Certified by Environmental Team Leader
Verified by Independent Environmental Checker
Contract No. HY/2013/04 HZMB HKBCF –
Infrastructure Works Stage II (Southern Portion)
Quarterly EM&A Report
for October 2018 to November 2018
June
2019
China State Construction Engineering (Hong Kong) Limited
3/F
International Trade Tower
(formerly
Mapletree Bay Point)
348
Kwun Tong Road
Kowloon
Hong
Kong
T
+852 2828 5757
F
+852 2827 1823
mottmac.hk
Information class: |
Standard |
Contents
This Quarterly Environmental Monitoring and Audit (EM&A) Report is prepared for Contract No. HY/2013/04 “Hong Kong-Zhuhai-Macao Bridge Hong Kong Boundary Crossing Facilities – Infrastructure Works Stage II (Southern Portion)” (hereafter referred to as “the Contract”) for the Highways Department of Hong Kong Special Administrative Region (HKSAR). The Contract was awarded to China State Construction Engineering (Hong Kong) Limited (hereafter referred to as “the Contractor”) and Mott MacDonald Hong Kong Limited (MMHK) was appointed as the Environmental Team (ET) by the Contractor.
The Contract is part of the “Hong Kong-Zhuhai-Macao Bridge Hong Kong Boundary Crossing Facilities” (HZMB HKBCF) Project which is a “Designated Project” under Schedule 2 of the Environmental Impact Assessment (EIA) Ordinance (Cap. 499) and for which an EIA Report (Register No. AEIAR-145/2009) was prepared and approved. The current Environmental Permit (EP) for HKBCF, namely No. EP-353/2009/K, was issued on 11 April 2016. These documents are available through the EIA Ordinance Register. Commencement of the Contract took place on 13 March 2015 and the construction works commenced on 13 July 2015.
Mott MacDonald Hong Kong 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 (Version 1.0) and will be providing environmental team services for the Contract. This is the 14th Quarterly EM&A Report for the Contract which summarises findings of the EM&A works for air quality, noise, water quality and waste management for October to November 2018 and the impact dolphin monitoring data and analyses for September to November 2018 (which together form the “reporting period”) in order to tally with the project dolphin monitoring quarterly review period.
Environmental Monitoring and Audit Progress
The EM&A programme was undertaken in accordance with the Updated EM&A Manual for HKBCF (Version 1.0).
The remaining air quality, noise, water quality and dolphin monitoring works under Contract No. HY/2013/01 “HZMB HKBCF – Passenger Clearance Building” were suspended from 1 October 2018. The ET of Contract No. HY/2013/04 is required and continues the full implementation of environmental monitoring commencing on 1 October 2018.
Air quality monitoring stations AMS2, AMS3C and AMS7B are covered by this Contract. It should be noted that the air quality monitoring station AMS6 is covered by Contract No. HY/2011/03 “Hong Kong-Zhuhai-Macao Bridge Hong Kong Link Road (HZMB HKLR) – Section between Scenic Hill and HKBCF”. If the impact air quality monitoring at AMS6 is no longer covered under Contract No. HY/2011/03, it is required to continue such monitoring at AMS6 as part of EM&A programme However, this is subject to ENPO’s final decision on which ET should carry out the monitoring work at these stations.
Noise monitoring stations NMS2 and NMS3C, water quality monitoring works and dolphin monitoring works under HZMB HKBCF are covered by this Contract.
A summary of monitoring and audit activities conducted in the reporting period is listed below:
● 1-hour Total Suspended Particulates (TSP) monitoring: 23 sessions
● 24-hour TSP monitoring: 17 sessions
● Noise monitoring: 10 sessions
● Impact water quality monitoring: 25 sessions
● Impact dolphin monitoring: 6 surveys conducted
● Joint Environmental site inspection: 9 sessions
Breaches of Action and Limit Levels
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 report prepared by Contract No. HY/2011/03.
A summary of environmental exceedances for the reporting period as recorded by the Environmental Team of this Contract are listed below:
Environmental Monitoring |
Parameters |
Action Level |
Limit Level |
Air Quality |
1-hour TSP |
- |
- |
|
24-hour TSP |
- |
- |
Noise |
Leq (30 min) |
- |
- |
Water Quality |
Suspended Solids (SS) |
6 |
- |
|
Turbidity |
1 |
- |
|
Dissolved Oxygen (DO) |
- |
- |
Dolphin Monitoring |
Quarterly analysis |
- |
1 |
The ET of this Contract conducted investigations into the exceedances of impact water quality monitoring and impact dolphin monitoring, and the findings are presented in this report.
Furthermore, impact dolphin monitoring results at all transects during September 2018 are reported in the monthly EM&A Reports for Contract No. HY/2013/01, while impact dolphin monitoring results at all transects during October 2018 and November 2018 are reported in the monthly EM&A Reports for this Contract.
Complaint Log
There was one new complaint received in relation to the environmental impact during the reporting period.
Log No. |
Environmental Complaint Ref. No. |
Date of Complaint Receipt |
Description |
010 |
ENPO-C0139 |
3 October 2018 |
Air Quality |
The complaint referred to a large amount of dust generated due to
lack of water spraying on dirt road at HKBCF Island site. As informed by EPD,
the location under complaint was near the exit/entrance of Contract No.
HY/2013/04 as advised by the complainant.
The complaint
was investigated by the ET of this Contract and the findings are also presented
in this report.
Notifications of Summons and Successful Prosecutions
There were no notifications of summons or prosecutions received during this reporting period.
Reporting Changes
The remaining air quality, noise, water quality and dolphin monitoring works under Contract No. HY/2013/01 “HZMB HKBCF – Passenger Clearance Building” were suspended from 1 October 2018. The ET of Contract No. HY/2013/04 is required and continues the full implementation of environmental monitoring commencing on 1 October 2018.
It should be noted that the air quality monitoring station AMS6 is covered by Contract No. HY/2011/03 “Hong Kong-Zhuhai-Macao Bridge Hong Kong Link Road (HZMB HKLR) – Section between Scenic Hill and HKBCF”.
A proposal by ET to temporarily suspend the water quality monitoring under the EM&A programme during a scheduled period of no marine works under HZMB HKBCF was verified by IEC on 26 October 2018 and approved by EPD on 21 November 2018. Subsequently, the water quality monitoring programme was temporarily suspended by ET after completion of water quality monitoring on 26 November 2018.
This Quarterly Environmental Monitoring and Audit (EM&A) Report is prepared for Contract No. HY/2013/04 “Hong Kong-Zhuhai-Macao Bridge Hong Kong Boundary Crossing Facilities – Infrastructure Works Stage II (Southern Portion)” (hereafter referred to as “the Contract”) for the Highways Department of Hong Kong Special Administrative Region (HKSAR). The Contract was awarded to China State Construction Engineering (Hong Kong) Limited (hereafter referred to as “the Contractor”) and Mott MacDonald Hong Kong Limited (MMHK) was appointed as the Environmental Team (ET) by the Contractor.
The Contract is part of the “Hong Kong-Zhuhai-Macao Bridge Hong Kong Boundary Crossing Facilities” (HZMB HKBCF) Project which is a “Designated Project” under Schedule 2 of the Environmental Impact Assessment (EIA) Ordinance (Cap. 499) and for which an EIA Report (Register No. AEIAR-145/2009) was prepared and approved. The current Environmental Permit (EP) for HKBCF, namely No. EP-353/2009/K, was issued on 11 April 2016. These documents are available through the EIA Ordinance Register. Commencement of the Contract took place on 13 March 2015 and the construction works commenced on 13 July 2015. The works areas of the contract are shown in Appendix A.
This is the 14th Quarterly EM&A Report for the Contract which summarises findings of the EM&A works for air quality, noise, water quality and waste management for October to November 2018 and the impact dolphin monitoring data and analyses for September to November 2018 (which together form the “reporting period”) in order to tally with the project dolphin monitoring quarterly review period.
The organisation chart and lines of communication with respect to the on-site environmental management structure together with the contact information of the key personnel are 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 (AECOM Asia
Co. Ltd.) |
Chief
Resident Engineer |
Alfred Cheng |
3958 7471 |
3468 2076 |
Environmental
Project Office / Independent Environmental Checker (Ramboll Hong Kong Limited) |
Environmental
Project Office Leader |
Y H Hui |
3465 2888 |
3465 2899 |
Independent
Environmental Checker |
Raymond Dai |
3465 2888 |
3465 2899 |
|
|
Environmental
Site Supervisor |
Ray Yan |
5181 8165 |
3465 2899 |
Contractor (China State
Construction Engineering (Hong Kong) Limited) |
Site Agent |
Jason Chung |
9127 8369 |
2459 4336 |
Environmental
Officer |
Xavier Lam |
9493 2944 |
2459 4336 |
|
|
Desmond Ho (until 20 Oct
2018) |
6351 3811 |
2459 4336 |
|
|
K P Ng (from 22 Oct
2018) |
9626 9961 |
2459 4336 |
|
Environmental Team (Mott
MacDonald Hong Kong Limited) |
Environmental
Team Leader |
Gary
Chow |
2828 5874 |
2827 1823 |
24-hour
Complaint Hotline |
- |
- |
5236 7111 |
- |
The Construction Works Programme of the Project is provided in Appendix C.
A summary of the construction activities undertaken during this reporting period is shown below:
● Erection of sign gantries
● Erection of precast segments
● Erection of precast bridge structures
● Construction of parapets for bridge structures
● Construction of Abutment A1601 and associated retaining walls
● Construction of Retaining Wall RW16N and RW16S
● Construction of Bridge D16 in-situ deck
● Construction of utilities cross-over frame under Bridge D9c
● Backfilling walls and formation of fill slopes and road embankment
● Drainage works and watermains laying
● Roadworks and road furniture
● Maintenance of TTA associated with the commissioning of HKBCF and TM-CLKLSC
● No marine-based segment delivery (all segments stored at segment storage yard on HKBCF island site)
● No generation of excavated marine sediment
During this reporting period, temporary soft landscaping works were conducted and marine-based outfall works had not commenced.
The EM&A programme was undertaken in accordance with the Updated EM&A Manual for HKBCF (Version 1.0).
For this reporting period, the remaining air quality, noise, water quality and dolphin monitoring works under Contract No. HY/2013/01 “HZMB HKBCF – Passenger Clearance Building” were suspended from 1 October 2018. The ET of Contract No. HY/2013/04 is required and continues the full implementation of environmental monitoring commencing on 1 October 2018.
Air quality monitoring at stations AMS2, AMS3C and AMS7B, and noise monitoring at station NMS2 and NMS3C, are covered by this Contract. It should be noted that the air quality monitoring station AMS6 is covered by Contract No. HY/2011/03 “Hong Kong-Zhuhai-Macao Bridge Hong Kong Link Road (HZMB HKLR) – Section between Scenic Hill and HKBCF”. If the impact air quality monitoring at AMS6 is no longer covered under Contract No. HY/2011/03, it is required to continue such monitoring at AMS6 as part of EM&A programme However, this is subject to ENPO’s final decision on which ET should carry out the monitoring work at these stations.
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: Construction Dust and Noise Monitoring Locations
Environmental Monitoring |
Identification No. |
Location Description |
Air Quality |
AMS2(3) |
Tung Chung
Development Pier |
|
AMS3C |
Ying Tung
Estate Market Rooftop |
|
AMS6(1) |
Dragonair / CNAC
(Group) Building |
|
AMS7B(3) |
3RS Site
Offices |
Noise |
NMS2(3) |
Seaview
Crescent |
|
NMS3C(2) |
Ying Tung
Estate Refuse Collection Point |
(2) The Action and Limit Levels for schools will be applied for this alternative monitoring location.
(3) Monitoring works at this location by the ET of this Contract commenced on 1 October 2018.
The water quality monitoring works for HZMB HKBCF under the approved EM&A Manual for the reporting period are covered by this Contract. 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.
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(N) |
Impact
Station (Close to HKBCF construction site) |
812942 |
820881 |
IS(Mf)11 |
Impact
Station (Close to HKBCF construction site) |
813562 |
820716 |
IS(Mf)16 |
Impact
Station (Close to HKBCF construction site) |
814328 |
819497 |
IS17 |
Impact
Station (Close to HKBCF construction site) |
814539 |
820391 |
SR3(N) |
Sensitive
receivers (San Tau SSSI) |
810689 |
816591 |
SR4(N) |
Sensitive
receivers (Tai Ho) |
814705 |
817859 |
SR5(N) |
Sensitive
receivers (Artificial Reef in NE Airport) |
812569 |
821475 |
SR6 |
Sensitive
receivers (Sha Chau and Lung Kwu Chau Marine Park) |
805837 |
821818 |
SR7 |
Sensitive
receivers (Tai Mo Do) |
814293 |
821431 |
SR10A(N)
|
Sensitive
receivers (Ma Wan FCZ) 1 |
823644 |
823484 |
SR10B(N2) |
Sensitive
receivers (Ma Wan FCZ) 2 |
823689 |
823159 |
CS(Mf)3(N) |
Control
Station |
808814 |
822355 |
CS(Mf)5 |
Control
Station |
817990 |
821129 |
CS4 |
Control
Station |
810025 |
824004 |
CS6 |
Control
Station |
817028 |
823992 |
CSA |
Control
Station |
818103 |
823064 |
The dolphin monitoring works for the Contract are covered by Contract No. HY/2011/03 “Hong Kong-Zhuhai-Macao Bridge Hong Kong Link Road (HZMB HKLR) – Section between Scenic Hill and HKBCF” with the reporting of reporting results presented by the ET of Contract No. HY/2013/04. 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.
Table 2.3 shows the co-ordinates for the transect lines and layout map.
The revised layout map showing the transect lines have been provided by AFCD and are shown in Figure 2.4.
Table 2.3: Impact Dolphin Monitoring Line Transect Co-ordinates (Provided by AFCD)
Transect |
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#^ |
805476 |
820800 |
113.877995 |
22.325951 |
|
805476 |
826654 |
113.877882 |
22.378815 |
3^ |
806464 |
821150 |
114.030267 |
22.196697 |
|
806464 |
822911 |
114.047344 |
22.196712 |
4^ |
807518 |
821500 |
114.033651 |
22.206219 |
|
807518 |
829230 |
114.108618 |
22.206267 |
5^ |
808504 |
821850 |
114.037037 |
22.215126 |
|
808504 |
828602 |
114.102523 |
22.215169 |
6^ |
809490 |
822150 |
114.039938 |
22.224033 |
|
809490 |
825352 |
114.070995 |
22.224056 |
7#^ |
810499 |
822000 |
114.038474 |
22.233143 |
|
810499 |
824613 |
114.063820 |
22.233163 |
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 |
24^ |
805476 |
815900 |
113.979368 |
22.187721 |
|
805476 |
819100 |
114.010398 |
22.187756 |
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.
(c) ^ The change of transect lines 2, 3, 4, 5, 6 and 7 and new transect line 24 were justified and verified by the ET Leader for Contract No. HY/2010/02 and the IEC respectively on 24 March 2017 and it was approved by EPD on 12 May 2017.
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 this Contract and Contract No. HY/2011/03.
The Action and Limit Levels 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, mg/m3 |
Limit Level, mg/m3 |
AMS2 – Tung
Chung Development Pier |
374 |
500 |
AMS3C – Ying
Tung Estate Market Rooftop |
368 |
500 |
AMS6 – Dragonair / CNAC (Group) Building (HKIA) |
360 |
500 |
AMS7B – 3RS
Site Offices |
370 |
500 |
Table 2.5: Action and Limit Levels for 24-hour TSP
Monitoring Station |
Action Level, mg/m3 |
Limit Level, mg/m3 |
AMS2 – Tung
Chung Development Pier |
176 |
260 |
AMS3C – Ying
Tung Estate Market Rooftop |
167 |
260 |
AMS6 – Dragonair / CNAC (Group) Building (HKIA) |
173 |
260 |
AMS7B – 3RS
Site Offices |
183 |
260 |
If exceedance(s) at these stations 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.
The Action and Limit Levels for construction noise are defined in Table 2.6.
Table 2.6: Action and Limit Level for Construction Noise
Monitoring Station |
Time Period |
Action Level |
Limit Level |
NMS2 |
07:00 – 19:00
hours on normal weekdays |
When one
documented complaint is received |
70 dB(A) |
NMS3C |
70/65 dB(A)* |
Remark: Limit Level for schools will be applied for NMS3C. Day time noise Limit Level of 70 dB(A) applies to education institutions, while 65 dB(A) applies during the school examination period.
If exceedance(s) at these stations 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.
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 |
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.
If exceedance(s) at these stations 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.
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 |
|
|
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)] |
|
|
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.
The event and action plans for air quality, noise, water quality and dolphin monitoring are provided in Appendix D.
Environmental mitigation measures for the contract were recommended in the approved EIA Report. Appendix E lists the recommended mitigation measures and the implementation status.
The monitoring results for AMS2, AMS3C and AMS7B are reported in the monthly EM&A Report prepared for this Contract.
The monitoring results for AMS6 are reported in the monthly EM&A Reports prepared for Contract No. HY/2011/03.
Summary of Action and Limit Level exceedance of 1-hr TSP level and 24-hr TSP level at AMS6 is reported in the monthly EM&A Reports (for October and November 2018) 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 station AMS2, AMS3C and AMS7B by the Environmental Team of this Contract during the reporting period.
The monitoring results for NMS2 and NMS3C are reported in the monthly EM&A Reports (for October and November 2018) prepared for this Contract.
No noise exceedances were recorded at stations NMS2 and NMS3C by the ET of this Contract during the reporting period.
The monitoring results for the twenty-one monitoring stations are reported in the monthly EM&A Report (for October and November 2018) prepared for this Contract.
During the reporting period, a total of seven exceedances of water quality (consisting of 6 Action Level exceedances of suspended solids and one Action Level exceedance of turbidity) were recorded by the Environmental Team of this Contract during October and November 2018. Following investigations, it was concluded that the exceedances were not related to the HZMB HKBCF project. The detailed investigation results of these exceedances recorded are presented in Appendix K.
Water quality exceedances recorded during the reporting period are summarised in Table 3.1.
Table 3.1: Summary of Water Quality Exceedances during Reporting Period
Date |
Parameter
(Units) |
Station |
Depth |
Exceedance
Recorded during Mid-ebb Tide |
Exceedance
Recorded during Mid-flood Tide |
10 Oct
2018 |
SS |
SR6 |
Depth
Average |
- |
Action
Level |
24 Oct
2018 |
TURB |
IS(Mf)6 |
Depth
Average |
Action
Level |
- |
23 Nov
2018 |
SS |
IS10(N) |
Depth
Average |
- |
Action
Level |
23 Nov
2018 |
SS |
IS(Mf)11 |
Depth
Average |
- |
Action
Level |
23 Nov
2018 |
SS |
SR7 |
Depth
Average |
- |
Action
Level |
26 Nov
2018 |
SS |
SR10A(N) |
Depth
Average |
- |
Action
Level |
26 Nov
2018 |
SS |
SR10B(N2) |
Depth
Average |
- |
Action
Level |
In accordance with the updated EM&A Manual, pre-set and fixed transect line vessel based dolphin survey was required in two AFCD designated areas (Northeast Lantau (NEL) and Northwest Lantau (NWL) survey areas). The impact dolphin monitoring at each survey area should be conducted twice per month.
The impact dolphin monitoring conducted is vessel-based and combines line-transect and photo-ID methodology, which have adopted similar survey methodologies as that adopted during baseline monitoring to facilitate comparisons between data sets.
The layout map of impact dolphin monitoring has been provided by AFCD and is shown in Figure 1 of Appendix J.
The effort summary and sighting details during the reporting period are shown in the Appendix J. A summary of key findings of the dolphin surveys completed during the reporting period is shown below in Table 3.2:
Table 3.2: Summary of Key Dolphin Survey Findings in the Reporting Period
Parameter |
Findings |
Number of
Impact Surveys Completed^ |
6 |
Survey
Distance Travelled under Favourable On-Effort Condition |
795 km |
Number of
Sightings |
6 sightings (all
sightings were recorded during “on effort” search) |
Number of
dolphin individual sighted |
14 individuals
|
Dolphin
Encounter Rate# |
NEL: 0.00 NWL: 1.5 ±
2.25 |
Dolphin Group
Size |
Average of
NEL: 0 Average of
NWL: 2.3 ± 1.03 (n = 6) Varied from 1
– 4 individuals |
Most frequent
dolphin sighting area |
NWL, in
waters around Lung Kwu Chau |
Remarks: |
^ |
|
Completion
of line transect survey of NEL and NWL survey area once was counted as one
complete survey. |
||
|
# |
|
Dolphin
Encounter Rate = |
Sum of 1st, 2nd & 3rd
month’s total sighting |
X 100 km |
Sum of 1st, 2nd & 3rd month’s
total effort |
|||||
|
|
|
(encounter rates are calculated using on
effort sightings made under favourable conditions only.) |
. Event and Action Plan for Impact Dolphin Monitoring was triggered. For details of investigation, please refer to Appendix K.
Table 3.3: Summary of STG and ANI encounter rates in the Reporting Period
|
NEL |
NWL |
Level Exceeded |
STG* |
0.0 |
1.5 ± 2.25 |
Limit |
ANI** |
0.0 |
3.0 ± 3.89 |
Remarks: |
* |
Quarterly
Average Encounter Rate of Number of Dolphin Sightings (STG) presents
averaged encounter rates of the three monitored months in terms of groups
per 100km per survey event. |
||
|
|
|
||
|
|
STG Encounter
rate = |
(Average of (total number of Individual/total effort) of 1st
and 2nd completed survey# of 1st month +
Average of (total number of Individual/total effort) of 1st and 2nd
completed survey# of 2nd month + Average of (total
number of Individual/total effort) of 1st and 2nd completed
survey# of 3rd month) |
X 100km |
3 |
||||
|
** |
Quarterly
Average Encounter Rate of Total Number of Dolphins (ANI) presents averaged
encounter rates of the three monitored months in terms of individuals per
100km per survey event. |
||
|
|
ANI Encounter
rate = |
(Average of (total number of Individual/total
effort) of 1st and 2nd completed survey# of
1st month+ Average of (total number of Individual/total effort) of
1st and 2nd completed survey# of 2nd
month + Average of (total number of Individual/total effort) of 1st
and 2nd completed survey# of 3rd month) |
X 100 km |
|
|
3 |
Details of the comparison and analysis methodology and their findings and discussions are annexed in Appendix J.
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.
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.
Implementation status of the Regular Marine Travel Route Plan (RMTRP) including checking of Contractor’s marine traffic records by ER, ETL and IEC/ENPO would be conducted in the event of Contract-related marine traffic taking place during the reporting period.
According to the Contractor of HY/2013/04, all marine-based segment deliveries were completed in January 2018 and no marine-based works were conducted under the contract during the reporting period.
Implementation status of the Dolphin Watching Plan (DWP) was checked by ET. Training of marine mammal observer (MMO) was given to relevant staff and relevant records were kept properly. Silt curtains were provided at each box culvert for marine works areas in accordance with the approved Dolphin Watching Plan. The silt curtains were inspected regularly by ET and Contractor and the implementation was found to be in working order.
The Contractor registered as a chemical waste producer for the Contract. Sufficient numbers of receptacles were available for general refuse collection and sorting. As a practical means, the disposal operation is managed by a single HKBCF contractor who is also responsible for applying dumping permit and its subsequent extension applications from EPD. Contract No. HY/2013/03 has been assigned to coordinate and arrange for disposal of extracted marine sediment from this Contract.
There was no generation of excavated sediment for treatment during this reporting period. Any treatment of excavated marine sediment will be conducted using cement solidification / stabilization (Cement S/S) techniques and the treated sediment will be reused onsite for either backfilling or landscaping (e.g. berm material).
The summary of waste flow table is detailed in Appendix G.
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 Packing, Labelling and Storage of Chemical Waste.
After the acceptance of the review of the approved Sediment Quality Report (SQR) for this Project under EPD letter dated 19 August 2015, an approval to dispose the marine sediment extracted from bored piling for this Project was then approved under memo from Secretary, Marine Fill Committee of CEDD dated 20 August 2015 for the disposal of marine sediment extracted from bored piling works. The disposal sites allocated to this Project are the Mud Pit CMP2 of the Confined Marine Sediment Disposal Facility to the South of The Brothers (or at the East of Sha Chau). As advised by CEDD in the memo dated 19 February 2016, from 00:00 on 22 March 2016 onward, the disposal space at CMP2 of the South of The Brothers is closed and all disposal of contaminated sediment is to be carried out at CMP Vd to the East of Sha Chau (ESC).
As Contract No. HY/2013/01 has commenced treatment of the extracted marine sediment, treatment will continue and the treated marine sediment will be re-used within the HKBCF Island. On the other hand, Contract Nos. HY/2013/02, HY/2013/03 and HY/2013/04 have not commenced the treatment of extracted marine sediment. Therefore the marine sediment extracted from these three Contracts will be disposed to the allocated disposal sites directly without treatment. As a practical means, the disposal operation is managed by one contractor who is also responsible for applying dumping permit and its subsequent extension applications from EPD. Contract No. HY/2013/03 has been assigned to coordinate and arrange for disposal of extracted marine sediment from all three Contracts.
The SQR was further reviewed in mid-2016. EPD has no comment to extend the validity of the SQR to August 2017 under letter dated 18 August 2016.
Based on the actual piling operation, the estimated quantity of marine sediment to be extracted has been revised from 85,000 m3 to 126,000 m3 (bulk volume). EPD has no comments on the request as in the letter dated 20 October 2016. The Secretary of Marine Fill Committee, CEDD approved the increasing quantity in the memo dated 10 November 2016.
During the course of reviewing the SQR, it was noted that the contamination level of the marine sediment extracted from the inner part of the HKBCF Island was not identified during the previous sampling and testing. As requested by EPD, sampling and testing are required. The Sediment Sampling and Testing Proposal (SSTP) for the inner area of the HKBCF Island was approved by EPD on 2 June 2016.
As in the agreed SSTP for the inner area of the HKBCF Island, samples were taken from the seventeen batches of stockpiled marine sediments and from five boreholes each in one of the five sampling grids. After conducting chemical tests on samples, six batches of stockpiled samples under Contract No. HY/2013/03 and all eight batches of stockpiled samples under Contract No. HY/20013/04 are classified as Category L sediment. The Secretary of Marine Fill Committee of CEDD allocated disposal sites under memo dated 24 October 2016 and dated 22 November 2016 for disposal of a total of 9,500 m3 in-situ volume of Category L sediment (using a bulk factor of 1.3). The Category L sediment was disposed in December 2016.
One sample from the batch of stockpiled marine sediment under Contract No. HY/2013/03 and samples from all five sampling grids had contamination levels exceeding the Lower Chemical Exceedance Levels (LCEL) and biological screenings were carried out. All samples passed the biological screenings and are classified as Category Mp sediment and to be disposed off site using Type II confined marine disposal method the same method used for marine sediment extracted from other part of the HKBCF Island.
The barge for disposal of marine sediment will morn at the temporary loading and unloading at the east shore of the HKBCF Island, which has been being used by reclamation contractor (Contract No. HY/2010/02) for reclamation activities. In terms of safety consideration, each dumping date will be allocated to one Contract. The quantity of marine sediment disposed on the date is from one Contract.
During dumping, each Contractor is responsible for transporting the marine sediment from his site area to the barge. The estimated quantity of marine sediment in each truck is confirmed by Resident Site Staff of each Contract. The trip tickets for transportation and disposal of marine sediment are collected and checked. Contract No. HY/2013/03 as the dumping permit holder is responsible for reporting to EPD the quantity disposed of as the condition stipulated in the dumping permit.
AECOM has confirmed that the disposal of excavated marine sediments to allocated dumping site via Contract No. HY/2013/03 has been completed with the last batch disposal on 30 August 2017. The total quantities disposed are presented in the following table (Table 3.4):
Table 3.4: Summary of Marine Sediment disposed to Dumping Site via Contract No. HY/2013/03
Month/Year |
Type of Sediment and Quantity Disposed (m3) |
|
|
Cat. L (in
Type I) |
Type II |
Total = |
3,570 |
39,814 |
Note: For monthly breakdown of these quantities, please refer to the waste flow table in Appendix G.
The valid environmental licences and permits during the reporting period are summarized in Appendix H.
Summary of Action and Limit Level exceedance of 1-hr TSP level and 24-hr TSP level at AMS6 is reported in the monthly EM&A Reports (for October and November 2018) 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 stations AMS2, AMS3C and AMS7B by the Environmental Team of this Contract the reporting period.
There was no Action and Limit Level exceedance for noise recorded at station NMS2 and station NMS3C by the Environmental Team of this Contract during the reporting period.
During the reporting period, a total of seven exceedances of water quality (consisting of 6 Action Level exceedances of suspended solids and one Action Level exceedance of turbidity) were recorded by the Environmental Team of this Contract during October and November 2018. Following investigations, it was concluded that the exceedances were not related to the HZMB HKBCF project.
Impact dolphin monitoring results at all transects during September 2018 are reported in the monthly EM&A Reports for Contract No. HY/2013/01. Impact dolphin monitoring results at all transects during October 2018 and November 2018 are reported in the monthly EM&A Reports for this Contract.
There was one complaint received in relation to the environmental impact during the reporting period and investigated by the ET of the Contract. The summary of environmental complaints is presented in Table 4.1. The details of cumulative statistics of Environmental Complaints are provided in Appendix H.
Table 4.1: Summary of Environmental Complaints for the Reporting Period
Log No. |
Environmental Complaint Ref. No. |
Date of Complaint Receipt |
Description |
010 |
ENPO-C0139 |
3 October
2018 |
Air Quality |
Environmental Complaint Ref. No. ENPO-C0139
The
complaint referred to a large amount of dust generated due to lack of water
spraying on dirt road at HKBCF Island site. As informed by EPD, the location
under complaint was near the exit/entrance of Contract No. HY/2013/04 as
advised by the complainant.
The relevant mitigation measures for access roads for the HZMB BCF Island site, as required in the EMIS and statutory requirements in the Air Pollution Control (Construction Dust) Regulations and other applicable environmental legislation, are consolidated as follows:
● Immediately before leaving a construction site, every vehicle shall be washed to remove any dusty materials from its body and wheels and to ensure that no earth, mud or debris is deposited by them on roads.
● Vehicle washing facilities with high pressure water jet should be provided at every discernible or designated vehicle exit point. The area where vehicle washing takes place and the road section between the washing facilities and the exit point should be paved with concrete, bituminous materials or hardcores.
● Every main haul road shall be paved with concrete, bituminous materials, hardcores or metal plates, and kept clear of dusty materials, or sprayed with water or a dust suppression chemical so as to maintain the entire road surface wet.
● The portion of any road leading only to construction site that is within 30m of a vehicle entrance or exit should be kept clear of dusty materials.
● The Contractor should undertake proper watering on all exposed spoil (with at least 8 times per day) throughout the construction phase.
The Contractor’s site watering record for 2 and 3 October 2018 as checked by ET was normal with watering provided 8 times per day.
As informed by the Contractor of HY/2013/04, water spray was provided by water truck for the HY/2013/04 site on the morning of 3 October 2018.
During ET’s regular weekly site inspection on 3 October 2018 (between 14:00 and 15:00), a site observation regarding air quality was made, namely dust emission was observed along haul road near bridge D12 area; the Contractor was reminded to provide water spraying to ensure wet surface. Other haul roads within HY/2013/04 site were found to have been provided with water spray.
The vehicular entrance of and the wheel wash facility at the vehicular exit of HY/2013/04 site boundary were also inspected and found to be operating normally with no fugitive dust observed.
The Contractor’s site watering plan (annotated with locations of the abovementioned photos) and wheel wash facility are presented in Attachments 3 and 4 respectively of the investigation report.
Notifications of Summons and Successful Prosecutions
Statistics on notifications of summons and successful prosecutions are summarized in Appendix I.
According to the environmental site inspections undertaken during the reporting period, the following recommendations were provided:
● The Contractor was reminded to reinstate the silt curtains.
● The Contractor was reminded to clear the C&D waste as soon as possible.
● The Contractor was reminded to sort the C&D waste and clear the general refuse as soon as possible.
● The Contractor was reminded to provide water spraying on the haul road regularly to keep the road surface wet.
● The Contractor was reminded to clearly sign and designate the C&D waste collection area.
● The Contractor was reminded to clear the loose general refuse as soon as possible.
● The Contractor was reminded to provide drip tray for chemical containers.
● The Contractor was reminded to ensure that all vehicles exited the site area via the wheel wash area.
● The Contractor was reminded to provide the required labels for chemical containers.
● The Contractor was reminded to provide a new NRMM label for the generator.
● The Contractor was reminded to properly designate the temporary storage area for construction materials.
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.
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.
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 ensured the proper implementation of mitigation measures. No particular recommendation was advised for the improvement of the programme.
General
Commencement of the Contract took place on 13 March 2015 and the construction works of the Contract commenced on 13 July 2015. This is the 14th Quarterly EM&A Report for the Contract which summaries findings of the EM&A works from 1 October 2018 to 30 November 2018, as well as the EM&A works for dolphin monitoring from 1 September 2018 to 30 November 2018 (which together form the “reporting period”) in order to tally with the project dolphin monitoring quarterly review period.
Breaches of Action and Limit Levels
Air Quality
There was no Action and Limit Level exceedance of 1-hr TSP level and 24-hr TSP level recorded at stations AMS2, AMS3C and AMS7B by the Environmental Team of this Contract during the reporting period.
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 October and November 2018) prepared by Contract No. HY/2011/03.
Noise
There was no Action and Limit Level exceedance for noise recorded at stations NMS2 and NMS3C by the Environmental Team of this Contract during the reporting period.
Water Quality
During the reporting period, a total of seven exceedances of water quality (consisting of 6 Action Level exceedances of suspended solids and one Action Level exceedance of turbidity) were recorded by the Environmental Team of this Contract during October and November 2018. Following investigations, it was concluded that the exceedances were not related to the HZMB HKBCF project.
Chinese White Dolphin
Limit Level exceedance of impact dolphin monitoring was recorded by the Environmental Team of this Contract for the period of September 2018 to November 2018.
Impact dolphin monitoring results at all transects during September 2018 are reported in the monthly EM&A Reports for Contract No. HY/2013/01, while impact dolphin monitoring results at all transects during October 2018 and November 2018 are reported in the monthly EM&A Reports for this Contract.
Environmental Site Inspections
Environmental site inspection was carried out on 3, 10, 18, 22 and 31 October and 7, 14, 19 and 28 November 2018. Recommendations on remedial actions were given to the Contractors for the deficiencies identified during the site inspections.
Complaints
There was one new complaint received in relation to the environmental impact during the reporting period. The complaint referred to a large amount of dust generated due to lack of water spraying on dirt road at HKBCF Island site. As informed by EPD, the location under complaint was near the exit/entrance of Contract No. HY/2013/04 as advised by the complainant. The complaint was investigated by the ET of this Contract.
Notifications of Summons and Successful Prosecutions
There were no notifications of summons or prosecutions received during the reporting period.
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
Appendix J. Impact Dolphin Monitoring Survey Findings and Analysis
Appendix K. Incident Report on Action Level or Limit Level Non-compliance