Civil Engineering and Development
Department
Land Works Division
2/F, Civil Engineering and
Homantin,
Demolition of Buildings and Structures in the Proposed
Environmental Permit No.
EP-136/2002/B
Monthly EM&A Report for Aug 2008
(Phase 1 Part 1) Rev A
Report No.: 203204/EM&A/11/A
September 08
Mott
Connell Limited
7/F,
Tsim Sha
Tsui,
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.
Pursuant to Condition 1.10, 2.3 and 3.5 of
the Environmental Permit
EP-136/2002/B
This Monthly EM&A Report (Aug 2008) for
Phase 1 Part 1
has been reviewed, certified and verified by
the following EM&A members
Certified by:
Joseph
Chan
Environmental
Team (ET) Leader
Mott
Connell Ltd.
Date 12
September 2008
Verified by:
Independent
Environmental Checker (IEC)
Hyder
Consulting Limited
Date 12
September 2008
List of Contents Page
EXECUTIVE
SUMMARY iv
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 during 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..................................................................................... 3-4
3.5 Results of Impact Monitoring........................................................................... 3-4
4. Project Environmental Status 4-4
4.1 Environmental Meetings.................................................................................. 4-4
4.2 Status of Environmental Submissions, Permits and
Licenses.............................. 4-4
4.3 Waste Management Status.............................................................................. 4-4
4.4 Review of Environmental Monitoring Procedures.............................................. 4-4
4.5 Implementation Status of Environmental Mitigation
Measures............................ 4-4
5. Audit Findings 5-4
5.1 Site Environmental Audit................................................................................. 5-4
5.2 Condition of Identified Surface Cracks............................................................. 5-4
5.3 Site Effluent Discharge/WPCO Effluent Discharge.......................................... 5-4
6. Environmental COMPLAINTS AND NON-COMPLIANCE 6-4
6.1 Summary of Environmental Complaints, Notifications
of Summons and Successful Prosecutions 6-4
6.2 Environmental Enquires................................................................................... 6-4
6.3 Environmental Events..................................................................................... 6-4
6.4 Environmental Exceedance/ Non-compliance................................................... 6-4
7. future key issues 7-4
7.1 Key Issues and Recommendations for Coming Month....................................... 7-4
8. conclusion and recommendation 8-4
8.1 Conclusions.................................................................................................... 8-4
8.2 Recommendations.......................................................................................... 8-4
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.......... Airborne
Fibre Monitoring Results
Appendix G.......... Noise
Monitoring Results and Graphical Presentation
Appendix I........... Calibration
Certificates
Appendix J........... Works
Programme
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............ Airborne Fibre Monitoring Equipment.......................................................... 3-4
Table 3‑3............ Noise Monitoring Equipment........................................................................ 3-4
Table 3‑4............ Equipment Calibration Frequencies............................................................ 3-4
Table 3‑5............ Results of 1-Hour TSP Impact Monitoring................................................... 3-4
Table 3‑6............ Results of 24-Hour TSP Impact Monitoring................................................. 3-4
Table 3‑7............ Result of Noise Monitoring........................................................................... 3-4
Table 3‑8............ Monthly Summary Waste Flow Table for 2008........................................... 3-4
Table 4‑1............ Status of Environmental Submissions, Permits and Licenses.................. 4-4
Table 5‑1............ Summary of Environmental Site Inspections.............................................. 5-4
Table 6‑1............ Summary of Environmental Complaints and Prosecutions........................ 6-4
Table 6‑2............ Summary of Exceedances.......................................................................... 6-4
Table B‑1............ Event/Action Plan for Air Quality................................................................. B-4
Table B‑2............ Event/Action Plan for Noise Impact............................................................ B-4
Table C‑3........... Implementation Schedule of Recommended Mitigation Measures............ C-4
Table C-4........... Implementation Schedule of Recommended Mitigation Measures............ C-4
Table C‑5........... Event Contingency Plan for Environmental Complaints............................ C-4
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
Figure 4.1........... Location of DCM Removal Works
Figure 5.1........... Drainage Plan
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 Aug 2008.
This is the 11th
Monthly EM&A Report for works carried out during the reporting month of Aug
2008.
The following construction activities have
taken place during the reporting month: -
· Outstanding hoarding works;
· Erection of bamboo scaffolding
around the Lairage Block, Lairage Entrance Unit and the
· Erection of propping systems at the
Lairage Block, Lairage Entrance Unit and the
· Erection of protective screens at
the Lairage Block, Lairage Entrance Unit and the
· Demolition works at the
Slaughterhouse Block, Refrigeration Block and the
· Removal and treatment of soil
contaminated with dioxin at the rubble area.
During the reporting month removal works for
dioxin/furan contaminated materials (“DCM”) have continued. Meanwhile, removal
works for asbestos containing materials (“ACM”) within the Abattoir and
Incineration Plant were completed on 31 July 2008.
Throughout the reporting month, demolition
works and scaffolding erection works took place, and air quality and noise
monitoring continued. In addition, airborne fibre impact monitoring was carried
out on completion of asbestos abatement works. Furthermore, dioxin abatement
works continued, and during the course of these works dioxin impact monitoring
was carried out.
No environmental complaints, notifications of
summons and prosecutions were 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 7, 13, 18 and 27 August 2008.
No non-compliance with regard to
environmental legislation was recorded in this reporting month.
Repairing of the documented cracked/damaged existing concrete ground
slab was conducted and completed in January 2008 following the site inspection
by EPD on 17 Dec 2007. A set of photo records of the completed repair works has
been presented in Appendix G of EM&A report for Feb 2008.
Future key activities envisaged in the coming
month include: -
· Impact monitoring for dioxin;
· Off-site disposal of asbestos
containing material (ACM);
· Dioxin containing material (DCM)
removal works;
· Dioxin removal works;
· Preparation of demolition works; and
· Demolition works.
A tentative program for works activities is
given in Appendix
J.
1.1.2
This Contract [No.: CV/2007/05] for Phase 1 Part 1
of the Project was awarded to the Contractor - Hang Kee Construction &
Engineering Co. Ltd. and contractually commenced on 28 September 2007.
The main Contract will last for 18 months. In accordance with
Condition 1.12 of the Environmental Permit EP-136/2002/B, the Director of
Environmental Protection (“DEP”) was notified that the commencement date of
Phase 1 Part 1 of the Project was 12 October 2007 within the context of the
Environmental Permit.
1.1.3
The scope of Phase 1 Part 1 of the Project includes
demolition and clearance of all existing chimneys, buildings and ancillary
structures above the existing concrete ground slab where the former Kennedy
Town Incinerator Plant (“KTIP”) and the Kennedy Town Abattoir (“KTA”) are
located, and the demolition and clearance of existing piers at the waterfront
adjacent to the KTIP and KTA. It also includes the removal of asbestos
containing materials (“ACM”) and dioxin/ furan contaminated materials (“DCM”)
prior to demolition of structures and final capping of the underground
facilities with clean soil and concrete cover of not less than 130mm thick as
required in EP Condition 2.5(e).
1.1.4
A layout plan of the Project site and locations for
nearby sensitive receivers is given in Figure
1.1.
1.1.5
Mott Connell Limited (MCL) has been commissioned by
the Project Proponent – Civil Engineering and Development Department (“CEDD”)
as the Environmental Team (“ET”) to undertake the Environmental Monitoring and
Audit (EM&A) programme described in the approved EM&A Manual and the
subsequent Updated EM&A Manual for Phase 1 Part 1 of the Project.
1.2
Coverage of this EM&A Report
1.2.1
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 Aug 2008.
1.2.2
This is the 11th
Monthly EM&A Report for works carried out on-site during the reporting
month.
1.3
Project Management Organisation
1.3.1
The project organisation chart is presented in Figure 1.2.
1.5
Works Undertaken during the Reporting Month
1.5.1
The following construction activities have taken
place during the reporting month: -
· Outstanding hoarding works;
· Erection of bamboo scaffolding
around the Lairage Block, Lairage Entrance Unit and the
· Erection of propping systems at the
Lairage Block, Lairage Entrance Unit and the
· Erection of protective screens at
the Lairage Block, Lairage Entrance Unit and the
· Demolition works at the
Slaughterhouse Block, Refrigeration Block and the
· Removal and treatment of soil
contaminated with dioxin at the rubble area.
1.5.2
During the reporting month, removal works for
dioxin/ furan contaminated materials (“DCM”) have continued. Meanwhile, removal
works for asbestos containing materials (“ACM”) within the KTA and KTIP were
completed on 31 July 2008.
Figure 1.1 Layout Plan of Work Site
and Neighbouring Sensitive Receivers
Figure 1.2 Project Organisation Chart
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 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
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 Fibre |
3
Locations – AF1, AF2 and AF3 |
Daily |
During
asbestos abatement works |
|
Noise |
Leq (30 min), L10, L90 |
3 Locations – N1,
N2 & N3 |
Once
per week |
During
Construction |
Waste |
On-Site Waste Audit |
Active work site
locations |
Weekly |
During
Construction |
Wastewater |
On-Site audit of surface runoff and trade effluent disposal |
Active work site
locations and final discharge point |
Weekly |
During
Construction |
General
Site Conditions |
Environmental Site
Inspection |
Works areas and
areas affected by works |
Weekly |
During
Construction |
2.2
Environmental Quality Performance Limits
2.2.1
Environmental Quality Performance Limits for air
quality (dust and airborne fibre) and noise are shown in Appendix A.
2.3.1
The Event/ Action Plans for air quality and noise
are shown in Appendix
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 is to be inspected and reviewed.
A schedule of the implementation of mitigation measures identified at
the EIA stage is given in Appendix 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 7, 13,
18 and 27 August 2008 in this reporting month to assess the compliance with
environmental requirements. The EM&A schedule is given in Appendix D.
3.1.2
During this reporting month, bamboo scaffolding
erection works and demolition works took place, and air quality and noise
monitoring continued. In addition, abatement works for asbestos and dioxin
continued, and during the course of these respective works airborne fibre and
dioxin monitoring was carried out.
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
·
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 Fibre Monitoring
3.2.3
All airborne sampling procedures and specification
shall comply with EH10 guidance note and MDHS 39/3 (HSE
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.
Field Monitoring
·
The
sampler was calibrated by way of a filter holder completed with 0.8 micron pore
size membrane filter in series with a calibrated rotameter.
·
The
sampler was switched on with the screw adjusted until it reached a flow rate of
4 litre/min as shown on the calibrated rotameter within ±5%.
·
The
starting flow rate was recorded on worksheet.
·
The
height of the filter holder must be within 1-2 m above ground.
·
The
following steps were performed at the beginning of next hour’s sampling:
-
Calibrate
the sampler again after an hour to check if the flow rate is within ±10% of 4 litres/min. (Note: No
adjustment should be made to the pump flow rate.)
-
Discard
the sample if the flow rate is outside ±10%.
·
Sampling
volume must be at least 480 litres.
·
The
sampler was calibrated on completion of the sampling period with the finish
flow rate recorded on worksheet.
·
The
sample should be discarded if the flow rate is outside ±10%.
·
Use
test ware or clean plastic cover to cover the cowl entrance.
·
Use
egg-crate box to carry the filter holder back to the laboratory, the filter
head should face upward.
Analysis
·
Membrane
filter samples were analysed using method based on MDHS 39/3, “Asbestos fibres
in air”.
Maintenance and Calibration
·
Float
and float tube cleaned in ultrasonic bath with DI water for 10 minutes.
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:
-
Frequency
weighting: A
-
Time
weighting: Fast
-
Time
measurement:
§
1
no. of Leq (30 min) noise measurements between 07:00 & 19:00 hours on
normal weekdays at each monitoring station on a per week basis;
§
3
nos. of consecutive Leq (5 min) noise measurements between 07:00 & 19:00
hours on general holidays or Sundays at each monitoring station on a per week
basis (if work is undertaken on these days).
·
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
1.0 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.
Air Quality (Dust)
3.3.1
The equipment used for air quality (dust)
monitoring is listed in Table 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 Fibre)
3.3.2
The equipment used for airborne fibre impact
monitoring is listed in Table 3‑2.
Table 3‑2 Airborne
Fibre Monitoring Equipment
Equipment |
Model |
Sampler Pump |
Casella
AFC 123, SKC 224-43XR & 224-44XR, and Casella vortex |
Rotameter (Portable Flowmeter) |
KDG Type 1100 |
Calibrator |
SKC Electronic Calibrator Model 712 |
Noise
3.3.3
The equipment used for noise monitoring is listed
in Table
3‑3.
Table 3‑3 Noise
Monitoring Equipment
Equipment |
Model |
Integrating Sound Level Meter |
Rion NL-31 |
Calibrator |
Rion NC-73 |
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 |
21
Aug 2008 |
1-hour TSP Dust
Meter 8520 Dust Track
Aerosol Monitor |
Every year |
28
Sep 2007 |
Integrated SLM Rion NL-31 |
Every year |
14
April 2008 |
Sound level calibrator Rion NC-73 |
Every year |
25
June 2008 |
3.4.2
The calibration certificates are included in Appendix I.
3.5
Results of Impact Monitoring
Air Quality (1-hr TSP)
3.5.1
Results of 1-hour TSP level are summarised in Table 3‑5. Detailed
results, including weather conditions, and graphical presentations are included
in Appendix
E.
Table 3‑5 Results of 1-Hour TSP Impact Monitoring
Monitoring Station |
1-hour |
Action Level (µg/m3) |
Limit Level (µg/m3) |
A1 |
76 – 273 |
369 |
500 |
A2a |
69 – 259 |
357 |
500 |
Note: All figures are rounded off to the nearest whole number.
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 3‑6. Detailed
results, including weather conditions, and graphical presentations are included
in Appendix
E.
Table 3‑6 Results of 24-Hour TSP Impact
Monitoring
Monitoring Station |
24-hour |
Action Level (µg/m3) |
Limit Level (µg/m3) |
A1 |
82 – 101 |
180 |
260 |
A2a |
90 – 108 |
178 |
260 |
Note: All figures are rounded off to the nearest whole number.
3.5.4
No exceedance of Action / Limit Levels for 24-hr
TSP was recorded in the reporting month.
Airborne Fibre
3.5.5
As confirmed by laboratory, results of airborne
fibre from 1 August 2008 to 2 August 2008 are all below the reporting limit.
Details of calculation will be presented in Appendix
F once available from laboratory.
Noise
3.5.6
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
G.
Table 3‑7 Result
of Noise Monitoring
Monitoring
Station |
Measured
Leq(30 min) Range, dB(A) |
Limit
Level for Leq (30min), dB(A) (0700 – 1900 hours on normal weekdays) |
N1 |
71 – 73 |
75 |
N2 |
66 – 69 |
75 |
N3 |
71 – 74 |
75 |
Note: All figures are rounded off to the nearest whole number.
3.5.7
No exceedance of Action / Limit Levels for
construction noise was recorded.
Waste
Management
Table 3‑8 Monthly Summary Waste Flow Table for 2008
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 tons) |
(In tons) |
(In tons) |
(In tons) |
(In tons) |
(In ‘000 kg) |
(In ‘000 kg) |
(In ‘000 kg) |
(In ‘000 kg) |
(In tons) |
|||||||||||
Est. |
Act. |
Est. |
Act. |
Est. |
Act. |
Est. |
Act. |
Est. |
Act. |
Est. |
Act. |
Est. |
Act. |
Est. |
Act. |
Est. |
Act. |
Est. |
Act. |
|
Jan |
0.25 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0.25 |
0 |
1 |
0 |
0.1 |
0 |
0.1 |
0 |
0.1 |
0 |
0.25 |
0.012 |
Feb |
0.25 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0.25 |
0 |
1 |
0 |
0.1 |
0 |
0.1 |
0 |
1 |
0 |
0.25 |
0 |
Mar |
0.25 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0.25 |
0 |
1 |
0 |
0.1 |
0 |
0.1 |
0 |
10 |
* |
0.25 |
0 |
Apr |
3.75 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
3.75 |
0 |
50 |
73.03 |
0.1 |
0 |
0.1 |
0 |
20 |
* |
0.25 |
0.125 |
May |
3.75 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
3.75 |
0 |
50 |
92.24 |
0.1 |
0 |
0.1 |
0 |
20 |
0 |
0.25 |
0.125 |
June |
3.75 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
3.75 |
0 |
50 |
447.12 |
0.1 |
0 |
0.1 |
0 |
25 |
* ^ |
0.25 |
0.100 |
Sub-total |
12 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
12 |
0 |
153 |
612.39 |
0.6 |
0 |
0.6 |
0 |
76.1 |
- |
1.5 |
0.362 |
Jul |
5 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
5 |
0 |
90 |
470.34 |
0.1 |
0 |
0.1 |
0 |
25 |
9.2 * ^ |
0.25 |
0.15 |
Aug |
5 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
5 |
0 |
90 |
340.45 |
0.1 |
0 |
0.1 |
0 |
25 |
17.0 * ^ |
0.25 |
0.225 |
Sep |
5 |
|
0 |
|
0 |
|
0 |
|
5 |
|
90 |
|
0.1 |
|
0.1 |
|
15 |
|
0.25 |
|
Oct |
5 |
|
0 |
|
0 |
|
0 |
|
5 |
|
90 |
|
0.1 |
|
0.1 |
|
15 |
|
0.25 |
|
Nov |
5 |
|
0 |
|
0 |
|
0 |
|
5 |
|
90 |
|
0.1 |
|
0.1 |
|
15 |
|
0.25 |
|
Dec |
5 |
|
0 |
|
0 |
|
0 |
|
5 |
|
90 |
|
0.1 |
|
0.1 |
|
0.1 |
|
0.25 |
|
Total |
42 |
|
0 |
|
0 |
|
0 |
|
42 |
|
693 |
|
1.2 |
|
1.2 |
|
171.2 |
|
3 |
|
* Up to 31 August 2008: Total ACM generated as chemical waste =
168.29 m3. Total ACM disposed (to SENT landfill) = 114.24 m3.
All ACM generated is stored on-site prior to disposal.
^ Up
to 31 August 2008: Total DCM generated as chemical waste: 163.1 m3.
All DCM generated is stored on-site.
4.1.1
One environmental meeting was held on the day of
the monthly site inspection on 18 August 2008.
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/
Submission |
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 |
v 1.1 on 9 Nov 2007 v 2.0 on 4 Dec 2007 v 3.0 on 17 Jan 2008 v 3.1 on 5 Feb 2008 v 3.2 on 28 Feb 2008 v 4.0 on 8 May 2008 v 4.1 on 12 Jun 2008 (including addendum
& amendment pages submitted on 26 Jun 2008) |
WMP v 4.1 (incorporating addendum &
amendment pages) approved by EPD on 10 July 2008 (includes ACM removal involving Chimney A
& B) |
4. |
Registration as a Chemical Waste Producer under
Waste Disposal (Chemical Waste) (General) Regulation (ref. no.:
WPN5213-111-H2999-02) |
23 Oct 2007 Approved on 6 Nov 2007 |
Valid |
5. |
Effluent Discharge Licence under Water Pollution
Control Ordinance (licence no.: EP880/W10/XX0297) |
27 Oct 2007 Approved by EPD on 2 June 2008 |
Valid until 31 May 2010 |
6. |
Supplementary Asbestos Investigation Report (AIR)
and Asbestos Abatement Plan (AAP) for KTA |
30 Jan 2008 Approved by EPD on 26 Feb 2008 |
Valid |
7. |
Supplementary AIR and AAP for KTIP |
14 Mar 2008 Approved by EPD on 19 May 2008 |
Valid |
New submissions |
|||
|
No new submissions |
|
|
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.
4.3.2
During the reporting month, 56.46 m3 of
ACM were disposed to SENT Landfill. All asbestos removal works were completed
on 31 July 2008.
4.3.3
In addition, 103.95 m3 of DCM were
generated in Rubble area (Zone 2), as shown in Figure 4.1, and no DCM was disposed of.
4.3.4
ACM generated but not yet disposed of and all DCM
generated so far have been stored on-site.
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/ Updated EM&A Manual has been given in Appendix C.
Figure 4.1 Location of DCM Removal
Works
5.1.1
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 18 August
2008 and weekly site inspections were carried out by the Contractor and ET on
7, 13 and 28 August 2008.
5.1.2
Major findings provided by ET and those jointly
provided by the ET and IEC on 18 August 2008 from the site inspections are
summarised in Table
5‑1 below.
Table 5‑1 Summary of Environmental Site
Inspections
Date of Inspection |
Major Observations |
Action(s) |
7 August 2008 |
A water pond next to a leaking water meter at the main
site entrance was observed. The Contractor was reminded to implement suitable
mitigation measures as soon as possible. |
The water pond was removed and the area concerned
was filled with concrete. (13 August 2008) |
Stagnant water in a drip tray was observed. This
should be cleared as soon as possible. |
Stagnant water in a drip tray was removed. (13
August 2008) |
|
The label for a chemical waste store had fallen off.
It should be re-affixed to the entrance as soon as possible. |
The label for a chemical waste store was re-affixed
to the entrance. (13 August 2008) |
|
Tarpaulin covering for a stockpile of C&D waste
next to Lairage Block was damaged and should be replaced as soon as possible. |
Tarpaulin covering for a C&D waste stockpile was
replaced. (13 August 2008) |
|
13 August 2008 |
Leakage from a water hose near Chimney B was
observed. The Contractor was advised to rectify the matter as soon as
possible. |
Water hose was moved from the area near Chimney B.
No water pond was observed. (18 August 2008) |
18 August 2008 |
As a reminder, the Contractor should remove all
empty containers from the chemical waste storage area. |
Removal of empty containers from the chemical waste
storage area remains outstanding. (27 August 2008 & 5 September 2008) |
27 August 2008 |
Some stagnant water in a drip tray was observed. The
Contractor was reminded to remove the water as soon as possible. |
Stagnant water in a drip tray was removed. (5
September 2008) |
The Environmental Permit at the main site entrance
was missing. It should be replaced as soon as possible. |
A new copy of the Environmental Permit was placed at
the main site entrance. (5 September 2008) |
5.1.3
There were no non-compliances regarding site
environmental audits in this reporting month.
5.2
Condition of Identified Surface Cracks
5.2.1
In accordance with EP Conditions 2.5 (e),
inspection findings and repair works carried out should be reported in the
monthly EM&A Report.
5.2.2
Repair works for the identified surface cracks was
completed in January 2008, and the Contractor’s photo records of the repaired
cracks for documentation are presented in Appendix G of the EM&A report for
Feb 2008. This documentation shall become the baseline condition to be compared
against in each subsequent site inspection for any deterioration, which is to
be reported in every coming monthly EM&A Report.
5.2.3
During weekly site inspections in the reporting
month, no deterioration in the condition of the repaired surface cracks was
observed.
5.3
Site Effluent Discharge/WPCO Effluent Discharge
5.3.1
An application was made to EPD on 27 Oct 2007
regarding WPCO discharge licence and was approved by EPD on 2 June 2008. The
drainage plan which was included in the application is shown in Figure 5.1.
5.3.2
For discharge sampling conducted on 26 July 2008,
two water samples were taken at the discharge outlet of the sedimentation tank
at Kennedy Town Abattoir and analysed. The concentration of suspended solids in
both samples exceeded the limit specified in the Discharge Licence issued by
EPD. ER has asked the Contractor to conduct follow-up action on this matter.
6.1
Summary of Environmental Complaints,
Notifications of Summons and Successful Prosecutions
6.1.1
No environmental complaint, notification of summons
and prosecution has been received or made against the Project in this reporting
month. Table 6‑1 below presents a statistic of complaints,
notification of summons and successful prosecution since the commencement of
the Project.
Table 6‑1 Summary of Environmental Complaints
and Prosecutions
Complaints Logged |
Summons Served |
Successful Prosecutions |
|||
Aug
2008 |
Cumulative |
Aug
2008 |
Cumulative |
Aug
2008 |
Cumulative |
0 |
0 |
0 |
1 |
0 |
0 |
6.1.2
Regarding the summons served on the Contractor by
EPD in May 2008 concerning an alleged breach of the Waste Disposal (Charges for
Disposal of Construction Waste) Regulation due to late application of the
required billing account under the regulation, a hearing into this matter has
been deferred until October 2008.
6.1.3
Appendix B presents the environmental complaint event
contingency plan of the Project.
6.2.1
No environmental enquiries were received during the
reporting month.
6.3.1
No unusual events were recorded during the
reporting month.
6.4
Environmental Exceedance/ Non-compliance
6.4.1
The Event and Action Plans for air quality and
noise are presented in Appendix B.
Air
Quality - Dust
6.4.2
No exceedance of the Action and Limit Levels for
1-hour and 24-hour TSP was recorded.
Air
Quality – Airborne Fibre
6.4.3
No exceedance of the Action and Limit Levels for
airborne fibre was recorded.
Noise
Impact
6.4.4
No exceedance of the Action and Limit Levels for
construction noise was recorded.
Wastewater
6.4.5
No discharge of trade effluent was observed during
site inspections. Contractor provided modifications to the existing draining
system to control surface runoff during demolition and abatement works to
satisfy the requirements of WPCO. This is shown in Figure 5.1 and included in the Contractor’s application for an
Effluent Discharge Licence under WPCO which was approved by EPD on 2 June 2008
and received by ER on 3 July 2008.
6.4.6
Two water samples were taken at the discharge
outlet of the sedimentation tank at Kennedy Town Abattoir on 26 July 2008.
Laboratory analysis of the samples detected exceedance of the limit for
suspended solids concentration specified in the Discharge Licence issued by
EPD. ER has asked the Contractor to conduct follow-up action on this matter.
Waste
Management
6.4.7
Not applicable.
Summary of Exceedances
6.4.8
Table
6‑2 summarises the total number of exceedances for air
quality, airborne fibre and noise monitoring recorded during the reporting
period.
Table 6‑2 Summary of Exceedances
Parameters |
Total no. of
Measurements |
Action Level
Exceedance |
% of Action Level Exceedance |
Limit Level Exceedance |
% of Limit Level Exceedance |
Air Quality |
48 |
0 |
0% |
0 |
0% |
Airborne Fibre |
9 |
0 |
0% |
0 |
0% |
Noise |
12 |
N/A |
N/A |
0 |
0% |
Note: 'N/A' – Not applicable. Action Level for
noise relates to the number of documented complaints received
6.4.9
No exceedance was recorded
in the reporting period.
7.1
Key Issues and Recommendations for Coming
Month
7.1.1
Key activities to be considered in the coming month
include: -
· Impact monitoring for dioxin;
· Off-site disposal of asbestos
containing material (ACM);
· Dioxin containing material (DCM)
removal works;
· Dioxin removal works;
· Preparation of demolition works; and
· Demolition works.
7.1.2
Based on the above key issues, the recommended
mitigation measures to be implemented include the following: -
Air
· Covers for dusty stockpiles and
control of dust emissions from construction (demolition) works;
· Wetting of dusty stockpiles by
sprinklers;
· Haul road watering and vehicle wheel
wash prior to exit; and
· All plant to be maintained to
prevent any undue air emissions.
Noise
· All plant shall be maintained to
prevent any undue noise nuisance.
Water
· All wheel wash water shall be
diverted to a sediment pit;
· All clean surface water shall be
diverted around the site; and
· All fuel cans, generators shall be
placed within a bunded area; and any fuel spills shall be mopped up or
excavated and disposed of as necessary.
Waste
· Different types of waste should be
segregated, stored, transported and disposed of in accordance with the relevant
legislative requirements and guidelines; and
· Records of quantities of wastes
generated, recycled and disposal (with locations) shall be kept.
ACM / DCM
· Removal, handling, transportation
and disposal of the wastes in line with relevant regulations.
8.1.1
EM&A was performed in Aug 2008. All monitoring
and audit results in the reporting month were checked and reviewed.
8.1.2
Dust and noise monitoring were conducted during the
reporting month due to continuation of demolition works and scaffolding erection
works. No exceedances of the Action and Limit Levels for dust and construction
noise were recorded.
8.1.3
Also, asbestos abatement activities were completed
on 31 July 2008 and airborne fibre monitoring was also conducted on 1 and 2
August 2008 subsequent to the completion of these works. No exceedances of the
Action and Limit Levels for airborne fibre were recorded.
8.1.4
Furthermore, dioxin abatement works continued
during the reporting month and dioxin impact monitoring was conducted during
the course of these works.
8.1.5
During the reporting month, no deterioration was
observed in the repaired cracks on the existing concrete ground slab, and
therefore no further repair works were required.
8.1.6
No environmental complaints, notification summons
or successful prosecutions have been received or made against this Project in
this reporting month.
8.2.1
No further 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 |
260 |
A2a |
178 |
260 |
Note: All figures are rounded off to the
nearest whole number.
Action and Limit
Levels for 1-hour TSP
Monitoring Station |
Action Level (mg/m3) |
Limit Level (mg/m3) |
A1 |
369 |
500 |
A2a |
357 |
500 |
Note: All figures are rounded off to the
nearest whole number.
Action and Limit
Levels for Airborne Fibre
Monitoring Station |
Action Level (fibre/ml) |
Limit Level (fibre/ml) |
AF1 |
|
|
AF2 |
0.006 |
0.01 |
AF3 |
|
|
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 |
Appendix B Event and Action Plans
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 |
Implementation
Status ^ |
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 |
ü |
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 |
ü |
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 |
ü |
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 |
ü |
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 |
X |
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 |
ü |
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 |
ü |
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 |
ü |
F |
Demolition Sequence |
Include careful consideration and positioning of portable
noise barriers to allow noise attenuation.
|
CEDD’s Contractor |
As above |
C |
8 |
N/A |
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 |
N/A |
H |
Plant Operation |
Modify continuous operational periods for noisy plant to
comply with noise criteria. |
CEDD’s Contractor |
As above |
C |
Env Permit |
ü |
I |
Demolition Techniques |
Selection of non-blasting demolition techniques to minimise
noise and vibration. |
CEDD’s Contractor |
As above |
C |
8 |
ü |
J |
Plant maintenance |
All plant shall be maintained to prevent any undue noise
nuisance. |
CEDD’s Contractor |
As above |
C |
2, 3 |
ü |
K |
Wheel wash |
All wheel wash water shall be diverted to a sediment pit. |
CEDD’s Contractor |
As above |
C |
5 |
ü |
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 |
ü |
M |
Surface water diversion |
All clean surface water shall be diverted around the site. |
CEDD’s Contractor |
As above |
C |
5, 12 |
ü |
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 |
ü |
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 |
ü |
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 |
ü |
Q |
Material containers |
All empty bags and containers shall be collected for
disposal. |
CEDD’s Contractor |
As above |
C |
6,7 |
ü |
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 |
ü |
S |
Neighbourhood nuisance |
All complaints regarding construction works shall be relayed
to the environmental team. |
CEDD’s Contractor |
As above |
C |
1, 6 |
ü |
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 |
ü |
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 |
ü |
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 |
ü |
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 |
ü |
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 |
ü |
|
|
|
|
|
|
|
|
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 |
ü |
* 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).
^ Implementation
Status:
ü implemented
Ï not
implemented
P partially
implemented
X rectified
by Contractor
Relevant Guidelines Legislation references:
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 |
Implementation Status ^ |
||
|
|
|
|
|
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 |
|
|
X |
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 |
ü |
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 |
ü |
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 |
ü |
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 |
ü |
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 |
ü |
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 |
ü |
|
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 |
ü |
|
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 |
ü |
|
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 |
ü |
|
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 |
ü |
|
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 |
N/A |
|
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 |
ü |
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 |
N/A |
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 |
ü |
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 |
ü |
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 |
ü |
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 |
ü |
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) |
ü |
|
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) |
ü |
|
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) |
ü |
|
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) |
ü |
|
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) |
ü |
|
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) |
N/A |
|
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) |
ü |
|
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) |
X |
|
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) |
ü |
|
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 |
|
|
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 |
ü |
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 |
|
|
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 |
|
|
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 |
|
|
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), |
ü |
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 |
|
|
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 |
|
|
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 |
|
|
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 |
|
|
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 |
|
|
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 |
|
|
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 |
|
|
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 |
|
|
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) |
ü |
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 |
ü |
|
|
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); |
ü |
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 |
N/A |
|
|
“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 |
|
|
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 |
P |
|
|
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 |
|
|
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 |
|
|
N/A |
|
|
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 |
ü |
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 |
|
|
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 |
ü |
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 |
|
|
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 |
|
|
P |
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 |
|
ü |
|
|
ü |
7.10.16 |
5.2.15 |
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. |
KTCDA Site - Phase 1 Part 1 |
CEDD’s Contractor |
|
ü |
|
|
ü |
|
|
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. |
KTCDA Site - Phase 1 Part 1 |
CEDD’s Contractor |
|
ü |
|
|
ü |
|
|
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. |
KTCDA Site - Phase 1 Part 1 |
CEDD’s Contractor |
|
ü |
|
|
ü |
|
|
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. |
KTCDA Site - Phase 1 Part 1 |
CEDD’s Contractor |
|
ü |
|
|
ü |
|
|
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. |
KTCDA Site - Phase 1 Part 1 |
CEDD’s Contractor |
|
ü |
|
|
ü |
|
|
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. |
KTCDA Site - Phase 1 Part 1 |
CEDD’s Contractor |
|
ü |
|
Section 7 of the Code of Practice on the Handling, Transportation and Disposal of
Asbestos Waste. |
ü |
|
|
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. |
KTCDA Site - Phase 1 Part 1 |
CEDD’s Contractor |
|
ü |
|
|
ü |
|
|
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. |
KTCDA Site - Phase 1 Part 1 |
CEDD’s Contractor |
|
ü |
|
|
ü |
|
|
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. |
KTCDA Site - Phase 1 Part 1 |
CEDD’s Contractor |
|
ü |
|
|
ü |
|
|
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. |
KTCDA Site - Phase 1 Part 1 |
CEDD’s Contractor |
|
ü |
|
|
ü |
|
|
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. |
KTCDA Site - Phase 1 Part 1 |
CEDD’s Contractor |
|
ü |
|
|
ü |
|
|
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. |
KTCDA Site - Phase 1 Part 1 |
CEDD’s Contractor |
|
ü |
|
|
P |
|
|
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. |
KTCDA Site - Phase 1 Part 1 |
CEDD’s Contractor |
|
ü |
|
|
ü |
|
|
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. |
KTCDA Site - Phase 1 Part 1 |
CEDD’s Contractor |
|
ü |
|
Waste Disposal
(Chemical Waste) (General) Regulation. |
P |
|
|
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. |
KTCDA Site - Phase 1 Part 1 |
CEDD’s Contractor |
|
ü |
|
|
ü |
|
|
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. |
KTCDA Site - Phase 1 Part 1 |
CEDD’s Contractor |
|
ü |
|
|
P |
|
|
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. |
KTCDA Site - Phase 1 Part 1 |
CEDD’s Contractor |
|
ü |
|
|
ü |
7.10.21 |
5.2.28 |
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. |
KTCDA Site - Phase 1 Part 1 |
CEDD’s Contractor |
|
ü |
|
|
ü |
7.10.22 |
5.2.39 |
An on-site temporary storage area should also be provided. |
KTCDA Site - Phase 1 Part 1 |
CEDD’s Contractor |
|
ü |
|
|
ü |
7.10.25 |
5.2.32 |
A recording system for the amount of wastes generated, recycled and
disposed (including the disposal sites) should be proposed. |
KTCDA Site - Phase 1 Part 1 |
CEDD’s Contractor |
|
ü |
|
ETWB TC(W) No. 15/2003 |
ü |
^ Implementation
Status:
ü implemented
Ï not
implemented
P partially
implemented
X rectified
by Contractor
Table C‑5 Event Contingency Plan for
Environmental Complaints
Step |
Day |
Action |
Contractor |
ER |
ET |
IEC |
1 |
1 |
Party receiving complaint
shall create a new complaint record. If the Contractor receives a complaint,
he shall pass the information to the ER.
|
¨ |
¨ |
¨ |
|
2 |
1 |
ER to ensure details of complaint
provided to Contractor (if complaint not originally received by the
Contractor), ET and IEC |
|
¨ |
|
|
3 |
2 |
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. |
¨ |
|
|
à |
4 |
2 |
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. |
|
|
|
¨à |
5 |
2 |
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. |
|
¨ |
|
|
6 |
2 |
Propose mitigation measures
to ER within 1 working day of the receipt of the Notification. |
¨ |
|
|
à |
7 |
2 |
Review and agree with the
proposed mitigation measures and make recommendations where necessary. |
|
¨à |
|
¨à |
8 |
2 |
Implement the mitigation measures
once they have been agreed. |
¨ |
|
|
|
9 |
4 |
Audit the implementation of
the proposed mitigation measures on site within 2 working days after measures
have been agreed. |
|
¨à |
|
¨à |
10 |
- |
Undertake additional monitoring
to verify the situation where necessary. |
|
|
¨ |
|
11 |
4 |
Report the investigation
results and subsequent actions taken to ER within 2 working days after the
implementation of mitigation measures. |
¨ |
|
¨ |
|
12 |
5 |
Respond to the complainant
within 1 working day after receiving the investigation report. |
|
¨ |
|
|
13 |
25 |
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. |
|
¨ |
|
¨à |
¨ Action
Party
à
Enter comments/ proposals into appropriate complaint record where applicable
Appendix D EM&A Schedule
Appendix E Air Quality Monitoring Results and Graphical Presentation
Appendix F Airborne Fibre Monitoring Results
Note: Please refer
to the attached chart showing laboratory calculated results on airborne fibre
monitoring (ETS-Testconsult Limited, letter ref. no.: OC/80351/CL dated 30
June 2008).
Appendix G Noise Monitoring Results and Graphical Presentation
Appendix H Photo Records for the Repairing of Deteriorated Cracks on Existing
Concrete Ground Slab
Not Applicable for
this Reporting Month