1.
This is the 21st 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 October 2014.
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 |
6th, 10th, 16th,
22nd and 28th October 2014. |
|
24-hr TSP Monitoring |
6th, 10th, 16th,
22nd and 28th October 2014. |
|
Noise Monitoring |
3rd , 7th , 13th,
23rd and 29th October 2014 |
|
Water Quality Monitoring |
1st, 3rd, 6th, 8th,
10th, 13th, 15th, 17th, 20th
, 22nd, 24th, 27th, 29th and 31st
October 2014 |
|
8th and 22nd October 2014 |
|
|
Additional Land-based
Dolphin Behaviour and Movement Monitoring |
20th and 27th October 2014 |
|
Environmental Site
Inspection |
7th, 14th, 21st and
31st October 2014 |
|
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) |
12 |
10 |
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 twelve Action Level and ten 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 due to natural fluctuation of shallow water and movement
of vessel;
3)
Sediment plume discharging to the monitoring stations from the area
outside the site boundary;
4)
No marine construction works were conducted in vicinity of monitoring
station in which exceedance was recorded; and
5)
The exceeded results were similar or within the ranges baseline
monitoring results.
Complaint Log
9.
No environmental complaint was received in the reporting month.
Notification of
Summons and Successful Prosecutions
10.
One 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
Installation of temporary piles, platforms
permanent casing
Ÿ
Removal of piling platform and temporary pile
extraction
Ÿ
Pile excavation
Ÿ
Inter-face tests, full depth coring 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
Lifting frame fabrication in Dongguan
Ÿ
Segment Unloading Frame (SUF) in Portion C
Ÿ
Assembly of Launching Gantry 2 at River Trade
Terminal
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
Ÿ
Cross road steel portal beams erection and
corresponding falsework erection
Ÿ
Steel girders and cross beams erection