Contents
Page
EXECUTIVE SUMMARY iii
1 INTRODUCTION AND PROJECT INFORMATION 1
1.1 Background.............................................................................................................. 1
1.2 Construction
Programme and Activities.................................................................. 1
1.3 Project
Organisation................................................................................................ 1
1.4 Purpose of the
Report.............................................................................................. 2
2 SUMMARY OF EM&A REQUIREMENTS 2
2.1 Monitoring
Requirements......................................................................................... 2
2.2 Environmental
Mitigation Measures........................................................................ 3
3 SUMMARY OF EM&A Monitoring Data 3
3.1 Monitoring Data........................................................................................................ 3
3.2 Summary of
Monitoring Exceedances.................................................................... 4
4 WASTE MANAGEMENT 5
5 ENVIRONMENTAL NON-CONFORMANCE 5
6 CONCLUSION, COMMENTS AND
RECOMMENDATIONS 5
Table 1.1 Contact
Information of Key Personnel
Table 2.1 Monitoring
Parameter
Table 3.1 Summary
of Monitoring Data in the Reporting Quarter
Table 3.2 Summary
of Exceedance Events in the Reporting Quarter
List of Figures
Figure 2 Environmental Monitoring
Locations
List of Appendices
Appendix A Construction Programme
Appendix B Project Organization Structure
Appendix C Implementation Schedule of Environmental Mitigation Measures
(EMIS)
Appendix D Meteorological Data Extracted from Hong Kong Observatory
Appendix E 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 in the
quarter between 6 November 2013 and 31 January 2014.
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 quarter.
In the reporting quarter, a total of 22 exceedance
events were recorded. Only 1 Limit
Level exceedance of Turbidity and 1 Limit Level exceedance of Suspended Solids were concluded to be related
to the project. Necessary remedial
actions have been taken.
No environmental non-compliance was noted. One environmental complaint, which
was concluded as an invalid complaint under this Project after investigations,
was received. No environmental related prosecution or notification of summons
was received. No changes to the
construction works which may affect the EM&A programme are recorded in the
reporting quarter.
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/A 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
construction programme is presented in Appendix A. The major construction activities
undertaken in the reporting quarter are summarized below:
·
Hoarding
and fencing erection, initial survey and base slab demolition;
·
Trial
Pit excavation
·
Site
clearance and tree felling;
·
Excavation
works and base slab demolition;
·
Pre-drilling
works, Bored pile wall construction and Catch Fan;
·
Box
culvert extension works – Flow diversion of existing stream, base and wall slab
construction;
·
Cable
detection and trail trenches;
·
Erection
of site office; and
·
Construction
of haul road and temporary soil platform for geotechnical 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 |
Telephone |
Fax |
|
AECOM |
Engineer’s
Representative |
Senior
Resident Engineer |
Mr. Alan Lee |
2472 7228 |
2472 0132 |
|
Resident Engineer (Environmental) |
Mr. |
2674 2273 |
-- |
||
|
Mott MacDonald |
Independent Environmental Checker (IEC) |
IEC |
Mr. Terence Kong |
2828 5919 |
2827 1823 |
|
Chun Wo |
Contractor |
Site Agent |
Mr. Daniel Ho |
2638 6144 |
2638 7077 |
|
Environmental
Officer |
Mr. |
2638 6115 |
|||
|
Environmental Officer |
Mr. Sam Lam |
2638 6147 |
|||
|
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 Quarterly EM&A Report which summaries the impact monitoring results
and audit findings for the Project during the reporting period of November 2013
to January 2014.
2.1.1
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 locations of the monitoring
and control stations are 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 |
°C |
-- |
-- |
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 |
2.2.1
Environmental
mitigation measures have been recommended in the EM&A Manual and are given
in Appendix C. The implementation
status for the reporting quarter is also given in the Appendix.
3.1.1
Monitoring has been conducted in accordance to the
specification in the EM&A Manual in the reporting quarter. Meteorological data for the reporting
quarter has been extracted from Hong Kong Observatory and are given in Appendix D. Monitoring Data with graphical
presentation for the reporting quarter have been given in Appendix E. A summary on the monitoring results has
also given in Table 3.1.
Table 3.1 Summary of Monitoring Data in the Reporting Quarter
|
Monitoring Location |
Minimum |
Maximum |
Average |
|
Air Quality |
|||
|
1 hour Total
Suspended Particulate |
|||
|
SR77 |
23.7mg/m3 |
358.6mg/m3 |
199.4mg/m3 |
|
24 hour Total
Suspended Particulate |
|||
|
SR77 |
83.0mg/m3 |
283.0mg/m3 |
172.0mg/m3 |
|
Construction Noise |
|||
|
SR77 |
57.8dB(A) |
73.5dB(A) |
66.3dB(A) |
|
Water Quality |
|||
|
DO |
|||
|
I5 |
4.4mg/L |
10.1mg/L |
8.0mg/L |
|
Baseline
Data |
6.6mg/L |
8.8mg/L
|
8.0mg/L |
|
30% disturbance due to human activity |
4.6mg/L |
6.2mg/L
|
5.6mg/L |
|
Turbidity |
|||
|
I5 |
6.3NTU |
48.7NTU |
22.2NTU |
|
Baseline
Data |
12.4NTU |
91.5NTU
|
26.1NTU |
|
30%
disturbance due to human activity |
16.1NTU |
118.9NTU
|
34.0NTU |
|
SS |
|||
|
I5 |
2mg/L |
31.5mg/lm
|
10.5mg/L |
|
Baseline
Data |
6.5mg/L |
46.5mg/L
|
16.4mg/L |
|
30%
disturbance due to human activity |
8.5mg/L |
60.5mg/L
|
21.3mg/L |
3.1.2
The
minimum recorded dissolved oxygen in the reporting
quarter is 4.4mg/L which is lower then the 30% disturbance of the minimum value
(4.6mg/L). However, respective
investigation has been conducted and concluded the exceedance would not be
project related.
3.1.3
The
other recorded water quality monitoring levels during the reporting quarter
were not exceed the 30% disturbance over the baseline
level for quarterly average.
3.2.1
The
number of exceedances event recorded in the reporting
quarter is summarized in Table 3.2.
3.2.2
Investigations
for the exceedances events in the reporting quarter
have been completed. 1 Limit Level exceedance of Turbidity and 1 Limit Level exceedance of Suspended Solids are concluded to be related
to the project. Other exceedances were considered not related to the construction
works. The respective investigation
reports have been presented in the respective Monthly EM&A Reports.
Table 3.2 Summary of Exceedance Events in the Reporting Quarter
|
Parameter |
|
Number of Exceedances
Events |
Number of Project Related Exceedance Events |
|
Air Quality |
|||
|
1 hour Total
Suspended Particulate |
Action Level |
0 |
0 |
|
Limit
Level |
0 |
0 |
|
|
24 hour Total Suspended
Particulate |
Action Level |
10 |
0 |
|
Limit
Level |
3 |
0 |
|
|
Construction Noise |
|||
|
Leq 30min |
Action Level |
0 |
0 |
|
Limit
Level |
0 |
0 |
|
|
Water Quality |
|||
|
DO |
Action Level |
2 |
0 |
|
Limit
Level |
0 |
0 |
|
|
Turbidity |
Action Level |
1 |
0 |
|
Limit
Level |
1 |
1 |
|
|
SS |
Action Level |
1 |
0 |
|
Limit
Level |
2 |
1 |
|
3.2.3
Contractor
has been reminded to strengthen the mitigation measures including:
·
cover
of exposed slopes near the river,
·
cover
of open stockpile of construction materials,
·
adequate
watering along the haul road to mitigate the construction dust impact,
·
building
a river diversion structure at the river channel to protect the river from
potential site runoff,
·
fill
up the leakage and strengthen the river diversion works to avoid future
leakage, and
·
pay attention on accidental site runoff, including
construction of additional protection structure if necessary, to minimize the
risk of site runoff.
4.1.1
The
Contractor has registered as a chemical waste producer of the Project. The C&D materials and waste sorting
were carried out on-site. Receptacles
were provided for general refuse collection.
4.1.2
During
the reporting quarter, a total of 2021m3 of excavated material has
been generated. 1427m3
of inert C&D materials was disposed of at public fill to Tuen Mun Area 38, while 503m3
of inert C&D materials were reused on site. 220kg of general refuse was disposed of
at North East New Territories (NENT) Landfill. 10kg of plastics and no paper/cardboard
packaging, plastics and metals were collected by recycling contractor in the
reporting quarter. No chemical
waste was collected by licensed contractor in the reporting quarter. Details of the waste management data are
presented in Appendix F.
5.1.1
No
environmental non-compliance were recorded in the
reporting quarter. One environmental
complaint was received in the reporting quarter regarding water quality of Ma Wat River. Investigations
have been conducted and the complaint was considered as invalid under this
Project. No environmental related
prosecution or notification of summons was received in the reporting quarter. The summary for the non-compliance, complaints
and prosecutions is provided in Appendix G.
5.1.2
No
changes to the construction works which may affect the EM&A programme are
recorded in the reporting quarter.
6.1.1
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 quarter.
6.1.2
In
the reporting quarter, a total of 22 exceedance
events have been recorded. Only 1 Limit Level exceedance
of Turbidity and 1 Limit Level exceedance of
Suspended Solids were concluded to be related to the project. Necessary remedial
actions have been taken.
6.1.3
No
environmental non-compliances were noted. One environmental complaint, which
was concluded as an invalid complaint under this Project after investigations,
was received. No environmental related prosecution or notification
of summons were received. No
changes to the construction works which may affect the EM&A programme are
recorded in the reporting quarter.