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Client |
Civil
Engineering Development Department, Hong Kong |
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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. |
3128-REP-215-00 |
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Date of Issue |
17 August 2005 |
File
Ref. L:\S-proj\CR3\CR3.NEW\3128\
Reports\0215.doc |
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Report Title |
Central
Reclamation, Phase III Quarterly
EM&A Report No. 8 May
through July 2005 |
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Prepared
by : |
David Sanderson, ACL - Senior Consultant |
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17 Aug 2005 |
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Reviewed by: |
Susana
Bezy, ACL – ET Leader |
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17
Aug 2005 |
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Authorised by : |
Jon
Varndell, ACL – Project Mgr |
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17
Aug 2005 |
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Distribution |
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Copy No |
Issue to |
Attention |
Corr. Ref. |
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1 |
CEDD |
Mr
Eric CW Fung |
3128/M45/200/OC7271/SB/DS |
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2, 3 |
EPD |
Mr M
W Ho |
3128/M45/200/OC7271/SB/DS |
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4 |
EPD
(LCO) |
Mr
Allan Hung |
3128/M45/200/OC7271/SB/DS |
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5 |
Leighton-China
State-Van Oord JV |
Mr
Malcolm Plummer |
3128/M45/200/OC7271/SB/DS |
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6 |
CRIII
Sites/PRE |
Mr
Douglas Miller |
3128/M45/200/OC7271/SB/DS |
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7 |
Independent
Checker (Environment) |
Mr Bill
Douglas |
3128/M45/200/OC7271/SB/DS |
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8 |
Environmental
Team Leader |
Ms
Susana Bezy |
3128/M45/200/OC7271/SB/DS |
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9 |
Office
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1. Introduction................................................................................................................ 1
1.1 Basic Project Information......................................................................................... 1
1.2 Project Organisation and Management Structure............................................. 1
1.3 Works Undertaken.................................................................................................... 1
2. EM&A Requirements................................................................................................. 3
2.1 Summary of Impact
EM&A Requirements............................................................. 3
2.2 Environmental Quality
Performance Limits........................................................... 4
2.3 Event Action Plan...................................................................................................... 4
3. Environmental Status................................................................................................. 5
3.1 Implementation of
Environmental Measures....................................................... 5
3.2 Environmental
Monitoring Locations..................................................................... 5
3.3 Air Quality Monitoring
Results.................................................................................. 5
3.4 Noise Quality
Monitoring Results............................................................................. 5
3.5 Water Quality
Monitoring Results........................................................................... 5
3.6 Solid and Liquid Waste
Management Status........................................................ 5
3.7 Landscape and Visual
Audit................................................................................... 5
4. Environmental Complaint and Non-Compliance.............................................. 6
4.1 Environmental Exceedances.................................................................................. 6
4.2 Non Compliance....................................................................................................... 7
4.3 Summary of Actions Taken by the Contractor..................................................... 7
4.4 Environmental Enquiries........................................................................................... 8
4.5 Environmental
Complaints and Prosecutions....................................................... 8
4.6 Record of Environmental Complaints and
Summons & Prosecutions.............. 9
5. Conclusion............................................................................................................... 11
List of Annexes
Annex A Project Organisation/ Contact Information
Annex B Quality Performance Limits for Air, Noise and Water Quality
Annex C Event and Action Plans for Air, Noise and Water Quality
Annex D Monitoring Stations Locations
Annex E Contractor's Works Programme
Annex F Graphical Representation of Air Quality Monitoring Results
Annex G Graphical Representation of Noise Quality Monitoring Results
Annex H Graphical Representation of Water Quality Monitoring Results
Annex I Quarterly Assessment of Construction Impacts on Suspended Solids
List of Tables
Table 2.1 - Summary of
Impact EM&A Requirements............................................ 3
Table
4.1 - Summary of Complaints Received...................................................... 10
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ACL |
Atkins China Limited |
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CEDD |
Civil Engineering and Development Department |
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CRIII |
Central Reclamation Phase III |
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EIA |
Environmental Impact Assessment |
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EM&A |
Environmental Monitoring and Audit |
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EPD |
Environmental Protection Department |
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ER |
Engineer’s Representatives |
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ET |
Environmental Team |
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IEC |
Independent Environmental Checker |
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LCSD |
Leisure and Cultural Services Department |
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LCSVO-JV |
Leighton-China State-Van Oord Joint Venture |
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TDD |
Territory Development Department |
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TSP |
Total Suspended Particulates |
Executive Summary
Atkins China Limited (ACL)
has been appointed by TDD (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)
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 services during the duration of the construction works.
This
is the eighth quarterly
EM&A Report 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 program during the reporting period from 1 May 2005 to 31 July 2005.
Environmental
Monitoring and Audit Progress
Air, Noise and water
quality monitoring was conducted during this quarter.
Weekly environmental site inspections were also conducted during the reporting
quarter.
Exceedances
of Action and Limit Levels
No
air quality exceedances were recorded during the reporting period.
Continuous
noise monitoring was carried out during the reporting period and noise exceedances
were recorded May (Total 13 days), June (Total 7) and July (Total 2) 2005. The exceedances were investigated and were
found not to be attributed to the project works but rather to Hong Kong
Electric’s Contractors who where laying a below ground cable directly in front
of City Hall.
Elevated
SS levels were recorded in May (Total 1 Day), June (Total 5) and July (Total
3). Elevated DO levels were recorded in
May (Total 5 Days), June (Total 9) and July (Total 6). For both parameters these exceedances were
not found to be attributable to project works but rather natural variation in
water quality across the site and beyond.
Precautionary
mitigation measures implemented during the quarter included the creation of
bund along vulnerable edges of the reclamation to reduce run-off; the provision
of catch pits to retain run-off and settlement tanks to settle out SS before
discharge.
Complaint
Log
In
May one noise and one dark smoke complain was received, both were resolved. In
June, a water quality complaint was received from the PLA and also from ArchSD
concerning the quality of their intake waters.
These complains are currently under further investigation and
discussion.
Notifications
of Summons and Prosecutions
There
were no notifications of summons or prosecutions received during this reporting
quarter.
Site Inspection and Audit
Weekly environmental site inspections were carried
out during this quarter. Any minor
deficiencies noted during the site inspections were rectified by the Contractor
upon receipt of notification. However,
two non-compliances were issued for site drainage during the quarter. The Contractor has implemented some
measures to control site drainage but the ER and ET require more detailed plans
of their proposed drainage controls in order to be satisfied of their adequacy
to handle heavy rainfalls experienced in Hong Kong.
The Territory Development Department (TDD) (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)
of the Hong Kong Special Administrative Region (HKSAR) is constructing the
Central Reclamation Phase III project (CRIII).
The Main Works Contract HK 12/02 for CRIII commenced on 28 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. The main construction works that were
identified in the EIA Report for the Project, requiring environmental
monitoring and audit, have commenced.
The Contractor's works programme for the quarter is provided in Annex
E.
Atkins
China Limited (ACL) has been commissioned by TDD (now called CEDD), the
employer, to undertake the environmental monitoring and audit work for the
project. ACL is also the Resident
Engineers for the project and LCSVO-JV is the main contractor. An Independent Environmental Checker (IEC)
has been employed to audit the EM&A programme. The contacts of key management are provided in Annex
A.
The
works undertaken in the project area requiring environmental monitoring and
audit as identified in the EIA Report (not including Chai Wan Basin) during the
quarter included:
·
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 and rock
filling works at IRAE;
·
Central Terminal
Building (CTB) superstructure and sub-structure works;
·
Seawall construction
at IRAE;
·
In-situ work to
caisson and pumping stations at IRAE;
·
Temporary seawall
construction at IRAE;
·
Temporary diversion
of Culvert J;
·
Deep compaction works
on IRAE;
·
Piling works for Man
Yiu Street Footbridge;
·
Excavation to bored
piling at Eastern Seawall;
·
Maintenance and
necessary repair works for seawater intake silt screens.
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 2-1.
|
Parameters |
Descriptions |
Locations |
Frequencies |
Duration |
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TSP |
24-Hour TSP |
2 Locations |
Once every 6 days |
During dust
generating construction works |
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1-Hour TSP |
2 Locations |
Three times in
every 6 days |
During dust generating
construction works |
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Noise |
Leq (30 mins), L10,
L90, |
1 Location |
Continuous
measurements |
Two weeks before
Construction and During Construction |
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Water Quality |
Dissolved Oxygen; Salinity; Temp; Suspended Solids; Turbidity. |
14 Locations |
3 times a week,
Mid-ebb/flood tides |
During Marine
Works and for 4 weeks after completion of Marine Works |
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Waste |
On-Site Waste
Audit |
Active Work Sites |
Periodically |
During
Construction |
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On-Site Waste
Inspection |
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Landscape and
Visual |
Audits to ensure
effective implementation of mitigation measures |
During Construction |
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General Site
Conditions |
Environmental Site
Inspection |
Works areas and
areas affected by works |
Periodically |
During
Construction |
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Environmental Quality
Performance Limits for dust, noise and water quality have been established as
part of the Baseline Monitoring Report and are provided in Annex B.
Event Action Plans for air,
noise and water quality have been developed as part of the Baseline Monitoring
Report and are provided in Annex C.
The Contractor has
implemented relevant mitigation measures listed in the EIA Report, EM&A
Manual and Further Environmental Permit.
Seawater intake silt screens have been installed prior to the start of
the dredging works and a silt curtain attached to a floating steel frame is
installed around the grab dredger when used.
Drawings showing the
project area and locations of the monitoring stations are provided in Annex
D.
Air quality monitoring
commenced on 21 April 2005 at Central Barrack.
Monitoring was not conducted at the
City Hall monitoring station because exterior renovation works were undertaken
by City Hall at the elevated walkway area.
Air quality monitoring at the City Hall monitoring station will commence
once the exterior renovation works are completed. The graphical plot of air quality monitoring results is
provided in Annex F.
The graphical plot of noise
monitoring results for this quarter is provided in Annex G.
The graphical plot of water
quality monitoring results for this quarter is provided in Annex H.
Solid and liquid waste
management was implemented according to the Waste Management Plan during the
reporting quarter.
As
the works undertaken during the reporting quarter were mainly related to
reclamation, buildings and infrastructure works, the landscape and visual
impacts are considered to be minimal.
There were no exceedances of air quality
attributable to the project works found during the reporting quarter.
Noise
exceedances were recorded on the 1, 4, 5, 7, 9, 11, 12, 13, 17, 18, 19, 20, 25
and 27 May 2005; 16, 17, 18, 20, 27, 29 and 30 June 2005; and the 8 and 21 July
2005. For May and June noise
exceedances were found to be due to Hong Kong electric’s Contractor
installation of underground power cables in front of City Hall. In July 2005, most of this work had been
completed with the exception of repair works to the road surface using electric
hammers.
Elevated levels of DO and
SS were found during the reporting period, particularly at the seawater intake
stations along the coast.
Elevated
SS levels were recorded on 9 of May 2005 at stations M4A and M5, both just
exceeding the Action Level (AL) of 10 and 12 mg/l respectively. There appears to have been some elevation of
suspended solids levels all along the seawall at stations M2, M3, M4A and M5 on
the 9 May but levels dropped off on subsequent sampling events.
DO levels recorded on the 4 (M1, M2 & M3), 9 (M3), 20 (M2, M3
&M4), 25 (M3), 30 (M4A) May 2005 during the ebb tide and levels recorded on
the 13 (M1. M2, M3), 20 (M2, M3, M4A, M5 & M6) and 30 (M3 & M6) May
2005 during the flood tide, at the intake stations, exceeded the AL for
DO.
Reduced DO levels were recorded on the 1 (M1, M2, M3, M4A, M6 & M11), 3 (M1, M3, M4A, M6 & M11), 6 (M1, M2, M3, M4A, M5, M6, M11 & M12), 8 (M1, M2, M3, M4A, M5 & M12), 10 (M1 to M12 inclusive), 13 (M1 to M12 inclusive), 15 (M1, M2, M3, M4A & M11), 22 (M6), 24 (M3), 27 (M3, M4A, M5 & M6) June 2005.
Exceedances
of the AL at M8 and M10 were observed for DO on the 4, 6, 11, 18, and 22 July
2005. For
stations close to the seawall exceedances of the AL at M2, M3, M4A, M6 and M12
on the 22 July 2005 and at M2 and M4A on the 25 July 2005 were observed. SS levels exceeded the AL at M3, M6 and M11
on the 22 July 2005, at M4A on the 25 July 2005 and 27 July 2005.
A statistical analysis (Annex
I) of the monitoring results generally found the quarterly mean is
significantly less than 1.3 times of the ambient mean recorded during the
baseline period. This indicates that
although Project related exceedances of SS AL/LL levels were recorded during
the reporting period, the Project construction works generally did not cause
any adverse impact on SS levels during the reporting period with respect to the
baseline condition.
None of the observed
exceedances were found to be directly attributed to site works, as most of the
major marine works have been completed, the remaining marine works undertaken
during the period such as placement of rock armour and bore piling for the
western seawall of FRAE did not result in significant disturbance to the seabed
or creating of excessive suspended solids.
For the most part there was minimal run-off of silty waters from the site,
however, during June, heavy rainfall was experienced and some run-off of silty
water was identified. However, the
quantities observed were not considered large enough to have a significant
effect on the intake stations water quality.
In the month of June and July, increasingly strong thermoclyne and
haloclyne was observed developing in the open water stations C1, C2, M7 to
M10. This is a result of the increased
summer solar radiation warming the surface waters and the increased influx of
fresh water into the area. Thermoclynes
and Haloclynes result in a breakdown of the normal mixing of the water column
and often result in DO depletion in lower waters. This phenomenon is a natural event in Hong Kong.
While none of the
exceedances were attributed to project works, the Contractor has, however, been
instructed to improve the effectiveness of site drainage works to prevent any
discharge of silty waters. The ER, ET
are working with the Contractor towards implementing a comprehensive drainage
management plan for the site to guard against discharges of silty water into
Victoria Harbour during rainy weather.
After the 23 of June and 7
of July 2005 Weekly Site inspections, a non compliance was issued to the
Contractor regarding the adequacy of their site drainage control measures. At various points across the site discharge
of silty waters were observed.
The Contractor has been
requested to put in place a Drainage Management Plan to control all discharges
from the site. To date the contractor
submitted their Drainage Management Plan on the 13 July 2005, however, this was
not considered adequate to fully address all drainage concerns and the ET sent
a list of comments to the Contractor, via the ER for their response. To date no response to the ET comments has
been received by the ER from the Contractor.
However, the Contractor has
gone some way to rectify drainage inadequacies by installing higher more secure
bunds around the waters edge, constructing catch pits to retain site drainage
and provided a separate catch pit for wheel washing facilities.
The Contractor has
implemented the following measures to reduce the risk of SS discharge into the
marine environment:
·
Provision of concrete bunds to replace previous earth and sand bag
bunds, this has so far prevented discharges of silty water around area CR3
south of IRAW;
·
Provided catch pits at locations around the site to collect and store
run-off, this has gone some way to retain site drainage and reduce the
discharge of silty waters;
·
Provided catch pits to collect spill over from wheel washing facilities,
reducing washout into the reclamation and enabling the settlement of silt
before discharge of the spill over waters;
·
Improved maintenance and upkeep of remaining sandbags, however, there
are still cases where poor maintenance of sand bags may result in the discharge
of silty waters into Victoria Harbour.
Contractor has been required to replace sandbags with concrete bunds when appropriate;
·
Decrease the speed of marine vessels entering IRAE to reduce the effect
of the propeller wash; and
·
Some areas of the site require further drainage control measures such as
in front of Pier 8 on IRAW, the Contractor is aware of this and making progress
to provide workable measures to prevent discharge of silty waters.
No
environmental enquiries were received during the reporting quarter.
In
May one noise and one dark smoke complain was received.
A
member of the public noticed that the tower crane on IRAW was in operation
during a public holiday and queried whether the Contractor was in possession of
a Construction Noise Permit (CNP) for their operation during a Public Holiday. It was confirmed that the Contractor was in
possession of CNP No. GW-RS0170-05, which permits operation of the said tower
cranes at the time of the complaint.
A
member of the public made a complaint concerning dark smoke being emitted from
a vessel being used onsite. An
investigation of the complaint determined that the dark smoke was emitted from
a Pelican Barge transferring sand material at IRAE. The Pelican Barge was prohibited from working in CRIII until no
excessive dark smoke is emitted from the engine.
In
June, a water quality complaint was received from the PLA and also from ArchSD
concerning the quality of their intake waters.
The
PLA via China Overseas Property Ltd, complained of the quality of their cooling
water intake at Station M4A. Damage to
the silt screen protecting the PLAs intake was identified. A replacement silt screen was attached in
mid June by the Contractor, in addition a further silt screen layer was added
to increase protection and a net installed over the top of the intake to
exclude rubbish. The case is currently
under further discussion with the PLA, CEDD, the ER, the ET and the Contractor.
ArchSD
advised CEDD at the end of June 2005 that the water quality from their intake located
at Intake Station M5 had been experiencing reduced water quality over the last
six months. An initial investigation
was carried out of the monitoring data for Intake Station M5 and no overall
decline in water quality was identified with the exception of six spikes in
suspended solids concentration in 2005.
An investigation identified four of the spikes were due to filling
activities at IRAE (now finished) and two to discharges from Culvert L. The ET will meet with ArchSD to discuss
their case and take samples of their intake water for analysis.
There
were no new complaints in July 2005.
The
following table summarises all the complaints attributable to project works
received (both written and verbal) and the liaison/consultation undertaken, and
the actions and follow-up procedures taken.
|
Month/ Date of
Complaint |
Media |
Complaint &
Action |
Liaison/ Consultation
Taken |
Follow-up Action |
|
May
2005 |
Noise |
Query
over Contractors noise permit to operate during public holiday, Contract held
appropriate permits. No action required. |
Contractor,
ET, IEC and ET. |
N/A |
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|
Dark
Smoke |
Complaint
to EPD from member of public, dark smoke emitted from pelican barge. Barge was excluded from working onsite
until problem solved. |
EPD,
Contractor, ER, IEC and ET |
To
date barge still excluded from site. |
|
June
2005 |
Water |
PLA made complaint concerning
quality of intake water at Station M4A.
Repaired silt screen. |
PLA,
CEDD, Contractor,, ER, IEC, ET |
Case is currently undergoing
further discussion with PLA. |
|
Water |
ArchDS made complaint concerning
quality of intake water at Station M5, initial investigation did not show
elevated Suspended Solid levels. |
ArchDS,
CEDD, Contractor,, ER, IEC, ET |
ER and ET will meet with
ArchDS to further understand problem and take water samples at their water
processing plant. |
There were no notifications of summons and
prosecutions for the reporting quarter.
Air quality measurements were within the AL for TSP indicating that the project
was not having an adverse impact on local air quality.
Noise
exceedances were recorded in May, June and July, these exceedances were
attributed to Hong Kong Electric’s Contractor installing underground power
cables in front of City Hall, which is directly in front of the noise
monitoring location.
The water quality within the project area was found to be generally good
during the reporting period. However,
elevated DO and SS levels were recorded on a number of occasions. Investigations indicated that the
exceedances were not due to project activities but more reflective of general
water quality conditions in the area during the warm and wet summer months.
During environmental site inspections conducted during the reporting
quarter, two non-compliances were noted for site drainage. The Contractor is in the process of
rectifying these non-compliances by taking concrete steps on site. However, the Contractor is as yet to submit
suitable construction drainage plans for the site.
No prosecutions were received during the reporting quarter.
In
May one noise and one dark smoke complaint was received, which were resolved.
In June, a water quality complaint was received from the PLA and also from
ArchSD concerning the quality of their intake waters. These complaints are currently being further investigated.