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. 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 |
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 2, 9, 16, 23 and
30 November 2017 by the representatives of Engineer, Contractor, ET and IEC
(IEC for 23 November 2017).
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
27
October 2017
1. The
Contractor was reminded to remove general waste accumulated at Building 049.
Subsequently, general waste was removed. The observation was closed on 2 November 2017.
2. The
Contractor was reminded to provide NRMN label to the mobile crane at Box
Culvert B. Subsequently, NRMN label d. The observation was closed on 2 November 2017.
2 November 2017
1. The
Contractor was reminded to remove general waste accumulated at Building 040. Subsequently,
construction waste was removed. The observation was closed on 9 November 2017.
9
November
2017
1. The Contractor was reminded to
remove general waste accumulated at Building 027. Subsequently, general waste
was removed. The observation was closed on 16 November 2017.
16
November
2017
1. The
Contractor was reminded to remove general waste accumulated at Portion K and
Building 048. Subsequently, general waste was removed. The observation was
closed on 23 November 2017.
23 November 2017
1. The
Contractor was reminded to remove general waste accumulated at Building 030.
Subsequently, general waste was removed. The observation was closed on 30
November 2017.
30 November 2017
1. The
Contractor was reminded to provide drop tray for the oil drum beside 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
2 October
2017
1.
Nil findings.
9 October
2017
1.
Nil findings.
16 October
2017
1. Nil findings.
23
October 2017
1. Nil
findings.
30
October 2017
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. The
estimated quantity of surplus filling materials is confirmed by Resident Site
Staff of Contract No. HY/2013/03. The summary of surplus filling materials
delivered to other projects up to the end of October 2017 is shown in Table 7.1.
Table 7.1 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 |
|
5.507 |
|
|
10.919 |
|
Total |
/ |
14.82 |
31.812 |
228.26009 |
12.809 |
12.863 |
300.56409 |
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 for October 2017 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), 12.476 (in｀000m3)
of Inert C & D Wastes and 1.750 (in｀000m3) of Non-inert C &
D Wastes were generated (from Contract No. HY/2013/03) in this reporting
period. 10.191 (in｀000m3) of Inert C & D Wastes were reused in
other projects and 1.557 (in｀000m3) of Inert C & D Wastes was
disposed as public fill. Non-Inert C & D Wastes and 0.050 (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. 0.030 (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
excavated marine mud from the land-based works was disposed of at the
designated disposal sites within Hong Kong as allocated by the Marine Fill
Committee. The Contractor of Contract No. HY/2013/03 shall ensure no spilling
and overflowing of materials during loading / unloading / transportation is
allowed.
7.2.6
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.
7.2.7
Contractor of Contract No. HY/2013/03¨s site
arrangement for disposal of bentonite slurry to Tseung Kwan O Area 137 Fill
Bank was checked by ET and formal consent has been obtained from Tseung Kwan O
Area 137 Fill Bank for receiving used bentonite slurry generated from Contract
No. HY/2013/03.
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 Implementation
status of Regular Marine Travel Route Plan (RMTRP) was checked by ET. Training
of marine travel route for marine vessels operator was given to relevant staff
and relevant records were kept properly. The marine traffic records and
geographical plots of all the vessels tracks to demonstrate the conformance of
the vessel to the proposed route in November 2017 would be provided to ER, ETL,
IEC/ENPO for checking within the month of December 2017.
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 silt curtain was installed since May 2017, Dolphin
Watching Plan (DWP) should be implemented. The status of silt curtain was
reviewed by ET and there was no change on the status of silt curtain during the
reporting period. Implementation status of DWP was checked by ET. The records
of dolphin watching training, regular inspection of the silt curtains and
visual inspection of waters surrounded by the silt curtain in November 2017
would be provided to ER, ETL, IEC/ENPO for checking within the month of December
2017.
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 AMS7 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
There were
Action and Limit Level exceedances of suspended solids, turbidity and dissolved
oxygen recorded on seven 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.
7.5.5
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 one
complaint received in relation to the environmental impact during the reporting
period. The summary of environmental complaints is presented in Table 7.2. The details of cumulative
statistics of Environmental Complaints are provided in Appendix H.
Table 7.2 Summary of Environmental Complaints for the Reporting Month
|
Log No. |
Environmental Complaint Ref. No. |
Date of Complaint Receipt |
Description |
|
014 |
ENPO-C0128 |
23 November 2017 |
Air pollution |
7.6.2 The complaint (ENPO-C0127) was received by
EPD from a member of the public on 27 October 2017 and was referred by EPD 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 27 October 2017.
Details of Complaint
One
complaint was received by EPD on 27 October 2017, with the following
information provided by EPD:
The complainant complained about
the construction site C3 of HZMB artificial island. The construction site
discharged muddy water into open waters which lasted for a week. The
complainant required EPD to follow up and reply.
Investigation
of Complaint
Date Complaint Investigated by Environmental Team: 30 October 2017
Summary of Investigation
After liaising with CHEC and the operation
team, it cannot be identified if the location mentioned in the complaint is
under HY/2013/03 or not. As there are construction sites which under other
contracts of HZMB.
Notwithstanding the above, interview was
conducted on 30 October 2017 with Mr. Marko Chan, Environmental Officer of
CHEC. Only the works area of Box Culvert B was adjoining open waters. There was
no discharge activities during the complained period. Wastewater will be
treated properly before discharge. Water sampling will also be conducted
regularly to monitor water quality. There was SS exceedance recorded at the WQM
station IS(Mf)11 close to the works area Box Culvert B during the complained
period. During the site walk conducted on 27 October 2017, the discharge point
located in the construction site of Box Culvert B has been visited. It was
connected to two tanks in Sewage Treatment Plant which carried underground
water pumped out. Water was being treated before discharge. By observation, the
water discharged from the discharge point and water discharge to the tanks
looked clear.
Investigation Results
Base on the above, the ET of Contract No.
HY/2013/03 cannot conclude that the captioned complaint is 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:
l
Water Quality:
W1-
1.
barges and
hopper dredgers shall have tight fitting seals to
their bottom openings to
prevent leakage of material;
2.
any pipe leakages
shall be repaired quickly. Plant should not be operated with leaking pipes;
3.
loading of barges
and hoppers shall be controlled to prevent splashing of dredged material to the
surrounding water. Barges or hoppers shall not be filled to a level which will
cause overflow of materials or pollution of water during loading or
transportation;
4.
excess
material shall be cleaned from the decks and
exposed fittings of barges
and hopper dredgers before the vessel is moved;
5.
adequate freeboard
shall be maintained on barges to
reduce the likelihood of decks being washed by wave action; and
6.
all vessels shall be
sized such that adequate clearance is
maintained between vessels and the sea bed at all states of the tide to
ensure that undue turbidity is not
generated by turbulence from vessel movement or propeller wash.
W2-
1.
wastewater from
temporary site facilities should be controlled to prevent direct discharge to
surface or marine waters;
2.
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;
3.
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;
4.
rainwater pumped
out from trenches or foundation excavations should be discharged into storm
drains via silt removal facilities;
5.
measures should be
taken to prevent the washout of construction materials, soil, silt or debris
into any drainage system;
6.
open stockpiles of
construction materials (e.g. aggregates and sand) on site should be covered with
tarpaulin or similar fabric during rainstorms;
7.
discharges of
surface run-off into foul sewers must always be prevented in order not to
unduly overload the foul sewerage system;
8.
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 6, 12, 19 and
27 October 2017, 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 6, 12, 19 and 27 October
2017, in particular to the following aspect:
Water Quality:
W1:
， Barges and hopper dredgers shall have tight fitting seals to
their bottom openings to
prevent leakage of material;
， Any pipe leakages shall be repaired quickly. Plant should not be
operated with leaking pipes;
， Loading of barges and hoppers shall be controlled to prevent splashing
of dredged material to the surrounding water. Barges or hoppers shall not be
filled to a level which will cause overflow of materials or pollution of water
during loading or transportation;
， Excess material shall be cleaned from the decks and
exposed fittings of barges
and hopper dredgers before the vessel is moved;
， Adequate freeboard shall be
maintained on barges to reduce the likelihood of decks being washed by wave
action; and
， All vessels shall be
sized such that adequate clearance is
maintained between vessels and the sea bed at all states of the tide to
ensure that undue turbidity is not
generated by turbulence from vessel movement or propeller wash.
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 The complaint (ENPO-C0128) was received by
EPD from a member of the public on 23 November 2017 and was referred by EPD 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 23 November 2017.
Details of Complaint
One
complaint was received by EPD on 23 November 2017, with the following
information provided by EPD:
The complainant
complained that the watering on the construction site is not evenly, resulting
in a lot of dust spreading around, especially construction area near toll
kiosks.
Investigation of Complaint
Date Complaint Investigated by Environmental Team: 24 November 2017
Summary of Investigation
Interview was conducted on 24 November 2017 with Mr. Marko Chan,
Environmental Officer of CHEC and site management. It was confirmed that
watering was undertaken on all exposed spoil with at least 8 times per day
except rainy days.
Investigation Results
The ET of Contract No. HY/2013/03 (including Contract No. HY/2013/06
within Contract No. HY/2013/03) concluded that the captioned complaint is not
related to the construction activities of our contract. Nevertheless, ET has
recommended the Contractor to remind workers to report dusty spots to contractor
to ensure prompt response and necessary follow-up on dust suppression measures
through the complaint hotline. The Contractor had also been reminded to fulfil
the conditions set out in the EP, in particular:
，
Condition 3.23:
The Permit Holder
shall undertake watering at least 8 times per day on all exposed soil within
the Project site and associated work areas throughout the construction phase.
The Contractor had
also been reminded to comply with the requirements stipulated in the
Environmental Mitigation Implementation Schedule (EMIS) of the EM&A Manual,
in particular:
，
Air Quality:
A3: The Contractor
should undertake proper watering on all exposed spoil (with at least 8 times
per day) throughout the construction phase.
Follow up status (complaints)
During weekly site
audit on 2, 9 16 and 23 November 2017, ET confirmed that the Contractor had
fulfilled the conditions set out in the EP including Condition 3.23 and
provided workable and effective air quality mitigation measures on site
including undertaking proper watering on all exposed spoil (with at least 8
times per day) throughout the construction phase.
Recommendations to the Contractor
The Contractor had
been reminded to fully fulfil the conditions set out in the EP and implement
all air quality mitigation measures. ET has also recommended the Contractor to
remind workers to report dusty spots to contractor to ensure prompt response
and necessary follow-up on dust suppression measures through the complaint
hotline.
Follow up Status (Overall)
The captioned
complaint is not valid and therefore, no additional follow up is needed.
However, ET has proposed recommendations to the Contractor, including reminding
workers to report dusty spots to contractor to ensure prompt response and
necessary follow-up on dust suppression measures through the complaint hotline,
and reminded the Contractor on fulfilling the conditions in the EP and
complying with the requirements stipulated in the Environmental Mitigation
Implementation Schedule (EMIS) of the EM&A Manual to the Contractor.
According to site audit conducted recently, ET confirmed all conditions of the
EP had been fulfilled and all mitigation measures stipulated in the EMIS had
been implemented during site audit on 2, 9 16 and 23 November 2017 and will
keep checking their implementation status during the future site audit, in
particular to the following aspect:
，
Air Quality:
A3: The Contractor
should undertake proper watering on all exposed spoil (with at least 8 times
per day) throughout the construction phase.
7.6.4
There was no
notification for summons or prosecutions received in relation to the
environmental impact during this reporting period.
7.6.5
Statistics
on environmental complaints, notifications of summons and successful
prosecutions are provided in Appendix H.