1.
This is the 20th 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 September
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 |
3rd, 8th,
12th, 18th, 24th and 30th September
2014. |
|
24-hr TSP Monitoring |
3rd, 8th,
12th, 18th, 24th and 30th
September 2014. |
|
Noise Monitoring |
4th , 10th
, 19th and 25th
September 2014 |
|
Water Quality Monitoring |
1st, 3rd,
5th, 8th, 10th, 12th, 15th,
18th, 20th , 22nd, 24th, 26th
and 29th September 2014 |
|
10th and 23th September 2014 |
|
|
Additional Land-based Dolphin Behaviour
and Movement Monitoring |
1st and 5th September 2014 |
|
Environmental Site Inspection |
2nd, 10th,
17th, 26th and 30th September 2014 |
|
Archaeological Site Inspection |
30th September 2014 |
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) |
11 |
13 |
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 except the water quality monitoring on 16 September 2014 during mid-ebb
tide which was cancelled due to adverse weather condition (Typhoon Signal No.3).
There are eleven Action Level and thirteen 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)
The sea
conditions were rough. Localized plumes due to natural fluctuation were
observed in the monitoring area;
3)
Sediment
plume due to natural fluctuation of shallow water and movement of vessel;
4)
Sediment
plume discharging to the monitoring stations from the area outside the site
boundary;
5)
Adverse
water quality outside the site boundary; and
6)
The
major marine construction works (e.g. bored piling works) has not been
commenced.
Complaint Log
9.
No environmental complaint was 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)
RCD Method:
Ÿ Piling
works
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
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 Modification
works to the Segment Unloading Frame (SUF) in Portion C
Ÿ Delivery
and assembly of Launching Gantry 2 and Lifting Frame 2 at River Trade Terminal
Ÿ Winches
delivery and commissioning
Ÿ Trial
assembly of Lifting Frame 1
Land
Viaduct (P85 to Abutment at SHT) & Marine Viaduct (P81 - P84)
Ÿ Pile
construction
Ÿ Pouring of
column
Ÿ Piling
platform formation
Ÿ Steel
fixing works and formwork erection
Ÿ Blinding
concrete for scaffolding works
Ÿ Dismantling
of steel bracket system
Ÿ
Erection of steel bracket system