Contract No: HK/2009/05 Wanchai
Development Phase II and Central Wanchai Bypass Sampling,
Field Measurement and Testing Work (Stage 1) Environmental Monitoring & Audit
Monthly Report
-
MAR 2010 -
|
CLIENT: |
|
Civil Engineering and Development Department |
Lam Geotechnics Limited 11/F Centre Point 181-185
Gloucester Road, Wanchai, H.K. Telephone:
(852) 2882-3939 Facsimile:
(852) 2882-3331 E-mail:
info@lamenviro.com Website:
http://www.lamenviro.com |
|
|
|
|
|
Approved by: |
|
Raymond
Dai Environmental
Team Leader |
|
DATE: |
|
15 Apr 2010 |
2.2 Scope of the Project and Site
Description
2.3 Division of the Project
Responsibility
2.4 Project Organization and Contact
Personnel
3. status of regulatory compliance
3.1 Status of Environmental Licensing
and Permitting under the Project
6.4 Review of the Reasons for and the
Implications of Non-compliance
6.5 Summary of action taken in the
event of and follow-up on non-compliance
7. Cumulative Construction Impact due to the Concurrent Projects
9. Complaints, Notification
of Summons and Prosecution
lIST OF
TABLES
Table I Summary of Environmental
Inspections Mar 2010
Table 2.1 Schedule 2
Designated Projects under this Project
Table 2.2 Details of
Individual Contracts under the Project
Table 2.3 Contact Details
of Key Personnel
Table 3.2 Cumulative
Summary of Valid Licences and Permits under Contract no. HY/2009/11
Table 3.3 Summary of submission
status under FEP-01/356/2009 Condition
Table 4.1 Noise
Monitoring Station
Table 4.2 Air Monitoring
Station
Table 4.3 Marine Water
Quality Stations for Water Quality Monitoring
Table 4.4 Marine Water
Quality Monitoring Frequency and Parameters
Table 5.1 Noise
Monitoring Stations for HY/2009/11
Table 5.2 Water
Monitoring Stations for HY/2009/11
Table 5.3 Details of
Waste Disposal for HY/2009/11
Table 8.1 Summary of
Environmental Inspections Mar 2010
Table 9.1 Cumulative
Statistics on Complaints
Table 9.2 Cumulative
Statistics on Successful Prosecutions
Table 10.1 Construction Activities and
Recommended Mitigation Measures in Coming Reporting Month
lIST OF FIGUREs
Figure 2.1 Project
Layout
Figure 2.2 Project Organization Chart
Figure
4.1 Locations
of Environmental Monitoring Stations
lIST OF APPENDIces
Appendix 3.1 Environmental
Mitigation Implementation Schedule
Appendix 4.1 Action and Limit Level
Appendix 4.2 Copies of Calibration Certificates
Appendix 5.1 Monitoring Schedule for Reporting Month and
Coming month
Appendix 5.2 Noise Monitoring Results and Graphical
Presentations
Appendix 5.3 Water Quality Monitoring Results and Graphical
Presentations
Appendix 6.1 Event Action Plans
Appendix 6.2 Summary
for Notification of Exceedance
Appendix 9.1 Complaint Log
Appendix 10.1 Construction Programme of Individual Contracts
Construction Activities for the Reported Period
-
Dredging works,
-
Special Hoarding erection and
- Erection of Refuse Collection Point (RCP)
Noise Monitoring
Air Quality Monitoring
Water Quality Monitoring
Complaints, Notifications of Summons and Successful Prosecutions
Site Inspections and Audit
Table I Summary
of Environmental Inspections Mar 2010
Date |
Observations |
Action taken by Contractor |
Outcome |
|
1 |
23-Mar-10 |
Regular clear the floating debris behind the
silt screen. |
Daily clearance of the floating debris |
Complete as observed on 30-Mar-10 |
Future
Key Issues
HY/2009/11-
North Point Reclaimation
- Dredging works,
- Seawall foundation;
- Casting Caisson Seawall;
- Absorptive panel installation; and
- Special Hoarding erection
HK/2009/01
- Wan Chai Development Phase II Central –Wanchai Bypass at HKCEC
- Marine and land SI for cross harbour mains,
reclamation, utilities tunnel and P1 pipe pile wall;
- Prefabrication of steel stating for MTR Tsuen
Wan Line trial pile;
- Erection of ER office at area WA1 &
WA2;
- Dewatering for existing pumping station P1 to
P5;
- Trial pit execavtion for cooling water mains;
-
Silt screen installation for existing intake
(no. 1 to 5, WSD7 & WSD19 which shown in EP-356/2009)
HK/2009/02
- Wan Chai Development II Central Wan Chai Bypass at WanChai East
- Site clearance;
- Hoarding & fencing erection;
- Excavation;
- Dismantle existing footing at WSD Salt Water
Pumping Station;
- Dismantle existing footbridge staircase at
Wan Shing Road; and
-
Road modification Works
- Silt screen installation for existing intake
1.1.1. Lam Geotechnics Limited (LGL) has
been appointed to work as the Environmental Team
(ET) for Contractor No. HK/2009/05
Wan Chai Development Phase II and Central –Wan Chai Bypass Sampling, Field
Measurement and Testing Work (Stage 1) to
implement the Environmental Monitoring and Audit (EM&A) programme as stipulated in the EM&A
Manual of the approved Environmental Impact Assessment (EIA) Report for Wan
Chai Development phase II and Central-Wan Chai Bypass (Register No.:
AEIAR-125/2008) and in the EM&A Manual of the approved EIA Report for
Central-Wan Chai Bypass and Island Eastern Corridor Link (Register No.
AEIAR-014/2001).
1.1.2. This report presents the
environmental monitoring and auditing work carried out in accordance to the Section 10.3 of EM&A
Manual and /span>Environmental Monitoring
and Audit Requirements /span> under Particular
Specification Section 27.
1.1.3. This
report documents the finding of EM&A works during the period 17th to 27th March 2010.
Section 1 Introduction details the
scope and structure of the report.
Section 2 Project Background summarizes
background and scope of the project, site description, project organization and
contact details of key personnel during the reporting period.
Section 3 Staus of Regulatory Compliance summarizes the
status of valid Environmental Permits / Licenses during the reporting period.
Section 4 Monitoring
Requirements summarizes all monitoring parameters, monitoring
methodology and equipment, monitoring locations, monitoring frequency, criteria
and respective event and action plan and monitoring programmes.
Section 5 Monitoring Results summarizes the
monitoring results obtained in the reporting period.
Section 6 Compliance Audit summarizes the auditing of monitoring results, all exceedances environmental
parameters.
Section 7 Cumulative Construction Impact due to the Concurrent Projects summarizes the relevant cumulative construction impact due to the
concurrent activities of the concurrent Projects.
Section 8 Site Inspection summarizes the findings of weekly site
inspections undertaken within the reporting period, with a review of any relevant follow-up actions within the reporting period.
Section 9 Complaints, Notification of summons and Prosecution summarizes the cumulative statistics on complaints, notification of summons and
prosecution
Section 10 Conclusion
2.1.1. “Wan Chai Development
phase II and Central-Wan Chai Bypass and “Central-Wan Chai Bypass and Island
Eastern Corridor Link (hereafter called “the Project are Designed Project
(DP) under the Environmental Impact Assessment Ordinance (Cap. 499) (EIAO). The Environmental Impact Assessment (EIA)
Reports for Central-Wan Chai Bypass and Island Eastern Corridor Link (Register
No. AEIAR-041/2001) and Wan Chai Development phase II and Central-Wan Chai
Bypass (Register No.: AEIAR-125/2008) have been approved on 31 August 2001 and
11 December 2008 respectively.
2.1.2. The key purpose of Wan
Chai Development Phase II (WDII) is to provide land at Wan Chai North and North
Point for construction of the Central-Wan Chai Bypass and Island Eastern
Corridor Link (CWB). Land formed under the project will be developed as a
world-class waterfront promenade joining that at the new Central waterfront for
public enjoyment.
2.1.3. There is a compelling and
present need for the CWB to provide relief to the very congested east-west
Connaught Road Central/Harcourt Road / Gloucester Road Corridor (the Corridor)
which is currently operating beyond its capacity. The CWB will provide relief
to the existing congestion along the Corridor and cater for the anticipated
growth of traffic on Hong Kong Island. Without the CWB and its access roads,
there will not be sufficient capacity to serve the heavy traffic demands at
both strategic and local levels.
2.2.1. The Project is located
mainly in Wan Chai North, Causeway Bay and North Point, and is demarcated by
Gloucester Road and Victoria Park Road to the south, Fenwick Pier Street to the
west and Tong Shui Road Interchange to the east, as shown in Figure 2.1.
2.2.2. The study area
encompasses existing developments along the Wan Chai, Causeway Bay and North
Point shorelines. Major land uses include the Hong Kong Convention &
Exhibition Centre (HKCEC) Extension, the Wan Chai Ferry Pier, the ex-Wan Chai
Public Cargo Working Area (ex-PCWA), the Royal Hong Kong Yacht Club (RHKYC),
the Police Officers' Club, the Causeway Bay Typhoon Shelter (CBTS) and
commercial and residential developments.
2.2.3.
The scope of the
Project comprises:
- Land formation for key transport
infrastructure and facilities, including the Trunk Road (i.e.
CWB) and the associated slip roads for connection to the Trunk Road and for through
traffic from Central to Wan Chai and Causeway Bay. The land formed for the above
transport infrastructure will provide opportunities for the development of an
attractive waterfront promenade for the enjoyment of the public
- Reprovisioning / protection of the existing
facilities and structures affected by the land formation works mentioned above
- Extension, modification, reprovisioning or
protection of existing storm water drainage outfalls, sewerage outfalls and
watermains affected by the revised land use and land formation works mentioned
above
- Upgrading of hinterland storm water drainage
system and sewerage system, which would be rendered insufficient by the land
formation works mentioned above
- Provision of the ground level roads,
flyovers, footbridges, necessary transport facilities and the associated
utility services
- Construction of the new waterfront promenade,
landscape works and the associated utility services
span style='font:7.0pt "Times New Roman"'>
The Trunk Road (i.e. CWB) within
the study area and the associated slip roads for connection to the Trunk Road.
2.2.4. The project also contains
various Schedule 2 DPs that, under the EIAO, require Environmental Permits
(EPs) to be granted by the DEP before they may be either constructed or
operated. Table 2.1 summarises the five individual DPs under this
Project. Figure 2.1 shows the locations of
these Schedule 2 DPs.
Table 2.1 Schedule 2 Designated Projects under this Project
Item |
Designated Project |
EIAO Reference |
Reason for inclusion |
DP1 |
Central-Wanchai Bypass (CWB) including its road tunnel and slip roads |
Schedule 2, Part I, A.1 and A.7 |
Trunk road and road tunnel more than 800 m in length |
DP2 |
Road P2 and other roads which are classified as primary/district
distributor roads |
Schedule 2, Part I, A.1 |
Primary / district distributor roads |
DP3 |
Reclamation works including associated dredging works |
Schedule 2, Part I, C.1 and C.12 |
Reclamation more than 5 ha in size and a dredging operation less than
100 m from a seawater intake point |
DP5 |
Wan Chai East Sewage Outfall |
Schedule 2, Part I, F.5 and F.6 |
Submarine sewage pipelines with a total diameter more than 1,200 mm
and include a submarine sewage outfall |
DP6 |
Dredging for the Cross-harbour Water Mains from Wan Chai to Tsim Sha
Tsui |
Schedule 2, Part I, C.12 |
A dredging operation less than 100 m from a seawater intake point |
2.3.1. Due to the multi-contract
nature of the Project, there are a number of contracts sub-dividing the whole
works area into different work areas to be commenced. Contractors of individual contracts will be required by the EP
holder to apply Further Environmental Permits (FEP) such that the impact
monitoring stations are sub-divided accordingly to facilitate the
implementation of EM&A programme and to streamline the EM&A reporting
for individual FEP holders correspondingly.
2.3.2. In the reporting month,
Contract no. HY/2009/11 - Central Wanchai Bypass, North Point Reclamation under
the Project has been commenced on 17 March 2010. Two Contracts under the
Project are anticipated to be commenced in mid-April 2010. The details of individual contracts are
summarized in Table2.2.
Table 2.2 Details of Individual Contracts under the Project
Contract No. |
Contract Title |
Associated DP(s) |
Construction Commencement |
HK/2009/01 |
Wan Chai Development Phase II Central –Wanchai Bypass at Hong Kong
Convention and Exhibition Centre |
DP3, DP6 |
End of April 2010 |
HK/2009/02 |
Wan Chai Development II Central Wan Chai Bypass at WanChai East |
DP3, DP5 |
End of April 2010 |
HY/2009/11 |
Wan Chai Development Phase II and Central - Wan Chai Bypass - North
Point Reclamation |
DP3 |
17 March 2010 |
2.4.1. Civil Engineering Office
of Civil Engineering and Development Department is the overall project
controller. For the construction phase of the Project, Project Engineer,
Contractor(s), Environmental Team and Independent Environmental Checker are
appointed to manage and control environmental issues.
2.4.2. The proposed project
organization and lines of communication with respect to environmental
protection works are shown in Figure 2.2. Key personnel and contact particulars are
summarized in Table 2.3:
Table 2.3 Contact
Details of Key Personnel
Party |
Role |
Name |
Post |
Contact No. |
Contact Fax |
AECOM |
Engineer |
Mr. David Kwan |
Chief Resident Engineer |
2607 7801 |
2687 2322 |
China Harbour- CRBC joint venture |
Contractor under Contract no. HY/2009/11 |
Mr. Cho Yu Fun |
Project Director |
3157 1086 |
3157 1085 |
Mr. Gregory Wong |
Project Manager |
3157 1086 |
|||
Mr. Daniel Cheung |
Site Agent |
3157 1086 |
|||
Mr. C. M. Wong |
Environmental Officer |
3157 1086 |
|||
ENVIRON Hong Kong Limited |
Independent
Environmental Checker (IEC) |
Mr. David Yeung |
Independent
Environmental Checker (IEC) |
3743 0788 |
3548 6988 |
Lam Geotechnics Limited |
Environmental Team (ET) |
Mr. Raymond Dai |
Environmental Team
Leader (ETL) |
2882 3939 |
2882 3331 |
2.4.3. For HY/2009/11, the
principal work activities in this reporting month included:
- Dredging works;
- Special Hoarding erection; and
- Erection of Refuse Collection Point (RCP)
2.4.4. In coming reporting
month, the principal work activities of individual contracts are anticipated as
follows:
HY/2009/11-
North Point Reclaimation
- Dredging works,
- Seawall foundation;
- Casting Caisson Seawall;
-
Absorptive panel installation; and
- Special Hoarding erection
HK/2009/01
- Wan Chai Development Phase II Central –Wanchai Bypass at HKCEC
- Marine and land SI for cross harbour mains,
reclamation, utilities tunnel and P1 pipe pile wall;
- Prefabrication of steel stating for MTR Tsuen
Wan Line trial pile;
- Erection of ER office at area WA1 &
WA2;
- Dewatering for existing pumping station P1 to
P5;
- Trial pit execavtion for cooling
water mains;
- Silt screen installation for existing intake
(no. 1 to 5, WSD7 & WSD19 which shown in EP-356/2009)
HK/2009/02
- Wan Chai Development II Central Wan Chai Bypass at WanChai East
- Site clearance;
- Hoarding & fencing erection;
- Excavation;
- Dismantle existing footing at WSD Salt Water
Pumping Station;
- Dismantle existing footbridge staircase at
Wan Shing Road; and
- Road modification Works
3.1.1.
A summary of the current status on licences and/or permits on
environmental protection pertinent to the Project is shown in Table
3.1.
Permits and/or Licences |
Reference No. |
Issued Date |
Expiry
Date |
Status |
Environmental
Permit |
EP-356/2009 |
30 Jul
2009 |
N/A |
Valid |
Environmental
Permit |
EP-364/2009 |
17 Aug
2009 |
N/A |
Valid |
Environmental
Permit |
EP-376/2009 |
13 Nov 2010 |
N/A |
Valid |
Further Environmental Permit |
FEP-01/356/2009 |
18 Feb
2010 |
N/A |
Valid |
Further Environmental Permit |
FEP-02/356/2009 |
24 Mar
2010 |
N/A |
Valid |
Further Environmental Permit |
FEP-03/356/2009 |
24 Mar
2010 |
N/A |
Valid |
Further
Environmental Permit |
24 Mar
2010 |
N/A |
Valid |
3.1.2.
Due to the multi-contract nature of the Project, the status of permits
and/or licences under the individual contract(s) are presented as below:
HY/2009/11 Central Wanchai
Bypass, North Point Reclamation
3.1.3.
A summary of the current status on licences and/or permits on
environmental protection pertinent to the Project is shown in Table
3.2 and
Table 3.3.
Table 3.2 Cumulative Summary of Valid Licences and
Permits under
Contract no. HY/2009/11
Permits and/or Licences |
Reference No. |
Issued Date |
Expiry Date |
Status |
Further Environmental Permit |
FEP-01/356/2009 |
18 Feb 2010 |
N/A |
Valid |
Notification of Works Under APCO |
314911 |
9 Mar. 2010 |
N/A |
Valid |
Construction Noise Permit (CNP)
for non-piling equipment |
GW-RS0119-10 |
17 Feb 2010 |
22 Aug 2010 |
Valid |
Dumping Permit (Type 1 Open
Sea Disposal) |
EP/MD/10-067 |
10 Mar 2010 |
9 Sep 2010 |
Valid |
Dumping Permit (Type 1 Open
Sea Disposal (Dedicate Sites) & Type 2 Confined Marine Disposal) |
EP/MD/10-066 |
10 Mar 2010 |
9 Apr 2010 |
Valid |
Table 3.3 Summary of submission status under FEP-01/356/2009
Condition
EP Condition |
Submission |
Date of Submission |
Condition 2.6 |
Management Organization of Main
Construction Companies |
18 Dec 2009 |
Condition 2.7 |
Submission of works schedule and location plan |
8 Feb 2010 |
Condition
2.8 |
Silt
Curtain Deployment Plan |
25 Feb 2010 |
Condition
2.9 |
Silt
Screen Deployment Plan |
25 Feb 2010 |
Condition
2.10 |
Coral
Translocation Plan |
20 Nov 2009 |
Condition
2.16 |
Noise
Management Plan |
1 Mar 2010 |
3.1.4.
Implementation status of the recommended mitigation measures during this
reporting period is presented in Appendix 3.1.
Noise Monitoring Stations
4.1.1.
The noise monitoring stations for the Project are listed and shown in Table
4.1 and Figure
4.1. /span>Appendix 4.1
shows the established
Action/Limit Levels for the monitoring works.
Table 4.1 Noise Monitoring Station
Station |
Description |
M1a |
Harbour
Road Sports Centre |
M2b |
Noon Gun Area |
M3a |
Tung Lo Wan Fire Station |
M4a |
Causeway
Bay Community Centre |
M5b |
City
Garden |
M6 |
HK Baptist Church Henrietta
Secondary School |
M7a |
Harbour
Building |
Noise Monitoring Parameters, Frequency
and Duration
4.1.2.
The construction noise level shall
be measured in terms of the A-weighted equivalent continuous sound
pressure level (Leq). Leq (30 minutes) shall be used as
the monitoring parameter for the time period between 0700
and 1900 hours on normal weekdays. For all other time periods, Leq (5
minutes) shall be employed for comparison with the Noise Control
Ordinance (NCO) criteria. Supplementary information for
data auditing, statistical results such as L10 and L90 shall also be obtained
for reference.
4.1.3.
Noise monitoring shall be carried out at all
the designated monitoring stations. The monitoring frequency shall depend on
the scale of the construction activities. The following is an initial guide on
the regular monitoring frequency for each station on a weekly basis when noise
generating activities are underway:
-
one set of measurements between 0700 and 1900
hours on normal weekdays.
4.1.4.
If construction works are extended to include
works during the hours of 1900 0700 as well as public holidays and Sundays,
additional weekly impact monitoring shall be carried out during respective
restricted hours periods. Applicable permits under NCO shall be obtained by the
Contractor.
Monitoring Equipment
4.1.5.
As referred to in the Technical Memorandum
(TM) issued under the NCO, sound level meters in compliance with the
International Electrotechnical Commission Publications 651: 1979 (Type 1) and
804: 1985 (Type 1) specifications shall be used for carrying out the noise
monitoring. Immediately prior to and following each noise measurement the
accuracy of the sound level meter shall be checked using an acoustic calibrator
generating a known sound pressure level at a known frequency. Measurements may
be accepted as valid only if the calibration level from before and after the
noise measurement agree to within 1.0 dB.
4.1.6.
Noise measurements shall not be made in fog,
rain, wind with a steady speed exceeding 5 m/s or wind with gusts exceeding 10
m/s. The wind speed shall be checked with a portable wind speed meter capable
of measuring the wind speed in m/s.
4.1.7.
The sound level meter shall be checked using
an acoustic calibrator generating a known sound pressure level at a known
frequency before deployment to the site and during each site visit.
Measurements may be accepted as valid only if the calibration level from before
and after the noise measurement agree to within 1.0 dB.
Air Quality Monitoring Stations
4.2.1.
The air monitoring stations for the Project
are listed and shown in Table 4.2 and Figure
4.1. Appendix 4.1
shows the established Action/Limit Levels for the monitoring works.
Table 4.2 Air
Monitoring Station
Station ID |
Monitoring Location |
Description |
CMA1b |
Oil Street Community Liaison Centre |
North
Point |
CMA2a |
Causeway Bay Community Centre |
Causeway
Bay |
CMA3a |
Future CWB site office at Wanchai
Waterfront Promenade |
Causeway
Bay |
CMA4a |
Society for the Prevention of
Cruelty to Animals |
Wan Chai |
CMA5a |
Children Playgrounds opposite to
Pedestrian Plaza |
Wan Chai |
CMA6a |
Future AECOM site office at Work
Area |
Wan Chai |
MA1b |
Harbour
Building |
Central |
Air Monitoring Parameters, Frequency and
Duration
4.2.2.
One-hour and 24-hour TSP levels should be
measured to indicate the impacts of construction dust on air quality. The
24-hour TSP levels shall be measured by following the standard high volume sampling
method as set out in the Title 40 of the Code of Federal Regulations, Chapter 1
(Part 50), Appendix B.
4.2.3.
All relevant data including temperature,
pressure, weather conditions, elapsed-time meter reading for the start and stop
of the sampler, identification and weight of the filter paper, and any other
local atmospheric factors affecting or affected by site conditions, etc., shall
be recorded down in detail.
4.2.4.
For regular impact monitoring, the sampling
frequency of at least once in every six-days, shall be strictly observed at all
the monitoring stations for 24-hour TSP monitoring. For 1-hour TSP monitoring,
the sampling frequency of at least three times in every six-days should be
undertaken when the highest dust impact occurs.
Sampling Procedure and Monitoring
Equipment
4.2.5. High volume samplers (HVSs) in compliance with the following specifications shall be used for carrying out the 1-hour and 24-hour TSP monitoring:
-
0.6 - 1.7 m3 per minute adjustable flow
range;
- equipped with a timing / control device with
+/- 5 minutes accuracy for 24 hours operation;
- installed with elapsed-time meter with +/- 2
minutes accuracy for 24 hours operation;
- capable of providing a minimum exposed area
of 406 cm2;
- flow control accuracy: +/- 2.5% deviation
over 24-hour sampling period;
- equipped with a shelter to protect the filter
and sampler;
- incorporated with an electronic mass flow
rate controller or other equivalent devices;
- equipped with a flow recorder for continuous
monitoring;
- provided with a peaked roof inlet;
- incorporated with a manometer;
- able to hold and seal the filter paper to the
sampler housing at horizontal position;
- easily changeable filter; and
-
capable of operating continuously for a
24-hour period.
4.2.6.
Initial calibration of dust monitoring
equipment shall be conducted upon installation and thereafter at bi-monthly
intervals. The transfer standard shall be traceable to the internationally
recognized primary standard and be calibrated annually. The concern parties
such as IEC shall properly document the calibration data for future reference.
All the data should be converted into standard temperature and pressure
condition.
Laboratory Measurement / Analysis
4.2.7.
A clean laboratory with constant temperature
and humidity control, and equipped with necessary measuring and conditioning
instruments to handle the dust samples collected, shall be available for sample
analysis, and equipment calibration and maintenance. The laboratory should be
HOKLAS accredited.
4.2.8.
Filter paper of size 8" x 10" shall
be labeled before sampling. It shall be a clean filter paper with no pinholes,
and shall be conditioned in a humidity-controlled chamber for over 24-hours and
be pre-weighed before use for the sampling.
4.2.9.
After sampling, the filter paper loaded with
dust shall be kept in a clean and tightly sealed plastic bag. The filter paper
shall then be returned to the laboratory for reconditioning in the humidity
controlled chamber followed by accurate weighing by an electronic balance with
readout down to 0.1 mg. The balance shall be regularly calibrated against a
traceable standard.
4.2.10. All
the collected samples shall be kept in a good condition for 6 months before
disposal.
4.3.1.
The EIA Report has identified that the key
water quality impact would be associated with the dredging works during the
construction phase. Marine water
quality monitoring for dissolved oxygen (DO), suspended solid (SS) and
turbidity is therefore recommended to be carried out at selected WSD flushing
water intakes. The impact monitoring
should be carried out during the proposed dredging works to ensure the
compliance with the water quality standards.
Water Quality Monitoring Stations
4.3.2.
It is proposed to monitor the water quality
at 9 WSD salt water intakes and 12 cooling water intakes along the seafront of
the Victoria Harbour. The proposed water quality monitoring stations of the
Project are shown in Table 4.3 and Figure
4.1. Appendix 4.1
shows the established Action/Limit Levels for the monitoring works.
Table 4.3 Marine Water Quality Stations for Water
Quality Monitoring
Station Ref. |
Location |
Easting |
Northing |
WSD Salt
Water Intake |
|||
WSD7 |
Kowloon South |
834150. |
818300.3 |
WSD9 |
Tai Wan |
838132.7 |
817798.6 |
WSD10 |
Cha Kwo Ling |
841528.7 |
817713.4 |
WSD15 |
Sai Wan Ho |
841194.4 |
816520.2 |
WSD17 |
Quarry Bay |
839863.5 |
817077.5 |
WSD19 |
Sheung Wan |
833415.0 |
816771.0 |
WSD20 |
Kennedy Town |
830750.6 |
816030.3 |
WSD21 |
Wan Chai |
836220.8 |
815940.1 |
RW1 |
Wan Chai (Reprovision) |
836188.8 |
815911.1 |
Cooling
Water Intake |
|||
C1 |
HKCEC Extension |
835885.6 |
816223.0 |
C2 |
Telecom House |
835647.9 |
815864.4 |
C3 |
HKCEC Phase I |
835836.2 |
815910.0 |
C4 |
Wan Chai Tower and Great Eagle
Centre |
835932.8 |
815888.2 |
C5 |
Sun Hung Kai Centre |
836250.1 |
815932.2 |
C6 |
World Trade Centre |
837009.6 |
815999.3 |
C7 |
Windsor House |
837193.7 |
816150.0 |
C8 |
City Garden |
837970.6 |
816957.3 |
C9 |
Provident Garden |
838355.0 |
817116.6 |
RC1 |
Proposed
HKAPA Extension |
835487.7 |
815987.7 |
RC5 |
Sun Hung
Kai Centre (Reprovision) |
836291.4 |
816029.7 |
RC7 |
Windsor House (Temporary Dilution) |
837245.2 |
816156.6 |
Water Quality Parameters
4.3.3.
Monitoring of dissolved oxygen (DO),
turbidity and suspended solids (SS) shall be carried out at WSD flushing water
intakes and cooling water intakes. DO and Turbidity are measured in-situ while
SS is determined in laboratory.
4.3.4.
In association with the water quality
parameters, other relevant data shall also be measured, such as monitoring
location/position, time, sampling depth, water temperature, pH, salinity,
dissolved oxygen (DO) saturation, weather conditions, sea conditions, tidal
stage, and any special phenomena and work underway at the construction site
etc.
Sampling Procedures and Monitoring
Equipment
4.3.5.
The interval between two sets of monitoring
should not be less than 36 hours except where there are exceedances of Action
and/or Limit Levels, in which case the monitoring frequency will be
increased. Table 4.4 shows the
proposed monitoring frequency and water quality parameters. Duplicate in-situ measurements and water
sampling should be carried out in each sampling event. For selection of tides for in-situ
measurement and water sampling, tidal range of individual flood and ebb tides
should be not less than 0.5m.
Table 4.4 Marine Water Quality Monitoring Frequency
and Parameters
Activities |
Monitoring Frequency1 |
Parameters2 |
During the 4-week baseline
monitoring period |
Three days per week, at mid-flood
and mid-ebb tides |
Turbidity, Suspended Solids (SS),
Dissolved Oxygen (DO), pH, Temperature, Salinity |
During marine
construction works |
Three days per week, at mid-flood
and mid-ebb tides |
Turbidity, Suspended Solids (SS),
Dissolved Oxygen (DO), pH, Temperature, Salinity |
After
completion of marine construction works |
Three days per week, at mid-flood
and mid-ebb tides |
Turbidity, Suspended Solids (SS),
Dissolved Oxygen (DO), pH, Temperature, Salinity |
Notes:
1.
For selection of tides for in-situ measurement and water sampling, tidal
range of individual flood and ebb tides should be not less than 0.5m.
2.
Turbidity should be measured in situ whereas SS should be
determined by laboratory.
Dissolved Oxygen and Temperature
Measuring Equipment
4.3.6.
The instrument should be a portable,
weatherproof dissolved oxygen measuring instrument complete with cable, sensor,
comprehensive operation manuals, and use a DC power source. It should be capable of measuring:
- a dissolved oxygen level in the range of 0-20
mg/l and 0-200% saturation
- a temperature of 0-45 degree Celsius
4.3.7.
It should have a membrane electrode with
automatic temperature compensation complete with a cable. Sufficient stocks of spare electrodes and
cables should be available for replacement where necessary. (e.g. YSI model 59
meter, YSI 5739 probe, YSI 5795A submersible stirrer with reel and cable or an
approved similar instrument).
4.3.8.
Should salinity compensation not be build-in
in the DO equipment, in-situ salinity shall be measured to calibrate the DO
equipment prior to each DO measurement.
Turbidity Measurement Instrument
4.3.9.
The instrument should be a portable,
weatherproof turbidity-measuring instrument complete with comprehensive
operation manual. The equipment should
use a DC power source. It should have a
photoelectric sensor capable of measuring turbidity between 0‑1000 NTU
and be complete with a cable (e.g. Hach model 2100P or an approved similar
instrument).
Sampler
4.3.10. A
water sampler comprises a transparent PVC cylinder, with a capacity of not less
than 2 litres, and can be effectively sealed with latex cups at both ends. The sampler should have a positive latching
system to keep it open and prevent premature closure until released by a
messenger when the sampler is at the selected water depth (e.g. Kahlsico Water
Sampler or an approved similar instrument).
Sample Container and Storage
4.3.11. Water
samples for suspended solids measurement should be collected in high-density
polythene bottles, packed in ice (cooled to 4°C without being frozen), and
delivered to ALS Technichem (HK) Pty Ltd. as soon as possible after collection
for analysis.
Water Depth Detector
4.3.12. A
portable, battery-operated echo sounder shall be used for the determination of
water depth at each designated monitoring station. This unit can either be handheld or affixed to the bottom of the
workboat, if the same vessel is to be used throughout the monitoring programme.
Salinity
4.3.13. A
portable salinometer capable of measuring salinity in the range of 0-40 ppt
shall be provided for measuring salinity of the water at each of monitoring
location.
Monitoring Position Equipment
4.3.14. A
hand-held or boat-fixed type digital Global Positioning System (GPS) with way
point bearing indication or other equivalent instrument of similar accuracy
shall be provided and used during monitoring to ensure the monitoring vessel is
at the correct location before taking measurements.
Calibration of In-situ Instruments
4.3.15. All
in-situ monitoring instrument shall be checked, calibrated and certified by a
laboratory accredited under HOKLAS or equivalent before use, and subsequently
re-calibrated at 3 monthly intervals throughout all stages of the water quality
monitoring. Responses of sensors and electrodes should be checked with
certified standard solutions before each use.
Wet bulb calibration for a DO meter shall be carried out before
measurement at each monitoring location.
4.3.16. For
the on site calibration of field equipment by the ET, the BS 127:1993,
"Guide to Field and on-site test methods for the analysis of waters"
should be observed.
4.3.17. Sufficient
stocks of spare parts should be maintained for replacements when
necessary. Backup monitoring equipment
shall also be made available so that monitoring can proceed uninterrupted even
when some equipment is under maintenance, calibration, etc.
4.3.18. Current
calibration certificates of equipments are presented in Appendix 4.2.
Laboratory Measurement / Analysis
4.3.19. Analysis
of suspended solids has been carried out in a HOKLAS accredited laboratory, ALS
Technichem (HK) Pty Ltd. Water samples
of about 1L shall be collected at the monitoring stations for carrying out the
laboratory SS determination. The SS
determination work shall start within 24 hours after collection of the water
samples. The SS determination shall
follow APHA 19ed or equivalent methods subject to the approval of IEC and EPD.
5.0.1.
The environmental monitoring will be
implemented based on the division of works areas of each designed project
managed under different contracts with separate FEP applied by individual
contractors. Overall layout showing
work areas of various contracts, latest status of work commencement and
monitoring stations is shown in Figure 2.1 and Figure 4.1.
The monitoring results are presented in according to the Individual Contract(s).
5.0.2.
In the reporting month, the current contract
has Wan Chai Development Phase II and Central - Wan Chai Bypass - North Point
Reclamation under Permanent and temporary reclamation works including
associated dredging works in Wan Chai Development Phase II (WDII) area
(referred to as DP3 in the EIA Report) in the reporting month.
5.0.3.
The environment monitoring schedules for
reporting month and coming month are presented in Appendix 5.1.
HY/2009/11
Central Wanchai Bypass, North Point Reclamation
5.1.1.
The proposed division of noise monitoring
stations for HY/2009/11 are summarized in Table 5.1 below:
Table 5.1 Noise Monitoring Stations for HY/2009/11
Station |
Description |
M4a |
Causeway Bay Community Centre |
M5b |
City Garden |
5.1.2.
One day time and evening period noise
monitoring was conducted at the City Garden and Causeway Bay Community Centre
on 23 March 2010.
5.1.3.
Noise monitoring results measured in this reporting
period are reviewed and summarized.
Details of noise monitoring results and graphical presentation can be
referred in Appendix
5.2.
5.1.4.
Two action level exceedances were recorded due
to the noise complaints on 21 March 2010. The details of complaints can be
referred to Section 9. No limit level exceedance was recorded in the reporting
month.
5.2.1.
The major construction activities of Contract
no. HY/2009/11 was dredging works in the reporting month. No major dust impact
is anticipated to be caused by the dredging works. Therefore, no air monitoring
was conducted in the reporting month.
HY/2009/11
Central Wanchai Bypass, North Point Reclamation
5.3.1.
The proposed division of water monitoring
stations for HY/2009/11 are summarized in Table 5.2 below:
Table 5.2 Water Monitoring Stations for HY/2009/11
Station Ref. |
Location |
Easting |
Northing |
WSD Salt Water Intake |
|||
WSD9 |
Tai Wan |
838132.7 |
817798.6 |
WSD10 |
Cha Kwo Ling |
841528.7 |
817713.4 |
WSD15 |
Sai Wan Ho |
841194.4 |
816520.2 |
WSD17 |
Quarry Bay |
839863.5 |
817077.5 |
Cooling Water Intake |
|||
C8 |
City Garden |
837970.6 |
816957.3 |
C9 |
Provident Garden |
838355.0 |
817116.6 |
5.3.2.
Four water monitoring were conducted at the
proposed water monitoring stations on 19, 22, 24 and 26 March 2010.
5.3.3.
Water monitoring results measured in this
reporting period are reviewed and summarized.
Details of water quality monitoring results and graphical presentation
can be referred in Appendix 5.3.
5.3.4.
Action level exceedance was recorded at C8 on
19 March 2010, C9 and WSD 17 on 22 March 2010 respectively. The details of the
summary of exceedance can be referred to Section 6.
HY/2009/11
Central Wanchai Bypass, North Point Reclamation
5.4.1.
No inert C&D material was disposed nor
non-inert C&D material were disposed of.
Details of the waste flow table are summarized in Table 5.3.
Table 5.3 Details
of Waste Disposal for HY/2009/11
Waste
Type |
Quantity this month, m3 |
Cumulative-to-Date, m3 |
Disposal / Dumping Grounds |
Inert C&D materials disposed |
NIL |
NIL |
N/A |
Inert C&D materials recycled |
NIL |
NIL |
N/A |
Non-inert C&D materials disposed |
NIL |
NIL |
N/A |
Non-inert C&D materials recycled |
NIL |
NIL |
N/A |
Chemical waste disposed |
N/A |
N/A |
N/A |
Marine Sediment (Type 1 Open Sea Disposal) |
NIL |
NIL |
N/A |
Marine Sediment (Type 1 Open Sea Disposal
(Dedicate Sites) & Type 2 Confined Marine Disposal) |
22,000 |
22,000 |
East Sha Chau |
5.4.2.
There was only Type 1 Open Sea Disposal
(Dedicate Sites) & Type 2 Confined Marine Disposal marine sediment
disposed in the reporting month. The maximum dredging rate in North Point
Shoreline Zone is 3,000m3 per day in the reporting month, which is complied
with the criteria listed in Table 5.10 of EIA Report Register No. AEIAR-125/2008.
6.0.1.
The Event Action Plan for construction noise,
air quality and water quality are presented in Appendix 6.1.
6.1.1.
Two action level exceedances were recorded due
to the noise complaints on 21 March 2010. No limit level exceedance was
recorded during day time and evening time noise measurement on 23 March 2010. An
additional noise monitoring is schedule to be conducted on 5 April 2010 for the
noise monitoring during public holiday.
6.2.1.
No air monitoring was conducted in this
reporting period.
6.3.1.
Action level exceedances of suspended solid
were recorded at C8 on 19 March 2010 and C9 on 22 March 2010 mid-flood. Besides,
on 22 March 2010, action level exceedance of suspended solid at WSD17 was
recorded during mid-ebb tide. No muddy boom was observed during the monitoring
and no exceedance was recorded in the next mid-tide monitoring. Moreover, the
value is within the tolerance of the baseline water quality range. As such, it
is concluded as invalid exceedance. Summary for notification of exceedance can
be referred to Appendix 6.2.
6.4.1.
There was no non-compliance from the site
audits in the reporting period. The observations and recommendations made in
each individual site audit session were presented in Section 8.
6.4.2.
No project-related non-compliance from
monitoring was recorded in the reporting month.
6.5.1.
There was no particular action taken since no project-related
non-compliance was recorded from the site audits and environmental monitoring
in the reporting period.
7.0.1.
According to Condition 3.4 of the
EP-356/2009, this section addresses the relevant cumulative construction impact
due to the concurrent activities of the current projects including the Central Reclamation,
Central-Wan Chai Baypass and Island Eastern Corridor Link projects.
7.0.2.
From the Monthly EM&A report (February
2010) of Central Reclamation Project, the key works in the March are as
follows:
- Type A filling in FRAW and
FRAE above +2.5mPD
- Surcharging in FRAW and
FRAE
-
Construction of cantilever
slab at caisson
- Pile cap construction at
Culvert F
- Sheet piling, excavation,
structural works and backfilling for Culvert F
- General filling works
above +2.5 mPD in IRAE
- Construction of storm and foul drainage and gullies in hinterlands for Road P2, Road D7, Road D8 and Road D9 and adjacent to the GPO
- Roadworks along Lung Wui
Road, Tim Wa Avenue (Road D8) and Road P2
- Backfilling to Culvert K
extension
- Precasting for seawall
blocks and retaining wall (offsite)
- Installation of cooling
water mains for Tamar Development Project at IRAE
- Installation of cooling
mains discharge pipes in FRAE
- Diaphragm walling and
barrettes for CWB Works
- Excavation to formation
level at CWB works.
7.0.3.
According to the construction programme of Central-Wan
Chai Baypass and Island Eastern Corridor Link projects, the major construction activity
under Wan Chai Development Phase II was the dredging work at North Point Reclamation
Stage 1 in the reporting month. The major environmental impact was water
quality impact at North Point. /span>No
construction activities were undertaken in the Central-Wan Chai Baypass and
Island Eastern Corridor Link projects.
7.0.4.
The major environmental impacts generated from
the Central Reclamation Projects were located along the coastline of Central
and Admiralty while only dredging work at North Point Reclamation Stage 1 was
in operation in this reporting month. Beside,
water quality mitigation measures were properly in place for the dredging works
under HY/2009/11 in this reporting month. No project –related exceedance were
recorded. Thus, it is evaluated that the cumulative construction impact from
the concurrent projects including Wan Chai Development Phase II and Central Reclamation
was insignificant.
8.0.1.
Weekly inspection was undertaken by the
ET. One inspection was carried out on
23 March 2010 during this reporting period.
The results of these inspections and outcomes are summarized in Table
8.1.
Table 8.1 Summary of
Environmental Inspections Mar 2010
Item |
Date |
Observations |
Action
taken by Contractor |
Outcome |
1 |
23-Mar-10 |
Regular clear the floating debris behind the silt
screen. |
Daily clearance of the floating debris |
Complete as observed on 30-Mar-10 |
9.0.1.
In this reporting period, no inspection
notice, notification of summons or prosecution was received. Two complaints on 21 March 2010 was
regarding the loud noise and dark smoke emitted from dredging activities on
Sunday. A valid Construction Noise Permit no. GW-RS0119-10
was obtained for the dredging works at area for North Point Reclamation during
general holidays including Sunday between 0700-2300 hours and any day not being
a general holiday between 1900-2300hours. No exceedance was recorded during the day
time and evening time noise monitoring on 23 March 2010. An additional noise
monitoring is schedule to be conducted on 5 April 2010 for the noise monitoring
during public holiday. The details of cumulative complaint log and summary of
complaints are presented in Appendix
9.1.
9.0.2.
Cumulative statistic on complaints and
successful prosecutions are summarized in Table 9.1 and Table 9.2 respectively.
Table 9.1 Cumulative
Statistics on Complaints
Reporting Period |
No. of Complaints |
17th to 27th March
2010 |
2 |
Project-to-Date |
2 |
Table 9.2 Cumulative
Statistics on Successful Prosecutions
Environmental Parameters |
Cumulative No. Brought Forward |
No. of Successful Prosecutions this month (Offence Date) |
Cumulative No. Project-to-Date |
Air |
- |
0 |
0 |
Noise |
- |
0 |
0 |
Water |
- |
0 |
0 |
Waste |
- |
0 |
0 |
Total |
- |
0 |
0 |
10.0.1. The
EM&A programme was carried out in accordance with the EM&A Manual
requirements, minor alterations to the programme proposed were made in response
to changing circumstances.
10.0.2. The
scheduled construction activities and the recommended mitigation measures for
the coming month are listed in Table 10.1.
Table 10.1 Construction
Activities and Recommended Mitigation Measures in Coming Reporting Month
Location |
Key Construction Works |
Recommended
Mitigation Measures |
General |
Absorptive panel installation |
To avoid concurrent noisy operation To avoid accumulation of refuse |
Special Hoarding erection |
||
Marine
work |
Dredging works |
Daily visual inspection of silt screen and silt curtain to ensure its
operation properly
Daily clearance of floating debris behind the silt screen |
|
Seawall foundation |
|
|
Casting Caisson Seawall |
10.0.3. In
the coming month, the key contracts related to EP-356/2009 are anticipated to
be commenced on site are summarized in Table 10.2. The construction
programmes of individual contracts are provided in Appendix 10.1.
Table 10.2 Summary of Key Construction Activities of Individual Contract(s)
to be commenced in Coming Reporting Month
Contract
No. |
Key
Construction Activities |
Recommended
Mitigation Measures |
HK/2009/01 |
Marine and land SI for cross harbour mains, reclamation, utilities
tunnel and P1 pipe pile wall; Prefabrication of steel stating for MTR Tsuen Wan Line trial pile;
Erection of ER office at area WA1 & WA2;
Dewatering for existing pumping station P1 to P5;
Trial pit excavation for cooling water mains;
Silt screen installation for existing intake (no. 1 to 5, WSD7 &
WSD19 which shown in EP-356/2009) |
To conform the installation and setting as in the silt screen
deployment plan
Frequency spray water on the dry dusty road and on the surface of
concrete breaking |
HK/2009/02 |
Site clearance;
Hoarding & fencing erection;
Excavation;
Dismantle existing footing at WSD Salt Water Pumping Station;
Dismantle existing footbridge staircase at Wan Shing Road; and
Road modification Works
Silt screen installation for existing intake |
To cover the dusty material or stockpile by impervious sheet; Frequency spray water on the dry dusty road and on the surface of
concrete breaking To well maintain the mechanical equipments / machineries to avoid
abnormal noise nuisance
To conform the installation and setting as in the silt screen
deployment plan |