Executive Summary
1.1 Background
1.2 Scope of Report
1.3 Organization Structure
1.4 Summary of Construction Works
1.5 Summary of EM&A Programme Requirements
2.1 Air Quality
2.2 Noise Monitoring
2.3 Water Quality Monitoring
2.4 Dolphin Monitoring
2.5 EM&A Site Inspection
2.6 Waste Management Status
2.7 Environmental Licenses and Permits
2.8 Implementation Status of Environmental Mitigation Measures
2.9 Summary of Exceedances of the Environmental Quality Performance Limit
2.10 Summary of Complaints, Notification of Summons and Successful Prosecutions
3.1 Construction Activities for the Coming Quarter
3.2 Key Issues for the Coming Quarter
3.3 Monitoring Schedule for the Coming Quarter
4 Conclusions and recommendations
4.1 Conclusions
List of Appendices
Appendix A Project Organization for Environmental Works
Appendix B Three Month Rolling Construction Programmes
Appendix C Implementation Schedule of Environmental Mitigation Measures (EMIS)
Appendix D Summary of Action and Limit Levels
Appendix E EM&A Monitoring Schedules
Appendix F Impact Air Quality Monitoring Results and Graphical Presentation
Appendix G Impact Noise Monitoring Results and Graphical Presentation
Appendix H Impact Water Quality Monitoring Results and Graphical Presentation
Appendix I Impact Dolphin Monitoring Survey Results
Appendix J Event Action Plan
Appendix K Quarterly Summary of Waste Flow Table
Under Contract No. HY/2012/07, Gammon Construction Limited (GCL) is commissioned by the Highways Department (HyD) to undertake the design and construction of the Southern Connection Viaduct Section of the Tuen Mun – Chek Lap Kok Link Project (TM-CLK Link Project) while AECOM Asia Company Limited was appointed by HyD as the Supervising Officer. For implementation of the environmental monitoring and audit (EM&A) programme under the Contract, ERM-Hong Kong, Limited (ERM) has been appointed as the Environmental Team (ET). Ramboll Hong Kong Ltd. was employed by the HyD as the Independent Environmental Checker (IEC) and Environmental Project Office (ENPO) in accordance with Environmental Permit No. EP-354/2009/A. Further applications for variation of environmental permit (VEP), EP-354/2009/B, EP-354/2009/C and EP-354/2009/D, were granted on 28 January 2014, 10 December 2014 and 13 March 2015, respectively.
The southern landfall of TM-CLK Link lies alongside the Hong Kong - Zhuhai - Macao Bridge Hong Kong Boundary Crossing Facilities (HKBCF) where a reclamation area is constructed by Contract No. HY/2010/02 under Environmental Permit No. EP-353/2009/K and EP-354/2009/D. Upon the agreement and confirmation between the Supervising Officer Representatives and Contractors of HY/2010/02 and HY/2012/07 in September 2015, part of the reclamation area for southern landfall under EP-353/2009/K and EP-354/2009/D was handed-over to Contract No. HY/2012/07. Another part of the southern landfall area under EP-354/2009/D was handed-over to Contract No. HY/2012/07 after completion of reclamation works by Contract No. HY/2010/02 in June 2016.
The construction phase of the Contract commenced on 31 October 2013 and will be tentatively completed by 2019. The impact monitoring of the EM&A programme, including air quality, noise, water quality and marine ecological monitoring as well as environmental site inspections, commenced on 31 October 2013.
This is the Twentieth Quarterly EM&A Report presenting the EM&A works carried out during the period from 1 September to 30 November 2018 for the Southern Connection Viaduct Section in accordance with the Updated EM&A Manual of the TM-CLK Link Project. As informed by the Contractor, major activities in the reporting period included:
September 2018
Marine-based Works
· Uninstallation of marine piling platform
Land-based Works
· Pier construction;
· Re-alignment of Cheung Tung Road;
· Road works along North Lantau Highway;
· Asphalt paving;
· Construction of sign gantries, light poles and street furniture;
· Parapets and barriers installation; and
· Slope work of Viaducts A, B, C & D.
October 2018
Marine-based Works
· Uninstallation of marine piling platform
Land-based Works
· Realignment of Cheung Tung Road;
· Road works along North Lantau Highway;
· Asphalt paving;
· Construction of sign gantries, light poles and street furniture;
· Parapets and barriers installation; and
· Slope work of Viaducts A, B, C & D.
November 2018
Marine-based Works
· Uninstallation of marine piling platform
Land-based Works
· Reinstatement works along Cheung Tung Road;
· Abutment construction;
· Road works along North Lantau Highway;
· Asphalt paving;
· Construction of sign gantries, light poles and street furniture;
· Parapets and barriers installation; and
· Slope work of Viaducts A, B, C & D.
A summary of monitoring and audit activities conducted in the reporting period is listed below:
24-hour TSP monitoring 17 sessions
1-hour TSP monitoring 17 sessions
Noise monitoring 17 sessions
Water quality monitoring 36 sessions
Dolphin monitoring 6 sessions
Joint Environmental site inspection 13 sessions
Breaches of Action and Limit Levels for Air Quality
No exceedance of Action and Limit Levels was recorded for construction air quality monitoring in the reporting period.
Breaches of Action and Limit Levels for Noise
No exceedance of Action and Limit Levels was recorded for construction noise monitoring in the reporting period.
Breaches of Action and Limit Levels for Water Quality
Forty-eight (48) Action Level and five (5) Limit Level of Dissolved Oxygen (DO) exceedances were recorded for water quality impact monitoring in the reporting period.
Impact Dolphin Monitoring
One (1) Limit Level exceedance was observed for the quarterly dolphin monitoring data between September and November 2018. No unacceptable impact from the construction activities of the TM-CLKL Southern Connection Viaduct Section on Indo-Pacific humpback dolphin Sousa chinensis (i.e. Chinese White Dolphins) was noticeable from general observations during the dolphin monitoring in this reporting quarter.
Daily marine mammal exclusion zone monitoring was undertaken during the period of marine works under this Contract. No Passive Acoustic Monitoring (PAM) was implemented as the marine piling works were not carried out outside the daylight hours in this reporting period. No sighting of the Chinese White Dolphin was recorded in the monitoring period during the exclusion zone monitoring.
Environmental Complaints, Non-compliance & Summons
There was no environmental complaint, notification of summons or successful prosecution recorded in the reporting period.
Reporting Change
There was no reporting change in this reporting period.
Upcoming Works for the Next Reporting Period
Works to be undertaken in the coming quarter include the following:
December 2018
Land-based Works
· Reinstatement works along Cheung Tung Road;
· Abutment construction;
· Road works along North Lantau Highway;
· Asphalt paving;
· Construction of sign gantries, light poles and street furniture;
· Parapets and barriers installation; and
· Slope work of Viaducts A, B, C & D.
January 2019
Marine-based Works
· Reinstatement of Seawall at Seafront;
Land-based Works
· Reinstatement works along Cheung Tung Road;
· Drainage works;
· Construction of sign gantries, light poles and street furniture;
· Barriers installation; and
· Slope work of Viaducts A, B, C & D.
February 2019
Marine-based Works
· Reinstatement of Seawall at Seafront;
Land-based Works
· Drainage works;
· Construction of sign gantries, light poles and street furniture;
· Road marking at Portion A; and
· Slope work of Viaducts A, B, C & D.
Future Key Issues
Potential environmental impacts arising from the above upcoming construction activities in the coming quarterly period are mainly associated with air quality, noise, marine water quality, marine ecology and waste management issue.
According to the findings of the Northwest New Territories (NWNT) Traffic and Infrastructure Review conducted by the Transport Department, Tuen Mun Road, Ting Kau Bridge, Lantau Link and North Lantau Highway would be operating beyond capacity after 2016. This forecast has been based on the estimated increase in cross boundary traffic, developments in the Northwest New Territories (NWNT), and possible developments in North Lantau, including the Airport developments, the Lantau Logistics Park (LLP) and the Hong Kong – Zhuhai – Macao Bridge (HZMB). In order to cope with the anticipated traffic demand, two new road sections between NWNT and North Lantau – Tuen Mun – Chek Lap Kok Link (TM-CLKL) and Tuen Mun Western Bypass (TMWB) are proposed.
An Environmental Impact Assessment (EIA) of TM-CLKL (the Project) was prepared in accordance with the EIA Study Brief (No. ESB-175/2007) and the Technical Memorandum of the Environmental Impact Assessment Process (EIAO-TM). The EIA Report was submitted under the Environmental Impact Assessment Ordinance (EIAO) in August 2009. Subsequent to the approval of the EIA Report (EIAO Register Number: AEIAR-146/2009), an Environmental Permit (EP-354/2009) for TM-CLKL was granted by the Director of Environmental Protection (DEP) on 4 November 2009, and EP variation (EP-354/2009A) was issued on 8 December 2010. Further applications for variation of environmental permit (VEP), EP-354/2009/B, EP-354/2009/C and EP-354/2009/D, were granted on 28 January 2014, 10 December 2014 and 13 March 2015, respectively.
Under Contract No. HY/2012/07, Gammon Construction Limited (GCL) is commissioned by the Highways Department (HyD) to undertake the design and construction of the Southern Connection Viaduct Section of TM-CLKL (“the Contract”) while AECOM Asia Company Limited was appointed by HyD as the Supervising Officer. For implementation of the environmental monitoring and audit (EM&A) programme under the Contract, ERM-Hong Kong, Limited (ERM) has been appointed as the Environmental Team (ET). Ramboll Hong Kong Ltd. was employed by HyD as the Independent Environmental Checker (IEC) and Environmental Project Office (ENPO) in accordance with Environmental Permit No. EP-354/2009/A.
The southern landfall of TM-CLK Link lies alongside the Hong Kong - Zhuhai - Macao Bridge Hong Kong Boundary Crossing Facilities (HKBCF) where a reclamation area is constructed by Contract No. HY/2010/02 under Environmental Permit No. EP-353/2009/K and EP-354/2009/D. Upon the agreement and confirmation between the Supervising Officer Representatives and Contractors of HY/2010/02 and HY/2012/07 in September 2015, part of the reclamation area for southern landfall under EP-353/2009/K and EP-354/2009/D was handed-over to Contract No. HY/2012/07. Another part of the southern landfall area under EP-354/2009/D was handed-over to Contract No. HY/2012/07 after completion of reclamation works by Contract No. HY/2010/02 in June 2016.
The organization structure of the Contract is shown in Appendix A. The key personnel contact names and contact details are summarized in Table 1.1 below.
Table 1.1 Contact Information of Key Personnel
Party |
Position |
Name |
Telephone |
Fax |
HyD (Highways Department) |
Project Coordinator |
Stanley Chan |
2762 3406 |
3188 6614 |
|
Senior Engineer |
Steven Shum
|
2762 4133 |
3188 6614 |
SOR (AECOM Asia Company Limited)
|
Chief Resident Engineer |
Daniel Ip |
3553 3800 |
2492 2057 |
|
Resident Engineer
|
Kingman Chan |
3691 3950 |
3691 2899 |
ENPO / IEC (Ramboll Hong Kong Ltd.) |
ENPO Leader
|
Y.H. Hui |
3465 2850 |
3465 2899 |
IEC
|
Dr. F.C. Tsang |
3465 2851 |
3465 2899 |
|
Contractor (Gammon Construction Limited) |
Environmental Officer
|
Roy Leung |
3520 0387 |
3520 0486 |
24-hour Complaint Hotline
|
|
9738 4332 |
|
|
ET (ERM-HK) |
ET Leader |
Dr. Jasmine Ng |
2271 3311 |
2723 5660 |
September 2018
Marine-based Works
· Uninstallation of marine piling platform
Land-based Works
· Pier construction;
· Re-alignment of Cheung Tung Road;
· Road works along North Lantau Highway;
· Asphalt paving;
· Construction of sign gantries, light poles and street furniture;
· Parapets and barriers installation; and
· Slope work of Viaducts A, B, C & D.
October 2018
Marine-based Works
· Uninstallation of marine piling platform
Land-based Works
· Realignment of Cheung Tung Road;
· Road works along North Lantau Highway;
· Asphalt paving;
· Construction of sign gantries, light poles and street furniture;
· Parapets and barriers installation; and
· Slope work of Viaducts A, B, C & D.
November 2018
Marine-based Works
· Uninstallation of marine piling platform
Land-based Works
· Reinstatement works along Cheung Tung Road;
· Abutment construction;
· Road works along North Lantau Highway;
· Asphalt paving;
· Construction of sign gantries, light poles and street furniture;
· Parapets and barriers installation; and
· Slope work of Viaducts A, B, C & D.
The locations of the construction activities are shown in Figure 1.3. The Environmental Sensitive Receivers in the vicinity of the Project are shown in Figure 1.4.
The EM&A programme required environmental monitoring for air quality, noise, water quality and marine ecology as well as environmental site inspections for air quality, noise, water quality, waste management, marine ecology and landscape and visual impacts. The EM&A requirements and related findings for each component are described in the following sections, which include:
· Monitoring parameters;
· Monitoring schedules for the reporting months and forthcoming months;
· Action and Limit levels for all environmental parameters;
· Event Action Plan;
· Results and observations;
· Environmental mitigation measures, as recommended in the approved EIA Report; and
·
Environmental requirement
in contract documents.
Figure 1.3 Locations of Construction Activities in the Reporting Period
The EM&A programme required environmental monitoring for air quality, noise, water quality and marine ecology as well as environmental site inspections for air quality, noise, water quality, waste management, marine ecology and landscape and visual impacts. The EM&A requirements and related findings for each component are summarized in the following sections.
The baseline air quality monitoring undertaken by the HZMB Projects during October 2011 included the two monitoring stations ASR9A and ASR9C for this Project. Thus, the baseline monitoring results and Action/Limit Level presented in HZMB Baseline Monitoring Report ([1]) are adopted for this Project.
1-hour TSP and 24-hour TSP monitoring were conducted at 2 alternative air quality monitoring stations, ASR8A (Area 4) and ASR9 (entrance of MTR Depot) during the reporting period in accordance with the requirement of the Updated EM&A Manual. The monitoring stations are indicated in Figure 2.1 and details are presented in Table 2.1.
High Volume Samplers (HVSs) were used for carrying out 1-hour and 24-hour TSP monitoring during the reporting period. The HVSs meets all requirements of the Updated EM&A Manual. Brand and model of the equipment are given in Table 2.2.
Wind data monitoring equipment was installed at Area 4 during the reporting period for logging wind speed and wind direction. The wind sensor was setup such that it was clear of obstructions or turbulence caused by building. The wind data monitoring equipment is recalibrated at least once every six months.
Table 2.1 Locations of Impact Air Quality Monitoring Stations and Monitoring Dates in this Reporting Period
Monitoring Station (1) |
Monitoring Period |
Location |
Description |
Parameters & Frequency |
ASR8A |
4, 10, 13, 19, 22 and 28 September 2018 4, 10, 16, 22, 25 and 31 October 2018 6, 12, 15, 21 and 27 November 2018 |
Area 4 |
On ground at the works area, Area 4 |
1-hour Total Suspended Particulates (1-hour TSP, µg/m3), 3 times per day every 6 days 24-hour Total Suspended Particulates (24-hour TSP, µg/m3), daily for 24-hour every 6 days |
ASR9 |
MTR Depot |
On the ground nearby MTR Depot entrance |
Note:
(1) Air Quality Monitoring Stations ASR9A and ASR9C at Siu Ho Wan MTRC Depot proposed in accordance with the Updated EM&A were relocated to ASR9 and ASR8A respectively.
Table 2.2 Air Quality Monitoring Equipment
Equipment |
Brand and Model |
High Volume Sampler |
Tisch Environmental Mass Flow Controlled Total Suspended Particulate (TSP) High Volume Sampler (Model No. TE-5170)
|
Wind Sensor |
Global Water (Wind Speed Sensor: WE550; Wind Direction Sensor: WE570)
|
Wind Anemometer for calibration |
Lutron (Model No. AM-4201) |
The Action and Limit Levels of the air quality monitoring are provided in Appendix D. The Event and Action plan is presented in Appendix J.
The schedules for air quality monitoring in the reporting quarter are provided in Appendix E.
The monitoring results for 1-hour TSP and 24-hour TSP are summarized in Tables 2.3 and 2.4, respectively. Monitoring results are presented graphically in Appendix F. Detailed impact air quality monitoring results and meteorological information were reported in the Fifty-ninth to Sixty-first Monthly EM&A Reports.
Table 2.3 Summary of 1-hour TSP Monitoring Results in this Reporting Period
Month |
Station |
Average (µg/m3) |
Range (µg/m3) |
Action Level (µg/m3) |
Limit Level (µg/m3) |
September 2018 |
ASR 8A |
90 |
28-346 |
394 |
500 |
ASR 9 |
63 |
31-97 |
393 |
500 |
|
October 2018 |
ASR 8A |
104 |
61-212 |
394 |
500 |
ASR 9 |
101 |
66-148 |
393 |
500 |
|
November 2018 |
ASR 8A |
88 |
45-149 |
394 |
500 |
ASR 9 |
96 |
57-159 |
393 |
500 |
Table 2.4 Summary of 24-hour TSP Monitoring Results in this Reporting Period
Month |
Station |
Average (µg/m3) |
Range (µg/m3) |
Action Level (µg/m3) |
Limit Level (µg/m3) |
September 2018 |
ASR 8A |
70 |
21-100 |
178 |
260 |
ASR 9 |
51 |
28-83 |
178 |
260 |
|
October 2018 |
ASR 8A |
75 |
54-110 |
178 |
260 |
ASR 9 |
78 |
64-100 |
178 |
260 |
|
November 2018 |
ASR 8A |
64 |
36-104 |
178 |
260 |
ASR 9 |
70 |
36-122 |
178 |
260 |
The major dust sources in the reporting period include construction activities under the Contract as well as nearby traffic emissions.
All 1-hour and 24-hour TSP results were below the Action and Limit Levels at all monitoring locations in this reporting period. No action is thus required to be undertaken in accordance with the Event Action Plan presented in Appendix J.
The baseline noise monitoring undertaken by the HZMB Projects during the period of 18 October to 1 November 2011 included the monitoring station NSR1 for this Project. Thus, the baseline monitoring results and Action/ Limit Level presented in HZMB Baseline Monitoring Report ([2]) are adopted for this Project.
In accordance with the Updated EM&A Manual, impact noise monitoring should be conducted once per week during the construction phase of the Contract.
Noise monitoring was conducted at the alternative noise monitoring station, NSR1A (Pak Mong Village Pavilion) during the reporting period in accordance with the requirement of Updated EM&A Manual. Figure 2.2 shows the location of the monitoring station. Table 2.5 describes the details of the monitoring station.
Noise monitoring was performed using sound level meter at the designated monitoring station in the reporting quarter. The deployed sound level meter complies with the International Electrotechnical Commission Publications (IEC) 651:1979 (Type 1) and 804:1985 (Type 1) specifications. Acoustic calibrator was deployed to check the sound level meter at a known sound pressure level. Brand and model of the equipment is given in Table 2.6.
Table 2.5 Location of Impact Noise Monitoring Station and Monitoring Dates in this Reporting Period
Monitoring Station |
Monitoring Period |
Location |
Parameters & Frequency |
NSR1A |
4, 10, 13, 19, 22 and 28 September 2018 4, 10, 16, 22, 25 and 31 October 2018 6, 12, 15, 21 and 27 November 2018 |
Pak Mong Village Pavilion |
30-mins measurement at each monitoring station between 0700 and 1900 on normal weekdays (Monday to Saturday). Leq, L10 and L90 would be recorded. At least once a week |
Note: (1) Noise Monitoring Station NSR1 at Pak Mong Village proposed in accordance with the Updated EM&A Manual was relocated to NSR1A. |
Table 2.6 Noise Monitoring Equipment
Equipment |
Brand and Model |
Integrated Sound Level Meter |
Rion NL-52
|
Acoustic Calibrator |
Rion NC-73 |
The Action and Limit levels of the noise monitoring are provided in Appendix D. The Event and Action plan is presented in Appendix J.
The schedule for construction noise monitoring in the reporting period is provided in Appendix E.
The monitoring results for noise monitoring are summarized in Table 2.7. Monitoring results are presented graphically in Appendix G and detailed impact noise monitoring results are reported in the Fifty-ninth to sixty-first Monthly EM&A Reports.
Table 2.7 Summary of Construction Noise Monitoring Results at NSR1A in the Reporting Period
Month |
Average , dB(A), Leq (30mins) |
Range, dB(A), Leq (30mins) |
Limit Level, dB(A), Leq (30mins) |
September 2018 |
65 |
62-67 |
75 |
October 2018 |
65 |
63-70 |
75 |
November 2018 |
64 |
64-65 |
75 |
The baseline water quality monitoring undertaken by the HZMB Projects between 6 and 31 October 2011 included all monitoring stations except SR4a for the Project. Thus, the baseline monitoring results except for station SR4a and Action/Limit Level presented in HZMB Baseline Monitoring Report ([3]) are adopted for this Project. Baseline water quality monitoring was conducted at station SR4a from 29 August to 24 September 2013.
Due to Three-Runway System (3RS) marine construction works, an alternative water quality control station CS(Mf)3(N) was proposed to replace control station CS(Mf)3. The Proposal of Alternative Water Quality Monitoring Station ([4]) was submitted to EPD on 31 March 2017 and granted on 6 April 2017. Water quality monitoring at CS(Mf)3(N) is undertaken since 2 May 2017. The locations of the monitoring stations under the Contract are shown in Figure 2.3 and Table 2.8.
Table 2.8 Locations of Water Quality Monitoring Stations and the Corresponding Monitoring Requirements
Station ID |
Type |
Coordinates |
*Parameters, unit |
Depth |
Frequency |
|
|
|
Easting |
Northing |
|
|
|
IS(Mf)9 |
Impact Station (Close to HKBCF construction site) |
813273 |
818850 |
Temperature(°C) pH(pH unit) Turbidity (NTU) Water depth (m) Salinity (ppt) Dissolved Oxygen (DO) (mg/L and % of saturation) · Suspended Solid (SS) (mg/L) |
3 water depths: 1m below sea surface, mid-depth and 1m above sea bed. If the water depth is less than 3m, mid-depth sampling only. If water depth less than 6m, mid-depth may be omitted.
|
Impact monitoring: 3 days per week, at mid-flood and mid-ebb tides during the construction period of the Contract. |
IS(Mf)16 |
Impact Station (Close to HKBCF construction site) |
814328 |
819497 |
|||
IS8 |
Impact Station(Close to HKBCF construction site) |
814251 |
818412 |
|||
SR4(N) |
Sensitive receiver (Tai Ho Inlet) |
814705 |
817859 |
|||
SR4a |
Sensitive receiver |
815247 |
818067 |
|||
CS(Mf)3(N)
|
Control Station |
808814 |
822355 |
|||
CS(Mf)5 |
Control Station |
817990 |
821129 |
|||
Notes: In addition to the parameters presented monitoring location/position, time, water depth, sampling depth, tidal stages, weather conditions and any special phenomena or works underway nearby were also recorded. Water Quality Monitoring Station CS(Mf)3 was relocated to CS(Mf)3(N) since 2 May 2017. Water Quality Monitoring Station SR4 was relocated to SR4(N) since 2 March 2018. |
Table 2.9 summarizes the equipment used in the impact water quality monitoring programme.
Table 2.9 Water Quality Monitoring Equipment
Equipment |
Brand and Model |
Multi-parameters (Dissolved Oxygen, Salinity, Turbidity, Temperature, pH) |
YSI ProDSS / YSI 6920 / YSI 6920 V2
|
|
|
Positioning Equipment |
Furuno GP-170
|
Water Depth Detector |
Lowrance Mark 5x / Garmin Striker 4
|
Water Sampler |
WildCo Vertical Alpha Bottles 1120-2.2L /1120-3.2L Aquatic Research Instrument Vertical/Horizontal Point Water Sampler 2.2L / 3.0L
|
The schedules for water quality monitoring in the reporting quarter are provided in Appendix E. Water quality monitoring during mid-ebb tide on 12 September 2018 and during both mid-ebb and mid-flood tides on 17 September 2018 were cancelled due to adverse weather. Water quality monitoring on 1 October and 17 October 2018 were cancelled due to suspension of marine works.
In this reporting period, a total of 36 monitoring events for impact water quality monitoring were conducted at monitoring stations in the reporting period. Monitoring results are presented graphically in Appendix H and detailed impact water quality monitoring results were reported in the Fifty-ninth to Sixty-first Monthly EM&A Reports.
Forty-eight (48) Action Level and five (5) Limit Level of Dissolved Oxygen (DO) exceedances were recorded for water quality impact monitoring in the reporting period. Actions were taken in accordance with the Event Action Plan as presented in Appendix J.
Impact dolphin monitoring is required to be conducted by a qualified dolphin specialist team to evaluate whether there have been any effects on the Indo-Pacific humpback dolphin Sousa chinensis (i.e. Chinese White Dolphin) from the Contract. In order to fulfil the EM&A requirements and make good use of available resources, the on-going impact line transect dolphin monitoring data collected by HyD’s Contract No. HY/2011/03 Hong Kong-Zhuhai-Macao Bridge. Hong Kong Link Road - Section between Scenic Hill and Hong Kong Boundary Crossing Facilities on the monthly basis is adopted to avoid duplicates of survey effort.
Table 2.10 summarizes the equipment used for the impact dolphin monitoring.
Table 2.10 Dolphin Monitoring Equipment
Equipment |
Model |
Global Positioning System (GPS)
Camera
Laser Binoculars Marine Binocular Vessel for Monitoring
|
Garmin 18X-PC Geo One Phottix Nikon D90 300m 2.8D fixed focus Nikon D90 20-300m zoom lens Infinitor LRF 1000 Bushell 7 x 50 marine binocular with compass and reticules 65 foot single engine motor vessel with viewing platform 4.5m above water level |
Dolphin monitoring should cover all transect lines in Northeast Lantau (NEL) and the Northwest Lantau (NWL) survey areas twice per month throughout the entire construction period. The monitoring data should be compatible with, and should be made available for, long-term studies of small cetacean ecology in Hong Kong. In order to provide a suitable long-term dataset for comparison, identical methodology and line transects employed in baseline dolphin monitoring was followed in the impact dolphin monitoring.
The impact dolphin monitoring was carried out in the NEL and NWL along the line transect as depicted in Figure 2.4. The co-ordinates of all transect lines are shown in Table 2.11 below ([5]).
Table 2.11 Impact Dolphin Monitoring Line Transect Co-ordinates
Line No. |
Easting |
Northing |
Line No. |
Easting |
Northing |
||
1 |
Start Point |
804671 |
815456 |
13 |
Start Point |
816506 |
819480 |
1 |
End Point |
804671 |
831404 |
13 |
End Point |
816506 |
824859 |
2 |
Start Point |
805476 |
820800 |
14 |
Start Point |
817537 |
820220 |
2 |
End Point |
805476 |
826654 |
14 |
End Point |
817537 |
824613 |
3 |
Start Point |
806464 |
821150 |
15 |
Start Point |
818568 |
820735 |
3 |
End Point |
806464 |
822911 |
15 |
End Point |
818568 |
824433 |
4 |
Start Point |
807518 |
821500 |
16 |
Start Point |
819532 |
821420 |
4 |
End Point |
807518 |
829230 |
16 |
End Point |
819532 |
824209 |
5 |
Start Point |
808504 |
821850 |
17 |
Start Point |
820451 |
822125 |
5 |
End Point |
808504 |
828602 |
17 |
End Point |
820451 |
823671 |
6 |
Start Point |
809490 |
822150 |
18 |
Start Point |
821504 |
822371 |
6 |
End Point |
809490 |
825352 |
18 |
End Point |
821504 |
823761 |
7 |
Start Point |
810499 |
822000* |
19 |
Start Point |
822513 |
823268 |
7 |
End Point |
810499 |
824613 |
19 |
End Point |
822513 |
824321 |
8 |
Start Point |
811508 |
821123 |
20 |
Start Point |
823477 |
823402 |
8 |
End Point |
811508 |
824254 |
20 |
End Point |
823477 |
824613 |
9 |
Start Point |
812516 |
821303 |
21 |
Start Point |
805476 |
827081 |
9 |
End Point |
812516 |
824254 |
21 |
End Point |
805476 |
830562 |
10 |
Start Point |
813525 |
821176 |
22 |
Start Point |
806464 |
824033 |
10 |
End Point |
813525 |
824657 |
22 |
End Point |
806464 |
829598 |
11 |
Start Point |
814556 |
818853 |
23 |
Start Point |
814559 |
821739 |
11 |
End Point |
814556 |
820992 |
23 |
End Point |
814559 |
824768 |
12 |
Start Point |
815542 |
818807 |
24 |
Start Point |
805476 |
815900 |
12 |
End Point |
815542 |
824882 |
24 |
End Point |
805476 |
819100 |
The Action and Limit levels of dolphin impact monitoring are shown in Appendix D. The Event and Action plan is presented in Appendix J.
The dolphin monitoring schedules for the reporting period are shown in Appendix E.
A total of 797.27 km of survey effort was collected, with 93.8% of the total survey effort being conducted under favourable weather conditions (i.e. Beaufort Sea State 3 or below with good visibility). Among the two areas, 291.60 km and 505.67 km of survey effort were conducted in NEL and NWL survey areas respectively. The total survey effort conducted on primary lines was 576.22 km, while the effort on secondary lines was 221.05 km. Survey effort conducted on both primary and secondary lines were considered as on-effort survey data. The survey efforts are summarized in Appendix I.
During the six sets of monitoring surveys in September to November 2018, a total of six (6) groups of 13 Chinese White Dolphins were sighted. All dolphin sightings were made during on-effort, while five of the sixth on-effort dolphin sightings were made on primary lines. In this quarterly period, all dolphin groups were sighted in NWL, no sighting of dolphin was sighted in NEL. Summary table of the dolphin sightings is shown in Appendix II of Appendix I.
Encounter rates of Chinese White Dolphins deduced from the survey effort and on-effort sighting data from the primary transect lines under favourable conditions (Beaufort 3 or below) in the reporting period with the results presented in Tables 2.12 and 2.13.
Table 2.12 Individual Survey Event Encounter Rates
Survey Area |
Survey period |
Encounter rate (STG) (no. of on-effort dolphin sightings per 100 km of survey effort) |
Encounter rate (ANI) (no. of dolphins from all on-effort sightings per 100 km of survey effort) |
Primary Lines Only |
Primary Lines Only |
||
NEL |
Set 1: 4th / 18th Sep 2018 |
0.0 |
0.0 |
Set 2: 20th / 26th Sep 2018 |
0.0 |
0.0 |
|
Set 3: 4th /11th Oct 2018 |
0.0 |
0.0 |
|
Set 4: 16th / 18th Oct 2018 |
0.0 |
0.0 |
|
Set 5: 1st / 6th Nov 2018 |
0.0 |
0.0 |
|
Set 6: 8th /13th Nov 2018 |
0.0 |
0.0 |
|
NWL |
Set 1: 4th / 18th Sep 2018 |
0.00 |
0.00 |
Set 2: 20th / 26th Sep 2018 |
1.62 |
3.24 |
|
Set 3: 4th /11th Oct 2018 |
0.00 |
0.00 |
|
Set 4: 16th / 18th Oct 2018 |
1.63 |
3.27 |
|
Set 5: 1st / 6th Nov 2018 |
5.81 |
9.69 |
|
Set 6: 8th /13th Nov 2018 |
0.00 |
0.00 |
Note: Dolphin Encounter Rates are deduced from the six sets of surveys (two surveys in each set) in the reporting period in Northeast (NEL) and Northwest Lantau (NWL)
Table 2.13 Quarterly Average Encounter Rates
Survey Area |
Encounter rate (STG) (no. of on-effort dolphin sightings per 100 km of survey effort) |
Encounter rate (ANI) (no. of dolphins from all on-effort sightings per 100 km of survey effort) |
||
September - November 2018 |
September -November 2011 |
September - November 2018 |
September -November 2011 |
|
Northeast Lantau |
0.0 |
6.00 ± 5.05 |
0.0 |
22.19 ± 26.81 |
Northwest Lantau |
1.51 ± 2.25 |
9.85 ± 5.85 |
2.70 ± 3.78 |
44.66 ± 29.85 |
Note: encounter rates deduced from the baseline monitoring period (September – November 2011) have been recalculated based only on survey effort and on-effort sighting data made along the primary transect lines under favourable conditions
Table 2.14 Comparison of Quarterly Average Group Sizes
|
Average Dolphin Group Size |
|
September - November 2018 |
September - November 2011 |
|
Overall |
2.17 ± 0.98 (n = 6) |
3.72 ± 3.13 (n = 66) |
Northeast Lantau |
--- |
3.18 ± 2.16 (n = 17) |
Northwest Lantau |
2.17 ± 0.98 (n = 6) |
3.92 ± 3.40 (n = 49) |
Although the dolphins infrequently occurred along the alignment of TM-CLKL Southern Connection Viaduct in the past and during the baseline monitoring period, it is apparent that dolphin usage has been significantly reduced in both NEL and NWL, and many individuals have shifted away from the important habitat around the Brothers Islands.
Daily marine mammal exclusion zone monitoring was undertaken during the period of marine works under this Contract. No sighting of Chinese White Dolphin was recorded in the monitoring period during the exclusion zone monitoring.
Passive Acoustic Monitoring (PAM) was decommissioned in this reporting period as no marine piling works was carried out outside the daylight hours since September 2015. Daytime marine mammal exclusion zone was still in effect to cater for temporary staging installation and uninstallation works.
Site inspections were carried out on a weekly basis to monitor the implementation of proper environmental pollution control and mitigation measures under the Contract. Thirteen (13) site inspections were carried out in the reporting quarter on 5, 12, 18 and 27 September 2018, 2, 10, 16 and 25 October 2018 and 2, 7, 14, 21 and 29 November 2018.
Key observations during the site inspections in this reporting period are summarized in Table 2.15.
Table 2.15 Specific Observations Identified during the Weekly Site Inspection in this Reporting Period
Inspection Date |
Location & Environmental Observations |
Recommendations/ Remarks |
05 September 2018 |
Southern Landfall Stagnant water in the drip tray should be cleared. The generator should be placed in a proper drip tray. |
Southern Landfall The Contractor was reminded to clear stagnant water in drip tray. The Contractor was reminded to place the generator in drip tray.
|
12 September 2018 |
Viaduct E Chemical containers were observed not placed in drip tray. Accumulated general refuse should be cleared regularly. |
Viaduct E The Contractor was reminded to place chemical containers in drip tray. The Contractor was reminded to clear general refuse. |
18 September 2018 |
Southern Landfall Watering should be applied on unpaved road. Stagnant water in the drip tray should be cleared. |
Southern Landfall The Contractor was reminded to apply watering on unpaved road. The Contractor was reminded to clear stagnant water in drip tray. |
27 September 2018 |
Viaduct E (Pier E13) The generator should be placed in a proper drip tray. NRMM label should be provided on the generator. Viaduct E Chemical containers were observed not placed in drip tray. |
Viaduct E (Pier E13) The Contractor was reminded to place the generator in drip tray. The Contractor was reminded to provide NRMM label on the generator. Viaduct E The Contractor was reminded to place chemical containers in drip tray. |
02 October 2018 |
Viaduct E General refuse on the deck and in the skip should be cleared Viaduct E (Pier E9) Chemical container should be placed in drip tray. |
Viaduct E The Contractor was reminded to clear general refuse. Viaduct E (Pier E9) The Contractor was reminded to place chemical container in drip tray. |
10 October 2018 |
Viaduct E A clear NRMM label should be displayed on the generator. Accumulated general refuse should be cleared. |
Viaduct E The Contractor was reminded to replace the NRMM label. The Contractor was reminded to clear accumulated general refuse. |
16 October 2018 |
Viaduct E (Pier E13b) General refuse should be removed. Drip tray should be provided for chemical containers. |
Viaduct E (Pier E13b) The Contractor was reminded to remove accumulated general refuse. The Contractor was reminded to place chemical containers in drip tray. |
25 October 2018 |
WA2 NRMM label should be displayed on the excavator. Drip tray should be provided for chemical container. WA2 (Pier B13) Water should be applied on unpaved road. Southern Landfall NRMM label should be displayed on the compressor. Drip tray should be provided for chemical container. |
WA2 The Contractor was reminded to display NRMM label on the excavator. The Contractor was reminded to place chemical container in drip tray. WA2 (Pier B13) The Contractor was reminded to maintain watering on unpaved road. Southern Landfall The Contractor was reminded to display NRMM label on the compressor. The Contractor was reminded to place chemical container in drip tray. |
2 November 2018 |
Bridge F3 NRMM label should be displayed on the generator. Decolorized NRMM label on the compressor should be replaced.
Ramp F Chemical container should be placed in drip tray. |
Bridge F3 The Contractor was reminded to display NRMM label on the generator. The Contractor was reminded to replace the decolorized NRMM label on the compressor. Ramp F The Contractor was reminded to place chemical container in drip tray. |
7 November 2018 |
Viaduct E (Pier E12c) Opening of water barriers should be covered to avoid mosquito breeding and accumulation of refuse in the barriers. Viaduct E (Pier E13c) Chemical containers should be placed in drip tray. |
Viaduct E (Pier E12c) The Contractor was reminded to cover the opening of water barriers.
Viaduct E (Pier E13c) The Contractor was reminded to place chemical containers in drip tray. |
14 November 2018 |
Ramp A Chemical containers should be placed in drip tray. Southern Landfall Water should be applied on unpaved road. |
Ramp A The Contractor was reminded to place chemical containers in drip tray. Southern Landfall The Contractor was reminded to maintain watering on unpaved road.
|
21 November 2018 |
Viaduct E Chemical containers should be placed in drip tray. General refuse should be cleared.
NRMM label should be displayed on the compressor. In addition, drip tray should be provided for the compressor. |
Viaduct E The Contractor was reminded to place chemical containers in drip tray. The Contractor was reminded to clear general refuse. The Contractor was reminded to display NRMM label on the compressor and to provide drip tray for the compressor. |
29 November 2018 |
Portion A NRMM label should be displayed on the forklift. Accumulated refuse should be cleared. Stagnant water in drip tray should be cleared. |
Portion A The Contractor was reminded to display NRMM label should be displayed on the forklift. The Contractor was reminded to clear accumulated refuse. The Contractor was reminded to clear stagnant water in drip tray. |
Wastes generated during this reporting period include mainly construction wastes (inert and non-inert), recyclable materials, chemical waste and marine sediment. Reference has been made to the waste flow table prepared by the Contractor (Appendix K). The quantities of different types of wastes are summarized in Table 2.16.
Table 2.16 Quantities of Different Waste Generated in the Reporting Period
Month/ Year |
Inert C&D Materials (a) (m3) |
Imported Fill (m3) |
Inert Construction Waste Re-used (m3) |
Non-inert Construction Waste (b) (kg) |
Recyclable Materials (c) (kg) |
Chemical Wastes (kg) |
Marine Sediment (m3) |
||
Category L |
Category M (Mp & Mf) |
Category H |
|||||||
September 2018 |
1,866 |
0 |
0 |
419,480 |
4,986 |
4,000 |
0 |
0 |
0 |
October 2018 |
3,182 |
0 |
0 |
365,740 |
56 |
4,800 |
0 |
0 |
0 |
November 2018 |
5,090 |
0 |
0 |
406,980 |
0 |
2,600 |
0 |
0 |
0 |
Notes: |
|||||||||
(a) Inert construction wastes include hard rock and large broken concrete, and materials disposed as public fill. (b) Non-inert construction wastes include general refuse disposed at landfill. (c) Recyclable materials include metals, paper, cardboard, plastics, timber, felled trees and others. |
The Contractor was advised to properly maintain on site C&D materials and waste collection, sorting and recording system, dispose of C&D materials and wastes at designated ground and maximize reuse/ recycle of C&D materials and wastes. The Contractor was also reminded to properly maintain the site tidiness and dispose of the wastes accumulated on site regularly and properly.
For chemical waste containers, the Contractor was reminded to treat properly and store temporarily in designated chemical waste storage area on site in accordance with the Code of Practice on the Packaging, Labelling and Storage of Chemical Wastes.
The status of environmental licensing and permit is summarized in Table 2.17 below.
Table 2.17 Summary of Environmental Licensing and Permit Status
License/ Permit |
License or Permit No. |
Date of Issue |
Date of Expiry |
License/ Permit Holder |
Remarks |
Environmental Permit |
EP-353/2009/K |
11-Apr-16 |
N/A |
HyD |
Hong Kong Boundary Crossing Facilities |
Environmental Permit |
EP-354/2009/D |
13-Mar-15 |
N/A |
HyD |
Tuen Mun- Chek Lap Kok Link |
Construction Dust Notification |
361571 |
05-Jul-13 |
N/A |
GCL |
|
Construction Dust Notification |
362093 |
17-Jul-13 |
N/A |
GCL |
For Area 23 |
Chemical Waste Registration |
5213-951-G2380-17 |
12-Jun-14 |
N/A |
GCL |
Viaducts A, B, C, D & E |
Chemical Waste Registration |
5213-961-G2380-13 |
10-Oct-13 |
N/A |
GCL |
Chemical waste produced in Contract No. HY/2012/07 (Area 1 adjacent to Cheng Tung Road, Siu Ho Wan) |
Chemical Waste Registration |
5213-961-G2380-14 |
10-Oct-13 |
N/A |
GCL |
Chemical waste produced in Contract No. HY/2012/07 (Area 2 adjacent to Cheung Tung Road, Pak Mong Village) |
Chemical Waste Registration |
5213-974-G2588-03 |
04-Nov-13 |
N/A |
GCL |
Chemical waste produced in Contract No. HY/2012/07 (WA5 adjacent to Cheung Tung Road, Yam O) |
Construction Waste Disposal Account |
7017735 |
10-Jul-13 |
N/A |
GCL |
- |
Construction Waste Disposal Account |
7019470 |
03-Mar-14 |
N/A |
GCL |
Vessel CHIT Account |
Waste Water Discharge License |
WT00019017-2014 |
13-May-14 |
31-May-19 |
GCL |
Discharge for marine portion |
Waste Water Discharge License |
WT00019018-2014 |
13-May-14 |
31-May-19 |
GCL |
Discharge for land portion |
Construction Noise Permit for night works and works in general holidays |
GW-RW0235-18
|
21 Jun 2018
|
18 Dec 2018
|
GCL
|
General works at WA5 |
Construction Noise Permit for night works and works in general holidays |
GW-RS0244-18
|
30 Mar 2018
|
29 Sep 2018
|
GCL |
Broad Permit for Whole Site Areas
|
Construction Noise Permit for night works and works in general holidays |
GW-RS0740-18
|
20 Aug 2018
|
16 Feb 2019
|
GCL |
Broad Permit for Whole Site Areas
|
Construction Noise Permit for night works and works in general holidays |
GW-RS0654-18
|
1 Aug 2018
|
30 Sep 2019
|
GCL |
Broad Permit for Segment Launching at Land Portion |
Construction Noise Permit for night works and works in general holidays |
GW-RS0911-18
|
12 October 2018
|
30 October 2018
|
GCL |
Broad Permit for Segment Launching at Land Portion |
Construction Noise Permit for night works and works in general holidays |
GW-RS0740-18
|
20 Aug 2018 |
16 Feb 2019
|
GCL |
Broad Permit for Whole Site Areas
|
Construction Noise Permit for night works and works in general holidays |
GW-RS0752-18 |
28 Aug 2018 |
31 Oct 2018 |
GCL |
Traffic sign installation at Tung Chung
|
Construction Noise Permit for night works and works in general holidays |
GW-RS0909-18 |
16 Oct 2018 |
30 Nov 2018 |
GCL |
Road milling and paving at Airport Road |
Construction Noise Permit for night works and works in general holidays |
GW-RS1009-18 |
7 Nov 2018 |
30 Nov 2018 |
GCL |
Chung Tung Road Street Light Removal |
Construction Noise Permit for night works and works in general holidays |
GW-RS1085-18 |
28 Nov 2018 |
31 Dec 2018 |
GCL |
Maintenance of Traffic Sign in Tung Chung |
No Action or Limit Level exceedance for 1-hour TSP and 24-hour TSP for air quality and construction noise monitoring was recorded during the reporting period.
Forty-eight (48) Action Level and five (5) Limit Level of Dissolved Oxygen (DO) exceedances were recorded for water quality impact monitoring in the reporting period. The exceedances were considered not related to this Contract upon further investigation and the investigation reports are presented in Appendix L.
Table 2.18 Comparison between Quarterly Mean and Ambient Mean Values of Depth-averaged Suspended Solids
Station |
Baseline Mean |
Ambient Mean (a) |
Quarterly Mean (September to November 2018) |
|||
Mid-ebb |
Mid-flood |
Mid-ebb |
Mid-flood |
Mid-ebb |
Mid-flood |
|
CS(Mf)3(N) |
9.2 |
12.8 |
12.0 |
16.6 |
8.0 |
10.3 |
CS(Mf)5 |
9.2 |
11.5 |
11.9 |
14.9 |
7.2 |
6.9 |
SR4(N) |
10.3 |
12.3 |
13.4 |
16.0 |
8.9 |
8.6 |
SR4a |
9.1 |
9.8 |
11.9 |
12.7 |
8.1 |
8.7 |
IS8 |
11.3 |
13.5 |
14.6 |
17.6 |
8.6 |
10.2 |
IS(Mf)9 |
10.9 |
14.3 |
14.2 |
18.5 |
8.1 |
9.1 |
IS(Mf)16 |
11.4 |
10.3 |
14.8 |
13.4 |
8.2 |
9.1 |
Notes: |
||||||
(a) Ambient mean value is defined as a 30% increase of the baseline mean value (b) Water Quality Monitoring Station CS(Mf)3 was relocated to CS(Mf)3(N) since 2 May 2017. (c) Water Quality Monitoring Station SR4 was relocated to SR4(N) since 2 March 2018. |
One (1) Limit Level exceedance was recorded for impact dolphin monitoring in this reporting quarter. Following the review of the monitoring data and marine works details as per the procedure stipulated in the Event and Action Plan of the Updated EM&A Manual, no unacceptable impact was associated with the construction works under this Contract that may have affected the dolphin usage in the North Lantau region. Investigation findings were detailed in Appendix L.
There was no complaint, notification of summons or successful prosecution recorded in the reporting period.
Statistics on complaint, notification of summons of successful prosecution are summarized in Appendix L.
Land-based Works
· Reinstatement works along Cheung Tung Road;
· Abutment construction;
· Road works along North Lantau Highway;
· Asphalt paving;
· Construction of sign gantries, light poles and street furniture;
· Parapets and barriers installation; and
· Slope work of Viaducts A, B, C & D.
January 2019
Marine-based Works
· Reinstatement of Seawall at Seafront;
Land-based Works
· Reinstatement works along Cheung Tung Road;
· Drainage works;
· Construction of sign gantries, light poles and street furniture;
· Barriers installation; and
· Slope work of Viaducts A, B, C & D.
February 2019
Marine-based Works
· Reinstatement of Seawall at Seafront;
Land-based Works
· Drainage works;
· Construction of sign gantries, light poles and street furniture;
· Road marking at Portion A; and
· Slope work of Viaducts A, B, C & D.
Potential environmental impacts arising from the above upcoming construction activities are mainly associated with air quality, noise, marine water quality, marine ecology and waste management issues.
Impact monitoring for air quality, noise, marine water quality and dolphin monitoring are scheduled to continue for the next reporting period.
The monitoring programme has been reviewed and was considered as adequate to cater for the nature of works in progress.
The Twentieth Quarterly EM&A Report presents the findings of the EM&A activities undertaken during the period from 1 September to 30 November 2018, in accordance with the Updated EM&A Manual and the requirements of the Environmental Permits (EP-354/2009/D and EP-353/2009/K).
Neither Action Level nor Limit Level exceedances were observed for 1-hour and 24-hour TSP level and noise impact monitoring in this reporting period.
Forty-eight (48) Action Level and five (5) Limit Level of Dissolved Oxygen (DO) exceedances were recorded for water quality impact monitoring in the reporting period.
A total of six (6) groups of thirteen (13) Chinese White Dolphins were sighted during the six sets of survey from September to November 2018. One (1) Limit Level exceedance was recorded for the quarterly dolphin monitoring data between September to November 2018, no unacceptable impact from the activities of this Contract on Chinese White Dolphins was noticeable from the general observations. It is critical to monitor the dolphin usage in North Lantau region in the upcoming quarters, to determine whether the dolphins are continuously affected by the various construction activities in relation to the HZMB-related works, and whether suitable mitigation measure can be applied to revert the situation.
Environmental site inspection was carried out 13 times in the reporting period. Recommendations on remedial actions were given to the Contractor for the deficiencies identified during the site audits.
There was no complaint, notification of summons or successful prosecution recorded in the reporting period.
([1])
Agreement No. CE 35/2011 (EP) Baseline Environmental Monitoring for Hong Kong -
Zhuhai - Macao Bridge Hong Kong Projects - Investigation. Baseline
Environmental Monitoring Report (Version C). Submitted on 8 March 2012
and subsequently approved by EPD.
([2]) Agreement
No. CE 35/2011 (EP) Baseline Environmental Monitoring for Hong Kong - Zhuhai -
Macao Bridge Hong Kong Projects - Investigation. Baseline Environmental
Monitoring Report (Version C). Submitted on 8 March 2012 and subsequently
approved by EPD.
([3])
Agreement No. CE 35/2011 (EP) Baseline
Environmental Monitoring for Hong Kong - Zhuhai - Macao Bridge Hong Kong
Projects - Investigation. Baseline Environmental Monitoring Report
(Version C). Submitted on 8 March 2012 and subsequently approved by EPD.
([4])
The Proposal of Alternative Water Quality Monitoring Station with the
verification letter from IEC was submitted to EPD on 31 March 2017, and
subsequently replied with no objection on.6 April 2017.