1.
This is the 14th 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 March
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 |
5th, 11th,
17th, 21st and 27th March 2014. |
|
24-hr TSP Monitoring |
5th, 11th,
17th, 21st and 27th March 2014. |
|
Noise Monitoring |
6th, 12th
, 18st and 24th
March 2014 |
|
Water Quality Monitoring |
1st, 3th,
5th, 7th, 10th, 12th, 14th,
17th, 19th, 21st, 24th , 27th,
29th and 31st March 2014 |
|
12th and 26th March 2014 |
|
|
Additional Land-based Dolphin Behaviour
and Movement Monitoring |
14th and 19th
March 2014 |
|
Environmental Site Inspection |
5th, 11th
, 18th and 28th March 2014 |
|
Archaeological Site Inspection |
21st March
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) |
13 |
4 |
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 thirteen Action Level and four Limit Level exceedances
for suspended solids were recorded. No Action/Limit Level exceedances
for dissolved oxygen and turbidity were recorded.
8.
According to the investigation, no pollution discharge was observed from
the site. In addition, sediment plume due to natural fluctuation of shallow
water and discharging from the area outside the site boundary to the monitoring
station were observed. In addition, some of the exceeded results were similar
or within the ranges baseline monitoring results. Therefore, the exceedances are considered not due to the Contract.
Complaint Log
9.
Two 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)
Ÿ Construction
of the temporary jetty
Ÿ Installation
of temporary casings, piling jackets, temporary piles, platform and permanent
casings
Ÿ Dismantling
of piling jacket
Ÿ Piling
platform removal works
Ÿ Pile
excavation by Reverse Circulation Drill (RCD) method
Ÿ Pile
excavation by Kelly method
Ÿ Inter-face
coring test, full depth coring test, sonic test, friction test and load test
Ÿ Predrilling works
Ÿ Operation
of floating concrete batching plants
Ÿ Trimming of
pile head
Ÿ Grouting
works
Ÿ Concreting
for pile cap
Ÿ Driving of
sheet piling
Ÿ Trial water
cracking and trial shaft grouting
Ÿ Installation
of recast shells and waterproofing works
Ÿ Advanced
concrete breaking works inside the permanent steel casing
Ÿ Steel
fixing to the column
Land
Viaduct (P81 to P114)
Ÿ Land piling
and concreting works
Ÿ Rebar
threading for coupler
Ÿ Drainage
and water main diversion works
Ÿ Backfilling
Ÿ Tree
transplant and maintenance works
Ÿ Installation
of portal beam
Ÿ Excavation
works and Earth Lateral Support (ELS)
Ÿ Pouring of
pile cap and pile head breaking
Ÿ Formation
works
Ÿ Pours of
column
Ÿ Erection of
side formwork for the portal and kickers
Ÿ Road
diversion works
Ÿ Pre-drilling
works, pile cap, column and portal construction
Ÿ Side
formwork and wing slab soffit formwork
Ÿ Waling of
ELS and backfill
Ÿ Steel fixing
for bottom mat and side bars