Executive Summary
1.1 Background
1.2 Scope of This 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 Water Quality Monitoring
2.3 Dolphin Monitoring
2.4 Post-Translocation Coral 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
List of Appendices
Appendix A Project Organization for Environmental Works
Appendix B Implementation Schedule of Environmental Mitigation Measures (EMIS)
Appendix C Summary of Action and Limit Levels
Appendix D Impact Air Quality Monitoring Result in Graphical Presentation
Appendix E Impact, Post Construction and Operational Water Quality Monitoring Results in Graphical Presentation
Appendix F Event Action Plan
Appendix G Summary of Waste Flow Table
Under Contract No. HY/2012/08, Dragages – Bouygues Joint Venture (DBJV) is commissioned by the Highways Department (HyD) to undertake the design and construction of the Northern Connection Sub-sea Tunnel 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) in accordance with Environmental Permit No. EP-354/2009/A. Ramboll Hong Kong Limited was employed by HyD as the Independent Environmental Checker (IEC) and Environmental Project Office (ENPO). Subsequent applications for variation of environmental permits (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 construction phase of the Contract commenced on 1 November 2013. The impact monitoring of the EM&A programme, including air quality, water quality, marine ecological monitoring and environmental site inspections were commenced on 1 November 2013.
Termination proposal for construction EM&A programme was approved by EPD on 19 March 2021. The construction phase EM&A programme of the Contract has been terminated since 19 March 2021.
This is the Final EM&A report presenting the EM&A works carried out during the period from 1 November 2013 to 19 March 2021 for the Contract No. HY/2012/08 Northern Connection Sub-sea Tunnel Section (the “Contract ”) in accordance with the Updated EM&A Manual of the TM-CLK Link Contract. As informed by the Contractor, major activities undertaken during the course of this Contract included:
Construction Activities Undertaken |
Land-based Works |
Work Area – WA 23 · Sorting of rock material |
Work Area – WA 18 · Site formation works · Site office construction · Completion of chain-link fence · Site hoarding works |
Work Area – N6 · CLP substation construction · Pile cap construction · Land bored piling |
Portion N-A · Construction of temporary access · Diaphragm wall construction · Excavation for north launching shaft · Land bored piling works · TBM platform construction · Formwork and metal scaffolding works · Delivery & assembly of TBM · Land-based sheet piling works · Box culvert extension · Startup of TBM · Construction of cross passage tympanum · Phase 2 surcharge removal · Preparation of stage 2 reclamation · Bulk excavation · Diaphragm wall construction · RC structure · Demolition of amenities and workshop · ELS removal · Road & drainage works · Gantry crane removal |
Portion N-B · Vibro-compaction · Surcharge set up · TBM tunnel works · Seawall inspection and remedial works |
Portion N-C · Vibro-compaction · Surcharge set up · Set up of slurry treatment plant · Surcharge removal · Diaphragm wall construction for Ventilation Shaft · Excavation for ventilation shaft · Construction of capping beam and base slab for Ventilation Shaft · Installation of tower crane · Modification and maintenance works for slurry · TBM tunnel works · Shaft structure and backfilling · Construction of North Ventilation Building |
TBM Tunnel · Excavation of sub-sea tunnel · Construction of cross passage tympanum · Thrust frame removal · Sub-sea tunnel gallery installation · Slab construction of tunnel protection enhancement · Corbel construction · Cross passage lining installation · Cross passage construction by pipe jacking · Excavation of sub-sea tunnel · OVHD construction · Parapet wall installation · Fireboard installation · Construction of overhead ventilation ducts · Construction of thermal barrier · Construction of walkway corbel & cover |
Portion S-A · Deep band drain installation · Dewatering deep well installation · Jet grouting, CSM ground treatment and diaphragm wall · Ground freezing works · Bulk excavation · Diaphragm wall construction · RC structure · ELS removal · Diaphragm wall removal · E&M platform installation · Backfilling · Road & drainage works · C&C Tunnel RC structure · Roofing system installation · UU installation · Carpark formation · Carpark canopies installation |
Portion S-B · Road & drainage works · UU installation · Carpark formation · Carpark canopies installation |
Portion S-C · Diaphragm wall construction · ELS removal · STP demolition · Cut & cover tunnel RC structure · Backfilling · Water treatment facilities dismantling · UU installation · Carpark formation · Carpark canopies installation |
Northern Landfall · UU installation · Carpark formation · Hard paving and footpath at Pump Sump Area · Reinstatement and defect works for reinstatement at Box culvert |
Southern Ventilation Building · Installation of green roof system & chain fence |
CLP Substation · Demolition works and backfilling works of CLP substation |
Marine-based Works |
Portion N-A · Dredging · Vertical and sloping seawall construction · Reclamation filling · Marine sheet piling for box culvert extension · Box culvert extension · Removal of existing seawall and temporary pontoon installation at River Trade Terminal (RTT) · Rock bund deposition for marine sheet pipe remedial works · Installation of silt curtain · Band drain installation · Seawall construction and filling works |
Portion N-B · Dredging · Vertical and sloping seawall construction · Reclamation filling |
Portion N-C · Dredging · Vertical and sloping seawall construction · Reclamation filling · TBM tunnel works · Seawall enhancement works |
Portion S-B · Seawall modification works |
Portion S-C · Jetty dismantling works |
A summary of monitoring and audit activities conducted during the course of this Contract is listed below:
24-hour TSP monitoring 807 sessions
1-hour TSP monitoring 808 sessions
Impact water quality monitoring 456 sessions
Impact dolphin monitoring 158 sessions
Joint environmental site inspection 380 sessions
Post-translocation coral monitoring 4 sessions
Post-construction water quality monitoring 12 sessions
Operational phase water quality monitoring 9 sessions
Operational phase dolphin monitoring 19 sessions
Breaches of Action and Limit Levels for Air Quality
One hundred and twenty two (122) Action Level and fifteen (15) Limit Level exceedances of 1-hour TSP, twelve (12) Action Level and four (4) Limit Level exceedances of 24-hour TSP were recorded for air quality monitoring during the impact monitoring period.
Breaches of Action and Limit Levels for Water Quality
Fifty-eight (58) Action Level of Dissolved Oxygen (Surface and Middle), eighty-three (83) Action Level and eighteen (18) Limit Level exceedances of Dissolved Oxygen (Bottom), twenty-seven (27) Action Level and one (1) Limit Level exceedances of Suspended Solids (SS) were recorded for water quality monitoring during the impact monitoring period.
Dolphin Monitoring
Eleven (11) Action Level and twenty (20) Limit Level exceedances were recorded for impact dolphin monitoring during the impact monitoring period.
Three (3) Limit Level exceedances were recorded for quarterly post-construction (operational) dolphin monitoring data between June 2020 and March 2021.
Post-Translocation Coral Monitoring
No exceedance of Action and Limit Levels was recorded for post-translocation coral monitoring. The results were detailed in the First to Fourth Quarterly Post- Translocation Coral Monitoring Reports and were submitted under separate covers.
Environmental Complaints, Non-compliance & Summons
Seventeen (17) environmental complaints and one (1) notification of summons were recorded during the impact monitoring period. There was no successful prosecution recorded.
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 (VEP) (EP-354/2009A) was issued on 8 December 2010. Subsequent applications for variation of environmental permits (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/2012/08, Dragages – Bouygues Joint Venture (DBJV) is commissioned by the Highways Department (HyD) to undertake the design and construction of the Northern Connection Sub-sea Tunnel Section of TM-CLKL 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 Limited was employed by HyD as the Independent Environmental Checker (IEC) and Environmental Project Office (ENPO).
Layout of the Contract components is presented in Figure 1.1.
Termination proposal for construction EM&A programme was approved by EPD on 19 March 2021. The construction phase EM&A programme of the Contract has been terminated since 19 March 2021.
This is the Final EM&A Report under the Contract No. HY/2012/08 Northern Connection Sub-sea Tunnel Section. This report presents a summary of the environmental monitoring and audit works from 1 November 2013 to 19 March 2021.
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 |
Highways Department
|
Engr 24/SD |
Ken T.M. Cheng |
2762 4062 |
3188 6614 |
SOR (AECOM Asia Company Limited)
|
Chief Resident Engineer |
Roger Man
|
2293 6388
|
2293 6300
|
ENPO / IEC (Ramboll Hong Kong Ltd.) |
ENPO Leader
|
Y.H. Hui |
3465 2850 |
3465 2899 |
IEC
|
Brian Tam |
9700 6767 |
3465 2899 |
|
Contractor (Dragages – Bouygues Joint Venture) |
Quality and Environmental Manager |
Erwin Regalado
|
2507 1732
|
2293 7499 |
|
24-hour hotline
|
|
2293 7330 |
|
ET (ERM-HK) |
ET Leader |
Jasmine Ng |
2271 3311 |
2723 5660 |
As informed by the Contractor, details of the major works undertaken during the course of this Contract are listed below:
Construction Activities Undertaken |
Land-based Works |
Work Area – WA 23 · Sorting of rock material |
Work Area – WA 18 · Site formation works · Site office construction · Completion of chain-link fence · Site hoarding works |
Work Area – N6 · CLP substation construction · Pile cap construction · Land bored piling |
Portion N-A · Construction of temporary access · Diaphragm wall construction · Excavation for north launching shaft · Land bored piling works · TBM platform construction · Formwork and metal scaffolding works · Delivery & assembly of TBM · Land-based sheet piling works · Box culvert extension · Startup of TBM · Construction of cross passage tympanum · Phase 2 surcharge removal · Preparation of stage 2 reclamation · Bulk excavation · Diaphragm wall construction · RC structure · Demolition of amenities and workshop · ELS removal · Road & drainage works · Gantry crane removal |
Portion N-B · Vibro-compaction · Surcharge set up · TBM tunnel works · Seawall inspection and remedial works |
Portion N-C · Vibro-compaction · Surcharge set up · Set up of slurry treatment plant · Surcharge removal · Diaphragm wall construction for Ventilation Shaft · Excavation for ventilation shaft · Construction of capping beam and base slab for Ventilation Shaft · Installation of tower crane · Modification and maintenance works for slurry · TBM tunnel works · Shaft structure and backfilling · Construction of North Ventilation Building |
TBM Tunnel · Excavation of sub-sea tunnel · Construction of cross passage tympanum · Thrust frame removal · Sub-sea tunnel gallery installation · Slab construction of tunnel protection enhancement · Corbel construction · Cross passage lining installation · Cross passage construction by pipe jacking · Excavation of sub-sea tunnel · OVHD construction · Parapet wall installation · Fireboard installation · Construction of overhead ventilation ducts · Construction of thermal barrier · Construction of walkway corbel & cover |
Portion S-A · Deep band drain installation · Dewatering deep well installation · Jet grouting, CSM ground treatment and diaphragm wall · Ground freezing works · Bulk excavation · Diaphragm wall construction · RC structure · ELS removal · Diaphragm wall removal · E&M platform installation · Backfilling · Road & drainage works · C&C Tunnel RC structure · Roofing system installation · UU installation · Carpark formation · Carpark canopies installation |
Portion S-B · Road & drainage works · UU installation · Carpark formation · Carpark canopies installation |
Portion S-C · Diaphragm wall construction · ELS removal · STP demolition · Cut & cover tunnel RC structure · Backfilling · Water treatment facilities dismantling · UU installation · Carpark formation · Carpark canopies installation |
Northern Landfall · UU installation · Carpark formation · Hard paving and footpath at Pump Sump Area · Reinstatement and defect works for reinstatement at Box culvert |
Southern Ventilation Building · Installation of green roof system & chain fence |
CLP Substation · Demolition works and backfilling works of CLP substation |
Marine-based Works |
Portion N-A · Dredging · Vertical and sloping seawall construction · Reclamation filling · Marine sheet piling for box culvert extension · Box culvert extension · Removal of existing seawall and temporary pontoon installation at River Trade Terminal (RTT) · Rock bund deposition for marine sheet pipe remedial works · Installation of silt curtain · Band drain installation · Seawall construction and filling works |
Portion N-B · Dredging · Vertical and sloping seawall construction · Reclamation filling |
Portion N-C · Dredging · Vertical and sloping seawall construction · Reclamation filling · TBM tunnel works · Seawall enhancement works |
Portion S-B · Seawall modification works |
Portion S-C · Jetty dismantling works |
The Environmental Sensitive Receivers in the vicinity of the Project are shown in Figure 1.2.
The environmental mitigation measures implementation schedule is presented in Appendix B.
The EM&A programme required environmental monitoring for air quality, 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;
· Action and Limit levels for all environmental parameters;
· Event Action Plan;
· Tested environmental impact hypotheses;
· Environmental mitigation measures, as recommended in the approved EIA Report; and
· Environmental requirement in contract documents.
The EM&A programme required environmental monitoring for air quality, 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.
Termination proposal for construction EM&A programme was approved by EPD on 19 March 2021. The construction phase EM&A programme of the Contract has been terminated since 19 March 2021.
Table 2.1 Locations of Impact Air Quality Monitoring Stations and Monitoring Dates during the Impact Monitoring Period
Monitoring Station |
Location |
Description |
Parameters & Frequency |
ASR1 |
Tuen Mun Fireboat Station |
Office |
TSP monitoring 1-hour Total Suspended Particulates (1-hour TSP, µg/m3), 3 times in every 6 days 24-hour Total Suspended Particulates (24-hour TSP, µg/m3), daily for 24-hour in every 6 days Enhanced TSP monitoring (commenced on 24 October 2014) 1-hour Total Suspended Particulates (1-hour TSP, µg/m3), 3 times in every 3 days 24-hour Total Suspended Particulates (24-hour TSP, µg/m3), daily for 24-hour in every 3 days |
ASR5 |
Pillar Point Fire Station |
Office |
|
AQMS1 |
Previous River Trade Golf |
Bare ground |
|
AQMS2/ASR6 |
Butterfly Beach Laundry |
Office |
|
ASR10 |
Butterfly Beach Park |
Recreational uses |
Note:
(1) AQMS2 was relocated and HVS was re-installed at ASR6 (Butterfly Beach Laundry) on 17 January 2014. AQMS2 was then superseded by ASR6 for the impact air quality monitoring. Impact air quality monitoring at ASR6 commenced on 21 January 2014.
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 Meter |
MetPak (Model: MetPak II (S/N: 13130002) Davis (Model: Weather Wizard III (S/N: WE90911A30) Davis (Model: Vantage Pro 2 (S/N: AS160104014) |
|
|
Wind Anemometer for calibration |
Lutron (Model No. AM-4201) |
The Action and Limit Levels of the air quality monitoring are provided in Appendix C.
During the period of impact monitoring, impact 1-hour TSP monitoring and impact 24-hour TSP monitoring were carried out in accordance with the Updated EM&A Manual. The schedules for air quality monitoring were reported in the First to Eighty-ninth Monthly EM&A Reports.
The major dust sources during the impact monitoring period included construction activities under the Contract and Contract No. HY/2013/12 as well as nearby traffic emissions and renovation works undertaken by other contract.
A total of 808 monitoring events for 1-hour TSP and 807 monitoring events for 24-hour TSP were undertaken during the impact monitoring period.
Comparison of EM&A results with baseline monitoring and EIA predictions for 1-hour TSP and 24-hour TSP are summarized in Tables 2.3 and 2.4 and present graphically in Appendix D. The detailed impact monitoring data and meteorological information were reported in the First to Eighty-ninth Monthly EM&A Reports.
Table 2.3 Summary of Average Levels of TSP Level of Baseline Monitoring and the Impact Monitoring Period (in µg/m3)
Monitoring Station |
Average Baseline Monitoring |
Average Impact Monitoring |
|
|||||||||
Nov 2013 - Oct 2014 |
Nov 2014 - Oct 2015 |
Nov 2015 - Oct 2016 |
Nov 2016 - Oct 2017 |
Nov 2017 - Oct 2018 |
Nov 2018 - Oct 2019 |
Nov 2019 - Oct 2020 |
Nov 2020 -Mar 2021 |
|
|
|||
ASR 1 (1-hr TSP) |
125 |
178 |
140 |
112
|
137 |
138 |
126 |
131 |
160 |
|
||
ASR 1 (24-hr TSP) |
128 |
101 |
84 |
73 |
83 |
89 |
85 |
83 |
109 |
|
||
ASR 5 (1-hr TSP) |
138 |
194 |
162 |
135 |
160 |
167 |
151 |
155 |
179 |
|
||
ASR 5 (24-hr TSP) |
167 |
106 |
91 |
79 |
81 |
100 |
91 |
91 |
108 |
|
||
AQMS 1 (1-hr TSP) |
131 |
141 |
124 |
88 |
102 |
99 |
94 |
101 |
129 |
|
||
AQMS 1 (24-hr TSP) |
127 |
86 |
78 |
60 |
60 |
64 |
58 |
61 |
81 |
|
||
AQMS 2/ ASR 6 (1-hr TSP) |
135 |
163 |
130 |
109 |
131 |
123 |
110 |
113 |
155 |
|
||
AQMS 2/ ASR 6 (24-hr TSP) |
166 |
94 |
77 |
67 |
70 |
77 |
69 |
68 |
106 |
|
||
ASR 10 (1-hr TSP) |
134 |
121 |
88 |
78 |
86 |
87 |
69 |
69 |
103 |
|
||
ASR 10 (24-hr TSP) |
129 |
72 |
64 |
58 |
57 |
59 |
50 |
48 |
73 |
|
||
Table 2.4 Comparison of Impacts on Air Quality (in μg/m³) between EIA Prediction, Baseline Monitoring and the Impact Monitoring Period (in µg/m3)
Monitoring Station |
EIA Predicted Maximum |
Maximum Baseline Monitoring |
|
Maximum Impact Monitoring |
||||||||
Nov 2013 - Oct 2014 |
Nov 2014 - Oct 2015 |
Nov 2015 - Oct 2016 |
Nov 2016 - Oct 2017 |
Nov 2017 - Oct 2018 |
Nov 2018 - Oct 2019 |
|
Nov 2019 – Oct 2020 |
Nov 2020 –Mar 2021 |
|
|||
ASR 1 (1-hr TSP) |
195 |
182 |
474 |
404 |
283 |
545 |
584 |
646 |
|
747 |
887 |
|
ASR 1 (24-hr TSP) |
148 |
173 |
249 |
162 |
125 |
220 |
328 |
237 |
|
207 |
244 |
|
ASR 5 (1-hr TSP) |
235 |
211 |
559 |
346 |
293 |
456 |
455 |
425 |
|
534 |
472 |
|
ASR 5 (24-hr TSP) |
133 |
249 |
258 |
151 |
138 |
163 |
279 |
196 |
|
196 |
176 |
|
AQMS 1 (1-hr TSP) |
N/A |
196 |
431 |
348 |
231 |
473 |
324 |
311 |
|
303 |
248 |
|
AQMS 1 (24-hr TSP) |
N/A |
211 |
228 |
155 |
112 |
160 |
207 |
127 |
|
131 |
141 |
|
AQMS 2/ ASR 6 (1-hr TSP) |
226 |
226 |
425 |
309 |
279 |
401 |
335 |
478 |
|
1454 |
358 |
|
AQMS 2/ ASR 6 (24-hr TSP) |
153 |
221 |
269 |
133 |
141 |
138 |
178 |
191 |
|
149 |
185 |
|
ASR 10 (1-hr TSP) |
189 |
215 |
645 |
251 |
202 |
475 |
816 |
242 |
|
407 |
246 |
|
ASR 10 (24-hr TSP) |
112 |
181 |
166 |
130 |
116 |
205 |
250 |
146 |
|
138 |
121 |
|
Maximum 1-hour TSP impact monitoring levels at ASR1, ASR5, AQMS2/ASR6 and ASR10 and maximum 24-hour TSP impact monitoring levels at ASR1, ASR5 and ASR10 were generally higher than their corresponding EIA predicted maximum levels.
One hundred and twenty two (122) Action Level and fifteen (15) Limit Level exceedances of 1-hour TSP, twelve (12) Action Level and four (4) Limit Level exceedances of 24-hour TSP were recorded for air quality monitoring during the impact monitoring period. Summary of the exceedances is reported in Table 2.5. Actions were taken in accordance with the Event Action Plan as presented in Appendix F. The exceedances were considered not related to this Contract upon further investigation. Detailed investigation reports on exceedances were presented in First to Sixth, Thirteenth, Fourteenth, Forty-fifth to Fifty-fourth, Fifty-eighth to Sixty-fifth, Sixty-seventh, Sixty-ninth, Seventy-first to Seventy-fourth, Seventy-seventh, Seventy-eighth, Eightieth, Eighty-second to Eighty-sixth and Eighty-eighth Monthly EM&A Reports.
Although occasional exceedances were recorded at these stations during impact monitoring period, they were not project-related upon investigation. It also appeared that the construction activities of the Contract did not cause significant impact on air quality with similar average TSP levels between the baseline and impact monitoring. The EIA has concluded that no adverse residual construction dust impacts will occur after implementation of mitigation measures. Thus, the monitoring results are considered to be in line with the EIA prediction.
With the implementation of the monitoring programme for air quality and environmental mitigation measures, the EM&A programme was considered adequate and effective in monitoring and minimizing the potential environmental impacts from the Contract.
Table 2.5 Summary of Action Level and Limit Level Exceedance of 1-hour TSP and 24-hour TSP
Period |
Station |
Parameter |
Number of Action Level Exceedance(s) |
Number of Limit Level Exceedance(s) |
November 2013 |
AQMS1 |
1-hour TSP |
1 |
- |
ASR1 |
1-hour TSP |
1 |
- |
|
ASR10 |
1-hour TSP |
- |
1 |
|
ASR5 |
1-hour TSP |
2 |
- |
|
December 2013 |
AQMS2/ASR6 |
1-hour TSP |
4 |
- |
ASR1 |
1-hour TSP |
2 |
- |
|
ASR10 |
1-hour TSP |
1 |
- |
|
ASR5 |
1-hour TSP |
3 |
1 |
|
AQMS2/ASR6 |
24-hour TSP |
- |
1 |
|
ASR1 |
24-hour TSP |
2 |
- |
|
ASR5 |
24-hour TSP |
2 |
- |
|
January 2014 |
AQMS1 |
1-hour TSP |
1 |
- |
AQMS2/ASR6 |
1-hour TSP |
1 |
- |
|
ASR1 |
1-hour TSP |
3 |
- |
|
ASR5 |
1-hour TSP |
2 |
- |
|
AQMS1 |
24-hour TSP |
1 |
- |
|
February 2014 |
AQMS1 |
1-hour TSP |
1 |
- |
AQMS2/ASR6 |
1-hour TSP |
1 |
- |
|
March 2014 |
ASR1 |
1-hour TSP |
1 |
- |
ASR5 |
1-hour TSP |
1 |
- |
|
April 2014 |
ASR10 |
1-hour TSP |
1 |
- |
November 2014 |
ASR1 |
1-hour TSP |
2 |
- |
December 2014 |
AQMS1 |
1-hour TSP |
1 |
- |
ASR5 |
1-hour TSP |
1 |
- |
|
July 2017 |
AQMS2/ASR6 |
1-hour TSP |
1 |
- |
ASR10 |
1-hour TSP |
1 |
- |
|
ASR5 |
1-hour TSP |
1 |
- |
|
August 2017 |
ASR1 |
1-hour TSP |
1 |
- |
September 2017 |
AQMS1 |
1-hour TSP |
1 |
- |
ASR1 |
1-hour TSP |
2 |
1 |
|
ASR5 |
1-hour TSP |
3 |
- |
|
October 2017 |
AQMS2/ASR6 |
1-hour TSP |
1 |
- |
ASR1 |
1-hour TSP |
2 |
- |
|
ASR5 |
1-hour TSP |
1 |
- |
|
ASR1 |
24-hour TSP |
1 |
- |
|
November 2017 |
ASR10 |
1-hour TSP |
2 |
1 |
ASR5 |
1-hour TSP |
2 |
- |
|
December 2017 |
ASR1 |
1-hour TSP |
4 |
- |
ASR5 |
1-hour TSP |
3 |
- |
|
ASR1 |
24-hour TSP |
1 |
1 |
|
ASR10 |
24-hour TSP |
1 |
- |
|
ASR5 |
24-hour TSP |
- |
2 |
|
January 2018 |
ASR5 |
1-hour TSP |
6 |
- |
February 2018 |
ASR1 |
1-hour TSP |
1 |
- |
ASR5 |
1-hour TSP |
1 |
- |
|
March 2018 |
ASR1 |
1-hour TSP |
2 |
- |
April 2018 |
ASR5 |
1-hour TSP |
1 |
- |
August 2018 |
ASR1 |
1-hour TSP |
2 |
- |
September 2018 |
ASR1 |
1-hour TSP |
2 |
1 |
October 2018 |
ASR1 |
1-hour TSP |
2 |
- |
ASR5 |
1-hour TSP |
1 |
- |
|
November 2018 |
AQMS2/ASR6 |
1-hour TSP |
1 |
- |
ASR1 |
1-hour TSP |
2 |
- |
|
ASR5 |
1-hour TSP |
3 |
- |
|
December 2018 |
AQMS2/ASR6 |
1-hour TSP |
1 |
- |
ASR1 |
1-hour TSP |
2 |
- |
|
January 2019 |
ASR1 |
1-hour TSP |
1 |
1 |
ASR5 |
1-hour TSP |
4 |
- |
|
February 2019 |
ASR1 |
24-hour TSP |
1 |
- |
March 2019 |
ASR1 |
1-hour TSP |
2 |
- |
May 2019 |
ASR1 |
1-hour TSP |
2 |
- |
ASR1 |
24-hour TSP |
1 |
- |
|
July 2019 |
AQMS2/ASR6 |
1-hour TSP |
1 |
- |
ASR1 |
1-hour TSP |
- |
1 |
|
ASR5 |
1-hour TSP |
1 |
|
|
September 2019 |
ASR1 |
1-hour TSP |
- |
1 |
October 2019 |
ASR1 |
1-hour TSP |
3 |
- |
November 2019 |
ASR1 |
1-hour TSP |
2 |
2 |
ASR5 |
1-hour TSP |
3 |
1 |
|
December 2019 |
ASR1 |
1-hour TSP |
1 |
1 |
ASR10 |
1-hour TSP |
1 |
- |
|
ASR5 |
1-hour TSP |
2 |
- |
|
March 2020 |
ASR5 |
1-hour TSP |
1 |
- |
April 2020 |
ASR1 |
1-hour TSP |
2 |
1 |
ASR5 |
1-hour TSP |
1 |
- |
|
June 2020 |
AQMS2/ASR6 |
1-hour TSP |
1 |
- |
August 2020 |
ASR1 |
1-hour TSP |
1 |
- |
September 2020 |
AQMS2/ASR6 |
1-hour TSP |
1 |
1 |
October 2020 |
AQMS2/ASR6 |
1-hour TSP |
1 |
- |
ASR1 |
1-hour TSP |
1 |
- |
|
ASR5 |
1-hour TSP |
2 |
- |
|
November 2020 |
AQMS2/ASR6 |
1-hour TSP |
1 |
- |
|
ASR1 |
1-hour TSP |
1 |
1 |
ASR5 |
1-hour TSP |
1 |
- |
|
ASR1 |
24-hour TSP |
2 |
- |
|
December 2020 |
ASR5 |
1-hour TSP |
1 |
- |
February 2021 |
ASR5 |
1-hour TSP |
2 |
- |
|
|
|
|
|
The baseline water quality monitoring undertaken by the Hong Kong – Zhuhai – Macao Bridge Hong Kong Projects (HZMB) between 6 and 31 October 2011 included all monitoring stations for the Project. Thus, the baseline monitoring results and Action/Limit Levels presented in HZMB Baseline Monitoring Report ([2]) are adopted for this Project.
In accordance with the Updated EM&A Manual, impact water quality monitoring was carried out three days per week since November 2013 (Figure 2.2a; Table 2.6).
Phase I Reclamation works for the Northern Landfall was substantially completed in December 2014. A proposal letter was sent to EPD on 21 May 2015 to seek approval for the temporary suspension of water quality monitoring. Subsequently, a letter from EPD on 5 June 2015 stated that they have no strong objection to the temporary suspension of the water quality monitoring. Water quality monitoring was suspended from 6 June 2015 effectively.
Marine works for Phase II reclamation commenced on 27 December 2016 and substantially completed in the end of May 2017. Water quality monitoring resumed on 27 December 2016 and was suspended since 30 May 2017.
Seawall block installation for Phase II reclamation commenced on 1 November 2017, impact water quality monitoring was resumed on 1 November 2017.
Seawall enhancement works at Northern Landfall has been completed on 31 December 2017 and water quality monitoring was suspended since 31 December 2017.
Seawall Modification Works at Portion S-B has commenced on 7 January 2019 and temporarily suspended after January 2019 and thus impact marine water quality monitoring resumed on 2 January 2019 and was temporarily suspended after January 2019.
Seawall Modification Works at Portion S-B commenced on 15 April 2019. Impact marine water quality monitoring resumed on 15 April 2019. In accordance with the approved Environmental Review Report dated 21 March 2018 for the Change in Design of Vertical Seawall to Sloping Seawall on Southern Landfall, Updated Impact water quality monitoring programme and water quality monitoring stations IS17, SR7 and IS(Mf)11 specified under the EM&A Manual for HZMB HKBCF project will be adopted (Figure 2.2b; Table 2.6). Results of water quality monitoring between April 2019 and June 2019 were adopted from the published EM&A data of Contract No. HY/2012/07 Tuen Mun-Chek Lap Kok Link – Southern Connection Viaduct Section.
The Jetty dismantling works commenced on 2 July 2019 and was completed on 11 July 2019. Water quality monitoring was carried out since 2 July 2019.
The Seawall modification works commenced on 12 August 2019 and completed on 30 December 2019. Water quality monitoring was suspended since 30 December 2019.
According to the Updated EM&A Manual, a post-construction water quality monitoring shall be carried out upon completion of all marine-based construction activities. Post-construction water quality monitoring was undertaken three days per week for at least 4 weeks in accordance with the Updated EM&A Manual. The proposal for post-construction water quality monitoring was approved by EPD on 5 March 2020. The post-construction water quality monitoring was conducted between 17 March 2020 and 11 April 2020. Locations of water quality monitoring stations presented in Figures 2.2a and 2.2b and in Table 2.7.
According to the Updated EM&A Manual, an operational phase water quality monitoring shall be performed monthly during the first year of Project operation at all designated monitoring stations including control stations. The operational phase water quality monitoring shall be ceased after the first year of operation of the Project subject to the first year review. Operational phase water quality monitoring commenced in June 2020. Locations of water quality monitoring stations presented in Figure 2.2c and in Table 2.8.
Table 2.6 Locations of Impact Water Quality Monitoring Stations and the Corresponding Monitoring Requirements
Station ID |
Type |
Coordinates |
*Parameters, unit |
Depth |
Frequency |
|
|
|
Easting |
Northing |
|
|
|
IS12 |
Impact Station |
813218 |
823681 |
Temperature(°C) pH(pH unit) Turbidity (NTU) Water depth (m) Salinity (ppt) DO (mg/L and % of saturation) · 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. |
IS13 |
Impact Station |
813667 |
824325 |
|||
IS14 |
Impact Station |
812592 |
824172 |
|||
IS15 |
Impact Station |
813356 |
825008 |
|||
CS4 |
Control / Far Field Station |
810025 |
824004 |
|||
CS6 |
Control / Far Field Station |
817028 |
823992 |
|||
SR8 |
Sensitive receiver (Gazettal beaches in Tuen Mun) |
816306 |
825715 |
|||
SR9 |
Sensitive receiver |
813601 |
825858 |
|||
SR10A |
Sensitive receiver |
823741 |
823495 |
|||
IS(Mf)11 |
Impact Station (Close to HKBCF construction site) 8 |
813562 |
820716 |
|
|
|
IS17 |
Impact Station (Close to HKBCF construction site) |
814539 |
820391 |
|
|
|
SR7 |
Sensitive receivers (Tai Mo Do) |
814293 |
821431 |
|
|
|
IS(Mf)9 |
Impact Station (Close to HKBCF construction site) |
813273 |
818850 |
|
|
|
IS(Mf)16 |
Impact Station (Close to HKBCF construction site) |
814328 |
819497 |
|
|
|
IS8(N) |
Impact Station (Close to HKBCF construction site) |
814413 |
818570
|
|
|
|
SR4(N2) |
Sensitive receiver (Tai Ho Inlet) |
814688 |
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. Water Quality Monitoring Station SR4(N) was relocated to SR4(N2) since 12 June 2019 |
||||||
Water Quality Monitoring Station IS8 was relocated to IS8(N) since 12 June 2019. |
Table 2.7 Locations of Post-Construction Water Quality Monitoring Stations and the Corresponding Monitoring Requirements
Station ID |
Type |
Coordinates |
*Parameters, unit |
Depth |
Frequency |
||
|
|
Easting |
Northing |
|
|
|
|
IS(Mf)11 |
Impact Station (Close to HKBCF construction site) |
813562 |
820716 |
Temperature(°C) pH(pH unit) Turbidity (NTU) Water depth (m) Salinity (ppt) DO (mg/L and % of saturation) · 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.
|
Post construction monitoring: 3 days per week, at mid-flood and mid-ebb tides for four weeks. |
|
IS17 |
Impact Station (Close to HKBCF construction site) |
814539 |
820391 |
||||
SR7 |
Sensitive receivers (Tai Mo Do) |
814293 |
821431 |
||||
IS(Mf)9 |
Impact Station (Close to HKBCF construction site) |
813273 |
818850 |
||||
IS(Mf)16 |
Impact Station (Close to HKBCF construction site) |
814328 |
819497 |
||||
IS8(N) |
Impact Station (Close to HKBCF construction site) |
814413 |
818570
|
||||
SR4(N2) |
Sensitive receiver (Tai Ho Inlet) |
814688 |
817996
|
|
|||
SR4a |
Sensitive receiver |
815247 |
818067 |
|
|||
CS(Mf)3(N) |
Control Station |
808814 |
822355 |
|
|||
CS(Mf)5 |
Control Station |
817990 |
821129 |
|
|||
IS12 |
Impact Station (Close to TMCLKL construction site) |
813218 |
823681 |
|
|||
IS13 |
Impact Station (Close to TMCLKL construction site) |
813667 |
824325 |
|
|
||
IS14 |
Impact Station (Close to TMCLK construction site) |
812592 |
824172 |
|
|
||
IS15 |
Impact Station (Close to TMCLK construction site) |
813356 |
825008 |
|
|
||
SR8 |
Sensitive receiver (Gazettal beaches in Tuen Mun) |
816306 |
825715 |
|
|
||
SR9 |
Sensitive
receiver |
813601 |
825858 |
|
|
||
SR10A(N) |
Sensitive
receiver |
823644 |
823484 |
|
|
||
CS4 |
Control Station |
810025 |
824004 |
|
|
||
CS6 |
Control Station |
817028 |
823992 |
|
|
||
*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. Water Quality Monitoring Station SR4(N) was relocated to SR4(N2) since 12 June 2019 Water Quality Monitoring Station IS8 was relocated to IS8(N) since 12 June 2019. Water Quality Monitoring Station SR10A was relocated to SR10A(N) since 5 March 2020. |
|||||||
Table 2.8 Locations of Operational Phase Water Quality Monitoring Stations and the Corresponding Monitoring Requirements
Station ID |
Type |
Coordinates |
*Parameters, unit |
Depth |
Frequency |
|
|
|
Easting |
Northing |
|
|
|
IS(Mf)11 |
Impact Station (Close to HKBCF construction site) |
813562 |
820716 |
Temperature(°C) pH(pH unit) Turbidity (NTU) Water depth (m) Salinity (ppt) DO (mg/L and % of saturation) · 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.
|
Monthly at each station, at mid-flood and mid-ebb tides during the first year of Project operation. |
SR4(N2) |
Sensitive receiver (Tai Ho Inlet) |
814688 |
817996 |
|||
CS2(A) |
Control Station |
805232 |
818606 |
|||
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. With reference to the EM&A Report under Contract No. HY/2011/03, water quality monitoring station SR3 was relocated to SR3(N) since 1 September 2017. With reference to the EM&A Report under Contract No. HY/2011/03, water quality monitoring station SR4 was relocated to SR4(N) since 1 January 2018. With reference to the EM&A Report under Contract No. HY/2011/03, water quality monitoring station SR4(N) was relocated to SR4(N2) since 21 August 2019. With reference to the EM&A Report under Contract No. HY/2011/03, water quality monitoring station CS2 was relocated to CS2(A) since 23 August 2017. |
Table 2.9 summarizes the equipment used in the impact, post construction and operational phase water quality monitoring programme.
Table 2.9 Water Quality Monitoring Equipment
Equipment |
Model |
Qty. |
Water Sampler |
Kahlsico Water-Bottle Model 135DW 150 |
1 |
Dissolved Oxygen Meter |
YSI Pro 2030 |
1 |
pH Meter |
HANNA HI 8314 |
1 |
HANNA HI 9125 |
1 |
|
Turbidity Meter |
HACH 2100Q |
1 |
Monitoring Position Equipment |
“Magellan” Handheld GPS Model explorist GC |
4 |
DGPS Koden KGP913MK2 |
1 |
|
Multi-Parameters |
YSI ProDss 18A104824 |
1 |
YSI ProDss 15M100005 |
1 |
|
YSI ProDss 0001C6A7 |
1 |
|
YSI ProDss 17H105557 |
1 |
|
YSI ProDss 17E100747 |
1 |
|
YSI ProDss 16H104234 |
1 |
|
YSI ProDss 16H104233 |
1 |
|
YSI ProDss 00019CB2 |
1 |
|
Positioning Equipment |
Furuno GP-170 |
1 |
Water Depth Detector |
Lowrance Mark 5x / Garmin Striker 4 |
1 |
The Action and Limit Levels of the water quality monitoring are provided in Appendix C. The Event and Action plan is presented in Appendix F.
Impact, post-construction and operational phase water quality monitoring were carried out in accordance with the Updated EM&A Manual. The schedules for water quality monitoring are reported in the First to Eighty-ninth Monthly EM&A Reports.
A total of 456 monitoring events for impact water quality monitoring events, 12 monitoring events for post-construction water quality monitoring and 9 monitoring events for operational phase water quality monitoring were undertaken during the course of the Contract. Results of operational phase water quality monitoring between April and May 2021 were presented in Ninety to Ninety-first Monthly EM&A Reports under Contract No. HY/2012/08.
Comparison of EM&A results with baseline monitoring are summarized in Tables 2.10 to 2.14. The detailed water quality monitoring data were reported in the First to Eighty-ninth Monthly EM&A Reports and detailed statistical analysis were represented in the First to Seventh Annual EM&A Reports.
Table 2.10 Summary of Averages Level of Surface DO Level of Baseline, Impact and Post-construction Monitoring (in mg/L)
Monitoring Station |
Tide |
Average Baseline Monitoring |
Average Impact Monitoring |
Post Construction Monitoring |
||||||
|
Nov 2013 - Oct 2014 |
Nov 2014 - Oct 2015 |
Nov 2015 - Oct 2016 |
Nov 2016 - Oct 2017 |
Nov 2017 - Oct 2018 |
Nov 2018 -Oct 2019 |
|
|
||
IS12 |
Mid-ebb |
6.1 |
6.3 |
7.0 |
- |
7.2 |
6.5 |
- |
7.2 |
|
Mid-flood |
6.1 |
6.4 |
7.1 |
- |
7.3 |
6.6 |
- |
7.1 |
|
|
IS13 |
Mid-ebb |
6.1 |
6.3 |
7.0 |
- |
7.2 |
6.5 |
- |
7.1 |
|
Mid-flood |
6.1 |
6.4 |
7.0 |
- |
7.3 |
6.5 |
- |
7.1 |
|
|
IS14 |
Mid-ebb |
6.1 |
6.3 |
6.9 |
- |
7.2 |
6.5 |
- |
7.2 |
|
Mid-flood |
6.1 |
6.4 |
7.0 |
- |
7.3 |
6.5 |
- |
7.1 |
|
|
IS15 |
Mid-ebb |
6.1 |
6.3 |
6.9 |
- |
7.2 |
6.5 |
- |
7.1 |
|
Mid-flood |
6.2 |
6.4 |
7.0 |
- |
7.3 |
6.5 |
- |
7.1 |
|
|
SR10A |
Mid-ebb |
6.0 |
6.4 |
6.9 |
- |
7.3 |
6.4 |
- |
6.9 |
|
Mid-flood |
6.0 |
6.4 |
7.0 |
- |
7.4 |
6.5 |
- |
6.8 |
|
|
SR8 |
Mid-ebb |
6.2 |
6.4 |
6.9 |
- |
7.2 |
6.5 |
- |
7.1 |
|
Mid-flood |
6.2 |
6.4 |
7.0 |
- |
7.3 |
6.6 |
- |
7.1 |
|
|
SR9 |
Mid-ebb |
6.0 |
6.3 |
6.9 |
- |
7.2 |
6.5 |
- |
7.2 |
|
Mid-flood |
6.0 |
6.4 |
7.0 |
- |
7.3 |
6.5 |
- |
7.1 |
|
|
IS(Mf)11 |
Mid-ebb |
6.5 |
- |
- |
- |
- |
- |
6.6 |
7.0 |
|
Mid-flood |
6.1 |
- |
- |
- |
- |
- |
6.6 |
7.0 |
|
|
SR7 |
Mid-ebb |
6.3 |
- |
- |
- |
- |
- |
6.5 |
7.0 |
|
Mid-flood |
6.0 |
- |
- |
- |
- |
- |
6.5 |
7.0 |
|
|
IS17 |
Mid-ebb |
6.4 |
- |
- |
- |
- |
- |
6.5 |
6.9 |
|
Mid-flood |
6.1 |
- |
- |
- |
- |
- |
6.7 |
7.0 |
|
|
IS(Mf)16 |
Mid-ebb |
6.3 |
- |
- |
- |
- |
- |
6.6 |
6.9 |
|
Mid-flood |
6.3 |
- |
- |
- |
- |
- |
6.7 |
7.0 |
|
|
IS(Mf)9 |
Mid-ebb |
6.6 |
- |
- |
- |
- |
- |
6.9 |
7.1 |
|
Mid-flood |
6.5 |
- |
- |
- |
- |
- |
6.7 |
7.1 |
|
|
IS8(N) |
Mid-ebb |
6.4 |
- |
- |
- |
- |
- |
6.7 |
7.0 |
|
Mid-flood |
6.4 |
- |
- |
- |
- |
- |
6.7 |
7.0 |
|
|
SR4(N2) |
Mid-ebb |
6.1 |
- |
- |
- |
- |
- |
6.4 |
6.9 |
|
Mid-flood |
6.3 |
- |
- |
- |
- |
- |
6.7 |
6.9 |
|
|
SR4a |
Mid-ebb |
5.5 |
- |
- |
- |
- |
- |
6.5 |
6.9 |
|
Mid-flood |
5.5 |
- |
- |
- |
- |
- |
6.7 |
6.9 |
|
Table 2.11 Summary of Averages Level of Middle DO Level of Baseline, Impact and Post-construction Monitoring (in mg/L)
Monitoring Station |
Tide |
Average Baseline Monitoring |
Average Impact Monitoring |
Post Construction Monitoring |
||||||
|
Nov 2013 - Oct 2014 |
Nov 2014 - Oct 2015 |
Nov 2015 - Oct 2016 |
Nov 2016 - Oct 2017 |
Nov 2017 - Oct 2018 |
Nov 2018 -Oct 2019 |
|
|
||
IS12 |
Mid-ebb |
5.9 |
6.2 |
6.9 |
- |
7.3 |
6.4 |
- |
7.1 |
|
Mid-flood |
6.9 |
6.3 |
7.0 |
- |
7.4 |
6.5 |
- |
7.0 |
|
|
IS13 |
Mid-ebb |
6.0 |
6.2 |
6.9 |
- |
7.3 |
6.4 |
- |
7.0 |
|
Mid-flood |
6.0 |
6.3 |
7.0 |
- |
7.4 |
6.5 |
- |
7.1 |
|
|
IS14 |
Mid-ebb |
6.0 |
6.2 |
6.9 |
- |
7.2 |
6.4 |
- |
7.1 |
|
Mid-flood |
5.9 |
6.2 |
6.9 |
- |
7.3 |
6.4 |
- |
7.0 |
|
|
IS15 |
Mid-ebb |
6.0 |
6.2 |
6.9 |
- |
7.3 |
6.4 |
- |
7.1 |
|
Mid-flood |
6.1 |
6.2 |
6.9 |
- |
7.4 |
6.5 |
- |
7.0 |
|
|
SR10A |
Mid-ebb |
6.0 |
6.2 |
6.8 |
- |
7.3 |
6.4 |
- |
6.8 |
|
Mid-flood |
5.9 |
6.3 |
6.9 |
- |
7.4 |
6.5 |
- |
6.7 |
|
|
IS(Mf)11 |
Mid-ebb |
6.1 |
- |
- |
- |
- |
- |
6.1 |
6.8 |
|
Mid-flood |
5.9 |
- |
- |
- |
- |
- |
6.1 |
6.8 |
|
|
IS17 |
Mid-ebb |
6.0 |
- |
- |
- |
- |
- |
6.1 |
6.7 |
|
Mid-flood |
5.9 |
- |
- |
- |
- |
- |
6.3 |
6.9 |
|
|
IS(Mf)16 |
Mid-ebb |
6.3 |
- |
- |
- |
- |
- |
- |
- |
|
Mid-flood |
6.1 |
- |
- |
- |
- |
- |
- |
- |
|
|
IS(Mf)9 |
Mid-ebb |
- |
- |
- |
- |
- |
- |
7.1 |
6.6 |
|
Mid-flood |
6.2 |
- |
- |
- |
- |
- |
7.2 |
6.8 |
|
Table 2.12 Summary of Averages Level of Bottom DO Level of Baseline, Impact and Post-construction Monitoring (in mg/L)
Monitoring Station |
Tide |
Average Baseline Monitoring |
Average Impact Monitoring |
Post Construction Monitoring |
||||||
|
Nov 2013 - Oct 2014 |
Nov 2014 - Oct 2015 |
Nov 2015 - Oct 2016 |
Nov 2016 - Oct 2017 |
Nov 2017 - Oct 2018 |
Nov 2018 -Oct 2019 |
|
|
||
IS12 |
Mid-ebb |
5.9 |
6.1 |
6.8 |
- |
7.3 |
6.4 |
- |
7.1 |
|
Mid-flood |
5.9 |
6.2 |
6.8 |
- |
7.4 |
6.5 |
- |
7.0 |
|
|
IS13 |
Mid-ebb |
5.9 |
6.1 |
6.7 |
- |
7.3 |
6.4 |
- |
7.1 |
|
Mid-flood |
5.9 |
6.1 |
6.8 |
- |
7.4 |
6.5 |
- |
7.0 |
|
|
IS14 |
Mid-ebb |
5.9 |
6.0 |
6.7 |
- |
7.3 |
6.4 |
- |
7.1 |
|
Mid-flood |
5.9 |
6.1 |
6.8 |
- |
7.4 |
6.4 |
- |
7.0 |
|
|
IS15 |
Mid-ebb |
5.9 |
6.0 |
6.7 |
- |
7.3 |
6.5 |
- |
7.1 |
|
Mid-flood |
6.0 |
6.1 |
6.8 |
- |
7.4 |
6.5 |
- |
7.1 |
|
|
SR10A |
Mid-ebb |
5.7 |
6.1 |
6.7 |
- |
7.3 |
6.4 |
- |
6.8 |
|
Mid-flood |
5.8 |
6.1 |
6.8 |
- |
7.4 |
6.5 |
- |
6.6 |
|
|
SR8 |
Mid-ebb |
6.0 |
6.2 |
6.8 |
- |
7.3 |
6.5 |
- |
7.2 |
|
Mid-flood |
5.8 |
6.2 |
6.8 |
- |
7.4 |
6.6 |
- |
7.1 |
|
|
SR9 |
Mid-ebb |
5.8 |
6.1 |
6.8 |
- |
7.3 |
6.5 |
- |
7.2 |
|
Mid-flood |
5.9 |
6.2 |
6.9 |
- |
7.4 |
6.5 |
- |
7.1 |
|
|
IS(Mf)11
|
Mid-ebb |
5.9 |
- |
- |
- |
- |
- |
5.8 |
6.8 |
|
Mid-flood |
5.8 |
- |
- |
- |
- |
- |
5.9 |
6.9 |
|
|
SR7 |
Mid-ebb |
6.1 |
- |
- |
- |
- |
- |
6.3 |
7.0 |
|
Mid-flood |
5.9 |
- |
- |
- |
- |
- |
6.3 |
6.9 |
|
|
IS17 |
Mid-ebb |
5.7 |
- |
- |
- |
- |
- |
5.9 |
6.8 |
|
Mid-flood |
5.8 |
- |
- |
- |
- |
- |
6.1 |
6.9 |
|
|
IS(Mf)16 |
Mid-ebb |
5.9 |
- |
- |
- |
- |
- |
6.1 |
6.9 |
|
Mid-flood |
6.0 |
- |
- |
- |
- |
- |
6.4 |
7.0 |
|
|
IS(Mf)9
|
Mid-ebb |
6.6 |
- |
- |
- |
- |
- |
6.6 |
7.1 |
|
Mid-flood |
6.7 |
- |
- |
- |
- |
- |
6.5 |
7.0 |
|
|
IS8(N)
|
Mid-ebb |
6.2 |
- |
- |
- |
- |
- |
6.4 |
7.0 |
|
Mid-flood |
6.3 |
- |
- |
- |
- |
- |
6.6 |
7.0 |
|
|
SR4(N2)
|
Mid-ebb |
6.0 |
- |
- |
- |
- |
- |
6.1 |
7.0 |
|
Mid-flood |
6.2 |
- |
- |
- |
- |
- |
6.5 |
6.9 |
|
|
SR4a
|
Mid-ebb |
5.3 |
- |
- |
- |
- |
- |
6.0 |
6.9 |
|
Mid-flood |
5.2 |
- |
- |
- |
- |
- |
6.3 |
6.9 |
|
Table 2.13 Summary of Averages Level of Depth-Averaged Turbidity Level of Baseline, Impact and Post-construction Monitoring
Monitoring Station |
Tide |
Average Baseline Monitoring |
Average Impact Monitoring |
Post Construction Monitoring |
||||||
|
Nov 2013 - Oct 2014 |
Nov 2014 - Oct 2015 |
Nov 2015 - Oct 2016 |
Nov 2016 - Oct 2017 |
Nov 2017 - Oct 2018 |
Nov 2018 -Oct 2019 |
|
|
||
IS12 |
Mid-ebb |
10.7 |
5.1 |
6.6 |
- |
6.7 |
7.6 |
- |
5.3 |
|
Mid-flood |
9.8 |
5.1 |
6.5 |
- |
6.6 |
8.5 |
- |
5.5 |
|
|
IS13 |
Mid-ebb |
9.2 |
5.1 |
6.6 |
- |
6.7 |
9.6 |
- |
5.6 |
|
Mid-flood |
9.5 |
5.0 |
6.6 |
- |
6.5 |
10.3 |
- |
5.4 |
|
|
IS14 |
Mid-ebb |
9.3 |
5.0 |
6.7 |
- |
6.7 |
8.5 |
- |
5.4 |
|
Mid-flood |
9.4 |
5.0 |
6.6 |
- |
6.6 |
11.6 |
- |
5.6 |
|
|
IS15 |
Mid-ebb |
9.8 |
5.1 |
6.7 |
- |
6.7 |
6.0 |
- |
5.3 |
|
Mid-flood |
9.8 |
5.1 |
6.5 |
- |
6.5 |
11.0 |
- |
4.5 |
|
|
SR10A |
Mid-ebb |
7.1 |
4.9 |
6.5 |
- |
6.6 |
6.3 |
- |
3.5 |
|
Mid-flood |
7.0 |
4.8 |
6.4 |
- |
6.5 |
7.1 |
- |
4.2 |
|
|
SR8 |
Mid-ebb |
11.0 |
5.0 |
6.5 |
- |
6.5 |
7.2 |
- |
5.5 |
|
Mid-flood |
10.1 |
5.0 |
6.4 |
- |
6.4 |
7.9 |
- |
5.0 |
|
|
SR9 |
Mid-ebb |
7.2 |
4.9 |
6.6 |
- |
6.6 |
6.3 |
- |
5.0 |
|
Mid-flood |
8.5 |
4.9 |
6.5 |
- |
6.4 |
7.5 |
- |
4.4 |
|
|
IS(Mf)11 |
Mid-ebb |
10.7 |
- |
- |
- |
- |
- |
5.9 |
6.4 |
|
Mid-flood |
12.9 |
- |
- |
- |
- |
- |
7.9 |
7.7 |
|
|
SR7 |
Mid-ebb |
8.7 |
- |
- |
- |
- |
- |
5.5 |
5.6 |
|
Mid-flood |
11.7 |
- |
- |
- |
- |
- |
7.3 |
7.2 |
|
|
IS17 |
Mid-ebb |
9.8 |
- |
- |
- |
- |
- |
5.9 |
8.0 |
|
Mid-flood |
12.1 |
- |
- |
- |
- |
- |
5.8 |
6.1 |
|
|
IS(Mf)16 |
Mid-ebb |
8.9 |
- |
- |
- |
- |
- |
6.8 |
7.2 |
|
Mid-flood |
11.3 |
- |
- |
- |
- |
- |
7.2 |
6.6 |
|
|
IS(Mf)9
|
Mid-ebb |
8.2 |
- |
- |
- |
- |
- |
6.0 |
6.0 |
|
Mid-flood |
10.2 |
- |
- |
- |
- |
- |
7.2 |
8.1 |
|
|
IS8(N)
|
Mid-ebb |
8.4 |
- |
- |
- |
- |
- |
7.4 |
9.2 |
|
Mid-flood |
11.9 |
- |
- |
- |
- |
- |
6.4 |
6.2 |
|
|
SR4(N2)
|
Mid-ebb |
8.9 |
- |
- |
- |
- |
- |
7.0 |
9.2 |
|
Mid-flood |
10.3 |
- |
- |
- |
- |
- |
6.0 |
6.8 |
|
|
SR4a
|
Mid-ebb |
8.9 |
- |
- |
- |
- |
- |
5.8 |
6.1 |
|
Mid-flood |
7.8 |
- |
- |
- |
- |
- |
5.8 |
6.1 |
|
Table 2.14 Summary of Averages Level of Depth-Averaged SS Level of Baseline, Impact and Post-construction Monitoring
Monitoring Station |
Tide |
Average Baseline Monitoring |
Average Impact Monitoring |
Post Construction Monitoring |
||||||
|
Nov 2013 - Oct 2014 |
Nov 2014 - Oct 2015 |
Nov 2015 - Oct 2016 |
Nov 2016 - Oct 2017 |
Nov 2017 - Oct 2018 |
Nov 2018 -Oct 2019 |
|
|
||
IS12 |
Mid-ebb |
9.2 |
5.3 |
7.7 |
- |
9.1 |
10.3 |
- |
5.1 |
|
Mid-flood |
9.5 |
5.4 |
7.7 |
- |
8.8 |
10.0 |
- |
5.5 |
|
|
IS13 |
Mid-ebb |
10.0 |
5.2 |
7.7 |
- |
9.3 |
10.3 |
- |
5.9 |
|
Mid-flood |
10.5 |
5.2 |
7.7 |
- |
9.0 |
12.1 |
- |
5.5 |
|
|
IS14 |
Mid-ebb |
10.4 |
5.3 |
7.8 |
- |
8.4 |
8.6 |
- |
4.9 |
|
Mid-flood |
9.7 |
5.3 |
7.7 |
- |
8.1 |
13.7 |
- |
6.2 |
|
|
IS15 |
Mid-ebb |
9.6 |
5.3 |
7.7 |
- |
9.1 |
7.7 |
- |
5.1 |
|
Mid-flood |
11.0 |
5.4 |
7.6 |
- |
9.0 |
13.4 |
- |
4.7 |
|
|
SR10A |
Mid-ebb |
10.3 |
5.3 |
7.6 |
- |
8.5 |
7.4 |
- |
4.2 |
|
Mid-flood |
10.2 |
5.2 |
7.5 |
- |
8.3 |
9.8 |
- |
4.8 |
|
|
SR8 |
Mid-ebb |
10.1 |
5.2 |
7.6 |
- |
8.4 |
8.5 |
- |
5.4 |
|
Mid-flood |
11.3 |
5.3 |
7.5 |
- |
8.3 |
10.7 |
- |
4.9 |
|
|
SR9 |
Mid-ebb |
8.8 |
5.2 |
7.6 |
- |
8.4 |
7.8 |
- |
4.7 |
|
Mid-flood |
9.9 |
5.3 |
7.5 |
- |
8.2 |
10.0 |
- |
4.6 |
|
|
IS(Mf)11 |
Mid-ebb |
9.8 |
- |
- |
- |
- |
- |
6.5 |
6.4 |
|
Mid-flood |
10.3 |
- |
- |
- |
- |
- |
8.1 |
7.9 |
|
|
SR7 |
Mid-ebb |
11.4 |
- |
- |
- |
- |
- |
6.2 |
6.2 |
|
Mid-flood |
10.4 |
- |
- |
- |
- |
- |
8.0 |
6.8 |
|
|
IS17 |
Mid-ebb |
10.7 |
- |
- |
- |
- |
- |
7.2 |
8.7 |
|
Mid-flood |
11.7 |
- |
- |
- |
- |
- |
7.0 |
7.4 |
|
|
IS(Mf)16 |
Mid-ebb |
11.3 |
- |
- |
- |
- |
- |
8.1 |
8.1 |
|
Mid-flood |
10.4 |
- |
- |
- |
- |
- |
8.2 |
7.4 |
|
|
IS(Mf)9
|
Mid-ebb |
10.9 |
- |
- |
- |
- |
- |
7.6 |
7.1 |
|
Mid-flood |
14.7 |
- |
- |
- |
- |
- |
8.3 |
8.4 |
|
|
IS8(N)
|
Mid-ebb |
11.3 |
- |
- |
- |
- |
- |
8.5 |
11.3 |
|
Mid-flood |
13.5 |
- |
- |
- |
- |
- |
7.7 |
7.0 |
|
|
SR4(N2)
|
Mid-ebb |
11.1 |
- |
- |
- |
- |
- |
7.4 |
9.9 |
|
Mid-flood |
12.2 |
- |
- |
- |
- |
- |
7.6 |
6.3 |
|
|
SR4a
|
Mid-ebb |
9.1 |
- |
- |
- |
- |
- |
6.9 |
6.9 |
|
Mid-flood |
9.8 |
- |
- |
- |
- |
- |
6.8 |
6.4 |
|
Fifty-eight (58) Action Level of Dissolved Oxygen (Surface and Middle), eighty-three (83) Action Level and eighteen (18) Limit Level exceedances of Dissolved Oxygen (Bottom), twenty-seven (27) Action Level and one (1) Limit Level exceedances of Suspended Solids (SS) were recorded for water quality monitoring during the impact monitoring period. Summary of the exceedances is reported in Table 2.15. Actions were taken in accordance with the Event Action Plan as presented in Appendix F. The exceedances were considered not related to this Contract upon further investigation. Detailed investigation reports on exceedances were presented in Second, Fifth, Forty-ninth, Fiftieth and Sixty-seventh to Seventy-third Monthly EM&A Reports.
A total of 12 monitoring events were undertaken for post-construction water quality monitoring. Post-construction monitoring results are presented graphically in Appendix E and detailed post-construction water quality monitoring data were reported in the Seventy-Seventh and Seventy-Eighth Monthly EM&A Reports.
A total of 9 monitoring events were undertaken for operational phase water quality monitoring. Operational phase monitoring results are presented graphically in Appendix E and detailed operational phase water quality monitoring data were reported in the Eightieth to Eighty-Eighth Monthly EM&A Reports
Table 2.15 Summary of Action Level and Limit Level Exceedance of Water Quality Monitoring
Period |
Station |
Parameter |
Number of Action Level Exceedance(s) |
Number of Limit Level Exceedance(s) |
December 2013 |
IS15 |
SS |
1 |
- |
SR8 |
SS |
1 |
- |
|
SR9 |
SS |
1 |
- |
|
IS15 |
SS |
1 |
- |
|
SR9 |
SS |
1 |
- |
|
March 2014 |
IS12 |
SS |
- |
1 |
IS14 |
SS |
1 |
- |
|
November 2017 |
IS12 |
SS |
2 |
- |
IS13 |
SS |
2 |
- |
|
SR8 |
SS |
2 |
- |
|
SR10A |
SS |
1 |
- |
|
SR9 |
SS |
1 |
- |
|
IS14 |
SS |
1 |
- |
|
IS15 |
SS |
1 |
- |
|
December 2017 |
IS15 |
SS |
2 |
- |
SR10A |
SS |
1 |
- |
|
IS14 |
SS |
1 |
- |
|
May 2019 |
IS8 |
SS |
1 |
- |
SR4(N) |
SS |
1 |
- |
|
July 2019 |
IS(Mf)11 |
Surface & Middle DO |
4 |
- |
IS(Mf)11 |
Bottom DO |
5 |
11 |
|
IS(Mf)16 |
Surface & Middle DO |
1 |
- |
|
IS(Mf)16 |
Bottom DO |
4 |
1 |
|
IS(Mf)9 |
Bottom DO |
1 |
- |
|
IS17 |
Surface & Middle DO |
3 |
- |
|
IS17 |
Bottom DO |
11 |
1 |
|
IS8(N) |
Bottom DO |
2 |
1 |
|
SR4(N2) |
Surface & Middle DO |
1 |
- |
|
SR4(N2) |
Bottom DO |
7 |
- |
|
SR4a |
Surface & Middle DO |
1 |
- |
|
SR4a |
Bottom DO |
7 |
- |
|
SR7 |
Surface & Middle DO |
2 |
- |
|
SR7 |
Bottom DO |
3 |
- |
|
August 2019 |
IS(Mf)11 |
Surface & Middle DO |
6 |
- |
IS(Mf)11 |
Bottom DO |
7 |
3 |
|
IS(Mf)16 |
Surface & Middle DO |
2 |
- |
|
IS(Mf)16 |
Bottom DO |
2 |
- |
|
IS(Mf)9 |
Surface & Middle DO |
1 |
- |
|
IS17 |
Surface & Middle DO |
6 |
- |
|
IS17 |
Bottom DO |
7 |
- |
|
IS8(N) |
Surface & Middle DO |
2 |
- |
|
IS8(N) |
Bottom DO |
2 |
- |
|
SR4(N2) |
Surface & Middle DO |
4 |
- |
|
SR4(N2) |
Bottom DO |
1 |
1 |
|
SR4a |
Surface & Middle DO |
3 |
- |
|
SR4a |
Bottom DO |
6 |
- |
|
SR7 |
Surface & Middle DO |
2 |
- |
|
SR7 |
Bottom DO |
3 |
- |
|
SR7 |
SS |
1 |
- |
|
September 2019 |
IS(Mf)11 |
Surface & Middle DO |
4 |
- |
IS(Mf)11 |
Bottom DO |
3 |
- |
|
IS(Mf)16 |
Surface & Middle DO |
1 |
- |
|
IS(Mf)9 |
Surface & Middle DO |
2 |
- |
|
IS(Mf)9 |
SS |
1 |
- |
|
IS17 |
Surface & Middle DO |
5 |
- |
|
IS17 |
Bottom DO |
6 |
- |
|
IS8(N) |
Surface & Middle DO |
2 |
- |
|
SR4(N2) |
Surface & Middle DO |
2 |
- |
|
SR4(N2) |
Bottom DO |
3 |
- |
|
SR4a |
Surface & Middle DO |
1 |
- |
|
SR4a |
Bottom DO |
2 |
- |
|
SR7 |
Surface & Middle DO |
3 |
- |
|
SR7 |
Bottom DO |
1 |
- |
|
October 2019 |
SR7 |
SS |
2 |
- |
November 2019 |
IS(Mf)16 |
SS |
1 |
- |
In general, DO, turbidity and suspended solids levels were varied across the impact monitoring period and these variations were however not consistent throughout the impact monitoring period.
According to the EIA prediction, no SS exceedance was anticipated from this Project at the water sensitive receivers nearby the vicinity of Contract (WSR 22a, WSR 22b and WSR 22c). Although exceedances on depth-averaged SS were recorded in the impact monitoring period, the exceedances were considered not related to this Contract upon further investigation. The impact monitoring results were considered influenced by fluctuation of background regional water quality instead of indicating any unacceptable impacts from this Contract.
During the post-construction water quality monitoring, no non-compliance of the water quality limit for DO, turbidity and suspended solids levels was recorded.
With the implementation of the monitoring programme for water quality and environmental mitigation measures, the EM&A programme was considered adequate and effective in monitoring and minimizing the potential environmental impacts from the Contract.
Impact dolphin monitoring is required to be conducted by a qualified dolphin specialist team to evaluate whether there have been any effects on the dolphins. In order to fulfil the EM&A requirements and make good use of available resources, Contract No. HY/2012/08 has taken over the responsibility for implementation of dolphin monitoring from HZMB HKLR Contract No. HY/2011/03 since October 2019.
According to the EM&A Manual, Operational Phase Monitoring on dolphin monitoring shall be undertaken based upon the frequency of forty-eight, one-day survey events at a frequency of 2 per month over a period of 24 months following cessation of the construction. Post construction (operational) phase dolphin monitoring commenced since June 2019.
Table 2.16 summarizes the equipment used for the impact dolphin monitoring.
Table 2.16 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 and operational phase dolphin monitoring were carried out in the NEL and NWL along the line transect as depicted in Figure 2.3. The co-ordinates of all transect lines are shown in Table 2.17 below.
Table 2.17 Impact and Operational 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* |
Remarks: The coordinates of several starting and ending points have been revised since August 2017 due to the presence of a work zone to the north of the airport platform with intense construction activities in association with the construction of the third runway expansion for the Hong Kong International Airport. Co-ordinates in red and marked with asterisk are revised co-ordinates of transect line.
The Action and Limit levels of dolphin impact monitoring are shown in Appendix C. The Event Action Plan is presented in Appendix F.
The dolphin monitoring schedules for the monitoring period are provided in the First to Eighty-ninth Monthly EM&A Reports.
A total of 158 and 19 monitoring events for impact dolphin monitoring events and operational phase dolphin monitoring were undertaken during the course of this Contract, respectively. Results of the operational phase dolphin monitoring between April 2021 and August 2021 were presented in Ninety to Ninety-fourth Monthly EM&A Reports under Contract No. HY/2012/08. Results of the operational phase dolphin monitoring between September 2021 and May 2022 were/will be presented in Monthly EM&A Reports under Agreement No. HMWSD 1/202(EP).
Summary of the average encounter rates of Chinese White Dolphins in NEL and NWL survey areas and comparison of average dolphin group size are shown in Tables 2.18 and 2.19.
Table 2.18 Average Dolphin Encounter Rates
|
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) |
||
Northeast Lantau |
Northwest Lantau |
Northeast Lantau |
Northwest Lantau |
|
Impact Phase (2018-19) |
0.00 |
1.42 ± 1.80 |
0.00 |
3.62 ± 4.93 |
Impact Phase (2017-18) |
0.00 |
2.68 ± 3.04 |
0.00 |
9.02 ± 14.63 |
Impact Phase (2016-17) |
0.00 |
2.35 ± 2.62 |
0.00 |
8.57 ± 11.05 |
Impact Phase (2015-16) |
0.00 |
2.10 ± 1.83 |
0.00 |
8.54 ± 8.53 |
Impact Phase (2014-15) |
0.11 ± 0.54 |
2.54 ± 2.49 |
0.11 ± 0.54 |
11.64 ± 14.04 |
Impact Phase (2013-14) |
0.22 ± 0.74 |
6.93 ± 4.08 |
0.76 ± 2.59 |
26.31 ± 17.56 |
Transitional Phase (2012-13) |
1.70 ± 2.26 |
7.68 ± 4.36 |
4.75 ± 7.61 |
27.51 ± 18.06 |
Baseline Phase (2011-12) |
6.05 ± 5.04 |
7.75 ± 5.69 |
19.91 ± 21.30 |
29.57 ± 26.96 |
Comparison of average daily dolphin encounter rates from six years of impact monitoring phases (November 2013 – October 2019), transitional phase (November 2012 – October 2013) and baseline phase monitoring periods (February 2011 – January 2012). (± denotes the standard deviation of the value)
Table 2.19 Comparison of Average Dolphin Group Size
|
Average Dolphin Group Size |
||
Overall |
Northeast Lantau |
Northwest Lantau |
|
Impact Phase (2018-19) |
2.52 ± 1.45 (n = 27) |
0.00 |
2.52 ± 1.45 (n = 27) |
Impact Phase (2017-18) |
3.12 ± 2.86 (n = 42) |
0.00 |
3.12 ± 2.86 (n = 42) |
Impact Phase (2016-17) |
3.51 ± 2.68 (n = 43) |
0.00 |
3.51 ± 2.68 (n = 43) |
Impact Phase (2015-16) |
3.73 ± 3.14 (n = 45) |
1.00 (n = 1) |
3.80 ± 3.14 (n = 44) |
Impact Phase (2014-15) |
4.24 ± 3.15 (n = 54) |
1.00 (n = 1) |
4.30 ± 3.15 (n = 53) |
Impact Phase (2013-14) |
3.76 ± 2.57 (n = 136) |
5.00 ± 2.71 (n = 4) |
3.73 ± 2.57 (n = 132) |
Transitional Phase (2012-13) |
3.37 ± 2.98 (n = 186) |
2.64 ± 2.38 (n = 22) |
3.47 ± 3.05 (n = 164) |
Baseline Phase (2011-12) |
3.32 ± 2.86 (n = 288) |
2.80 ± 2.35 (n = 79) |
3.52 ± 3.01 (n = 209) |
Comparison of average dolphin group size from six years of impact monitoring phases (November 2013 – October 2019), transitional phase (November 2012 – October 2013) and baseline phase monitoring periods (February 2011 – January 2012). (± denotes the standard deviation of the value)
Eleven (11) Action Level and twenty (20) Limit Level exceedances were recorded for impact dolphin monitoring during the impact monitoring period. Three (3) Limit Level exceedances were recorded for quarterly post-construction (operational) dolphin monitoring data between June 2020 and March 2021. Detailed investigation reports on exceedances were presented in First to Twenty-ninth Quarterly EM&A Reports.
According to the baseline results of the approved EIA Report, the dolphin groups were largely sighted near waters around Lung Kwu Chau and Sha Chau. There was no dolphin sighted along the alignment of this Contract. Dolphins are observed heavily utilized area around Lung Kwu Chau and less frequently in the North Lantau region where the works area of this Contract is situated. The monitoring results in the impact monitoring period are considered to be in line with the EIA predictions, and the review of monitoring data suggested that no unacceptable impacts was noted from the marine works under this Contract.
With the implementation of the monitoring programme for dolphin monitoring, the EM&A programme was considered adequate and effective in monitoring and minimizing the potential environmental impacts from the Contract.
Daily 250 m marine mammal exclusion zone monitoring was undertaken during the period of marine works under this Contract. One sighting of the Indo-Pacific humpback dolphin (i.e. Chinese White Dolphin) Sousa chinensis was recorded on 20 February 2014 during the exclusion zone monitoring. The dolphin group of three was sighted within the 250 m marine mammal exclusion zone from a dredging barge sighting platform by the marine mammal observer. The marine dredging work was subsequently suspended until the observer has confirmed that the area is continuously clear of dolphin for a period of 30 minutes. The Dolphin Intrusion Report is presented in Appendix J of the Forth Monthly EM&A Report.
Passive Acoustic Monitoring (PAM) was also implemented for the detection of marine mammal when dredging, reclamation or marine sheet piling works were carried out outside the daylight hours under this Contract.
Four (4) Post-Translocation Coral Monitoring Surveys were conducted on 17 January 2014, 16 April 2014, 24 July 2014 and 23 October 2014 and the results were provided in the First to Fourth Quarterly Post-Translocation Coral Monitoring Report. The findings indicated that no Action or Limit Levels exceedances was recorded for coral monitoring as increase in percentage of partial mortality was not detected for both the tagged translocated and natural coral colonies when comparing to the pre-translocation dataset.
Site inspections were carried out on weekly basis to monitor the implementation of proper environmental pollution control and mitigation measures under the Contract. A total of 380 site inspections were carried out in the impact monitoring period. Key observations were summarized in the section of EM&A Site Inspection in the First to Eighty-ninth Monthly EM&A Reports. The Contractor has rectified all of the observations identified during environmental site inspections in the impact monitoring period.
Wastes generated during the impact monitoring period include construction wastes (inert and non-inert), imported fill, recyclable materials, chemical waste and marine sediments. The summary of waste generation amount is presented in Appendix G.
Waste monitoring and audit
programme has been undertaken during the impact monitoring
period. Wastes arising from this Contract have been managed in
accordance with the recommendations in the EIA Report, the EM&A Manual, the
Waste Management Plan and other relevant statutory requirements.
A summary of the environmental licenses and permits for this Contract is presented in Table 2.20 below.
Table 2.20 Summary of Environmental Licenses and Permits
License/ Permit |
License or Permit No. |
Date of Issue |
Date of Expiry |
License/ Permit Holder |
Remarks |
Environmental Permit |
EP-354/2009/A |
08-Dec-10 |
NA |
HyD |
Tuen Mun- Chek Lap Kok Link |
Environmental Permit |
EP-354/2009/B |
28-Jan-14 |
NA |
HyD |
Tuen Mun- Chek Lap Kok Link |
Environmental Permit |
EP-354/2009/D |
13-Mar-15 |
N/A |
HyD |
Tuen Mun- Chek Lap Kok Link |
Chemical Waste Registration |
5213-422-D2516-01 |
10-Sep-13 |
Throughout the Contract |
DBJV |
- |
Chemical Waste Registration |
5213-951-D2591-01 |
25-May-16 |
Throughout the Contract |
DBJV |
Southern Landfall |
Chemical Waste Registration |
5213-422-D2516-02 |
18-Jan-17 |
Throughout the Contract |
DBJV |
Northern Landfall |
Construction Dust Notification |
363510 |
19-Aug-13 |
Throughout the Contract |
DBJV |
- |
Construction Dust Notification |
403620 |
10-Jun-16 |
Throughout the Contract |
DBJV |
Southern Landfall |
Construction Dust Notification |
435068 |
27-Jun-18 |
Throughout the Contract |
DBJV |
Northern Landfall |
Construction Dust Notification |
435505 |
12-Jul-18 |
Throughout the Contract |
DBJV |
Southern Landfall |
Construction Waste Disposal Account |
7018108 |
19-Aug-13 |
Throughout the Contract |
DBJV |
Waste disposal in Contract HY/2012/08 |
Construction Waste Disposal Account |
7021715 |
12-Jan-17 |
12-Apr-17 |
DBJV |
Vessel disposal |
Waste Water Discharge License |
WT00017707-2013 |
18-Nov-13 |
30-Nov-18 |
DBJV |
For works in site WA18 |
Waste Water Discharge License |
WT00018433-2014 |
06-Mar-14 |
31-Mar-19 |
DBJV |
For works in site Portion N6 |
Waste Water Discharge License |
WT00019248-2014 |
05-Jun-14 |
30-Jun-19 |
DBJV |
For site Portion N6 and Reclamation Area E |
Waste Water Discharge License |
WT00025944-2016 |
15-Dec-16 |
31-Dec-21 |
DBJV |
Southern Landfall |
Waste Water Discharge License |
WT00031435-2018 |
02-Aug-18 |
31-Aug-23 |
DBJV |
Southern Landfall |
Waste Water Discharge License |
WT00034060-2019 |
25-Jul-19 |
30-Jun-24 |
DBJV |
Northern Landfall (4 Discharge Point) |
Marine Dumping Permit |
EP/MD/14-072 |
01-Nov-13 |
30-Apr-14 |
DBJV |
For Type 1 |
Marine Dumping Permit |
EP/MD/14-071 |
01-Dec-13 |
31-Dec-13 |
DBJV |
For Type 1 (dedicated site) and Type 2 |
Marine Dumping Permit |
EP/MD/14-108 |
01-Jan-14 |
31-Jan-14 |
DBJV |
For Type 1 (dedicated site) and Type 2 |
Marine Dumping Permit |
EP/MD/14-124 |
01-Feb-14 |
28-Feb-14 |
DBJV |
For Type 1 (dedicated site) and Type 2 |
Marine Dumping Permit |
EP/MD/14-140 |
01-Mar-14 |
31-Mar-14 |
DBJV |
For Type 1 (dedicated site) and Type 2 |
Marine Dumping Permit |
EP/MD/14-157 |
03-Apr-14 |
30-Apr-14 |
DBJV |
For Type 1 (dedicated site) and Type 2 |
Marine Dumping Permit |
EP/MD/15-007 |
01-May-14 |
31-May-14 |
DBJV |
For Type 1 (dedicated site) and Type 2 |
Marine Dumping Permit |
EP/MD/15-006 |
01-May-14 |
31-Oct-14 |
DBJV |
For Type 1 |
Marine Dumping Permit |
EP/MD/15-026 |
31-May-14 |
29-Jun-14 |
DBJV |
For Type 1 (dedicated site) and Type 2 |
Marine Dumping Permit |
EP/MD/15-045 |
30-Jun-14 |
29-Jul-14 |
DBJV |
For Type 1 (dedicated site) and Type 2 |
Marine Dumping Permit |
EP/MD/15-061 |
01-Aug-14 |
31-Aug-14 |
DBJV |
For Type 1 (dedicated site) and Type 2 |
Marine Dumping Permit |
EP/MD/15-100 |
20-Oct-14 |
19-Nov-14 |
DBJV |
For Type 1 (dedicated site) and Type 2 |
Marine Dumping Permit |
EP/MD/15-142 |
07-Nov-14 |
31-Jan-15 |
DBJV |
For Type 1 (Open Sea Disposal) |
Marine Dumping Permit |
EP/MD/17-015 |
07-May-16 |
06-Jun-16 |
DBJV |
Southern Landfall |
Marine Dumping Permit |
EP/MD/17-036 |
07-Jun-16 |
06-Jul-16 |
DBJV |
Southern Landfall |
Marine Dumping Permit |
EP/MD/17-070 |
07-Aug-16 |
06-Sep-16 |
DBJV |
Southern Landfall |
Marine Dumping Permit |
EP/MD/17-086 |
09-Sep-16 |
08-Oct-16 |
DBJV |
Southern Landfall |
Marine Dumping Permit |
EP/MD/17-108 |
16-Nov-16 |
15-Dec-16 |
DBJV |
Southern Landfall |
Marine Dumping Permit |
EP/MD/17-103 |
16-Dec-16 |
13-Jun-17 |
DBJV |
Northern Landfall |
Marine Dumping Permit |
EP/MD/17-121 |
16-Dec-16 |
15-Jan-17 |
DBJV |
Northern Landfall |
Marine Dumping Permit |
EP/MD/17-164 |
16-Jan-17 |
15-Feb-17 |
DBJV |
Northern Landfall |
Marine Dumping Permit |
EP/MD/18-006 |
07-May-17 |
06-Jun-17 |
DBJV |
Southern Landfall |
Marine Dumping Permit |
EP/MD/18-036 |
21-Oct-17 |
20-Nov-17 |
DBJV |
Type 1 (Dedicated site) and Type 2 (Confined Marine Disposal) |
Marine Dumping Permit |
EP/MD/18-087 |
21-Nov-17 |
20-Dec-17 |
DBJV |
Type 1 (Dedicated site) and Type 2 (Confined Marine Disposal) |
Marine Dumping Permit |
EP/MD/18-098 |
21-Dec-17 |
20-Jan-18 |
DBJV |
Type 1 (Dedicated site) and Type 2 (Confined Marine Disposal) |
Marine Dumping Permit |
EP/MD/18-118 |
21-Jan-18 |
20-Feb-18 |
DBJV |
Type 1 (Dedicated site) and Type 2 (Confined Marine Disposal) |
Marine Dumping Permit |
EP/MD/18-125 |
21-Feb-18 |
20-Mar-18 |
DBJV |
Type 1 (Dedicated site) and Type 2 (Confined Marine Disposal) |
Marine Dumping Permit |
EP/MD/18-133 |
22-Mar-18 |
21-Apr-18 |
DBJV |
Type 1 (Dedicated site) and Type 2 (Confined Marine Disposal) |
Marine Dumping Permit |
EP/MD/19-001 |
24-Apr-18 |
23-May-18 |
DBJV |
Type 1 (Dedicated site) and Type 2 (Confined Marine Disposal) |
Marine Dumping Permit |
EP/MD/19-009 |
28-Jun-18 |
27-Jul-18 |
DBJV |
Type 1 (Dedicated site) and Type 2 (Confined Marine Disposal) |
Marine Dumping Permit |
EP/MD/19-024 |
28-Aug-18 |
27-Sep-18 |
DBJV |
Type 1 (Dedicated site) and Type 2 (Confined Marine Disposal) |
Marine Dumping Permit |
EP/MD/19-015 |
05-Sep-18 |
04-Mar-19 |
DBJV |
Catepillar Area |
Marine Dumping Permit |
EP/MD/19-034 |
28-Sep-18 |
27-Oct-18 |
DBJV |
SVS |
Marine Dumping Permit |
EP/MD/19-041 |
05-Oct-18 |
04-Nov-18 |
DBJV |
Type 1 (Dedicated site) and Type 2 (Confined Marine Disposal) |
Marine Dumping Permit |
EP/MD/19-057 |
05-Nov-18 |
04-Dec-18 |
DBJV |
Type 1 (Dedicated site) and Type 2 (Confined Marine Disposal) |
Marine Dumping Permit |
EP/MD/19-063 |
19-Nov-18 |
18-May-19 |
DBJV |
Type 1 (Open Sea Disposal) |
Marine Dumping Permit |
EP/MD/19-083 |
05-Jan-19 |
04-Feb-19 |
DBJV |
Type 1 (Dedicated site) and Type 2 (Confined Marine Disposal) |
Marine Dumping Permit |
EP/MD/19-097 |
05-Feb-19 |
04-Mar-19 |
DBJV |
Type 1 (Dedicated site) and Type 2 (Confined Marine Disposal) |
Marine Dumping Permit |
EP/MD/19-109 |
05-Mar-19 |
04-Apr-19 |
DBJV |
Type 1 (Dedicated site) and Type 2 (Confined Marine Disposal) |
Marine Dumping Permit |
EP/MD/19-121 |
05-Apr-19 |
04-May-19 |
DBJV |
Type 1 (Dedicated site) and Type 2 (Confined Marine Disposal) |
Marine Dumping Permit |
EP/MD/20-001 |
05-May-19 |
04-Jun-19 |
DBJV |
Type 1 (Dedicated site) and Type 2 (Confined Marine Disposal) |
Marine Dumping Permit |
EP/MD/20-013 |
19-May-19 |
18-Nov-19 |
DBJV |
Type 1 (Open Sea Disposal) |
Construction Noise Permit |
GW-RW0691-13 |
15-Oct-13 |
14-Apr-14 |
DBJV |
For Dredging and Reclamation Works |
Construction Noise Permit |
GW-RW0035-13 |
27-Jan-14 |
26-Jul-14 |
DBJV |
For Dredging and Reclamation Works |
Construction Noise Permit |
GW-RW0095-14 |
10-Feb-14 |
09-Aug-14 |
DBJV |
For Dredging and Reclamation Works |
Construction Noise Permit |
GW-RW0822-13 |
14-Nov-13 |
10-May-14 |
DBJV |
For works in site WA18 |
Construction Noise Permit |
GW-RS0814-13 |
15-Nov-13 |
10-May-14 |
DBJV |
For works in site WA23 |
Construction Noise Permit |
GW-RW0029-14 |
27-Jan-14 |
26-Jul-14 |
DBJV |
For Portion N6 |
Construction Noise Permit |
GW-RW0077-14 |
17-Feb-14 |
16-Aug-14 |
DBJV |
For Portion N6 |
Construction Noise Permit |
GW-RW0223-14 |
29-Mar-14 |
28-Sep-14 |
DBJV |
For works in site Portion N6 |
Construction Noise Permit |
GW-RW0234-14 |
29-Mar-14 |
28-Sep-14 |
DBJV |
For Dredging and Reclamation Works |
Construction Noise Permit |
GW-RS0362-14 |
11-May-14 |
10-Nov-14 |
DBJV |
For works in site WA23 |
Construction Noise Permit |
GW-RW0550-14 |
25-Jul-14 |
24-Jan-15 |
DBJV |
For Dredging and Reclamation Works |
Construction Noise Permit |
GW-RS0674-14 |
18-Sep-14 |
17-Mar-15 |
DBJV |
For GI works at Southern Landfall |
Construction Noise Permit |
GW-RW0706-14 |
29-Sep-14 |
28-Mar-15 |
DBJV |
For Portion N6 |
Construction Noise Permit |
GW-RW0674-14 |
18-Sep-14 |
17-Mar-15 |
DBJV |
For GI Works at Southern Landfall |
Construction Noise Permit |
GW-RW0970-14 |
17-Dec-14 |
14-May-15 |
DBJV |
For Dredging and Reclamation Works |
Construction Noise Permit |
GW-RS0847-14 |
11-May-14 |
10-May-15 |
DBJV |
For works in site WA23 |
Construction Noise Permit |
GW-RW0350-15 |
14-Jul-15 |
13-Dec-15 |
DBJV |
For site WA23 |
Construction Noise Permit |
GW-RW0847-14 |
11-Nov-14 |
10-May-15 |
DBJV |
For site WA23 |
Construction Noise Permit |
GW-RW0123-15 |
20-Mar-15 |
19-May-15 |
DBJV |
For Dredging and Reclamation Works |
Construction Noise Permit |
GW-RW0150-15 |
01-Apr-15 |
30-Sep-15 |
DBJV |
For GI Works at Southern Landfall |
Construction Noise Permit |
GW-RW0204-15 |
11-May-15 |
10-Nov-15 |
DBJV |
For site WA23 |
Construction Noise Permit |
GW-RW0216-15 |
20-May-15 |
19-Jul-15 |
DBJV |
For Dredging and Reclamation Works |
Construction Noise Permit |
GW-RW0140-15 |
29-Mar-15 |
28-Sep-15 |
DBJV |
For Portion N6 |
Construction Noise Permit |
GW-RW0311-15 |
20-Jul-15 |
19-Oct-15 |
DBJV |
For Dredging and Reclamation Works |
Construction Noise Permit |
GW-RW1007-15 |
16-Sep-15 |
13-Mar-16 |
DBJV |
For GI Works at Southern Landfall |
Construction Noise Permit |
GW-RW0474-15 |
29-Sep-15 |
28-Mar-16 |
DBJV |
For Portion N6 |
Construction Noise Permit |
GW-RW0512-15 |
20-Oct-15 |
19-Jan-16 |
DBJV |
For Dredging and Reclamation Works |
Construction Noise Permit |
GW-RW0018-16 |
20-Jan-16 |
19-Jul-16 |
DBJV |
For Urmston Road in front of Pillar Point |
Construction Noise Permit |
GW-RW0638-15 |
14-Dec-15 |
13-Jun-16 |
DBJV |
For site WA23 |
Construction Noise Permit |
GW-RW0533-16 |
29-Sep-16 |
28-Mar-17 |
DBJV |
For Portion N6 |
Construction Noise Permit |
GW-RW0180-16 |
09-Apr-16 |
30-Sep-16 |
DBJV |
For Urmston Road in front of Pillar Point |
Construction Noise Permit |
GW-RW0450-16 |
27-Jul-16 |
19-Jan-17 |
DBJV |
For Urmston Road in front of Pillar Point |
Construction Noise Permit |
GW-RW0334-16 |
14-Jun-16 |
13-Dec-16 |
DBJV |
For site WA23A+B |
Construction Noise Permit |
GW-RW0143-16 |
29-Mar-16 |
28-Sep-16 |
DBJV |
For Portion N6 |
Construction Noise Permit |
GW-RS0324-16 |
18-Apr-16 |
17-Oct-16 |
DBJV |
For excavation works at Southern Landfall |
Construction Noise Permit |
GW-RS0860-16 |
25-Aug-16 |
24-Feb-17 |
DBJV |
For Southern Landfall |
Construction Noise Permit |
GW-RS1447-15 |
05-Jan-16 |
04-Jun-16 |
DBJV |
For excavation works at Southern Landfall |
Construction Noise Permit |
GW-RW0538-17 |
16-Oct-17 |
15-Apr-18 |
DBJV |
For Urmston Road in front of Pillar Point |
Construction Noise Permit |
GW-RW0644-16 |
30-Nov-16 |
29-May-17 |
DBJV |
For Urmston Road in front of Pillar Point |
Construction Noise Permit |
GW-RW0279-17 |
13-Jun-17 |
12-Dec-17 |
DBJV |
WA23 @ Tsing Yi |
Construction Noise Permit |
PP-RS0012-17 |
13-Jun-17 |
30-Aug-17 |
DBJV |
Southern Landfall |
Construction Noise Permit |
GW-RW0247-17 |
19-May-17 |
09-Nov-17 |
DBJV |
For Urmston Road in front of Pillar Point |
Construction Noise Permit |
GW-RW0666-16 |
13-Dec-16 |
12-Jun-17 |
DBJV |
For site WA23A+B |
Construction Noise Permit |
GW-RW0143-17 |
29-Mar-17 |
28-Sep-17 |
DBJV |
For Portion N6 |
Construction Noise Permit |
GW-RS0121-17 |
25-Feb-17 |
24-Aug-17 |
DBJV |
For Southern Landfall |
Construction Noise Permit |
GW-RS0165-17 |
01-Mar-17 |
02-Sep-17 |
DBJV |
For Southern Landfall |
Construction Noise Permit |
PP-RS0019-17 |
31-Aug-17 |
30-Nov-17 |
DBJV |
Southern Landfall (Percussive Piling) |
Construction Noise Permit |
GW-RS0713-17 |
01-Sep-17 |
28-Feb-18 |
DBJV |
Southern Landfall |
Construction Noise Permit |
GW-RS0878-17 |
11-Oct-17 |
02-Apr-18 |
DBJV |
Southern Landfall |
Construction Noise Permit |
PP-RS0026-17 |
03-Apr-17 |
31-Jul-18 |
DBJV |
Southern Landfall (Percussive Piling) |
Construction Noise Permit |
GW-RW0641-17 |
16-Dec-17 |
06-Dec-18 |
DBJV |
WA23 @ Tsing Yi |
Construction Noise Permit |
GW-RW0344-18 |
20-Aug-18 |
19-Feb-19 |
DBJV |
WA23 @ Tsing Yi |
Construction Noise Permit |
GW-RW0060-18 |
20-Feb-18 |
19-Aug-18 |
DBJV |
WA23 @ Tsing Yi |
Construction Noise Permit |
GW-RS0027-18 |
22-Jan-18 |
14-Jul-18 |
DBJV |
Southern Landfall |
Construction Noise Permit |
GW-RS0598-18 |
15-Jul-18 |
14-Jan-19 |
DBJV |
Southern Landfall |
Construction Noise Permit |
GW-RW0406-18 |
16-Oct-18 |
15-Apr-19 |
DBJV |
Urmston Road in front of Pillar Point |
Construction Noise Permit |
GW-RS0966-18 |
26-Oct-18 |
14-Apr-19 |
DBJV |
Southern Landfall |
Construction Noise Permit |
GW-RS0224-19 |
25-Mar-19 |
24-Sep-19 |
DBJV |
Southern Landfall |
Construction Noise Permit |
GW-RS0766-19 |
02-Sep-19 |
25-Feb-20 |
DBJV |
Southern Landfall |
Construction Noise Permit |
GW-RW0179-19 |
27-Apr-19 |
15-Oct-19 |
DBJV |
Urmston Road in front of Pillar Point |
Construction Noise Permit |
GW-RW0063-19 |
20-Feb-19 |
19-Aug-19 |
DBJV |
WA23 @ Tsing Yi |
Construction Noise Permit |
GW-RW0374-19 |
20-Aug-19 |
19-Feb-20 |
DBJV |
WA23 @ Tsing Yi |
Construction Noise Permit |
GW-RW0181-20 |
29-Apr-20 |
14-Oct-20 |
DBJV |
Urmston Road in front of Pillar Point |
Construction Noise Permit |
GW-RW0144-20 |
14-Apr-20 |
31-Aug-20 |
DBJV |
WA23 Tsing Yi Storage Area |
Construction Noise Permit |
GW-RS1137-19 |
26-Dec-19 |
05-Jun-20 |
DBJV |
Southern Landfall |
Construction Noise Permit |
GW-RS0418-20 |
22-Jun-20 |
21-Dec-20 |
DBJV |
Southern Landfall |
Construction Noise Permit |
GW-RW0497-19 |
17-Oct-19 |
15-Apr-20 |
DBJV |
Northern Landfall |
A summary of the Environmental Mitigation and Enhancement Measure Implementation Schedules (EMIS) is presented in Appendix B. The necessary mitigation measures were implemented properly for this Contract.
Impact air quality monitoring, impact water quality and post-construction water quality monitoring, operational water quality monitoring, impact dolphin monitoring, operational dolphin monitoring and post-translocation coral monitoring were conducted for this Contract in accordance with the updated EM&A Manual.
One hundred and twenty two (122) Action Level and fifteen (15) Limit Level exceedances of 1-hour TSP, twelve (12) Action Level and four (4) Limit Level exceedances of 24-hour TSP were recorded for air quality monitoring during the impact monitoring period.
Fifty-eight (58) Action Level of Dissolved Oxygen (Surface and Middle), eighty-three (83) Action Level and eighteen (18) Limit Level exceedances of Dissolved Oxygen (Bottom), twenty-seven (27) Action Level and one (1) Limit Level exceedances of Suspended Solids (SS) were recorded for water quality monitoring during the impact monitoring period.
Eleven (11) Action Level and twenty (20) Limit Level exceedances were recorded for impact dolphin monitoring during the impact monitoring period.
Three (3) Limit Level exceedances were recorded for quarterly post-construction (operational) dolphin monitoring data between June 2020 and March 2021.
No exceedance of Action and Limit Levels was recorded for post-translocation coral monitoring.
Actions were taken in accordance with the Event Action Plan as presented in Appendix F.
The Environmental Complaint Handling Procedure is provided in Figure 2.4.
There was no prosecution recorded in the impact monitoring period. A notification of summons regarding the complaint case received on 17 November 2016 has been received in the monitoring period.
A total of 17 environmental complaints were received in the impact monitoring period. Investigations were conducted for the environmental complaints in accordance with the complaint handling process as stated in the Complaint Management Plan. Environmental complaints in the impact monitoring period are summarized in Table 2.21 below.
Table 2.21 Summary of Environmental Complaints
|
Complaint(s) |
Investigation/Follow up action(s) |
1 |
Compliant/ enquiry case regarding dust emission was notified by the Contractor on 25 April 2014. |
The investigation findings showed that the case was not related to the works under this Contract and was thus invalid. |
2 |
Environmental complaint case regarding to the noise generated by derrick light nearby Melody Garden was referred by EPD on 29 October 2014. |
The case was considered not related to the works under this Contract and was thus invalid. |
3 |
Two potential environmental complaint cases regarding to the dust emission by works area nearby the River Trade Terminal was referred by EPD on 12 November 2014. |
The cases were considered not related to the works under this Contract and were thus invalid. |
4 |
Environmental complaint case regarding dust emission from the barge area at Southern Landfall was referred by EPD on 20 May 2016. |
A joint site inspection was carried out with the Contractor, SOR and EPD on 23 May 2016 to verify the remedial measures. The complaint was handled in accordance with the Environmental Complaint Handling Procedure and the interim report was submitted to EPD on 24 May 2016. |
5 |
Environmental complaint case regarding muddy water discharge near the Pier at 33 Ho Yeung Street, Tuen Mun at Northern Landfall was referred by EPD on 28 June 2016. |
The complaint case was considered to be not related to this Contract’s work and was thus invalid. |
6 |
Complaint case regarding marine litter disposal was received on 16 July 2016. |
Upon investigation, the case was considered to be not related to this Contract. |
7 |
Environmental complaint case regarding whitish effluent discharge at the sea near cell 54-55 of the artificial island of HKBCF was referred by EPD on 22 September 2016. |
Starting from 29 September 2016, the Contractor had discontinued the practice of transportation of preliminarily treated and recycled water from the Northern Landfall to Southern Landfall in order to prevent reoccurrence of similar incident. No other additional action was required. |
8 |
Environmental complaint case regarding effluent discharge at the sea was referred by EPD on 28 November 2016. |
The Contractor has been reminded to adhere strictly to implement all relevant mitigation measures of water quality impact recommended or specified in the EP (EP-354/2009/D), the water discharge license, the approved EIA and the Updated EM&A Manual of this Project to avoid causing water pollution. A series of remedial actions were implemented by the Contractor, which are detailed in DBJV’s investigation report (refer to Twelfth Quarterly EM&A Report). |
9 |
Environmental complaint case regarding hammering Noise from unidentified Sources was referred by EPD on 14 December 2016. |
After investigation, the complaint case was considered to be not related to this Contract. |
10 |
Environmental complaint case regarding sewage discharge at the east of the artificial island of the Hong Kong – Zhuhai–Macao Bridge was referred by IEC on 16 January 2017. |
After investigation, the environmental complaint case was considered to be not related to this Contract. |
11 |
Environmental complaint case regarding trespassing of construction vessels in Brothers Marine Park was referred by IEC on 17 January 2017. |
After investigation, the environmental complaint case was considered to be not related to this Contract. |
12 |
Environmental complaint case regarding muddy water discharge at the site area near Ho Yeung Street was referred by EPD on 14 February 2017. |
Upon investigation, there were no adequate evidences to conclude that the complaint case was related to this Contract. |
13 |
Environmental complaint case regarding noise nuisance and water pollution at the site near HKBCF of HZMB was referred by IEC on 28 March 2017. |
Upon investigation, there were no adequate evidences to conclude that the complaint cases were related to this Contract. |
14 |
Environmental complaint case regarding light pollution at Tuen Mun Pier was referred by IEC on 25 October 2017. |
The Contractor has been reminded to implement mitigation measures of light impact to avoid causing visual impact. |
15 |
Environmental complaint case regarding air, noise and light pollution at River Trade Terminal was referred by IEC on 30 January 2018. |
Upon investigation, there were no adequate evidences to conclude that the complaint cases were related to this Contract. |
16 |
One environmental complaint concerning dust nuisance was received on 22 May 2019. |
Upon investigation, there were no adequate evidences to conclude that the complaint cases were related to this Contract. |
Statistics on complaints, notifications of summons, successful prosecutions are summarised in Annex H.
The construction phase EM&A programme for the Contract commenced on 1 November 2013 and was terminated since 19 March 2021.
This is the Final EM&A Report under the Contract No. HY/2012/08 presents a summary of the environmental monitoring and audit works from 1 November 2013 to 19 March 2021, in accordance with the Updated EM&A Manual and the requirements of the Environmental Permits.
The review of monitoring data suggested that the construction works under this Contract have proceeded in an environmentally acceptable manner in the impact monitoring period. In general, the monitoring results were in line with EIA predictions.
The EM&A programme was considered as adequate and effective in monitoring impacts arising from the Contract.