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 April 2018 to June 2018
July
2018
China State Construction Engineering (Hong Kong) Limited
3/F
Mapletree Bay Point
348
Kwun Tong Road
Kowloon
Hong
Kong
T
+852 2828 5757
F
+852 2827 1823
mottmac.hk
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 12th Quarterly EM&A Report for the Contract which summaries findings of the EM&A works during the reporting period from 1 April 2018 to 30 June 2018 (the “reporting 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). It should be noted that, for this Contract:
● The air quality monitoring works are covered by Contract No. HY/2011/03 “Hong Kong-Zhuhai-Macao Bridge Hong Kong Link Road – Section between Scenic Hill and HKBCF” and Contract No. HY/2013/01 “Hong Kong-Zhuhai-Macao Bridge HKBCF – Passenger Clearance Building”; and
● The noise, water quality and marine ecology monitoring works are covered by Contract No. HY/2013/01.
The ET of the Contract or another ET of the HZMB project is required to conduct impact air quality monitoring at AMS6 and AMS7B, noise monitoring at NMS2 and NMS3B, water quality monitoring at the twenty-one stations and dolphin monitoring at the twenty-four transects as part of EM&A programme if these monitoring stations are no longer covered under Contract Nos. HY/2011/03 and HY/2013/01 (as the case may be). However, this is subject to ENPO’s final decision on which ET should carry out the monitoring work at these stations.
The dates of site inspection during the reporting period are listed below:
● 4, 11, 18 and 23 April, 2, 10, 14, 23 and 30 May and 6, 11, 20 and 27 June 2018
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 is reported in the monthly EM&A report 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 AMS7B by the Environmental Team of Contract No. HY/2013/01 during the reporting period.
There was no Action and Limit Level exceedance for noise recorded at station NMS2 and station NMS3B by the Environmental Team of Contract No. HY/2013/01 during the reporting period.
During April 2018, a total of five Action Level exceedances of SS were recorded by the Environmental Team of Contract No. HY/2013/01 and were referred to this Contract for follow-up. The ET of this Contract conducted investigations and the findings with respect to the Contract can be referred to the corresponding monthly EM&A Report prepared under Contract No. HY/2013/01.
During May 2018, a total of four Action Level exceedances of water quality (consisting of two Action Level exceedances of turbidity and two Action Level exceedances of dissolved oxygen) were recorded by the Environmental Team of Contract No. HY/2013/01 and were referred to this Contract for follow-up. The ET of this Contract conducted investigations and the findings with respect to the Contract can be referred to the corresponding monthly EM&A Report prepared under Contract No. HY/2013/01.
During June 2018, a total of twenty-one exceedances of water quality (consisting of 18 Action Level and two Limit Level exceedances of dissolved oxygen, and one Action Level exceedance of turbidity) were recorded by the Environmental Team of Contract No. HY/2013/01 and were referred to this Contract for follow-up. The ET of this Contract conducted investigations and the findings with respect to the Contract can be referred to the corresponding monthly EM&A Report prepared under Contract No. HY/2013/01.
Furthermore, Limit Level exceedances of impact dolphin monitoring were recorded by the Environmental Team of Contract No. HY/2013/01 during the period of March 2018 to May 2018 and investigated by the ET of Contract No. HY/2013/01.
Impact dolphin monitoring results at all transects during the reporting period are reported in the monthly EM&A Reports for Contract No. HY/2013/01.
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 |
009 |
ENPO-C0135 |
22 June 2018 |
Water Quality |
The complaint was about discharge of muddy water from HKBCF. According to site photos provided by HyD, it is noticed that there was muddy water discharged via as-constructed box culverts/outfall structures at various parts of seawall on 13 June 2018.
The complaint investigation by the ET of the Contract is ongoing and the findings will be presented in the next Quarterly EM&A report.
Notifications of Summons and Successful Prosecutions
There were no notifications of summons or prosecutions received during this reporting period.
Reporting Changes
There was no reporting change during the reporting period.
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 12th Quarterly EM&A Report summarising the findings of EM&A activities conducted under the Contract from 1 April 2018 to 30 June 2018 (the “reporting 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 |
|
|
Billy Lao |
6679 1950 |
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:
● Box Culvert D: whole structure completed
● Box Culvert C: whole structure completed
● Pier Column: no works done
● Cofferdam Removal Works (land-based)
● Seawall Reinstatement Works (land-based)
● Segment Erection: 202 no. completed
● No marine-based segment delivery (all segments stored at segment storage yard on HKBCF island site)
● Depressed road: whole structure completed
● No generation of excavated marine sediment
During this reporting month, 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). It should be noted that, for this Contract:
● The air quality monitoring works are covered by Contract No. HY/2011/03 “Hong Kong-Zhuhai-Macao Bridge Hong Kong Link Road – Section between Scenic Hill and HKBCF” and Contract No. HY/2013/01 “Hong Kong-Zhuhai-Macao Bridge HKBCF – Passenger Clearance Building”; and
● The noise monitoring works are covered by Contract No. HY/2013/01 “Hong Kong-Zhuhai-Macao Bridge HKBCF – Passenger Clearance Building”.
The ET of the Contract or another ET of the HZMB project is required to conduct impact air quality monitoring at AMS6 and AMS7B 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/2011/03 and HY/2013/01 (as the case may be). 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 |
AMS6(1) |
Dragonair/CNAC (Group)
Building |
|
AMS7B(1) |
3RS Site
Offices |
Noise |
NMS2(2) |
Seaview
Crescent |
|
NMS3B(2)(3) |
AECOM PRE’s
Office |
Remarks: (1) The ET of this Contract should conduct impact air quality monitoring at the AMS listed in the table as part of EM&A programme according to latest notification from ENPO when the monitoring station(s) is/are no longer covered by another ET of the HZMB project.
(2) 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.
(3) The Action and Limit Levels for schools will be applied for this alternative monitoring location.
The water quality monitoring works for the Contract are covered by Contract No. HY/2013/01 “Hong Kong-Zhuhai-Macao Bridge HKBCF – Passenger Clearance Building”. 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/2013/01. However, this is subject to ENPO’s final decision on which ET should carry out the monitoring work at these stations.
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/2013/01 “Hong Kong-Zhuhai-Macao Bridge HKBCF – Passenger Clearance Building”. The ET of the Contract or another ET of the HZMB project is required to conduct dolphin monitoring at the twenty-four transects as part of EM&A programme if these transects are no longer covered under Contract No. HY/2013/01. 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 quarterly EM&A reports prepared for Contract Nos. HY/2013/01 and 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 |
AMS6 – Dragonair / SNAC (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 |
AMS6 – Dragonair / SNAC (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
Parameter |
Action Level |
Limit Level |
07:00 – 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.
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 AMS6 and AMS7B are reported in the monthly EM&A Reports (for April, May and June 2018) prepared for Contract Nos. HY/2011/03 and HY/2013/01 respectively.
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 April, May and June 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 AMS7B by the Environmental Team of Contract No. HY/2013/01 during the reporting period.
The monitoring results for NMS2 and NMS3B are reported in the monthly EM&A Reports (for April, May and June 2018) prepared for Contract No. HY/2013/01.
No noise exceedances were recorded at stations NMS2 and NMS3B by the ET of Contract No. HY/2013/01 during the reporting period.
The monitoring results for the twenty-one monitoring stations are reported in the monthly EM&A Report (for April, May and June 2018) prepared for Contract No. HY/2013/01.
During April 2018, a total of five Action Level exceedances of SS were recorded by the Environmental Team of Contract No. HY/2013/01 and were referred to this Contract for follow-up. The ET of this Contract conducted investigations and the findings with respect to the Contract can be referred to the corresponding monthly EM&A Report prepared under Contract No. HY/2013/01.
During May 2018, a total of four Action Level exceedances of water quality (consisting of two Action Level exceedances of turbidity and two Action Level exceedances of dissolved oxygen) were recorded by the Environmental Team of Contract No. HY/2013/01 and were referred to this Contract for follow-up. The ET of this Contract conducted investigations and the findings with respect to the Contract can be referred to the corresponding monthly EM&A Report prepared under Contract No. HY/2013/01.
During June 2018, a total of twenty-one exceedances of water quality (consisting of 18 Action Level and two Limit Level exceedances of dissolved oxygen, and one Action Level exceedance of turbidity) were recorded by the Environmental Team of Contract No. HY/2013/01 and were referred to this Contract for follow-up. The ET of this Contract conducted investigations and the findings with respect to the Contract can be referred to the corresponding monthly EM&A Report prepared under Contract No. HY/2013/01.
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 |
2 Apr
2018 |
SS |
IS5 |
Depth
Average |
Action
Level |
- |
18 Apr
2018 |
SS |
SR6 |
Depth
Average |
- |
Action
Level |
18 Apr 2018 |
SS |
SR7 |
Depth
Average |
- |
Action
Level |
20 Apr
2018 |
SS |
IS10(N) |
Depth
Average |
- |
Action
Level |
23 Apr
2018 |
SS |
SR7 |
Depth
Average |
- |
Action
Level |
13 May
2018 |
Turbidity |
IS(Mf)11 |
Depth
Average |
- |
Action
Level |
13 May
2018 |
Turbidity |
SR5(N) |
Depth
Average |
- |
Action
Level |
25 May
2018 |
DO |
IS8 |
Bottom |
Action
Level |
- |
28 May
2018 |
DO |
IS5 |
Bottom
|
Action
Level |
- |
1 Jun
2018 |
DO |
SR6 |
Surface
and Middle |
Action
Level |
- |
1 Jun
2018 |
DO |
SR6 |
Bottom |
Action
Level |
- |
11 Jun
2018 |
DO |
SR6 |
Surface
and Middle |
- |
Action
Level |
13 Jun
2018 |
DO |
SR6 |
Surface
and Middle |
- |
Action
Level |
13 Jun
2018 |
DO |
SR6 |
Bottom |
- |
Action
Level |
15 Jun
2018 |
DO |
SR6 |
Surface
and Middle |
- |
Action
Level |
15 Jun
2018 |
DO |
SR6 |
Bottom |
- |
Action
Level |
15 Jun
2018 |
DO |
SR7 |
Surface
and Middle |
- |
Action
Level |
15 Jun
2018 |
DO |
IS(Mf)11 |
Surface
and Middle |
- |
Action
Level |
25 Jun
2018 |
DO |
IS10(N) |
Bottom |
Action
Level |
- |
25 Jun
2018 |
Turbidity |
IS(Mf)6 |
Depth
Average |
Action
Level |
- |
27 Jun
2018 |
DO |
IS10(N) |
Bottom |
Action
Level |
Action
Level |
27 Jun
2018 |
DO |
IS(Mf)11 |
Bottom |
Action
Level |
Action
Level |
27 Jun
2018 |
DO |
SR6 |
Surface
and Middle |
- |
Action
Level |
29 Jun
2018 |
DO |
IS5 |
Bottom |
Action
Level |
- |
29 Jun
2018 |
DO |
SR10A(N) |
Surface
and Middle |
- |
Limit
Level |
29 Jun
2018 |
DO |
SR10A(N) |
Bottom |
- |
Action
Level |
29 Jun
2018 |
DO |
SR10B(N2) |
Surface
and Middle |
- |
Limit
Level |
29 Jun
2018 |
DO |
SR10B(N2) |
Bottom |
- |
Action
Level |
The details of water quality exceedances can be made reference to the monthly EM&A reports under Contract No. HY/2013/01.
The monitoring results for dolphin monitoring during the reporting periods are reported in the monthly EM&A Reports (for April, May and June 2018) prepared for Contract No. HY/2013/01.
Limit Level exceedance of impact dolphin monitoring was recorded by the Environmental Team of Contract No. HY/2013/01 during the period of March 2018 to May 2018 and investigated by the ET of Contract No. HY/2013/01.
Dolphin monitoring exceedances recorded are summarised in Table 3.2.
Table 3.2: Action and Limit Level Exceedance for Dolphin Monitoring
Period |
Parameter |
Area |
Exceedance Recorded |
Mar 2018 –
May 2018 |
Ecology (Chinese
White Dolphin Monitoring) |
Northeast Lantau (NEL) |
Limit Level |
Mar 2018 –
May 2018 |
Ecology
(Chinese White Dolphin Monitoring) |
Northwest
Lantau (NWL) |
Limit Level |
The details of the dolphin monitoring exceedances can be referred to in the Monthly EM&A reports under Contract No. HY/2013/01.
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 3.3):
Table 3.3: 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 April, May and June 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 AMS7B by the Environmental Team of Contract No. HY/2013/01 during the reporting period.
There was no Action and Limit Level exceedance for noise recorded at station NMS2 and station NMS3B by the Environmental Team of Contract No. HY/2013/01 during the reporting period.
During April 2018, a total of five Action Level exceedances of SS were recorded by the Environmental Team of Contract No. HY/2013/01 and were referred to this Contract for follow-up. The ET of this Contract conducted investigations and the findings with respect to the Contract can be referred to the corresponding monthly EM&A Report prepared under Contract No. HY/2013/01.
During May 2018, a total of four Action Level exceedances of water quality (consisting of two Action Level exceedances of turbidity and two Action Level exceedances of dissolved oxygen) were recorded by the Environmental Team of Contract No. HY/2013/01 and were referred to this Contract for follow-up. The ET of this Contract conducted investigations and the findings with respect to the Contract can be referred to the corresponding monthly EM&A Report prepared under Contract No. HY/2013/01.
During June 2018, a total of twenty-one exceedances of water quality (consisting of 18 Action Level and two Limit Level exceedances of dissolved oxygen, and one Action Level exceedance of turbidity) were recorded by the Environmental Team of Contract No. HY/2013/01 and were referred to this Contract for follow-up. The ET of this Contract conducted investigations and the findings with respect to the Contract can be referred to the corresponding monthly EM&A Report prepared under Contract No. HY/2013/01.
Furthermore, Limit Level exceedances of impact dolphin monitoring were recorded by the Environmental Team of Contract No. HY/2013/01 during the period of March 2018 to May 2018 and investigated by the ET of Contract No. HY/2013/01.
Impact dolphin monitoring results at all transects during the reporting period are reported in the monthly EM&A Reports prepared for Contract No. HY/2013/01.
There was one new complaint received in relation to the environmental impact during the reporting period. 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 Month
Log No. |
Environmental Complaint Ref. No. |
Date of Complaint Receipt |
Description |
009 |
ENPO-C0135 |
22 June 2018 |
Water Quality
|
Environmental Complaint Ref. No. ENPO-C0135
The complaint was about discharge of muddy water from HKBCF. According to site photos provided by HyD, it is noticed that there was muddy water discharged via as-constructed box culverts/outfall structures at various parts of seawall on 13 June 2018.
The complaint investigation by the ET of the Contract is ongoing and the findings will be presented in the next Quarterly EM&A 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 clear the general refuse as soon as possible.
● The Contractor was reminded to clear the stagnant water or provide effective mosquito mitigation measures.
● The Contractor was reminded to sort and clear the C&D waste as soon as possible.
● The Contractor was reminded to provide water spraying to keep road surface wet.
● The Contractor was reminded to secure the silt curtain to prevent contained site runoff entering the open waters.
● The Contractor was reminded to provide drip tray for the chemical container.
● The Contractor was reminded to provide larvicide to prevent growth of mosquito.
● The Contractor was reminded to check the integrity of the silt curtain.
● The Contractor was reminded to clear the stagnant water as soon as possible.
● The Contractor was reminded to have good maintenance for the lifting crane.
● The Contractor was reminded to provide the NRMM label for the lifting crane.
● The Contractor was reminded to properly sort the construction materials.
● The Contractor was reminded to provide maintenance to the excavator the prevent further visible smoke emission.
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.
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 12th Quarterly EM&A Report for the Contract which summaries findings of the EM&A works during the reporting period from 1 April 2018 to 30 June 2018.
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 April, May and June 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 AMS7B by the Environmental Team of Contract No. HY/2013/01 during the reporting period.
There was no Action and Limit Level exceedance for noise recorded at station NMS2 and station NMS3B by the Environmental Team of Contract No. HY/2013/01 during the reporting period.
During April 2018, a total of five Action Level exceedances of SS were recorded by the Environmental Team of Contract No. HY/2013/01 and were referred to this Contract for follow-up. The ET of this Contract conducted investigations and the findings with respect to the Contract can be referred to the corresponding monthly EM&A Report prepared under Contract No. HY/2013/01.
During May 2018, a total of four Action Level exceedances of water quality (consisting of two Action Level exceedances of turbidity and two Action Level exceedances of dissolved oxygen) were recorded by the Environmental Team of Contract No. HY/2013/01 and were referred to this Contract for follow-up. The ET of this Contract conducted investigations and the findings with respect to the Contract can be referred to the corresponding monthly EM&A Report prepared under Contract No. HY/2013/01.
During June 2018, a total of twenty-one exceedances of water quality (consisting of 18 Action Level and two Limit Level exceedances of dissolved oxygen, and one Action Level exceedance of turbidity) were recorded by the Environmental Team of Contract No. HY/2013/01 and were referred to this Contract for follow-up. The ET of this Contract conducted investigations and the findings with respect to the Contract can be referred to the corresponding monthly EM&A Report prepared under Contract No. HY/2013/01.
Furthermore, Limit Level exceedances of impact dolphin monitoring were recorded by the Environmental Team of Contract No. HY/2013/01 during the period of March 2018 to May 2018 and investigated by the ET of Contract No. HY/2013/01.
Impact dolphin monitoring results at all transects during the reporting period are reported in the monthly EM&A Reports (for April, May and June 2018) prepared for Contract No. HY/2013/01.
Environmental site inspection was carried out on 4, 11, 18 and 23 April, 2, 10, 14, 23 and 30 May and 6, 11, 20 and 27 June 2018. Recommendations on remedial actions were given to the Contractors for the deficiencies identified during the site inspections.
There was one new complaint received in relation to the environmental impact during the reporting period. The complaint was about discharge of muddy water from HKBCF. According to site photos provided by HyD, it is noticed that there was muddy water discharged via as-constructed box culverts/outfall structures at various parts of seawall on 13 June 2018. The complaint investigation by the ET of the Contract is ongoing and the findings will be presented in the next Quarterly EM&A report.
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