Contents
Page
EXECUTIVE SUMMARY i
1 INTRODUCTION AND PROJECT INFORMATION 1
1.1 Background.............................................................................................................. 1
1.2 Construction
Programme and Activities.................................................................. 1
1.3 Project
Organisation.............................................................................................. 32
1.4 Purpose of the
Report.............................................................................................. 3
2 SUMMARY OF EM&A REQUIREMENTS 3
2.1 Environmental Impact Hypothesis under Monitoring.............................................. 3
2.2 Monitoring
Requirements....................................................................................... 43
2.3 Environmental
Mitigation Measures...................................................................... 44
3 SUMMARY OF EM&A MONITORING DATA 5
3.1 Monitoring Data........................................................................................................ 5
3.2 Summary of
Monitoring Exceedances.................................................................... 5
4 ENVIRONMENTAL NON-CONFORMANCE 76
4.1 Summary of
Environmental Non-Compliance...................................................... 76
4.2 Summary of
Environmental Complaints................................................................. 7
4.3 Summary of
Environmental Summon and Successful Prosecutions.................... 7
5 REVIEW OF THE VALIDITY OF EIA
PREDICTIONS 7
6 REVIEW OF EM&A PROGRAMME 7
7 CONCLUSIONS 7
Table 1.1 Contact
Information of Key Personnel
Table 2.1 Monitoring
Parameter
Table 3.1 Summary
of Monitoring Data in the Reporting Period
Table 3.2 Summary
of Exceedance Events in the Reporting Period
List of Figures
Figure 1 Demarcation of Entrusted
Portion of Widening of Tolo Highway/Fanling Highway between Island House Interchange and Fanling ¡V Stage 2
Figure 2 Environmental Monitoring
Locations
List of Appendices
Appendix A Construction
Programme
Appendix B Project Organization Structure
Appendix C Summary of Event and Action Plan
Appendix D Implementation Schedule of Environmental
Mitigation Measures (EMIS)
Appendix E Summary of Meteorological Condition
Extracted from Hong Kong Observatory
Appendix F Environmental Monitoring Data for Air,
Noise and Water Quality
Appendix G Statistics on Complaints, Notifications
of Summons and Successful Prosecutions
This report documents the findings of EM&A works conducted during
the period between November 20156 and October 20167.
The impact stage EM&A programme for the Project includes air quality,
noise and water quality monitoring.
The EM&A programme was carried out by the
ET in accordance with the EM&A Manual requirements. It is concluded from the environmental
monitoring and audit works that adequate environmental mitigation measures have
been implemented by the civil works contractors where appropriate in the
reporting period.
In the reporting period, 75 exceedance
events were recorded and the exceedances were concluded
not related to the Project. No necessary
remedial actions have been taken.
No environmental non-compliance was noted. No environmental complaint was
received. No environmental related
prosecution or notification of summons was received in the reporting period.
The box culvert works have been partially completed
by the end of March 2014 except the last construction activity, i.e.
installation of a base slab at Box Culvert ID4. The box culvert works had been
completed in March 2017. The 4-week post-construction water quality monitoring
at I5 was completed in 28 April 2017The box
culvert works have been partially completed by the end of March 2014
except the last construction activity, i.e. installation of a base slab at Box
Culvert ID4. Due to the loading
requirement of a fresh water main under the box culvert, installation of the
base slab at Box Culvert ID4 has been
scheduled to be commenced in December 2016. The 4-week post construction water
quality monitoring will be conducted after the installation of the base slab
finishes, hence the completion of the box culvert works. As such, impact monitoring for water
quality is anticipated to be resumed in December 2016 during the course of
remaining box culvert works.
1.1.1
The
Project is a Designated Project under the Environmental Impact Assessment
Ordinance (EIAO) (Cap. 499). An
Environmental Impact Assessment (EIA) Report together with an Environmental
Monitoring and Audit (EM&A) Manual were approved on 14 July 2000 (Register
Number: EIA-043/2000). The Project
is governed by an Environmental Permit (EP) (EP-324/2008) which was granted on
23 December 2008. A variation of EP
(VEP) was applied and the VEP (EP-324/2008/A) was subsequently granted on 31 January
2012. An additional VEP has been
applied on 24 February 2014 and the VEP (EP-324/2008/B) was subsequently
granted on 17 March 2014. Furthermore, an additional VEP has been applied on 9 March 2015 and the VEP
(EP-324/2008/C) was subsequently granted on 27 March 2015. The currentprevious
VEP (EP-324/2008/D) was granted on 27 August 2015. The current
VEP (EP-324/2008/E) was granted on 26 January 2017.
1.1.2
Chun
Wo Construction &
Engineering Co Ltd (Chun Wo) was commissioned by the
Civil Engineering and Development Department (CEDD) as the Civil Contractor for
the Entrusted Portion of Widening of Tolo Highway/Fanling Highway between Island House Interchange and Fanling Stage 2.
Meinhardt Infrastructure & Environment Ltd (MIEL) has been appointed
by Chun Wo as the
Environmental Team (ET) to fulfill the corresponding
EM&A requirements pursuant to Environmental Permit No. EP-324/2008/D in
accordance with the Updated EM&A Manual (dated October 2013) for Widening
of Tolo Highway/Fanling
Highway between Island House Interchange and Fanling
Stage 2. The EM&A programme
commenced in 5 November 2013.
1.1.3
Figure 1 shows the works areas for the
Entrusted Portion of Widening of Tolo Highway/Fanling Highway between Island House Interchange and Fanling Stage 2.
1.2.1
The
master construction programme for the entire construction period is presented
in Appendix A. The major
construction activities undertaken in the reporting period are summarized
below:
¡P
Abutment Construction;
¡P
Boundary wall construction for DSD pumping station;
¡P
Construction of Boundary Wall for DSD Pumping
Station;
¡P
Construction of Profile Barrier on Viaduct deck;
¡P
Construction of Remaining Base Slab of Box Culvert
ID4;
¡P
Demolition of Existing Vehicular Bridge;
¡P
Drainage Work;
¡P
Existing Kiu Tau Vehicular Bridge demolition;
¡P
Extended Podium Construction near Bored Pile Wall;
¡P
Footbridge Construction;
¡P
Gabion Wall Construction;
¡P
Installation of Noise Barrier Steel Column &
Panel;
¡P
Installation Works of Mini-pile;
¡P
Noise Barrier Construction;
¡P
Parapet Installation;
¡P
Pier / Pier Table Construction;
¡P
Pile Cap Works;
¡P
Pipe Jacking works for DN2200 Water Mains;
¡P
Pit Construction for Heading Works;
¡P
Planter Wall Construction;
¡P
Portal Construction;
¡P
Pre-drilling for Noise Barrier.
¡P
Remaining Works on New Kiu Tau Footbridge;
¡P
Retaining Wall Construction;
¡P
Roadworks;
¡P
Roundabout Modification Works.
¡P
Sewer Works;
¡P
Storm Drains Laying;
¡P
Stressing of External Tendon;
¡P
Trenchless excavation.
¡P
Utilities Duct Laying;
¡P
Viaduct Segment Erection;
¡P
Water Main Laying; and
¡P
Cable Detection and Trial TrenchesCable Detection and Trial Trenches;
¡P
Decking Construction for Bridge E;
¡P
Demolition of Existing Vehicular Bridge;
¡P
E & M Work for New Valve Control &
Telemetry House;
¡P
Erection of Temporary support for demolition of
J-bridge;
¡P
Filling Works at Tong Hang East;
¡P
Footbridge Construction;
¡P
FRP Lining on Existing Water Main;
¡P
Installation of Stone Cladding;
¡P
Noise Barrier Construction;
¡P
Pier / Pier Table Construction;
¡P
Pile Cap Works;
¡P
Piling Works;
¡P
Piling Works for Viaduct ;
¡P
Piling Works for Noise Barrier;
¡P
Portal Beam Construction;
¡P
Pre-drilling;
¡P
Pre-drilling works and Piling Works for Noise
Barrier;
¡P
Pre-drilling Works and Piling Works for
Viaduct ;
¡P
Road Works at Fanling Highway;
¡P
Retaining Wall Construction ;
¡P
Road Works;
¡P
Sewer Works ;
¡P
Slope Works;
¡P
Socket H-pile Installation ;
¡P
Steel Posts and Panels Installation of Noise
Barrier;
¡P
Storm Drains Laying;
¡P
Tree Felling Works;
¡P
Utilities Duct Laying;
¡P
Viaduct Segment Erection;
¡P
Water Main Connection Works;
¡P
Water Main Laying; and
¡P
Waterworks.
1.3.1
The
project organization structure is shown in Appendix B. The key personnel contact names and
numbers for the Project, together with the general enquiry hotline, are
summarised in Table 1.1Table 1.1.
Table 1.1 Contact Information of Key Personnel
Party |
Role |
Position |
Name |
Tele-phone |
Fax |
AECOM |
Engineer¡¦s
Representative |
Senior
Resident Engineer |
Mr. Alan Lee |
2171 3303 |
2171 3498 |
Resident Engineer (Environmental) |
Mr. |
2171 3350 |
|||
Mott MacDonald |
Independent Environmental Checker (IEC) |
IEC |
Mr. Steven Tang |
2828 5920 |
2827 1823 |
Chun Wo |
Contractor |
Site Agent |
Mr. Daniel Ho |
2638 6144 |
2638 7077 |
Environmental Officer |
Ms. Tiffany
Tsang |
2638 61 |
|
||
Meinhardt |
Environmental Team (ET) |
ET Leader |
Mr. Fredrick Leong |
2859 1739 |
2540 1580 |
Enquiry Hotline |
General Enquiry |
-- |
Ms Helena Mak |
6355 1731 |
-- |
1.4.1
This
is the Annual EM&A Review Report which summaries
the impact monitoring results and audit findings for the Project during the
reporting period between November 20165 and October 20167.
2.1.1
The
EIA Report concluded that with proper mitigation measures implemented, fugitive
dust emission during construction phase would be controlled and will not exceed
the acceptable criteria.
2.1.2
For
construction noise, exceedances were predicted only
at 2 schools (SR41 Wong Shiu Chi Middle School and
SR45 HK Teacher¡¦s Association Secondary School) but they are out of the scope
of this EM&A Programme. Hence
the EIA did not anticipate any noise exceedances
during construction phase within the scope of this EM&A Programme.
2.1.3
For
water quality, it is also anticipated that with proper protection measures
being implemented, the water quality during construction phase would be locally
confined and controllable.
2.1.4
The
above criteria have been tested under this EM&A Programme during the
reporting period.
2.2.1
In
accordance with the Updated EM&A Manual, environmental parameters including
air quality, noise and water quality have been monitored. The specific parameters, monitoring
frequency and the respective Action and Limit Levels are given in Table
2.1Table 2.1 and the location of the monitoring
station is shown in the Figure 2.
Table 2.1 Monitoring Parameter
Parameter |
Unit |
Action
Level |
Limit Level |
Frequency |
Air Quality |
||||
1-hour
TSP |
mg/m3 |
292.7 |
500 |
Three times every 6 days |
24-hour
TSP |
mg/m3 |
170.3 |
260 |
Once every 6 days |
Construction Noise |
||||
Leq
30min |
dB(A) |
When
one documented valid complaint is received |
75 |
Once every Week |
Water Quality |
||||
Depth |
|
-- |
-- |
Three occasions per week |
Temperature |
¢XC |
-- |
-- |
Three occasions per week |
Salinity |
ppt |
-- |
-- |
Three occasions per week |
pH |
-- |
-- |
-- |
Three occasions per week |
DO |
mg/L |
6.7 |
4mg/L or 40% saturation at 15 degree Celsius |
Three occasions per week |
DO
Saturation |
% |
-- |
-- |
Three occasions per week |
Turbidity |
NTU |
81.9NTU
or 120% of upstream control station¡¦s Tby of the
same day |
91.9NTU or 130% of upstream control station¡¦s
Tby of the same day |
Three occasions per week |
SS |
mg/L |
42.6
mg/L or 120% of upstream control station¡¦s SS of the same day |
46.8 mg/L or 130% of upstream station¡¦s SS of
the same day and specific sensitive receiver water quality requirements |
Three occasions per week |
2.2.2
The
Event and Action Plan for the occurrence of non-compliance of the criteria of
the monitoring parameters is annexed in Appendix C.
1.1.1
The box culvert works have been partially completed
by the end of March 2014 except the last construction activity, i.e.
installation of a base slab at Box Culvert ID4. Due to the loading requirement of a
fresh water main under the box culvert, installation of the base slab at Box
Culvert ID4 has been scheduled to be commenced in December 2016. The 4-week post construction water
quality monitoring will be conducted after the installation of the base slab
finishes, hence the completion of the box culvert works. As such, impact monitoring for water
quality is anticipated to be resumed in December 2016 during the course of
remaining box culvert works.
2.3.1
Environmental mitigation measures have been
recommended in the EM&A Manual and is given in Appendix D. The implementation status for the reporting
period is also given in the Appendix.
3.1.1
Monitoring has been conducted in accordance with the
specification in the EM&A Manual in the reporting period. Summary of meteorological
condition for the reporting period have been extracted from Hong Kong
Observatory and
are given in Appendix E. Monitoring
data with graphical presentation for the reporting period have been given in Appendix
F. A summary on the monitoring
results has also been given in Table
3.1Table 3.1.
Table 3.1 Summary of Monitoring Data in the Reporting Period
Monitoring Location |
Minimum |
Maximum |
Average |
Air Quality |
|||
1-hour Total
Suspended Particulate |
|||
SR77 |
|
|
|
24-hour Total
Suspended Particulate |
|||
SR77 |
|
|
|
Construction Noise |
|||
SR77 |
|
|
|
Water Quality |
|||
DO |
|||
I5 |
|
|
|
C3a |
5.1 |
|
|
C3b |
|
9. |
|
Turbidity |
|||
I5 |
|
|
|
C3a |
|
|
|
C3b |
|
|
|
SS |
|||
I5 |
|
|
|
C3a |
|
|
|
C3b |
|
|
|
3.2.1
The
number of exceedance events recorded in the reporting
period is summarized in Table
3.2Table 3.2.
3.2.2
Investigation
for the exceedance event in the reporting period has been
completed and the exceedance was concluded not related
to the Project. No necessary
remedial actions have been taken. The
respective investigation report has been presented in the respective Monthly
EM&A Report.
Table 3.2 Summary of Exceedance Events in the Reporting Period
Parameter |
|
Number of Exceedance
Events |
Number of Project Related Exceedance Events |
Air Quality |
|||
1-hour Total
Suspended Particulates |
Action Level |
0 |
0 |
Limit
Level |
0 |
0 |
|
24-hour Total
Suspended Particulates |
Action Level |
|
0 |
Limit
Level |
0 |
0 |
|
Construction Noise |
|||
Leq 30min |
Action Level |
0 |
0 |
Limit
Level |
|
0 |
|
Water Quality |
|||
DO |
Action Level |
|
0 |
Limit
Level |
0 |
0 |
|
Turbidity |
Action
Level |
0 |
0 |
Limit
Level |
|
0 |
|
SS |
Action
Level |
0 |
0 |
Limit
Level |
|
0 |
3.2.3
The
Contractor has been reminded to strengthen the mitigation measures including:
¡P
All vehicles should be washed to remove any dusty
materials before leaving the construction site.
¡P
Ensure all vehicles are properly washed to remove mud
and debris before leaving the site.
¡P
Stockpiling shall be covered to avoid dust
generation
¡P
Good housekeeping should be maintained and stagnant
water should be removed from secondary containment regularly.
¡P
Provide proper chemical and chemical waste
management.
¡P
A spill response procedure shall be in place and absorption
material available for minor spillages.
¡P
Ensure all chemical drums on site to be placed on
drip tray
¡P
Refuse shall be cleared frequently to provide
sufficient waste skip for workers and keep site work area clean
¡P
Housekeeping shall be enhanced and refuse shall be
collected regularly
Water Quality
¡P
Surface run-off, rainwater and waste water from
construction site discharged into appropriate drains via adequately designed
sand/ silk removal facilities (e.g. sand traps, sile traps and sedimentation
basins) and pH adjusted before discharge.
¡P
Ensure the
de-silting facilities are cleared frequently to prevent direct discharge of
construction site runoff
¡P
Implement
sufficient mitigation measures to avoid runoff leakage from road works areas
and divert site effluent to wastewater treatment facilities
¡P
Silt removal facilities, channels and manholes
should be well inspected and maintained regularly;
¡P
All plant and equipment should be well maintained
and in good operating condition to avoid black smoke emission;
¡P
Water treatment facilities should be properly
maintained and avoid untreated water entering storm drain;
¡P
Proper drainage channels/bunds should be provided
at the site boundaries to collect/intercept the surface run-off from works
areas;
¡P
Water spraying or covering of tarpaulin should be
properly implemented whenever necessary for the unpaved roads, access roads and
construction areas;
¡P
All vehicles should be washed to remove any dusty
materials before leaving the construction site;
¡P
Vessels and equipment operating should be checked
regularly and properly maintained;
¡P
Secondary containment, like drip trays and/or
bundings, should be provided for all chemical containers to retain any
oil/chemical waste leakage within the construction site;
¡P
Chemical waste should be stored, handled and
disposed of properly; and
¡P
On site segregation should be implemented as far as
practicable for reuse and recycle.
4.1.1
No
environmental non-compliance was recorded in the reporting period.
4.2.1
No
environmental complaint was received in the reporting period.
4.3.1
No
environmental related prosecution or notification of summons was received in
the reporting period. The cumulative
statistics are provided in is provided in Appendix G.
5.1.1
The
EIA report predicted that with proper implementation of the mitigation measures
for air, noise and water quality, environmental impact would be locally
confined and controllable. During
the reporting period, 75
exceedances were recorded and the exceedances
were concluded not related to the Project.
Hence, it is considered that the EIA predictions is
valid for the reporting period.
6.1.1
The
EM&A programme was considered successfully and adequately conducted during
the course of the reporting period.
6.1.2
The box culvert works have
been partially completed by the end of March 2014 except the last construction
activity, i.e. installation of a base slab at Box Culvert ID4. The box
culvert works had been completed in March 2017. The 4-week post-construction
water quality monitoring at I5 was completed in 28 April 2017.Due to the loading requirement of a fresh water
main under the box culvert, installation of the base slab at Box Culvert ID4
has been scheduled to be commenced in December 2016. The 4-week post construction water
quality monitoring will be conducted after the
installation of the base slab finishes, hence the completion of the box culvert
works. As such, impact monitoring
for water quality is anticipated to be resumed in December 2016 during the
course of remaining box culvert works.
7.1.1
The
EM&A programme was carried out by the ET in
accordance with the EM&A Manual requirements. It is concluded from the
environmental monitoring and audit works that adequate environmental mitigation
measures have been implemented by the civil works contractors where appropriate
in the reporting period.
7.1.2
In
the reporting period, 57
exceedance events have been recorded and the exceedances were concluded not related to the Project. No necessary remedial actions have been
taken.
7.1.3
No
environmental non-compliances were noted. One
environmental complaint, which was concluded as unlikely due to the
construction works of this Project after investigations, was received. No
environmental related prosecution or notification of summons were received in
the reporting periodNo environmental
complaint was received in the reporting period.
7.1.4
The box culvert works have been partially completed
by the end of March 2014 except the last construction activity, i.e.
installation of a base slab at Box Culvert ID4. The box culvert works had been
completed in March 2017. The 4-week post-construction water quality monitoring
at I5 was completed in 28 April 2017.The box
culvert works have been partially completed by the end of March 2014 except the
last construction activity, i.e. installation of a base slab at Box Culvert
ID4. Due to the loading requirement
of a fresh water main under the box culvert, installation of the base slab at
Box Culvert ID4 has been scheduled to be commenced in December 2016. The 4-week post construction water
quality monitoring will be conducted after the installation of the base slab
finishes, hence the completion of the box culvert works. As such, impact monitoring for water
quality is anticipated to be resumed in December 2016 during the course of
remaining box culvert works.