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Contract No: HK/2011/07 Wanchai
Development Phase II and Central Wanchai Bypass Sampling, Field Measurement and Testing Work (Stage 2) Environmental Permit
no. EP-122/2002/D Quarterly Environmental Monitoring
and Audit Report
- August 2015 to October
2015 -
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CLIENTS: |
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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 |
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CHECKED by: |
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Raymond Dai Environmental Team Leader |
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DATE: |
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24 November
2015 |
2.2 Scope of the Project and Site
Description
2.3 Project
Organization and Contact Personnel
2.4 Principal
Work and Activities
5.5. Review
of the Reasons for and the Implications of Non-compliance
5.6. Summary
of action taken in the event of and follow-up on non-compliance
6. Complaints, Notification of Summons
and Prosecution
7. Cumulative Construction Impact due to
the Concurrent Projects
lIST
OF TABLES
Table 1.1 Principal Work Activities in the reporting
period for Contractor no. HK/2012/08
Table
1.2 Principal Work
Activities in the reporting period for Contractor no. HY/2009/18
Table
2.1 Schedule 2 Designated
Projects under this Project
Table
2.2 Contact Details
of Key Personnel
Table
2.3 Principal Work
Activities in the reporting period for Contracor no. HK/2012/08
Table
2.4 Principal Work
Activities in the reporting period for Contracor no. HY/2009/18
Table
3.1 Continuous Noise
Monitoring Stations
Table
3.2 Air Monitoring
Stations
Table
3.3 Water Quality
Monitoring Stations
Table
3.4 Marine Water
Quality Monitoring Frequency and Parameters
Table
4.1 Continuous Noise
Monitoring Stations for Contract no. HK/2012/08 and HY/2009/18
Table
4.2 Air Monitoring
Station for Contract no. HK/2012/08
Table
4.3 Air Monitoring Station
for Contract no. HY/2009/18
Table
4.4 Water Quality
Monitoring Station for Contract no. HK/2012/08
Table 4.5 Summary of Water Quality Monitoring
Exceedance in the reporting period
Table
4.6 Details of Waste
Disposal for Contract no. HK/2012/08
Table
4.7 Details of Waste
Disposal for Contract no. HY/2009/18
Table 6.1 Cumulative
Statistics on Complaints
Table 6.2 Cumulative
Statistics on Successful Prosecutions
lIST OF FIGUREs
Figure
2.1 Project Layout
Figure
2.2 Project Organization Chart
Figure 3.1 Locations of Environmental Monitoring Stations
lIST OF APPENDIces
Appendix 2.1 Environmental Mitigation Implementation Schedule
Appendix 3.1 Action and Limit Level
Appendix 4.1 Noise Monitoring Graphical Presentations
Appendix 4.2 Air Quality Monitoring Graphical Presentations
Appendix 4.3 Water Quality Monitoring Graphical Presentations
Appendix 5.1 Event Action Plans
Appendix
6.1 Complaint Log
Appendix 8.1 Construction
Programme of Individual Contracts
Construction Activities for the
Reported Period
Contract no.
HK/2012/08 – Wan Chai Development Phase II – Central- Wan Chai Bypass at Wan
Chai West
Table 1.1
Principal Work Activities in the reporting period
for Contract no. HK/2012/08
|
August 2015 |
September 2015 |
October 2015 |
|
· Construction of ELS · Construction of pipe pile wall · Roadworks · Drainage Works |
· Construction of ELS · Construction of pipe pile wall · Roadworks · Drainage Works |
· Construction of ELS · Roadworks · Drainage works |
Contract no.
HY/2009/18 – Central- Wan Chai Bypass (CWB) – Central Interchange
Table
1.2 Principal Work Activities in the
reporting period for Contractor no. HY/2009/18
|
August 2015 |
September 2015 |
October 2015 |
|
· P1 Road Paving |
· P1 Road Planter Construction |
· P1 Road pedestrian road reinstatement |
Noise
Monitoring
Air Quality Monitoring
Water Quality Monitoring
A public complaint regarding water
quality referred by EPD was received by ET on 17 September 2015. The
complainant reported that Silt from Central and Wan Chai Reclamation was
spotted along the coastline (between LUNG WUI ROAD to LUNG WO ROAD, Central
& Wan Chai, Hong Kong).
Based on the site records confirmed by
RSS, removal of seawall blocks by derrick barge was undertaken by Contract
HK/2012/08 at Central Reclamation Phase III works area while mitigation
measures including provision of silt curtain implemented by the Contractor of HK/2012/08
during the seawall block removal works. According to relevant record, muddy dispersion
at HKCEC2W (area opposite to Lung King Street) was observed by the Environmental
Team on 14 September 2015 afternoon. The muddy patch was observed dispersing
outside the outer layer silt curtain deployed by the Contractor of HK/2012/08 towards
the Central Reclamation Phase III area while the outer layer silt curtain was
observed partially opened.
In view of the above observations, the
Contractor was advised to rectify any environmental deficiencies such that
adequate protection such as silt curtain shall be provided for exposed soil
slope to mitigate for potential runoff related water quality impact to the
surrounding waters; outer layer silt curtain deployed shall be entirely closed
during works to safeguard the surrounding water quality. Any opening for marine
vessel shall be closed promptly after passage and localized silt curtain
deployed on site shall be properly maintained to avoid any gap or opening to
effectively safeguard the nearby waters.
1.1.1.
Lam Geotechnics
Limited (LGL) has been appointed to work as the Environmental Team (ET) under
Environmental Permit no. EP-122/2002/D 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 Central Reclamation Phase III - Studies, Site Investigation, Design and
Construction (Register No.: AEIAR-040/2001) since 1 May 2013.
1.1.2.
This report documents the finding of EM&A works for
Environmental Permit (EP) no. EP-122/2002/D, during
the period from 1st August 2015 to 31st October 2015.
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 Monitoring
Requirements –
summarizes all monitoring parameters, monitoring locations, monitoring
frequency, duration and action
plan.
Section
4 Monitoring
Results – summarizes the monitoring results obtained
in the reporting period.
Section
5 Compliance
Audit – summarizes the auditing of monitoring
results, all exceedances environmental parameters.
Section
6 Complaints, Notification of summons and Prosecution
– summarizes the cumulative statistics on complaints,
notification of summons and prosecution
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 Conclusion
2.1.1 Central
Reclamation Phase III - Studies, Site Investigation, Design and Construction
(hereafter called “the Project”) are Designated Project (DP) under the
Environmental Impact Assessment Ordinance (Cap. 499) (EIAO). The Environmental
Impact Assessment (EIA) Reports for Central Reclamation Phase III - Studies,
Site Investigation, Design and Construction (Register No. AEIAR-040/2001) has
been approved on 31 August 2001.
2.2.1.
The design and construction of Central
Reclamation Phase III involves the permanent reclamation and construction and
operation of a trunk road and its road tunnel that is shown at Figure 2.1.
2.2.2.
The key purpose of the study area encompasses the area of Victoria Harbour to the southeast of
the new Outlying Islands Ferry Piers and north of Edinburgh Place and Lung Wui
Road. The area extends eastward to Fenwick Pier Street and the Fleet Arcade,
and includes the existing GPO, Star Ferry Piers, Queens Pier, City Hall, PLA
Headquarters, Hong Kong Red Cross Headquarters building and the Tamar Site. The scope of the Central Reclamation, Phase III includes:
·
Reclamation
and seawalls, roads and associated services, North Island Line Protection Works
and Advance Trunk Road Tunnel (ATRT) for the CWB;
·
Reprovisioning
of Star Ferry Pier, public landing steps, wallah wallah moorings, and motor
boat/launch operators' kiosks;
·
External
cooling water systems which consist of the cooling water pumping shells for
future developments, and the reprovisioning of existing cooling water pumping
stations and associated pipework systems and E&M works;
·
Reprovisioning
of existing Leisure and Cultural Services Department (LCSD)'s facilities;
·
Provision
of a flood relief path, stormwater culvert extensions, upgrading of hinterland
stormwater drainage resulting from the reclamation, demolition of the existing
waterfront structures and necessary landscaping;
·
The
Hong Kong Station Extended Overrun Tunnel (EOT) and associated ventilation
structures entrusted for construction within the CRIII works;
·
Reprovisioning
of the Government Heliport at the Wan Chai PCWA and reprovisioning of the Wan
Chai PCWA at Chai Wan Basin.
2.2.3.
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 four
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 |
|
DP1
|
Reclamation
works |
Schedule
2, Part I, A.7 |
|
DP2
|
Road
P2 and other roads which are classified as primary/district distributor roads
|
Schedule
2, Part I, A.1 |
|
DP3
|
Central-Wanchai
bypass (CWB) |
Schedule
2, Part I, C.1 |
|
DP4 |
The
North Island Line (NIL) Protection Works within CRIII |
Schedule
2, Part I, A.7 |
2.2.4.
The designated project work I (DP1) was
awarded to China State-Leader Joint Venture HK/2012/08 as part of the Project
works by the Civil Engineering and Development Department (CEDD). The construction work under Contract no. HK/2012/08 was commenced on 27
May 2013.
2.3.1 Civil Engineering and Development Department is the overall project controllers for the Central Reclamation Phase III Project. 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.
2.3.2
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 2.2:
Table 2.2 Contact Details of Key Personnel
|
Party |
Role |
Post |
Name |
Contact No. |
Contact Fax |
|
AECOM |
Engineer’s
Representative for WDII |
Principal
Resident Engineer |
Mr.
Frankie Fan |
2587
1778 |
2587 1877 |
|
Engineer’s
Representative for CWB |
Principal
Resident Engineer |
Mr.
Peter Poon |
3922
3388 |
3912 3010 |
|
|
China
State- Leader JV |
Contractor
under Contract no. HK/2012/08 |
Project Director |
C. N. LAI |
9106 5806 |
2877 1522 |
|
Project Manager |
Mr. Eddie Chung |
9189 8118 |
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|
Site Agent |
Mr. Keith Tse |
9095 7922 |
|||
|
Environmental Officer |
Mr.
James
Ma |
9130 9549 |
|||
|
Environmental Supervisor |
Mr. Y. L. Ho |
9856 5669 |
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|
Leighton Contractor (Asia) Limited |
Contractor under Contractor no. HY/2009/18 |
Site Agent |
Mr. Jimmy Chu |
3973 0803 |
2140 6799 |
|
Construction
Manager |
Mr. Andrew Lau |
3973 0923 |
|||
|
Environmental
Office |
Mr. Chris Chan |
3973 0885 |
|||
|
Environmental
Supervisor |
Ms. Christy So |
3973 1065 |
|||
|
RAMBOLL
ENVIRON Hong Kong
Limited |
Independent Environmental
Checker (IEC) |
Independent Environmental
Checker (IEC) |
Mr.
David Yeung |
3465
2888 |
3465
2899 |
|
Lam Geotechnics Limited (For Enquiry) |
Environmental Team (ET) |
Environmental Team Leader (ETL) |
Mr.
Raymond
Dai |
2882 3939 |
2882 3331 |
2.4.1 During this reporting period, the principle work
activities of the contracts are included as follows:
Contract no. HK/2012/08 – Wan Chai Development Phase II – Central- Wan Chai
Bypass at Wan Chai West
Table
2.3 Principal Work Activities in the reporting period for HK/2012/08
|
August 2015 |
September 2015 |
October 2015 |
|
· Construction of ELS · Construction of pipe pile wall · Roadworks · Drainage works |
· Construction of ELS · Construction of pipe pile wall · Roadworks · Drainage works |
· Construction of ELS · Roadworks · Drainage works |
Contract no. HY/2009/18 – Central – Wan Chai Bypass (CWB)
– Central Interchange
Table 2.4 Principal Work Activities in the reporting period for HY/2009/18
|
August 2015 |
September 2015 |
October 2015 |
|
· P1 Road Paving |
· P1 Road Planter Construction |
· P1 Road pedestrian road reinstatement |
2.4.2 Implementation status of the recommended mitigation
measures during this reporting period is presented in Appendix
2.1.
NOISE Monitoring Stations
3.1.1.
The continuous noise monitoring station for the Project is listed and
shown in Table 3.1 and Figure 3.1. Appendix 3.1 shows the established Action/Limit
Levels for the monitoring works.
Table 3.1 Continuous Noise
Monitoring Stations
|
District |
Station |
Description |
|
Central |
ACL3 |
City Hall |
Noise Monitoring
Parameters, Frequency and Duration
3.1.2. Continuous
24-hour noise monitoring shall be carried out at the
designated monitoring stations. The following is an initial guide on the
regular monitoring frequency for each station on a 24 hours daily basis when
noise generating activities are underway:
·
One
set of measurements between 0700 and 1900 hours on normal weekdays.
·
One
set of measurements between 1900 and 2300 hours on normal weekdays and 0700 and
2300 hours on public holidays.
·
One
set of measurements between 2300 and 0700 hours on next day on everyday.
3.1.3. 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
3.1.4. As
referred to in the Technical Memorandum ™ 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 agrees to within 1.0 dB.
3.1.5. 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.
3.1.6. 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 will be accepted as valid only if the
calibration level from before and after the noise measurement agrees to within
1.0 dB.
Air Quality Monitoring Stations
3.2.1.
The air quality monitoring stations for the
Project are listed and shown in Table 3.2 and Figure 3.1. Appendix 3.1 shows the
established Action/Limit Levels for the monitoring works.
Table 3.2 Air Quality Monitoring
Stations
|
Station ID |
Monitoring Location |
|
ACL1 |
City Hall |
|
ACL2a |
Contractor HK/2012/08 Site Office |
Air Quality Monitoring Parameters, Frequency and Duration
3.2.2.
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.
3.2.3.
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.
3.2.4.
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
3.2.5.
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.
3.2.6.
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
3.2.7.
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.
3.2.8.
Filter paper of size 8” x 10” shall be
labelled 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.
3.2.9.
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.
3.2.10.
All the collected samples shall be kept in a
good condition for 6 months before disposal.
WATER Quality Monitoring
Stations
3.3.1 The water
quality monitoring stations for the Project are listed and shown in Table
3.3 and Figure 3.1. Appendix 3.1 shows the
established Action/Limit Levels for the monitoring works.
Table
3.3 Water Quality Monitoring
Stations
|
Station ID |
Description |
Easting |
Northing |
|
Cooling Water Intakes |
|||
|
M5B |
Swire / Government
Headquarters/ Tamar Development/ MTRCL and HSBC Headquarters |
835169 |
816052 |
|
Culverts (Reference Station) |
|||
|
Culvert J |
Culvert J Outfall Location |
835082 |
816071 |
Water Quality Parameters
3.3.2 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.
3.3.3 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
3.3.4 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 3.4 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 3.4 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
3.3.5
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
3.3.6
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).
3.3.7
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
3.3.8
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 (e.g. Hach model
2100P or an approved similar instrument).
Sampler
3.3.9
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
3.3.10
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
3.3.11
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
3.3.12
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
3.3.13
A hand-held or boat-fixed type digital Global Positioning
System (GPS) with waypoint 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
3.3.14
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.
3.3.15
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.
3.3.16
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.
Laboratory Measurement /
Analysis
3.3.17
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.
4.0.1.
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 3.1. The monitoring results are
presented in according to the Individual Contract(s).
4.0.2. In the reporting period, the concurrent
contracts are:
Ÿ Contract
no. HK/2012/08 – Wan Chai Development Phase II – Central – Wan Chai Bypass at
Wan Chai West.
Ÿ Contractor no.
HY/2009/18 – Central – Wan Chai Bypass (CWB) – Central Interchange
4.1.1
Due to safety concerned, the location of the continuous noise monitoring
station at City Hall was finely adjusted to the roof of the City Hall, Low
Block on 1 May 2013.
Contract
no. HK/2012/08 – Wan Chai Development Phase II – Central – Wan Chai Bypass at Wan Chai West and Contractor no.
HY/2009/18 – Central – Wan Chai Bypass (CWB) – Central Interchange
4.1.2
The proposed division of noise monitoring station is summarized in Table
4.1 below.
Table
4.1 Continuous
Noise
Monitoring Station for Contract no. HK/2012/08 and Contract no.
HY/2009/18
|
Location ID |
District |
Description |
|
ACL3 |
Central |
City Hall |
Remarks:
Continuous noise monitoring results and graphical presentation for ACL3 during
restricted hours and night time period are for information only.
4.1.3
No action or limit level exceedance was recorded in the August,
September and October 2015 reporting period.
4.1.4
Continuous noise monitoring results measured in this reporting period
are reviewed and summarized. Details of continuous noise monitoring results and
graphical presentation can be referred to Appendix 4.1
4.2.1
1-hour and 24-hour Total Suspended Particulates (TSP) monitoring were
conducted at ACL1 – City Hall and ACL2 – PLA Barracks (ACL2a Contractor
HK/2012/08 Site Office since 7 December 2013) on every six days basis.
4.2.2
Due to the large scale renovation works at People’s Liberation Army
Headquarter, a Proposal for Relocation of Air Quality Monitoring Station at
People’s Liberation Army Headquarter (ACL2) was formally submitted to EPD on
4th November, 2013.
4.2.3
Air Quality Monitoring at ACL2 was temporarily suspended during the
period from 14th November, 2013 to 3rd December, 2013.
4.2.4
The Proposal for Relocation of Air Quality Monitoring Station at
People’s Liberation Army Headquarter (ACL2) was approved by EPD on 27 November
2013.
4.2.5
According to the approved proposal for relocation of Air Quality
Monitoring station, the action and limit levels of ACL2a shall adopt the
reference monitoring result from the baseline air monitoring report for
EP/364/2009 in 22 April 2010 in which approved by EPD.
4.2.6
The air quality monitoring at ACL2a – Contractor HK/2012/08 Site Office
was commenced on 7 December 2013.
Contract no. HK/2012/08
– Wan Chai Development Phase II – Central – Wan Chai Bypass at Wan Chai West
4.2.7 The
proposed division of air quality monitoring stations are summarized in Table
4.2 below.
Table 4.2
Air
Quality Monitoring Stations for Contract no. HK/2012/08
|
Station |
Description |
|
ACL1 |
City Hall |
|
ACL2a |
Contractor HK/2012/08 Site Office |
4.2.8
No action or limit level exceedance was recorded in the August,
September and October 2015 reporting period.
4.2.9
The air quality monitoring results measured
in this reporting period are reviewed and summarized. Details of air monitoring results and
graphical presentation can be referred in Appendix 4.2.
Contractor no.
HY/2009/18 – Central – Wan Chai Bypass (CWB) – Central Interchange
4.2.10 The
proposed division of air quality monitoring station is summarized in Table
4.3 below.
Table
4.3 Air
Quality Monitoring Station for Contract no. HY/2009/18
|
Station |
Description |
|
ACL1 |
City Hall |
4.2.11
No action or limit level exceedance was recorded in the August,
September and October 2015 reporting period.
4.2.12
The air quality monitoring results measured
in this reporting period are reviewed and summarized. Details of air monitoring results and
graphical presentation can be referred in Appendix 4.2.
4.3.1 The
proposed division of water quality monitoring stations are summarized in Table
4.4 below.
Table
4.4 Water
Quality Monitoring Station for Contract no. HK/2012/08
|
Station ID |
Description |
||
|
Cooling
Water Intakes |
|
||
|
M5B |
Swire / Government
Headquarters/ Tamar Development/ MTRCL and HSBC Headquarters |
||
|
Culverts (Reference Station) |
|
||
|
Culvert J |
Culvert J Outfall
Location |
||
4.3.2
Water quality monitoring results measured in
this reporting period are reviewed and summarized. Detail of water quality
monitoring results and graphical presentation can be referred in Table
4.5 and Appendix 4.3
4.3.3
Water quality monitoring at M5B and Culvert J
were conducted three days per week during reporting period starting form 26
September 2014.
4.3.4
One action level exceedance of dissolved oxygen was recorded on 31
August during flood tide in the August 2015 reporting period. After
the investigation, the exceedances were concluded as non-project related.
4.3.5
After checking with contractor, no marine
activity was conducted under Contract HK/2012/08 on 31 August 2015. Mitigation
measures including the use of silt curtain was in place and silt curtain
installed around intake monitoring station was generally in order while nearby culvert
discharge was consistently observed. In view of no marine activity was
conducted and no further exceedance was recorded in subsequent monitoring, it
was considered that the exceedance was not project related.
4.3.6
Three action level exceedances of suspended
solids were recorded on 11 September 2015 during ebb tide, 14 and 28 September
2015 during flood tide in the September 2015 reporting period.
4.3.7
After checking with contractor, despite
removal of seawall block by derrick barge under Contract HK/2012/08 was
conducted on 11 September 2015. Mitigation measures including the use of silt
curtain was in place and silt screen installed around intake monitoring station
was generally in order while nearby culvert discharge was observed. In view of
no further exceedance was recorded in the subsequent monitoring, it was
considered that the exceedance was not project related.
4.3.8
After checking with contractor, despite
removal of seawall block by derrick barge under Contract HK/2012/08 was
conducted on 14 September 2015. Mitigation measures including the use of silt
curtain was in place and silt screen installed around intake monitoring station
was generally in order during monitoring while nearby culvert discharge was
observed. Despite opening of the silt curtain was observed during ebb tide on
the same monitoring date, no exceedance was recorded and Contractor has taken
immediate action to rectify the silt curtain condition. In view of the above
and no further exceedance was recorded in the subsequent monitoring, it was
considered that the exceedance was not project related.
4.3.9
After checking with contractor, no marine
activity was conducted under Contract HK/2012/08 on 28 September 2015.
Mitigation measures including the use of silt curtain was in place and silt
screen installed around intake monitoring station was generally in order while
nearby culvert discharge was observed. In view of no marine activity was conducted
and no further exceedance was recorded in subsequent monitoring, it was
considered that the exceedance was not project related.
4.3.10
Two action level exceedances of dissolved
oxygen were recorded on 22 September 2015 during flood tide and 26 September 2015
during ebb tide in the September 2015 reporting period.
4.3.11
After checking with contractor, despite
removal of seawall block by derrick barge under Contract HK/2012/08 was
conducted on 22 September 2015. Mitigation measures including the use of silt
curtain was in place and silt screen installed around intake monitoring station
was generally in order while nearby culvert discharge was observed. In view of
no further exceedance was recorded in the subsequent monitoring, it was
considered that the exceedance was not project related.
4.3.12
After checking with contractor, despite
removal of stones by derrick barge under Contract HK/2012/08 was conducted on
26 September 2015. Mitigation measures including the use of silt curtain was in
place and silt screen installed around intake monitoring station was generally
in order while nearby culvert discharge was observed. In view of no further exceedance
was recorded in the subsequent monitoring, it was considered that the exceedance
was not project related.
4.3.13
Two action level exceedances of dissolved
oxygen were recorded on 6 October 2015 during flood tide and 12 October 2015
during ebb tide in the October 2015 reporting period.
4.3.14
After checking with contractor, despite
removal of seawall block was conducted under Contract HK/2012/08 on 6 October
2015, contractor mitigation measures such as the use of silt curtain was in
place and silt screen installed around the intake monitoring station was
generally in order while nearby culvert discharge was observed. In view of no
exceedance recorded on the subsequent monitoring, it was considered that the
exceedance was not project related.
4.3.15
After checking with contractor, despite
removal of seawall block was conducted under Contract HK/2012/08 on 12 October
2015, contractor mitigation measures such as the use of silt curtain was in
place and silt screen installed around the intake monitoring station was
generally in order while nearby culvert discharge was observed. In view of the
above and the location of construction area was located at downstream of M5B
during monitoring period, it was considered that the exceedance was not project
related.
4.3.16
Two action level exceedances of suspended
solids were recorded on 10 and 12 October 2015 during flood tide in the October
2015 reporting period.
4.3.17
After checking with contractor, despite
removal of seawall block was conducted under Contract HK/2012/08 on 10 October
2015, contractor mitigation measures such as the use of silt curtain was in
place and silt screen installed around the intake monitoring station was
generally in order while nearby culvert discharge was observed. In view of the
above, it was considered that the exceedance was not project related.
4.3.18
After checking with contractor, despite
removal of seawall block was conducted under Contract HK/2012/08 on 12 October
2015, contractor mitigation measures such as the use of localised silt curtain
was in place and silt screen installed around the intake monitoring station was
generally in order while nearby culvert discharge was observed. In view of the
above, it was considered that the exceedance was not project related.
Nevertheless, Contractor was reminded to properly maintain the outer layer silt
curtain
Table 4.5 Summary of Water
Quality Monitoring Exceedance in Reporting Period
|
Contract No. |
Water quality monitoring station |
Mid-flood |
Mid-ebb |
||||||
|
DO |
SS |
DO |
SS |
||||||
|
AL |
LL |
AL |
LL |
AL |
LL |
AL |
LL |
||
|
HK/2012/08 |
M5B2 |
3 |
0 |
4 |
0 |
2 |
0 |
1 |
0 |
|
Culvert J1 |
- |
- |
- |
- |
- |
- |
- |
- |
|
|
Total |
3 |
0 |
4 |
0 |
2 |
0 |
1 |
0 |
|
Remarks1: Action or limit level are not
applicable to reference station Culvert J.
Remarks2: Turbidity measurement are
reported as reference.
Contract no. HK/2012/08 – Wan Chai Development
Phase II – Central – Wan Chai Bypass at Wan Chai West
4.4.1
Inert and Non-inert C&D wastes were disposed in
this reporting period. Details of the waste flow table are summarized in Table
4.6
Table 4.6 Details of Waste Disposal
for Contract no. HK/2012/08
|
Waste Type |
Quantity this quarter |
Cumulative
Quantity-to-Date |
Disposal / Dumping Grounds |
|
Inert C&D materials disposed, m3 |
609
9261 |
1929 44086 |
TM38 TKO137 |
|
Inert C&D materials recycled, m3 |
NIL |
NIL |
NIL |
|
Non-inert C&D materials disposed, m3 |
90 |
955 |
SENT
Landfill |
|
Non-inert C&D materials recycled, m3 |
NIL |
NIL |
NIL |
|
Chemical waste disposed, kg |
NIL |
NIL |
NIL |
Contractor no. HY/2009/18 – Central – Wan
Chai Bypass (CWB) – Central Interchange
4.4.2
Inert and Non-inert C&D wastes were disposed in
this reporting period. Details of the waste flow table are summarized in Table
4.7
Table
4.7 Details of Waste Disposal for Contract no. HY/2009/18
|
Waste Type |
Quantity this quarter |
Cumulative Quantity-to-Date |
Disposal / Dumping Grounds |
|
Inert C&D materials disposed, m3 |
NIL |
NIL |
NIL |
|
Inert C&D materials recycled, m3 |
NIL |
NIL |
NIL |
|
Non-inert C&D materials disposed, m3 |
NIL |
NIL |
NIL |
|
Non-inert C&D materials recycled, m3 |
NIL |
NIL |
NIL |
|
Chemical waste disposed, kg |
NIL |
NIL |
NIL |
5.0.1. The Event Action Plan for construction
noise and air quality are presented in Appendix 5.1.
Contract no.
HK/2012/08 – Wan Chai Development Phase II – Central – Wan Chai Bypass at Wan
Chai West
5.1.1 No action or limit level exceedance was recorded in the August, September and October 2015
reporting period.
Contractor no. HY/2009/18 – Central – Wan
Chai Bypass (CWB) – Central Interchange
5.1.2
No action or limit level exceedance was recorded in the August,
September and October 2015 reporting period.
Contract no.
HK/2012/08 – Wan Chai Development Phase II – Central – Wan Chai Bypass at Wan
Chai West
5.2.1
No action or limit level exceedance was recorded at ACL1 – City Hall and
ACL2a Contractor HK/2012/08 Site Office in August, September and October 2015
reporting period.
Contractor no.
HY/2009/18 – Central – Wan Chai Bypass (CWB) – Central Interchange
5.2.2
No action or limit level exceedance was recorded at ACL1 – City Hall and
ACL2a Contractor HK/2012/08 Site Office in August, September and October 2015
reporting period
Contract no.
HK/2012/08 – Wan Chai Development Phase II – Central – Wan Chai Bypass at Wan
Chai West
5.3.1
One action level exceedance of dissolved oxygen
was recorded on 31 August 2015 during flood tide in the August 2015 reporting
period. After the investigation, the exceedances were concluded as non-project
related.
5.3.2
Three action level exceedances of suspended
solids were recorded on 11 September 2015 during ebb tide, 14 and 28 September
2015 during flood tide in the September 2015 reporting period. Two action level
exceedances of dissolved oxygen were recorded on 22 September 2015 during flood
tide and 26 September 2015 during ebb tide in the September 2015 reporting
period. After the investigation, the exceedances were concluded as non-project
related.
5.3.3
Two action level exceedances of dissolved
oxygen were recorded on 6 October 2015 during flood tide and 12 October 2015
during ebb tide in the October 2015 reporting period. Two action level
exceedances of suspended solids were recorded on 10 and 12 October 2015 during
flood tide in the October 2015 reporting period. After the investigation, the
exceedances were concluded as non-project related.
5.4.1
There was no non-compliance from the site audits in the reporting period. During
environmental site inspections conducted during the reporting period, minor
deficiencies were noted.
5.5.1
There was no non-compliance from the site audits in the reporting
period.
5.6.1
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.
6.0.1.
One environmental complaint was received in
the September 2015 reporting period
6.0.2.
A public complaint regarding water quality
referred by EPD was received by ET on 17 September 2015. The complainant
reported that Silt from Central and Wan Chai Reclamation was spotted along the
coastline (between LUNG WUI ROAD to LUNG WO ROAD, Central & Wan Chai, Hong
Kong).
Based on the
site records confirmed by RSS, removal of seawall blocks by derrick barge was undertaken
by Contract HK/2012/08 at Central Reclamation Phase III works area while mitigation
measures including provision of silt curtain implemented by the Contractor of HK/2012/08
during the seawall block removal works. According to relevant record, muddy dispersion
at HKCEC2W (area opposite to Lung King Street) was observed by the Environmental
Team on 14 September 2015 afternoon. The muddy patch was observed dispersing
outside the outer layer silt curtain deployed by the Contractor of HK/2012/08 towards
the Central Reclamation Phase III area while the outer layer silt curtain was
observed partially opened.
In view of the
above observations, the Contractor was advised to rectify any environmental deficiencies
such that adequate protection such as silt curtain shall be provided for
exposed soil slope to mitigate for potential runoff related water quality impact
to the surrounding waters; outer layer silt curtain deployed shall be entirely
closed during works to safeguard the surrounding water quality. Any opening for
marine vessel shall be closed promptly after passage and localized silt curtain
deployed on site shall be properly maintained to avoid any gap or opening to
effectively safeguard the nearby waters.
6.0.3.
The details of cumulative complaint log
and summary of complaints are presented in Appendix 6.1.
6.0.4. No notification
of summons or prosecution was received in the reporting period. Cumulative statistic on complaints and
successful prosecutions are summarized in Table 6.1 and Table 6.2 respectively.
Table 6.1 Cumulative Statistics on Complaints
|
Reporting Period |
No. of Complaints |
|
Commencement works to last reporting quarter |
2 |
|
August 2015 – October 2015 |
1 |
|
Project-to-Date |
3 |
Table 6.2 Cumulative Statistics on Successful Prosecutions
|
Environmental Parameters |
Cumulative No. Brought Forward |
No. of Successful Prosecutions this quarter (Offence Date) |
Cumulative No. Project-to-Date |
|
Air |
- |
0 |
0 |
|
Noise |
- |
0 |
0 |
|
Water |
- |
0 |
0 |
|
Waste |
- |
0 |
0 |
|
Total |
- |
0 |
0 |
7.0.1.
This section addresses the relevant
cumulative construction impact due to the concurrent activities of the current
projects including the Central Reclamation Phase III (CRIII), Wan Chai
Development Phase II (WDII), Central-WanChai Bypass (CWB), Island Eastern
Corridor Link projects (IECL) and Wan Chai Development Phase II – Central – Wan
Chai Bypass at Wan Chai East (CWB Tunnel).
7.0.2.
According to the Final EM&A report of
Central Reclamation Phase III (CRIII) for Contract HK 12/02, the major
construction activities were completed by end of January 2014 and no
construction activities were undertaken thereafter and the water quality
monitoring was completed in October 2011.
As such, it is considered that there were no cumulative construction
impact due to the concurrent activities of the current projects with the
Central Reclamation Phase III (CRIII) undertaken by contractor HK12/02 in the
reporting period.
7.0.3.
According to the construction programme of
Wan Chai Development Phase II, Central-Wan Chai Bypass and Island Eastern
Corridor Link projects, the major construction activities under Wan Chai
Development Phase II were tunnel works, ELS works and road works at Wan Chai East
and caisson installation, D-wall construction and ELS works at Wan Chai West.
The major construction activities under Central-Wan Chai Bypass and Island
Eastern Corridor Link Projects were bridge construction and road works at
Central Interchange, ELS works at Ex- PCWAW, ELS works and retaining wall
construction at Victoria Park; D- wall construction, ELS works and tunnel works
at TS3; IEC demolition and tunnel works at North Point area in the reporting
period.
7.0.4.
The major environmental impacts generated
from tunnel works at Central and tunnel works at Wan Chai East, IECL and
Causeway Bay Typhoon Shelter were undertaken in the reporting period. With
mitigation measures, no significant air impact from construction activities was
anticipated in the reporting period. Besides, no project-related exceedances
were recorded during the water, air and noise environmental monitoring events
in the reporting period. Thus, it is evaluated that the cumulative construction
impact from the concurrent projects including Wan Chai Development Phase II was
insignificant.
8.0.1. 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.
8.0.2. No non-compliances were noted and no
prosecutions were received during the reporting period.
8.0.3. Mitigation measures according to the
environmental mitigation implementation schedule and the EIA were generally
implemented by the Contractor in this reporting period. Environmental site
audit was conducted by the Environmental Team and the Independent Environmental
Checker and no cumulative environmental impact was identified in the reporting
period. Hence, the EM&A programme was considered effective and shall be
maintained
8.0.4. The
construction programmes of individual contracts are provided in Appendix 8.1.