mott MacDonald Hong Kong Limited)
|
IEC |
Lydia Chak |
2585 8473 |
|
Contractor (CNOOC Offshore Oil Engineering Co. Ltd.) |
Environmental Manager |
H Y Tang |
6111 5789
|
|
Environmental Officer |
Kelvin Cheung |
9060 1020 |
|
|
|
|||
The contact information for the Project is provided in Table 1.2. The public can contact the project proponents through the following channel for any enquiries and comments on the environmental monitoring data and related information of the Project.
Table 1.2 Contact Information for the Project
|
Channel |
Contact Information |
|
|
The programme of the construction is shown in Annex B.
As informed by the Contractor, details of the major construction activities undertaken in the reporting period are listed in Table 1.3 below:
Table 1.3 Major Construction Activities Undertaken in the Reporting Period
|
FEP |
Land-based Works |
Marine-based Works |
|
FEP-01/558/2018/A |
§ Topside installation works § Piping installation works § System commissioning |
§ Nil |
|
FEP-02/558/2018/A |
§ Nil |
§ Rock armour placement § Final hydrotest |
|
FEP-03/558/2018/B |
§ Piping installation works § Backfilling § System commissioning |
§ Post-trenching § Rock armour placement § Final hydrotest |
The status of EM&A Programme for all environmental aspects required under the Updated EM&A Manual are presented in Table 1.4. The requirements of relevant environmental monitoring, including monitoring parameters, Action and Limit Levels, Event and Action Plan(s), environmental mitigation measures, etc. are presented in Section 2.
Table 1.4 Summary of Status for the EM&A Programme under the Updated EM&A Manual
|
Aspects |
Relevant FEP(s) |
Status |
|
Water Quality |
||
|
Baseline Monitoring |
FEP-01/558/2018/A FEP-02/558/2018/A FEP-03/558/2018/B |
§ Completed |
|
Efficiency of Silt Curtain System |
FEP-02/558/2018/A FEP-03/558/2018/B |
§ Completed for cage-type silt curtain for dredging operation (under FEP-02/558/2018/A and FEP-03/558/2018/B) § Completed for cage-type silt curtain for jetting operation (under FEP-02/558/2018/A and FEP-03/558/2018/B) § Completed for floating silt curtain for jetting operation (under FEP-02/558/2018/A and FEP-03/558/2018/B) |
|
Construction Phase Monitoring |
FEP-02/558/2018/A FEP-03/558/2018/B |
§ Completed for FEP-02/558/2018/A and FEP-03/558/2018/B |
|
Post-Construction Monitoring |
FEP-02/558/2018/A FEP-03/558/2018/B |
§ To be implemented upon completion of construction works for the Project |
|
Monitoring for Hydrotesting for the Subsea Gas Pipelines |
FEP-02/558/2018/A FEP-03/558/2018/B |
§ On-going for FEP-02/558/2018/A and FEP-03/558/2018/B |
|
First-year of LNG Terminal Operation |
FEP-01/558/2018/A |
§ To be implemented during LNG Terminal operation |
|
Maintenance Dredging |
FEP-01/558/2018/A |
§ To be implemented during maintenance dredging |
|
Waste Management |
||
|
Audit of Waste Management Practice |
FEP-01/558/2018/A FEP-02/558/2018/A FEP-03/558/2018/B |
§ On-going |
|
Ecology |
||
|
Baseline Monitoring (Vessel-based Line Transect Survey and Passive Acoustic Monitoring) |
FEP-01/558/2018/A
|
§ Completed |
|
Construction Phase Monitoring (Vessel-based Line Transect Survey and Passive Acoustic Monitoring) |
FEP-01/558/2018/A |
§ Completed |
|
Post-Construction Monitoring (Vessel-based Line Transect Survey and Passive Acoustic Monitoring) |
FEP-01/558/2018/A |
§ To be conducted during post-construction phase |
|
Marine Mammal Exclusion Zone Monitoring |
FEP-01/558/2018/A FEP-02/558/2018/A FEP-03/558/2018/B |
§ Completed for FEP-01/558/2018/A (marine mammal exclusion zone with 500m radius) and FEP-02/558/2018/A and FEP-03/558/2018/B (marine mammal exclusion zone with 250m radius) |
|
Environmental Site Inspection |
||
|
Regular Site Inspection |
FEP-01/558/2018/A FEP-02/558/2018/A FEP-03/558/2018/B |
§ On-going |
|
Records of Operating Speeds and Marine Travel Routes for Working Vessels |
FEP-01/558/2018/A FEP-02/558/2018/A FEP-03/558/2018/B |
§ On-going |
|
Environmental Log Book |
FEP-01/558/2018/A FEP-02/558/2018/A FEP-03/558/2018/B |
§ On-going
|
The environmental licenses and permits, including further environmental permits, registration as chemical waste producer, construction noise permits, wastewater discharge license, marine dumping permits, etc., which were valid in the reporting period. No non-compliance with environmental statutory requirements, including FEP conditions (status of submission) under the EIA Ordinance was identified. The status of statutory environmental requirements is presented in Annex D.
The potential environmental impacts arising from the major construction activities undertaken in the reporting period provided in Table 1.3 were mainly associated with dust emission from construction activities and stockpiles, waste management, site surface runoff, wastewater discharge, and elevation in suspended solids and disturbance to marine mammals due to marine-based works. There were no Project-related Action and Limit Level exceedances and no non-compliance of environmental statutory requirements identified for the environmental monitoring and auditing works conducted in the reporting period, including regular site inspections of construction works conducted by the ET, audit of implementation of Waste Management Plan, review of the acceptability of operating speeds and marine travel routes of working vessels, and checking of compliance with the approval conditions given by EPD for allowing the entry of working vessels within marine parks in pursuant to Condition 3.1 of FEP-01/558/2018/A, Condition 3.4 of FEP-02/558/2018/A and Condition 3.4 of FEP-03/558/2018/B, as appropriate. The recommended environmental mitigation measures were properly implemented in the reporting period. Excessive variation between the EIA study predictions and the EM&A monitoring results was not found and therefore no investigation and follow-up procedures were considered necessary.
The environmental mitigation
implementation schedule (EMIS) is presented in Annex C.
The EM&A programme for the Project required environmental monitoring for marine water quality and marine mammals as well as environmental site inspections for air quality, construction noise, water quality, waste management, marine ecology, landscape and visual, and hazard to life impacts. As presented in Section 1.6, environmental site inspections, audit on waste management practice, marine water quality monitoring and marine mammal exclusion zone monitoring were conducted during the reporting period, and the findings are presented below.
Regular environmental site inspections were carried out with the Contractor and Project Proponents to confirm the implementation of appropriate environmental protection and pollution control mitigation measures for air quality, construction noise, water quality, waste management, marine ecology, landscape and visual, and hazard to life impacts under the Project. In the reporting period, 15 environmental site inspections were carried out on 7, 13, 20, 28 July, 3, 11, 17, 26 August, 1, 7, 14 and 29 September 2022. The Independent Environmental Checker (IEC) attended the environmental site inspections as the IEC audits on 7, 13, 20, 28 July, 3, 11, 17 August, 7 and 29 September 2022 during the reporting period ([4]). The key observations from site inspections and Contractor’s follow-up actions are summarized in Table 2.1. The environmental mitigation implementation schedule (EMIS) is presented in Annex C.
Table 2.1 Key Observations from Site Inspections and Contractor’s Follow-up Actions
|
Item |
Description |
Contractor’s Follow-up Action(s) Taken |
|
FEP-01/558/2018/A |
||
|
July - September 2022 |
||
|
1 |
Emission of dark smoke from the exhausts of working vessel, Qi Ye 6, was observed. The Contractor was reminded to maintain all plants and/or equipment in a good condition |
Maintenance was conducted and no dark smoke was observed after maintenance work. |
|
FEP-02/558/2018/A |
||
|
July - September 2022 |
||
|
2 |
Emission of dark smoke from the exhausts of working vessel, Jin Xin 708, was observed. The Contractor was reminded to maintain all plants and/or equipment in a good condition. |
Maintenance was conducted and no dark smoke was observed after maintenance work. |
|
FEP-03/558/2018/B |
||
|
July - September 2022 |
||
|
- |
Nil |
N/A |
Waste management audits were performed with reference to the Waste Management Checklists for the corresponding Waste Management Plans detailed in Annex E of the associated Monthly EM&A Reports during the regular environmental site inspections carried out in the reporting period. No non-compliance for Contractor’s waste management practices was identified during the audits.
The quantities of different types of waste and marine sediment generated for the three FEPs are summarised in Tables 2.2, 2.3 and 2.4 with reference to the waste flow tables prepared by the Contractor. General refuse was generated under FEP-01/558/2018/A and FEP-03/558/2018/B, and inert C&D materials (public fill) were also generated under FEP-03/558/2018/B in the reporting period. Detailed waste flow tables can be referred to Annex F of the associated Monthly EM&A Reports for the reporting period.
Table 2.2 Quantities of Waste Generated for FEP-01/558/2018/A
|
Inert C&D Materials Generated (in ‘000kg) |
|||||||||||
|
Month/Year |
Total Quantity Generated |
Hard Rock and Large Broken Concrete |
Reused in the Contract |
Reused in other Projects |
Disposed as Public Fill |
Imported Fill |
|||||
|
Jul 2022 |
0 |
0 |
0 |
0 |
0 |
0 |
|||||
|
Aug 2022 |
0 |
0 |
0 |
0 |
0 |
0 |
|||||
|
Sep 2022 |
0 |
0 |
0 |
0 |
0 |
0 |
|||||
|
C&D Wastes Generated |
|||||||||||
|
Month/Year |
Metals (in ‘000kg3) |
Paper / Cardboard Packaging (in ‘000kg3) |
Plastics (in ‘000kg3) |
Chemical Waste |
Other (e.g. general refuse) (in ‘000kg) |
|
|||||
|
(in ‘000kg3) |
(in ‘000L) |
|
|||||||||
|
Jul 2022 |
0 |
0 |
0 |
0 |
0 |
35.99 |
|
||||
|
Aug 2022 |
0 |
0 |
0 |
0 |
0 |
23.03 |
|
||||
|
Sep 2022 |
0 |
0 |
0 |
0 |
0 |
32.67 |
|
||||
Table 2.3 Quantities of Waste and Marine Sediment Generated for FEP-02/558/2018/A
|
Inert C&D Materials Generated (in ‘000kg) |
|
|||||||||||||||||
|
Month/Year |
Total Quantity Generated |
Hard Rock and Large Broken Concrete |
Reused in the Contract |
Reused in other Projects |
Disposed as Public Fill |
Imported Fill |
||||||||||||
|
Jul 2022 |
0 |
0 |
0 |
0 |
0 |
0 |
||||||||||||
|
Aug 2022 |
0 |
0 |
0 |
0 |
0 |
0 |
||||||||||||
|
Sep 2022 |
0 |
0 |
0 |
0 |
0 |
0 |
||||||||||||
|
C&D Wastes Generated |
|
|||||||||||||||||
|
Month/Year |
Metals (in ‘000kg3) |
Paper / Cardboard Packaging (in ‘000kg3) |
Plastics (in ‘000kg3) |
Chemical Waste |
Other (e.g. general refuse) (in ‘000kg) |
|
||||||||||||
|
(in ‘000kg3) |
(in ‘000L) |
|
||||||||||||||||
|
Jul 2022 |
0 |
0 |
0 |
0 |
0 |
0 |
|
|||||||||||
|
Aug 2022 |
0 |
0 |
0 |
0 |
0 |
0 |
|
|||||||||||
|
Sep 2022 |
0 |
0 |
0 |
0 |
0 |
0 |
|
|||||||||||
|
Marine Sediment Generated (in ‘000m3) |
|
|||||||||||||||||
|
Month/Year |
Total Quantity of Type L Generated |
Total Quantity of Type M Generated |
Reused in the Contract |
Reused in other Projects |
Open Sea Disposal |
|||||||||||||
|
Jul 2022 |
0 |
0 |
0 |
0 |
0 |
|||||||||||||
|
Aug 2022 |
0 |
0 |
0 |
0 |
0 |
|||||||||||||
|
Sep 2022 |
0 |
0 |
0 |
0 |
0 |
|||||||||||||
Table 2.4 Quantities of Waste and Marine Sediment Generated for FEP-03/558/2018/B
|
Inert C&D Materials Generated (in ‘000kg) |
|
||||||||||||||||||
|
Month/Year |
Total Quantity Generated |
Hard Rock and Large Broken Concrete |
Reused in the Contract |
Reused in other Projects |
Disposed as Public Fill |
Imported Fill |
|||||||||||||
|
Jul 2022 |
132.54 |
0 |
0 |
0 |
132.54 |
0 |
|||||||||||||
|
Aug 2022 |
73.31 |
0 |
0 |
0 |
73.31 |
0 |
|||||||||||||
|
Sep 2022 |
0 |
0 |
0 |
0 |
0 |
0 |
|||||||||||||
|
C&D Wastes Generated |
|
||||||||||||||||||
|
Month/Year |
Metals (in ‘000kg3) |
Paper / Cardboard Packaging (in ‘000kg3) |
Plastics (in ‘000kg3) |
Chemical Waste |
Other (e.g. general refuse) (in ‘000kg) |
|
|||||||||||||
|
(in ‘000kg3) |
(in ‘000L) |
|
|||||||||||||||||
|
Jul 2022 |
0 |
0 |
0 |
0 |
0 |
10.60 |
|
||||||||||||
|
Aug 2022 |
0 |
0 |
0 |
0 |
0 |
13.10 |
|
||||||||||||
|
Sep 2022 |
0 |
0 |
0 |
0 |
0 |
9.05 |
|
||||||||||||
|
Marine Sediment Generated (in ‘000m3) |
|
||||||||||||||||||
|
Month/Year |
Total Quantity of Type L Generated |
Total Quantity of Type M Generated |
Reused in the Contract |
Reused in other Projects |
Open Sea Disposal |
|
|||||||||||||
|
Jul 2022 |
0 |
0 |
0 |
0 |
0 |
|
|||||||||||||
|
Aug 2022 |
0 |
0 |
0 |
0 |
0 |
|
|||||||||||||
|
Sep 2022 |
0 |
0 |
0 |
0 |
0 |
|
|||||||||||||
In accordance with the Updated EM&A Manual, marine water quality monitoring shall be undertaken at the monitoring stations as shown in Figure 2.1 and Table 2.5 three times a week at both mid-ebb and mid-flood tides during periods when there are dredging / jetting operations during construction phase of BPPS Pipeline or LPS Pipeline. The interval between two sets of monitoring would not be less than 36 hours. Two replicates of in-situ measurements and samples were collected at each monitored water depth of each monitoring stations. Levels of dissolved oxygen (DO), pH value, salinity, temperature and turbidity were measured in-situ whereas the level of suspended solids (SS) were determined by a HOKLAS accredited laboratory. The detailed methodology is presented in the Updated EM&A Manual.
Table 2.5 Location of Marine Water Quality Monitoring Stations
|
Station |
Easting |
Northing |
Description |
|
Group 1 – During construction at the pipeline shore approach at LPS (KP17.4 - 18.2), West Lamma Channel (KP14.5 - 17.4) |
|||
|
IM1 |
829453 |
806896 |
Impact Station for Coastline of South Lamma |
|
IM2 |
828235 |
810347 |
Impact Station for Coastline of North Lamma |
|
E1 |
827317 |
811510 |
Control Station for Ebb Tide |
|
F1 |
827892 |
804243 |
Control Station for Flood Tide |
|
Group 2 – During construction at the Double Berth Jetty to West Lamma Channel (KP0.0 - 14.5) |
|||
|
IM3 |
820683 |
805931 |
Impact Station for Coastline of South Cheung Chau |
|
IM4 |
816997 |
805153 |
Impact Station for Coastline of South Shek Kwu Chau |
|
IM5 |
814068 |
804100 |
Boundary of Proposed South Lantau Marine Park (MP) |
|
IM6 |
814073 |
802029 |
Boundary of Proposed South Lantau MP |
|
E2 |
813367 |
808213 |
Control Station for Ebb Tide |
|
F2 |
822532 |
802161 |
Control Station for Flood Tide |
|
F3 |
815032 |
801161 |
Control Station for Flood Tide |
|
Group 3 – During construction at the Jetty Approach (KP0.0 - 5.0), South of Soko Islands (KP5.0 - 8.9), Southwest of Soko Islands (KP8.9 - 12.1) |
|||
|
IM6 |
814073 |
802029 |
Boundary of Proposed South Lantau MP |
|
IM7 |
811652 |
802029 |
Boundary of Proposed South Lantau MP |
|
IM8 |
810833 |
801430 |
Boundary of Proposed South Lantau MP |
|
IM9 |
807101 |
801595 |
Boundary of Proposed South Lantau MP |
|
E3 |
802686 |
804123 |
Control Station for Ebb Tide |
|
F3 |
815032 |
801161 |
Control Station for Flood Tide |
|
Group 4 – During construction at the Adamasta Channel (KP12.1 - 15.6), Southwest Lantau (KP15.6 - 21.3) |
|||
|
IM10 |
803145 |
806407 |
Boundary of Southwest Lantau MP |
|
IM11A |
801914 |
806510 |
Boundary of Southwest Lantau MP |
|
IM12 |
801041 |
807024 |
Boundary of Southwest Lantau MP |
|
IM13 |
800386 |
810750 |
Boundary of Southwest Lantau MP |
|
IM14 |
801376 |
810750 |
Boundary of Southwest Lantau MP |
|
E4 |
801571 |
811923 |
Control Station for Ebb Tide |
|
F4 |
809058 |
806567 |
Control Station for Flood Tide |
|
Group 5 – During construction at the West of Tai O to West of HKIA (KP21.3 - 31.5) |
|||
|
IM15 |
804820 |
821110 |
Boundary of Sha Chau and Lung Kwu Chau MP |
|
E5 |
804634 |
822606 |
Control Station for Ebb Tide |
|
F5 |
805185 |
816591 |
Control Station for Flood Tide |
|
Group 6 – During construction at the West of HKIA to Lung Kwu Chau (KP31.5 - 37.5) |
|||
|
IM15 |
804820 |
821110 |
Boundary of Sha Chau and Lung Kwu Chau MP |
|
IM17 |
804865 |
827855 |
Boundary of Sha Chau and Lung Kwu Chau MP |
|
IM16A |
805039 |
824343 |
Coral Colonies at Pak Chau |
|
E6 |
805418 |
832113 |
Control Station for Ebb Tide |
|
F5 |
805185 |
816591 |
Control Station for Flood Tide |
|
Group 7 – During construction at the Lung Kwu Chau to Urmston Anchorage (37.5 - 41.1), Urmston Road (KP41.1 - 42.9) |
|||
|
IM17 |
804865 |
827855 |
Boundary of Sha Chau and Lung Kwu Chau MP |
|
IM18 |
806220 |
827890 |
Boundary of Sha Chau and Lung Kwu Chau MP |
|
IM19 |
807274 |
829250 |
Impact Station for Coastline of Lung Kwu Tan |
|
E6 |
805418 |
832113 |
Control Station for Ebb Tide |
|
F6 |
808812 |
824266 |
Control Station for Flood Tide |
|
E5 |
804634 |
822606 |
Control Station for Flood Tide |
|
Group 8 – During construction at the West of BPPS (KP42.9 - 44.9), Pipeline shore approach at BPPS (KP44.9 - 45.0) |
|||
|
IM19 |
807274 |
829250 |
Impact Station for Coastline of Lung Kwu Tan |
|
IM20A |
809445 |
831728 |
Impact Station for Coastline of Deep Bay |
|
IM21A |
808879 |
830900 |
Coral Colony at Artificial Seawall at BPPS |
|
IM22A |
808703 |
830717 |
Coral Colony at Artificial Seawall at BPPS |
|
E7A |
808313 |
833524 |
Control Station for Ebb Tide |
|
F6 |
808812 |
824266 |
Control Station for Flood Tide |
|
Note: Alternative monitoring stations (E7A, IM11A, IM16A, IM20A, IM21A & IM22A) were proposed by the ET in consultation with the IEC and approved by EPD in accordance with the provision in Section 5.1 and Section 5.2.5 of the Updated EM&A Manual. |
|||
The Action and Limit Levels for marine water quality monitoring have been established based on the baseline marine water quality monitoring data in accordance with the Updated EM&A Manual. Action and Limit Levels of key assessment parameters for construction phase marine water quality monitoring including DO, turbidity and SS are summarised in Table 2.6.
Table 2.6 Action and Limit Levels for Marine Water Quality Monitoring
|
Parameter |
Action Level |
Limit Level |
|
|
Group 1 – During construction at the pipeline shore approach at LPS (KP17.4 - 18.2), West Lamma Channel (KP14.5 - 17.4) |
|||
|
DO in mg L-1 a |
Surface and Middle 4.2 mg L-1
Bottom 2.4 mg L-1 |
Surface and Middle 2.9 mg L-1
Bottom 1.6 mg L-1 |
|
|
Turbidity in NTU (Depth-averaged b) c |
14.4 NTU, and 120% of the relevant control station's turbidity at the same tide of the same day |
19.9 NTU, and 130% of the relevant control station's turbidity at the same tide of the same day |
|
|
SS in mg L-1 (Depth-averaged b) c |
20.8 mg L-1, and 120% of the relevant control station's SS at the same tide of the same day |
29.6 mg L-1, and 130% of the relevant control station's SS at the same tide of the same day |
|
|
Group 2 – During construction at the Double Berth Jetty to West Lamma Channel (KP0.0 - 14.5) |
|||
|
DO in mg L-1 a |
Surface and Middle 3.4 mg L-1
Bottom 1.8 mg L-1 |
Surface and Middle 2.4 mg L-1
Bottom 1.4 mg L-1 |
|
|
Turbidity in NTU (Depth-averaged b) c |
17.1 NTU, and 120% of the relevant control station's turbidity at the same tide of the same day |
26.8 NTU, and 130% of the relevant control station's turbidity at the same tide of the same day |
|
|
SS in mg L-1 (Depth-averaged b) c |
25.7 mg L-1, and 120% of the relevant control station's SS at the same tide of the same day |
37.1 mg L-1, and 130% of the relevant control station's SS at the same tide of the same day |
|
|
Group 3 – During construction at the Jetty Approach (KP0.0 - 5.0), South of Soko Islands (KP5.0 - 8.9), Southwest of Soko Islands (KP8.9 - 12.1) |
|||
|
DO in mg L-1 a |
Surface and Middle 4.1 mg L-1
Bottom 2.7 mg L-1 |
Surface and Middle 3.0 mg L-1
Bottom 2.0 mg L-1 |
|
|
Turbidity in NTU (Depth-averaged b) c |
17.0 NTU, and 120% of the relevant control station's turbidity at the same tide of the same day |
30.9 NTU, and 130% of the relevant control station's turbidity at the same tide of the same day |
|
|
SS in mg L-1 (Depth-averaged b) c |
22.3 mg L-1, and 120% of the relevant control station's SS at the same tide of the same day |
36.9 mg L-1, and 130% of the relevant control station's SS at the same tide of the same day |
|
|
Group 4 – During construction at the Adamasta Channel (KP12.1 - 15.6), Southwest Lantau (KP15.6 - 21.3) |
|||
|
DO in mg L-1 a |
Surface and Middle 3.4 mg L-1
Bottom 2.8 mg L-1 |
Surface and Middle 2.5 mg L-1
Bottom 2.0 mg L-1 |
|
|
Turbidity in NTU (Depth-averaged b) c |
63.1 NTU, and 120% of the relevant control station's turbidity at the same tide of the same day |
165.7 NTU, and 130% of the relevant control station's turbidity at the same tide of the same day |
|
|
SS in mg L-1 (Depth-averaged b) c |
75.4 mg L-1, and 120% of the relevant control station's SS at the same tide of the same day |
121.8 mg L-1, and 130% of the relevant control station's SS at the same tide of the same day |
|
|
Group 5 – During construction at the West of Tai O to West of HKIA (KP21.3 - 31.5) |
|||
|
DO in mg L-1 a |
Surface and Middle 4.6 mg L-1
Bottom 4.0 mg L-1 |
Surface and Middle 4.0 mg L-1
Bottom 2.0 mg L-1 |
|
|
Turbidity in NTU (Depth-averaged b) c |
31.9 NTU, and 120% of the relevant control station's turbidity at the same tide of the same day |
46.6 NTU, and 130% of the relevant control station's turbidity at the same tide of the same day |
|
|
SS in mg L-1 (Depth-averaged b) c |
64.9 mg L-1, and 120% of the relevant control station's SS at the same tide of the same day |
72.5 mg L-1, and 130% of the relevant control station's SS at the same tide of the same day |
|
|
Group 6 – During construction at the West of HKIA to Lung Kwu Chau (KP31.5 - 37.5) |
|||
|
DO in mg L-1 a |
Surface and Middle 4.4 mg L-1
Bottom 3.9 mg L-1 |
Surface and Middle 3.9 mg L-1
Bottom 2.0 mg L-1 |
|
|
Turbidity in NTU (Depth-averaged b) c |
30.7 NTU, and 120% of the relevant control station's turbidity at the same tide of the same day |
47.0 NTU, and 130% of the relevant control station's turbidity at the same tide of the same day |
|
|
SS in mg L-1 (Depth-averaged b) c |
49.2 mg L-1, and 120% of the relevant control station's SS at the same tide of the same day |
74.0 mg L-1, and 130% of the relevant control station's SS at the same tide of the same day |
|
|
Group 7 – During construction at the Lung Kwu Chau to Urmston Anchorage (37.5 - 41.1), Urmston Road (KP41.1 - 42.9) |
|||
|
DO in mg L-1 a |
Surface and Middle 3.8 mg L-1
Bottom 3.1 mg L-1 |
Surface and Middle 3.4 mg L-1
Bottom 2.0 mg L-1 |
|
|
Turbidity in NTU (Depth-averaged b) c |
34.5 NTU, and 120% of the relevant control station's turbidity at the same tide of the same day |
79.2 NTU, and 130% of the relevant control station's turbidity at the same tide of the same day |
|
|
SS in mg L-1 (Depth-averaged b) c |
37.8 mg L-1, and 120% of the relevant control station's SS at the same tide of the same day |
98.2 mg L-1, and 130% of the relevant control station's SS at the same tide of the same day |
|
|
Group 8 – During construction at the West of BPPS (KP42.9 - 44.9), Pipeline shore approach at BPPS (KP44.9 - 45.0) |
|||
|
DO in mg L-1 a |
Surface and Middle 4.3 mg L-1
Bottom 3.6 mg L-1 |
Surface and Middle 3.4 mg L-1
Bottom 2.0 mg L-1 |
|
|
Turbidity in NTU (Depth-averaged b) c |
34.3 NTU, and 120% of the relevant control station's turbidity at the same tide of the same day |
58.5 NTU, and 130% of the relevant control station's turbidity at the same tide of the same day |
|
|
SS in mg L-1 (Depth-averaged b) c |
42.4 mg L-1, and 120% of the relevant control station's SS at the same tide of the same day |
78.2 mg L-1, and 130% of the relevant control station's SS at the same tide of the same day |
|
|
Notes: a. For DO, non-compliance of the water quality limits occurs when monitoring result is lower than the limits. b. “Depth-averaged” is calculated by taking the arithmetic means of reading of all three depths. c. For Turbidity and SS, non-compliance of the water quality limits occurs when monitoring result is higher than the limits. |
|||
The Event and Action Plan for marine water quality monitoring can be referred to the Updated EM&A Manual.
A total of 2 monitoring events for construction phase marine water quality monitoring were conducted for construction of BPPS Pipeline within the works area(s) for the associated marine-based activities in the reporting period. Graphical presentations are provided in Annex F. There were no Project-related Action and Limit Level exceedances for marine water quality monitoring in the reporting period.
In accordance with the Updated EM&A Manual, water quality monitoring for hydrotesting for the subsea gas pipelines will be conducted before, during and after discharge of hydrotest water for the two subsea gas pipelines at the nearest sensitive receiver (i.e. IM6) and nearby control station(s) (i.e. E2 and / or F3 depending on the tidal state) as shown in Figure 2.2 and Table 2.7. As agreed with IEC, one water quality monitoring event would be conducted within one week prior to hydrotesting discharge for each pipeline the monitoring, water quality monitoring would be conducted at a frequency of three times per week capturing the timing of hydrotesting discharge as far as practicable, and only one water quality monitoring event would be conducted after one week of completion of hydrotesting discharge for both pipeline. For a single water quality monitoring event, two rounds of measurement would be conducted during flood tide and two rounds of measurement would be conducted during ebb tide and each round of monitoring for each tide would be separated by at least an hour. Two replicates of in-situ measurements and samples would be collected at each monitored water depth of each monitoring stations. Levels of dissolved oxygen (DO), pH value, salinity, temperature and turbidity were measured in-situ.
Table 2.7 Location of Water Quality Monitoring Station for Hydrotesting for the Subsea Gas Pipelines
|
Station |
Easting |
Northing |
Description |
|
IM6 |
814073 |
802029 |
Boundary of Existing South Lantau MP |
|
F3 |
815032 |
801161 |
Control Station for Flood Tide |
|
E2 |
813367 |
808213 |
Control Station for Ebb Tide |
|
|
|||
As predicted in the water quality modelling, there would be depletion of DO due to hydrotest discharge and thus the Action and Limit Levels of DO were established. The Action and Limit Levels for marine water quality monitoring for hydrotesting for the subsea gas pipelines were established based on the baseline marine water quality monitoring data. In addition, the representativeness of the data was reviewed with reference to the water quality monitoring data obtained within one week before hydrotest discharge for the LPS and BPPS Pipelines. The water quality monitoring for hydrotesting of LPS Pipeline and BPPS Pipeline before discharge wwere conducted on 16 August 2022 and 10 September 2022, respectively and the monitoring results showed that the levels of DO ranged from 5.5-10.6 mg/L (Surface and Middle) and 4.1-6.42 mg/L (Bottom) at the monitoring stations and were within the ranges of DO obtained from the baseline marine water quality monitoring before construction of the Project. It is thus considered that the baseline marine water quality monitoring data for Group 3 where Station IM6 is located are still valid and representative for establishing the Action and Limit Levels. The Action and Limit Levels of DO are presented in Table 2.8.
Table 2.8 Action and Limit Levels for Marine Water Quality Monitoring
|
Parameter |
Action Level |
Limit Level |
|
|
During operation phase |
|||
|
DO in mg L-1 a |
Surface and Middle 4.1 mg L-1
Bottom 2.7 mg L-1 |
Surface and Middle 3.0 mg L-1
Bottom 2.0 mg L-1 |
|
|
Note: a. For DO, non-compliance of the water quality limits occurs when monitoring result is lower than the limits.
|
|||
The Event and Action Plan for marine water quality monitoring can be referred to the Updated EM&A Manual.
A total of 10 monitoring events for marine water quality monitoring for hydrotesting for the LPS and BPPS Pipelines during dischargewere conducted in the reporting period. The monitoring results were presented in the respective Monthly EM&A Reports. There were no Project-related Action and Limit Level exceedances for marine water quality monitoring for hydrotesting for the LPS and BPPS Pipelines in the reporting period.
According to Condition 3.7 of FEP-02/558/2018/A, Condition 3.8 of FEP-03/558/2018/B, Section 9.11.3 of the approved EIA Report and Section 7 of the Updated EM&A Manual, marine mammal exclusion zone monitoring is required during dredging / jetting operations for construction of BPPS Pipeline or LPS Pipeline. Marine mammal exclusion zone requirements are presented in Table 2.9.
Table 2.9 Marine Mammal Exclusion Zone Requirements
|
Activity |
Exclusion Zone |
Requirement |
|
Marine dredging or jetting operations for construction of BPPS Pipeline or LPS Pipeline |
250m |
Before pipeline dredging or jetting commence, the exclusion zone must have been continuously clear of marine mammals for 30 minutes. During pipeline dredging/ jetting, if marine mammals are spotted within the exclusion zone, pipeline dredging/ jetting works will cease and will not resume until the observer confirms that the zone has been continuously clear of marine mammals for a period of 30 minutes. |
Marine mammal exclusion zone monitoring was conducted during the reporting period when marine jetting operation for construction of BPPS Pipeline was undertaken. No sightings of marine mammals were observed during marine mammal exclusion zone monitoring in the reporting period. The monitoring results for marine mammal exclusion zone monitoring in the reporting period is summarised in Table 2.10.
Table 2.10 Monitoring Results for Marine Mammal Exclusion Zone Monitoring
|
Date |
Active works activities |
Monitoring results |
|
13 – 15 July 2022 |
Marine jetting operation at Southwest Lantau for the BPPS Pipeline (KP15.6 – 21.3) |
No sightings of marine mammals |
|
|
||
The operating speeds and marine travel routes of working vessels for construction of the Project within the reporting period were checked and reviewed for the reporting period. All the working vessels were operated at a speed lower than 10 knots when moving within the areas frequented by marine mammals, including the waters near Sha Chau and Lung Kwu Chau Marine Park, the waters at the west of Lantau Island and the waters between Soko Islands and Shek Kwu Chau, and followed the relevant marine travel requirements stipulated in the FEP. No non-compliance on the operating speeds and marine travel routes of working vessels was identified. Records of operating speeds and marine travel routes of working vessels for construction of the Project provided by the Contractor can be referred to the relevant Annexes of the associated Monthly EM&A Reports for the reporting period.
The compliance status on approval conditions given by the Director of Environmental Protection for the entry of working vessels (i.e. anchor handling tugs (AHTs)) within marine parks in pursuant to Condition 3.1 of FEP-01/558/2018/A for anchoring activities for construction of the Jetty, Condition 3.4 of FEP-02/558/2018/A and Condition 3.4 of FEP-03/558/2018/B for anchoring activities for pipelaying and/or post-trenching processes for construction of LPS and BPPS Pipelines, respectively, as appropriate within the reporting period was checked. No non-compliance on the approval conditions was identified. Records of entry events of working vessels within the marine parks for construction of the Project provided by the Contractor can be referred to relevant Annexes of the associated Monthly EM&A Reports for the reporting period.
A summary of the Environmental Mitigation Implementation Schedule (EMIS) is presented in Annex C. The necessary mitigation measures were implemented properly for the Project.
There were no Project-related Action and Limit Level exceedances for marine water quality monitoring in the reporting period.
Since construction phase marine mammal monitoring was completed in November 2021, there were no breaches of Action and Limit Levels for marine mammal monitoring in the reporting period.
Cumulative statistics on exceedance is provided in Annex E.
There was one environmental complaint received on the alleged dumping of waste into sea between Shek Kwu Chau and Tai A Chau in the reporting period. Upon investigation, no construction & demolition (C&D) waste was generated from the Project in the past two weeks upon receipt of complaint (i.e. between 7 and 21 September 2022). There is no evidence showing any unacceptable waste management practice for the Project. Environmental protection / mitigation measures were observed to be implemented properly in accordance with the Implementation Schedule as well as the environmental requirements under the Further Environmental Permits and the approved EIA report (Register No.: AEIAR-218/2018). The complaint is thus considered invalid.
There were no notification of summons and successful prosecutions recorded in the reporting period.
Statistics on environmental complaints,
notification of summons and successful prosecutions are summarised in Annex E.
This Quarterly EM&A Summary Report presents the key findings of the EM&A works during the reporting period from 1 July to 30 September 2022 for the construction works for the Project in accordance with the Updated EM&A Manual and the requirements of the Further Environmental Permits (FEP-01/558/2018/A, FEP-02/558/2018/A & FEP-03/558/2018/B).
Environmental auditing works, including regular site inspections of construction works conducted by the ET, audit of implementation of Waste Management Plan, and review of the acceptability of operating speeds and marine travel routes of working vessels, including checking of compliance with the approval conditions given by EPD for allowing the entry of working vessels within marine parks in pursuant to Condition 3.1 of FEP-01/558/2018/A, Condition 3.4 of FEP-02/558/2018/A and Condition 3.4 of FEP-03/558/2018/B, were conducted in the reporting period, as appropriate. No non-compliance of environmental statutory requirements was identified.
Marine water quality monitoring for jetting operations as well as marine water quality monitoring for hydrotesting for the BPPS Pipeline and LPS Pipeline were conducted during the reporting period in accordance with the Updated EM&A Manual. No Project-related Action and Limit Level exceedances were recorded.
Since construction phase marine mammal monitoring was completed in November 2021, no breaches of Action and Limit Levels were recorded.
There was one environmental complaint received on the alleged dumping of waste into sea between Shek Kwu Chau and Tai A Chau in the reporting period. Upon investigation, no construction & demolition (C&D) waste was generated from the Project in the past two weeks upon receipt of complaint (i.e. between 7 and 21 September 2022). There is no evidence showing any unacceptable waste management practice for the Project. Environmental protection / mitigation measures were observed to be implemented properly in accordance with the Implementation Schedule as well as the environmental requirements under the Further Environmental Permits and the approved EIA report (Register No.: AEIAR-218/2018). The complaint is thus considered invalid.
There were no notification of summons and successful prosecutions recorded in the reporting period.
The recommended environmental mitigation measures for the Project were effectively implemented and the EM&A programme undertaken by the ET has effectively monitored the construction activities as well as ensured proper implementation of mitigation measures in the reporting period.
([1]) Application for variation of an environmental permit for FEP-01/558/2018 was undertaken and the latest FEP (FEP-01/558/2018/A) was issued on 6 November 2020.
([2]) Application for variation of an environmental permit for FEP-03/558/2018/A was undertaken and the latest FEP (FEP-03/558/2018/B) was issued on 25 August 2021.