Contents
Page
EXECUTIVE SUMMARY iii
1 INTRODUCTION AND PROJECT INFORMATION 12
1.1 Background............................................................................................................ 12
1.2 Construction
Programme and Activities................................................................ 12
1.3 Project
Organisation.............................................................................................. 32
1.4 Purpose of the
Report............................................................................................ 32
2 SUMMARY OF EM&A REQUIREMENTS 32
2.1 Environmental Impact Hypothesis under Monitoring............................................ 32
2.2 Monitoring
Requirements....................................................................................... 42
2.3 Environmental
Mitigation Measures...................................................................... 52
3 SUMMARY OF EM&A MONITORING DATA 52
3.1 Monitoring Data...................................................................................................... 52
3.2 Summary of
Monitoring Exceedances.................................................................. 52
4 ENVIRONMENTAL NON-CONFORMANCE 62
4.1 Summary of Environmental Non-Compliance...................................................... 62
4.2 Summary of Environmental Complaints............................................................... 62
4.3 Summary of Environmental Summon and
Successful Prosecutions.................. 72
5 REVIEW OF THE VALIDITY OF EIA
PREDICTIONS 72
6 REVIEW OF EM&A PROGRAMME 72
7 CONCLUSIONS 72
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 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 Meteorological Data 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 2014 and October 2015.
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, only 1 exceedance
event was recorded and the exceedance was concluded
not related to the Project. No necessary
remedial actions have been taken.
No environmental non-compliance was 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 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. Due to the loading requirement
of a fresh water main under the box culvert, installation of the base slab at
Box Culvert ID4 has to be scheduled in November 2015 after the utilities
diversions were completed, and therefore the construction works were temporary
suspended. 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 November 2015 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 current VEP
(EP-324/2008/D) was granted on 27 August 2015.
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 Tree felling works;
¡P Abutment construction for Bridge E;
¡P Erection of temporary support at DSD nullah;
¡P Piling works;
¡P Piling works for Bridge E;
¡P Utilities duct laying;
¡P Socket H-pile installation;
¡P Road works at Fanling Highway;
¡P Traffic diversion for Fanling Highway;
¡P Retaining structure construction;
¡P Construction of valve control Telemetry House;
¡P Pre-drilling works;
¡P Pile cap works;
¡P Pier / Pier table construction;
¡P Noise barrier construction;
¡P Sewer pipes laying;
¡P Water pipes laying;
¡P Storm drains laying;
¡P Lagging wall and capping beam for bored pile wall;
¡P Filling Works at Tong Hang East;
¡P Catch fence erection;
¡P
Cable detection and trial trenches;
¡P Pile cap construction for Bridge E;
¡P ADMS installation;
¡P E & M work for new valve control & Telemetry House;
¡P Demolition of central divider at Fanling Highway;
¡P Viaduct segment erection;
¡P Socket H-pile load test;
¡P Sewer works at TWSRW;
¡P Diversion of DN600;
¡P Erection of temporary support at DSD nullah for Bridge E;
¡P Box culvert inlet structure;
¡P Portal beam construction;
¡P Decking construction for Bridge E;
¡P Construction of temporary steel ramp for Kiu Tau Footbridge; and
¡P Slope Works.
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 1.1.
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 |
Mr. |
2638 6181 |
|
||
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 2014 and October 2015.
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
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 2.1 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.
2.2.3 The box culvert works have been partially completed by the end of March 2014 except the last construction activity, which is the 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 to be scheduled in November 2015 after the utilities diversions were completed, and therefore the construction works are temporarily suspended. 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 November 2015 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. Meteorological data 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 3.1.
Table 3.1 Summary of Monitoring Data in the Reporting Period
Monitoring Location |
Minimum |
Maximum |
Average |
Air Quality |
|||
1-hour Total
Suspended Particulate |
|||
SR77 |
40.4mg/m3 |
211.2mg/m3 |
119.7mg/m3 |
24-hour Total
Suspended Particulate |
|||
SR77 |
42.1mg/m3 |
148.3mg/m3 |
89.8mg/m3 |
Construction Noise |
|||
SR77 |
62.0dB(A) |
76.5dB(A) |
69.2dB(A) |
3.2.1
The
number of exceedance events recorded in the reporting
period is summarized in Table 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 |
0 |
Limit
Level |
0 |
0 |
|
Construction Noise |
|||
Leq 30min |
Action Level |
0 |
0 |
Limit
Level |
1 |
0 |
3.2.3
The
Contractor has been reminded to strengthen the mitigation measures including:
¡P Water spraying or covering of tarpaulin should be properly implemented whenever necessary for the unpaved roads, access roads construction areas;
¡P All vehicles should be washed to remove any dusty materials before leaving the construction site;
¡P Wheel washing facilities should be properly maintained to ensure proper functioning;
¡P All types of wastes, both on land floating in the river stream, should be collected sorted properly, also be disposed timely properly. Refuse collection bins should be labelled properly;
¡P Provide proper chemical storage and chemical waste management;
¡P Water treatment facilities should be properly maintained avoid untreated water entering storm drain;
¡P Secondary containment should be provided for all powered mechanical equipment within the construction site;
¡P A spill response procedure shall be in place absorption material available for minor spillages;
¡P Good housekeeping should be maintained general refuse should be removed regularly;
¡P Plant equipment should be properly maintained to avoid emitting black smoke;
¡P Proper drainage channels/bunds should be provided at the site boundaries to collect/intercept the surface run-off from works areas
¡P Vessels and equipment operating should be checked regularly properly maintained;
¡P Secondary containment, like drip trays/or bundings, should be provided for all chemical containers to retain any oil/chemical waste leakage within the construction site; and
¡P Chemical waste should be stored, handled disposed of properly.
4.1.1
No
environmental non-compliance was recorded in the reporting period.
4.2.1
One
(1) environmental complaint was received in the reporting period regarding
water quality of Ng
Tung River. Investigation has been conducted and the
complaint was considered unlikely
due to the construction works of this Project.
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, only 1 exceedances was recorded and the exceedance was 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, which is the 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 to be scheduled in November 2015 after the utilities
diversions were completed, and therefore the construction works were temporarily
suspended. 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 November 2015 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, 1 exceedance event has been
recorded and the exceedance was 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 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.
Due to the loading requirement of a fresh water main under the box
culvert, installation of the base slab at Box Culvert ID4 has to be scheduled
in November 2015 after the utilities diversions were completed, and therefore
the construction works are temporarily suspended. 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 was not necessary in the reporting
period due to temporary suspension of the construction works and is anticipated
to be resumed in November 2015 during the course of remaining box culvert
works.