TABLE OF CONTENTS
Page
1.4 Summary
of Construction Works
2 Summary of EM&A
Programme Requirements
2.2 Environmental
Quality Performance (Action/Limit Levels)
2.3 Environmental
Mitigation Measures
3.5 Environmental
Site Inspection and Audit
4 Advice on the Solid and Liquid Waste
Management Status
4.1 Summary
of Solid and Liquid Waste Management
5 Implementation Status of Environmental Mitigation Measures
5.1 Implementation
Status of Environmental Mitigation Measures
6 Summary
of Exceedances of the Environmental Quality Performance Limit
6.1 Summary
of Exceedances of the Environmental Quality Performance Limit
7 Summary
of Complaints, Notification of Summons and Successful Prosecutions
7.1 Summary
of Environmental Complaints, Notification of Summons and Successful Prosecutions
8 Comments, recommendations
and Conclusions
8.1 Comments
on mitigation measures
8.2 Recommendations
on EM&A Programme
List of Tables
Table 1.1 Contact Information of Key Personnel
Table 3.1 Summary of Number of Monitoring Events for
1-hr & 24-hr TSP Concentration
Table 3.2 Summary of
Number of Exceedances for 1-hr & 24-hr TSP Monitoring
Table 3.3 Summary of Number of Monitoring Events for Impact Noise
Table 3.4 Summary of Number of Monitoring Exceedances
for Impact
Noise
Table 3.5 Summary of Water Quality Exceedances in
June 2014 ¡V August 2014
Table 3.6 Summary of Key Dolphin Survey Findings in June ¡V August 2014
Table 3.7 Summary of STG and ANI encounter rates in June - August 2014
Figures
Figure 1 General
Project Layout Plan
Figure
2 Impact
Air Quality and Noise Monitoring Stations and Wind
Station
Figure
3 Impact Water
Quality Monitoring Stations
Figure
4 Impact Dolphin
Monitoring Line Transect Layout Map
Figure 5 Environmental
Complaint Handling Procedure
List of Appendices
Appendix
A Project
Organization for Environmental Works
Appendix
B Three
Month Rolling Construction Programmes
Appendix C Implementation
Schedule of Environmental Mitigation Measures (EMIS)
Appendix D Summary of Action
and Limit Levels
Appendix E Graphical
Presentation of Impact Air
Quality Monitoring Results
Appendix
F Graphical
Presentation of Impact
Daytime Construction Noise Monitoring Results
Appendix
G Graphical
Presentation of Impact Water
Quality Monitoring Results
Appendix H Impact Dolphin Monitoring Survey
Findings and Analysis
Appendix
I Quarterly Summary of Waste Flow
Table
This
report documents the findings of EM&A works conducted in the period between
1 June 2014 and 31 August 2014. As informed by the Contractor, major activities
in the reporting quarter were:-
Marine-based Works
-
Cellular structure installation
-
Connecting arc cell installation
-
Laying geo-textile
-
Optimizing rubble mound seawalls
-
Conforming sloping seawalls
-
Sand blanket laying
-
Sand filling
-
Rock filling
-
Maintenance of silt curtain & silt screen at sea water intake of
HKIA
-
Band drain installation
-
Backfill cellular structure
-
Geotechnical Instrumentation works
-
Surcharge laying
-
Capping Beams structures
-
Construction of temporary jetties for surcharge laying
-
Temporary Watermain construction along access at
Portion D
-
Flat barge of unloading public fill for surcharge laying
-
Precast Yard Setup
Land-based Works
-
Maintenance works of Site Office at Works Area WA2
-
Maintenance works of Public Works Regional Laboratory at Works Area WA3
-
Maintenance of Temporary Marine Access at Works Area WA2
A summary of monitoring and audit activities
conducted in the reporting quarter is listed below:
24-hour Total Suspended Particulates (TSP) monitoring 1-hour
TSP monitoring |
16 sessions 16 sessions |
Noise monitoring |
13 sessions |
Impact water quality monitoring |
39 sessions |
Impact dolphin monitoring |
6 surveys |
Joint Environmental site inspection |
13 sessions |
Breaches
of Action and Limit Levels for Air Quality
All 1-Hour TSP and 24-hour TSP results were below the Action and Limit Level in the reporting period.
Breaches
of Action and Limit Levels for Noise
For construction noise, no exceedance was recorded at all monitoring stations in the reporting period.
Breaches of Action and Limit Levels for Water Quality
Breaches
of Action and Limit Levels for Impact Dolphin Monitoring
One (1) Limit Level exceedance was recorded
for Chinese White Dolphin monitoring in the reporting quarter.
Triggering of Event Action Plan for Impact Dolphin Monitoring
Event Action Plan for Impact Dolphin
Monitoring was triggered. For detail of investigation, please refer to appendix
L.
Implementation
Status and Review of Environmental Mitigation Measures
Most of the recommended
mitigation measures, as included in the EM&A programme,
were implemented properly in the reporting quarter.
The recommended environmental
mitigation measures effectively minimize the potential environmental impacts
from the Project. The EM&A programme effectively monitored the
environmental impacts from the construction activities and ensure the proper
implementation of mitigation measures. No particular recommendation was advised
for the improvement of the programme.
Moreover, regular review
and checking on the construction methodologies, working processes and plants
were carried out to ensure the environmental impacts were kept minimal and
recommended environmental mitigation measures were implemented
effectively.
Complaint,
Notification of Summons and Successful Prosecution
As informed by the
Contractor on 3 July 2014, there was an environmental complaint received on 13
June 14. The complainant who lived at Caribbean Coast complained that
there were night time noise and visual impact (strong lighting) from the
overnight construction works/plants of HKBCF Island. After
investigation, the part of the complaint which is related to visual impact is
likely to be related
to the construction works of this contract. However, with referred to the
available information, it is concluded that the part of the complaint which is
related to night time noise is unlikely to be related to this Contract.
As informed by the Contractor on 23 July 14, a complaint has been
received from Oriental Daily Newspaper on 22 July 14. In the complaint,
Oriental Daily Newspaper stated that Miss Cheung, who is a resident of Miami
Beach Towers (Tuen Mun),
pointed out that construction was being conducted at the sea area in front of
the estate, a lot of sand delivery barges were moored at sea area between
Castle Peak Beach (Tuen Mun Typhoon
Shelter) and Tuen Mun Ferry
Pier. She discovered on several occasions that there were leakage of soil from
sand delivery barges causing discoloration of sea water and sometimes, leaking
of sand from more than two sand delivery barges at a time was observed. After investigation, there is no
adequate information to conclude the observed impact is related to this
Contract.
As
informed by the Contractor on 22 Aug 2014, EPD referred a complainant to this
Contract on 21 August 2014, the complainant raised concern about uncovered sand
barges at the sea area outside Melody Garden, Tuen Mun, sand were brought to inside of houses by wind and also
causing the vicinity to be covered with sand and dust. After investigation, there is no
adequate information to conclude the observed impact is related to this
Contract.
No
notification of summons or prosecution was received in the reporting quarter.
Table 1.1 Contact
Information of Key Personnel
Party |
Position |
Name |
Telephone |
Fax |
Engineer¡¦s Representative (ER) (Ove Arup & Partners Hong Kong Limited) |
Chief Resident Engineer |
Roger Marechal |
2528 3031 |
2668 3970 |
IEC / ENPO (ENVIRON Hong Kong Limited) |
Independent Environmental Checker |
Raymond Dai |
3465 2888 |
3548 6988 |
Environmental Project Office Leader |
Y.H. Hui |
3465 2868 |
3465 2899 |
|
Contractor (China Harbour
Engineering Company Limited) |
General Manager (S&E) |
Daniel Leung |
3157 1086 |
2578 0413 |
Environmental Officer |
Richard Ng |
36932253 |
2578 0413 |
|
24-hour Hotline |
Alan C.C. Yeung |
9448 0325 |
-- |
|
ET (AECOM
Asia Company Limited) |
ET Leader |
Echo Leong |
3922 9280 |
2317 7609 |
Marine-based Works
- Cellular
structure installation
- Connecting
arc cell installation
- Laying
geo-textile
- Optimizing
rubble mound seawalls
- Conforming
sloping seawalls
- Sand
blanket laying
- Sand
filling
- Rock
filling
- Maintenance
of silt curtain & silt screen at sea water intake of HKIA
- Band
drain installation
- Backfill
cellular structure
- Geotechnical
Instrumentation works
- Surcharge
laying
- Capping
Beams structures
- Construction
of temporary jetties for surcharge laying
- Temporary
Watermain construction along access at Portion D
- Flat
barge of unloading public fill for surcharge laying
- Precast
Yard Setup
- Connecting
arc cell installation
- Laying
geo-textile
- Optimizing
rubble mound seawalls
- Conforming
sloping seawalls
- Sand
filling
- Rock
filling
- Maintenance
of silt curtain & silt screen at sea water intake of HKIA
- Stone
column installation
- Band
drain installation
- Backfill
cellular structure
- Geotechnical
Instrumentation works
- Construction
of temporary seawall
- Portion
D Construction of Access to Portion A
- Surcharge
laying
- Construction
of temporary pier at Portion A
- Precast
Yard setup
- Seawall
blocks for temporary construction
- Vibro-compaction on surcharge
- Construction
of conveyors for public fill
- Temporary
bridge at Portion D
Land-based Works
- Maintenance
works of Site Office at Works Area WA2
- Maintenance works of Public Works Regional Laboratory at
Works Area WA3
- Maintenance
of Temporary Marine Access at Works Area WA2
Table
3.1 Summary of Number of Monitoring Events for 1-hr & 24-hr
TSP Concentration
Monitoring Parameter |
Location |
No. of monitoring events |
||
June 14 |
July 14 |
August 14 |
||
1-hr TSP |
AMS2 |
15 |
18 |
15 |
AMS3B |
15 |
18 |
15 |
|
AMS7 |
15 |
18 |
15 |
|
24-hr TSP |
AMS2 |
5 |
6 |
5 |
AMS3B |
5 |
6 |
5 |
|
AMS7 |
5 |
6 |
5 |
Table 3.2 Summary of Number of Exceedances for 1-hr & 24-hr TSP Monitoring
Monitoring Parameter |
Location |
Level of Exceedance |
Level of Exceedance |
||
June 14 |
July 14 |
August 14 |
|||
1-hr TSP |
AMS2 |
Action |
0 |
0 |
0 |
Limit |
0 |
0 |
0 |
||
AMS3B |
Action |
0 |
0 |
0 |
|
Limit |
0 |
0 |
0 |
||
AMS7 |
Action |
0 |
0 |
0 |
|
Limit |
0 |
0 |
0 |
||
|
Total |
0 |
0 |
0 |
|
24-hr TSP |
AMS2 |
Action |
0 |
0 |
0 |
Limit |
0 |
0 |
0 |
||
AMS3B |
Action |
0 |
0 |
0 |
|
Limit |
0 |
0 |
0 |
||
AMS7 |
Action |
0 |
0 |
0 |
|
Limit |
0 |
0 |
0 |
||
|
Total |
0 |
0 |
0 |
Table 3.3 Summary
of Number of Monitoring Events for Impact Noise
Monitoring
Parameter |
Location |
No.
of monitoring events |
||
June 14 |
July 14 |
August 14 |
||
NMS2 |
4 |
5 |
4 |
|
NMS3B |
4 |
5 |
4 |
Table
3.4 Summary
of Number of Monitoring Exceedances for Impact Noise
Monitoring Parameter |
Location |
Level of Exceedance |
Level of Exceedance |
||
June 14 |
July 14 |
August 14 |
|||
NMS2 |
Action |
0 |
0 |
0 |
|
Limit |
0 |
0 |
0 |
||
NMS3B |
Action |
0 |
0 |
0 |
|
Limit |
0 |
0 |
0 |
||
|
Total |
0 |
0 |
0 |
Table 3.5 Summary
of Water Quality Exceedances in June 2014 ¡V
August 2014
Exceedance Level |
DO (S&M) |
DO (Bottom) |
Turbidity |
SS |
Total |
||||||
Ebb |
Flood |
Ebb |
Flood |
Ebb |
Flood |
Ebb |
Flood |
Ebb |
Flood |
||
Action |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
|
Limit |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
|
IS(Mf)6 |
Action |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
Limit |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
|
IS7 |
Action |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
Limit |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
|
IS8 |
Action |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
Limit |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
|
IS(Mf)9 |
Action |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
Limit |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
|
IS10 |
Action |
(1) 15 August
14 |
(1) 15 August
14 |
(1) 15 August
14 |
(1) 15 August
14 |
0 |
0 |
0 |
0 |
2 |
2 |
Limit |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
|
IS(Mf)11 |
Action |
(1) 15 August
14 |
(1) 15 August
14 |
(1) 15 August
14 |
(1) 15 August
14 |
0 |
0 |
0 |
0 |
2 |
2 |
Limit |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
|
IS(Mf)16 |
Action |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
Limit
|
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
|
IS17 |
Action |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
Limit |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
|
SR3 |
Action |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
Limit |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
|
SR4(N) |
Action |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
Limit |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
|
SR5 |
Action |
(1) 15 August
14 |
(1) 15 August
14 |
0 |
(1) 15 August
14 |
0 |
0 |
0 |
0 |
1 |
2 |
Limit |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
|
SR6 |
Action |
0 |
(1) 15 August
14 |
0 |
(1) 15 August
14 |
0 |
0 |
0 |
0 |
0 |
2 |
Limit |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
|
SR7 |
Action |
0 |
(1) 15 August
14 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
1 |
Limit |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
|
SR10A |
Action |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
Limit |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
|
SR10B (N) |
Action |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
Limit |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
|
Total |
Action |
3 |
5 |
2 |
4 |
0 |
0 |
0 |
0 |
14 |
|
|
Limit |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
Note: S:
Surface;
M: Mid-depth;
3.3.3.1
For marine works, marine filling was conducted at portion C2b during
flood and ebb tide at area behind cellular structures on 15 Aug 2014. Also
refer to above layout map.
3.3.3.2
Exceedance was not due to marine based construction
works of the Project because:
3.3.3.3
With reference to the silt curtain checking record defects was observed
at north parts of the perimeter silt curtain and at southwest entrance of the
perimeter silt curtain.
3.3.3.4
As informed by the Contractor, filling was conducted on 13, 15 and 18
August 2014 at Portion C2b, but with referred to monitoring record and photo
record attached, no sediment plume has been observed to flow from the inside of
the perimeter silt curtain to the outside of the perimeter silt curtain and no
discoloration of sea water has been observed. Please refer to the photo
attached for reference of the sea condition during ebb tide and flood tide on
15 August 2014.
3.3.3.5
Photo record of sea condition taken during ebb tide at north of HKBCF
Reclamation Works near IS(Mf)11, IS10 and SR5 on 15
August 2014.
3.3.3.6
Photo record of sea condition taken during flood tide at north of HKBCF
Reclamation Works near IS(Mf)11, IS10 and SR5 on 15
August 2014.
3.3.3.7
Construction activities were reviewed, almost the same marine works were
conducted at almost the same location on 13, 15 and 18 August 2014, but no DO exceedance was recorded on 13 and 18 August 2014. This
indicates that the DO exceedances were unlikely to
attribute to marine works of this Contract.
3.3.3.8
Low DO value was observed at upstream control station during ebb tide.
DA DO (surface & middle) were 5.3mg/L and 5.2 mg/L at CS(Mf)3
and CS4 during ebb tide. DO (bottom) were 4.8mg/L and 4.6mg/L at CS(Mf)3 and CSA respectively. This indicates that low DO
(Surface & middle; Bottom) occurred at locations upstream to HKBCF
Reclamation Works during ebb tide.
3.3.3.9
Low DO value was observed at upstream control station during flood tide.
DA DO (surface & middle) were 5.2mg/L, 4.7 mg/L and 4.6 mg/L at CS(Mf)5,
CS6 and CSA during ebb tide. DO (bottom) were 5.3mg/L, 4.5 mg/L and 4.1mg/L at CS(Mf)5, CS6 and CSA respectively.
This indicates low DO (Surface & middle; Bottom) occurred at locations
upstream to HKBCF Reclamation Works during flood tide.
3.3.3.10
After investigation, the Action Level exceedance
of the surface and middle DO in mg L-1 recorded at IS(Mf)11, IS10
and SR5 during Mid-ebb tide; bottom DO in mg L-1 recorded at IS(Mf)11 and IS10 during
Mid-ebb tide; surface and middle DO in mg L-1 recorded at IS(Mf)11,
IS10, SR5, SR6 and SR7 during mid-flood tide; bottom DO in mg L-1
recorded at IS(Mf)11, IS10, SR5 and SR6 during mid-flood tide were unlikely to
attribute to construction works of this Contract.
3.3.3.11
Action taken under the action plan
¡P
in situ measurement was repeated to confirm findings;
¡P
After considering the above mentioned investigation results, it appears
that it was unlikely that the DO exceedances were not
attributed to active construction activities of this project;
¡P
Monitoring data, all plant, equipment and Contractor's working methods
were checked;
¡P
Since it is considered that the DO exceedances
are unlikely to be project related, as such, actions 5 - 7 under the EAP are
not considered applicable.
3.3.3.12
Nevertheless, the Contractor was reminded to ensure provision of ongoing
maintenance to the silt curtains and to carry out maintenance work once defects
were found.
3.3.3.13
With reference to the silt curtain checking record on 27 August 2014,
the defect observed on 15 August 2014 at north part of the perimeter silt
curtain has been repaired. As informed by the Contractor, maintenance work of
the silt curtain is on-going and carried out by the Contractor on a daily
basis.
Table 3.6 Summary
of Key Dolphin Survey Findings in June
¡V August 2014
Number of Impact Surveys Completed^ |
6 |
Survey Distance Travelled under Favourable On- Effort Condition |
661.1km |
Number of Sightings |
27 sightings (17 sightings are ¡¨on effort¡¨
(which are all under favourable condition), 10 ¡§sightings
are opportunistic¡¨) |
Number of dolphin individual sighted |
87 individuals (the best estimated group
size) |
Dolphin Encounter Rate# |
NEL: 0.5 NWL: 3.6 |
Dolphin Group Size |
Average of NEL: 1.0 Average of NWL: 3.2 Varied from 1-15 individuals |
Most Often frequent dolphin sighting area |
Sha
Chau and Lung Kwu Chau Marine Park, the western
limit of NWL and Tai O area. |
# Dolphin Encounter Rate = (Sum of 1st 2nd, 3rd
month¡¦s total sighting/ Sum of 1st , 2nd,
3rd month¡¦s total effort)*100km (encounter
rates are calculated using on effort sightings made under favourable
conditions only.)
Table 3.7 Summary
of STG and ANI encounter rates in June - August 2014 |
||||
NEL |
NWL |
Level Exceeded |
|
|
STG* |
0.5 |
0.5 |
Limit |
|
ANI** |
3.6 |
10.9 |
|
*Quarterly Average Encounter Rate of Number of Dolphin Sightings (STG)
presents averaged encounter rates of the three monitored months in terms of
groups per 100km per survey event.
STG Encounter rate = (Average of (total number sighting/total effort) of
1st and 2nd completed survey# of 1st month+ Average of (total number
sighting/total effort) of 1st and 2nd completed survey# of 2nd month + Average
of (total number sighting/total effort) of 1st and 2nd completed survey# of 3rd
month)/3*100km
**Quarterly Average Encounter Rate of Total Number of Dolphins (ANI)
presents averaged encounter rates of the three monitored months in terms of
individuals per 100km per survey event.
ANI Encounter rate = (Average of (total number of Individual/total
effort) of 1st and 2nd completed survey# of 1st month+ Average of (total number
of Individual/total effort) of 1st and 2nd completed survey# of 2nd month +
Average of (total number of Individual/total effort) of 1st and 2nd completed
survey# of 3rd month +)/3*100km
Air Quality
Water Quality
Landscape and Visual Impact
Others
¡P
The Contractor was reminded to keep chemical and chemical waste
containers in good condition and free from corrosion and damage which may impair
the performance of the containers.
¡P
The Contractor was reminded to provide tightly closed lids
to chemical container so as to avoid leakage of chemicals and chemical waste.
In addition, the Contractor was reminded to ensure every chemical and chemical
waste containers securely closed or sealed, correctly placed and kept clean.
¡P
The contractor was reminded to
continue to follow the spill response plan in the event of accidental oil
spillage.
-
There is no sufficient information provided by the
complainant to make sure that the concerned barges are related to this project.
-
Date of the observed impact was not specified by
the complainant so the IWQM results available for July 14 for monitoring
stations close to the concerned area - IS12, IS13, IS14, IS15 have been
reviewed and there were no impact water quality monitoring result that shows
the turbidity or suspended solid of sea water were adversely affected.
-
In addition, site inspection has been jointly
conducted with the Contractor and RSS on 24 and 31 July 2014, but no leakage of
soil/sand material from barges causing discoloration of sea water was observed
inside or outside the perimeter silt curtain of HKBCF reclamation works. Please
see below the photos taken during site inspection for reference.
-
Photo take on 24 July 14.
-
Photo take on 31 July 14.
-
As informed by the Contractor, overloading of sand
on sand delivery barge is prohibited from runoff/overflow of sand material.
¡P
1hr TSP and 24hrs TSP monitoring data of August
2014 have been reviewed.
¡P
Site inspections were conducted jointly on 28
August 2014 with RSS and the Contractor.
¡P
There is no sufficient information provided by the
complainant to make sure that the concerned barges are related to this project.
¡P
Date of the observed impact was not specified by
the complainant so the impact air quality monitoring (IAQM) results available
for August 2014 for monitoring stations close to the concerned area ¡V AQMS1,
ASR1, ASR5, ASR6 and ASR10 have been reviewed and there was no impact air
quality monitoring result that shows 1-hour TSP or 24-hour TSP exceeded the
action (AL)/limit level (LL). [1]
¡P
Photo record below shows that Sand barges are
equipped with watering equipments. And watering equipment was used to keep the
sand filling material wet.
-
In addition, site inspection has been jointly
conducted with the Contractor and RSS on 28 August 2014, but no generation of
fugitive dust was observed to be caused by barges loaded with filling
material.
Air
Quality Impact
l All
working plants and vessels on site should be regularly inspected and properly
maintained to avoid dark smoke emission.
l All vehicles should be washed to
remove any dusty materials before leaving the site.
l Haul roads should be sufficiently
dampened to minimize fugitive dust generation.
l Wheel washing facilities should
be properly maintained and reviewed to ensure properly functioning.
l Temporary exposed slopes and open
stockpiles should be properly covered.
l Enclosure should be erected for cement
debagging, batching and mixing operations.
l Water spraying should be provided to suppress fugitive dust for any dusty
construction activity.
Construction
Noise Impact
l Quieter powered mechanical
equipment should be used as far as possible.
l Noisy operations should be
oriented to a direction away from sensitive receivers as far as possible.
l Proper and effective noise
control measures for operating equipment and machinery on-site should be
provided, such as erection of movable noise barriers or enclosure for noisy
plants. Closely check and replace the sound insulation materials regularly
l Vessels and equipment operating
should be checked regularly and properly maintained.
l Noise Emission Label (NEL) shall
be affixed to the air compressor and hand-held breaker operating within works
area.
l Better scheduling of construction
works to minimize noise nuisance.
l Acoustic decoupling measures
should be properly implemented for all existing and incoming construction
vessels with continuous and regularly checking to ensure effective
implementation of acoustic decoupling measures.
Water
Quality Impact
l Regular review and maintenance of
silt curtain systems, drainage systems and desilting
facilities in order to make sure they are functioning effectively.
l Construction of seawall should be
completed as early as possible.
l Regular inspect and review the
loading process from barges to avoid splashing of material.
l Silt, debris and leaves
accumulated at public drains, wheel washing bays and perimeter u-channels and desilting facilities should be cleaned up regularly.
l Silty effluent should be treated/ desilted before discharged. Untreated effluent should be
prevented from entering public drain channel.
l Proper drainage channels/bunds
should be provided at the site boundaries to collect/intercept the surface
run-off from works areas.
l Exposed slopes and stockpiles
should be covered up properly during rainstorm.
Chemical
and Waste Management
l All types of wastes, both on land
and floating in the sea, should be collected and sorted properly and disposed
of timely and properly. They should be properly stored in designated areas
within works areas temporarily.
l All chemical containers and oil
drums should be properly stored and labelled.
l All plants and vehicles on site
should be properly maintained to prevent oil leakage.
l All kinds of maintenance works
should be carried out within roofed, paved and confined areas.
l All drain holes of the drip trays
utilized within works areas should be properly plugged to avoid any oil and
chemical waste leakage.
l Oil stains on soil surface and
empty chemical containers should be cleared and disposed of as chemical waste.
l Regular review should be
conducted for working barges and patrol boats to ensure sufficient measures and
spill control kits were provided on working barges and patrol boats to avoid
any spreading of leaked oil/chemicals.
Landscape
and Visual Impact
l All existing,
retained/transplanted trees at the works areas should be properly fenced off
and regularly inspected.
¡P
[1] Reviewed IAQM
data and the action (AL)/limit level (LL) is available online
respectively at:
http://www.hzmbenpo.com/php/list_air_year_All.php,and http://www.hzmbenpo.com/emna_report/tmclkl_hy201208/manual/html/toc.htm