Contract No. HY/2013/01
Hong Kong-Zhuhai-Macao Bridge
Hong Kong Boundary Crossing Facilities ¡V Passenger Clearance Building
Quarterly EM&A Report No. 10
(Covering the Period from 1 January 2017 to 31 March 2017)
18 May 2017
Revision 1
Main
Contractor
Environmental Team
|
Contents
Executive Summary
1.4 Construction Works Undertaken During the Reporting Period
2.1 Summary of EM&A Requirements
3....... Environmental Monitoring and Audit 12
3.1 Air Quality Monitoring Results. 12
3.3 Water Quality Monitoring Results
3.4 Dolphins Monitoring Results
3.5 Implementation of Environmental Measures
3.6 Advice on the Solid and Liquid Waste Management Status
3.7 Environmental Licenses and Permits
4....... Summary of Exceedance, Complaint, Notification of Summons and Successful Prosecution
4.1 Summary of Exceedance of the Environmental Quality Performance Limit
4.2 Summary of Complaints, Notification of Summons and Successful Prosecution
5....... Comments, Recommendations and Conclusion
Figures
Figure 2.1 Location of Air Quality Monitoring Stations
Figure 2.2 Location of Noise Monitoring Stations
Figure 2.3 Location of Water Quality Monitoring Stations
Figure 2.4 Impact Dolphins Monitoring Line Transect Layout Map
Appendices
Appendix A Location of Works Areas
Appendix B Project Organization for Environmental Works
Appendix C Construction Programme
Appendix D Event and Action Plan
Appendix E Implementation Schedule for Environmental Mitigation Measures (EMIS)
Appendix F Site Audit Findings and Corrective Actions
Appendix G Waste Flow Table
Appendix H Environmental Licenses and Permits
Appendix I Statistics on Environmental Complaints, Notification of Summons and Successful Prosecutions
Executive Summary
This Quarterly Environmental Monitoring and Audit (EM&A) Report is prepared for Contract HY/2013/01 Hong Kong-Zhuhai-Macao Bridge Hong Kong Boundary Crossing Facilities (HKBCF) ¡V Passenger Clearance Building (hereafter referred to as ¡§the Contract¡¨) for the Highways Department of Hong Kong Special Administrative Region (HKSAR). The Contract was awarded to Leighton ¡V Chun Wo Joint Venture (hereafter referred to as ¡§the Contractor¡¨) and Atkins China Limited was appointed as the Environmental Team (ET) by the Contractor.
The Contract is part of Hong Kong ¡V Zhuhai ¡V Macao Bridge HKBCF which is a ¡§Designated Project¡¨, under Schedule 2 of the Environmental Impact Assessment Ordinance (EIAO) (Cap 499) and Environmental Impact Assessment (EIA) Report (Register No. AEIAR-145/2009) was prepared for the Project. The current Environmental Permit (EP) No. EP-353/2009/K for HKBCF was issued on 11 April 2016. These documents are available through the EIA Ordinance Register. Site preparation works of the Contract started on 26 September 2014 and the construction works of the Contract commenced on 6 October 2014.
Atkins China Limited has been appointed by the Contractor to implement the Environmental Monitoring & Audit (EM&A) programme for the Contract in accordance with the Updated EM&A Manual for HKBCF (Version1.0) and will be providing environmental team services to the Contract.
This is the tenth Quarterly EM&A Report for the Contract which summaries findings of the EM&A works during the reporting period from 1 January to 31 March 2017.
Environmental Monitoring and Audit Progress
The EM&A programme was undertaken in accordance with the Updated EM&A Manual for HKBCF (Version 1.0). It should be noted that the air quality, noise, water quality and dolphin monitoring works for the Contract are covered by Contract No. HY/2010/02 Hong Kong-Zhuhai-Macao Bridge HKBCF ¡V Reclamation Works and Contract No. HY/2011/03 Hong Kong-Zhuhai-Macao Bridge Hong Kong Link Road ¡V Section between Scenic Hill and HKBCF. The ET of the Contract or another ET of the HZMB project is required to conduct impact air quality monitoring at AMS6, AMS7, noise monitoring at NMS2 and NMS3B, water quality monitoring at twenty-one stations (nine Impact Stations, seven Sensitive Receiver Stations and five Control/Far Field Stations) and dolphin monitoring works at twenty-three transects as part of EM&A programme if these monitoring stations/ transects are no longer covered under Contract Nos. HY/2010/02 and HY/2011/03. However, this is subject to ENPO¡¦s final decision on which ET should carry out the monitoring work at these stations/transects.
The dates of environmental site inspection during the reporting period are listed below:
|
Environmental Site Inspection Date |
||
|
January 2017 |
February 2017 |
March 2017 |
|
4, 11, 18 and 25 |
1, 8, 15 and 22 |
1, 8, 15, 22 and 29 |
Breaches of Action and Limit Levels
Summary of Action and Limit Level exceedance of 1-hr TSP level and 24-hr TSP level at station AMS6 shall be referred to the monthly EM&A Reports (for January, February and March 2017) prepared by Contract No. HY/2011/03.
There was no Action and Limit Level exceedance of 1-hr TSP level and 24-hr TSP level recorded at AMS7 by the Environmental Team of Contract No. HY/2010/02 during the reporting period.
There was no Action and Limit Level exceedance for noise recorded at NMS2 and NMS3B by the Environmental Team of Contract No. HY/2010/02 during the reporting period.
There were two Action Level exceedances of turbidity, six Action Level exceedances and one Limit Level exceedance of suspended solids (SS) were recorded by the ET of Contract No. HY/2010/02 during the reporting period (for January, February and March 2017). After investigation, these exceedances were considered not likely to be caused by this Contract¡¦s activities. No follow-up action is required.
Impact dolphin monitoring results at all transects are reported in the EM&A Report prepared for Contract No. HY/2010/02.
Implementation of Environmental Measures
Site inspections were carried out on a weekly basis to monitor the implementation of proper environmental pollution control and mitigation measures for the Project. Potential environmental impacts due to the construction activities were monitored and reviewed.
Complaint Log
There was one complaint received in relation to the environmental impact during the reporting period.
A summary of environmental complaints for this reporting period is as follows:
|
Environmental Complaint No. |
Date of Complaint Received |
Description of Environmental Complaints |
|
006 |
28 March 2017 |
Noise and Water Quality |
Notifications of Summons and Successful Prosecutions
There was no notification of summon or prosecution received during this reporting period.
Reporting Change
There was no reporting change during the reporting period.
1 Introduction
1.1.1 This Quarterly Environmental Monitoring and Audit (EM&A) Report is prepared for Contract HY/2013/01 Hong Kong-Zhuhai-Macao Bridge Hong Kong Boundary Crossing Facilities ¡V Passenger Clearance Building (hereafter referred to as ¡§the Contract¡¨) for the Highways Department of Hong Kong Special Administrative Region. The Contract was awarded to Leighton ¡V Chun Wo Joint Venture (hereafter referred to as ¡§the Contractor¡¨) and Atkins China Limited was appointed as the Environmental Team (ET) by the Contractor.
1.1.2 The Contract is part of Hong Kong ¡V Zhuhai ¡V Macao Bridge Hong Kong Boundary Crossing Facilities (HKBCF) which is a ¡§Designated Project¡¨, under Schedule 2 of the Environmental Impact Assessment Ordinance (EIAO) (Cap 499). An Environmental Impact Assessment (EIA) Report (Register No. AEIAR-145/2009) was prepared for the Project. The current Environmental Permit (EP) No. EP-353/2009/K for HKBCF was issued on 11 April 2016. These documents are available through the EIA Ordinance Register. Site preparation work of the Contract started on 26 September 2014 and the construction works of the Contract commenced on 6 October 2014. The works areas of the Contract are shown in Appendix A.
1.1.3 This is the tenth Quarterly EM&A Report for the Contract which summarizes the audit findings of the EM&A programme during the reporting period from 1 January to 31 March 2017.
1.2.1 The project organization structure and lines of communication with respect to the on-site environmental management structure is shown in Appendix B. The key personnel contact names and numbers are summarized in Table 1.1.
Table 1.1 Contact Information of Key Personnel
|
Party |
Position |
Name |
Telephone |
Fax |
|
Engineer
or Engineer¡¦s Representative |
Chief Resident Engineer |
Darrel Kingan |
3958 7339 |
3468 2076 |
|
Michael Tovey(1) |
||||
|
Environmental
Project Office / Independent Environmental Checker |
Environmental Project Office Leader |
Y. H. Hui |
3465 2888 |
3465 2899 |
|
Independent Environmental Checker |
Raymond Dai |
3465 2888 |
3465 2899 |
|
|
Contractor
|
Project Manager |
Owen Leung |
9232 5750 |
3621 0180 |
|
Environmental Officer |
Michael Lee |
6461 8635 |
3621 0180 |
|
|
Environmental
Team |
Environmental Team Leader |
Keith Chau |
2972 1721 |
2890 6343 |
|
24 hours complaint hotline |
--- |
--- |
3958 7300 |
--- |
(1) Mr Michael Tovey took up the role of the Chief Resident Engineer from Mr Darrel Kingan effective from 1 March 2017.
1.3 Construction Programme
1.3.1 A copy of the Contractor¡¦s construction programme is provided in Appendix C.
1.4.1 A summary of the construction activities undertaken during this reporting period is shown below:
Land-Based Work
¡P Bulk Excavation at Seawater pump house and Box Culvert (WA1);
¡P Pile Cropping (WA1);
¡P Pile Capping (WA1);
¡P Waterproofing (WA1);
¡P Tower Crane Lowering (WA1);
¡P Suspended Slab Construction (WA1);
¡P Backfilling (WA1);
¡P RC works (Seawater Pump House, Southern Drop Off Deck) (WA1);
¡P Formwork and falsework stripping (WA1);
¡P Column and Wall Construction (Seawater pump house, generator set building) (WA1);
¡P District Cooling System Pipework installation (WA1);
¡P Blockwork walls (WA1);
¡P Pipework and ductwork installation (WA1);
¡P Footings for roof erection/ Footing demolition works (WA1);
¡P Hanger rods for cable container (WA1);
¡P Wet trade works (WA1);
¡P Dry trade works (WA1);
¡P Launch Rail Installation (WA1);
¡P Facade Bracket for Cabins (WA1);
¡P Steel Roof Segment Travelling works (WA1);
¡P Mechanical, Electrical and Plumbing High Level Containment (WA1);
¡P Steel Roof Erection works (WA1);
¡P Trolley removal works (WA1);
¡P Baring Point loading/ unloading works (WA1);
¡P Plinth construction (WA1);
¡P Removal of Temporary Works (WA1);
¡P Window wall (WA1);
¡P Sothern Drop off Deck Construction (WA1);
¡P 11 KV electric cable installation by China Light Power (CLP) (WA1);
¡P Heat exchanger installation (WA1);
¡P District Cooling System chilled water pipe installation (WA1);
¡P Heavy Mechanical, Electrical and Plumbing plant set up in basement (WA1);
¡P Box Culvert RC works (WA1);
¡P Double Bow Truss installation (WA1); and
¡P Mullion Frame installation (WA1).
Marine-based work
¡P Delivery of Steel Roof Segment by Marine Transportation (WA1);
¡P District Cooling System (DCS) intake RC works (WA1);
¡P District Cooling System (DCS) outfall construction works (WA1);
¡P Box Culvert Outfall construction work (WA1); and
¡P Bulk Excavation (DCS outfall) (WA1).
2 EM&A Requirement
2.1 Summary of EM&A Requirements
2.1.1 The EM&A programme was undertaken in accordance with the Updated EM&A Manual for HKBCF (Version 1). It should be noted that the air quality and noise monitoring works for the Contract are covered by Contract No. HY/2010/02 Hong Kong-Zhuhai-Macao Bridge HKBCF ¡V Reclamation Works and Contract No. HY/2011/03 Hong Kong-Zhuhai-Macao Bridge Hong Kong Link Road ¡V Section between Scenic Hill and HKBCF. The ET of the Contract or another ET of the HZMB project is required to conduct impact air quality monitoring at AMS6 and AMS7 and noise monitoring at NMS2 and NMS3B as part of EM&A programme if these monitoring stations are no longer covered under Contract Nos. HY/2010/02 and HY/2011/03. However, this is subject to ENPO¡¦s final decision on which ET should carry out the monitoring work at these stations.
2.1.2 The permission to carry out impact air quality monitoring work at AMS7 (Hong Kong SkyCity Marriott Hotel) was not granted after 31 January 2015. The impact air quality monitoring location (AMS7) was relocated to a nearby air sensitive receiver, Chu Kong Air-Sea Union Transportation Co. Ltd. (AMS7A), from 5 February 2015 to 30 December 2015. The alternative location at Chu Kong Air-Sea Union Transportation Co. Ltd. was approved by EPD on 5 February 2015. However, AMS7A was relocated back to its original location (AMS7-Hong Kong SkyCity Marriott Hotel) on 30 December 2015. The relocation of air quality monitoring location, AMS7A, back to AMS7 was approved by EPD on 21 December 2015. The baseline and action/limit level for air quality as derived from the baseline monitoring data recorded at Hong Kong SkyCity Marriott Hotel (AMS7) was adopted for the air quality monitoring location.
2.1.3 A summary of air and noise monitoring locations are presented in Table 2.1. The location of air quality and noise monitoring stations are shown as in Figure 2.1 and Figure 2.2, respectively.
Table 2.1 Summary of Impact EM&A Requirements
|
Environmental Monitoring |
ID |
Location Description |
|
Air Quality |
AMS6(1) |
Dragonair/CNAC (Group) Building |
|
AMS7(1), (2) |
Hong Kong SkyCity Marriott Hotel |
|
|
Noise |
NMS2(3) |
Seaview Crescent |
|
NMS3B(3),(4) |
Site Boundary of Site Office Area at Works Area WA2 |
Remarks:
(1) The ET of this Contract should conduct impact air quality monitoring at the Air Monitoring Station listed in the table as part of EM&A programme according to the latest notification from ENPO when the monitoring station(s) is/are no longer covered by another ET of the HZMB project.
(2) The original monitoring location was at Hong Kong SkyCity Marriott Hotel (AMS7). As the permission to carry out air quality monitoring at Hong Kong SkyCity Marriott Hotel was not granted after 31 January 2015, the monitoring location was relocated to Chu Kong Air-Sea Union Transportation Co. Ltd. (AMS7A) from 5 February 2015 to 30 December 2015. The alternative monitoring location at Chu Kong Air-Sea Union Transportation Co. Ltd. was approved by EPD on 5 February 2015. However, AMS7A was relocated back to its original location (AMS7-Hong Kong SkyCity Marriott Hotel) on 30 December 2015. The relocation of air quality monitoring location, AMS7A, back to AMS7 was approved by EPD on 21 December 2015.
(3) The ET of this Contract should conduct impact noise monitoring at the NMS listed in the table as part of EM&A programme according to the latest notification from ENPO when the monitoring station(s) is/are no longer covered by another ET of the HZMB project.
(4) The Action and Limit Levels for schools will be applied for this alternative monitoring location.
2.1.4 The water quality monitoring works for the Contract are covered by Contract No. HY/2010/02 Hong Kong-Zhuhai-Macao Bridge HKBCF ¡V Reclamation Works. A total of twenty-one stations (nine Impact Stations, seven Sensitive Receiver Stations and five Control/Far Field Stations) are covered by the current EM&A programme. The ET of the Contract or another ET of the HZMB project is required to conduct water quality at these stations as part of EM&A programme if these monitoring stations are no longer covered under Contract No. HY/2010/02. However, this is subject to ENPO¡¦s final decision on which ET should carry out the monitoring work at these stations.
2.1.5 Table 2.2.and Figure 2.3 show the locations of water quality monitoring stations.
Table 2.2 Impact Water Quality Monitoring Stations
|
Station |
Description |
East |
North |
|
IS5 |
Impact Station (Close to HKBCF construction site) |
811579 |
817106 |
|
IS(Mf)6 |
Impact Station (Close to HKBCF construction site) |
812101 |
817873 |
|
IS7 |
Impact Station (Close to HKBCF construction site) |
812244 |
818777 |
|
IS8 |
Impact Station (Close to HKBCF construction site) |
814251 |
818412 |
|
IS(Mf)9 |
Impact Station (Close to HKBCF construction site) |
813273 |
818850 |
|
IS10 |
Impact Station (Close to HKBCF construction site) |
812577 |
820670 |
|
Impact Station (Close to HKBCF construction site) |
813562 |
820716 |
|
|
Impact Station (Close to HKBCF construction site) |
814328 |
819497 |
|
|
IS17 |
Impact Station (Close to HKBCF construction site) |
814539 |
820391 |
|
SR3 |
Sensitive receivers (San Tau SSSI) |
810525 |
816456 |
|
SR4(N) |
Sensitive receivers (Tai Ho) |
814705 |
817859 |
|
SR5 |
Sensitive receivers (Artificial Reef in NE Airport) |
811489 |
820455 |
|
SR6 |
Sensitive receivers (Sha Chau and Lung Kwu Chau Marine Park) |
805837 |
821818 |
|
SR7 |
Sensitive receivers (Tai Mo Do) |
814293 |
821431 |
|
SR10A |
Sensitive receivers (Ma Wan FCZ) 1 |
823741 |
823495 |
|
SR10B(N) |
Sensitive receivers (Ma Wan FCZ) 2 |
823683 |
823187 |
|
CS(Mf)3 |
Control Station |
809989 |
821117 |
|
CS(Mf)5 |
Control Station |
817990 |
821129 |
|
CS4 |
Control Station |
810025 |
824004 |
|
CS6 |
Control Station |
817028 |
823992 |
|
CSA |
Control Station |
818103 |
823064 |
2.1.6 The dolphin monitoring works for the Contract are covered by Contract No. HY/2010/02 Hong Kong-Zhuhai-Macao Bridge HKBCF ¡V Reclamation Works. The ET of the Contract or another ET of the HZMB project is required to conduct dolphin monitoring at the twenty-three transects as part of EM&A programme if these transects are no longer covered under Contract No. HY/2010/02. The dolphin monitoring should adopt line-transect vessel survey method. The survey follows pre-set and fixed transect lines in the two areas defined by AFCD as: Northeast Lantau survey area; and Northwest Lantau survey area. The co-ordinates for the transect lines and a layout map showing the transect lines have been provided by AFCD and are shown in Table 2.3. The co-ordinates for the transect lines and layout map are shown in Figure 2.4.
Table 2.3 Impact Dolphin Monitoring Line Transect Co-ordinates (Provided by AFCD)
|
Transect ID |
HK Grid System |
Long Lat in WGS84 |
||
|
X |
Y |
Long |
Lat |
|
|
1# |
804671 |
815456 |
113.870287 |
22.277678 |
|
804671 |
831404 |
113.869975 |
22.421696 |
|
|
2# |
805475 |
815913 |
113.878079 |
22.281820 |
|
805477 |
826654 |
113.877896 |
22.378814 |
|
|
3 |
806464 |
819435 |
113.887615 |
22.313643 |
|
806464 |
822911 |
113.887550 |
22.345030 |
|
|
4 |
807518 |
819771 |
113.897833 |
22.316697 |
|
807518 |
829230 |
113.897663 |
22.402113 |
|
|
5 |
808504 |
820220 |
113.907397 |
22.320761 |
|
808504 |
828602 |
113.907252 |
22.396462 |
|
|
6 |
809490 |
820466 |
113.916965 |
22.323003 |
|
809490 |
825352 |
113.916884 |
22.367128 |
|
|
7# |
810499 |
820880 |
113.926749 |
22.326757 |
|
810499 |
824613 |
113.926688 |
22.360464 |
|
|
8# |
811508 |
821123 |
113.936539 |
22.328966 |
|
811508 |
824254 |
113.936486 |
22.357241 |
|
|
9# |
812516 |
821303 |
113.946320 |
22.330606 |
|
812516 |
824254 |
113.946279 |
22.357255 |
|
|
10* |
813525 |
820827 |
113.956112 |
22.326321 |
|
813525 |
824657 |
113.956066 |
22.360908 |
|
|
11# |
814556 |
818853 |
113.966155 |
22.304858 |
|
814556 |
820992 |
113.966125 |
22.327820 |
|
|
12 |
815542 |
818807 |
113.975726 |
22.308109 |
|
815542 |
824882 |
113.975647 |
22.362962 |
|
|
13 |
816506 |
819480 |
113.985072 |
22.314192 |
|
816506 |
824859 |
113.985005 |
22.362771 |
|
|
14 |
817537 |
820220 |
113.995070 |
22.320883 |
|
817537 |
824613 |
113.995018 |
22.360556 |
|
|
15 |
818568 |
820735 |
114.005071 |
22.325550 |
|
818568 |
824433 |
114.005030 |
22.358947 |
|
|
16 |
819532 |
821420 |
114.014420 |
22.331747 |
|
819532 |
824209 |
114.014390 |
22.356933 |
|
|
17 |
820451 |
822125 |
114.023333 |
22.338117 |
|
820451 |
823671 |
114.023317 |
22.352084 |
|
|
18 |
821504 |
822371 |
114.033556 |
22.340353 |
|
821504 |
823761 |
114.033544 |
22.352903 |
|
|
19 |
822513 |
823268 |
114.043340 |
22.348458 |
|
822513 |
824321 |
114.043331 |
22.357971 |
|
|
20 |
823477 |
823402 |
114.052695 |
22.349680 |
|
823477 |
824613 |
114.052686 |
22.360610 |
|
|
21 |
805476 |
827081 |
113.877878 |
22.382668 |
|
805476 |
830562 |
113.877811 |
22.414103 |
|
|
22 |
806464 |
824033 |
113.887520 |
22.355164 |
|
806464 |
829598 |
113.887416 |
22.405423 |
|
|
23 |
814559 |
821739 |
113.966142 |
22.334574 |
|
814559 |
824768 |
113.966101 |
22.361920 |
|
|
Remarks: (a) *Due to the presence of deployed silt curtain systems at the site boundaries of the Contract, some of the transect lines shown in Figure 2.4 could not be fully surveyed during the regular survey. Transect 10 is reduced from 6.4km to approximately 3.6km in length due to the HKBCF construction site. Therefore the total transect length for both NEL and NWL combined is reduced to approximately 108km. (b) #Coordinates for transect lines 1, 2, 7, 8, 9 and 11 have been updated in respect to the Proposal for Alteration of Transect Line for Dolphin Monitoring approved by EPD on 19 August 2015. |
||||
2.2.1 The monitoring requirements, monitoring equipment, monitoring parameters, frequency and duration, monitoring methodology, monitoring schedule, meteorological information are detailed in the monthly EM&A Reports prepared for Contract Nos. HY/2010/02 and HY/2011/03.
2.3.1 The Action and Limit Level for 1-hr TSP and 24-hr TSP are provided in Table 2.4 and Table 2.5, respectively.
Table 2.4 Action and Limit Levels for 1-hour TSP
|
Monitoring Station |
Action Level, µg/m3 |
Limit Level, µg/m3 |
|
AMS6 ¡V Dragonair/CNAC (Group) Building (HKIA) |
360 |
500 |
|
AMS7 ¡V Hong Kong SkyCity Marriott Hotel |
370 |
Table 2.5 Action and Limit Levels for 24-hour TSP
|
Monitoring Station |
Action Level, µg/m3 |
Limit Level, µg/m3 |
|
AMS6 ¡V Dragonair/CNAC (Group) Building (HKIA) |
173 |
260 |
|
AMS7 ¡V Hong Kong SkyCity Marriott Hotel |
183 |
2.3.2 If exceedance(s) at these station(s) is/are recorded by the ET of the Contract or referred by the other ET under the HZMB project to the Contract, the ET of the Contract will carry out an investigation and findings will be reported in the quarterly EM&A Report.
2.3.3 The Action and Limit Levels for construction noise are defined in Table 2.6.
Table 2.6 Action and Limit Level for Construction Noise
|
Parameter |
Action Level |
Limit Level |
|
07:00 ¡V 19:00 hours on normal weekdays |
When one documented complaint is received |
75 dB(A)* |
Notes :
If works are to be carried out during restricted hours, the conditions stipulated in the construction noise permit issued by the Noise Control Authority have to be followed.
* Reduce to 70 dB(A) for schools and 65 dB(A) during school examination period.
2.3.4 If exceedance(s) at these station(s) is/are recorded by the ET of the Contract or referred by the other ET under the HZMB project to the Contract, the ET of the Contract will carry out an investigation and findings will be reported in the quarterly EM&A Report.
2.3.5 The Action and Limit Levels for water quality are provided in Table 2.7.
Table 2.7 Action and Limit Levels for Water Quality
|
Parameters |
Action |
Limit |
|
DO in mg L-1 (Surface, Middle & Bottom) |
Surface and Middle |
|
|
SS in mg L-1 (depth-averaged) at all monitoring stations and control stations |
23.5 and 120% of upstream control station's SS at the same tide of the same day* |
34.4 and 130% of upstream control station's SS at the same tide of the same day and 10mg/L for WSD Seawater intakes* |
|
27.5 and 120% of upstream control station's turbidity at the same tide of the same day* |
47.0 and 130% of upstream control station's turbidity at the same tide of the same day* |
*
Remarks: Reference is made to EPD approval of adjustment of water quality
assessment criteria issued and became
effective on
18 February 2013.
Notes: 1. ¡§depth-averaged¡¨ is calculated by taking the
arithmetic means of reading of all three depths.
2.For DO, non-compliance of the water quality limits occurs when monitoring result is lower than the limits.
3.For turbidity, SS, non-compliance of the water quality limits occurs when monitoring result is higher than the limits.
4.All the figures given in the table are used for reference only and the EPD may amend the figures whenever it is considered as necessary.
5.The 1%-ile of baseline data for dissolved oxygen (surface and middle) and dissolved oxygen (bottom) are 4.2 mg/L and 3.6 mg/L respectively.
2.3.6 If exceedance(s) at these station(s) is/are recorded by the ET of the Contract or referred by the other ET under the HZMB project to the Contract, the ET of the Contract will carry out an investigation and findings will be reported in the monthly EM&A Report.
2.3.7 The Action and Limit Levels for Chinese White Dolphin Monitoring are provided in Table 2.8 and Table 2.9, respectively.
Table 2.8 Action and Limit Levels for Chinese White Dolphin Monitoring - Approach to Define Action Level (AL) and Limit Level (LL)
|
|
North Lantau Social Cluster |
|
|
|
NEL |
NWL |
|
Action Level |
(STG < 70% of baseline) & (ANI < 70% of baseline) |
(STG < 70% of baseline) & (ANI < 70% of baseline) |
|
Limit Level |
[(STG < 40% of baseline) & (ANI < 40% of baseline)] AND [ (STG < 40% of baseline) & (ANI < 40% of baseline)] |
|
Table 2.9 Derived Value of Action Level (AL) and Limit Level (LL) for Chinese White Dolphin Monitoring
|
|
North Lantau Social Cluster |
|
|
|
NEL |
NWL |
|
Action Level |
(STG < 4.2) & (ANI < 15.5 ) |
(STG < 6.9) & (ANI < 31.3) |
|
Limit Level |
[(STG < 2.4) & (ANI <8.9)] AND [ (STG < 3.9)& (ANI < 17.9)] |
|
2.3.8 If exceedance(s) at these survey transect(s) is/are recorded by the ET of the Contract or referred by the other ET under the HZMB project to the Contract, the ET of the Contract will carry out an investigation and findings will be reported in the monthly EM&A Report.
2.4.1 The Event Actions Plans for air quality, noise, water quality and dolphin monitoring are provided in Appendix D.
2.5.1 Environmental mitigation measures for the Contract were recommended in the approved EIA Report. Appendix E lists the recommended mitigation measures and the implementation status.
3 Environmental Monitoring and Audit
3.1.1 The monitoring results for AMS6 and AMS7 are reported in the monthly EM&A Reports (for January, February and March 2017) prepared for Contract Nos. HY/2011/03 and HY/2010/02, respectively.
3.1.2 Summary of Action and Limit Level exceedance of 1-hr TSP level and 24-hr TSP level at AMS6 shall be referred to the monthly EM&A Reports (for January, February and March 2017) prepared by Contract No. HY/2011/03.
3.1.3 There was no Action and Limit Level exceedance of 1-hr TSP level and 24-hr TSP level recorded at AMS7 recorded by the ET of Contract No. HY/2010/02 during the reporting period.
3.2.1 The monitoring results for NMS2 and NMS3B are reported in the monthly EM&A Reports (for January, February and March 2017) prepared for Contract No. HY/2010/02.
3.2.2 No noise exceedances were recorded at stations NMS2 and NMS3B by the ET of Contract No. HY/2010/02 during the reporting period.
3.3 Water Quality Monitoring Results
3.3.1 The monitoring results for these stations are reported in the monthly EM&A Reports (for January, February and March 2017) prepared for Contract No. HY/2010/02.
3.3.2 Two Action Level exceedances of turbidity, six Action Level exceedances of suspended solids and one Limit Level exceedance of suspended solids were recorded at IS8, SR4(N), SR6 and SR7 by the Environmental Team of Contract No. HY/2010/02 during reporting period (for January, February and March 2017). The detail of the exceedances are provided in Table 3.1.
Table 3.1 Action and Limit Levels exceedance for Water Quality
|
Monitoring Station |
Monitoring Time |
Measured depth averaged (in mg/L) |
Level Exceeded |
Monitoring Date |
|
Mid-Flood tide (Turbidity) (in NTU) |
||||
|
SR4(N) |
15:30 |
33.6 |
Action |
24 March 2017 |
|
IS8 |
15:37 |
34.9 |
Action |
24 March 2017 |
|
Mid-Flood tide (Suspended Solids) (in mg/L) |
||||
|
IS8 |
13:32 |
26.5 |
Action |
6 February 2017 |
|
SR7 |
09:35 |
23.6 |
Action |
15 February 2017 |
|
SR4(N) |
15:30 |
29.5 |
Action |
24 March 2017 |
|
IS8 |
15:37 |
47.0 |
Limit |
24 March 2017 |
|
Mid-Ebb tide (Suspended Solids) (in mg/L) |
||||
|
SR6 |
11:29 |
23.8 |
Action |
10 February 2017 |
|
SR4(N) |
11:32 |
26.6 |
Action |
24 March 2017 |
|
IS8 |
11:26 |
29.3 |
Action |
24 March 2017 |
3.3.3 Exceedances were not due to operation of the works under Contract No. HY/2013/01. Because no marine transportation were undertaken by the Contract during the relevant water quality monitoring period. The marine-based work at district cooling system seawater intake and box culvert within silt curtain area were conducted on relevant water quality monitoring period. It was noted that no exceedance was recorded on relevant water quality monitoring period at WQM Station IS10 which is located nearest to the district cooling system seawater intake. Moreover, the location of district cooling system seawater intake and box culvert outfall are far away from the concerned WQM Stations SR4(N) and IS8 (about 2km). No site runoff within the Contract site has been observed. Therefore, the exceedances were not related to Contract No. HY/2013/01. The details of water quality exceedances can be made reference to the monthly EM&A report under Contract No. HY/2010/02.
3.4 Dolphins Monitoring Results
3.4.1 The monitoring results for dolphin monitoring are reported in the monthly EM&A Reports prepared for Contract No. HY/2010/02.
3.5.1 In response to the site audit findings, the Contractor carried out corrective actions. Details of site audit findings and the corrective actions during the reporting period are presented in Appendix F.
3.5.2 The Contractor waters 8 times per day on all exposed soil within the Contract site and associated works areas when construction activities are being undertaken.
3.5.3 The marine traffic records and geographical plots of all the vessels tracks for the reporting month will be submitted by the Contractor to Engineer¡¦s Representative (ER), Environmental Team Leader (ETL) and Independent Environmental Checker / Environmental Project Office (IEC/ENPO) within 3 weeks after the reporting month. The marine traffic records and geographical plots for January 2017 were submitted by the Contractor to ER, ETL and IEC/ENPO on 25 January, 22 February and 6 March 2017 respectively. For February and March 2017, they were submitted by Contractor to ER, ETL and IEC/ENPO on 22 March and 19 April 2017, respectively. It was noted that the marine traffic records and geographical plots in January and February 2017 were submitted out of the allowed submission time frame (i.e. within 3 weeks after the reporting month). The Contractor has been reminded to submit these information to all relevant parties on time.
3.5.4 Regular marine travel route for marine vessels were implemented properly and training was provided for barge operators in accordance with the Regular Marine Travel Routes Plan and relevant records were kept properly.
3.5.5 A summary of the Implementation Schedule of Environmental Mitigation Measures (EMIS) is presented in Appendix E. Most of the necessary mitigation measures were implemented properly.
3.6.1 The Contractor registered as a chemical waste producer for the Contract. Sufficient numbers of receptacles were available for general refuse collection and sorting.
3.6.2 No marine sediment was generated/treated and no treated marine sediment was reused in the reporting period. As informed by the Contractor in March 2016, the transfer of treated marine sediment to Contract no. HY/2010/02 has been discontinued since July 2015.
3.6.3 The summary of waste flow table is detailed in Appendix G.
3.6.4 The Contractor was reminded that chemical waste containers should be properly treated and stored 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.
3.7.1 The valid environmental licenses and permits during the reporting period are summarized in Appendix H.
4 Summary of Exceedance, Complaint, Notification of Summons and Successful Prosecution
4.1.1 Summary of Action and Limit Level exceedance of 1-hr TSP level and 24-hr TSP level at AMS6 shall be referred to the monthly EM&A Reports (for January, February and March 2017) prepared by Contract No. HY/2011/03.
4.1.2 There was no Action and Limit Level exceedance of 1-hr TSP level and 24-hr TSP level recorded at AMS7 by the Environmental Team of Contract No. HY/2010/02 during the reporting period.
4.1.3 There was no Action and Limit Level exceedance for noise recorded at NMS2 and NMS3B by the Environmental Team of Contract No. HY/2010/02 during the reporting period.
4.1.4 There were two Action Level exceedances of turbidity, six Action Level exceedances and one Limit Level exceedance of suspended solids were recorded by the ET of Contract No. HY/2010/02 during the reporting period (for January, February and March 2017). Action Level Exceedance of SS at IS8 at Mid-Flood tide on 6 February 2017. Action Level Exceedance of SS at SR6 at Mid-Ebb tide on 10 February 2017. Action Level Exceedance of SS at SR7 at Mid-Flood tide on 15 February 2017. Action Level Exceedance of turbidity at SR4(N) and IS8 at Mid-Flood tide on 24 March 2017. Action Level Exceedance of SS at SR4(N) and Limit Level Exceedance of SS at IS8 at Mid-Flood tide on 24 March 2017. Action Level Exceedance of SS at SR4(N) and IS8 at Mid-Ebb tide on 24 March 2017. The details of water quality exceedances can be made reference to the monthly EM&A report under Contract No. HY/2010/02. After investigation, these exceedances were considered not likely to be caused by this Contract¡¦s activities. No follow-up action is required.
4.1.5 Impact dolphin monitoring results at all transects are reported in the EM&A Reports prepared for Contract No. HY/2010/02.
4.2 Summary of Complaints, Notification of Summons and Successful Prosecution
4.2.1 There was one complaint received in relation to the environmental impact during the reporting period. A summary of environmental complaint is presented in Table 4.1. The details of cumulative statistics of Environmental Complaints are provided in Appendix I.
Table 4.1 A Summary of Environmental Complaints for the Reporting Month
|
Environmental Complaint No. |
Date of Complaint Received |
Description of Environmental Complaints |
|
006 |
28 March 2017 |
Noise and Water Quality |
4.2.1 According to ENPO¡¦s email to the Environmental Team, Engineer¡¦s Representative and Contractor on 28 March 2017, it is noted that EPD received a complaint regarding a noise and water quality complaint from a resident of Century Link. The complainant said that loud sound was generated from HZMB site area from 10pm until midnight on 26 March 2017. Also, muddy water was observed in the morning on 27 March 2017. The complainant suspected that the noise and water quality nuisance were generated from HZMB project.
4.2.2 According to the information provided by the Contractor, there was no construction work being done between 10pm 26 March 2017 to 7am 27 March 2017. There was no marine transportation in the morning on 27 March 2017. The marine-based work at Box Culvert Outfall within silt curtain area was conducted in the morning on 27 March 2017. No site runoff within the Contract site has been observed. Based on the investigation results, it is found that the noise and water quality nuisance is not related to Contract No. HY/2013/01. No follow up action is required.
4.2.3 No notification of summons and prosecution was received during the reporting period.
4.2.4 Statistics on notifications of summons and successful prosecutions are summarized in Appendix I.
5.1.1 According to the environmental site inspections undertaken during the reporting period, the following recommendations were provided:
¡P The Contractor was reminded to provide drip trays for the chemical containers and diesel drum.
¡P The Contractor was reminded to clear or pump the stagnant water.
¡P The Contractor was reminded to provide the cover for the cement bags.
¡P The Contractor was reminded to remove the general refuses as soon as possible and sort from the construction waste.
¡P The Contractor was reminded to cover the sand stockpiles entirely by impervious sheeting or spray with water to avoid dust generation.
¡P The Contractor was reminded to treat the contaminated soil as chemical waste.
¡P The Contractor was reminded to provide display NRMM label for the generator.
5.1.2 A summary of the Implementation Schedule of Environmental Mitigation Measures (EMIS) is presented in Appendix E. Most of the necessary mitigation measures were implemented properly.
5.2.1 With implementation of the recommended environmental mitigation measures, the contract¡¦s environmental impacts were considered environmentally acceptable. The weekly environmental site inspections ensured that all the environmental mitigation measures recommended were effectively implemented.
5.2.2 The recommended environmental mitigation measures, as included in the EM&A programme, effectively minimize the potential environmental impacts from the contract. Also, the EM&A programme effectively monitored the environmental impacts from the construction activities and ensure the proper implementation of mitigation measures. No particular recommendation was advised for the improvement of the programme.