Contents
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 6
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 1 February 2014 to 30 April 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 9 exceedance
events were recorded. The exceedances were concluded not to be project related. 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 quarter.
The box culvert works has been partially completed by the end of March
2014 except the last construction activity, 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 to be carried out in November
2015 after the utilities diversions complete. The construction works are temporary
suspended until the utilities diversion works complete.
As such, water quality monitoring has been conducted for the first week
of April 2014 only to cover the temporary suspension of the construction
work. The 4-week post construction
water quality monitoring will be commenced after the installation of the base
slab finishes, hence the completion of the 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.
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/B in accordance with the Updated EM&A
Manual (dated March 2014) 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:
·
Cable
detection and trial trenches;
·
Tree
felling works;
·
Pre-drilling works and piling
works;
· Extension of box culvert ID04, ID05 and BC01;
· Bored pile and Bored pile wall construction;
· Construction of haul road and temporary soil platform for geotechnical works;
· Slope upgrading works;
· Noise barrier installation; and
· 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 1.1.
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 6181 |
|||
|
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 February 2014 to April 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 and Figure 3.
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 |
2.1.2 The box culvert works has been partially completed by the end of March 2014 except the last construction activity, 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 to be carried out in November 2015 after the utilities diversions complete. The construction works are temporary suspended until the utilities diversion works complete.
2.1.3 As such, water quality monitoring has been conducted for the first week of April 2014 only to cover the temporary suspension of the construction work. The 4-week post construction water quality monitoring will be commenced after the installation of the base slab finishes, hence the completion of the box culvert works.
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 |
129.0mg/m3 |
232.0mg/m3 |
180.8mg/m3 |
|
24 hour Total
Suspended Particulate |
|||
|
SR77 |
67.1mg/m3 |
221.5mg/m3 |
134.3mg/m3 |
|
Construction Noise |
|||
|
SR77 |
54.5dB(A) |
66.9dB(A) |
62.2dB(A) |
|
Water Quality |
|||
|
DO |
|||
|
I5 |
6.7mg/L |
9.3mg/L |
7.9mg/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 |
9.1NTU |
86.7NTU |
28.5NTU |
|
Baseline
Data |
12.4NTU |
91.5NTU
|
26.1NTU |
|
30%
disturbance due to human activity |
16.1NTU |
118.9NTU
|
34.0NTU |
|
SS |
|||
|
I5 |
3.7mg/L |
72.5mg/L
|
13.9mg/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
maximum recorded suspended solid in the
reporting quarter is 72.5mg/L which is higher than
the 30% disturbance of the baseline maximum value (60.5mg/L). However, respective investigation has
been conducted and concluded the exceedances 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. The exceedances were considered not to be 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 |
3 |
0 |
|
Limit
Level |
0 |
0 |
|
|
Construction Noise |
|||
|
Leq 30min |
Action Level |
0 |
0 |
|
Limit
Level |
0 |
0 |
|
|
Water Quality |
|||
|
DO |
Action Level |
0 |
0 |
|
Limit
Level |
0 |
0 |
|
|
Turbidity |
Action Level |
1 |
0 |
|
Limit
Level |
0 |
0 |
|
|
SS |
Action Level |
0 |
0 |
|
Limit
Level |
5 |
0 |
|
3.2.3
Contractor
has been reminded to strengthen the mitigation measures including:
· Watering of exposed slope and earths to avoid fugitive dust emission;
· Water spraying should be properly implemented whenever necessary for the unpaved roads, access roads and construction areas;
· Silty effluent should be treated/desilted before discharged. Untreated effluent should be prevented from entering public drain channel;
· Channels or earth bunds or sand bag barriers should be provided on site to prevent surface runoff and properly direct stormwater to silt removal facilities;
· Ensuring regular maintenance and cleaning of waste storage area;
· Improving site cleanliness especially avoid general refuse being left within the construction site;
· All types of wastes, both on land and floating in the river stream, should be collected and sorted properly, and also be disposed timely and properly; and
·
Ensuring the provision of tree
protection zone for all existing trees to be transplanted or retained.
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 8,323m3 of excavated material has
been generated. 5,263m3 of
inert C&D materials was disposed of at public fill to Tuen
Mun Area 38, while 2,144m3 of inert
C&D materials were reused on site.
440m3 of general refuse was disposed of at North East New
Territories (NENT) Landfill. No
plastics and no paper/cardboard packaging, plastics and metals were collected
by recycling contractor in the reporting quarter. 39m3 of 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. No environmental
complaints were received in the reporting quarter. Investigations have been conducted. 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.
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 9 exceedance events
have been recorded. No exceedances were concluded not to be project related. No necessary remedial actions have been taken.
6.1.3 No environmental non-compliances were noted. No environmental complaint was received. No environmental related prosecution or notification of summons were received in the reporting quarter.
6.1.4 The box culvert works has been partially completed by the end of March 2014 except the last construction activity, 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 to be carried out in November 2015 after the utilities diversions complete. The construction works are temporary suspended until the utilities diversion works complete.
6.1.5 As such, water quality monitoring has been conducted for the first week of April 2014 only to cover the temporary suspension of the construction work. The 4-week post construction water quality monitoring will be commenced after the installation of the base slab finishes, hence the completion of the box culvert works.