1.
This is the 13th 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 February
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 February 2014. |
|
24-hr TSP Monitoring |
5th, 11th,
17th, 21st and 27th February 2014. |
|
Noise Monitoring |
6th, 12th
, 18st and 24th
February 2014 |
|
Water Quality Monitoring |
1st, 4th,
6th, 8th, 11th, 13th, 15th,
17th, 19th, 21st, 25th and 27th February 2014 |
|
24th and 26th February 2014 |
|
|
Environmental Site Inspection |
5th, 11th
, 18th and 28th February 2014 |
|
Archaeological Site Inspection |
N/A |
Remark:
(1)
Due to the short
notice given to Dolphin Specialist after receiving preliminary reply on Review Report for Land-based Dolphin Behaviour and
Movement Monitoring from AFCD in mid of February 2014, additional
land-based dolphin behaviour and movement monitoring
could not be arranged on 27 and 28 February 2014.
(2)
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 |
1 |
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) |
9 |
3 |
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 Limit Level exceedance
was recorded. One Action Level exceedance for 24-hr
TSP monitoring at AMS1was recorded on 17 February 2014.
6.
According to the investigation, no dust generation works was conducted
at near the monitoring station during the monitoring and observable dust source
from construction activity under Contract No. HY/2011/09. In addition, construction
works from other site and stockpile of dusty materials without proper cover at near
the monitoring station was observed. Therefore, the exceedance
is considered not due to the Contract.
Construction Noise
7.
All construction noise monitoring was conducted as scheduled in the
reporting month. No Action/Limit Level exceedance was
recorded.
Water Quality
8.
All water quality monitoring was conducted as scheduled in the reporting
month. There are nine Action Level and three Limit Level exceedances
for suspended solids were recorded. No Action/Limit Level exceedance
for dissolved oxygen and turbidity were recorded.
9.
According to the investigation, no pollution discharge was observed from
the site. In addition,
sediment plume due to
natural fluctuation of shallow water was observed and the exceeded results were
similar or within the ranges baseline monitoring results. Therefore, the exceedances are
considered not due to the Contract.
Complaint Log
10.
No environmental complaints were received in the reporting month.
Notification of Summons and Successful Prosecutions
11.
No notification of summons and successful prosecution was received in
the reporting month.
12.
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).
13.
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 P84)
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 Pile
excavation by Reverse Circulation Drill (RCD) method
Ÿ Pile
excavation by Kelly method
Ÿ Inter-face
coring test, full depth coring test and sonic test
Ÿ Pre-drilling
works
Ÿ Operation
of floating concrete batching plants
Ÿ Trimming of
pile head
Ÿ Grouting
works
Ÿ Driving of
sheet piling
Ÿ Trial water
cracking and trial shaft grouting
Ÿ Precast
shells waterproofing works
Ÿ Advanced
concrete breaking works inside the permanent steel casing
Land
Viaduct (P85 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