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Client |
Territory 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-171-00 |
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Date of Issue |
10 May 2004 |
File
Ref. L:\S-proj\CR3\CR3.NEW\ 3128\Reports\0171.doc |
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Report Title |
Central
Reclamation, Phase III Quarterly
EM&A Report No. 3 February
through April 2004 |
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Name |
Sign |
Date |
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Prepared
by : |
Albert Chan, ACL - Environmental
Consultant |
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10
May 2004 |
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Reviewed by: |
Susana
Bezy, ACL – ET Leader |
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10
May 2004 |
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Authorised by : |
Jon
Varndell, ACL – Project Mgr |
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10
May 2004 |
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Distribution |
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Copy No |
Issue to |
Attention |
Corr. Ref. |
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1 |
TDD |
Mr
H H Yeung |
3128/M45/200/OC5966/al |
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2,
3 |
EPD |
Mr
M W Ho |
3128/M45/200/OC5966/al |
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4 |
EPD
(LCO) |
Mr
Allan Hung |
3128/M45/200/OC5966/al |
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5 |
Leighton-China
State-Van Oord JV |
Mr
Malcolm Plummer |
3128/M45/200/OC5966/al |
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6 |
CRIII
Sites/PRE |
Mr
Douglas Miller |
3128/M45/200/OC5966/al |
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7 |
Independent
Checker (Environment) |
Mr
Bill Douglas |
3128/M45/200/OC5966/al |
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8 |
Environmental
Team Leader |
Ms
Susana Bezy |
3128/M45/200/OC5966/al |
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9 |
Office
Copy |
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4.4 Record
of Environmental Complaints and Summons & Prosecutions.............................. 2
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 Noise Quality Monitoring Results
Annex G Graphical Representation of Water Quality Monitoring Results
Annex H IEC's Environmental Site Inspections Reports
List of Tables
Table 2.1 - Summary of Impact EM&A Requirements....................................................... 2
Table 3.5 – Air Quality Action and Limit Levels
for the City Hall Monitoring Sta............. 6
Table 4.1 - Summary
of Complaints Received.................................................................. 7
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ACL |
Atkins China Limited |
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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 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 third quarterly EM&A - TDD Progress 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 February to 30 April 2004.
Environmental Monitoring and Audit Progress
Noise and water
quality monitoring was conducted during this quarter.
Weekly environmental site inspections were also conducted during the reporting
quarter. Joint site inspections were
also carried out on 11 February 2004 and 22 April 2004. The IEC's environmental site inspection
reports are included in Annex H.
Exceedances of Action and Limit Levels
The noise monitoring carried out during this quarter did not find any
exceedances that were attributable to the project works. Although the continuous monitoring data
indicated several instances where the Leq (30 minutes) exceeded 75 dB(A) during
the reporting quarter, investigations into these levels found that they were
due to local noise conditions at the City Hall monitoring location and were not
due to the project. Off-site
inspections carried out by the IEC previously noted that City Hall is affected
by various noise sources unrelated to the project. The IEC's observations noted that the main sources of noise near
City Hall were from helicopter and vehicle traffic and passer-by activities in
the area.
From the analysis of water quality monitoring results collected during
this quarter, no exceedances were found to be attributable to the project
marine works. Although suspended solids
(SS) levels beyond the water quality criteria were found, investigations into
these exceedances determined that they were likely due to natural variation in
ambient conditions and/or local influencing factors in proximity of the
affected monitoring stations, and they were not due to the project. The investigations considered the conditions
from baseline monitoring, which was conducted during February to April 2003,
and results from the control stations located outside the project's
influence. A review of the monitoring
results showed that control stations located outside the project's influence
had similar values as marine impact stations.
Seawater intake monitoring data showed variable results and exceedances
were found to be localised near existing stormwater outfalls. These findings were similar to the
conditions observed during baseline monitoring. Further, silty discharges from outfalls within the project area
have been documented on various occasions.
Complaint Log
There were no environmental complaints received during the reporting
period.
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.
The Contractor carried out a Jet Grout Column
Trial on 22 April 2004. A silt curtain
was used to enclose the drilling platform to prevent the dispersion of
suspended sediments. EPD was notified
of the works. A comprehensive monitoring programme of the trial works was also
undertaken. The monitoring results will
be provided in the subsequent monthly report.
It was observed during the trial that the
water inside the silt curtain was quite turbid. The water outside the curtain however was visually
unaffected. A mechanical failure of the
jet grouting equipment caused the early termination of the trial and the
Contractor has postponed the recommencement of the trial for May 2004.
The Territory Development Department (TDD) 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 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. The
main construction works that were identified in the EIA Report for the Project,
requiring environmental monitoring and audit, have commenced. Activities under this contract to date
include demolition of Pier No.7, dredging works at IRAW and IRAE, marine piling
works at IRAW and demolition of the General Post Office (GPO) Walkway.
The Contractor's works programme for the quarter is
provided in Annex E.
Atkins China Limited (ACL) has been commissioned by TDD, 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:
·
Demolition work at Pier No. 7;
·
Demolition of the General Post Office (GPO)
Walkway;
·
Dredging and rockfilling works at IRAW and IRAE;
·
Marine piling at IRAW;
·
Jet Grout Column Trial;
·
Desilting and remedial work at Culvert F; and
·
Maintenance and necessary repair work 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.
|
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 has
been installed around the grab dredger.
Drawings showing
the project area and locations of the monitoring stations are provided in Annex
D.
Once dust
generating construction works have commenced, results of air quality monitoring
will be presented with graphical plots to depict trends over a 4-month period
(including the last month of the previous quarter and the present quarter).
The graphical
plot of noise quality monitoring results for this quarter is provided in Annex
F.
The graphical plot of water quality monitoring results for this quarter is provided in Annex G. An analysis of the monitoring results did not find any construction impacts on suspended solids (SS) at the project site. Although elevated levels of SS were found, particularly at the seawater intake stations (M1 to M6 and M11 and M12), these were investigated and were found not to be due to project works. The elevated SS levels were generally localised and occurred at seawater intake stations located near outfalls. Silty discharges from outfalls that are unrelated to the project works have been observed and documented in the reporting period. These discharges have been reported to the Environmental Protection Department (EPD) and are currently being investigated.
Solid and liquid
waste management was implemented according to the Waste Management Plan during
the reporting quarter.
As the works undertaken during the reporting month were related to
demolition works and marine construction works, the landscape and visual
impacts are considered to be minimal.
There were no exceedances of air, noise and water quality due to the
project works found during the reporting quarter.
As there were no instances of non-compliance due to the project works in
this reporting quarter, no actions and follow-up procedures were required.
Three complaints regarding the dumping of rock fill were received during
April 2004. The first complaint,
addressed to EPD and received on 9 April 2004, reported that the rock fill
material came from an unapproved source.
However, an investigation conducted by the ER found that the allegation
was unfounded, as the rock fill source in question had been previously
approved. The other two complaints
received on 19 April 2004 were also investigated and was found that only
suitable rock fill materials were used.
The ER carries out inspections of the Contractor's supply of rock fill
to ensure the quality and correct grading of rock. Rejected materials are returned back to the originator. Additionally, silt curtains are placed around
the grab when depositing rock fill to avoid dispersion of suspended solids and
the water quality monitoring programme did not find any exceedances
attributable to the rock filling activities.
No environmental prosecution notices or summons were received during the
reporting quarter.
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.
|
Media |
Complaint
& Action |
Liaison/
Consultation Taken |
Follow-up
Action |
|
|
February 2004 |
N/A |
None |
N/A |
N/A |
|
March 2004 |
N/A |
None |
N/A |
N/A |
|
April 2004 |
- |
Dumping of rock fill - The
complaints were investigated and found that all rock fill material have been
previously approved. The ER also inspects the rock fill supply to ensure the quality
and correct grading of rock. The water quality monitoring programme did not
find any exceedances attributable to the rock filling activities. |
Liaison between Contractor, ER, ET, IEC & TDD |
ER provided information on
the inspections and acceptance of rock fill material. |
There were no notifications of summons and
prosecutions for the reporting quarter.
During the reporting quarter, no exceedances of
environmental performance criteria were found to be caused by the project
works. For water quality monitoring,
low DO levels and elevated SS concentrations recorded were investigated and are
attributed to either ambient conditions or adverse influencing factors
unrelated to project marine works. It
was found that discharges from outfalls located near seawater intake monitoring
stations are major influencing factors that adversely impact water quality
within the works site area.
The marine-based impact monitoring stations
established to monitor the overall impact of the reclamation activities on
water quality in Victoria were shown to have similar results as the control
stations which are located outside the influence of project works. As such, the water quality monitoring
results did not indicate that the marine works were adversely affecting water
quality outside the works boundary in Victoria Harbour.
During environmental site inspections conducted
during the reporting quarter, minor deficiencies were noted. However, the Contractor rectified all
deficiencies after receipt of notification.
Three complaints regarding the dumping of rock fill were received during
April 2004. The complaints were
investigated and it was found that all rock fill sources have been previously
approved and that only suitable rock fill materials are used. The ER carries out inspections of the
Contractor's supply of rock fill to ensure the quality and correct grading of
rock. Rejected materials are returned
back to the originator. Additionally,
silt curtains are placed around the grab when depositing rock fill to avoid
dispersion of suspended solids and the water quality monitoring programme did
not find any exceedances attributable to the rock filling activities.