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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-191-00 |
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Date of Issue |
15 November 2004 |
File
Ref. L:\S-proj\CR3\CR3.NEW\ 3128\Reports\0191.doc |
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Report Title |
Central
Reclamation, Phase III Quarterly
EM&A Report No. 5 August
through October 2004 |
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Name |
Sign |
Date |
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Prepared
by : |
Albert
Chan, ACL - Environmental Consultant |
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15
Nov 2004 |
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Reviewed by: |
Susana
Bezy, ACL – ET Leader |
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15
Nov 2004 |
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Authorised by : |
Jon
Varndell, ACL – Project Mgr |
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15
Nov 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/OC6611/al |
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2,
3 |
EPD |
Mr
M W Ho |
3128/M45/200/OC6611/al |
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4 |
EPD
(LCO) |
Mr
Allan Hung |
3128/M45/200/OC6611/al |
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5 |
Leighton-China
State-Van Oord JV |
Mr
Malcolm Plummer |
3128/M45/200/OC6611/al |
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6 |
CRIII
Sites/PRE |
Mr
Douglas Miller |
3128/M45/200/OC6611/al |
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7 |
Independent
Checker (Environment) |
Mr
Bill Douglas |
3128/M45/200/OC6611/al |
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8 |
Environmental
Team Leader |
Ms
Susana Bezy |
3128/M45/200/OC6611/al |
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9 |
Office
Copy |
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1. Introduction
1.1 Basic Project Information
1.2 Project Organisation and Management
Structure
1.3 Works Undertaken
2.1 Summary of Impact
EM&A Requirements
2.2 Environmental Quality
Performance Limits
2.3 Event Action Plan
3.1 Implementation of
Environmental Measures
3.2 Environmental
Monitoring Locations
3.3 Air Quality Monitoring
Results
3.4 Noise Quality
Monitoring Results
3.5 Water Quality
Monitoring Results
3.6 Solid and Liquid Waste
Management Status
3.7 Landscape and Visual
Audit
4. Environmental
Enquiry, Complaint and Non-Compliance
4.1 Environmental Exceedances
4.2 Summary of Actions Taken for
Non-Compliance
4.3 Environmental Enquiries
4.4 Environmental
Complaints and Prosecutions
4.5 Record of Environmental Complaints
and Summons & Prosecutions
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
Annex I Quarterly Assessment of Construction Impacts on Suspended Solids
List of Tables
Table 2.1 - Summary of
Impact EM&A Requirements....................................................... 2
Table 4.1 - Summary of Complaints Received.................................................................. 7
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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 fifth 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 August to 31 October 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 with
the IEC were also carried out on 19 August, 23 September and 21 October
2004. The IEC's environmental site
inspection reports are included in Annex H.
Exceedances of Action and Limit Levels
Continuous noise monitoring was carried out during the reporting period
and noise quality exceedances were recorded on 10 August 2004 and on 1, 16, 21
and 23 October 2004. The exceedances
were investigated and it was found that the exceedances on 1, 21 and 23 October
were not due to the project works.
An investigation into the exceedance recorded on 10 August found that
the noise levels were attributed to the surface breaking works near City
Hall. The Event Action Plan for noise
quality was followed and all relevant parties were informed of the
exceedances. The Contractor immediately
stopped concurrent breaking works with more than one breaker as a mitigation
measure. Subsequent noise monitoring
found that no further exceedances were attributed to project works.
As for the exceedance recorded on 16 October, the noise levels were
likely attributed to the cooling watermains work in front of City Hall. One excavator-mounted breaker was used for
breaking concrete surfacing at the works area.
The Event Action Plan for noise quality was followed and all relevant
parties were informed of the exceedances.
The Contractor advised that the concrete breaking work is substantially
complete, and therefore, no significantly noisy construction activities near
City Hall are expected to continue. The
Contractor also advised that should breaking works need to be carried out again
near City Hall, they would use a handheld breaker instead of an excavator
mounted breaker and would install a portable noise barrier in front of the
works to mitigate noise. Subsequent
noise monitoring found no further exceedances attributed to project works.
Complaint Log
One complaint with regard to dust emissions from concrete breaking work
at the old heliport was received by EPD on 18 August 2004 and the ET was
notified on 20 August 2004. The
complaint was investigated and an ad-hoc dust measurement was taken at the site
boundary. The investigation found that
the measured dust level is well below the EM&A Action and Limit Levels and
no dust emissions were observed during the works. Further, the Contractor implemented additional mitigation
measures (increased watering of demolition area and installation of impervious
sheeting around breaker) after receipt of complaint.
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
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 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.
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:
·
Dredging, rockfilling and surcharge material works
at IRAW and IRAE;
·
Marine piling and obstruction clearing for marine
piles at IRAW;
·
Installation of caisson units at IRAW;
·
Placing of underlayer, armour rock and levelling
stone;
·
Superstructure work at Pier No. 7;
·
Substructure works for the Central Terminal
Building (CTB);
·
Demolition at the former heliport;
·
Cooling watermains work at Lung Wui Road; 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 as identified in the EIA have commenced, air
quality monitoring will be undertaken and the results of air quality monitoring
will be presented with graphical plots.
In the interim, an ad-hoc 1-hour TSP measurement was undertaken at the
site boundary of CR13 on 24 August 2004 to assess whether dust emissions from
the nearby demolition works at the old heliport are excessive. The measurement recorded an 1-hour TSP level
of 310 mg/m3, which is well below the
EM&A Action and Limit Levels.
Further, no visible dust emissions were observed at the works area and
it was noted appropriate air quality mitigation measures are being
implemented. Based on this information,
there is no indication to suggest that significantly dusty construction
activities with the potential to impact air quality are within range of the ASR
at this stage.
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. A statistical analysis (Annex
I) of the monitoring results generally 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 generally 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. Additional SS sampling were also undertaken at Culvert J and at
the Queensway Government Offices outfall during September and October. The results indicate that the discharges
from these locations contained high SS levels, and as such, may have
significantly influenced water quality in the surrounding area.
However, investigations into elevated SS levels
recorded at several seawater intake stations on 7 sampling days between August
and October 2004 found that the elevated levels may have been attributable to
project works. Appropriate actions were
undertaken in accordance with the Event and Action Plan and the Contractor has
implemented additional mitigation measures to further reduce SS impacts. The Contractor has installed floating frame
type silt curtains for all rock filling works and has installed an additional layer
of nonporous geotextile around the existing silt curtain used for dredging
works.
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 mainly related
to marine works, the landscape and visual impacts are considered to be minimal.
There were no exceedances of air and noise
quality attributable to the project works found during the reporting quarter.
The exceedances of the SS
Limit Level on 7 samplings days between August and October 2004 may have been
attributable to project marine works.
Appropriate actions were undertaken in accordance with the Event and
Action Plan for Water Quality and the Contractor has implemented additional
mitigation measures to further reduce SS impacts.
The Event and Action Plan for Water Quality
was undertaken immediately after investigations into the SS exceedances found
that the increase in SS levels may have been due to project marine works. Following the exceedances, the Contractor has installed floating frame type silt curtains for all
rock filling works and has installed an additional layer of nonporous
geotextile around the existing silt curtain used for dredging works. Further, increased visual inspections of the
seawater intake silt screens are being undertaken.
No environmental enquiries were received during the reporting quarter.
One complaint with regard to dust emissions from concrete breaking works
at the old heliport was received by EPD on 18 August 2004 and was forwarded to
the ET on 20 August 2004. The complaint
was immediately investigated after notification and an ad-hoc dust measurement
was taken at the site boundary to identify any dust impacts. The investigation found that the measured
dust level is well below the EM&A Action and Limit Levels and no visual
dust emissions were observed during the works.
Further, the Contractor implemented additional mitigation measures, such
as increased watering of demolition area and installation of impervious
sheeting around breaker, to further reduce potential dust impacts.
No environmental complaints or prosecutions were received during
September and October 2004.
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 |
|
August 2004 |
Noise |
1 dust complaint; investigated complaint |
Contractor, EPD, IEC, RE, ET, TDD (CEDD) |
Ad-hoc dust measurement at site area |
|
September 2004 |
N/A |
None |
N/A |
N/A |
|
October 2004 |
N/A |
None |
N/A |
N/A |
There were no notifications of summons and
prosecutions for the reporting quarter.
During the reporting quarter, exceedances of the
water quality criteria were generally attributed to ambient water quality. The water quality within the project area
was found to be generally good, but ambient SS levels in Victoria Harbour
showed an increase during mid to late September 2004. Low DO levels have also been recorded at seawater intake and
marine-based stations. However,
investigations into the DO levels found that they were not due to project works
as control stations recorded similar levels.
It should be noted that elevated SS levels recorded
at several seawater intake stations on 7 sampling days between August and
October 2004 may have been attributable to project works. Appropriate actions were undertaken in
accordance with the Event and Action Plan and the Contractor implemented
additional mitigation measures to further reduce SS impacts.
Although elevated SS levels were recorded at a few
seawater intake stations, the results from the marine-based impact monitoring
stations showed that offshore marine water quality was generally good. The marine-based 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.
One complaint regarding dust emissions was received during the quarter. The environmental complaint handling procedure as stipulated in the EM&A Manual and the Environmental Site Inspection Procedure Report was undertaken immediately following the complaints. The complaint was immediately investigated and an ad-hoc dust measurement was carried out. The investigation found that the measured dust level is well below the EM&A Action and Limit Levels and no visual dust emissions were observed during the works. Following the complaint, the Contractor implemented additional mitigation measures to further reduce potential dust impacts.