1.
This is the 24th monthly Environmental Monitoring and Audit
(EM&A) Report prepared by Cinotech Consultants
Limited for the project
“Contract No. HY/2011/09 – Hong
Kong-Zhuhai-Macao Bridge Hong Kong Link Road – Section between HKSAR Boundary
and Scenic Hill” (hereinafter called the “Contract”). This report documents the findings of EM&A Works conducted in January
2015.
Environmental Monitoring
and Audit Progress
2.
A summary of the monitoring activities in this reporting month is listed
in Table I below:
Table I Summary
Table for Monitoring Activities in the Reporting Month
|
Parameter(s) |
Date(s) |
|
1-hr TSP Monitoring |
2nd, 8th, 14th, 20th,
26rd and 30th January 2015 |
|
24-hr TSP Monitoring |
2nd, 8th, 14th, 20th,
26rd and 30th January 2015 |
|
Noise Monitoring |
5th, 15th, 21st and
27th January 2015 |
|
Water Quality Monitoring |
2nd, 5th, 7th, 9th,
12th, 14th, 16th, 19th, 21st,
23rd, 26th, 28th and 30th January
2015 |
|
9th and 23rd January 2015 |
|
|
Additional Land-based
Dolphin Behaviour and Movement Monitoring |
2nd and 21st January 2015 |
|
Environmental Site
Inspection |
8th, 13th, 19th and
30th January 2015 |
|
Archaeological Site
Inspection |
(1) N/A |
Remark:
(1) No archaeological site inspection
was conducted in the reporting month.
Breaches of Action and Limit Levels
3.
Summary of the environmental exceedances of the reporting month is
tabulated in Table II.
Table II Summary
Table for Events Recorded in the Reporting Month
|
Environmental Monitoring |
Parameter |
No. of Exceedance |
No. of Exceedance related to the Construction Activities of this Contract |
||
|
Action
Level |
Limit
Level |
Action
Level |
Limit
Level |
||
|
Air Quality |
1-hr TSP |
0 |
0 |
0 |
0 |
|
24-hr TSP |
0 |
0 |
0 |
0 |
|
|
Noise |
Leq(30min) |
0 |
0 |
0 |
0 |
|
Water Quality |
Dissolved Oxygen (DO)
(Surface & Middle) |
0 |
0 |
0 |
0 |
|
Dissolved Oxygen (DO)
(Bottom) |
0 |
0 |
0 |
0 |
|
|
Turbidity |
0 |
0 |
0 |
0 |
|
|
Suspended Solids (SS) |
5 |
5 |
0 |
0 |
|
1-hour
TSP Monitoring
4.
All 1-hour TSP monitoring was conducted as scheduled in the reporting month. No Action/Limit Level exceedance was
recorded.
24-hour
TSP Monitoring
5.
All 24-hour TSP monitoring was conducted as scheduled in the reporting month. No Action/Limit Level exceedance was
recorded.
Construction
Noise
6.
All construction noise monitoring was conducted as scheduled in the
reporting month. No Action/Limit Level exceedance was recorded.
Water Quality
7.
All water quality monitoring was conducted as scheduled in the reporting
month. There are five Action Level and five Limit Level exceedances for suspended
solids were recorded. No Action/Limit Level exceedance for dissolved oxygen and
turbidity were recorded.
8.
According to the investigation, the exceedances are considered not due
to the Contract due to the following reasons:
1)
No pollution discharge was observed from the site;
2)
Sediment plume which is
considered due to the movement of vessel was observed but no direct evidence to
show the vessel was belonged to HY/ 2011/09;
3)
Sediment plume discharging to the monitoring stations from the area
outside the site boundary; and
4)
Adverse water quality outside
the site boundary.
Complaint Log
9.
No environmental complaints were received in the reporting month.
Notification of
Summons and Successful Prosecutions
10.
No notification of summons and successful prosecution was received in
the reporting month.
11.
This report has been developed in compliance with the reporting
requirements for the subsequent monthly EM&A Report as required by the
EM&A Manual for Hong Kong Link Road (EM&A Manual).
12.
Major site activities for
the coming reporting month will include:
WA4
Ÿ
Fabrication of rebar cages
Ÿ
Fabrication of temporary piling platforms
WA7
Ÿ
Fabrication of rebar cages
Ÿ
Loading and Unloading of rebar materials
Marine
Viaduct (P0 to P80)
Reverse
Circulation Drill (RCD) Method:
Ÿ
Piling works
Ÿ
Mooring bits and silt curtain installation
Ÿ
Installation of piling jackets
Ÿ
Dismantling of piling jackets
Ÿ
Pile excavation and casing installation
Ÿ
Inter-face tests, full depth coring test
and sonic test
Ÿ
Grouting works
Kelly
Method:
Ÿ
Removal of piling platform and temporary
pile extraction
Ÿ
Inter-face tests, full depth coring
Ÿ
test and sonic test
Ÿ
Toe grouting works
Pile
Cap Construction:
Ÿ
Installation of precast cap shells
Ÿ
Concreting
Ÿ
Kingpost installation and associated steel
welding works
Ÿ
Concreting trimming
Works
with Cofferdam:
Ÿ
Installation of waling strut
Ÿ
Installation of sheet pile
Ÿ
Installation of temporary working platform
Ÿ
Installation of shear pin
Ÿ
Installation of bored pile casing
Ÿ
Excavation works and casting of concrete
plug
Ÿ
Dewatering works and sealing works
Ÿ
Additional welding
Column
Construction:
Ÿ
Lifting works
Ÿ
Lift concreting
Ÿ
Pier head works
Ÿ
Pier head concreting
Ÿ
Column insert installation, mobilization
and temporary works
Deck
Erection:
Ÿ
Segment Unloading Frame (SUF)
Ÿ
Winches test
Ÿ
Assembly and erection of Lifting Frame 2
Ÿ
Erection of segment on pier
Land
Viaduct (P85 to Abutment at SHT) & Marine Viaduct (P81 - P84)
Ÿ
Pile construction
Ÿ
Pouring of column
Ÿ
Pre-bored for sheet pile for cofferdam
construction
Ÿ
Seawall block coring and breaking
Ÿ
Formwork erection
Ÿ
Blinding concrete for scaffolding works
Ÿ
Dismantling of steel bracket system
Ÿ
Erection of steel bracket system cross
road steel portal beams erection and corresponding falsework
erection
Ÿ
Steel girders and cross beams erection