1.
This is the 15th 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 April
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 |
2nd, 8th,
14th, 17th, 23rd and 29th April 2014. |
|
24-hr TSP Monitoring |
2nd, 8th,
14th, 17th, 23rd and 29th April
2014. |
|
Noise Monitoring |
3rd, 9th
, 15th , 22nd and 30th April 2014 |
|
Water Quality Monitoring |
2nd, 4th,
7th, 10th, 12th, 14th, 16th,
18th, 22nd, 24th , 26th, 28th
and 30th April 2014 |
|
15th and 23rd April 2014 |
|
|
Additional Land-based Dolphin Behaviour
and Movement Monitoring |
16th and 25th
April 2014 |
|
Environmental Site Inspection |
1st, 8th ,
15th, 25th and 29th April 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) |
6 |
1 |
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 six Action Level and one 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.
One 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)
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 and formwork installation
Ÿ Kingpost
installation for precast cap and associated steel welding works
Land
Viaduct (P81 to P114)
Ÿ Land piling
and concreting works
Ÿ Rebar
threading for coupler
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
Ÿ Carriageway
diversion
Ÿ Tendon
ducts
Ÿ Falsework erection