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Client |
Civil Engineering and Development Department |
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Project |
Supplementary Agreement No. 3 to Agreement No. CE
15/94 Design and Construction for the Minimum Option |
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Report
No. |
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Date of Issue |
14 April 2004 |
File
Ref. |
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Report Title |
Central
Reclamation, Phase III Environmental
Monitoring & Audit Monthly
Report No. 20 - March 2005 |
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Name |
Sign |
Date |
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Prepared
by : |
Albert
Chan, ACL - Environmental Consultant |
|
14 Apr. 2005 |
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Reviewed by : |
Susana
Bezy, ACL – ET Leader |
|
14 Apr. 2005 |
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Authorised by : |
Jon
Varndell, ACL – Project Mgr |
|
14 Apr. 2005 |
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Distribution |
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|
Copy No |
Issue to |
Attention |
Corr. Ref. |
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|
1 |
CEDD |
Mr
H H Yeung |
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2,
3 |
EPD |
Mr
M W Ho |
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4 |
EPD
(LCO) |
Mr
Samson Cheng |
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5 |
Leighton-China
State-Van Oord JV |
Mr
Malcolm Plummer |
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6 |
CRIII Sites/PRE |
Mr
Douglas Miller |
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7 |
Independent
Checker (Environment) |
Mr
Bill Douglas |
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8 |
Environmental
Team Leader |
Ms
Susana Bezy |
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9 |
Office
Copy |
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1. INTRODUCTION
1.1 Basic Project Information
2.1 Works Undertaken
2.2 Environmental Permits
2.3 Environmental Document Submission
2.4 Environmental Meetings
2.5 Environmental Monitoring Locations
3.1 Summary of Impact EM&A Requirements
3.2 Environmental Quality Performance Limits
3.3 Event Action Plan
3.4 Implementation of Environmental Measures
4.1 Impact Monitoring Schedule in March 2005
4.2 Monitoring Methodology
4.3 Monitoring Equipment
4.4 Impact Monitoring Results
5. Environmental
Complaint and Non-Compliance
5.1 Environmental Exceedances
5.2 Environmental Complaint and Prosecution
5.3 Environmental Enquiries
6.1 Key Works for the Coming Month
6.2 Monitoring Schedules for the Coming Months
6.3 Construction Programme for the Next 3 Months
List of Annexes
Annex A Project Organisation / Contact Information
Annex B Contractor’s Work Programme
Annex C Location of Monitoring Stations & Outfalls
Annex D Environmental Quality Performance Limits for Air, Noise and Water Quality
Annex E Event and Action Plan for Air, Noise and Water Quality
Annex F Noise Monitoring Results
Annex G Graphical Representation of Noise Monitoring Results
Annex H Water Quality Monitoring Results
Annex I Graphical Representation of Water Quality Monitoring Results
Annex J Water Quality Exceedance Review
List of Tables
Table 2.1 - Summary of the Environmental License / Permit Status
Table 2.2 - Summary of the Contractor's Environmental Related Document
Submissions to the Engineer’s Representatives (ER)
Table 2.3 - Summary of Environmental Certification Sheet Submissions to
the Environmental Protection Department (EPD)
Table 3.1 -
Summary of Impact EM&A Requirements
Table
4.1 - Water Quality Monitoring Programme (Seawater Intakes Stations)
Table
4.2 - Equipment for Air Quality
Monitoring
Table
4.3 - Noise Monitoring Equipment
Table
4.4 - Equipment Used for Marine Water Quality Monitoring
Table
4.5 - Equipment Calibration Frequencies
Table
4.5 - Summary of Mid-Ebb Results for Marine-Based Stations
Table
4.6 - Summary of Mid-Flood Results for Marine-Based Stations
Table
4.7 - Summary of Mid-Ebb Results for Seawater Intake Stations
Table
4.8 - Summary of Mid-Flood Results for Seawater Intake Stations
Table 5.1 - Summary of Environmental Site Inspections
Table
6.1 - Water Quality Monitoring Programme
|
ACL |
Atkins China Limited |
|
CEDD |
Civil Engineering and Development Department |
|
CRIII |
Central Reclamation Phase III |
|
EIA |
Environmental Impact Assessment |
|
EIAO |
Environmental Impact Assessment Ordinance |
|
EM&A |
Environmental Monitoring and Audit |
|
EPD |
Environmental Protection Department |
|
ER |
Engineer’s Representatives |
|
ET |
Environmental Team |
|
IEC |
Independent Environmental Checker |
|
LCSD |
Leisure and Cultural Services Department |
|
LCSVO-JV |
Leighton China State Van Oord Joint Venture |
|
TDD |
Territory Development Department |
|
TSP |
Total Suspended Particulates |
|
WMP |
Waste Management Plan |
Executive
Summary
The Central Reclamation Phase III (CRIII)
Works, Contract No. HK 12/02, was awarded to Leighton China State Van Oord
Joint Venture (LCSVO-JV) by the Territory Development Department (now called
the Civil Engineering and Development Department (CEDD) after the merger of the
Civil Engineering Department and the Territory Development Department on 1 July
2004), Hong Kong Islands and Islands Development Office. The works under the Contract HK 12/02
commenced on 28 February 2003. Contract
HK 16/03 for the CRIII Hinterland Drainage Improvement Works was awarded to
Wang Kee Construction Co. Ltd. and works for this contract commenced on 17
December 2003.
Atkins China Limited (ACL) has been appointed by CEDD to implement the
Environmental Monitoring and Audit (EM&A) programme that was identified in
the EIA Report for the CRIII Project and is providing Environmental Team (ET)
services during the duration of the construction works.
This is the twentieth Monthly
EM&A Report under the EIAO for the
works specified in Section 1.3 of the CRIII EIA Report. This report summarises the monitoring
results and audit findings of the EM&A programme during the reporting
period from 1 to 31 March 2005.
Environmental Monitoring and Audit Progress
The monthly EM&A programme was undertaken in accordance with the
EM&A Manual. A summary of the
monitoring activities performed in this reporting month is listed below:
·
Environmental site inspections were
undertaken on 3, 10, 17 and 31 March 2005.
·
Noise monitoring was
performed continuously for 24 hours.
·
Water quality monitoring was
undertaken on the following days:
-
2 March 2005
-
4 March 2005
-
7 March 2005
-
9 March 2005
-
11 March 2005
-
14 March 2005
-
16 March 2005
-
18 March 2005
-
21 March 2005
-
23 March 2005
-
25 March 2005
-
28 March 2005
-
30 March 2005
·
The Contractor’s proposal
for temporary storage of caissons for Deliveries 7&8, which constitutes a
variation to FEP Condition 3.2(a), was certified and verified by the ET and IEC
on 18 March 2005.
·
The Contractor’s proposal of
temporary noise barriers for DSD entrustment works at Lung Wui Road were
certified and verified by the ET and IEC on 14 March 2005.
Exceedance of Action and Limit Levels
There was no environmental air quality monitoring required during the
reporting period.
No noise quality exceedances were recorded during March 2005.
Elevated SS levels
were recorded on 4, 7, 23, 25 and 30 March 2005.
The SS exceedances recorded on 4 and 7 March were found to be caused by
the sand filling works at IRAE. All
parties were immediately informed of the exceedances and the Contractor
implemented mitigation measures to reduce and prevent further SS impacts. These measures include replacing the
geotextile for Central Barrack’s seawater intake silt screen using an improved
fixing method and using a revised sand filling method to minimise SS dispersion.
The SS exceedances recorded on 23 and 25 March at
IRAE were investigated and found to be due to high spots of sand fill being
carried away by tidal currents. All
parties were immediately informed of the exceedances and the Contractor carried
out a sounding survey to locate the high spots and subsequently trimmed down
these high spots to mitigate the dispersion effect. The Contractor was advised to carry out preventative actions for
sand filling operations to avoid reoccurrence of this situation in the
future. The Contractor was also reminded
that they are responsible for achieving the water quality requirements for the
project and to ensure that all mitigation measures are implemented effectively.
The SS exceedance recorded on 30 March was
investigated and was found to be due to sand filling and vessel movements near
the PLA intake. The propellers of
marine vessels in the area likely caused the dispersion of SS. However, the affected area is mainly
localised at the eastern end of IRAE since the current flow within IRAE is
low. The Contractor and all relevant
parties were immediately notified of the exceedance and the Contractor has
agreed to slow down the speed of marine vessels whenever possible. Further, the Contractor advised that the PLA
intake would be relocated to the western edge of IRAE in early April 2005,
which would improve water quality at the intake.
No DO exceedances were recorded during the
reporting month.
Complaint Log
No environmental complaints were received during the reporting period.
Notifications of Summons and Prosecutions
There were no notifications of summons or
prosecutions received with regard to the environment during this reporting
period.
Site Inspection and
Audit
Environmental site
inspections for the CRIII project works area were undertaken on 33, 10, 17 and 31 March 2005.
Key Works for the Coming Month
Future key works are as follows:
·
Architectural works for Pier
7;
·
Piling work and preparation
work for concreting at Public Pier West;
·
Pile cap and beam
construction at Pier 8;
·
Cooling water main
construction at Lung Wui Road;
·
Sand filling works at IRAE;
·
Central Terminal Building
(CTB) superstructure and sub-structure works;
·
Seawall construction at
IRAE;
·
Advanced rock filling works
at FRAW and FRAE for temporary caisson storage;
·
In-situ work to caisson and
pumping stations at IRAE;
·
Temporary seawall
construction at IRAE;
·
Filter layer filling behind
caisson units at IRAE;
·
Piling works for Man Yiu
Street Footbridge;
·
Excavation to bored piling
at Eastern Seawall;
·
Rock filling works behind
caisson units at IRAE;
·
Temporary seawater cooling
main construction for Central Barracks and relocation of water quality
monitoring station M4; and
·
Maintenance and necessary
repair works for seawater intake silt screens.
The Main Works Contract HK 12/02 for CRIII commenced on 28th February
2003. Leighton-China State-Van Oord Joint Venture (LCSVO-JV) was awarded the
Contract No. HK 12/02 for the construction of the CRIII Engineering Works. Contract HK 16/03 for the CRIII Hinterland
Drainage Improvement Works was awarded to Wang Kee Construction Co. Ltd. and
works for this contract commenced on 17 December 2003.
Atkins China Limited (ACL) has been commissioned by TDD (now called
CEDD) to undertake the environmental monitoring and audit work for the project
in accordance with the Environmental Permit (EP No. EP-122/2002) issued to TDD
on 7 March 2002. The CRIII Project Organisation
is shown in Annex A.
This is the twentieth monthly
EM&A Report under the EIAO, which presents the results of EM&A
work conducted during the period from 1 to 31 March 2005, inclusive.
The works undertaken during the reporting
month include, but not limited to, pile cap and beam works at Pier 8, sand
filling works and rock profile trimming at IRAE, advanced rock filling at FRAW,
in-situ work for pumping stations, laying of filter layer to rock mound at
IRAE, seawall construction at IRAE, landside cooling watermains works,
superstructure works for the Central Terminal Building (CTB), temporary intake
pile construction for Central Barracks, land piling for the Man Yiu Street
footbridge, void grouting works at Culvert F, rock excavation to bored piling at
Eastern Seawall, PLA temporary intake pipes installation and maintenance and
necessary repair work for seawater intake silt screens.
A summary of the status of all environmental
permits, license, and/or notification to EPD for this project during the
reporting period are presented in Table 2.1.
|
Item |
Item
Description |
Date of
Application |
Permit Status |
|
1 |
Application for Renewal of Admission Ticket for Disposal of Waste to
Landfill (Ref. H2189/U2c/12823/MP/DC/ST/ec). |
23
March 2005 |
- |
|
2 |
Application for Renewal of Construction Noise Permit No GW-RS0453-04
(Ref. H2189/U2c/12794/MP/DC/ST/ec). |
22
March 2005 |
- |
|
3 |
Application for Construction Noise Permit for Public Pier West (Ref.
H2189/U2c/12747/MP/EY/DS/ST/ec). |
19
March 2005 |
- |
|
4 |
Application of Construction Noise Permit for Unloading, Transporting
and Storage of Pre-cast Caisson Units in Victoria Harbour (Ref.
H2189/U2c/12748/MP/EY/ST/ec). |
19
March 2005 |
- |
|
5 |
Test Report for Treated Effluent under Waste Water Discharge Licence
No. EP880/W10/XX0195 (Ref. H2189/U2c/12730/MP/DC/ST/ec). |
18
March 2005 |
- |
|
6 |
Application for Renewal of Construction Noise Permit (GW-RS0610-04) for
IRAW including Pier 7, Pier 8 & Public Pier West (Ref. H2189/U2c/12642/MP/DC/JA/
ST/cm). |
15
March 2005 |
- |
|
7 |
Application for a Permit to Dump Material (Category L Sediment) at Sea
Under the Dumping at Sea Ordinance – Supplementary Information (Ref.
H2189/U2c/12593/MP/ EY/DS/ST/ec). |
11
March 2005 |
- |
|
8 |
Application for a Permit to Dump Material (Category H & M Sediment)
at Sea Under the Dumping at Sea Ordinance – Supplementary Information (Ref.
H2189/U2c/12594/MP/ EY/DS/ST/ec). |
11
March 2005 |
- |
|
9 |
Application of Construction Noise Permit for IRAE, FRAE & Caissons
at IRAE (Ref. H2189/U2c/12567/MP/EY/DS/ ST/ec). |
10
March 2005 |
- |
|
10 |
Application for a Permit to Dump Material (Category L Sediment) at Sea
Under the Dumping at Sea Ordinance – Supplementary Information (Ref.
H2189/U2c/12550/MP/ ET/DS/ST/wl). |
9 March
2005 |
- |
|
11 |
Application for a Permit to Dump Material (Category H & M Sediment)
at Sea Under the Dumping at Sea Ordinance – Supplementary Information (Ref.
H2189/U2c/12551/MP/ ET/DS/ST/wl). |
9 March
2005 |
- |
|
12 |
Public Notice for Application of Licence under Water
Pollution Control Ordinance (Ref. H2189/U2c/12501/ MP/EY/DS/JA/ST/ec). |
7 March
2005 |
- |
|
13 |
Surrender of Existing Construction Noise Permit No.
GW-RS0044-05 (Ref. H2189/U2c/12426/MP/DC/CKA/ST/ec). |
3 March
2005 |
|
|
14 |
Application for Renewal of Construction Noise Permit No. GW-RS0031-05
(Ref. H2189/U2c/12380/MP/EY/DS/ ST/ec). |
1 March
2005 |
- |
A summary of the status of the submissions provided
during the reporting month is presented in Table 2.2.
|
Item |
Document
Title |
Version |
Date of
Submission to ER |
|
1 |
New
Construction Noise Permit GW-RS0170-05 (Ref. H2189/C1/12856/MP/EY/ST/atm). |
- |
24 March 2005 |
|
2 |
New
Construction Noise Permit GW-RS0140-05 (Ref. H2189/C1/12750/MP/DC/ST/atm). |
- |
19 March 2005 |
|
3 |
New
Marine Dumping Permits (EP/MD/05-0129 & EP/MD/05-130) (Ref.
H2189/C1/12719/MP/EY/JA/ ST/atm). |
- |
17 March 2005 |
|
4 |
Temporary
Noise Barrier for DSD Entrustment Works at Lung Wui Road (Ref.
H2189/C1/12669/MP/DC/CKA/ ST/atm). |
- |
16 March 2005 |
|
5 |
Daily
Collection of Floating Debris (Ref. H2189/C1/ 12660/MP/EY/ST/atm). |
- |
15 March 2005 |
|
6 |
New
Construction Noise Permits GW-RS0125-05 & GW-RS0126-05 (Ref.
H2189/C1/12563/MP/DC/ST/atm). |
- |
10 March 2005 |
|
7 |
Temporary
Caisson Storage for Delivery 7 & Delivery 8 (Ref.
H2189/C1/12475/MP/EY/ST/atm). |
- |
5 March 2005 |
|
8 |
New
Construction Noise Permits GW-RS0125-05 |
- |
2 March 2005 |
A summary of the Environmental Certification Sheet submissions to EPD
during the reporting month is presented in Table 2.3.
|
No |
Certification
Subject |
Letter Ref. |
Date of
Submission to EPD |
Approved
Status |
|
1 |
Temporary Noise Barrier for DSD Entrustment
Works at Lung Wui Road |
3128/HK12/02
M45/200/OC7018/SB/al |
23
March 2005 |
- |
|
2 |
Temporary Caisson Storage for Delivery 7&8 |
3128/HK12/02
M45/200/OC7002/SB/al |
18
March 2005 |
- |
|
3 |
Certification of Monthly Environmental Report
No. 19 - February 2005 |
3128/NK12/02
M45/200/OC6976/AC/al |
14
March 2005 |
- |
An environmental meeting was held on 7 March
2005 between the Contractor, CEDD, EPD, ER and ET to discuss the excavated
material from bore piling works at the Eastern Seawall. During the meeting, EPD and the Contractor
agreed on a method to determine the interface profile between contaminated and
uncontaminated sediments. The
Contractor was also asked to suspend all excavation works until the necessary
dumping permits have been issued.
The Contractor met with the ER and ET on 10
March 2005 to discuss sand filling operations and the water quality exceedances
recorded in early March. During the
meeting, the Contractor agreed to replace the geotextile covering the silt
screens at monitoring station M4 and M5.
The Contractor also advised that they would revise the fixing method of
the geotextile to the silt screens to improve their effectiveness. In addition, the Contractor advised that
their method of sand filling has changed to placing sand on the existing sand
bund rather than the previous bottom dumping method. This method should reduce SS dispersion during sand filling
operations.
Another environmental meeting was held
amongst the Contractor, RE and ET on 29 March 2005 to discuss the Contractor’s
proposal for the temporary outfall of Culvert J. During the meeting, the proposal for temporary storage of
remaining caisson units in IRAW and FRAE was also discussed. Initial comments on the proposals were
provided to the Contractor and they are in the process of making amendments to
the proposal.
The environmental monitoring locations are
provided in Annex C.
The EM&A programme requires environmental monitoring for air
quality, noise, water quality, waste management and landscape and visual
aspects as specified in the CRIII Project EIA.
The EM&A requirements for each issue area are described in
subsequent sections including:
·
All required monitoring parameters;
·
Action and Limit Levels; and
·
Event-Action Plans.
A summary of impact EM&A requirements is presented in Table
3.1.
|
Descriptions |
Locations |
Frequencies |
Duration |
|||
|
TSP |
24-Hour
TSP |
2
Locations |
Once
every 6 days |
During
dust generating construction works |
||
|
1-Hour
TSP |
2
Locations |
Three
times in every 6 days |
During
dust generating construction works |
|||
|
Noise |
Leq (30 mins), L10, L90, |
1
Location |
Continuous
measurements |
Two
weeks before Construction and During Construction |
||
|
Water
Quality |
Dissolved
Oxygen; Salinity; Temp; Suspended
Solids; Turbidity. |
14
Locations |
3 times
a week, Mid-ebb/flood tides |
During
Marine Works |
||
|
Waste |
On-Site
Waste Audit |
Active
Work Sites |
Periodically |
During
Construction |
||
|
On-Site
Waste Inspection |
||||||
|
Landscape
and Visual |
Audits
to ensure effective implementation of mitigation measures |
During
Construction |
||||
|
General
Site Conditions |
Environmental Site Inspection |
Works
areas and areas affected by works |
Periodically |
During
Construction |
||
Environmental Quality Performance Limits for air, noise and water
quality as provided in the Baseline Monitoring Report (Final) are shown in
Annex D.
The Event Action Plans for air, noise and water quality as provided in
the Baseline Monitoring Report (Final) are shown in Annex E.
The Contractor is required to implement mitigation measures listed in
the EIA Report, EM&A Manual and Further Environmental Permit. During routine site inspections, the
Contractor's implementation of mitigation measures is reviewed. With regard to mitigation measures for water
quality, the Contractor has installed floating type impervious silt curtains
for sand filling works at IRAE to reduce SS dispersion. Further, the Contractor carried out daily
visual inspection of the silt screens for seawater intakes. Floating debris in the project area was
collected at least once everyday and in the water body near cooling water
intakes debris was collected at least three times a day. Bi-weekly diving inspections for the silt
screens were also carried out during the reporting month.
Regular site inspections were carried out
to assess whether the project's environmental protection and pollution control
measures are in compliance with the contract specifications. Inspections were conducted on 3, 10, 17 and 31 March 2005.
Air quality monitoring has not commenced
yet as no significant work areas or construction activities with the potential
to impact air quality are within range of the closest air quality sensitive
receivers (ASR).
Continuous 24-hour noise monitoring was
conducted during this reporting period.
Impact water quality monitoring at all
monitoring stations was undertaken during this reporting month. The water quality monitoring schedule for
March 2005 is presented in Table 4.1.
|
Date of Sampling |
Tidal State |
Timing of Sampling |
|
2 March 2005 |
Mid Ebb |
14:47 – 17:55 |
|
Mid Flood |
08:39 – 11:25 |
|
|
4 March 2005 |
Mid Ebb |
15:25 – 18:15 |
|
Mid Flood |
09:08 – 12:20 |
|
|
7 March 2005 |
Mid Ebb |
09:03 – 12:32 |
|
Mid Flood |
13:46 – 16:55 |
|
|
9 March 2005 |
Mid Ebb |
10:35 – 13:40 |
|
Mid Flood |
15:13 – 18:10 |
|
|
11 March 2005 |
Mid Ebb |
12:08 – 15:15 |
|
Mid Flood |
07:26 – 10:50 |
|
|
14 March 2005 |
Mid Ebb |
13:19 – 16:14 |
|
Mid Flood |
07:36 – 10:58 |
|
|
16 March 2005 |
Mid Ebb |
14:48 – 17:39 |
|
Mid Flood |
08:24 – 11:14 |
|
|
18 March 2005 |
Mid Ebb |
15:23 – 18:26 |
|
Mid Flood |
07:36 – 10:40 |
|
|
21 March 2005 |
Mid Ebb |
15:23 – 17:41 |
|
Mid Flood |
08:45 – 11:42 |
|
|
23 March 2005 |
Mid Ebb |
09:57 – 12:28 |
|
Mid Flood |
15:19 – 17:53 |
|
|
25 March 2005 |
Mid Ebb |
10:20 – 12:53 |
|
Mid Flood |
15:25 – 17:58 |
|
|
28 March 2005 |
Mid Ebb |
12:11 – 14:43 |
|
Mid Flood |
07:20 – 10:32 |
|
|
30 March 2005 |
Mid Ebb |
13:06 – 16:26 |
|
Mid Flood |
06:55 – 10:40 |
Air quality monitoring will be performed in
accordance with the methodology described in the EM&A Manual once
construction activities requiring air quality monitoring commence. The locations of the monitoring stations at
City Hall and PLA Headquarters are shown in Annex C.
Continuous 24-hour noise monitoring was performed
in accordance with the methodology described in the EM&A Manual in the
reporting period. The location of the noise monitoring station at City Hall is
shown in Annex C.
Water quality monitoring was performed in
accordance with the methodology described in the EM&A Manual. Monitoring for the reporting month was
conducted at all stations, which comprises of 6 marine-based stations and 8
seawater intake stations. The locations
of the monitoring stations are shown in Annex C.
The equipment that is used
for air quality monitoring is listed in Table 4.2.
|
Parameter Measured |
Equipment |
|
24-Hour Sampling |
High Volume Sampler Model
GS2310 by Anderson Instruments to be used for both monitoring stations. |
|
1-Hour Sampling |
MicroDust pro Aerosol
Monitoring System to be used for both monitoring locations. |
The equipment used for
continuous noise quality monitoring is listed in Table 4.3.
|
Equipment |
Model |
|
Integrated Sound Level Meter (SLM) |
B&K 2238 |
|
Calibrator |
B&K 4231, Class 1 |
The equipment that was used
for water quality monitoring is listed in Table 4.4.
|
Parameter Measured |
Equipment |
|
Dissolved Oxygen and Temperature Measuring Equipment |
A Dissolved Oxygen meter YSI model 58 was used. ·
This
instrument was portable and weatherproof and used a DC power source. The equipment was capable of measuring: ·
DO levels
in the range of 0-20 mg/l and 0-200% saturation; and ·
Temperature
of between 0 - 45 degree Celsius. ·
The
equipment had a membrane electrode with an automatic temperature compensation
complete with a cable. In addition, a Wirling Psychrometer was used as a
reference thermometer during the sampling. |
|
Turbidity Measurement Instrument |
|
|
PH |
A MP125 pH Meter from Mettler Toledo was used to measure pH. |
|
Salinity / Conductivity Meter |
A Salinity / Conductivity meter YSI model 63 and model 30 was used for determining salinity concentrations. |
|
Sample Containers and Storage |
Water samples for SS analysis were stored in high density polythene bottles with no preservative added, packed in ice and delivered to the laboratory, and analysed as soon as possible after collection. |
The calibration frequencies
of the monitoring equipment are provided in Table 4.5.
|
Equipment |
Calibration Frequency |
Latest Calibration Date |
|
Dissolved Oxygen Meter |
Every 6 months |
28 January 2005 |
|
Turbidimeter |
Every 3 months for
secondary standards; meter is calibrated prior to each measurement to the
secondary standards |
26 January 2005 |
|
pH Meter |
Prior to each sampling day |
- |
|
Pyschrometer |
Every 6 months |
19 February 2005 |
|
Integrated SLM |
Every year |
20 August 2004 |
No air quality monitoring work was undertaken
during the reporting period as no
significantly dusty construction activities with the potential to impact air
quality are within range of the closest air quality sensitive receivers.
Noise quality monitoring work was undertaken
during the reporting period. The noise
monitoring results are provided in Annex F. Graphical representation of the noise
monitoring data is provided in Annex G.
Water quality monitoring was undertaken at
all water quality monitoring locations during the reporting period. The water quality monitoring results from
this reporting period are presented in Annex H. Graphical representation of the water quality data is provided in
Annex
I. Summaries of the results are
provided in Tables 4.5 to 4.9.
Marine-Based Stations
Monitoring stations M8 and M10 were selected as the marine-based impact
stations as they are located outside the predicted influence of the dredging
and reclamation works. The detection of
water quality degradation at these two stations may indicate that project
marine works are adversely affecting water quality in Victoria Harbour. Stations M7 and M9 are within the expected
influence of the reclamation activities and are located along the works area
boundary (or extent of the predicted sediment plume). As such, M7 and M9 are used as indicator stations to note any
significant elevations in SS, turbidity or reductions in DO that may affect the
marine-based impact monitoring stations.
Table 4.5 is a summary of the marine-based stations
monitoring results during mid-ebb tide.
|
Station |
|
Parameter |
||||
|
DO (S&M) mg/L |
DO (B) mg/L |
DO % Sat. (DA) |
Turbidity (DA) NTU |
SS (DA) mg/L |
||
|
C1 |
min |
6.5 |
6.3 |
79 |
2.6 |
3 |
|
max |
7.8 |
7.1 |
94 |
6.1 |
7 |
|
|
avg |
6.9 |
6.6 |
84 |
4.0 |
5 |
|
|
sd |
0.3 |
0.2 |
4 |
0.9 |
1 |
|
|
C2 |
min |
6.3 |
6.1 |
76 |
2.4 |
3 |
|
max |
7.8 |
7.2 |
94 |
4.2 |
6 |
|
|
avg |
7.0 |
6.7 |
85 |
3.3 |
5 |
|
|
sd |
0.4 |
0.3 |
5 |
0.7 |
1 |
|
|
M7 |
min |
6.3 |
6.1 |
77 |
2.5 |
3 |
|
max |
7.1 |
7.4 |
90 |
5.4 |
8 |
|
|
avg |
6.5 |
6.5 |
81 |
4.1 |
5 |
|
|
sd |
0.3 |
0.3 |
4 |
0.8 |
1 |
|
|
M8 |
min |
6.3 |
6.2 |
77 |
2.6 |
4 |
|
max |
8.0 |
7.7 |
99 |
5.2 |
7 |
|
|
avg |
6.8 |
6.7 |
84 |
3.9 |
5 |
|
|
sd |
0.4 |
0.4 |
6 |
0.8 |
1 |
|
|
M9 |
min |
6.3 |
6.1 |
76 |
2.5 |
4 |
|
max |
7.6 |
7.7 |
96 |
6.0 |
7 |
|
|
avg |
6.6 |
6.6 |
82 |
4.5 |
5 |
|
|
sd |
0.3 |
0.4 |
5 |
1.3 |
1 |
|
|
M10 |
min |
6.4 |
6.3 |
78 |
2.6 |
3 |
|
max |
7.9 |
7.4 |
96 |
5.2 |
8 |
|
|
avg |
6.7 |
6.7 |
83 |
3.8 |
5 |
|
|
sd |
0.4 |
0.3 |
5 |
0.8 |
1 |
|
As Table 4.5 shows, DO levels at marine-based impact
stations (M8 & M10) in the surface to middle layer during mid-ebb survey
ranged between 6.2 and 8.0 mg/L with an average value of 6.8 mg/L and DO
measurements in the bottom layer ranged from 6.2 to 7.7 mg/L with an average
level of 6.7 mg/L. Similar DO levels
were recorded at the control stations at which DO levels in the surface to middle
layer during mid-ebb survey ranged from 6.3 to 7.8 mg/L with an average value
of around 6.9 mg/L; DO measurements in the bottom layer ranged between 6.1 and
7.2 mg/L with an average level of 6.7 mg/L.
SS levels during mid-ebb tide ranged from 3 to 8 mg/L with an average
value of 5 mg/L at the marine-based impact stations (M8 & M10), which is
comparable to results from the control stations in which SS content ranged from
3 to 7 mg/L with an average of 5 mg/L.
Generally, the results showed no clear gradient effect, which indicates
that marine works are not adversely affecting marine water quality outside the
work site boundary in Victoria Harbour.
Marine water quality at impact monitoring stations was found to be
similar to that at the control stations also indicating that project marine
works were generally not adversely affecting water quality in Victoria Harbour.
Table 4.6 is a summary of monitoring results from
marine-based stations during mid-flood tide.
|
Station |
|
Parameter |
||||
|
DO (S&M) mg/L |
DO (B) mg/L |
DO % Sat. (DA) |
Turbidity (DA) NTU |
SS (DA) mg/L |
||
|
C1 |
min |
6.6 |
6.3 |
79 |
2.4 |
3 |
|
max |
7.9 |
8.0 |
99 |
5.6 |
7 |
|
|
avg |
6.9 |
6.8 |
85 |
3.6 |
5 |
|
|
sd |
0.4 |
0.5 |
6 |
0.9 |
1 |
|
|
C2 |
min |
6.6 |
6.4 |
80 |
2.0 |
4 |
|
max |
7.6 |
7.4 |
94 |
4.5 |
6 |
|
|
avg |
7.0 |
6.7 |
86 |
3.2 |
5 |
|
|
sd |
0.3 |
0.3 |
4 |
0.7 |
1 |
|
|
M7 |
min |
5.8 |
5.7 |
74 |
3.0 |
3 |
|
max |
6.7 |
7.0 |
84 |
5.7 |
7 |
|
|
avg |
6.3 |
6.4 |
79 |
4.3 |
5 |
|
|
sd |
0.3 |
0.4 |
4 |
0.8 |
1 |
|
|
M8 |
min |
6.3 |
6.4 |
79 |
2.7 |
3 |
|
max |
7.5 |
7.3 |
92 |
5.2 |
9 |
|
|
avg |
6.8 |
6.7 |
84 |
3.7 |
5 |
|
|
sd |
0.3 |
0.3 |
3 |
0.9 |
2 |
|
|
M9 |
min |
5.0 |
4.9 |
64 |
2.7 |
3 |
|
max |
7.0 |
7.1 |
87 |
5.3 |
7 |
|
|
avg |
6.4 |
6.3 |
79 |
4.1 |
5 |
|
|
sd |
0.5 |
0.5 |
6 |
0.8 |
1 |
|
|
M10 |
min |
5.2 |
5.2 |
67 |
2.5 |
3 |
|
max |
7.2 |
7.3 |
89 |
5.0 |
7 |
|
|
avg |
6.6 |
6.5 |
81 |
3.6 |
5 |
|
|
sd |
0.5 |
0.5 |
5 |
0.7 |
1 |
|
During mid-flood tide, DO levels at marine-based impact stations (M8
& M10) in the surface to middle layer ranged from 5.2 to 7.5 mg/L with an
average level of 6.7 mg/L while DO values in the bottom layer ranged between
5.2 and 7.3 mg/L with an average of 6.7 mg/L.
Similar DO concentrations were recorded at the control stations in the
surface to middle layer during mid-flood survey ranged between 6.6 and 7.9 mg/L
with an average value of 7.0 mg/L and DO results in the bottom layer ranged
from 6.3 and 8.0 mg/L with an average of 6.7 mg/L.
SS content ranged between 3 and 9 mg/L (for stations M8 & M10) with
an average of 5 mg/L during mid-flood tide and ranged from 3 to 7 mg/L with an
average value of 5 mg/L at the control stations. Again, the results showed no clear gradient effect and no
significant difference between control stations and marine-based impact
stations. Therefore, the marine-based
station results indicate that during the reporting month the dredging works
were not adversely affecting water quality outside the work site boundary.
Seawater Intake Stations
Table 4.7 is a summary of monitoring results from seawater
intake stations during mid-ebb tide.
|
Station |
|
Parameter |
|||
|
DO mg/L |
DO % Sat. |
Turbidity NTU |
SS mg/L |
||
|
M1 |
min |
5.8 |
68 |
5.1 |
4 |
|
max |
6.5 |
82 |
9.1 |
11 |
|
|
avg |
6.2 |
75 |
6.4 |
8 |
|
|
sd |
0.2 |
4 |
1.2 |
2 |
|
|
M2 |
min |
5.5 |
64 |
4.3 |
6 |
|
max |
6.5 |
79 |
12.8 |
13 |
|
|
avg |
5.9 |
72 |
6.9 |
9 |
|
|
sd |
0.3 |
4 |
2.1 |
2 |
|
|
M3 |
min |
5.2 |
49 |
3.6 |
4 |
|
max |
6.6 |
80 |
6.8 |
11 |
|
|
avg |
5.9 |
72 |
5.3 |
7 |
|
|
sd |
0.6 |
8 |
1.0 |
2 |
|
|
M4 |
min |
5.8 |
69 |
2.9 |
4 |
|
max |
6.3 |
79 |
13.5 |
19 |
|
|
avg |
6.0 |
73 |
6.6 |
9 |
|
|
sd |
0.2 |
3 |
2.8 |
4 |
|
|
M5 |
min |
5.6 |
67 |
4.5 |
5 |
|
max |
6.5 |
78 |
20.6 |
23 |
|
|
avg |
6.0 |
73 |
9.1 |
12 |
|
|
sd |
0.2 |
3 |
5.0 |
6 |
|
|
M6 |
min |
5.8 |
67 |
3.4 |
5 |
|
max |
6.4 |
81 |
10.1 |
12 |
|
|
avg |
6.1 |
75 |
5.2 |
7 |
|
|
sd |
5.8 |
67 |
3.4 |
5 |
|
|
M11 |
min |
5.9 |
69 |
3.3 |
4 |
|
max |
6.8 |
84 |
7.8 |
9 |
|
|
avg |
6.3 |
76 |
5.0 |
7 |
|
|
sd |
0.3 |
4 |
1.3 |
1 |
|
|
M12 |
min |
5.8 |
68 |
2.9 |
5 |
|
max |
6.3 |
80 |
7.0 |
9 |
|
|
avg |
6.1 |
74 |
4.6 |
6 |
|
|
sd |
0.1 |
4 |
1.2 |
1 |
|
Seawater intake results during mid-ebb tide, Table 4.7, show that DO levels ranged from 4.2 to 6.8 mg/L with an average of 6.1 mg/L. SS ranged between 4 and 23 mg/L with an average value of 8 mg/L. Elevated SS levels were recorded on 4 and 25 March during mid-ebb tide sampling.
Table 4.8 is a summary of monitoring results from seawater
intake stations during mid-flood tide.
|
Station |
|
Parameter |
|||
|
DO mg/L |
DO % Sat. |
Turbidity NTU |
SS mg/L |
||
|
M1 |
min |
5.4 |
68 |
4.5 |
5 |
|
max |
6.7 |
81 |
9.0 |
12 |
|
|
avg |
6.1 |
74 |
6.4 |
8 |
|
|
sd |
5.4 |
68 |
4.5 |
5 |
|
|
M2 |
min |
5.5 |
67 |
3.6 |
5 |
|
max |
6.5 |
78 |
8.8 |
16 |
|
|
avg |
6.0 |
73 |
6.3 |
9 |
|
|
sd |
0.3 |
5 |
1.7 |
3 |
|
|
M3 |
min |
5.6 |
64 |
3.6 |
5 |
|
max |
6.4 |
80 |
9.1 |
14 |
|
|
avg |
5.9 |
72 |
5.7 |
8 |
|
|
sd |
0.3 |
5 |
1.7 |
3 |
|
|
M4 |
min |
5.4 |
65 |
4.4 |
5 |
|
max |
6.4 |
77 |
60.6 |
77 |
|
|
avg |
5.9 |
72 |
11.4 |
15 |
|
|
sd |
0.3 |
4 |
15.2 |
19 |
|
|
M5 |
min |
4.9 |
63 |
3.2 |
4 |
|
max |
6.3 |
77 |
6.9 |
13 |
|
|
avg |
5.8 |
70 |
4.6 |
6 |
|
|
sd |
0.4 |
5 |
1.2 |
2 |
|
|
M6 |
min |
5.4 |
62 |
3.1 |
4 |
|
max |
6.1 |
77 |
6.6 |
12 |
|
|
avg |
5.9 |
71 |
4.9 |
7 |
|
|
sd |
0.2 |
5 |
1.2 |
3 |
|
|
M11 |
min |
5.6 |
68 |
2.8 |
4 |
|
max |
6.5 |
81 |
6.9 |
9 |
|
|
avg |
6.1 |
74 |
4.9 |
6 |
|
|
sd |
0.2 |
5 |
1.0 |
2 |
|
|
M12 |
min |
5.5 |
67 |
2.5 |
4 |
|
max |
6.5 |
82 |
6.7 |
10 |
|
|
avg |
6.0 |
73 |
4.7 |
6 |
|
|
sd |
0.3 |
4 |
1.1 |
2 |
|
No waste management audit was scheduled
within this reporting period. The
arrangement of waste management audit is detailed in the Waste Management Plan.
As the major construction activities undertaken during the reporting month were related to marine works, the landscape and visual impacts are considered to be minimal.
The total number of exceedances for air,
noise and water quality are presented in following sections.
No air quality monitoring work was undertaken
during the reporting period.
No noise quality exceedances were recorded during the reporting
period.
Water quality was found to
be generally good during the reporting month.
However, elevated SS levels were
recorded on 4, 7, 23, 25 and 30 March 2005.
The SS exceedances recorded on 4 and 7 March
were found to be caused by the sand filling works at IRAE. All parties were immediately informed of the
exceedances and the Contractor implemented mitigation measures to reduce and
prevent further SS impacts. These
measures include replacing the geotextile for Central Barrack’s seawater intake
silt screen using an improved fixing method and using a revised sand filling
method to minimise SS dispersion.
The SS exceedances recorded
on 23 and 25 March were investigated and found to be due to high spots of sand
fill behind the PLA caisson units in IRAE.
The dispersion of theses high spots of sand fill was likely assisted
with the tidal current. All parties
were immediately informed of the exceedances and the Contractor carried out a
sounding survey to locate the high spots and subsequently trimmed down these
high spots to mitigate the dispersion effect.
The Contractor was advised to carry out preventative actions for sand
filling operations to avoid reoccurrence of this situation in the future. The Contractor was also reminded that they
are responsible for achieving the water quality requirements for the project
and to ensure that all mitigation measures are implemented effectively.
The SS exceedance recorded
on 30 March was investigated and was found to be due to sand filling and vessel
movements near the PLA intake. The
propellers of marine vessels in the area likely caused the dispersion of
SS. However, the affected area is
mainly localised at the eastern end of IRAE since the current flow within IRAE
is low. The Contractor and all relevant
parties were immediately notified of the exceedance and the Contractor has
agreed to slow down the speed of marine vessels whenever possible. Further, the Contractor advised that the PLA
intake would be relocated to the western edge of IRAE in early April 2005,
which would improve water quality at the intake.
No DO exceedances were recorded during the
reporting month.
No non-compliances with regard to waste
management were recorded in the reporting month.
No non-compliance with regard to landscape
and visual aspects were recorded in the reporting month.
No environmental non-compliances were found
during environmental site inspections conducted during the reporting
period.
A summary of the findings from the site inspections
conducted during the reporting month is provided in Table 5.1.
|
Date of
Inspection |
Observations |
Action(s) |
|
3
March 2005 |
The additional silt curtain for the PLA
seawater intake was not securely fixed to the seawall. |
The Contractor was asked to secure the
floating silt curtain. |
|
10
March 2005 |
No deficiencies were observed |
No actions are required. |
|
An oil container at CR-13 was found
without a drip tray. |
The Contractor provided a drip tray for
the container. |
|
|
A concrete pump truck parked at IRAW was
found to be leaking diesel fuel. |
The Contractor was asked to immediately
repair the fuel leak and to properly clean the spillage area. |
|
|
Some leaked oil/grease was found
underneath a compressor at IRAW. |
The Contractor was asked to repair the
leaking equipment and to provide a spill tray for the compressor. |
|
|
23
March 2005 |
No deficiencies were observed |
No actions are required. |
|
30
March 2005 |
No deficiencies were observed |
No actions are required. |
No environmental complaints and no prosecution notices or summons were
received during the reporting month.
No environmental enquiries were received
during the reporting month.
The key issues to be considered in the coming
month include the following:
·
Architectural works for Pier
No. 7;
·
Pile shaft excavation and
obstruction removal at Public Pier West;
·
Piling works including pile
cap and beam construction at Pier 8;
·
Sand filling at IRAE;
·
Land piling works and
substructure construction for the Central Terminal Building (CTB);
·
Land piling work for the Man
Yiu Street Footbridge;
·
Seawall construction at
IRAE;
·
PLA temporary intake pipe construction;
·
Cooling watermains work at
Lung Wui Road;
·
In-situ work to installed
caissons and pumping stations at IRAE;
·
Dredging and rock filling
for temporary storage of caisson units at FRAW;
·
Install filter layer to rock
mound at IRAE;
·
Remedial work for Culvert F;
·
Rock excavation to bored
piling at Eastern Seawall;
·
Ballast material filling to
caisson units and IRAE;
·
Temporary seawater cooling
main construction for Central Barracks and relocation of water quality
monitoring station M4; and
·
Maintenance and necessary
repair works for seawater intake silt screens.
Based on the Contractor’s programme, the
Environmental Monitoring Programme for the next three months is planned as
follows:
TSP (24 hr and 1 hr monitoring)
Upon commencement of significant dust generating
activities within range of the closest air quality sensitive receiver,
dependent upon the Contractor’s programme.
Noise
(Continuous Measurements)
The noise monitoring programme throughout the
entire construction period is 24-hour continuous.
Water Quality Monitoring
The water quality monitoring schedule for the
upcoming months is provided in the following table.
|
Sampling Time |
||
|
1 April 2005 |
09:03 |
16:58 |
|
4 April 2005 |
09:20 |
13:43 |
|
6 April 2005 |
11:01 |
16:23 |
|
8 April 2005 |
12:00 |
17:00 |
|
11 April 2005 |
08:30 |
13:55 |
|
13 April 2005 |
08:30 |
15:08 |
|
15 April 2005 |
08:30 |
16:33 |
|
18 April 2005 |
08:30 |
17:00 |
|
20 April 2005 |
10:26 |
15:28 |
|
22 April 2005 |
11:18 |
17:00 |
|
25 April 2005 |
08:30 |
13:30 |
|
27 April 2005 |
08:30 |
13:59 |
|
29 April 2005 |
08:30 |
15:45 |
|
2 May 2005 |
08:30 |
17:00 |
|
4 May 2005 |
09:52 |
15:16 |
|
6 May 2005 |
11:10 |
17:00 |
|
9 May 2005 |
08:30 |
13:30 |
|
11 May 2005 |
08:30 |
14:06 |
|
13 May 2005 |
08:30 |
15:04 |
|
16 May 2005 |
08:30 |
17:00 |
|
18 May 2005 |
08:53 |
13:37 |
|
20 May 2005 |
10:09 |
16:06 |
|
23 May 2005 |
11:46 |
17:00 |
|
25 May 2005 |
08:30 |
13:30 |
|
27 May 2005 |
08:30 |
14:56 |
|
30 May 2005 |
10:37 |
17:00 |
|
1 June 2005 |
08:30 |
13:51 |
|
3 June 2005 |
10:07 |
16:16 |
|
6 June 2005 |
12:00 |
17:00 |
|
8 June 2005 |
12:00 |
17:30 |
|
10 June 2005 |
08:30 |
14:19 |
|
13 June 2005 |
08:30 |
17:00 |
|
15 June 2005 |
10:46 |
17:00 |
|
17 June 2005 |
08:35 |
14:28 |
|
20 June 2005 |
10:41 |
17:00 |
|
22 June 2005 |
12:00 |
17:00 |
|
24 June 2005 |
08:30 |
13:59 |
|
27 June 2005 |
09:33 |
16:35 |
|
29 June 2005 |
12:00 |
17:00 |
The construction programme for the next 3 months is provided in Annex
B and will be updated by the Contractor.
The ET will follow the Contractor’s proposed programme to ensure the compliance of environmental performance and proper implementation of all necessary mitigation measures.
Generally, the ambient water
quality was found to be in generally good condition for March 2005. However, exceedances of the water quality
criteria were recorded on four occasions.
SS exceedances were recorded
on 4, 7, 23, 25 and 30 March 2005. The SS exceedances recorded on 4 and 7 March
were found to be caused by the sand filling works at IRAE while the exceedances
on 23 and 25 March were found to be due to high spots
of sand fill being carried away by tidal currents. The SS exceedance
recorded on 30 March was investigated and was found to be due to sand filling
works and vessel movements near the PLA intake. All parties were immediately informed of the
exceedances and the Contractor implemented mitigation measures to reduce and
prevent further SS impacts. These
measures include replacing the geotextile for Central Barrack’s seawater intake
silt screen using an improved fixing method and using a revised sand filling
method to minimise SS dispersion. In
addition, the Contractor carried out a sounding
survey to locate the high spots and subsequently trimmed down these high spots
to mitigate the dispersion effect.
Marine vessel movements would also be reduced whenever possible to
minimise the dispersion of SS near sand filling areas.
The Contractor noted that
the PLA intake would be relocated to the western edge of IRAE in early April
2005. Monitoring station M4 would be
relocated in tandem with this change.
The relocation would improve water quality at the intake.
The Contractor was advised
to carry out preventative actions for sand filling operations to avoid
reoccurrence of similar situations in the future. The Contractor was also reminded that they are responsible for
achieving the water quality requirements for the project and to ensure that all
mitigation measures are implemented effectively.
No DO exceedances were recorded during the
reporting month.
The monitoring work for this
reporting month has been independently verified by the Independent Environmental
Checker (IEC) and has been found to be in compliance with the requirements of
the EM&A programme.