Table
of contents
4 summary of
Monitoring Results and exceedances
4.1 Summary of Noise Monitoring Results
4.2 Summary of Air Quality Monitoring Results
4.3 Summary of Water Quality Monitoring Results and Exceedances
4.4 Construction Waste Summary
5 REVIEW ON
ENVIRONMENTAL IMPLEMENTATION AND COMPLIANCE
5.4 Site Implementation and Compliance Audit
6 summary of
complaints, notification of summons and prosecution
7.1 Review on the EIA predictions and EIA Process
7.3 Review on Monitoring Methodology
7.5 Review on Environmental Acceptability of the Project
lIST OF TABLES
Table 2.1 Contact Details
of Key Personnel
Table 3.1 Continuous Noise
Monitoring Stations
Table 3.2 Air Quality
Monitoring Stations
Table 3.3 Water Quality
Monitoring Stations
Table 3.4 Marine Water Quality
Monitoring Frequency and Parameters
Table 4.1 Continuous Noise
Monitoring Station
Table 4.2 Comparison of LAeq, 30min, 0700-1900
Table 4.3 Air Quality
Monitoring Stations and
corresponding Action
and Limit Levels
Table 4.4 Comparison of 24-hr TSP and 1-hr TSP
Table 4.5 Water Quality
Monitoring Stations
Table 4.6 Summary of Water
Quality Monitoring exceedance in the reporting period
Table 4.7 Comparison of DO
and SS
Table 4.8 EPD Routine
Monitoring Data at Victoria Harbour (VM6) – Suspended Solid
Table 4.9 Details of Waste
Disposal
Table 4.10 Monitoring
Summary for HY/2009/18 in Landscape Maintenance Period
Table 4.11 Monitoring
Summary for HK/2012/08 in Landscape Maintenance Period
Table 6.1 Cumulative
Statistics on Complaints
Table 6.2 Cumulative Statistics
on Successful Prosecutions
lIST OF FIGUREs
Figure 2.1 Project Layout
Figure 3.1 Locations of Environmental
Monitoring Stations
Figure 4.1 HY/2009/18 Landscape Area under
EP-122/2002/E
Figure 4.2 HK/2012/08 Landscape Area under
EP-122/2002/E
lIST OF CHART
Chart 4.1 Comparison between
Central Roadside Station RSP Hourly Average and ACL2a 1-hr TSP
lIST OF APPENDIces
Appendix 2.1 Environmental Mitigation Implementation Schedule
Appendix 3.1 Action and Limit Level
Appendix 4.1 Noise Monitoring
Graphical Presentations
Appendix 4.2 Air Quality Monitoring
Graphical Presentations
Appendix 4.3 Water Quality Monitoring
Graphical Presentations
Appendix 4.4 Monitoring for
Landscape Maintenance Period
Appendix 4.5 Confirmation of work completion
Appendix 5.1 Event Action Plans
Appendix 5.2 Notification of Exceedances
EXECUTIVE SUMMARY
- Civil
Engineering and Development Department (CEDD), the Project Proponent, has been granted
EP-122/2002/E for the construction and operation of Central Reclamation
Phase III Project (CRIII).
- Lam Geotechnics Limited (LGL) was appointed
to take up the role as the ET to undertake the EM&A programme
described in the approved EM&A Manual under EP-122/2002/E for the
remaining CRIII works since May 2015, four stages of ET contract were
involved; Contract HK/2011/07 – Wan Chai Development Phase II and Central
Wan Chai Bypass – Sampling, Field Measurement and Testing works (Stage 2),
HK/2015/01 – Wan Chai Development Phase II and Central Wan Chai Bypass –
Sampling, Field Measurement and Testing works (Stage 3) and HY/2019/18 – Wan Chai Development
Phase II and Central Wan Chai Bypass – Sampling, Field Measurement and
Testing works (Stage 4).
Works Contracts and corresponding major
construction undertaken during construction phase monitoring programme
- Contract
HY/2009/18 was responsible for the remaining CRIII works
involving road works at
CRIII area.
- Contract
HY/2010/08 was responsible for the remaining CRIII works
involving junction
modification works at CRIII area.
- Contract
HK/2012/08 was responsible for construction works involving designated
project work I (DP1) and designated project work II (DP2).
- The principle
construction activities undertaken by the above contracts during the
monitoring period are listed as follows:
·
Central Reclamation
Phase III
·
Roads P12,
D9Road P2
and D11
i.
vii.
With confirmation from Engineer Representative
that construction of remaining CRIII Works involving Contract no. HY/2009/18,
HY/2010/08 and HK/2012/08 were completed on 01 November 2018, 15 August 2019
and 21 October 2019 respectively. Environmental Monitoring and Audit (EM&A)
Programme fulfilled the termination criteria set out in Section 8.5.1 of the
EM&A Manual, therefore termination of EM&A programme is proposed under
EP-122/2002/E condition 4.1.
- This Final EM&A Report for
remaining CRIII works is prepared in accordance with EM&A manual Section 8.5.3
under Environmental Permit no. EP-122/2002/E.
This report presents the environmental monitoring and audit findings and
information recorded during the period of May 2013 to October 2021.
Noise Monitoring
- Continuous
noise monitoring station was conducted at ACL3 – City Hall during the
construction period.
- No project
related exceedance was recorded during the construction period.
Air Quality Monitoring
- 1-hour and
24-hour Total Suspended Particulates (TSP) monitoring were conducted on
every six days basis at ACL1 – City Hall and ACL2a – Contractor HK/2012/08
Site Office during the construction period.
- No project
related exceedance was recorded during the construction period.
xiii.
Water quality
monitoring at M5B and Culvert J were conducted three days per week during
construction period.
xiv.
No project related
exceedance was recorded during the construction period.
Implementation of Environmental Measures
- The
Contractor's implementation of mitigation measures were audited by weekly site
inspections.
- No
non-compliance or outstanding follow-up action recorded during the
construction period.
Landscape Maintenance Period
- The
Contractor's landscape maintenance on planting works were audited during
quarterly landscape monitoring for 12-month period.
- No
non-compliance or outstanding follow-up action recorded during the
maintenance period.
Complaints, Notifications of
Summons and Successful Prosecutions
xix.
Total 5
environmental complaints were received, among which 2 cases were project-related.
The required follow-up actions were taken by Contractor. All complaint cases
were closed.
xx.
No notification of
summons or successful prosecution was recorded throughout the construction
stage.
1 Introduction
1.1
Scope of the Report
1.1.1.
This is the Final EM&A Review Report
submitted under EM&A manual Section 8.5.3 specific for CRIII remaining
works under EP-122/2002/E. This report presents the environmental monitoring
and audit findings and information recorded during the period of May 2013 to
October 2021.
1.2
Structure
of the Report
Section
1 Introduction –
details the scope and structure of the report.
Section
2 Project Background –
summarizes background and scope of the project, site description, project
organization and contact details of key personnel during the reporting period.
Section
3 Monitoring Requirements –
summarizes all monitoring parameters, monitoring methodology and equipment,
monitoring locations, monitoring frequency, criteria and respective event and
action plan and monitoring programmes.
Section
4 Summary of Monitoring Results and
Exceedances – summarizes the monitoring results and exceedances
recorded throughout the monitoring programme.
Section 5 Review on Site
Environmental and Compliance – summarizes the auditing of monitoring results, all
exceedances of environmental parameters.
Section 6 Summary of Complaints,
Notification of summons and Prosecution – summarizes the cumulative
statistics on complaints, notification of summons and prosecution
Section 7 Review on EIA Predictions, EIA
Process, Monitoring Methodology, EM&A Programme and Environmental
Acceptability – review the validity of EIA
predictions, effectiveness of the environmental management system.
Section 8 Conclusion
2 PROJECT BACKGROUND
2.1.1 Central Reclamation
Phase III - Studies, Site Investigation, Design and Construction (hereafter
called “the Project”) are Designated Project (DP) under the Environmental
Impact Assessment Ordinance (Cap. 499) (EIAO). Civil Engineering and
Development Department (CEDD) as the Project Proponent of the Central
Reclamation Phase III Project (CRIII) has been granted Environment Permit
EP-122/2002/E for the construction and operation of the designated project.
2.1.2 The Main
Works undertaken by Contract HK 12/02 and Contract HK 16/03 for CRIII commenced
on 28th February 2003 and were completed in January 2014.
Corresponding EM&A programme and the Final EM&A Summary Report (July
2003 to January 2014) were completed by Atkins China Limited (ACL).
2.1.3 The
remaining CRIII works undertaken by HK/2012/08 were commenced on 27 May 2013 and were completed on 21 October 2019.
Major
construction works undertaken during construction phase monitoring programme
·
Central Reclamation
Phase III
·
Roads P1, Road P2 and D11
2.2.1.
Outstanding works undertaken by HY/2009/18 were commenced in 7 July
2015 and were completed on 1 November 2018.
2.2.2.
Junction modification works undertaken by
HY/2010/08 were commenced in July 2018 and were completed on 15 August 2019.
2.2.3.
Project
Organization and contact particulars for the remaining CRIII works construction phase involving the Project
Proponent, Project Engineer, Contractor(s), Environmental Team and Independent
Environmental Checker are summarized in Table 2.1.
Table
2.1 Contact Details of
Key Personnel
|
Party |
Role |
Post |
Name |
Contact No. |
Contact Fax |
|
CEDD |
Project
Proponent / Permit Holder |
Engineer |
Mr. Jimmy
Ling |
3842 7046 |
2369 4980 |
|
AECOM |
Engineer’s
Representative for WDII |
Senior
Resident Engineer |
Mr. S.K. Lo |
2587 1778 |
2587 1877 |
|
AECOM |
Engineer’s
Representative for CWB |
|
M |
|
|
|
China State-
Build King JV |
Contractor Contractor
under Contract no. HK/2012/08 |
Project Director |
C. N. LAI |
9106
5806 |
2877
1522 |
|
Site Agent |
Mr. George
Cheung |
9268
1918 |
|||
|
China State |
Contractor
under Contract no.
HY/2010/08 |
Project Director |
Mr. Chris Leung |
3467 4299 |
2566 8061 |
|
Site Agent |
Mr. Danny Chan |
3557 6452 |
|||
|
Leighton Contractors (Asia) Limited |
Contractor under
Contract no. HY/2009/18 |
Site Agent |
Mr. Jimmy Chu |
3973 0803 |
2140 6799 |
|
Ramboll Hong Kong Limited |
Independent Environmental Checker (IEC) |
Independent Environmental Checker (IEC) |
Mr. David Yeung |
3465 2888 |
3465 2899 |
|
Lam Geotechnics Limited |
Environmental Team (ET) |
Environmental Team Leader (ETL) |
Mr. Raymond
Dai |
2882 3939 |
2882 3331 |
3
Monitoring Requirements
3.0.1 Appendix 3.1 shows the established
Action/Limit Levels for the monitoring works.
3.1
Noise
Monitoring
NOISE Monitoring Stations
3.1.1 The
continuous noise monitoring station for the Project is listed and shown in Table 3.1 and Figure 3.1
Table 3.1 Continuous Noise Monitoring Stations
|
District |
Station |
Description |
|
Central |
ACL3 |
City Hall |
Noise Monitoring Parameters, Frequency and Duration
3.1.2 Continuous 24-hour noise monitoring
shall be carried out at the designated monitoring stations. The following is an
initial guide on the regular monitoring frequency for each station on a 24
hours daily basis when noise generating activities are underway:
·
One set of
measurements between 0700 and 1900 hours on normal weekdays.
·
One set of
measurements between 1900 and 2300 hours on normal weekdays and 0700 and 2300
hours on public holidays.
·
One set of
measurements between 2300 and 0700 hours on next day on every day.
3.1.3 If construction works are extended to include works during
the hours of 1900 – 0700 as well as public holidays and Sundays, additional
weekly impact monitoring shall be carried out during respective restricted
hours periods. Applicable permits under NCO shall be obtained by the
Contractor.
3.2
Air Quality Monitoring
Air Quality Monitoring Stations
3.2.1 The air quality monitoring stations for the Project
are listed and shown in Table 3.2 and Figure
3.1.
Table 3.2 Air
Quality Monitoring Stations
|
Station ID |
Description |
|
ACL1 |
City Hall |
|
ACL2 |
People’s
Liberation Army Headquarter |
|
ACL2a |
Contractor
HK/2012/08 Site Office |
Remark: Due to the
large-scale renovation works at People’s Liberation Army Headquarter, ACL2 -
People’s Liberation Army Headquarter was relocated to ACL2a – Contractor
HK/2012/08 Site Office. According to approved relocation proposal, the ACL2a
baseline, action and limit level shall adopt the reference monitoring result at
CMA6 of EP-356/2009 Baseline Environmental Monitoring Report.
Air
QUALITY Monitoring Parameters, Frequency and Duration
3.2.2
One-hour
and 24-hour TSP levels should be measured to indicate the impacts of
construction dust on air quality. The 24-hour TSP levels shall be measured by
following the standard high volume sampling method as set out in the Title 40
of the Code of Federal Regulations, Chapter 1 (Part 50), Appendix B.
3.2.3 All relevant data including temperature, pressure, weather
conditions, elapsed-time meter reading for the start and stop of the sampler,
identification and weight of the filter paper, and any other local atmospheric
factors affecting or affected by site conditions, etc., shall be recorded down
in detail.
3.3
Water Quality Monitoring
3.3.1 The EIA
Report has identified that the key water quality impact would be associated
with the dredging works during the construction phase. Marine water quality monitoring for dissolved
oxygen (DO), suspended solid (SS) and turbidity is therefore recommended to be
carried out at selected WSD flushing water intakes. The impact monitoring should be carried out
during the proposed dredging works to ensure the compliance with the water
quality standards.
WATER Quality Monitoring Stations
3.3.2 The water
quality monitoring stations for the Project are listed and shown in Table
3.3 and Figure 3.1.
Table 3.3 Water Quality
Monitoring Stations
|
Station ID |
Description |
Easting |
Northing |
|
Cooling Water Intakes |
|||
|
M5B |
Swire / Government Headquarters/
Tamar Development/ MTRCL and HSBC Headquarters |
835169 |
816052 |
|
Culverts (Reference
Station) |
|||
|
Culvert J |
Culvert J Outfall Location |
835082 |
816071 |
Water Quality Parameters
3.3.3 Monitoring
of dissolved oxygen (DO), turbidity and suspended solids (SS) shall be carried
out at WSD flushing water intakes and cooling water intakes. DO and Turbidity are
measured in-situ while SS is determined in laboratory.
3.3.4 In
association with the water quality parameters, other relevant data shall also
be measured, such as monitoring location/position, time, sampling depth, water
temperature, pH, salinity, dissolved oxygen (DO) saturation, weather
conditions, sea conditions, tidal stage, and any special phenomena and work
underway at the construction site, etc.
Sampling Procedures and Monitoring Equipment
3.3.5 The interval
between two sets of monitoring should not be less than 36 hours except where
there are exceedances of Action and/or Limit Levels, in which case the
monitoring frequency will be increased. Table 3.4 shows the
proposed monitoring frequency and water quality parameters. Duplicate in-situ
measurements and water sampling should be carried out in each sampling event.
For selection of tides for in-situ measurement and water sampling, tidal range
of individual flood and ebb tides should be not less than 0.5m.
Table
3.4 Marine Water Quality
Monitoring Frequency and Parameters
|
Activities |
Monitoring Frequency1 |
Parameters2 |
|
During the 4-week baseline monitoring period |
Three days per week, at mid-flood and mid-ebb
tides |
Turbidity, Suspended Solids (SS), Dissolved
Oxygen (DO), pH, Temperature, Salinity |
|
During marine
construction works |
Three days per week, at mid-flood and mid-ebb
tides |
Turbidity, Suspended Solids (SS), Dissolved
Oxygen (DO), pH, Temperature, Salinity |
|
After completion
of marine construction works |
Three days per week, at mid-flood and mid-ebb
tides |
Turbidity, Suspended Solids (SS), Dissolved
Oxygen (DO), pH, Temperature, Salinity |
Notes:
1.
For
selection of tides for in-situ measurement and water sampling, tidal range of
individual flood and ebb tides should be not less than 0.5m.
2.
Turbidity should be measured in situ whereas SS
should be determined by laboratory.
4 summary of Monitoring Results and exceedances
4.1
Summary
of Noise Monitoring Results
4.1.1
The
noise monitoring according to EM&A manual requirement was commenced since 1
May 2013.
4.1.2
Due
to safety concerned, the location of the continuous noise monitoring station at
City Hall was finely adjusted to the roof of the City Hall, Low Block on 1 May
2013.
4.1.3
The continuous noise monitoring stations is summarized in Table
4.1 below.
Table 4.1 Continuous Noise Monitoring Stations
|
Location ID |
District |
Description |
|
ACL3 |
Central |
City Hall |
4.1.4
The
major construction activities involved site preparation and utilities / cooling
mains diversion in 2013.
During the monitoring period, the
construction noise level was generally below the baseline noise level while
limit level exceedance was recorded occasionally. After the investigation, the
exceedance recorded was concluded as non-project related and contributed by
City Hall’s renovation work and nearby traffic.
4.1.5
The
major construction activities involved culvert diversion, seawall modification,
diaphragm wall, guide wall and pipe pile construction in 2014.
During the monitoring period, the
construction noise level was generally below the baseline noise level while
limit level exceedance was recorded occasionally. After the investigation, the
exceedance recorded was concluded as non-project related and contributed by
City Hall’s renovation work, public activities at the area opposite to
monitoring station and adverse weather.
4.1.6
The
major construction activities involved seawall modification, road works,
drainage works, socket H-pile construction, ELS construction and pipe pile wall
construction in 2015.
During the monitoring period, the
construction noise level was generally below the baseline noise level while
limit level exceedance was recorded occasionally. After the investigation, the
exceedance recorded was concluded as non-project related and contributed by
public activities at the area opposite to monitoring station.
4.1.7
The
major construction activities involved tunnel construction, road works, drainage
work and seawall modification in 2016.
During the monitoring period, the
construction noise level was generally below the baseline noise level while
limit level exceedance was recorded occasionally. After the investigation, the
exceedance recorded was concluded as non-project related and contributed by
public activities at the area opposite to monitoring station.
4.1.8
The
major construction activities involved backfilling, road works, drainage work,
culvert reinstatement, cooling mains reinstatement and seabed trimming in 2017.
During the monitoring period, the
construction noise level was generally below the baseline noise level while
elevated noise level was observed in June, November and December 2017.
According to the site record, City Hall’s renovation works at the roof top was
conducted in June 2017 and increasing number of public activitiesvates
held at the area opposite to the monitoring station (Central Harbourfront) was
observed in November and December 2017. As such, the elevated noise level was considered
as non-Project related. Limit level exceedance was recorded occasionally. After
the investigation, the exceedance recorded was concluded as non-project related
and contributed by public activities at the area opposite to monitoring
station, renovation works at the City Hall roof top and adverse weather.
4.1.9
The
major construction activities involved culvert reinstatement, road works,
drainage works, and seabed trimming and seawall reinstatement in 2018.
During the monitoring period, the
major construction activities was started to scale down while the construction
noise level recorded above baseline level was due to the increasing number of
public activitiesactivates
held at the area opposite to the monitoring station (Central Harbourfront) in
2018. As such, the elevated noise level was considered as non-Project related.
Limit level exceedance was recorded occasionally. After the investigation, the
exceedance recorded was concluded as non-project related and contributed by
public activities at the area opposite to monitoring station and adverse
weather.
4.1.10
The
major construction activities involved road works, drainage works, and seawall
reinstatement in 2019.
During the monitoring period, the
major construction activities was significantly scale down while the
construction noise level recorded above baseline level was due to the
increasing number of public activitiesactivates
held at the area opposite to the monitoring station (Central Harbourfront) in
2019. Limit level exceedance was recorded occasionally. After the
investigation, the exceedance recorded was concluded as non-project related and
contributed by public activities at the area opposite to monitoring station and
adverse weather.
4.1.11
As
WDII RSS confirmation of construction works completion at CRIII area on 21
October 2019 and agreed with IEC on 1 November 2019, the continuous noise
monitoring at ACL3 – City Hall was suspended from 1 November 2019 onward.
4.1.12
Considered
that the construction works under Contract HK/2012/08 was conducted in daytime
and significantly scale down from the quarter of August to October 2019, the
average LAeq, 30 min, 0700-1900 on normal week day from the quarter
of August to October 2019 would be compared with baseline level to demonstrate
the narrow down of monitoring exceedances due to construction activities and
the return of ambient environmental conditions.
4.1.13
The
comparison of LAeq, 30min, 0700-1900 baseline level and average LAeq,
30min, 0700-1900 from August to October 2019 of ACL3 – City Hall are
summarized in Table 4.2.
Table 4.2 Comparison of LAeq, 30min,
0700-1900
|
Monitoring
Location |
Baseline
Level |
August to
October 2019 Average |
|
LAeq,
30min, 0700-1900 dB(A) |
LAeq,
30min, 0700-1900 dB(A) |
|
|
ACL3 |
64.4 |
63.0 |
Remark 1: The
average Baseline Level of LAeq, 30min, 0700-1900 shall refer to
Noise Monitoring Station – City Hall in Baseline Environmental Monitoring
Report for CRIII.
4.1.14
Comparing
the baseline level with the quarterly average level from August to October
2019, it indicated that the noise level returned to baseline condition.
4.1.15
Details of graphical presentation of noise
monitoring result can referred to Appendix
4.1.
4.2
Summary of Air Quality
Monitoring Results
4.2.1 The air
quality monitoring according to EM&A manual requirement was commenced since
1 May 2013.
4.2.2 The air
quality monitoring station at People’s Liberation Army Headquarter (ACL2) was
handover from ACL (ET of CRIII Contract No. HK 12/02 and HK 16/03) to LGL (ET
of CRIII Contract HK/2012/08) since May 2013. Due to the large-scale renovation
works at People’s Liberation Army Headquarter, a proposal for relocation of air
quality monitoring station at People’s Liberation Army Headquarter (ACL2) was
formally submitted to EPD on 4 November 2013 and was approved on 27 November
2013. According to the approved proposal, the air quality monitoring station
ACL2 was relocated to Contractor HK/2012/08 Site Office. The Action and Limit
levels of ACL2a had adopted the monitoring result (Monitoring Station CMA6)
from the baseline air monitoring report under EP-356/2009.
4.2.3 The air
quality monitoring stations are summarized in Table 4.3 below.
Table
4.3 Air Quality Monitoring Station and corresponding Action and Limit Levels
|
Station
ID |
1-hour TSP (μg/m3) |
24-hour TSP (μg/m3) |
||
|
Action Level |
Limit Level |
Action Level |
Limit Level |
|
|
ACL1 |
460 |
500 |
163 |
260 |
|
ACL2 |
|
500 |
|
260 |
|
ACL2a |
300.1 |
500 |
187.3 |
260 |
Remark 1: The 24-hr TSP and 1-hr TSP action levels and limit level
for ACL1 and ACL2 shall refer to Baseline Environmental Monitoring Report
prepared by ACL.
Remark 2: ACL2 - People’s Liberation Army Headquarter
was relocated to ACL2a – Contractor HK/2012/08 Site Office. The 24-hr TSP and 1-hr
TSP action and limit level of ACL2a shall refer to baseline monitoring result
at CMA6 from Baseline Environmental Monitoring Report under EP-356/2009.
4.2.4 The major construction activities
involved site preparation and utilities / cooling mains diversion in 2013.
In general, the monitoring results
indicated that a reduction in TSP level during wet season from April to
September.
No exceedance was recorded during
the monitoring period.
4.2.5 The major construction activities
involved culvert diversion, seawall modification, diaphragm wall, guide wall
and pipe pile construction in 2014.
In general, the monitoring results
indicated that a reduction in TSP level during wet season from April to
September.
No exceedance was recorded during
the monitoring period.
4.2.6
The
major construction activities involved seawall modification, road works,
drainage works, socket H-pile construction, ELS construction and pipe pile wall
construction in 2015.
In general, the monitoring results
indicated that a reduction in TSP level during wet season from April to
September.
Total one action level exceedance of
24hr TSP exceedance was recorded at ACL1 – City
Hall and one action level exceedance of 24hr TSP exceedance
was recorded at ACL2a – Contractor HK/2012/08 Site Office during the
monitoring period. After the investigation, the exceedance was considered as
non-Project related and contributed by air pollution level of ambient air
quality.
4.2.7 The major construction activities
involved tunnel construction, road works, drainage work and seawall
modification in 2016.
In general, the monitoring results
indicated that a reduction in TSP level during wet season from April to
September.
No exceedance was recorded during
the monitoring period.
4.2.8
The
major construction activities involved backfilling, road works, drainage work,
culvert reinstatement, cooling mains reinstatement and seabed trimming in 2017.
In general, the monitoring results
indicated that a reduction in TSP level during wet season from April to
September.
Total one limit level exceedance of 24hr
TSP exceedance
was recorded at ACL1 – City Hall during the monitoring period.
After the investigation, the exceedance was considered as non-Project related
and contributed by air pollution level of ambient air quality.
4.2.9 The major construction activities
involved culvert reinstatement, road works, drainage works, and seabed trimming
and seawall reinstatement in 2018.
In general, the monitoring results
indicated that a reduction in TSP level during wet season from April to
September.
No exceedance was recorded during
the monitoring period.
4.2.10
The
major construction activities involved road works, drainage works, and seawall
reinstatement in 2019.
In general, the monitoring results
indicated that a reduction in TSP level during wet season from April to
September.
Total one action level exceedance of
1hr TSP exceedance was recorded at ACL2a –
Contractor HK/2012/08 Site Office during the monitoring period. After the
investigation, the exceedance was considered as non-Project related and contributed
by air pollution level of ambient air quality.
4.2.11 As WDII
RSS confirmation of construction works completion at CRIII area on 21 October
2019 and agreed with IEC on 1 November 2019, the air quality monitoring at ACL1
– City Hall and ACL2a – Contractor HK/2012/08 Site Office was suspended from 1
November 2019 onward.
4.2.12 Considered
that the construction works under Contractor HK/2012/08 was significantly scale
down from the quarter of August to October 2019, the average TSP level from the
quarter of August to October 2019 would be compared with baseline level to
demonstrate the narrow down of monitoring exceedances due to construction
activities and the return of ambient environmental conditions.
4.2.13 The comparison
of TSP baseline level and average TSP level from August to October 2019 of ACL1
– City Hall and ACL2a – Contractor HK/2012/08 Site Office are summarized in Table
4.4.
Table 4.4 Comparison of 24-hr TSP and 1-hr
TSP
|
Station ID |
24-hr TSP
(μg/m3) |
1-hr TSP
(μg/m3) |
||
|
Baseline
level |
August to
October 2019 average |
Baseline
level |
August to
October 2019 average |
|
|
ACL1 |
51 |
45.4 |
324 |
69.3 |
|
ACL2 |
37 |
- |
280 |
- |
|
ACL2a |
88.2 |
57.4 |
77.1 |
89.4 |
Remark 1: The 24-hr
TSP and 1-hr TSP baseline level for ACL1 and ACL2 shall refer to Air Quality
Monitoring Station - City Hall and PLA Site in Baseline Environmental
Monitoring Report for CRIII.
Remark 2: ACL2
- People’s Liberation Army Headquarter was relocated to ACL2a – Contractor
HK/2012/08 Site Office. Baseline level of ACL2a shall refer to monitoring
result at CMA6 in Baseline Environmental Monitoring Report under EP-356/2009.
4.2.14 Comparing
the baseline level with the quarterly average level of 24-hr TSP and 1-hr TSP,
it indicated that the 24-hr TSP level at ACL1, ACL2a and 1-hr TSP level at ACL1
were generally returned to baseline condition. No project related exceedance
was recorded during the latest quarter.
4.2.15 Comparing
the baseline level with the latest quarterly average level of 1-hr TSP level at
ACL2a, it shows that latest quarterly average level of 1-hr TSP level at ACL2a
was slightly higher than baseline level.
4.2.16
It shall be taken into account that the
elevated Air Quality Health index (AQHI) (From Level 5 to Level 7) was recorded
on 24 August 2019 at EPD Central/Western General Station, Central Roadside
Station and Causeway Bay Roadside Station. Chart 43.1
showed that high RSP hourly average at Central Roadside Station was recorded on
24 August 2019 as well. The average
level of 1-hr TSP between August and October 2019 excluding 24 August 2019 at
ACL2a was 79.95 μg/m3, which was very close to the baseline level (77.1μg/m3).
Comparing the RSP hourly average recorded between August to October 2019 at
Central roadside station with 1-hr TSP recorded between August to October 2019
excluding 24 August 2019 at ACL2a in Chart 34.1,
it showed that the fluctuation of 1-hr TSP level at ACL2a was similar with hourly
average RSP level at Central Roadside Station. Therefore, it can be concluded
that the air quality was generally return to baseline condition.
Chart 4.1 Comparison between Central Roadside Station RSP Hourly Average
and ACL2a 1-hr TSP
24 Aug 2019
4.2.17 Details of
graphical presentation of air quality monitoring result can be referred to Appendix 4.2.
4.2.18 The
notification of exceedance can referred to Appendix 5.2
4.3
Summary of Water Quality
Monitoring Results and Exceedances
4.3.1
As
confirmed by WDII RSS, the dredging works, seawall modification works and other
associated works undertaken at Central Reclamation Phase III by Contractor
HK/2012/08 was commenced in late September 2014. The water quality monitoring
according to EM&A manual requirement was commenced since 26 September 2014.
4.3.2
The
water quality monitoring stations are summarized in Table 4.5 below.
Table 4.5 Water
Quality Monitoring Station
|
Station ID |
Description |
||
|
Cooling Water Intakes |
|
||
|
M5B |
Swire / Government Headquarters/
Tamar Development/ MTRCL and HSBC Headquarters |
||
|
Culverts (Reference Station) |
|
||
|
Culvert J |
Culvert J
Outfall Location |
||
Remark 1: No action or limit level are not applicable to reference
station Culvert J.
Remark 2: Turbidity measurement are reported as reference.
4.3.3
The action and limit level exceedance of water quality monitoring
are summarized in Table 4.6.
Table 4.6 Summary
of Water Quality Monitoring exceedance in the reporting
period
|
Station ID |
Monitoring period |
Mid-flood |
Mid-ebb |
||||||
|
DO |
SS |
DO |
SS |
||||||
|
AL |
LL |
AL |
LL |
AL |
LL |
AL |
LL |
||
|
M5B |
2014 |
1 |
0 |
3 |
2 |
0 |
0 |
0 |
0 |
|
2015 |
4 |
1 |
5 |
1 |
8 |
0 |
1 |
0 |
|
|
2016 |
9 |
0 |
6 |
2 |
9 |
0 |
1 |
0 |
|
|
2017 |
5 |
1 |
2 |
5 |
8 |
0 |
3 |
0 |
|
|
2018 |
6 |
0 |
7 |
3 |
5 |
0 |
1 |
1 |
|
|
2019 |
0 |
0 |
4 |
0 |
0 |
0 |
1 |
1 |
|
|
Total |
25 |
2 |
27 |
13 |
30 |
0 |
7 |
2 |
|
4.3.4 The major marine construction
activities involved culvert diversion and seawall modification in 2014.
In general,
the monitoring result indicated that a decreasing DO level during wet season
from April to September in relate to increased temperature cause possibly
enhanced DO consumption.
Discharge
from Culvert J outfall location could potential affect the water quality
monitoring result recorded at M5B.
Total 1
action level DO exceedance, 3 action level SS exceedances and 2 limit level SS
exceedances were recorded in 2014. After the investigation, the exceedances
were concluded as non-Project related and contributed by nearby culvert
discharge.
4.3.5
The
major marine construction activities involved seawall modification in 2015.
In
general, the monitoring result indicated that a decreasing DO level during wet
season from April to September in relate to increased temperature cause
possibly enhanced DO consumption.
Discharge
from Culvert J outfall location could potential affect the water quality
monitoring result recorded at M5B.
Total 12
action level DO exceedances, 1 limit level DO exceedance, 6 action level SS
exceedances and 1 limit level SS exceedance were recorded in 2015. After the
investigation, the exceedance were concluded as non-Project related and
contributed by nearby culvert discharge.
4.3.6 The major marine construction
activities involved seawall modification in 2016.
In
general, the monitoring result indicated that a decreasing DO level during wet
season from April to September in relate to increased temperature cause
possibly enhanced DO consumption.
Discharge
from Culvert J outfall location could potential affect the water quality
monitoring result recorded at M5B.
Total 18
action level DO exceedances, 7 action level SS exceedances and 2 limit level SS
exceedances were recorded in 2016. After the investigation, the exceedance were
concluded as non-Project related and contributed by nearby culvert discharge.
4.3.7
The
major marine construction activities involved seabed trimming in 2017.
In
general, the monitoring result indicated that a decreasing DO level during wet
season from April to September in relate to increased temperature cause
possibly enhanced DO consumption.
Discharge
from Culvert J outfall location could potential affect the water quality
monitoring result recorded at M5B.
Total 13
action level DO exceedances, 1 limit level DO exceedance, 5 action level SS
exceedances and 5 limit level SS exceedances were recorded in 2017. After the
investigation, the exceedance were concluded as non-Project related and
contributed by nearby culvert discharge.
4.3.8 The major marine construction
activities involved seabed trimming and seawall reinstatement in 2018.
In
general, the monitoring result indicated that a decreasing DO level during wet
season from April to September in relate to increased temperature cause
possibly enhanced DO consumption.
Discharge
from Culvert J outfall location could potential affect the water quality
monitoring result recorded at M5B.
Total 11
action level DO exceedances, 8 action level SS exceedances and 4 limit level SS
exceedances were recorded in 2018. After the investigation, the exceedance were
concluded as non-Project related and contributed by nearby culvert discharge.
4.3.9
The
major marine construction activities involved seawall reinstatement in 2019.
In
general, the monitoring result indicated that a decreasing DO level during wet
season from April to September in relate to increased temperature cause
possibly enhanced DO consumption.
Discharge
from Culvert J outfall location could potential affect the water quality
monitoring result recorded at M5B.
Total 5
action level SS exceedances and 1 limit level SS exceedance were recorded in
2019. After the investigation, the exceedance were concluded as non-Project
related and contributed by nearby culvert discharge.
4.3.10
As
confirmed by WDII RSS, the marine works associated was completed on 18 July 2019.
The water quality monitoring at M5B and Culvert J was temporarily suspended
from 23 August 2019 onward after completion of 4-weeks post-construction
monitoring from 18 July 2019 to 15 August 2019 and agreed with IEC.
4.3.11
Considered
that the marine works under Contractor HK/2012/08 was completed on 18 July
2019, the average DO and SS at M5B from the period of 1 June 2019 to 23 August
2019 (include the 4-weeks post-construction period) would be compared with
baseline level to demonstrate the narrow down of monitoring exceedances due to
construction activities and the return of ambient environmental conditions.
4.3.12
The
comparison of baseline level and average level from 1 June to 23 August 2019 at
monitoring station M5B are summarized in Table 4.7.
Table 4.7 Comparison
of DO and SS
|
Monitoring Location |
Tidal Condition |
Baseline Level1 |
Average level |
||
|
DO |
SS |
DO |
SS |
||
|
Unit: mg/L |
|||||
|
M5B |
Mid-Flood |
5.48 |
3 |
5.89 |
7 |
|
Mid-Ebb |
5.52 |
7 |
6.29 |
6 |
|
Remark 1: The DO and SS
baseline level for M5B shall refer to Water Quality Monitoring Station - M5 in
Baseline Environmental Monitoring Report for CRIII.
4.3.13 Comparing the DO baseline level with the average level from the period
of 1 June 2019 to 23 August 2019, it shows that the DO level returned to
baseline condition during both flood and ebb tide.
4.3.14 Comparing the SS baseline level with the average level from the period
of 1 June 2019 to 23 August 2019, it shows that the SS level during flood tide
was slightly higher than baseline level while SS level during ebb tide returned
to baseline condition.
4.3.15
The EPD routine
monitoring data at nearby station Victoria Harbour VM6 between August and
October 2019 was shown in Table 4.8. The average level of the suspended solid
between August and October 2019 at VM6 was 7.5mg/L, which was similar with that
at M5B (7mg/L). Therefore, natural variation of water quality was expected and
it was considered that the water quality was generally returned to baseline
condition.
Table 4.8
EPD Routine Monitoring Data at Victoria Harbour (VM6) – Suspended Solid
|
Date |
Suspended Solid (mg/L) |
Depth Code |
|
03/06/2019 |
1.7 |
Surface Water |
|
03/06/2019 |
2.9 |
Middle Water |
|
03/06/2019 |
3.2 |
Bottom Water |
|
25/07/2019 |
14 |
Surface Water |
|
25/07/2019 |
10 |
Middle Water |
|
25/07/2019 |
15 |
Bottom Water |
|
08/08/2019 |
2.9 |
Surface Water |
|
08/08/2019 |
4.2 |
Middle Water |
|
08/08/2019 |
14 |
Bottom Water |
4.3.16
Details
of graphical presentation of water quality monitoring result can referred to Appendix
4.3.
4.3.17 The notification of exceedance can be referred to Appendix
5.2
4.4
Construction Waste Summary
4.4.1 Inert
C&D waste and Non-inert C&D wastes were disposed during the
construction period of the Project. Details of the waste flow table are
summarized in Table 4.9.
Table 4.9 Details of
Waste Disposal
|
Waste
Type |
Cumulative amount of waste generated |
Disposal
/ Dumping Grounds |
|
Inert C&D materials disposed, m3 |
8,005 51,779 |
TM38 TKO137 |
|
Inert C&D materials recycled, m3 |
NIL |
NIL |
|
Non-inert C&D materials disposed, m3 |
1,925 |
SENT Landfill |
|
Non-inert C&D materials recycled, m3 |
NIL |
NIL |
|
Chemical waste disposed, kg |
NIL |
NIL |
|
Marine Sediment (Type 1 – Open Sea Disposal), m3 |
NIL |
South of Cheung Chau |
|
Marine Sediment (Type 2) , m3 |
NIL |
South of The Brothers |
4.5
Landscape and Visual
4.5.1 During the
monitoring and auditing with regard to landscaping works, tree protection and
preservation measures and implementation of temporary landscape treatments were
implemented during the construction period. The observations and
recommendations made during the audit sessions had been summarized in each of
the Monthly EM&A Report.
4.5.2
According to EM&A manual clause 6.2.2, landscape contractor shall
provide 12 months
maintenance on the landscaping works. The landscape maintenance works were monitored
through quarterly landscape maintenance inspection by ET as agreed with IEC on
01 November 2019, email record is shown in Appendix 4.4.
4.5.3
Contract HY/2009/18 is responsible for the landscape works under CRIII
area as indicated in Figure 4.1. The maintenance
works were completed on 01 November 2018 as showed in Appendix 4.5. The date of quarterly monitoring for 12 months landscape maintenance is summarized in Table 4.10.
Table 4.10 Monitoring Summary for HY/2009/18 in Landscape Maintenance Period
|
NO. |
Date |
|
1st
Quarter |
11, 14
and 18 December 2017 |
|
2nd
Quarter |
15, 19,
23 March 2018 |
|
3rd
Quarter |
11, 12,
25 June 2018 |
|
4th
Quarter |
1 |
4.5.4
Contract HK/2012/08 is responsible for the landscape works as indicated
in Figure 4.2. The
landscape works were completed on 21 October 2019 as showed
in Appendix 4.5. The date of quarterly monitoring for 12
months landscape maintenance is summarized in Table 4.11.
Table 4.11 Monitoring Summary for
HK/2012/08 in Landscape Maintenance Period
|
NO. |
Date |
|
1st
Quarter |
21
November 2019 |
|
2nd
Quarter |
20
February 2020 |
|
3rd
Quarter |
25 May
2020 |
|
4th
Quarter |
21
August 2020 |
4.5.5 Tree and
shrub planting to road corridor were established to mitigate visual impact of the
operation of primary and district distributor roads. Quarterly Landscape
Monitoring for 12-month Maintenance Period was completed and no follow-up
action required by Contractor.
4.5.6
In general, the soft landscape was maintained
in good conditions during the quarterly monitoring and had been handed over to
maintenance party (LCSD).
5 REVIEW ON ENVIRONMENTAL
IMPLEMENTATION AND COMPLIANCE
5.0.1 The Event
Action Plan for construction noise, air and water quality are presented in Appendix 5.1.
5.1
Noise
Monitoring
5.1.1. No project related exceedances were recorded
during the construction period. No remedial action was therefore required.
5.2
Air Quality Monitoring
5.2.1 No project
related exceedances were recorded during the construction period. No remedial
action was therefore required.
5.3
Water Quality Monitoring
5.3.1
No project
related exceedances were recorded during the construction period. No remedial
action was therefore required.
5.4
Site Implementation and
Compliance Audit
5.4.1 The
observations and recommendations made in each individual site audit had been
rectified and followed. No non-compliance from the site audits was recorded
throughout the monitoring programme.
6 summary of complaints,
notification of summons and prosecution
6.0.1 Total five environmental
complaints were received throughout the reporting period. All complaints case
were closed.
6.0.2 The details of cumulative
complaint log and updated summary of complaints are presented in Appendix 6.1
6.0.3 No
notification of summons or prosecution was received throughout the monitoring
programme. Cumulative statistic on complaints and successful prosecutions are
summarized in Table 6.1 and Table 6.2 respectively.
Table 6.1 Cumulative
Statistics on Complaints
|
Reporting Period |
No. of Complaints |
|
May 2013 – October |
5 |
Table 6.2 Cumulative
Statistics on Successful Prosecutions
|
Environmental
Parameters |
Cumulative No.
Brought Forward |
No. of Successful
Prosecutions this month (Offence Date) |
Cumulative No.
Project-to-Date |
|
Air |
0 |
0 |
0 |
|
Noise |
0 |
0 |
0 |
|
Water |
0 |
0 |
0 |
|
Waste |
0 |
0 |
0 |
|
Total |
0 |
0 |
0 |
7 review on EIA
Predictions, EIA process, monitoring methodlogy, EM&a programme and
environmental acceptability
7.1
Review on the EIA predictions
and EIA Process
Construction Noise
7.1.1.
Referring to AEIAR-040/2001 Section 7.7.1,
EIA predicted that with the provision of noise mitigation measures in the form
of limiting equipment sound power levels (i.e. use of quiet equipment) and
movable noise barriers (in the form of purpose built site hoarding) will
effectively mitigate against high noise levels, particularly at the Central
Barracks and City Hall. Although noise
levels after mitigation slightly exceed this 75dB(A) guideline, all affected
buildings are, however, provided with air-conditioning and therefore adverse
noise impact is not expected at the indoor areas of these buildings.
7.1.2.
During the construction period of the
Project, the noise mitigation measures as recommended in the EIA report were
generally implemented. No project related exceedance was recorded during the
reporting period. In general, no cumulative construction noise impact was
recorded with concurrent project in place within the area with mitigation
measures in place.
7.1.3.
Compare
with EIA prediction and EM&A monitoring result, the discrepancy may related
to the improvement of construction method and result in lower noise level
recorded during the EM&A monitoring period.
Construction Air Quality
7.1.4.
Referring to AEIAR-040/2001 Section 9.8.2,
the EIA modelling results showed that with the implementation of practicable
mitigation measures, dust levels at sensitive receivers would comply with the
1-hour average total suspended particulates (TSP) guideline and 24-hour average
AQOs (Air Quality Objectives effective from 1987 to 2013).
7.1.5.
During the construction period of the
Project, the dust mitigation measures as recommended in the EIA report during
marine and land based construction activities were generally implemented. No
project related exceedance was recorded during the reporting period. In
general, no cumulative construction airnoise
impact was recorded with concurrent project in place within the area with
mitigation measures in place.
7.1.6.
Compare
with EIA prediction and EM&A monitoring result, the EM&A result
generally be the same as EIA prediction.
Water Quality
7.1.7.
Referring to AEIAR-040/2001 Section
10.10.1.5, the EIA
model results indicated that for all the water quality parameters simulated,
there was no obvious deterioration in water quality in any local area of the
proposed reclamation. It is therefore
concluded that the intermediate layout of the proposed reclamation would not
result in any significant deterioration in water quality compared to present
day conditions. Model results also predicted that current expedient connections
would not generate water quality problems in relation to the proposed
reclamation.
7.1.8.
During the construction period of the
Project, the
water quality mitigation measures as recommended in the EIA report were
generally implemented. No project related exceedance was recorded during the
reporting period. Variation in water quality parameters were mainly influenced
by environmental factors such as culvert discharge and natural variation in
water quality. In addition, based on the
post construction water quality monitoring, it was confirmed that there was no
deterioration in water quality after completion of marine construction works.
In general, no cumulative construction waternoise
impact was recorded with concurrent project in place within the area with
mitigation measures in place.
7.1.9.
Compare
with EIA prediction and EM&A monitoring result, the EM&A result
generally be the same as EIA prediction.
Landscape and Visual
7.1.10.
With
the implementation of site mitigation measures during construction period, no
adverse environmental impact on landscape and visual aspect was identified
during regular site inspection throughout the course of the construction work.
7.1.11.
Quarterly
Landscape Monitoring for 12-month Maintenance Period was completed and no
follow-up action required by Contractor.
EIA Process
7.1.12.
During
the EIA Process, sufficient modeling data, monitoring data or survey result
shall be obtained in order to predict the associated environmental impact
contributed by the Project in different scenarios. Public concern and comment
shall also be addressed thought out the EIA process. During the period between
EIA process and Construction phase of the Project, the construction method,
technology as well as equipment would be improved. As such, the discrepancy
similar to Section 7.1.3 mentioned would likely to occur. As such,
the discrepancy similar to Section 7.1.3 mentioned would likely to occur. Despite
discrepancy of EIA prediction and EM&A monitoring results may occur, the
EIA process could still predicted the associated environmental impact
contributed by the Project in the worst case scenarios.
7.3
Review on Monitoring
Methodology
7.3.1.
In general,
the environmental monitoring methodology could monitoring the associated
environmental impact as well as the performance and effectiveness of
environmental mitigation measure implemented throughout the construction
period.
7.4
Review on EM&A Programme
7.4.1. The
Contractor generally implemented the mitigation measures as recommended in the
EIA report to alleviate for any potential environmental impacts to the
surroundings. No exceedances related to the Project works was recorded. Despite
environmental complaints were received during the construction period, remedial
and preventative measures were implemented in order to address public concern
and all the complaint case were closed. In general, it could be concluded that
no adverse environmental impact was caused to the surrounding environment and
sensitive receivers. The mitigation measures recommended are therefore
considered to be effective and efficient in terms of overall environmental
impact control throughout the construction period.
7.4.2. As
evidenced by the no project related exceedances was received throughout the
monitoring programme, the overall EM&A programme was considered to be
effective in overall environmental impact control. No particular modification
to the EM&A programme was considered necessary.
7.5
Review on Environmental
Acceptability of the Project
7.5.1.
Throughout the construction period,
occasionally exceedances for air quality, noise and water quality were
recorded. None of the exceedances were considered as Project related. This indicated
that the construction works of the Project in general comply with the relevant
environmental requirement and environmentally acceptable.
8 Conclusion
8.0.1.
The construction phase of the Project was
substantially completed in October 2019. No critical environmental deficiency
and no project related exceedances were identified throughout the reporting
period. All complaint cases received were closed and no summons and prosecution
were received throughout the reporting period. This report summarizes the
monitoring findings throughout the construction period programme.
8.0.2.
Monitoring works had been undertaken at two air
quality monitoring stations, one continuous noise monitoring station and two
water quality monitoring stations for the EM&A programme. All exceedance
recorded were concluded as non-Project related. All environmental monitoring
parameter were generally return to ambient level.
8.0.3.
The EM&A programme was carried out in
accordance with the EM&A Manual requirements, minor alternations to the programme
proposed were made in response to change of circumstances and site condition.
8.0.4.
Environmental audit inspection were conducted by
the Environmental Team and the Independent Environmental Checker throughout the
construction period to ensure the proper implementation of site mitigation
measures during construction period of the Project. The Contractor have
rectified for site observations and recommendations made during the audit
sessions and no cumulative environmental impact was identified during the construction
period of the Project. No site audit non-compliance was recorded throughout the
construction period of the Project.
8.0.5.
As
evidenced by the no project related exceedances was received throughout the
construction period of the Project, the implementation of EM&A programme was
considered effective in overall environmental impact control.