7.
ENVIRONMENTAL SITE INSPECTION AND AUDIT
7.1
Site Inspection
7.1.1
Site
audits were carried out by ET on weekly basis to monitor the implementation of
proper environmental management practices and mitigation measures in the
Project site.
7.1.2
The
landscape work of green roof for Contract No. HY/2013/03 was commenced on 7 November
2017. The landscape work of all areas at ground level for Contract No.
HY/2013/03 was commenced at early February 2018. Detail commencement date of
each building were shown in Table 7.1.
The implementation of mitigation measures for landscape and visual resources
recommended in the EIA Report were monitored during the reporting period.
Landscape and visual mitigation measures in accordance with the EP, EIA and
EM&A Manual were implemented by the Contractor.
Table 7.1 Commencement date of green roof for each building
|
Building
No. of Green Roof |
Commencement
dates of planting for roof greening |
|
037 |
7 Nov 2017 |
|
043 |
20 Dec 2017 |
|
041 |
27 Dec 2017 |
|
026 |
22 Jan 2018 |
|
039 |
22 Jan 2018 |
|
All areas at ground level |
Early Feb 2018 |
|
031 |
8 Mar 2018 |
|
046 |
8 Mar 2018 |
7.1.3
The
joint site audits for Contract No. HY/2013/03 (includes Contract No. HY/2013/06
within Contract No. HY/2013/03 works area) were conducted on 5, 13, 20 and 26 July
2018 by the representatives of Engineer, Contractor, ET and IEC (IEC for 20 July
2018).
7.1.4
Particular
observations during the site inspection and corrective actions undertaken by
the Contractor are described below:
For Contract No. HY/2013/03
28 June 2018
1.
The Contractor was reminded to clear
the waste at Building 037. The observation was closed on 5 July 2018.
5 July 2018
1.
The Contractor was reminded to provide
proper cover for the stockpile at Building 037. The observation was closed on 13
July 2018.
13
July 2018
1. Nil findings.
20
July 2018
1.
The Contractor was reminded to remove
the waste accumulated outside Building 049. The observation was closed on 26 July
2018.
2.
The Contractor was reminded to provide
a new NRMM label for the generator outside Building 049. The observation was closed
on 26 July 2018.
26
July 2018
1.
The Contractor was reminded to remove
the waste accumulated outside Building 049. Follow-up actions for outstanding
observation will be checked in the upcoming site inspections and reported in
the coming reporting period.
For Contract No. HY/2013/06 within Contract No. HY/2013/03
works area
5 July 2018
1. Nil findings.
13
July 2018
1. Nil findings.
20
July 2018
1. Nil findings.
26
July 2018
1. Nil findings.
7.2
Advice on the Solid and Liquid Waste Management Status
7.2.1
The
Contractor of Contract No. HY/2013/03 registered as a chemical waste producer
for the Contract. Sufficient numbers of receptacles were available for general
refuse collection and sorting.
7.2.2
The
monthly summary of waste flow table for Contract No. HY/2013/03 (includes
Contract No. HY/2013/06 within Contract No. HY/2013/03 works area) are detailed
in Appendix E.
7.2.3
Contract
No. HY/2013/03 has been assigned to arrange for delivery of surplus filling
materials from Contract No. HY/2013/03 to other projects, including Tuen Mun -
Chek Lap Kok Link (TM-CLKL) project of HZMB, the Airport Authority Hong Kong’s
Three Runway (3RS) Project, Wan Chai Development Phase II project, Contract No.
HY/2013/02 of HKBCF and Hong Kong Link Road (HKLR) project of HZMB. As confirmed by RSS, all
surplus filling materials delivery
to other projects have been completed with the last batch on 7 May 2018. The total transported quantity up to
the last batch is 379.48358 (in‘000m3).
The summary of surplus filling materials delivered to other projects up to the
end of May 2018 is shown in Table 7.2.
Table 7.2
Summary of Surplus Filling Materials Delivered from Contract No. HY/2013/03 to other projects
|
Month/Year |
Density
(in tonnes/m3) |
Quantity
disposed (in ‘000m3) |
|||||
|
To HY/2013/02 |
To TM-CLKL Project |
To 3RS Project |
To WDII Project |
To HKLR Project |
Total |
||
|
May 2017 |
2.3 |
0 |
12.637 |
0 |
0 |
0 |
12.637 |
|
June 2017 |
2.63925 |
0 |
14.769 |
11.238 |
0 |
0 |
26.007 |
|
July 2017 |
1.9 |
0 |
4.406 |
34.875 |
10.048 |
0.760 |
50.089 |
|
August 2017 |
1.9 |
0.480 |
0 |
67.942 |
2.761 |
7.455 |
78.638 |
|
September 2017 |
1.9 |
5.544 |
0 |
62.770 |
0 |
4.648 |
72.962 |
|
October 2017 |
/ |
3.384 |
0 |
45.92809 |
0 |
0 |
49.31209 |
|
November 2017 |
/ |
5.412 |
0 |
5.507 |
0 |
0 |
10.919 |
|
December 2017 |
/ |
12.57173 |
0 |
0 |
0 |
0 |
12.57173 |
|
January 2018 |
/ |
10.228 |
0 |
0 |
0 |
0 |
10.228 |
|
February 2018 |
/ |
0 |
0 |
0 |
0 |
0 |
0 |
|
March 2018 |
/ |
0.45276 |
0 |
0 |
0 |
0 |
0.45276 |
|
April 2018 |
/ |
0 |
42.544 |
0 |
0 |
0 |
42.544 |
|
May 2018 |
/ |
0 |
13.123 |
0 |
0 |
0 |
13.123 |
|
Total |
/ |
38.07249 |
87.479 |
228.26009 |
12.809 |
12.863 |
379.48358 |
Remarks:
ž The variation in density is due to different compositions of
surplus filling materials
ž There may be discrepancies in the total quantities with the quantities
of inert C&D materials stated in Appendix E and section 7.2.4, due to
rounding errors
ž No density was given from October 2017 to May 2018 due to
the direct volume figures as provided and confirmed by the RSS
7.2.4
0.000 (in‘000m3)
of excavated marine sediment (from Contract No. HY/2013/03), 0.088 (in‘000m3)
of Inert C & D Wastes and 0.590 (in‘000m3) of Non-inert C &
D Wastes were generated (from Contract No. HY/2013/03) in this reporting
period. 0.000 (in‘000m3) of Inert C & D Wastes were reused in
other projects and 0.088 (in‘000m3) of Inert C & D Wastes was
disposed as public fill. 0.000 (in tonnes) of Inert C & D Wastes and 0.100
(in tonnes) of Non-inert C & D Wastes were generated (from Contract No.
HY/2013/06 within Contract No. HY/2013/03 works area) in this reporting period.
0.000 (in tonnes) metals were generated and recycled (from Contract No.
HY/2013/06 within Contract No. HY/2013/03 works area) in this reporting period.
7.2.5
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.
7.3
Environmental Licenses and Permits
7.3.1
The
valid environmental licenses and permits for Contract No. HY/2013/03 (includes Contract No. HY/2013/06 within Contract No.
HY/2013/03 works area) during the reporting period are
summarized in Appendix F. The
Contractor of Contract No. HY/2013/06 was advised to register as a chemical
waste producer when chemical waste is expected to generate for the foreseeable
future from the operations (For Registration as Waste Producer Pursuant to
Waste Disposal (Chemical Waste) (General) Regulation).
7.4
Implementation Status of Environmental Mitigation Measures
7.4.1
In response to the site audit findings,
the Contractor carried out corrective actions.
7.4.2
A
summary of the Implementation Schedule of Environmental Mitigation Measures
(EMIS) is presented in Appendix G. All
necessary mitigation measures at this stage of works were implemented properly.
7.4.3
As
confirmed by RSS, all surplus
filling materials transported from Contract No. HY/2013/03 to other projects by
marine
vessels have been completed with the last batch
delivered on 24 March 2018.
7.4.4
With
respect to condition 3.26A of EP-353/2009/K approved by EPD on 11 April 2016,
the numbers and operating periods of floating grout production facilities and
floating concrete batching plants on-site to review on the compliance to this
EP condition were checked. Under Contract No. HY/2013/03, no floating concrete
batching plant was operated on-site during the reporting period.
7.4.5
As
all the works in Box Culvert B had been completed, the silt curtain was uninstalled
during the reporting period. The Dolphin Watching Plan (DWP) is no longer
applicable.
7.5
Summary of Exceedance of the Environmental Quality
Performance Limit
7.5.1
Summary
of Action and Limit Level exceedance of 1-hr TSP level and 24-hr TSP level at AMS6
shall be referred to the monthly EM&A report prepared by Contract No.
HY/2011/03.
7.5.2
There
was no Action and Limit Level exceedance of 1-hr TSP level and 24-hr TSP level
recorded at station AMS2, AMS3B and AMS7B by the Environmental Team of Contract
No. HY/2013/01 during the reporting period.
7.5.3
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.
7.5.4
Summary
of Action and Limit Level exceedance of water quality at the monitoring stations shown as shown
at Table 4.1 shall be referred to the monthly EM&A report prepared
by Contract No. HY/2013/01.
7.5.5
There were
Action Level exceedances recorded on eight days by the Environmental Team of
Contract No. HY/2013/01 during reporting period. After investigation, it was
concluded that all exceedances were not relevant to Contract No. HY/2013/03.
There was no Action and Limit Level exceedance recorded on other monitoring
dates at the monitoring stations shown as shown at Table 4.1 by the Environmental Team of Contract No. HY/2013/01
during the reporting period.
7.5.6
Ecological
monitoring results at all transects are reported in the EM&A report
prepared by Contract No. HY/2013/01.
7.6
Summary of Complaints, Notification of Summons and
Successful Prosecution
7.6.1
There
was no complaint received in relation to the environmental impact during the
reporting period.
7.6.2
The
complaint (ENPO-C0135) was received by HyD on 13 June 2018 and was referred by
HyD to the ENPO. Then the ENPO forwarded the complaint by email to the ET
(Materialab Consulants Ltd.) of the Contract No. HY/2013/03 on 25 June 2018.
Details of Complaint
One
complaint was received by HyD on 13 June 2018, with the following information
provided by HyD:
The complainant
complained about the construction site of HZMB artificial island. The
construction site discharged muddy water into open waters.
Investigation
of Complaint
Date
Complaint Investigated by Environmental Team: 26 June 2018
Summary
of Investigation
Interview was conducted on 26 June 2018 with Mr. Marko Chan,
Environmental Officer of CHEC. The major construction works under HY/2013/03
were completed. The construction works of Box Culvert B had been completed. As
all the excavation works had been completed, there was no exposed earth grounds
or stockpiles within the site area. The site protection measures for surface
runoff collection and treatment before reaching manhole are effective. There
was no discharge activities during the complained period. The drainage system
in HZMB artificial island is in force. In addition,
the amber rainstorm signal was issued by HKO on 13 June 2018. The source of
muddy water could be resulted from the soil of landscaping works and the
overflow from HZMB artificial
island due to
the heavy rain on 13 June 2018.
There was no exceedance recorded
at the WQM station close to Box Culvert B during the complained period.
During the site walk conducted on 26 June
2018, Box Culvert B and the gully of drainage system have been visited. By
observation, bunding was provided for all the gullies within the contract site
area to prevent muddy runoff discharge to the drainage system, the water
discharge to the open water from Box Culvert B looked clear.
Investigation
Results
Base on the above, the ET of Contract No. HY/2013/03 conclude that the
captioned complaint is not related to the construction activities of our
contract. Nevertheless, the Contractor had been reminded to comply with the
requirements stipulated in the Environmental Mitigation Implementation Schedule
(EMIS) of the EM&A Manual, in particular:
Water Quality:
W2-
· wastewater from temporary site facilities should be
controlled to prevent direct discharge to surface or marine waters;
· storm drainage shall be directed to storm drains via
adequately designed sand/silt removal facilities such as sand traps, silt traps
and sediment basins. Channels, earth bunds or sand bag barriers should be
provided on site to properly direct stormwater to such silt removal facilities.
Catchpits and perimeter channels should be constructed in advance of site
formation works and earthworks;
· silt removal facilities, channels and manholes shall
be maintained and any deposited silt and grit shall be removed regularly,
including specifically at the onset of and after each rainstorm;
· rainwater pumped out from trenches or foundation
excavations should be discharged into storm drains via silt removal facilities;
· measures should be taken to prevent the washout of
construction materials, soil, silt or debris into any drainage system;
· open stockpiles of construction materials (e.g.
aggregates and sand) on site should be covered with tarpaulin or similar fabric
during rainstorms;
· discharges of surface run-off into foul sewers must
always be prevented in order not to unduly overload the foul sewerage system;
· surface run-off from bunded areas should pass through
oil/grease traps prior to discharge to the stormwater system.
Follow
up status (complaints)
During
weekly site audit on 7, 14 and 20 June 2018, ET confirmed that the Contractor
had provided workable and effective water quality mitigation measures on site.
Recommendations
to the Contractor
The Contractor was reminded to continue to fully implement
all water quality mitigation measures and comply with the requirements of Water
Discharge License.
Follow up Status (Overall)
The captioned complaint is
not considered valid and therefore, no additional follow up is needed. However,
ET has proposed several recommendations to the Contractor, and reminded on
complying with the requirements stipulated in the Environmental Mitigation
Implementation Schedule (EMIS) of the EM&A Manual. According to site audit
conducted recently, ET confirmed all mitigation measures stipulated in the EMIS
had been implemented during site audit on 7, 14 and 20 June 2018, in particular
to the following aspect:
Water Quality:
W2:
· wastewater from temporary site facilities should be
controlled to prevent direct discharge to surface or marine waters;
· storm drainage shall be directed to storm drains via
adequately designed sand/silt removal facilities such as sand traps, silt traps
and sediment basins. Channels, earth bunds or sand bag barriers should be
provided on site to properly direct stormwater to such silt removal facilities.
Catchpits and perimeter channels should be constructed in advance of site
formation works and earthworks;
· silt removal facilities, channels and manholes shall
be maintained and any deposited silt and grit shall be removed regularly,
including specifically at the onset of and after each rainstorm;
· rainwater pumped out from trenches or foundation
excavations should be discharged into storm drains via silt removal facilities;
· measures should be taken to prevent the washout of
construction materials, soil, silt or debris into any drainage system;
· open stockpiles of construction materials (e.g.
aggregates and sand) on site should be covered with tarpaulin or similar fabric
during rainstorms;
· discharges of surface run-off into foul sewers must
always be prevented in order not to unduly overload the foul sewerage system;
· surface run-off from bunded areas should pass through
oil/grease traps prior to discharge to the stormwater system.
7.6.3
There
was no notification for summons or prosecutions received in relation to the
environmental impact during this reporting period.
7.6.4
Statistics
on environmental complaints, notifications of summons and successful
prosecutions are provided in Appendix H.