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 July 2017 to September 2017
October
2017
China State Construction Engineering (Hong Kong) Limited
Mott
MacDonald
20/F
AIA Kowloon Tower
Landmark
East
100
How Ming Street
Kwun
Tong
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 9th Quarterly EM&A Report for the Contract which summaries findings of the EM&A works during the reporting period from 1 July 2017 to 30 September 2017 (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).
With effect from 1 September 2017, the implementation of environmental monitoring for air quality, noise, water quality and marine ecology was continued by the Environmental Team of Contract No. HY/2013/01. For this Contract, the reporting of impact monitoring results and exceedances for 1-hr TSP level and 24-hr TSP level at station AM7, for noise at station NMS2 and station NMS3B, for water quality and for dolphin were also continued by the Environmental Team of Contract No. HY/2013/01 with effect from the same date.
Also, noise monitoring station NMS3B (Site Boundary of Site Office Area at Works Area WA2) was slightly relocated to AECOM PRE’s Office with effect from 1 September 2017.
The dates of site inspection during the reporting period are listed below:
● 5, 12, 17 and 26 July, 2, 9, 16, 21 and 31 August and 6, 13, 18 and 27 September 2017
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 AMS7 by the Environmental Team of Contract No. HY/2010/02 (in July and August 2017) and the Environmental Team of Contract No. HY/2013/01 (in September 2017) 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/2010/02 (in July and August 2017) and the Environmental Team of Contract No. HY/2013/01 (in September 2017) during the reporting period.
During July 2017, there were two Action Level exceedances for water quality recorded by the ET of Contract No. HY/2010/02 and were investigated by the ET of the Contract. After investigation, the exceedances were considered not related to the Contract. No follow-up action is required.
During August 2017, no water quality monitoring exceedances were recorded by the ET of Contract No. HY/2010/02.
During September 2017, a total of 150 Action Level exceedances and 28 Limit Level exceedances of water quality monitoring (comprising 137 Action Level exceedances and 26 Limit Level exceedances of DO, 5 Action Limit exceedances and 1 Limit Level exceedance of turbidity and 8 Action Limit exceedances and 1 Limit Level exceedance of SS) were recorded by the Environmental Team of Contract No. HY/2013/01 and were investigated by the ET of the Contract. It was concluded that the exceedances were not due to the Contract. No follow-up action is required.
Impact dolphin monitoring results at all transects during the reporting period are reported in the monthly EM&A Reports for July and August 2017 prepared for Contract No. HY/2010/02 and for September 2017 prepared for Contract No. HY/2013/01.
Complaint Log
There were no complaints received in relation to the environmental impact during the reporting period.
Notifications of Summons and Successful Prosecutions
There were no notifications of summons or prosecutions received during this reporting period.
Reporting Changes
With effect from 1 September 2017, the implementation of environmental monitoring for air quality, noise, water quality and marine ecology was continued by the Environmental Team of Contract No. HY/2013/01. For this Contract, the reporting of impact monitoring results and exceedances for 1-hr TSP level and 24-hr TSP level at station AM7, for noise at station NMS2 and station NMS3B, for water quality and for dolphin were also continued by the Environmental Team of Contract No. HY/2013/01 with effect from the same date.
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 9th Quarterly EM&A Report summarising the findings of EM&A activities conducted under the Contract from 1 July 2017 to 30 September 2017 (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 Environ 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 |
Eddie Tang |
9863 7686 |
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: Bay 15, 16 & 17 completed; Bay 14 Wall + Roof completed; Bay 18 and Bay 17A base slab completed
● Box Culvert C: Bay 4 wall + Roof completed
● Pier Column: 8 no. completed
● Segment Erection: 186 no. competed
● Segment Delivery: 206 pcs
● No generation of excavated marine sediment.
The EM&A programme was undertaken in accordance with the Updated EM&A Manual for HKBCF (Version 1.0).
With effect from 1 September 2017, the implementation of environmental monitoring for air quality, noise, water quality and marine ecology was continued by the Environmental Team of Contract No. HY/2013/01. For this Contract, the reporting of impact monitoring results and exceedances for 1-hr TSP level and 24-hr TSP level at station AM7, for noise at station NMS2 and station NMS3B, for water quality and for dolphin were also continued by the Environmental Team of Contract No. HY/2013/01 with effect from the same date.
Also, noise monitoring station NMS3B (Site Boundary of Site Office Area at Works Area WA2) was slightly relocated to AECOM PRE’s Office with effect from 1 September 2017.
It should be noted that the air quality and noise monitoring works for the Contract are covered by Contract No. HY/2010/02 “Hong Kong-Zhuhai-Macao Bridge HKBCF – Reclamation Works” (until 31 August 2017), Contract No. HY/2013/01 “Hong Kong-Zhuhai-Macao Bridge HKBCF – Passenger Clearance Building” (with effect from 1 September 2017) and Contract No. HY/2011/03 “Hong Kong-Zhuhai-Macao Bridge Hong Kong Link Road – Section between Scenic Hill and HKBCF”. The ET of the Contract or another ET of the HZMB project is required to conduct impact air quality monitoring at AMS6 and AMS7 and noise monitoring at NMS2 and NMS3B as part of EM&A programme if these monitoring stations are no longer covered under Contract Nos. HY/2013/01 and HY/2011/03. However, this is subject to ENPO’s final decision on which ET should carry out the monitoring work at these stations.
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(a) & (b), respectively.
Table 2.1: Construction Dust and Noise Monitoring Locations
Environmental Monitoring |
Identification No. |
Location Description |
Air Quality |
AMS6(1) |
Dragonair/CNAC
(Group) Building |
|
AMS7 (1) |
Hong Kong
SkyCity Marriot Hotel |
Noise |
NMS2(2) |
Seaview
Crescent |
|
NMS3B(2)
(3) (4) |
Site Boundary
of Site Office Area at Works Area WA2 (until Aug 2017) AECOM PRE’s
Office (with effect from 1 Sep 2017) |
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.
(4) Noise monitoring station NMS3B (Site Boundary of Site Office Area at Works Area WA2) was slightly relocated to AECOM PRE’s Office with effect from 1 September 2017.
The water quality monitoring works for the Contract are covered by Contract No. HY/2010/02 “Hong Kong-Zhuhai-Macao Bridge HKBCF – Reclamation Works” (until 31 August 2017) and Contract No. HY/2013/01 “Hong Kong-Zhuhai-Macao Bridge HKBCF – Passenger Clearance Building” (with effect from 1 September 2017). 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* |
Impact
Station (Close to HKBCF construction site) |
812577 |
820670 |
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 |
Sensitive receivers
(San Tau SSSI) |
810525 |
816456 |
SR4(N) |
Sensitive
receivers (Tai Ho) |
814705 |
817859 |
SR5* |
Sensitive
receivers (Artificial Reef in NE Airport) |
811489 |
820455 |
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 |
Sensitive
receivers (Ma Wan FCZ) 1 |
823741 |
823495 |
SR10B(N) |
Sensitive
receivers (Ma Wan FCZ) 2 |
823683 |
823187 |
CS(Mf)3* |
Control
Station |
809989 |
821117 |
CS(Mf)3(N)# |
Control Station |
808814 |
822355 |
CS(Mf)5 |
Control
Station |
817990 |
821129 |
CS4 |
Control
Station |
810025 |
824004 |
CS6 |
Control
Station |
817028 |
823992 |
Remark: On 15 May 2017, IEC/ENPO notified ET of changes to the EM&A Programme regarding some water quality monitoring stations being conducted by Contract No. HY/2010/02. These changes were certified by the ETL of Contract No. HY/2010/02 and verified by the IEC on 24 March 2017, and approved by EPD on 12 May 2017. Three monitoring stations, namely IS10, SR5 and CS(Mf)3 (marked *), were replaced by IS10(N), SR5(N) and CS(Mf)3(N) respectively (marked #, shown in red bold font).
The dolphin monitoring works for the Contract are covered by Contract No. HY/2010/02 “Hong Kong-Zhuhai-Macao Bridge HKBCF – Reclamation Works” (until 31 August 2017) and Contract No. HY/2013/01 “Hong Kong-Zhuhai-Macao Bridge HKBCF – Passenger Clearance Building” (with effect from 1 September 2017). 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/2010/02 (up to August 2017), HY/2013/01 (from September 2017 onwards) 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 |
AMS7 – Hong
Kong SkyCity Marriot Hotel |
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 |
AMS7 – Hong
Kong SkyCity Marriot Hotel |
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 AMS7 in July and August 2017 are reported in the monthly EM&A Reports (for July and August 2017) prepared for Contract Nos. HY/2011/03 and HY/2010/02 respectively. The monitoring results for AMS6 and AMS7 in September 2017 are reported in the monthly EM&A Reports (for September 2017) 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 July, August and September 2017) prepared by Contract No. HY/2011/03.
There was no Action and Limit Level exceedance of 1-hr TSP level and 24-hr TSP level recorded at station AMS7 by the Environmental Team of Contract No. HY/2010/02 (in July and August 2017) and the Environmental Team of Contract No. HY/2013/01 (in September 2017) during the reporting period.
The monitoring results for NMS2 and NMS3B in July and August 2017 are reported in the monthly EM&A Reports (for July and August 2017) prepared for Contract No. HY/2010/02. The monitoring results for NMS2 and NMS3B in September 2017 are reported in the monthly EM&A Reports (for September 2017) prepared for Contract No. HY/2013/01.
No noise exceedances were recorded at stations NMS2 and NMS3B by the ET of Contract No. HY/2010/02 (in July and August 2017) and the ET of Contract No. HY/2013/01 (in September 2017) during the reporting period.
The monitoring results for the twenty-one monitoring stations in July and August 2017 are reported in the monthly EM&A Reports (for July and August 2017) prepared for Contract No. HY/2010/02. The monitoring results for these stations in September 2017 are reported in the monthly EM&A Report (for September 2017) prepared for Contract No. HY/2013/01.
During July 2017, there were two Action Level exceedances for water quality recorded by the ET of Contract No. HY/2010/02 and were investigated by the ET of the Contract. After investigation, the exceedances were considered not related to the Contract. No follow-up action is required.
During August 2017, no water quality monitoring exceedances were recorded by the ET of Contract No. HY/2010/02.
During September 2017, a total of 150 Action Level exceedances and 28 Limit Level exceedances of water quality monitoring (comprising 137 Action Level exceedances and 26 Limit Level exceedances of DO, 5 Action Limit exceedances and 1 Limit Level exceedance of turbidity and 8 Action Limit exceedances and 1 Limit Level exceedance of SS) were recorded by the Environmental Team of Contract No. HY/2013/01 and were investigated by the ET of the Contract. It was concluded that the exceedances were not due to the Contract. No follow-up action is required.
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 |
12 Jul 2017 |
SS (mg/L) |
SR3 |
Depth Average |
Action Level |
- |
14 Jul 2017 |
SS (mg/L) |
IS7 |
Depth Average |
- |
Action Level |
1 Sep 2017 |
DO (mg/L) |
IS5 |
Bottom |
Action Level |
Action Level |
|
|
IS10(N) |
Bottom |
Action Level |
Action Level |
|
|
IS(Mf)11 |
Bottom |
Action Level |
Action Level |
|
|
IS17 |
Bottom |
Action Level |
- |
|
|
SR5(N) |
Bottom |
Action Level |
- |
6 Sep 2017 |
DO (mg/L) |
IS17 |
Bottom |
Action Level |
- |
|
|
SR6 |
Surface and Middle |
- |
Action Level |
|
|
SR10A |
Surface and Middle |
Limit Level |
Limit Level |
|
|
SR10A |
Bottom |
- |
Action Level |
|
|
SR10B(N) |
Surface and Middle |
Limit Level |
Limit Level |
|
|
SR10B(N) |
Bottom |
- |
Action Level |
|
Turbidity (NTU) |
IS(Mf)11 |
Depth Average |
- |
Action Level |
|
SS (mg/L) |
IS8 |
Depth Average |
- |
Action Level |
|
|
SR4(N) |
Depth Average |
- |
Action Level |
|
|
SR6 |
Depth average |
- |
Action Level |
8 Sep 2017 |
DO (mg/L) |
IS5 |
Surface and Middle |
- |
Action Level |
|
|
IS7 |
Surface and Middle |
Action Level |
- |
|
|
IS7 |
Bottom |
Action Level |
- |
|
|
IS8 |
Surface and Middle |
- |
Action Level |
|
|
IS(Mf)9 |
Surface and Middle |
- |
Action Level |
|
|
IS10(N) |
Surface and Middle |
Action Level |
Action Level |
|
|
IS(Mf)11 |
Surface and Middle |
- |
Action Level |
|
|
IS(Mf)11 |
Bottom |
- |
Action Level |
|
|
IS(Mf)16 |
Surface and Middle |
Action Level |
Action Level |
|
|
IS(Mf)16 |
Bottom |
Action Level |
- |
|
|
IS17 |
Surface and Middle |
Action Level |
Action Level |
|
|
IS17 |
Bottom |
Action Level |
Action Level |
|
|
SR3 |
Surface and Middle |
Action Level |
Action Level |
|
|
SR4(N) |
Surface and Middle |
- |
Action Level |
|
|
SR5(N) |
Surface and Middle |
- |
Action Level |
|
|
SR6 |
Surface and Middle |
Action Level |
Action Level |
|
|
SR7 |
Surface and Middle |
- |
Action Level |
|
|
SR10A |
Surface and Middle |
Limit Level |
Limit Level |
|
|
SR10A |
Bottom |
- |
Action Level |
|
|
SR10B(N) |
Surface and Middle |
Limit Level |
Limit Level |
|
Turbidity (NTU) |
IS5 |
Depth Average |
Action Level |
- |
|
|
IS10(N) |
Depth Average |
- |
Action Level |
|
|
IS(Mf)11 |
Depth Average |
- |
Action Level |
|
|
SR6 |
Depth Average |
- |
Action Level |
|
SS (mg/L) |
IS5 |
Depth Average |
Action Level |
- |
|
|
IS10(N) |
Depth Average |
- |
Limit Level |
|
|
IS(Mf)11 |
Depth Average |
- |
Action Level |
11 Sep 2017 |
DO (mg/L) |
IS8 |
Surface and Middle |
- |
Action Level |
|
|
IS8 |
Bottom |
- |
Action Level |
|
|
IS(Mf)9 |
Surface and Middle |
- |
Action Level |
|
|
IS10(N) |
Surface and Middle |
Action Level |
Action Level |
|
|
IS10(N) |
Bottom |
- |
Action Level |
|
|
IS(Mf)11 |
Surface and Middle |
Action Level |
Action Level |
|
|
IS(Mf)11 |
Bottom |
Action Level |
Action Level |
|
|
IS(Mf)16 |
Surface and Middle |
- |
Action Level |
|
|
IS(Mf)16 |
Bottom |
Action Level |
Action Level |
|
|
IS(Mf)17 |
Surface and Middle |
Action Level |
Action Level |
|
|
IS(Mf)17 |
Bottom |
Action Level |
Action Level |
|
|
SR4(N) |
Surface and Middle |
- |
Action Level |
|
|
SR5(N) |
Surface and Middle |
Action Level |
Action Level |
|
|
SR5(N) |
Bottom |
Action Level |
Action Level |
|
|
SR6 |
Surface and Middle |
Action Level |
Action Level |
|
|
SR6 |
Bottom |
- |
Action Level |
|
|
SR7 |
Surface and Middle |
Action Level |
Action Level |
|
|
SR10A |
Surface and Middle |
- |
Limit Level |
|
|
SR10A |
Bottom |
- |
Action Level |
|
|
SR10B(N) |
Surface and Middle |
Limit Level |
Limit Level |
|
|
SR10B(N) |
Bottom |
Action Level |
Action Level |
13 Sep 2017 |
DO (mg/L) |
IS5 |
Bottom |
Action Level |
Action Level |
|
|
IS(Mf)9 |
Bottom |
- |
Action Level |
|
|
IS10(N) |
Surface and Middle |
Action Level |
- |
|
|
IS(Mf)11 |
Surface and Middle |
- |
Action Level |
|
|
IS(Mf)16 |
Bottom |
Action Level |
Action Level |
|
|
IS17 |
Surface and Middle |
- |
Action Level |
|
|
IS17 |
Bottom |
Action Level |
Action Level |
|
|
SR5(N) |
Surface and Middle |
Action Level |
- |
|
|
SR10A |
Surface and Middle |
Limit Level |
Limit Level |
|
|
SR10A |
Bottom |
- |
Action Level |
|
|
SR10B(N) |
Surface and Middle |
- |
Limit Level |
|
|
SR10B(N) |
Bottom |
- |
Action Level |
15 Sep 2017 |
DO (mg/L) |
IS10(N) |
Bottom |
Action Level |
Action Level |
|
|
IS(Mf)11 |
Surface and Middle |
Action Level |
Action Level |
|
|
IS17 |
Surface and Middle |
Action Level |
- |
|
|
IS17 |
Bottom |
Action Level |
- |
|
|
SR6 |
Surface and Middle |
- |
Action Level |
|
|
SR6 |
Bottom |
- |
Action Level |
|
|
SR10A |
Surface and Middle |
- |
Limit Level |
|
|
SR10A |
Bottom |
- |
Action Level |
|
|
SR10B(N) |
Surface and Middle |
- |
Limit Level |
|
|
SR10B(N) |
Bottom |
- |
Action Level |
|
Turbidity (NTU) |
IS8 |
Depth Average |
- |
Limit Level |
18 Sep 2017 |
DO (mg/L) |
IS5 |
Bottom |
Action Level |
- |
|
|
IS10(N) |
Bottom |
Action Level |
- |
|
|
IS(Mf)11 |
Bottom |
Action Level |
- |
|
|
IS(Mf)16 |
Bottom |
Action Level |
- |
|
|
SR6 |
Surface and Middle |
Action Level |
Action Level |
|
|
SR6 |
Bottom |
Action Level |
Action Level |
|
|
SR10A |
Surface and Middle |
- |
Limit Level |
|
|
SR10B(N) |
Surface and Middle |
- |
Limit Level |
|
SS (mg/L) |
IS8 |
Depth Average |
- |
Action Level |
20 Sep 2017 |
DO (mg/L) |
SR6 |
Surface and Middle |
- |
Action Level |
|
|
SR6 |
Bottom |
- |
Action Level |
|
|
SR10A |
Surface and Middle |
- |
Limit Level |
|
|
SR10A |
Bottom |
- |
Action Level |
|
|
SR10B(N) |
Surface and Middle |
- |
Limit Level |
|
SS (mg/L) |
SR6 |
Depth Average |
- |
Action Level |
22 Sep 2017 |
DO (mg/L) |
IS8 |
Surface and Middle |
- |
Action Level |
|
|
IS(Mf)9 |
Surface and Middle |
- |
Action Level |
|
|
IS10(N) |
Surface and Middle |
Action Level |
Action Level |
|
|
IS10(N) |
Bottom |
Action Level |
- |
|
|
IS(Mf)11 |
Surface and Middle |
Action Level |
Action Level |
|
|
IS(Mf)16 |
Surface and Middle |
- |
Action Level |
|
|
IS17 |
Surface and Middle |
- |
Action Level |
|
|
SR3 |
Surface and Middle |
Action Level |
- |
|
|
SR4(N) |
Surface and Middle |
- |
Action Level |
|
|
SR5(N) |
Surface and Middle |
Action Level |
Action Level |
|
|
SR6 |
Surface and Middle |
Action Level |
Action Level |
|
|
SR7 |
Surface and Middle |
- |
Action Level |
|
|
SR10A |
Surface and Middle |
Limit Level |
Limit Level |
|
|
SR10B(N) |
Surface and Middle |
Limit Level |
Limit Level |
|
|
SR10B(N) |
Bottom |
- |
Action Level |
25 Sep
2017 |
DO (mg/L) |
SR10B(N) |
Surface and Middle |
- |
Limit Level |
|
|
SR10B(N) |
Bottom |
- |
Action Level |
|
SS (mg/L) |
IS8 |
Depth Average |
- |
Action Level |
27 Sep
2017 |
DO (mg/L) |
IS10(N) |
Bottom |
Action Level |
- |
|
|
IS17 |
Bottom |
Action Level |
- |
|
|
SR5(N) |
Bottom |
Action Level |
- |
|
|
SR10A |
Bottom |
- |
Action Level |
|
|
SR10B(N) |
Surface and Middle |
- |
Limit Level |
|
|
SR10B(N) |
Bottom |
Action Level |
Action Level |
29 Sep
2017 |
DO (mg/L) |
IS5 |
Bottom |
- |
Action Level |
|
|
IS7 |
Bottom |
Action Level |
- |
|
|
IS8 |
Bottom |
Action Level |
- |
|
|
IS10(N) |
Surface and Middle |
Action Level |
- |
|
|
IS10(N) |
Bottom |
Action Level |
Action Level |
|
|
IS(Mf)11 |
Bottom |
Action Level |
Action Level |
|
|
IS(Mf)16 |
Bottom |
Action Level |
- |
|
|
IS17 |
Bottom |
- |
Action Level |
|
|
SR5(N) |
Bottom |
Action Level |
Action Level |
|
|
SR10B(N) |
Bottom |
Action Level |
- |
The details of water quality exceedances can be made reference to the monthly EM&A reports for July and August 2017 under Contract No. HY/2010/02 and for September 2017 under Contract No. HY/2013/01.
Investigations into these exceedances were conducted and the findings are summarised below.
12 July 2017
According to the Contractor of HY/2013/04, no marine-based works and no marine-based transportation were conducted under the contract on 12 July 2017. Furthermore, no discharge originating from any HY/2013/04 site works on 12 July 2017 was identified.
It was concluded that the exceedance was not related to HY/2013/04.
14 July 2017
According to the Contractor of HY/2013/04, no marine-based works and no marine-based transportation were conducted under the contract on 14 July 2017. Furthermore, no discharge originating from any HY/2013/04 site works on 14 July 2017 was identified.
It was concluded that the exceedance was not related to HY/2013/04.
1, 6, 8, 11, 13, 15, 18, 20 and 27 September 2017
According to the Contractor of HY/2013/04, no marine-based works and no marine-based transportation were conducted under the contract on 1, 6, 8, 11, 13, 15, 18, 20 and 27 September 2017. Furthermore, no discharge originating from any HY/2013/04 site works on 1, 6, 8, 11, 13, 15, 18, 20 and 27 September 2017 was identified.
During ET’s regular weekly site inspections on 31 August and 6, 13, 18 and 27 September HY/2013/04 site shoreline interfacing with open waters was inspected and there were no observations referring to water quality mitigation measures associated with that shoreline.
It was concluded that the exceedances on 1, 6, 8, 11, 13, 15, 18, 20 and 27 September 2017 were not due to HY/2013/04.
22 September 2017
According to the Contractor of HY/2013/04, no marine-based works were conducted under the contract on 22 September 2017. Furthermore, no discharge originating from any HY/2013/04 site works on 22 September 2017 was identified.
Marine-based segment delivery under the contract was conducted on the evening of 21 September 2017 to the early morning of 22 September 2017, with the barge vessel arriving at HY/2013/04 loading/unloading point at 01:36 (a.m.) on 22 September 2017. No other marine transportation was conducted under the contract on 22 September 2017.
Given that the sampling times where exceedances were recorded were at least several hours after the abovementioned segment delivery, it is considered unlikely that the exceedances recorded could be attributed to this activity. Also, some exceedance locations, e.g. SR3, SR6, SR10A and SR10B(N), were located well away from the segment delivery route.
According to the Contractor, after finishing the unloading operation, the vessel for segment delivery departed from the loading/unloading point at 16:00 on the same day. Since samplings showing exceedances were obtained before this time, it is unlikely that they could be attributed to this activity.
During ET’s regular weekly site inspections on 18 and 27 September 2017, HY/2013/04 site shoreline interfacing with open waters was inspected and there were no observations referring to water quality mitigation measures associated with that shoreline.
It was concluded that the exceedances were not due to HY/2013/04.
25 September 2017
According to the Contractor of HY/2013/04, no marine-based works were conducted under the contract on 25 September 2017. Furthermore, no discharge originating from any HY/2013/04 site works on 25 September 2017 was identified.
Marine-based segment delivery was conducted on the evening of 24 September 2017 to the early morning of 25 September 2017, with the barge vessel arriving at HY/2013/04 loading/unloading point at 01:37 (a.m.) on 25 September 2017. No other marine transportation was conducted under the contract on 25 September 2017.
Given that the sampling times where exceedances were recorded were at least several hours after the abovementioned segment delivery, it is considered unlikely that the exceedances recorded could be attributed to this activity. Also, one exceedance location, i.e. SR10B(N), was located well away from the segment delivery route.
According to the Contractor, after finishing the unloading operation, the vessel for segment delivery departed from the loading/unloading point at 16:00 on the same day. Since samplings showing exceedances were obtained before this time, it is unlikely that they could be attributed to this activity.
While SS exceedance was recorded at IS8, no exceedance was recorded at IS(Mf)9 which is the nearest monitoring location to HY/2013/04 loading and unloading point and the shoreline interfacing with open waters.
During ET’s regular weekly site inspections on 18 and 25 September 2017, HY/2013/04 site shoreline interfacing with open waters was inspected and there were no observations referring to water quality mitigation measures associated with that shoreline.
It was concluded that the exceedances were not due to HY/2013/04.
29 September 2017
According to the Contractor of HY/2013/04, no marine-based works were conducted under the contract on 29 September 2017. Furthermore, no discharge originating from any HY/2013/04 site works on 29 September 2017 was identified.
Marine-based segment delivery under the contract was conducted on the evening of 28 September 2017 to the early morning of 29 September 2017, with the barge vessel arriving at HY/2013/04 loading/unloading point at 01:32 (a.m.) on 29 September 2017. No other marine transportation was conducted under the contract on 29 September 2017.
Given that the sampling times where exceedances were recorded were at least several hours after the abovementioned segment delivery, it is considered unlikely that the exceedances recorded could be attributed to this activity. Also, some exceedance locations, e.g. IS5 and SR10B(N), were located well away from the segment delivery route.
According to the Contractor, after finishing the unloading operation, the vessel for segment delivery departed from the loading/unloading point at 16:00 on the same day. Except at IS17, samplings showing exceedances were obtained before this time, it is unlikely that they could be attributed to this activity. The sampling at IS17 showing exceedance was obtained at 16:05, however given its location (near the north-east corner of HKBCF island), it is unlikely that the vessel could have reached IS17 in such short time, therefore it is also unlikely that this could have caused that exceedance.
It is also noted that no exceedance was recorded at IS(Mf)9 which is the nearest monitoring location to HY/2013/04 loading and unloading point and the shoreline interfacing with open waters.
During ET’s regular weekly site inspections on 27 September and 6 October 2017, HY/2013/04 site shoreline interfacing with open waters was inspected and there were no observations referring to water quality mitigation measures associated with that shoreline.
It was concluded that the exceedances were not due to HY/2013/04.
The monitoring results for dolphin monitoring during the reporting periods are reported in the monthly EM&A Reports for July and August 2017 prepared for Contract No. HY/2010/02 and for September 2017 prepared for 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) was checked by ET. Training of marine travel route for marine vessel operator was given to relevant staff and relevant records were kept properly. Marine traffic records which indicated the number of trips data for crane barge, flat top barge and tug boat on the implementation of RMTRP for June 2017, July 2017 and August 2017 were checked by ET within the reporting period. Marine traffic records of June 2017, July 2017 and August 2017 were provided by Contractor to ER, ETL and IEC/ENPO for checking within the months of July 2017, August 2017 and September 2017 respectively. The checking of marine traffic records of September 2017 will be reported in the next Quarterly EM&A Report. The implementation of marine traffic follows the Regular Marine Travel Route Plan with respect to ET’s checking on the marine traffic records for the reporting period.
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 3.2):
Table 3.2: 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 |
Up to end June
2017 |
3,570 |
39,814 |
July 2017 |
0 |
0 |
August 2017 |
0 |
0 |
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 July, August and September 2017) prepared by Contract No. HY/2011/03.
There was no Action and Limit Level exceedance of 1-hr TSP level and 24-hr TSP level recorded at station AMS7 by the Environmental Team of Contract No. HY/2010/02 (in July and August 2017) and the Environmental Team of Contract No. HY/2013/01 (in September 2017) 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/2010/02 (in July and August 2017) and the ET of Contract No. HY/2013/01 (in September 2017) during the reporting period.
During August 2017, no water quality monitoring exceedances were recorded by the ET of Contract No. HY/2010/02.
During September 2017, a total of 150 Action Level exceedances and 28 Limit Level exceedances of water quality monitoring (comprising 137 Action Level exceedances and 26 Limit Level exceedances of DO, 5 Action Limit exceedances and 1 Limit Level exceedance of turbidity and 8 Action Limit exceedances and 1 Limit Level exceedance of SS) were recorded by the Environmental Team of Contract No. HY/2013/01 and were investigated by the ET of the Contract. It was concluded that the exceedances were not due to the Contract. No follow-up action is required. The details of water quality exceedances in this month can be referred to in the Monthly EM&A Report under 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 July and August 2017 prepared for Contract No. HY/2010/02 and for September 2017 prepared for Contract No. HY/2013/01.
There were no complaints received in relation to the environmental impact during the reporting period. The details of cumulative statistics of Environmental Complaints are provided in Appendix H.
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 improve the site housekeeping.
● The Contractor was reminded to provide the suitable drip trays for chemical containers.
● The Contractor was reminded to provide the necessary NRMM label for a generator, a chemical container.
● The Contractor was reminded to replace the faded-out colour / not clearly shown NRMM label with a new one.
● The Contractor was reminded to clear the general refuse.
● The Contractor was reminded to provide watering of haul roads at the required frequency (at least 8 times per day).
● The Contractor was reminded to properly dispose of the general refuse.
● The Contractor was reminded to clear the drip tray or remove the oil containers as soon as possible.
● The Contractor was reminded to clear the stagnant water and general refuse.
● The Contractor was reminded to provide NRMM labels for all excavators on site.
● The Contractor was reminded to provide drip tray with sufficient storage capacity.
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 ensure 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 9th Quarterly EM&A Report summarising the findings of EM&A activities conducted under the Contract from 1 July 2017 to 30 September 2017.
With effect from 1 September 2017, the implementation of environmental monitoring for air quality, noise, water quality and marine ecology was continued by the Environmental Team of Contract No. HY/2013/01. For this Contract, the reporting of impact monitoring results and exceedances for 1-hr TSP level and 24-hr TSP level at station AM7, for noise at station NMS2 and station NMS3B, for water quality and for dolphin were also continued by the Environmental Team of Contract No. HY/2013/01 with effect from the same date.
Also, noise monitoring station NMS3B (Site Boundary of Site Office Area at Works Area WA2) was slightly relocated to AECOM PRE’s Office with effect from 1 September 2017.
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 July, August and September 2017) prepared by Contract No. HY/2011/03.
There was no Action and Limit Level exceedance of 1-hr TSP level and 24-hr TSP level recorded at station AMS7 by the Environmental Team of Contract No. HY/2010/02 (in July and August 2017) and the Environmental Team of Contract No. HY/2013/01 (in September 2017) 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/2010/02 (in July and August 2017) and the Environmental Team of Contract No. HY/2013/01 (in September 2017) during the reporting period.
During July 2017, there were two Action Level exceedances for water quality recorded by the ET of Contract No. HY/2010/02 and were investigated by the ET of the Contract. After investigation, the exceedances were considered not related to the Contract. No follow-up action is required.
During August 2017, no water quality monitoring exceedances were recorded by the ET of Contract No. HY/2010/02.
During September 2017, a total of 150 Action Level exceedances and 28 Limit Level exceedances of water quality monitoring (comprising 137 Action Level exceedances and 26 Limit Level exceedances of DO, 5 Action Limit exceedances and 1 Limit Level exceedance of turbidity and 8 Action Limit exceedances and 1 Limit Level exceedance of SS) were recorded by the Environmental Team of Contract No. HY/2013/01 and were investigated by the ET of the Contract. It was concluded that the exceedances were not due to the Contract. No follow-up action is required.
Impact dolphin monitoring results at all transects during the reporting period are reported in the monthly EM&A Reports for July and August 2017 prepared for Contract No. HY/2010/02 and for September 2017 prepared for Contract No. HY/2013/01.
Environmental site inspection was carried out on 5, 12, 17 and 26 July, 2, 9, 16, 21 and 31 August and 6, 13, 18 and 27 September 2017. Recommendations on remedial actions were given to the Contractors for the deficiencies identified during the site inspections.
There were no complaints received in relation to the environmental impact during the reporting period. 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