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 January 2018 to March 2018
April
2018
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 11th Quarterly EM&A Report for the Contract which summaries findings of the EM&A works during the reporting period from 1 January 2018 to 31 March 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 AMS7/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:
● 3, 10, 15, 24 and 31 January, 9, 12, 22 and 28 February and 7, 14, 19 and 28 March 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 AMS7/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 January 2018, a total of three Action Level exceedances, consisting of one Action Level exceedance of SS for water quality and two Action Level exceedances of 24-hour TSP for air quality, were recorded by the Environmental Team of Contract No. HY/2013/01 during the reporting period and investigated by the ET of the Contract.
During February 2018, a total of two Action Level exceedances of SS were recorded by the Environmental Team of Contract No. HY/2013/01 during the reporting period and investigated by the ET of the Contract.
During March 2018, a total of four Action Level exceedances of SS were recorded by the Environmental Team of Contract No. HY/2013/01 during the reporting period 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 December 2017 to February 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 |
008 |
ENPO-C0134 |
10 March 2018 |
Air Quality and Water Quality |
The complaint was investigated by the ET of the Contract and the findings are presented in this report.
In addition, the investigation of the complaint received on 29 December 2017 by the ET of the Contract was carried over from the previous reporting period and completed during this reporting period, and the findings are also presented in this report.
Notifications of Summons and Successful Prosecutions
There were no notifications of summons or prosecutions received during this reporting period.
Reporting Changes
Air quality monitoring station AMS7 (Hong Kong SkyCity Marriott Hotel) was relocated to AMS7B (3RS Site Offices) with effect from 6 February 2018. A proposal for re-location of air quality monitoring station AMS7 was justified by the ET Leader for Contract No. HY/2013/01 on 22 January 2018, verified by the IEC on 24 January 2018 and submitted to EPD on 30 January 2018, and the air quality monitoring has been carrying out at the alternative air quality monitoring station AMS7B with EPD's consent since 6 February 2018.
The same baseline and Action/Limit Levels for air quality, as derived from the baseline monitoring data recorded at AMS7, apply with the abovementioned relocation to AMS7B.
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 11th Quarterly EM&A Report summarising the findings of EM&A activities conducted under the Contract from 1 January 2018 to 31 March 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
● Segment Erection: 203 no. completed
● Segment Delivery: delivery completed on 20 January 2018 (all segments stored at segment storage yard on HKBCF island site)
● Depressed road: whole structure completed
● 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). 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”.
Air quality monitoring station AMS7 (Hong Kong SkyCity Marriott Hotel) was relocated to AMS7B (3RS Site Offices) with effect from 6 February 2018. A proposal for re-location of air quality monitoring station AMS7 was justified by the ET Leader for Contract No. HY/2013/01 on 22 January 2018, verified by the IEC on 24 January 2018 and submitted to EPD on 30 January 2018, and the air quality monitoring has been carrying out at the alternative air quality monitoring station AMS7B with EPD's consent since 6 February 2018.
The ET of the Contract or another ET of the HZMB project is required to conduct impact air quality monitoring at AMS6 and AMS7/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 |
|
AMS7(1)(2) |
Hong Kong
SkyCity Marriot Hotel |
|
AMS7B(2) |
3RS Site
Offices |
Noise |
NMS2(3) |
Seaview
Crescent |
|
NMS3B(3)(4)
|
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) Air quality monitoring station AMS7 (Hong Kong SkyCity Marriott Hotel) was relocated to AMS7B (3RS Site Offices) with effect from 6 February 2018. A proposal for re-location of air quality monitoring station AMS7 was justified by the ET Leader for Contract No. HY/2013/01 on 22 January 2018, verified by the IEC on 24 January 2018 and submitted to EPD on 30 January 2018, and the air quality monitoring has been carrying out at the alternative air quality monitoring station AMS7B with EPD's consent since 6 February 2018.
(3) The ET of this Contract should conduct impact noise monitoring at the NMS listed in the table as part of EM&A programme according to the latest notification from ENPO when the monitoring station(s) is/are no longer covered by another ET of the HZMB project.
(4) The Action and Limit Levels for schools will be applied for this alternative monitoring location.
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 |
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 |
AMS7 – Hong
Kong SkyCity Marriot Hotel / 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 |
AMS7 – Hong
Kong SkyCity Marriot Hotel / 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 AMS7/AMS7B are reported in the monthly EM&A Reports (for January, February and March 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 January, February and March 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 AMS7/AMS7B by the Environmental Team of Contract No. HY/2013/01 during the reporting period.
Two Action Level exceedances of 24-hour TSP level were recorded at stations AMS2 and AMS3B by the Environmental Team of Contract No. HY/2013/01 during the reporting period and investigated by the ET of the Contract.
Air quality exceedances recorded during the reporting period are summarised in Table 3.1.
Table 3.1: Action and Limit Level Exceedance for Air Quality
Date |
Parameter |
Station |
Exceedance Recorded |
17 Jan 2018 |
24-hour TSP |
AMS2 |
Action Level |
17 Jan 2018 |
24-hour TSP |
AMS3B |
Action Level |
The details of the air quality exceedances can be referred to in the Monthly EM&A reports under Contract No. HY/2013/01.
Investigations into the exceedances were conducted and the findings are summarised below.
17 January 2018 (at AMS2 and AMS3B)
According to the Contractor of HY/2013/04, the major construction activities conducted under the Contract during the monitoring period included bridge segment delivery and erection, and construction of Box Culvert D.
As informed by the Contractor of HY/2013/04, watering of all main haul roads was provided in accordance with the HY/2013/04 site watering plan. This plan schedules water spraying for at least 8 times per day which follows the recommended mitigation measures in the EM&A Manual and Environmental Permit.
During ET’s regular weekly site inspection on 15 January 2018 (between 14:00 and 15:00), one air quality observation regarding a dry haul road at Bridge D1 was made; subsequently the Contractor provided water spray for this location and the observation was closed. The remaining haul roads were observed to be watered and no fugitive dust generation from HY/2013/04 works was observed during this inspection.
During the next ET regular weekly site inspection on 24 January 2018 (between 14:00 and 15:00), there was no air quality observation associated with watering of site areas.
Photos relating to the site inspections on 15 January 2018 and 24 January 2018 are presented in ET’s investigation report.
The wind data collected at the AMS3B wind station at Works Area WA2 during the monitoring period on 17 and 18 January 2018 shows that winds were still (averaged wind speed 0 m/s) during the monitoring period. This indicates that it was unlikely that the source of exceedances could be attributed to HY/2013/04.
Information available on EPD’s Air Quality Health Index (AQHI) website shows that the short-term health risk of air pollution between 08:00 a.m. on 17 January 2018 and 08:00 a.m. on 18 January 2018 was low to serious in Tung Chung (with maximum AQHI of 10+ at 13:00-19:00 on 17 January 2018). This, combined with the still winds recorded at the wind station, indicate that the background air pollution was relatively high during part of the monitoring period and may have contributed to the high level of TSP recorded. The AQHI data is available online at http://www.aqhi.gov.hk/epd/ddata/html/history/2018/201801_Eng.csv.
It was concluded that the exceedances were not due to HY/2013/04.
The monitoring results for NMS2 and NMS3B are reported in the monthly EM&A Reports (for January, February and March 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 January, February and March 2018) prepared for Contract No. HY/2013/01.
During January 2018, one Action Level exceedance of SS was recorded by the Environmental Team of Contract No. HY/2013/01 during the reporting period and investigated by the ET of the Contract.
During February 2018, two Action Level exceedances of SS were recorded by the Environmental Team of Contract No. HY/2013/01 during the reporting period and investigated by the ET of the Contract.
During March 2018, four Action Level exceedances of SS were recorded by the Environmental Team of Contract No. HY/2013/01 during the reporting period and were referred to this Contract for follow-up. The ET of this Contract conducted investigations.
Water quality exceedances recorded during the reporting period are summarised in Table 3.2.
Table 3.2: 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 |
31 Jan 2018 |
SS |
SR6 |
Depth Average |
Action Level |
- |
2 Feb
2018 |
SS |
SR6 |
Depth
Average |
- |
Action
Level |
|
|
SR7 |
Depth
Average |
- |
Action
Level |
2 Mar
2018 |
SS |
SR6 |
Depth
Average |
- |
Action
Level |
16 Mar
2018 |
SS |
SR5(N) |
Depth
Average |
- |
Action
Level |
21 Mar
2018 |
SS |
IS7 |
Depth
Average |
- |
Action
Level |
30 Mar
2018 |
SS |
SR5(N) |
Depth
Average |
- |
Action
Level |
The details of water quality exceedances can be made reference to the monthly EM&A reports under Contract No. HY/2013/01.
Investigations into these exceedances were conducted by the ET of this Contract. The findings for exceedances on 31 January 2018 and 2 February 2018 are summarised below, while the findings for exceedances on 2, 16, 21 and 30 March 2018 with respect to the Contract can be referred to the corresponding monthly EM&A Report prepared under Contract No. HY/2013/01. .
31 January 2018
According to the Contractor of HY/2013/04, all marine-based segment deliveries were completed in December 2017 and no marine-based works were conducted under the contract on 31 January 2018. Furthermore, no discharge originating from any HY/2013/04 site works on 31 January 2018 was identified.
While SS exceedance was recorded at SR6¸ 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 inspection on 31 January 2018, HY/2013/04 site shoreline interfacing with open waters was inspected between 14:25 and 15:00 (i.e. shortly after the recorded exceedance at SR6 during mid-ebb tide). There were no observations referring to water quality mitigation measures associated with that shoreline.
It was concluded that the exceedance was not due to HY/2013/04.
2 February 2018
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 on 2 February 2018. Furthermore, no discharge originating from any HY/2013/04 site works on 2 February 2018 was identified.
While SS exceedance was recorded at SR6 and SR7¸ 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 inspection on 31 January 2018, HY/2013/04 site shoreline interfacing with open waters was inspected between 14:25 and 15:00. There were no observations referring to water quality mitigation measures associated with that shoreline.
During ET’s subsequent regular weekly site inspection on 9 February 2018, HY/2013/04 site shoreline interfacing with open waters was inspected between 14:25 and 14:50. There were no observations referring to water quality mitigation measures associated with that shoreline.
It was concluded that the exceedance was 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 January, February and March 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 December 2017 to February 2018 and investigated by the ET of Contract No. HY/2013/01.
Dolphin monitoring exceedances recorded are summarised in Table 3.3.
Table 3.3: Action and Limit Level Exceedance for Dolphin Monitoring
Period |
Parameter |
Area |
Exceedance Recorded |
Dec 2017 –
Feb 2018 |
Ecology
(Chinese White Dolphin Monitoring) |
Northeast Lantau (NEL) |
Limit Level |
Dec 2017 –
Feb 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) 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 December 2017 and January 2018 were checked by ET within the reporting period. Marine traffic records of December 2017 and January 2018 were provided by Contractor to ER, ETL and IEC/ENPO for checking within the months of January 2018 and March 2018 respectively. 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.
According to the Contractor of HY/2013/04, all marine-based segment deliveries were completed in January 2018 and no marine-based works were conducted under the contract during the reporting period.
Implementation status of the Dolphin Watching Plan (DWP) was checked by ET. Training of marine mammal observer (MMO) was given to relevant staff and relevant records were kept properly. Silt curtains were provided at each box culvert for marine works areas in accordance with the approved Dolphin Watching Plan. The silt curtains were inspected regularly by ET and Contractor and the implementation was found to be in working order.
The Contractor registered as a chemical waste producer for the Contract. Sufficient numbers of receptacles were available for general refuse collection and sorting. As a practical means, the disposal operation is managed by a single HKBCF contractor who is also responsible for applying dumping permit and its subsequent extension applications from EPD. Contract No. HY/2013/03 has been assigned to coordinate and arrange for disposal of extracted marine sediment from this Contract.
There was no generation of excavated sediment for treatment during this reporting period. Any treatment of excavated marine sediment will be conducted using cement solidification / stabilization (Cement S/S) techniques and the treated sediment will be reused onsite for either backfilling or landscaping (e.g. berm material).
The summary of waste flow table is detailed in Appendix G.
The Contractor was reminded that chemical waste containers should be properly treated and stored temporarily in designated chemical waste storage area on site in accordance with the Code of Practice on the Packing, Labelling and Storage of Chemical Waste.
After the acceptance of the review of the approved Sediment Quality Report (SQR) for this Project under EPD letter dated 19 August 2015, an approval to dispose the marine sediment extracted from bored piling for this Project was then approved under memo from Secretary, Marine Fill Committee of CEDD dated 20 August 2015 for the disposal of marine sediment extracted from bored piling works. The disposal sites allocated to this Project are the Mud Pit CMP2 of the Confined Marine Sediment Disposal Facility to the South of The Brothers (or at the East of Sha Chau). As advised by CEDD in the memo dated 19 February 2016, from 00:00 on 22 March 2016 onward, the disposal space at CMP2 of the South of The Brothers is closed and all disposal of contaminated sediment is to be carried out at CMP Vd to the East of Sha Chau (ESC).
As Contract No. HY/2013/01 has commenced treatment of the extracted marine sediment, treatment will continue and the treated marine sediment will be re-used within the HKBCF Island. On the other hand, Contract Nos. HY/2013/02, HY/2013/03 and HY/2013/04 have not commenced the treatment of extracted marine sediment. Therefore the marine sediment extracted from these three Contracts will be disposed to the allocated disposal sites directly without treatment. As a practical means, the disposal operation is managed by one contractor who is also responsible for applying dumping permit and its subsequent extension applications from EPD. Contract No. HY/2013/03 has been assigned to coordinate and arrange for disposal of extracted marine sediment from all three Contracts.
The SQR was further reviewed in mid-2016. EPD has no comment to extend the validity of the SQR to August 2017 under letter dated 18 August 2016.
Based on the actual piling operation, the estimated quantity of marine sediment to be extracted has been revised from 85,000 m3 to 126,000 m3 (bulk volume). EPD has no comments on the request as in the letter dated 20 October 2016. The Secretary of Marine Fill Committee, CEDD approved the increasing quantity in the memo dated 10 November 2016.
During the course of reviewing the SQR, it was noted that the contamination level of the marine sediment extracted from the inner part of the HKBCF Island was not identified during the previous sampling and testing. As requested by EPD, sampling and testing are required. The Sediment Sampling and Testing Proposal (SSTP) for the inner area of the HKBCF Island was approved by EPD on 2 June 2016.
As in the agreed SSTP for the inner area of the HKBCF Island, samples were taken from the seventeen batches of stockpiled marine sediments and from five boreholes each in one of the five sampling grids. After conducting chemical tests on samples, six batches of stockpiled samples under Contract No. HY/2013/03 and all eight batches of stockpiled samples under Contract No. HY/20013/04 are classified as Category L sediment. The Secretary of Marine Fill Committee of CEDD allocated disposal sites under memo dated 24 October 2016 and dated 22 November 2016 for disposal of a total of 9,500 m3 in-situ volume of Category L sediment (using a bulk factor of 1.3). The Category L sediment was disposed in December 2016.
One sample from the batch of stockpiled marine sediment under Contract No. HY/2013/03 and samples from all five sampling grids had contamination levels exceeding the Lower Chemical Exceedance Levels (LCEL) and biological screenings were carried out. All samples passed the biological screenings and are classified as Category Mp sediment and to be disposed off site using Type II confined marine disposal method the same method used for marine sediment extracted from other part of the HKBCF Island.
The barge for disposal of marine sediment will morn at the temporary loading and unloading at the east shore of the HKBCF Island, which has been being used by reclamation contractor (Contract No. HY/2010/02) for reclamation activities. In terms of safety consideration, each dumping date will be allocated to one Contract. The quantity of marine sediment disposed on the date is from one Contract.
During dumping, each Contractor is responsible for transporting the marine sediment from his site area to the barge. The estimated quantity of marine sediment in each truck is confirmed by Resident Site Staff of each Contract. The trip tickets for transportation and disposal of marine sediment are collected and checked. Contract No. HY/2013/03 as the dumping permit holder is responsible for reporting to EPD the quantity disposed of as the condition stipulated in the dumping permit.
AECOM has confirmed that the disposal of excavated marine sediments to allocated dumping site via Contract No. HY/2013/03 has been completed with the last batch disposal on 30 August 2017. The total quantities disposed are presented in the following table (Table 3.4):
Table 3.4: Summary of Marine Sediment disposed to Dumping Site via Contract No. HY/2013/03
Month/Year |
Type of Sediment and Quantity Disposed (m3) |
|
|
Cat. L (in
Type I) |
Type II |
Total = |
3,570 |
39,814 |
Note: For monthly breakdown of these quantities, please refer to the waste flow table in Appendix G.
The valid environmental licences and permits during the reporting period are summarized in Appendix H.
Summary of Action and Limit Level exceedance of 1-hr TSP level and 24-hr TSP level at AMS6 is reported in the monthly EM&A Reports (for January, February and March 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 AMS7/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 February 2018, a total of two Action Level exceedances of SS were recorded by the Environmental Team of Contract No. HY/2013/01 during the reporting period and investigated by the ET of the Contract.
During March 2018, a total of four Action Level exceedances of SS were recorded by the Environmental Team of Contract No. HY/2013/01 during the reporting period 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 December 2017 to February 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. Also, the investigation of the complaint received on 29 December 2017 by the ET of the Contract was carried over from the previous reporting period and completed during this 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 |
008 |
ENPO-C0134 |
10 March 2018 |
Air Quality
and Water Quality |
Environmental Complaint Ref. No. ENPO-C0134
The complaint was about the regular absence of site staff at the wheel wash facility to clean the wheels of vehicles leaving HZMB BCF Island site after 19:00. A video of the area concerned was provided by the complainant.
The complaint was investigated by the ET of the Contract.
The relevant mitigation measures for washing of site vehicles for the HZMB BCF Island site, as required in the EMIS and statutory requirements in the Air Pollution Control (Construction Dust) Regulations and other applicable environmental legislation, are consolidated as follows:
● Immediately before leaving a construction site, every vehicle shall be washed to remove any dusty materials from its body and wheels and to ensure that no earth, mud or debris is deposited by them on roads.
● Vehicle washing facilities with high pressure water jet should be provided at every discernible or designated vehicle exit point. The area where vehicle washing takes place and the road section between the washing facilities and the exit point should be paved with concrete, bituminous materials or hardcores.
The wheel washing facility at the HY/2013/04 site boundary entrance/exit for vehicles leaving HY/2013/04 site in the direction of HZMB BCF Island site exit was implemented by the Contractor on 27 January 2018. A plan of the wheel washing facility is presented in Attachment 1 of ET’s investigation report. As informed by the Contractor of HY/2013/04, wheel washing facility was staffed by site workers with water hose between 07:00 and 19:00 only on each working day.
During ET’s regular weekly site inspection on 14 March 2018 (between 14:00 and 15:00), the haul road in the vicinity of the wheel wash facility was observed to be watered and no fugitive dust generation from HY/2013/04 works was observed. The additional signage mentioned above was also provided. Photos of implementation of these measures at the wheel wash facility are presented in Attachment 2 of ET’s investigation report. There were no observations referring to air quality mitigation measures associated with watering of site areas.
The Contractor was reminded to properly implement all necessary air and water quality mitigation measures identified in the EM&A Manual. All site vehicles leaving HY/2013/04 site should be properly washed at the wheel washing facilities at HY/2013/04 site exit to prevent muddy trail on the access roads and public roads thereafter.
The Contractor has agreed to provide 24 hours site workers with manual water spray at the wheel washing facility on each working day to ensure all vehicles have been washed before leaving the site.
Photos showing implementation of the wheel washing facility at HY/2013/04 site exit on 14 March 2018 are presented in Attachment 2 of ET’s investigation report.
Environmental Complaint Ref. No. ENPO-C0129
The complaint, received on 29 December 2017, was about effectiveness of mitigation measures for dust and mud on roads related to HZMB BCF Island site works.
The complaint investigation by the ET of the Contract was carried over from the previous reporting period and completed during this reporting period.
This investigation reviewed the effectiveness of mitigation measures implemented by the Contractor of HY/2013/04 to control any potential dust or mud nuisance attributed to vehicles leaving the HY/2013/04 site boundary.
The relevant mitigation measures for access roads for the HZMB BCF Island site, as required in the EMIS and statutory requirements in the Air Pollution Control (Construction Dust) Regulations and other applicable environmental legislation, are consolidated as follows:
● Immediately before leaving a construction site, every vehicle shall be washed to remove any dusty materials from its body and wheels and to ensure that no earth, mud or debris is deposited by them on roads.
● Vehicle washing facilities with high pressure water jet should be provided at every discernible or designated vehicle exit point. The area where vehicle washing takes place and the road section between the washing facilities and the exit point should be paved with concrete, bituminous materials or hardcores.
● Every main haul road shall be paved with concrete, bituminous materials, hardcores or metal plates, and kept clear of dusty materials, or sprayed with water or a dust suppression chemical so as to maintain the entire road surface wet.
● The portion of any road leading only to construction site that is within 30m of a vehicle entrance or exit should be kept clear of dusty materials.
● The Contractor should undertake proper watering on all exposed spoil (with at least 8 times per day) throughout the construction phase.
In early January 2018 RE had requested the Contractor of HY/2013/04 to provide a wheel washing facility at the HY/2013/04 site boundary exit for vehicles to adjacent HKBCF contract site. A map showing the general location of the HKBCF contract sites is presented in Attachment 1 of ET’s investigation report.
As informed by the Contractor of HY/2013/04, water spray was provided by site workers as an interim measure at the HY/2013/04 site boundary entrance/exit for vehicles leaving HY/2013/04 site in the direction of HZMB BCF Island site exit. The wheel washing facility was subsequently completed and implemented on 27 January 2018. Contractor’s photos showing the operation of the wheel wash facility on that day are presented in Attachment 2 of ET’s investigation report.
Also, watering of all main haul roads was provided in accordance with the HY/2013/04 site watering plan (as presented in Attachment 3 of ET’s investigation report). This plan schedules water spraying for at least 8 times per day which follows the recommended mitigation measures in the EM&A Manual and Environmental Permit.
Before operation of the wheel wash facility, ET conducted regular weekly site inspections on 10, 15 and 24 January 2018 with extra focus on the implementation status of all air quality and water quality mitigation measures including haul roads and washing of vehicles leaving HY/2013/04 site. The following observations were made:
● 10 January 2018 (14:00-15:00): Water spray was provided for haul roads in the HY/2013/04 site area. Water spray from two hoses was provided by the Contractor to wash the wheels of vehicles leaving HY/2013/04 and entering HY/2013/02 site towards HZMB BCF Island site exit. No specific observations referring to air or water quality mitigation measures associated with wheel washing facility.
● 15 January 2018 (14:30-15:30): Water spray was provided for haul roads in the HY/2013/04 site area. Water spray from two hoses was provided by the Contractor to wash the wheels of vehicles leaving HY/2013/04 and entering HY/2013/02 site towards HZMB BCF Island site exit. An air quality observation regarding effectiveness of water spray was made; subsequently the Contractor displayed a temporary stop sign to ensure vehicles were being properly washed at this location and the observation was closed. Also, an air quality observation regarding dry haul road at Bridge D1 was observed; subsequently, the Contractor provide water spray.
● 24 January 2018 (14:00-15:00): Water spray was provided for haul roads in the HY/2013/04 site area. Water spray from two hoses was provided by the Contractor to wash the wheels of vehicles leaving HY/2013/04 and entering HY/2013/02 site towards HZMB BCF Island site exit. No specific observations referring to air or water quality mitigation measures associated with wheel washing facility.
Following commencement of operation of the wheel wash facility, ET conducted regular weekly site inspections on 31 January, 9 and 12 February 2018 with extra focus on the implementation status of all air quality and water quality mitigation measures including haul roads and washing of vehicles leaving HY/2013/04 site. The following observations were made:
● 31 January 2018 (14:30-15:00): Water spray provided for haul roads in the HY/2013/04 site area. Wheel wash facility was in operation. No specific observations referring to air or water quality mitigation measures associated with wheel washing facility.
● 9 February 2018 (14:00-15:00): Water spray was provided for haul roads in the HY/2013/04 site area. Wheel wash facility was in operation. No specific observation referring to air or water quality mitigation measures associated with wheel washing facility and access roads was observed.
● 12 February 2018 (14:00-15:00): Wheel wash facility was in operation; no specific observation referring to air or water quality mitigation measures associated with the wheel wash facility was observed. Water spray was provided for haul roads in the HY/2013/04 site area. An air quality observation regarding fugitive dust generated when vehicles passed through the haul road between wheel washing facilities and Box Culvert C was observed. The Contractor was reminded to provide watering on haul road frequently.
Relevant photos for each abovementioned site inspection are presented in Attachment 4 of ET’s investigation report.
Notifications of Summons and Successful Prosecutions
Statistics on notifications of summons and successful prosecutions are summarized in Appendix I.
According to the environmental site inspections undertaken during the reporting period, the following recommendations were provided:
● The Contractor was reminded to clear the general refuse and C&D waste as soon as possible.
● The Contractor was reminded to provide sufficient water spray for haul road.
● The Contractor was reminded to display a sign of temporary stop in the vicinity of wheel washing facilities.
● The Contractor was reminded to clear the general refuse inside the gully on the bridge deck.
● The Contractor was reminded to sort the general refuse and C&D materials properly.
● The Contractor was reminded to provide chemical container with drip tray.
● The Contractor was reminded to display the appropriate NRMM label affixed on the generator.
● The Contractor was reminded to maintain construction plant/equipment/vehicles in good condition.
● The Contractor was reminded to clear the stagnant water as soon as possible.
● The Contractor was reminded to operate the Wetsep as soon as possible.
● The Contractor was reminded to clear the sand as soon as possible to avoid site runoff entering storm drainage channel.
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 11th Quarterly EM&A Report summarising the findings of EM&A activities conducted under the Contract from 1 January 2018 to 31 March 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 January, February and March 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 AMS7/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 January 2018, a total of three Action Level exceedances, consisting of one Action Level exceedance of SS for water quality and two Action Level exceedances of 24-hour TSP for air quality, were recorded by the Environmental Team of Contract No. HY/2013/01 during the reporting period and investigated by the ET of the Contract.
During February 2018, a total of two Action Level exceedances of SS were recorded by the Environmental Team of Contract No. HY/2013/01 during the reporting period and investigated by the ET of the Contract.
During March 2018, a total of four Action Level exceedances of SS were recorded by the Environmental Team of Contract No. HY/2013/01 during the reporting period 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 December 2017 to February 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 January, February and March 2018) prepared for Contract No. HY/2013/01.
Environmental site inspection was carried out on 3, 10, 15, 24 and 31 January, 9, 12, 22 and 28 February and 7, 14, 19 and 28 March 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. Also, the investigation of the complaint received on 29 December 2017 by the ET of the Contract was carried over from the previous reporting period and completed during this 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