Civil
Engineering and Development Department
Fill Management
Division
5/F, Civil
Engineering and Development
Building
101 Princess Margaret Road
Homantin, Kowloon
Demolition of Buildings and
Structures in the Proposed Kennedy
Town Comprehensive
Development Area Site
Environmental
Permit No.
EP-136/2002/B
Monthly EM&A Report for Dec
2007
(Phase 1 Part 1) Rev A
Report No.: 203204/EM&A/3/A
January 08
Mott
Connell Limited
7/F,
West Wing Office
Building
New World Centre
20 Salisbury Road
Tsim Sha Tsui,
Kowloon
Hong Kong
Tel:
2828 5757
Fax:
2827 1823
This document
has been prepared for the titled project or named part thereof and should not
be relied upon or used for any other project without an independent check being
carried out as to its suitability and prior written authority of Mott Connell
being obtained. Mott Connell accepts no
responsibility or liability for the consequence of this document being used for
a purpose other than the purposes for which it was commissioned. Any person using or relying on the document
for such other purpose agrees, and will by such use or reliance be taken to
confirm his agreement to indemnify Mott Connell for all loss or damage
resulting therefrom.
Mott Connell accepts no responsibility or liability for this document to
any party other than the person by whom it was commissioned.
To the extent
that this report is based on information supplied by other parties, Mott Connell
accepts no liability for any loss or damage suffered by the client, whether
contractual or tortious, stemming from any
conclusions based on data supplied by parties other than Mott Connell and used
by Mott Connell in preparing this report.
|
|
Demolition of
Buildings and Structures in the Proposed Kennedy Town
Comprehensive Development Area Site
Environmental Permit
No.
EP-136/2002/B
Monthly EM&A
Report for Dec 2007
(Phase 1 Part 1) Rev
A
Report No.: 203204/EM&A/3/A
January 08
|
|
Issue and Revision Record
|
Rev
|
Date
|
Originator
|
Checker
|
Approver
|
Description
|
|
A
|
Jan 2008
|
Brandon Wong
|
Roger Leung
|
Anne F Kerr
|
Submission to EPD
|
|
|
|
|
|
|
|
Pursuant to Condition 3.5 of the Environmental Permit
EP-136/2002/B
This Monthly EM&A Report (Dec 2007) for Phase1 Part 1
Has been reviewed, certified and verified by
The following EM&A members
%20Rev%20A_files/image002.jpg)
Certified by:
Roger Leung
Environmental
Team (ET) Leader
Mott
Connell Ltd.
Date 14 January
2008
Verified by:
Adi Lee
Independent
Environmental Checker (IEC)
Hyder Consulting Limited
Date 14 January
2008
List of Contents Page
EXECUTIVE
SUMMARY iii
1. INTRODUCTION 1-1
1.1 Background
to the Project............................................................................... 1-1
1.2 Coverage
of this EM&A Report...................................................................... 1-1
1.3 Project
Management Organisation................................................................... 1-1
1.4 Project
Program............................................................................................. 1-2
1.5 Works
Undertaken in the Reporting Month....................................................... 1-2
2. EM&A
Requirements 2-1
2.1 Summary
of EM&A Requirements.................................................................. 2-1
2.2 Environmental
Quality Performance Limits....................................................... 2-2
2.3 Event
Action Plan........................................................................................... 2-2
2.4 Implementation
of Environmental Mitigation Measures...................................... 2-2
3. Monitoring
Results 3-1
3.1 Impact
Monitoring Schedule............................................................................ 3-1
3.2 Monitoring
Methodology.................................................................................. 3-1
3.3 Monitoring
Equipment..................................................................................... 3-4
3.4 Equipment
Calibration..................................................................................... 3-5
3.5 Results
of Impact Monitoring........................................................................... 3-5
4. Project
Environmental Status 4-1
4.1 Environmental
Meetings.................................................................................. 4-1
4.2 Status
of Environmental Submissions, Permits and Licenses.............................. 4-1
4.3 Waste
Management Status.............................................................................. 4-1
4.4 Review
of Environmental Monitoring Procedures.............................................. 4-2
4.5 Implementation
Status of Environmental Mitigation Measures............................ 4-2
5. Environmental
COMPLIANTS AND NON-COMPLIANCE 5-1
5.1 Summary
of Environmental Complaints, Notifications of Summons and Successful
Prosecutions 5-1
5.2 Environmental
Enquires................................................................................... 5-1
5.3 Environmental
Events..................................................................................... 5-1
5.4 Environmental
Exceedance/ Non-compliance................................................... 5-1
6. future
key issues 6-1
6.1 Key
Issues and Recommendations for Coming Month....................................... 6-1
7. conclusion
and recommendation 7-1
7.1 Conclusions.................................................................................................... 7-1
7.2 Recommendations.......................................................................................... 7-1
List of Appendices
Appendix
A.......... Environmental Quality
Performance Limits
Appendix
B.......... Event and Action Plans
Appendix
C.......... Schedule of Mitigation Measures
from the EIA/ EM&A Manual
Appendix
D.......... EM&A Schedule
Appendix
E.......... Air Quality Monitoring Results
and Graphical Presentation
Appendix
F.......... Noise Monitoring Results and
Graphical Presentation
List of Tables
Table 2‑1............ Summary of Impact EM&A
Requirements.................................................. 2-1
Table 3‑1............ TSP Monitoring Equipment.......................................................................... 3-4
Table 3‑2............ Air-borne Asbestos Fibre
Monitoring Equipment......................................... 3-4
Table 3‑3............ Noise Monitoring Equipment........................................................................ 3-4
Table 3‑4............ Equipment Calibration Frequencies............................................................ 3-5
Table 3‑5............ Results of 1-Hour TSP Impact Monitoring................................................... 3-5
Table 3‑6............ Results of 1-Hour TSP Impact Monitoring................................................... 3-5
Table 3‑7............ Result of Noise Monitoring........................................................................... 3-6
Table 3‑8............ Monthly Summary Waste Flow Table for 2007........................................... 3-7
Table 4‑1............ Status of Environmental Submissions, Permits and
Licenses.................. 4-1
Table 5‑1............ Summary of Environmental
Complaints and Prosecutions........................ 5-1
Table 5‑2............ Summary of Exceedances.......................................................................... 5-2
Table 5‑3............ Summary of Environmental Site Inspections.............................................. 5-2
Table B‑1............ Event/Action Plan for Air Quality................................................................. B-1
Table B‑2............ Event/Action Plan for Noise Impact............................................................ B-2
Table C‑3........... Implementation Schedule of
Recommended Mitigation Measures............ C-1
Table C-4........... Implementation Schedule of
Recommended Mitigation Measures............ C-4
Table C‑5........... Event Contingency Plan for
Environmental Complaints.......................... C-15
List of Figures
Figure 1.1........... Layout Plan
of Work Site and Neighbouring Sensitive Receivers
Figure 1.2........... Project Organisation Chart
Figure 2.1........... Location of Dust Monitoring Stations
Figure 2.2........... Location of Airborne Asbestos Fibre Monitoring
Stations
Figure 2.3........... Location of Noise Monitoring Stations
EXECUTIVE SUMMARY
The
EM&A programme for this Project commenced on 28 Sep 2007. This report
presents a summary of the environmental monitoring and audit results, list of activities,
and mitigation measures implemented during the reporting month of December 2007.
This
is the 3rd Monthly EM&A Report for works carried out during the
reporting month.
The following
construction activities have taken place during the reporting month: -
·
General site clearance works;
·
Erection of RE site office, and
·
Hoarding erection works;
There
was no removal work for asbestos containing materials (“ACM”) and dioxin/ furan
contaminated materials (“DCM”) carried out during the reporting month.
Hoarding
erection commenced on 18 Dec 2007 and hence regular dust and noise monitoring
began on 21 Dec 2007. As no asbestos abatement has been carried out on-site, no
airborne fibre monitoring has been conducted. In general, the Contractor is
preparing to implement the required mitigation measures and has been reasonably
responsive to the ET’s recommendations on discrepancies observed during the
environmental site inspection of this reporting month.
No
environmental complaint, notification of summons and prosecution was received
or made against the Project in the reporting month.
Site
inspection was carried out on a weekly basis to monitor proper implementation
of environmental pollution control and mitigation measures for the Project. In this
reporting month, site inspections were carried out on 5, 12, 17 and 27 Dec
2007.
No
non-compliances with regard to site environmental audits were recorded in this reporting
month.
A
condition survey for the existing concrete ground slab has been carried out
jointly by the RE and Contractor in Nov 2007 with the view to identify and
agree with EPD on baseline conditions of any surface cracks such that their
structural integrity can be maintained and monitored to avoid exposing the soil
underneath as far as practicable. A baseline condition report has been
submitted by the RE in Dec 2007 to EPD. On 17 Dec 2007, EPD inspected the site
and ground truth the surface cracks and agreed that the Contractor can proceed
with the repair for the documented cracks in the baseline condition report
Future
key issues to be considered in the coming month include: -
·
Hoarding erection and concreting works.
2.1
Summary of EM&A Requirements
2.1.1
The EM&A programme requires environmental
monitoring for air quality, noise, water quality and waste management as
specified in the Updated EM&A Manual dated Dec 2007.
2.1.2
1-hour TSP and 24-hour TSP levels at 2 dust monitoring
stations and airborne asbestos fibre at 3 fibre monitoring stations are to be monitored
during the course of dusty and asbestos abatement work in every reporting month.
These air quality monitoring stations for 24-hour TSP and 1-hour TSP
measurements and airborne fibre are shown in Figure
2.1 and Figure
2.2.
2.1.3
Noise levels at 3 designated monitoring stations are to
be monitored during the course of noisy work in every reporting month. These
noise monitoring stations are shown in Figure
2.3. A summary of impact EM&A requirements is
presented in Table 2‑1 below.
Table 2‑1 Summary of Impact EM&A Requirements
|
Parameters
|
Descriptions
|
Locations
|
Frequencies
|
Duration
|
|
Air Quality
|
24-Hour TSP
|
2 Locations
-A1 & A2a
|
Once every
6 days
|
During dust
generating construction works
|
|
1-Hour TSP
|
2 Locations
-A1 & A2a
|
3 times
every 6 days
|
During dust
generating construction works
|
|
Airborne Asbestos Fibre
|
3 Locations – AF1, AF2 and AF3
|
Daily
|
During
asbestos abatement works
|
|
Noise
|
Leq (30 min), L10, L90,
|
3 Designations
|
Once per
week
|
During
Construction
|
|
Waste
|
On-Site Waste Audit
|
Active Work Sites
|
Weekly
|
During
Construction
|
|
On-Site Waste Inspection
|
|
Wastewater
|
On-Site
audit of surface runoff and trade effluent disposal
|
Active Work Sites
|
Weekly
|
During
Construction
|
|
General
Site Conditions
|
Environmental Site Inspection
|
Works areas and areas affected by works
|
Weekly
|
During
Construction
|
N.B.
A1, AF1, N1 – East of Kennedy Town Abattoir at ground
level
A2a, AF2 – Near Sai See Street
at ground level
AF3 – Kennedy Town Incineration
Plant at ground level
N2 – Southeast of Kennedy Town
Abattoir at ground level
N3 – West of Kennedy Town
Abattoir at ground level
2.2
Environmental Quality Performance Limits
2.2.1
Environmental Quality Performance Limits for air
quality and noise are shown in Appendix AAppendix A.
2.3
Event Action Plan
2.3.1
The Event/ Action Plans for air quality and noise are
shown in Appendix BAppendix B.
2.4
Implementation of Environmental Mitigation Measures
2.4.1
The Contractor is required to implement mitigation
measures listed in the latest EP, EIA Report and Updated EM&A Manual. During
routine site inspections, the Contractor's implementation of mitigation
measures are to inspected and reviewed.
A schedule of the implementation of mitigation measures identified at
the EIA stage is given in Appendix CAppendix C.
Figure 2.1 Location
of Dust Monitoring Stations
Figure 2.2 Location
of Airborne Asbestos Fibre Monitoring Stations
Figure 2.3 Location of Noise Monitoring Stations
3.1
Impact Monitoring Schedule
3.1.1
Regular site inspections were carried out on 5, 12, 17
and 27 Dec 2007 in this reporting month to assess the compliance with
environmental requirements. The EM&A schedule is
given in Appendix DAppendix D.
3.1.2
During this reporting month, hoarding erection works
commenced on 18 Dec 2007, and air quality and noise monitoring commenced on 21
Dec 2007.
3.2
Monitoring Methodology
24-hour TSP Monitoring
Installation
3.2.1
The HVS has been installed close to representative air
sensitive receivers. The following
criteria have been considered in the installation of the HVS.
·
A horizontal platform with appropriate support
to secure the sampler against gusty wind was provided.
·
The distance between the HVS and any obstacles,
such as buildings, was at least twice the height that the obstacle protrudes
above the HVS.
·
A minimum of 2m separation from walls, parapets
and penthouse was required for rooftop sampler.
·
No furnace or incinerator flues were nearby.
·
Airflow around the sampler was unrestricted.
·
Permission was obtained to set up the samplers
and to obtain access to the monitoring stations.
·
A secured supply of electricity is needed to
operate the samplers.
Preparation of Filter Papers
·
Glass fibre filters, G810 are to be labelled with
sufficient filters that are clean and without pinholes.
·
All filters are to be equilibrated in the conditioning
environment for 24 hours before weighing. The conditioning environment
temperature is to be around 25 °C and not variable by more than ±3°C, the
relative humidity (RH) is to be < 50% and not variable by more than ±5 %. A convenient working RH is 40%.
Field Monitoring
·
The power supply is to be secured to ensure the
HVS works properly.
·
The filter holder and the area surrounding the
filter are to be cleaned.
·
The filter holder is to be removed by loosening
the 4 bolts and a new filter, with stamped number upward, on a supporting
screen to be aligned carefully.
·
The filter is to be properly aligned on the
screen so that the gasket forms an airtight seal on the outer edges of the
filter.
·
The swing bolts are to be fastened to hold the
filter holder down to the frame. The
pressure applied is to sufficient to avoid air leakage at the edges.
·
The shelter lid is then closed and is secured
with the aluminium strip.
·
The HVS shall be warmed-up for about 5 minutes
to establish run-temperature conditions.
·
A new flow rate record sheet is to be set into
the flow recorder.
·
The flow rate of the HVS is to be checked and
adjusted at around 1.1 m3/min. The range specified in the updated EM&A
Manual is between 0.6-1.7 m3/min.
·
The programmable timer is set for a sampling period
of 24 hrs + 1 hr, and the starting time, weather condition and the filter
number are to be recorded.
·
The initial elapsed time is to be recorded.
·
At the end of sampling, the sampled filter is to
be removed carefully and folded in half length so that only surfaces with
collected particulate matter are in contact.
·
It was then placed in a clean plastic envelope
and sealed.
·
All monitoring information is to be recorded on
a standard data sheet.
·
Filters are to be sent to a HOKLAS accredited
laboratory for analysis.
Maintenance and Calibration
·
The HVS and its accessories are to be maintained
in good working condition, such as replacing motor brushes routinely and
checking electrical wiring to ensure a continuous power supply.
·
HVSs are to be calibrated
at a bi-monthly intervals using GMW-25 Calibration Kit throughout all stages of
the air quality monitoring.
1-hour TSP Monitoring
Field Monitoring
3.2.2
The measuring procedures of the 1-hour dust meter are to
be in accordance with the Manufacturer’s Instruction Manual as follows:
·
Set POWER to “ON”, push BATTERY
button, make sure that the meter’s indicator is in the range with a red line
and allow the instrument to stand for about 3 minutes (Then, the air sampling
inlet has been capped).
·
Push the knob at MEASURE position.
·
Push “O-ADJ” button. (Then meter’s indication is
0).
·
Push the knob at SENSI ADJ position and set the
meter’s indication to S value described on the Test Report using the trimmer
for SENSI ADJ.
·
Pull out the knob and return it to MEASURE
position.
·
Push “START” button.
Maintenance and Calibration
·
The 1-hour TSP meter would be checked at 3-month
intervals and calibrated at 1-year intervals throughout all stages of the air
quality baseline monitoring.
Airborne Asbestos Fibre Monitoring
3.2.3
All airborne sampling procedures and specification
shall comply with EH10 guidance note and MDHS 39/3 (HSE UK). All air test results and log
sheets prepared by the Contractor shall be submitted to ET Leader for reporting
purpose.
3.2.4
Air measurement of a minimum of 480 L shall be taken
after commencement of abatement work. Results must be below 0.01 fibre/ ml.
3.2.5
However, no asbestos fibre monitoring was carried out
because of absence of asbestos abatement activities.
Noise Monitoring
Field Monitoring
·
The Sound Level Meter is to be set on a tripod
at a height of 1.2 m above the ground.
·
Facade measurements are to be made at all 3 monitoring
locations.
·
The battery condition is to be checked to ensure
the correct functioning of the meter.
·
Parameters such as frequency weighting, the time
weighting and the measurement time are to be set as follows:
o
Frequency weighting: A
o
Time weighting: Fast
o
Time measurement: Three 30 minutes intervals
(between 07:00 and 19:00 on normal weekdays) / Three 15 minutes intervals
(average 3 consecutives Leq (5min)) (between
0700-1900 hrs on general holidays)
·
Prior to and after each noise measurement, the
meter is to be calibrated using a Calibrator for 94 dB at 1000 Hz. If the difference in the calibration level
before and after measurement is more than 1 dB, the measurement would be
considered invalid and repeat of noise measurement would be required after
re-calibration or repair of the equipment.
·
During the monitoring period, the Leq, L10 and L90 would be recorded. In addition, site conditions and noise
sources are to be recorded on a standard record sheet.
·
Noise measurement should be paused during
periods of high intrusive noise (e.g. dog barking, helicopter noise) if
possible. Observations should be recorded when intrusive noise is unavoidable.
·
Noise monitoring is to be cancelled in the
presence of fog, rain, wind with a steady speed exceeding 5 m/s, or wind with
gusts exceeding 10 m/s.
Maintenance and Calibration
·
The microphone head of the sound level meter and
calibrator is to be cleaned with soft cloth at quarterly intervals.
·
The meter and calibrator are sent to the
supplier or HOKLAS laboratory to check and calibrate at yearly intervals.
3.3
Monitoring Equipment
Air Quality (Dust)
3.3.1
The equipment used for air quality (dust) monitoring is
listed in Table 3‑1Table 3‑1.
Table 3‑1 TSP
Monitoring Equipment
|
Equipment
|
Model
|
|
HVS Sampler
|
GMWS 2310 Accu-vol
system
|
|
Calibrator
|
GMW 25
|
|
1-hour TSP Dust Meter
|
8520 Dust Track Aerosol Monitor
|
Air Quality (Airborne Asbestos Fibre)
3.3.2
To be confirmed by the Contractor undertaking the
airborne asbestos fibre monitoring.
Table 3‑2 Air-borne
Asbestos Fibre Monitoring Equipment
|
Equipment
|
Model
|
|
To be confirmed
|
To be confirmed
|
Noise
3.3.3
The equipment used for noise monitoring is listed in Table 3‑3Table 3‑3.
Table 3‑3 Noise Monitoring Equipment
|
Equipment
|
Model
|
|
Integrating Sound Level Meter
|
Rion NL-31
|
|
Calibrator
|
Rion NC-73
|
3.4
Equipment
Calibration
3.4.1
The calibration frequencies
of the monitoring equipment are provided in Table
3‑4.
Table 3‑4 Equipment Calibration Frequencies
|
Equipment
|
Calibration
Frequency
|
Last
Calibration Date
|
|
High Volume Sampler
GMWS 2310 Accu-vol system
|
Every two months
|
23 Dec 2007 (A1)
21 Dec 2007 (A2a)
|
|
1-hour TSP Dust Meter
8520 Dust Track Aerosol Monitor
|
Every year
|
28 Sep 2007
|
|
Integrated SLM
Rion NL-31
|
Every year
|
29 March 2007
|
|
Sound level calibrator
Rion NC-73
|
Every year
|
25 June 2007
|
3.5
Results of Impact
Monitoring
Air Quality (1-hr TSP)
3.5.1
Results of 1-hour
TSP level are summarised in Table 3‑5Table 3‑5. Detailed
results, including weather conditions, and graphical presentations are included
in Appendix EAppendix E.
Table 3‑5 Results of
1-Hour TSP Impact Monitoring
|
Monitoring Station
|
1-hour TSP
Range (µg/m3)
|
Action Level (µg/m3)
|
Limit Level (µg/m3)
|
|
A1
|
89 – 121
|
369.1
|
500
|
|
A2a
|
93 – 121
|
357.3
|
500
|
3.5.2
No exceedance of Action / Limit Levels for 1-hr TSP was
recorded in the reporting month.
Air Quality
(24-hr TSP)
3.5.3
Results of 24-hour
TSP level are summarised in Table 3‑6Table 3‑6. Detailed
results, including weather conditions, and graphical presentations are included
in Appendix EAppendix E.
Table 3‑6 Results of 124-Hour
TSP Impact Monitoring
|
Monitoring Station
|
1-hour TSP
Range (µg/m3)
|
Action Level (µg/m3)
|
Limit Level (µg/m3)
|
|
A1
|
67.8 – 90.9
|
180.4
|
260
|
|
A2a
|
71.1 – 79.7
|
177.8
|
260
|
3.5.4
No exceedance of Action / Limit Levels for 24-hr TSP was
recorded in the reporting month.
Noise
3.5.5
Results of
measured noise level, in terms of Leq (30min), during
construction are summarised in Table
3‑7. Detailed
results, including weather conditions, and graphical presentations are
presented in Appendix FAppendix F.
Table 3‑7 Result of Noise Monitoring
|
Monitoring Station
|
Measured Leq(30 min) Range, dB(A)
|
Limit Level, dB(A)
Leq (30min) (0700 – 1900 hours on normal weekdays)
|
|
N1
|
69.2 – 71.2
|
75
|
|
N2
|
66.3 – 66.9
|
75
|
|
N3
|
73.6 – 88.7
|
75
|
3.5.6
During the
reporting month, one exceedance of the construction noise
limit level was recorded at N3 on 27 Dec 2007 up to a level of 88.7 dB(A) [Leq 30min]. The ET has
issued an exceedance notification on 4 Jan 2008. However,
exceedance of the limit level was caused by
non-project related high breaker noise from road works at Sai Ning Street
by others. No actions have been recommended as the exceedance
was not project related.
Waste Management
Table 3‑8 Monthly Summary Waste Flow Table for 2007
|
Month
|
Actual Quantities of Inert C&D Materials Generated
Monthly
|
Actual Quantities of C&D Wastes Generated Monthly
|
|
Total Quantity Generated
|
Broken Concrete
|
Reused in the Contract
|
Reused in other Projects
|
Disposed of at Public Fill
|
Metals
|
Paper/ Cardboard
|
Plastics
|
Chemical waste
|
Others (e.g. refuse)
|
|
(In ‘000 tons)
|
(In ‘000 tons)
|
(In ‘000 tons)
|
(In ‘000 tons)
|
(In ‘000 tons)
|
(In ‘000 kg)
|
(In ‘000 kg)
|
(In ‘000 kg)
|
(In ‘000 kg)
|
(In ‘000 tons)
|
|
Est.
|
Act.
|
Est.
|
Act.
|
Est.
|
Act.
|
Est.
|
Act.
|
Est.
|
Act.
|
Est.
|
Act.
|
Est.
|
Act.
|
Est.
|
Act.
|
Est.
|
Act.
|
Est.
|
Act.
|
|
Jan
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Feb
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Mar
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Apr
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
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|
|
May
|
|
|
|
|
|
|
|
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|
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|
|
|
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|
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|
|
June
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Sub-total
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Jul
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Aug
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Sep
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Oct
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
|
Nov
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
|
Dec
|
0.05
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0.001
|
0
|
0.001
|
0
|
0.0001
|
0
|
0.0001
|
0
|
0.05
|
0
|
|
Total
|
0.05
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0.001
|
0
|
0.001
|
0
|
0.0001
|
0
|
0.0001
|
0
|
0.05
|
0
|
4.1
Environmental
Meetings
4.1.1
One environmental
meeting was held on the day of the monthly site inspection on 17 Dec 2007.
4.2
Status of
Environmental Submissions, Permits and Licenses
4.2.1
A summary of
status of all environmental submissions, permits, licenses, and/or
notifications to EPD for this Project during the reporting period is presented
in Table 4‑1 below.
Table 4‑1 Status
of Environmental Submissions, Permits and Licenses
|
Item
|
Description
|
Date of
Application
|
Status
|
|
1.
|
Environmental Permit (EP No. EP-136/2002/B)
|
27 Sep 2007
|
Valid
|
|
2.
|
Billing Account under Waste Disposal (charges for Disposal
of Construction Waste) Regulation (a/c no.: 7006217)
|
Approved on
31 Oct 2007
|
Valid
|
|
3.
|
Waste Management Plan
|
v1.1 on 9 Nov 2007
v2.0 on 4 Dec 2007
|
EPD provided comments on v1.1 on 22 Nov 2007. It was
addressed and re-submitted on 4 Dec 2007. Further comments on v2.0 were
released on 19 Dec 2007.
|
|
4.
|
Environmental Management Plan
|
29 Oct 2007
|
RE provided comments on 9 Nov 2007. Pending revision by
Contractor.
|
|
5.
|
Chemical Waste Producer (ref. no.: WPN5213-111-H2999-02)
|
23 Oct 2007
Approved on 6 Nov 2007
|
Valid
|
|
6.
|
Effluent Discharge Licence under Water Pollution
Control Ordinance
|
27 29 Oct
2007
|
Pending EPD’s approval.
|
|
7.
|
Licence under Water Pollution Control Ordinance
|
29 Oct 2007
|
Pending EPD’s approval
|
|
New submissions
|
|
|
None in the reporting month
|
|
|
|
|
|
|
|
|
|
|
|
4.3
Waste Management
Status
4.3.1
Inert C&D
materials and non-inert C&D wastes were generated by the Project in the reporting
month are as shown Table
3‑8. A trip ticket system has been implemented for all
off-site waste disposals.
4.4
Review of
Environmental Monitoring Procedures
4.4.1
The monitoring
works conducted by the Environmental Team have been reviewed. No changes in the
environmental monitoring procedures are considered necessary at this stage.
4.5
Implementation Status
of Environmental Mitigation Measures
4.5.1
An Implementation
Schedule of Mitigation Measures from the EIA/ EM&A Manual has been given in
Appendix CAppendix C.
4.5.2
During this
reporting month, there has not been major progress that warrants the
implementation of the listed mitigation measures.
5.1
Summary of
Environmental Complaints, Notifications of Summons and Successful Prosecutions
5.1.1
No environmental
complaints have been received during the reporting month. Appendix BAppendix B presents the environmental complaint event
contingency plan of the Project and Table 5‑1Table 5‑1 below presents a statistics of complaints,
notification of summons and successful prosecution since the commencement of
the Project.
Table 5‑1 Summary
of Environmental Complaints and Prosecutions
|
Complaints Logged
|
Summons Served
|
Successful
Prosecution
|
|
Dec 2007
|
Cumulative
|
Dec 2007
|
Cumulative
|
Dec 2007
|
Cumulative
|
|
0
|
0
|
0
|
0
|
0
|
0
|
5.1.2
No environmental
complaint, notification of summons and prosecution has been received or made
against the Project in this reporting month.
5.2
Environmental
Enquires
5.2.1
No environmental
enquiries were received during the reporting month.
5.3
Environmental
Events
5.3.1
No unusual events
were recorded during the reporting month.
5.4
Environmental Exceedance/ Non-compliance
5.4.1
The Event and
Action Plans for air quality and noise are presented in Appendix BAppendix B.
Air Quality - Dust
5.4.2
No exceedance of the Action and Limit Levels for 1-hour and
24-hour TSP was recorded.
Air Quality – Airborne
Asbestos Fibre
5.4.3
Not applicable. No
airborne asbestos fibre monitoring was undertaken during this reporting month
as no asbestos abatement works were carried out.
Noise Impact
5.4.4
One exceedance of the Limit Level was recorded. However, exceedance of the limit level was caused by non-project related
high breaker noise from road works at Sai Ning Street
by others. No actions have been recommended as the exceedance
was not project related.
Wastewater
5.4.5
No surface runoff
observed due to the dry weather and no discharge of trade effluent observed.
Contractor is proposing modification of existing draining system to control surface
runoff during demolition and abatement works to satisfy the requirements of
WPCO. Site specific measures other than the generic ones mentioned in Table C-4
will be presented and reviewed once available.
Waste Management
5.4.6
Not applicable.
Summary of Exceedances
5.4.7
Table 5‑2 summarises the total number of exceedances
for air quality and noise monitoring recorded during the reporting period.
Table 5‑2 Summary of Exceedances
|
Parameters
|
Total no.
of Measurements
|
Action
Level Exceedance
|
% of Action Level Exceedance
|
Limit Level Exceedance
|
% of Limit Level Exceedance
|
|
Air
Quality
|
16
|
0
|
0%
|
0
|
0%
|
|
Noise
|
6
|
N/A
|
N/A
|
1
|
16%
|
Note: 'N/A' – Not
applicable. Action level for noise relates to the number of documented
complaints received
5.4.8
No valid exceedance was
recorded in the reporting period.
Site Environmental
Audit
5.4.9
Site inspection is
to be carried out on a weekly basis to monitor proper implementation of environmental
pollution control and mitigation measures for the Project. In this reporting month,
one monthly site inspection was carried out jointly by the Contractor, ET and
IEC on 17 Dec 2007 and weekly site inspections were carried out by the
Contractor and ET on 5, 12 and 27 Dec 2007.
5.4.10
Major findings provided
by ET and those jointly provided by the ET and IEC on 17 Dec 2007 from the site
inspections are summarised in Table
5‑3 below.
Table 5‑3 Summary of Environmental Site
Inspections
|
Date of Inspection
|
Major Observations
|
Action(s)
|
|
5 December 2007
|
The Contractor was advised to replace some defective drip
trays as soon as possible.
|
Defective drip trays were removed and replaced by new drip
trays.
|
|
A rubbish bin was provided for general refused
at a works site. However, the Contractor is reminded to ensure that no items
of refused in the bin enters the open sea.
|
Rubbish bin was moved away from the edge of the pier and
covered.
|
|
12 December 2007
|
A small amount of oil in a drip tray was observed. The
Contractor is reminded to clear the drip tray as soon as possible.
|
Oil in the drip tray was cleared.
|
|
17 December 2007
|
Water at a disused oil tank house was found to have
disappeared. The water collected at the trough was found contaminated with
oil on the surface and was documented in the WMP submitted to EPD for
agreement of treatment and disposal method. The Contractor was recommended to
investigate the issue.
|
Investigation of water at disused oil tank house by
Contractor is in progress. Water was observed in the following site
inspection on 27 Dec 2007. It was believed that this was partly due to rain
water collected in the trough.
|
|
The Contractor was reminded to
dispose of general refuse accumulated on site properly.
|
General refuse accumulated on site was disposed of properly.
|
|
27 December 2007
|
No major observations.
|
|
5.4.11
No non-compliances
with regard to site environmental audit were observed in this reporting month.
Conditions of
Identified Surface Cracks
5.4.12
In accordance with
EP Conditions 2.5 (e), inspection findings and repair works carried out should
be reported in the monthly EM&A Report.
5.4.13
To date, there
were no further inspection findings since the baseline condition report and no
repair work carried out yet.
7.1
Conclusions
7.1.1
EM&A was
performed in December 2007. All monitoring and audit results, if any, in the reporting
month were checked and reviewed.
7.1.2
Dust and noise
monitoring began during the reporting month following the commencement of
hoarding erection works. One exceedance of the
construction noise Limit Level was recorded, but this is not considered to be project
related. No exceedances of the Action and Limit
Levels for dust were recorded. Furthermore, as no asbestos abatement activities
were carried out in the reporting month, no airborne fibre monitoring was
conducted.
7.1.3
In general, the
Contractor is preparing to implement required mitigation measures and has been
reasonably responsive to the ET’s recommendations on discrepancies observed
during environmental site inspections of this reporting month.
7.1.4
No environmental
complaints, notification summons or successful prosecutions have been received
or made against this Project in this reporting month.
7.2
Recommendations
7.2.1
No recommendations
made at this stage pending more site progress achieved.
Action and Limit Levels for
24-hour TSP
|
Monitoring
Station
|
Action
Level (mg/m3)
|
Limit Level
(mg/m3)
|
|
A1
|
180.4
|
260
|
|
A2a
|
177.8
|
260
|
Action and Limit Levels for
1-hour TSP
|
Monitoring
Station
|
Action
Level (mg/m3)
|
Limit Level
(mg/m3)
|
|
A1
|
369.1
|
500
|
|
A2a
|
357.3
|
500
|
Action and Limit Levels (Leq) for Construction Noise
|
Time Period
|
Action Level
|
Limit Level
(dB(A)),
Leq (30min)
|
|
N1
|
N2
|
N3
|
|
0700 –
1900 hours on normal weekdays
|
When
one documented complaint is received from any one of the sensitive receivers
|
75
|
75
|
75
|
|
0700 – 2300 hours on public
holidays including Sundays and
1900 – 2300 hours on all days
|
Subject
to requirements stipulated in future Construction Noise Permits
|
|
2300 – 0700 on all days
|
Table B‑1 Event/Action
Plan for Air Quality
|
EVENT
|
ACTION
|
|
ET
|
IEC
|
ER
|
CONTRACTOR
|
|
ACTION LEVEL
|
|
1. Exceedance for one sample
|
1. Identify
source
2. Inform
IEC and ER
3. Repeat
measurement to confirm finding
4. Increase
monitoring frequency to daily
|
1. Check
monitoring data submitted by ET
2. Check
Contractor’s working method
|
1. Notify Contractor
2. Check monitoring data and
Contractor's working methods
|
1. Rectify
any unacceptable practice
2. Amend
working methods if appropriate
|
|
2. Exceedance
for two or more consecutive samples
|
1. Identify
source
2. Inform
IEC and ER
3. Repeat
measurements to confirm findings
4. Increase
monitoring frequency to daily
5. Discuss
with Contractor , IEC and ER for remedial actions required
6. If
exceedance continues, arrange meeting with IEC and
ER
7. If
exceedance stops, cease additional monitoring
|
1. Checking
monitoring data submitted by ET
2. Check
Contractor’s working method
3. Discuss
with ET and Contractor on possible remedial measures
4. Advise
the ER on the effectiveness of the proposed remedial measures
5. Supervise
implementation of remedial measures
|
1. Confirm receipt of notification
of failure in writing
2. Notify Contractor
3. Check monitoring data and
Contractor's working methods
4. Discuss with IEC and Contractor
on potential remedial actions
5. Ensure remedial actions properly
implemented
|
1. Submit
proposals for remedial actions to ER within 3 working days of notification
2. Implement
the agreed proposals
3. Amend
proposal if appropriate
|
|
LIMIT LEVEL
|
|
1. Exceedance for one
sample
|
1. Identify source
2. Inform ER and EPD
3. Repeat measurement to confirm
finding
4. Increase monitoring frequency to
daily
5. Assess effectiveness of
Contractor's remedial actions and keep IEC, EPD and ER informed of the
results
|
1. Checking monitoring data
submitted by ET
2. Check Contractor’s working method
3. Discuss with ET and Contractor on
possible remedial measures
4. Advise the ER on the
effectiveness of the proposed remedial measures
5. Supervisor implementation of
remedial measures
|
1. Confirm receipt of notification
of failure in writing
2. Notify Contractor
3. Check monitoring data and
Contractor's working methods
4. Discuss with ET Leader and
Contractor potential remedial actions
5. Ensure remedial actions properly
implemented
|
1. Take immediate action to avoid
further exceedance
2. Submit proposals for remedial
actions to ER within 3 working days of notification
3. Implement the agreed proposals
4. Amend proposal if appropriate
|
|
2. Exceedance
for two or more consecutive samples
|
1. Identify source
2. Inform IEC, ER and EPD the causes
& actions taken for the exceedances
3. Repeat measurement to confirm
findings
4. Increase monitoring frequency to
daily
5. Investigate the causes of exceedance, Contractor’s working procedures to identify
possible mitigation
6. Arrange meeting with IEC and ER
to discuss the remedial actions to be taken
7. Assess effectiveness of
Contractor's remedial actions and keep IEC, EPD and ER informed of the
results
8. If exceedance
stops, cease additional monitoring
|
1. Discuss amongst ER, ET and
Contractor as the potential remedial actions
2. Review Contractor’s remedial
actions whenever necessary to ensure their effectiveness and advise the ER
accordingly
3 Supervise the implementation of
remedial measures
|
1. Confirm receipt of notification
of failure in writing
2. Notify Contractor
3. Carry out analysis of
Contractor's working procedures with IEC to determine possible mitigation to
be implemented
4. Discuss amongst Environmental
Team Leader and the Contractor potential remedial actions
5. Review Contractor's remedial
actions whenever necessary to assure their effectiveness
6. If exceedance
continues, consider what portion of the work is responsible and instruct the
Contractor to stop that portion of work until the exceedance
is abated
|
1. Take immediate action to avoid
further exceedance
2. Submit proposals for remedial
actions to ER within 3 working days of notification
3. Implement the agreed proposals
4. Resubmit proposals if problem
still not under control
5. Stop the relevant portion of
works as determined by the ER until the exceedance
is abated
|
Table B‑2 Event/Action Plan for Noise
Impact
EVENT
|
ACTION
|
|
ET
|
IEC
|
ER
|
CONTRACTOR
|
|
Action Level is reached
|
1.
Inform IEC and ER
2.
Carry out investigation
3.
Report the results of the
investigation to the IEC and Contractor
4.
Discuss with the Contractor and
formulate remedial measures
|
1.
Discuss amongst ER, ET and Contractor
on the potential remedial actions
2.
Review Contractor's remedial actions
whenever necessary to assure their effectiveness and advise the ER
accordingly
3.
Supervise the implementation of
remedial measures
|
1.
Confirm receipt of notification of
failure in writing
2.
Notify Contractor
3.
Require Contractor to propose
remedial measures for the analyzed noise problem
4.
Ensure remedial measures are properly
implemented
|
1.
Submit noise mitigation proposal to IEC
2.
Implement noise mitigation proposals
|
|
Limit Level is reached
|
1.
Inform IEC, ER, EPD and Contractor
2.
Identify source
3.
Repeat measurement to confirm
findings
4.
Carry out analysis of Contractor's
working procedures to determine possible mitigation to be implemented
5.
Inform IEC, ER and EPD the causes
& actions taken for the exceedances
6.
Assess effectiveness of Contractor's
remedial actions and keep IEC, EPD and ER informed of the results
7.
If exceedance
stops cease additional monitoring
|
1.
Discuss amongst ER, ET and Contractor
on the potential remedial actions
2.
Review Contractor's remedial actions
whenever necessary to assure their effectiveness and advise the ER
accordingly
3.
Supervise the implementation of
remedial measures
|
1.
Confirm receipt of notification of
failure in writing
2.
Notify Contractor
3.
Require Contractor to propose
remedial measures for the analyzed noise problem
4.
Ensure remedial measures are properly
implemented
5.
If exceedance
continues, consider what portion of the work is responsible and instruct the
Contractor to stop that portion or work until the exceedance
is abated
|
1.
Take immediate action to avoid
further exceedance
2.
Submit proposals for remedial actions
to IEC within 3 working days of notification
3.
Implement the agreed proposals
4.
Resubmit proposals if problem still
not under control
5.
Stop the relevant portion of works as
determined by the ER until the exceedance is abated
|
Appendix C Schedule of Mitigation Measures from
the EIA/ EM&A Manual
Table C‑3 Implementation Schedule of
Recommended Mitigation Measures
|
No.
|
Activity
|
Mitigation/
EIA Recommendations
|
Responsibility
for Implementation
|
Location
Duration
completion
Of
measures
|
Implementation
Stage
|
Relevant
Guidelines Legislation
|
|
1
|
Ash Disposal
|
|
|
|
|
|
|
I
|
Treatment
|
The
ash deposits are mainly contaminated by dioxins and furans and mixed with
asbestos containing materials. Handling, transportation and disposal of the
ash waste in line with relevant regulations. Collection, immobilisation and
testing of waste for disposal to landfill shall be carried out according to
the relevant regulations and recommendations of the EIA including
immobilisation by collection and mixing the ash material with cement. Pilot mixing and TCLP tests should establish
the ratio of cement to ash to the satisfaction of EPD. Ash waste to be treated and placed into
steel drums lined with plastic sheeting.
The drums should be adequately sealed and in new or good condition. Prior agreement of the disposal criteria
from EPD and agreement to disposal from the landfill operator must be
obtained.
As an
additional measure, release of contaminants from disturbed ash should be
minimised prior to gathering up the ash materials and amended water
containing a wetting agent should be sprayed on the ash. The wetting agent will assist in water
penetration to thoroughly soak the ash and ensure dust levels are reduced without
using excessive water. The use of amended water for dust suppression will
minimise the use of excessive water that would result in surface runoff in
the removal process. Dust suppression
can be carried out in a controlled manner and no insurmountable environmental
problem would result
|
CEDD’s Contractor
|
KTCDA work areas. Duration of the ash
removal
|
A@
|
1, 10, EIA
|
|
II
|
Disposal
|
To monitor the disposal of waste at landfills, a
“trip-ticket” system (WBTC No. 5/99) for all solid waste transfer/disposal
operations should be implemented. The
system should be included as a contractual requirement, and monitored by the
Environmental Team and audited by the Independent Checker (Environment).
|
CEDD’s Contractor
|
As above
|
A
|
1, 5, 9
|
|
III
|
Asbestos
Removal
|
An asbestos abatement programme should be submitted to EPD
for approval prior to the commencement of the asbestos abatement work.
|
CEDD and
Contractor
|
As above
|
A
|
4
|
|
2
|
Demolition
|
|
|
|
|
|
|
A
|
Non-blasting
Methodology
|
Waste
Management Plan to be submitted to EPD.
Demolition by Non-Blasting Methodology Only. All structures and buildings should be
demolished and removed prior to demolition of chimneys
|
CEDD
|
KTCDA work areas. Duration of the
demolition
|
C#
|
8
|
|
B
|
Material
Storage
|
Covers for dusty stockpiles and control of dust emissions from construction
(demolition) works requires appropriate dust control measures to be
implemented in accordance with the requirements in the Air Pollution Control
(Construction Dust) Regulation.
|
CEDD’s Contractor
|
As above
|
C
|
4
|
|
C
|
Vehicle
movement
|
Haul
road watering, vehicle wheel wash prior to exit. Where practical, access roads should be
protected with crushed gravel.
|
CEDD’s Contractor
|
As above
|
C
|
4
|
|
D
|
Plant
maintenance
|
All
plant shall be maintained to prevent any undue air emissions.
|
CEDD’s Contractor
|
As above
|
Prior to start of works
|
4
|
|
E
|
Improved
Site Hoarding
|
Boundary hoarding to be
modified in form of noise barrier to provide effective noise screening and
made of panels with a superficial surface density of at least 10 kg/m3
|
CEDD’s Contractor
|
As above
|
C
|
Env. Permit
|
|
F
|
Demolition
Sequence
|
Include
careful consideration and positioning of portable noise barriers to allow
noise attenuation.
|
CEDD’s Contractor
|
As above
|
C
|
8
|
|
G
|
Portable
Noise Barriers
|
Moveable noise barriers
shall be provided close to PME in cases where, in the opinion of the
Engineer, such PME has the potential to cause noise nuisance to sensitive
receivers and where a benefit will result.
Such barriers shall be made of panels with superficial surface density
not less than 10 kg/m3.
|
CEDD’s Contractor
|
As above
|
C
|
Env. Permit
|
|
H
|
Plant
Operation
|
Modify
continuous operational periods for noisy plant to comply with noise criteria.
|
CEDD’s Contractor
|
As above
|
C
|
Env Permit
|
|
I
|
Demolition
Techniques
|
Selection
of non-blasting demolition techniques to minimise noise and vibration.
|
CEDD’s Contractor
|
As above
|
C
|
8
|
|
J
|
Plant
maintenance
|
All
plant shall be maintained to prevent any undue noise nuisance.
|
CEDD’s Contractor
|
As above
|
C
|
2, 3
|
|
K
|
Wheel
wash
|
All
wheel wash water shall be diverted to a sediment pit.
|
CEDD’s Contractor
|
As above
|
C
|
5
|
|
L
|
Sediment
control
|
Sediment
removal facilities shall provided and be maintained and excavated as
necessary to prevent sedimentation of channels. Perimeter channels should be provided.
Works should be programmed for the dry season where feasible. Environmental
guidelines for the handling and disposal of discharges from construction
sites, as stipulated in the Practice Note for Professional Persons,
Construction Site Drainage (ProPECC PN 1/94) to be followed.
|
CEDD’s Contractor
|
As above
|
C
|
5, 12
|
|
M
|
Surface
water diversion
|
All
clean surface water shall be diverted around the site.
|
CEDD’s Contractor
|
As above
|
C
|
5, 12
|
|
N
|
Fuel can
storage
|
All fuel
cans shall be placed within a bunded area. Any fuel
spills shall be mopped up as necessary.
|
CEDD’s Contractor
|
As above
|
C
|
5,6
|
|
O
|
Material,
plant movement & fuel can filling.
|
Any fuel
or oil spills shall be excavated and disposed of.
|
CEDD’s Contractor
|
As above
|
C
|
6,7
|
|
P
|
Generators
|
All
generators shall be placed within a bunded area.
Any fuel spills shall be mopped up as necessary.
|
CEDD’s Contractor
|
As above
|
C
|
5,6,7
|
|
Q
|
Material
containers
|
All
empty bags and containers shall be collected for disposal.
|
CEDD’s Contractor
|
As above
|
C
|
6,7
|
|
R
|
Worker
generated litter and Waste
|
Litter
receptacles shall be placed around the site. Litter shall be taken regularly
to the refuse collection points. Chemical toilets (or suitable equivalent)
should be provided for workers. Any canteens should have grease traps.
|
CEDD’s Contractor
|
As above
|
C
|
6
|
|
S
|
Neighbourhood
nuisance
|
All
complaints regarding construction works shall be relayed to the environmental
team.
|
CEDD’s Contractor
|
As above
|
C
|
1, 6
|
|
T
|
Legal
requirements
|
Different
types of waste should be segregated, stored, transported and disposed of in
accordance with the relevant legislative requirements and guidelines
|
CEDD’s Contractor
|
As above
|
C
|
1,6
|
|
U
|
On-site
separation
|
On-site
separation of municipal solid waste and construction/demolition wastes shall
be conducted in order to minimise the amount of solid waste to be disposed to
landfill.
|
CEDD’s Contractor
|
As above
|
C
|
1, 11
|
|
V
|
Temporary
storage area
|
Separated
wastes should be stored in different containers, skips, or stockpiles to
enhance reuse or recycling of materials and encourage their proper disposal.
|
CEDD’s Contractor
|
As above
|
C
|
1, 11
|
|
W
|
Record
of wastes
|
Records
of quantities of wastes generated, recycled and disposed (with locations)
shall be kept.
|
CEDD’s Contractor
|
As above
|
C
|
1, 9
|
|
X
|
Trip-ticket
system
|
To
monitor the disposal of waste at landfills and control fly-tipping, a
“trip-ticket” system under WBTC N0.5/99 for all solid waste transfer/disposal
operations should be implemented. The
system should be included as a contractual requirement, and monitored by the
Environmental Team and audited by the Independent Checker (Environment).
|
CEDD’s Contractor
|
As above
|
C
|
1, 9
|
|
|
|
|
|
|
|
|
|
4
|
Monitoring and Audit
|
To be
carried out in accordance with the Implementation Schedule in Table AC-2.
|
CEDD*/
Contractor/ RSS
|
KTCDA works areas
During demolition
|
C
|
1
|
* Normally
undertaken by a specialist monitoring team employed directly by the proponent
and audited by the IEC
@ A = during
ash removal (before demolition)
# C
= during construction (i.e. demolition phase).
1.
Environmental Impact Assessment Ordinance Technical
Memorandum (EIAO)
2.
Noise Control Ordinance
3.
The ProPECC Note PN2/93
(Construction Noise daytime limits)
4.
Air Pollution Control Ordinance (APCO)
5.
Water Pollution Control Ordinance (WPCO)(Cap. 358)
6.
Waste Disposal Ordinance (Cap 354)
7.
Waste Disposal (Chemical Waste)(General) Regulation
(Cap 354)
8.
Draft Code of Practice on Demolition of Buildings (BD,
1998)
9.
Works Bureau Technical Circular No. 5/99, Trip-ticket
System for Disposal of Construction and Demolition Material
10.
Guidance Notes for Investigation and Remediation of
Contaminated Sites
11.
Works Bureau Technical Circular No. 5/98, On Site
Sorting of Construction Waste on Demolition Sites
12.
ProPECC Note PN 1/94Construction
Site Drainage
Table C-4 Implementation Schedule of Recommended Mitigation Measures
|
EIA Ref.
|
EM&A Ref.
|
Environmental Protection Measures / Mitigation Measures
|
Location / Timing
|
Implementation Agent
|
Implementation
Stage
|
Relevant Legislation and Guidelines
|
|
D
|
C
|
O
|
|
Air Quality
|
|
6.3.2
|
|
Adoption of good site practices and avoid practices likely to raise
dust level
|
KTCDA Site - Phase 1 Part 1
|
CEDD’s Contractor
|
|
ü
|
|
|
|
6.3.2
|
|
Frequent cleaning and damping down of stockpiles and dusty
areas of the Site.
|
KTCDA Site - Phase 1 Part 1
|
CEDD’s Contractor
|
|
ü
|
|
APCO (Cap. 311); Air
Pollution Control (Construction Dust) Regulation; EIAO-TM
|
|
6.3.2
|
|
Reducing drop height during material handling or wall
felling.
|
KTCDA Site - Phase 1 Part 1
|
CEDD’s Contractor
|
|
ü
|
|
APCO (Cap. 311); Air
Pollution Control (Construction Dust) Regulation; EIAO-TM
|
|
6.3.2
|
|
Imposing a vehicle speed restriction of 15 km/hr within the
Site and confine haulage and waste collection vehicles to designated
roadways inside the site.
|
KTCDA Site - Phase 1 Part 1
|
CEDD’s Contractor
|
|
ü
|
|
APCO (Cap. 311); Air
Pollution Control (Construction Dust) Regulation; EIAO-TM
|
|
6.3.2
|
|
Provision of wheel washes facilities for Site vehicles
leaving the Site.
|
KTCDA Site - Phase 1 Part 1
|
CEDD’s Contractor
|
|
ü
|
|
APCO (Cap. 311); Air
Pollution Control (Construction Dust) Regulation; EIAO-TM
|
|
6.3.2
|
|
Regular plant maintenance to minimise exhaust emission.
|
KTCDA Site - Phase 1 Part 1
|
CEDD’s Contractor
|
|
ü
|
|
APCO (Cap. 311); Air
Pollution Control (Construction Dust) Regulation; EIAO-TM
|
|
6.3.2
|
|
Sweep up dust and debris at the end of each shift.
|
KTCDA Site - Phase 1 Part 1
|
CEDD’s Contractor
|
|
ü
|
|
APCO (Cap. 311); Air
Pollution Control (Construction Dust) Regulation; EIAO-TM
|
|
|
2.9.1
|
Stockpiles of dusty waste
materials greater than 20m3 shall be enclosed on three sides, with
walls extending above the pile and 2 metres beyond the front of the pile.
|
KTCDA Site - Phase 1 Part 1
|
CEDD’s Contractor
|
|
ü
|
|
APCO (Cap. 311); Air
Pollution Control (Construction Dust) Regulation; EIAO-TM
|
|
|
2.9.1
|
Any vehicle with an open load
carrying area used for moving potentially dusty material shall have properly
fitting side and tail-boards.
Materials having the potential to create dust shall not be loaded to a
level higher than the side and tail boards and shall be covered by a clean
tarpaulin in good condition. The
tarpaulin shall be properly secured and shall extend at least 300m over the
edges of the side and tail-boards.
|
KTCDA Site - Phase 1 Part 1
|
CEDD’s Contractor
|
|
ü
|
|
APCO (Cap. 311); Air
Pollution Control (Construction Dust) Regulation; EIAO-TM
|
|
|
2.9.1
|
Effective water sprays shall be
used during the collection and loading of dusty wastes and other similar
materials, when dust is likely to be created and to dampen all stored
materials during dry and windy weather.
|
KTCDA Site - Phase 1 Part 1
|
CEDD’s Contractor
|
|
ü
|
|
APCO (Cap. 311); Air
Pollution Control (Construction Dust) Regulation; EIAO-TM
|
|
|
2.9.1
|
Areas within the KTCDA site where
there is a regular movement of vehicles, shall have an approved hard surface
and be kept clean of loose surface material.
|
KTCDA Site - Phase 1 Part 1
|
CEDD’s Contractor
|
|
ü
|
|
APCO (Cap. 311); Air
Pollution Control (Construction Dust) Regulation; EIAO-TM
|
|
|
2.9.1
|
Conveyor belts shall be fitted
with wind-boards, and conveyor transfer points and hopper discharge areas
shall be enclosed to minimize dust emission.
All conveyors carrying materials which have the potential to create
dust shall be totally enclosed and fitted with belt cleaners.
|
KTCDA Site - Phase 1 Part 1
|
CEDD’s Contractor
|
|
ü
|
|
APCO (Cap. 311); Air
Pollution Control (Construction Dust) Regulation; EIAO-TM
|
|
|
2.9.1
|
Adequate dust suppression plant
including water bowers with spray bars shall be provided.
|
KTCDA Site - Phase 1 Part 1
|
CEDD’s Contractor
|
|
ü
|
|
APCO (Cap. 311); Air
Pollution Control (Construction Dust) Regulation; EIAO-TM
|
|
Noise
|
|
5.8.1 & 5.8.2
|
|
Movable barriers as noise shields shall be considered for
deployment close to noisy equipment.
Where required, these should be made of panels with a superficial
surface density of at least 7 kg/m2.
|
KTCDA Site - Phase 1 Part 1
|
CEDD’s Contractor
|
|
ü
|
|
NCO
(Cap. 400); EIAO-TM; PN 2/93
|
|
5.8.2
|
3.8.3
|
Silenced and super silenced type equipment.
|
KTCDA Site - Phase 1 Part 1
|
CEDD’s Contractor
|
|
ü
|
|
NCO
(Cap. 400); EIAO-TM; PN 2/93
|
|
5.8.2
|
|
Reduction in number of plant operating simultaneously.
|
KTCDA Site - Phase 1 Part 1
|
CEDD’s Contractor
|
|
ü
|
|
NCO
(Cap. 400); EIAO-TM; PN 2/93
|
|
5.8.2
|
|
Use of modified site hoarding to a perimeter noise barrier
as a noise shield.
|
KTCDA Site - Phase 1 Part 1
|
CEDD’s Contractor
|
|
ü
|
|
NCO
(Cap. 400); EIAO-TM; PN 2/93
|
|
5.8.2
|
|
Re-scheduling and restricting hours of operation of noisy
tasks.
|
KTCDA Site - Phase 1 Part 1
|
CEDD’s Contractor
|
|
ü
|
|
NCO
(Cap. 400); EIAO-TM; PN 2/93
|
|
Water Quality
|
|
|
4.3.2
|
Use of sediment traps, where appropriate.
|
KTCDA Site - Phase 1 Part 1
|
CEDD’s Contractor
|
|
ü
|
|
PN 1/94, WPCO (Cap. 358)
|
|
|
4.3.2
|
Adequate maintenance of drainage
systems to prevent flooding and overflow.
|
KTCDA Site - Phase 1 Part 1
|
CEDD’s Contractor
|
|
ü
|
|
PN 1/94, WPCO (Cap. 358)
|
|
|
4.3.3
|
Provision of temporary channels
to facilitate run-off discharge into the appropriate watercourses, via a silt
retention pond, and permanent drainage channels to incorporate sediment
basins or traps and baffles to enhance deposition rates.
|
KTCDA Site - Phase 1 Part 1
|
CEDD’s Contractor
|
|
ü
|
|
PN 1/94, WPCO (Cap. 358)
|
|
|
4.3.4
|
Provision of temporary and
permanent drainage pipes and culverts to facilitate run-off discharge and
shall be adequately designed for the controlled release of storm flows.
|
KTCDA Site - Phase 1 Part 1
|
CEDD’s Contractor
|
|
ü
|
|
PN 1/94, WPCO (Cap. 358)
|
|
|
4.3.4
|
Regular cleaning and maintenance
of all sediment traps.
|
KTCDA Site - Phase 1 Part 1
|
CEDD’s Contractor
|
|
ü
|
|
PN 1/94, WPCO (Cap. 358)
|
|
|
4.3.4
|
When construction works has
finished or the temporary diversion is no longer required, temporarily
diverted drainage shall be reinstated to its original condition.
|
KTCDA Site - Phase 1 Part 1
|
CEDD’s Contractor
|
|
ü
|
|
PN 1/94, WPCO (Cap. 358)
|
|
|
4.3.5
|
Installation of wheel washing
facilities to ensure no earth, mud and debris is deposited on roads. Sand and silt in the wash water from such
facilities shall be settled out and removed prior to discharge of the used
water into storm drains. A section of
the road between the wheel washing bay and the public road shall be paved
with backfill to prevent wash water or other site run-off from entering the
public road drains.
|
KTCDA Site - Phase 1 Part 1
|
CEDD’s Contractor
|
|
ü
|
|
PN 1/94, WPCO (Cap. 358)
|
|
|
4.3.6
|
Provision of oil interception
facilities in appropriate areas in the drainage system, where oil spills may
occur, and regularly emptied to prevent the release of oil and grease into
the storm water drainage system after accidental spillage.
|
KTCDA Site - Phase 1 Part 1
|
CEDD’s Contractor
|
|
ü
|
|
PN 1/94, WPCO (Cap. 358)
|
|
|
4.3.9
|
Debris and rubbish on site should be collected, handled and
disposed or properly to prevent such material from entering the water column
and causing water quality impacts.
|
KTCDA Site - Phase 1 Part 1
|
CEDD’s Contractor
|
|
ü
|
|
PN 1/94, WPCO (Cap. 358)
|
|
|
4.3.10
|
Fuel storage areas should be provided with locks and be
sited on sealed areas if required, within bunds of a capacity equal to 110%
of the storage capacity of the largest container (to provide a safety margin)
and control spilt fuel oils.
|
KTCDA Site - Phase 1 Part 1
|
CEDD’s Contractor
|
|
ü
|
|
|
|
Waste Management –
General
|
|
7.11.2
|
5.2.33
|
The Waste Management Plan shall be prepared in accordance
with WBTC No. 29/2000 (superseded by ETWB TC(W) No. 15/2003) and shall
provide details of the measures and procedures considered necessary to
control and manage the storage, transportation and disposal of all wastes
generated during the demolition.
|
KTCDA Site - Phase 1 Part 1
|
CEDD’s Contractor
|
ü
|
ü
|
|
ETWB TC(W) No. 15/2003
|
|
7.10.30
|
5.2.37
|
Wastes should be handled and stored in a manner which
ensures that they are held securely without loss or leakage thereby
minimising the potential for pollution.
|
KTCDA Site - Phase 1 Part 1
|
CEDD’s Contractor
|
|
ü
|
|
|
|
7.10.30
|
5.2.37
|
Only reputable waste collectors authorised to collect the
specific category of waste concerned should be employed.
|
KTCDA Site - Phase 1 Part 1
|
CEDD’s Contractor
|
|
ü
|
|
|
|
7.10.30
|
5.2.37
|
Appropriate measures should be employed to minimise
windblown litter and dust during transportation by either covering trucks or transporting
wastes in enclosed containers.
|
KTCDA Site - Phase 1 Part 1
|
CEDD’s Contractor
|
|
ü
|
|
|
|
7.10.30
|
5.2.37
|
The necessary waste disposal permits should be obtained from
the appropriate authorities, if they are required, in accordance with the
Waste Disposal Ordinance (Cap 354), Waste Disposal (Chemical Waste) (General)
Regulation (Cap 354) and Government Land Ordinance (Cap 28).
|
KTCDA Site - Phase 1 Part 1
|
CEDD’s Contractor
|
|
ü
|
|
Waste Disposal Ordinance (Cap 354), Waste Disposal (Chemical
Waste) (General) Regulation (Cap 354), Government Land
Ordinance (Cap 28).
|
|
7.10.30
|
5.2.37
|
Collection of general refuse should be carried out
frequently, preferably daily.
|
KTCDA Site - Phase 1 Part 1
|
CEDD’s Contractor
|
|
ü
|
|
|
|
7.10.30
|
5.2.37
|
Waste should only be disposed of at licensed sites and site
staff and the civil engineering Contractor should develop procedures to
ensure that illegal disposal of wastes does not occur.
|
KTCDA Site - Phase 1 Part 1
|
CEDD’s Contractor
|
|
ü
|
|
|
|
7.10.30
|
5.2.37
|
Waste storage areas should be well maintained and cleaned
regularly.
|
KTCDA Site - Phase 1 Part 1
|
CEDD’s Contractor
|
|
ü
|
|
|
|
7.10.30
|
5.2.37
|
Records should be maintained of the quantities of wastes
generated, recycled and disposed, determined by weighing each load.
|
KTCDA Site - Phase 1 Part 1
|
CEDD’s Contractor
|
|
ü
|
|
|
|
Waste Management -
General Refuse
|
|
7.10.20
|
5.2.27
|
Office wastes can be reduced through the policies for re-use
of paper in printers and copiers for draft documents.
|
KTCDA Site - Phase 1 Part 1
|
CEDD’s Contractor
|
|
ü
|
|
|
|
|
|
The policies of recycling e.g. paper and toners or
cartridges if volumes are large enough to warrant collection,
should be encouraged with participation in a local collection scheme if one
is available.
|
KTCDA Site - Phase 1 Part 1
|
CEDD’s Contractor
|
|
ü
|
|
|
|
|
|
In order to reduce waste, the number of photocopies shall be
reduced to a minimum while internal documents and external documents shall be
copied on both sides of paper where appropriate. Recycling bins for paper and toners will be
provided in site office to facilitate the recycling of paper.
|
KTCDA Site - Phase 1 Part 1
|
CEDD’s Contractor
|
|
ü
|
|
|
|
7.10.19
|
5.2.26
|
General refuse is generated largely by food service
activities on site, so reusable rather than disposable dishware should be
used if feasible. Aluminium cans are
often recovered from the waste stream by individual collectors if they are
segregated or easily accessible, so separate, labelled bins for their deposit
should be provided if feasible.
|
KTCDA Site - Phase 1 Part 1
|
CEDD’s Contractor
|
|
ü
|
|
|
|
|
|
Putrescible wastes, such as lunch box, and
domestic wastes generated on-site shall be stored in enclosed bins or
compaction units separate from C&D and chemical wastes. Waste paper will be stored in containers
clearly marked as recyclable or waste.
|
KTCDA Site - Phase 1 Part 1
|
CEDD’s Contractor
|
|
ü
|
|
Public Health and Municipal
Services Ordinance (Cap. 132)
|
|
7.10.18
|
5.2.25
|
A reputable waste collector should be employed by the
Contractor to remove general refuse, separately from C&D material and
chemical wastes, preferably daily to minimise odour, pest and litter
impacts. The burning of refuse on
construction sites is prohibited by law.
|
KTCDA Site - Phase 1 Part 1
|
CEDD’s Contractor
|
|
ü
|
|
Public Health and Municipal
Services Ordinance (Cap. 132), Air Pollution Control (Open
Burning) Regulation
|
|
|
|
Waste disposal records shall be obtained from the
appropriate authorities and collection of general refuse and general site
housekeeping should be carried out.
|
KTCDA Site - Phase 1 Part 1
|
CEDD’s Contractor
|
|
ü
|
|
Waste Disposal Ordinance (Cap. 354); Waste Disposal (Chemical Waste) (General) Regulation (Cap.
354); Government Land (Miscellaneous Provisions) Ordinance
(Cap. 28).
|
|
Waste Management -
C&D Materials
|
|
7.10.7
|
5.2.7
|
The Contractor should recycle C&D material on-site as
far as possible. Planning, careful
design and good site management of the demolition process can minimise over
ordering and avoidable waste. Areas
within the Site areas can be segregated for the separation and storage. Proper segregation of wastes on Site will
increase the feasibility of utilising recycling contractors to recycle
certain components of the waste stream.
Concrete and masonry can be crushed and used as fill to level the Site
after demolition. However there will
be little or no excavation of any underground structures therefore the
majority of inert waste will need to be delivered to public filling
areas. Steel reinforcing bars can be
re-used by scrap steel mills.
|
KTCDA Site - Phase 1 Part 1
|
CEDD’s Contractor
|
ü
|
ü
|
|
ETWB
TC(PS) No. 25/99, 12/2000;
ETWB
TC(W) No. 15/2003
|
|
|
|
“Selective Demolition” involves demolition and removal of
wastes of the same category one at a time.
In general, domestic wastes such as furniture, household appliances;
metal components such as window frames, pipes; timber components such as
doors, wooden floors; and other wastes such as tiles, asphalt materials,
ceramic products should be removed first.
The building demolition shall begin after all the above non-structural
materials have been stripped and removed.
To avoid mixing the non-recyclable bricks with the broken concrete,
the demolition sequence should be planned in such a way that brick walls are
demolished first and stockpiled separately before the demolition of
structural members.
|
KTCDA Site - Phase 1 Part 1
|
CEDD’s Contractor
|
|
ü
|
|
|
|
|
|
All C&D materials arising from the demolition work shall
be sorted on-site and separated into different groups for off-site disposal
at landfills, public filling areas, in filling areas provided by the
Contractor, or recycling at the C&D waste recycling facilities as
appropriate. All fill to be disposed
of at public filling areas have to be sorted and broken down to meet the
requirements of the Dumping Licence conditions.
|
KTCDA Site - Phase 1 Part 1
|
CEDD’s Contractor
|
|
ü
|
|
ETWB TC(PS) No. 12/2000
|
|
|
|
Designated areas for segregation and temporary storage of
reusable and recyclable materials should be identified in the Waste
Management Plan to be prepared by the Contractor. The Contractor should recycle as much of
the C&D material as possible on site.
Different areas of the work site should be designated for such
segregation and storage wherever site conditions permit.
|
KTCDA Site - Phase 1 Part 1
|
CEDD’s Contractor
|
|
ü
|
|
|
|
|
|
C&D material should be removed from site as soon as
practicable to avoid adverse environmental impacts due to on-site storage of
the material. It should be
sorted/separated at the construction site as far as practicable into two main
types: inert (including soil, rock, concrete, brick, aggregates and asphalt)
and non-inert (wood, paper, general garbage and other inorganic). Recyclable C&D materials such as broken
concrete and rock should be further sorted out from the inert portion and be
delivered to recycling facilities as designated by the Engineer’s
Representative for processing into recycled aggregates for use in
construction. The non-recyclable inert
portion can be used as public fill for dumping in public filling areas whilst
the non-inert portion is classified as C&D waste which will require to be
disposed of at the WENT Landfill Site or other areas as designated by EPD.
|
KTCDA Site - Phase 1 Part 1
|
CEDD’s Contractor
|
|
ü
|
|
|
|
|
|
The Environment, Transport and Works Bureau Technical
Circular (Works) No. 31/2004 – Trip Ticket System for Disposal of
Construction & Demolition Materials promulgates the amended trip ticket
system (TTS) for public works contracts including capital works contracts,
where C&D materials including waste generated on site require
disposal.
|
KTCDA Site - Phase 1 Part 1
|
CEDD’s Contractor
|
|
ü
|
|
ETWB TC(W) No. 31/2004
|
|
Waste Management - Chemical Waste
|
|
7.10.10
|
5.2.10
|
For those processes that generate chemical waste, it may be
possible to find alternatives which generate reduced quantities or even no
chemical waste, or less dangerous types of chemical waste.
|
KTCDA Site - Phase 1 Part 1
|
CEDD’s Contractor
|
|
ü
|
|
|
|
7.10.11
|
5.2.11
|
Chemical waste that is produced, as defined under Section 3
of the Waste Disposal (Chemical Waste) (General) Regulation, should be
handled in accordance with the Code of Practice on the Packaging, Labelling
and Storage of Chemical Wastes.
|
KTCDA Site - Phase 1 Part 1
|
CEDD’s Contractor
|
|
ü
|
|
Waste Disposal (Chemical Waste) (General) Regulation
|
|
7.10.12
|
5.2.12
|
Containers used for the storage of chemical wastes should:
a) Be suitable for the substance they are holding, resistant
to corrosion, maintained in a good condition, and securely closed;
b) Have a capacity of less than 450 l unless the
specifications have been approved by the EPD; and;
c) Display a label in English and Chinese in accordance with
instructions prescribed in Schedule 2 of the Regulations.
|
KTCDA Site - Phase 1 Part 1
|
CEDD’s Contractor
|
|
ü
|
|
|
|
7.10.13
|
5.2.13
|
The storage area for chemical wastes should:
a) Be clearly labelled and used solely for the storage of
chemical waste;
b) Be enclosed on at least 3 sides;
c) Have an impermeable floor and bunding, of capacity to
accommodate 100% of the volume of the largest container or 20% by volume of
the chemical waste stored in that area, whichever is the greatest;
d) Have adequate ventilation;
e) Be covered to prevent rainfall entering (water collected
within the bund must be tested and disposed as chemical waste if necessary);
and
f) Be arranged so that incompatible materials are adequately
separated.
|
KTCDA Site - Phase 1 Part 1
|
CEDD’s Contractor
|
|
ü
|
|
|
|
7.10.14
|
5.2.14
|
Disposal of chemical waste should:
a) Be via a licensed waste collector; and
b) Be to a facility licensed to receive chemical waste, such
as CWTC, which also offers a chemical waste collection service and can supply
the necessary storage containers; or
c) Be to a recycling or reprocessing facility licensed by
EPD.
|
KTCDA Site - Phase 1 Part 1
|
CEDD’s Contractor
|
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ü
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7.10.16
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5.2.15
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Asbestos waste that is produced should be handled in
accordance with the Code of Practice on the Handling, Transportation and
Disposal of Asbestos Wastes. Detailed
requirements have been presented in the Asbestos Study Report.
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KTCDA Site - Phase 1 Part 1
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CEDD’s Contractor
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ü
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Type 1 asbestos wastes (bonded asbestos wastes (other than
blue or brown asbestos) in good condition) shall be packed with 2 individual
layers of strong transparent plastic sheets of not less than 0.15 mm
thickness and completely sealed with adhesive tapes. Type 1 waste shall be packed in suitable
sizes for easy handling. The height of each package shall not exceed 750 mm.
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KTCDA Site - Phase 1 Part 1
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CEDD’s Contractor
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ü
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Type 2 asbestos wastes (any waste containing loose asbestos
fibres (other than blue or brown asbestos)) must be contained, as soon as it
is produced, in strong bags made from plastic or other containers approved by
EPD. The bags should be goose-neck
sealed by means of adhesive tapes. A
bag filled with asbestos waste should be placed inside another plastic bag to
provide additional protection. The
colour of the inner bag should be white while the outer bag should be
transparent to facilitate visual inspection.
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KTCDA Site - Phase 1 Part 1
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CEDD’s Contractor
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ü
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The handling of Type 3 asbestos wastes (all blue asbestos
(crocidolite) and brown asbestos (amosite), whether in good condition or not,
or any articles contaminated by blue or brown asbestos) should be similar to
that of Type 2 except that the colour of the inner bags should be orange.
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KTCDA Site - Phase 1 Part 1
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CEDD’s Contractor
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ü
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All storage of asbestos waste should be carried out properly
in a secure place isolated from other substances so as to prevent any
possible release of asbestos fibres into the atmosphere and contamination of
other substances. Type 1 asbestos
waste should not be stored together with Types 2 and 3 asbestos wastes so as
to avoid damage to the plastic bags of Type 2 or 3 asbestos waste, unless the
bags are packed in boxes or drums for additional protection. Bagged asbestos
waste should not be stacked more than 3 bags high in order to avoid damage to
the bottom bag. The storage area
should be isolated from other working areas and bear warning panels to alert
people of the presence of asbestos waste.
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KTCDA Site - Phase 1 Part 1
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CEDD’s Contractor
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ü
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Disposal of asbestos wastes shall not commence before a
designated notification has been given to EPD and confirmed. Before being transported for disposal, all
the asbestos waste produced should be stored in a temporary storage area.
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KTCDA Site - Phase 1 Part 1
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CEDD’s Contractor
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ü
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Section 7 of the Code
of Practice on the Handling, Transportation and Disposal of Asbestos Waste.
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All asbestos wastes for disposal should be transported by an
asbestos waste collector licensed by EPD and in a designated vehicle equipped
as stated in the Code of Practice.
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KTCDA Site - Phase 1 Part 1
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CEDD’s Contractor
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ü
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The ash/rubble in between the Chimneys A and B on-site shall
be treated by solidification / stabilisation with cement, and the treated ash
shall be sealed into steel drums lined with plastic sheeting prior to
disposal at designated areas in the landfill.
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KTCDA Site - Phase 1 Part 1
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CEDD’s Contractor
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ü
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The proposed disposal method for ash waste is to be
collected up and stabilised to meet landfill disposal criteria of EPD. In such case, it is envisaged that the
process would involve collection and mixing the ash material with
cement. Pilot mixing and TCLP tests
would establish the ratio of cement to ash to the satisfaction of EPD. The materials for disposal would then be
treated and the extracted material placed into polythene lined steel
drums. Transparent plastic sheeting of
0.15mm thickness low-density polythene or PVC should be employed. The drums should be 16 gauge
steel or thicker and fitted with double bung fixed ends adequately sealed and
well labelled in new or good condition.
Prior agreement of the disposal criteria from EPD and agreement to
disposal from the landfill operator must be obtained.
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KTCDA Site - Phase 1 Part 1
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CEDD’s Contractor
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ü
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The release of contaminants from disturbed ash should be
minimised prior to gathering up the ash materials and amended water
containing a wetting agent should be sprayed on the ash. The wetting agent will assist in water penetration
to thoroughly soak the ash and ensure dust levels are reduced without using
excessive water. (Spray shall comprise
50% polyoxyethylene ester and 50% polyoxyethylene ether, or equivalent,
diluted to specific concentration in accordance with the manufacturer’s
instructions). The use of amended
water for dust suppression will minimise the use of excessive water that
would result in surface runoff in the removal process. Dust suppression can be carried out in a
controlled manner and no insurmountable environmental problem would result.
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KTCDA Site - Phase 1 Part 1
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CEDD’s Contractor
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ü
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Where the level of dioxin contaminants exceeded the USEPA
criterion of 1ppb (parts per billion) by weight, the remediation strategies
for contaminated material are recommended as follows:
a) Ash/rubble waste shall be collected up and stabilised /
solidified to meet landfill disposal criteria of EPD, 1 part per billion
(1ppb TEQ) TCLP;
b) It is envisaged that the process would involve collection
and mixing the ash/rubble material with cement followed by sealing in
polythene lined steel drums;
c) Pilot mixing of the ash with progressively greater
proportions of cement would precede the treatment; and
d) The stabilised / solidified DCM that is contained in
polythene lined steel drums shall be transported for landfill disposal.
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KTCDA Site - Phase 1 Part 1
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CEDD’s Contractor
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ü
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The chimney interior shall be brushed clean. The brushed out materials including ash and
dust shall be sealed in steel drums before disposal at the CWTC. Subsequently the internal brick lining
shall be scrabbled and HEPA vacuumed to thoroughly remove the ash
attached. The clean bricks shall then
be dismantled from top to bottom and placed inside steel drums before
disposal at the landfill.
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KTCDA Site - Phase 1 Part 1
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CEDD’s Contractor
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ü
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Proper decontamination facilities similar to that employed
in asbestos removal works (i.e. 3-chamber decontamination units) shall be
adopted. Workers shall be protected with disposable coveralls and appropriate
respirators suitable for protection against asbestos fibre and dioxin, as
well as to fulfil confined space requirements.
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KTCDA Site - Phase 1 Part 1
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CEDD’s Contractor
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ü
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The flue sections shall either be thoroughly cleaned with
high efficiency vacuum and wet cloth to remove all dioxin-contaminated ash,
or the dismantled sections, considered as chemical wastes, wrapped with
impermeable polythene sheets for proper disposal to landfill following the
requirements of the Waste Disposal
(Chemical Waste) (General) Regulation.
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KTCDA Site - Phase 1 Part 1
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CEDD’s Contractor
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ü
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Waste Disposal (Chemical Waste)
(General) Regulation.
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The required decontamination shall be conducted under
negative pressure with all openings and uncontaminated areas sealed with
impermeable plastics. This requirement
is analogous to the ‘full containment’ requirements for asbestos removal
works. The chimney flues should be
taken down in manageable sections within the containment, and any ash
deposits scrapped off and sealed in drums for disposal to landfill site.
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KTCDA Site - Phase 1 Part 1
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CEDD’s Contractor
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ü
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The flue sections shall either be cleaned with high
efficiency vacuum and wet cloth, or wrapped with impermeable plastics for
disposal to landfill site. The flues
will be removed from top down and hence the ACM will be removed when the
removal of chimney flue sections has proceeded down to the levels where the
ACM is located.
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KTCDA Site - Phase 1 Part 1
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CEDD’s Contractor
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ü
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Given the nature of the work and the contaminants involved
consideration should be given to the use of decontamination facilities
(showers) that should be provided for the workforce to remove contamination
after work.
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KTCDA Site - Phase 1 Part 1
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CEDD’s Contractor
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ü
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7.10.21
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5.2.28
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Different types of waste should be segregated and stored in
different containers, skips or stockpiles to enhance reuse or recycling of
materials and their proper disposal.
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KTCDA Site - Phase 1 Part 1
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CEDD’s Contractor
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ü
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7.10.22
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5.2.39
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An on-site temporary storage area should also be provided.
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KTCDA Site - Phase 1 Part 1
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CEDD’s Contractor
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ü
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7.10.25
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5.2.32
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A recording system for the amount of wastes generated,
recycled and disposed (including the disposal sites) should be proposed.
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KTCDA Site - Phase 1 Part 1
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CEDD’s Contractor
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ü
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ETWB TC(W) No. 15/2003
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Table C‑5 Event Contingency Plan for Environmental Complaints
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Step
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Day
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Action
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Contractor
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ER
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ET
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IEC
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1
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1
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Party receiving complaint
shall create a new complaint record. If the Contractor receives a complaint,
he shall pass the information to the ER.
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¨
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¨
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¨
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2
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1
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ER to ensure details of
complaint provided to Contractor (if complaint not originally received by the
Contractor), ET and IEC
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¨
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3
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2
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Within 1 working day after
the receipt of the Notification of Complaint, provide ER relevant works site
information, e.g. types and locations of construction works.
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¨
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à
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4
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2
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Investigate the complaint to
determine its validity, and to assess whether the source of the problem is
due to the works activities. Report
the validity of the complaint to ER.
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¨à
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5
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2
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If complaint is valid and
due to works, ER shall notify the Contractor.
If complaint is invalid or not due to works, Go to Step 12.
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¨
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6
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2
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Propose mitigation measures
to ER within 1 working day of the receipt of the Notification.
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¨
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à
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7
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2
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Review and agree with the
proposed mitigation measures and make recommendations where necessary.
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¨à
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¨à
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8
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2
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Implement the mitigation
measures once they have been agreed.
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¨
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9
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4
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Audit the implementation of
the proposed mitigation measures on site within 2 working days after measures
have been agreed.
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¨à
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¨à
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10
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-
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Undertake additional
monitoring to verify the situation where necessary.
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¨
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11
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4
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Report the investigation
results and subsequent actions taken to ER within 2 working days after the
implementation of mitigation measures.
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¨
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¨
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12
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5
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Respond to the complainant
within 1 working day after receiving the investigation report.
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¨
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13
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25
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If no further comments or
complaints are received from the complainant within 20 working days after
responding to the complainant, close the complaint record. If the complainant has further comments or
complaints on the same issue, notify other parties on the same day and go to
step 2.
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¨
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¨à
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¨ Action Party
à Enter comments/ proposals into
appropriate complaint record where applicable
Appendix E Air Quality Monitoring
Results and Graphical Presentation
Appendix F Noise Monitoring Results and
Graphical Presentation
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