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 Mar 2008
(Phase 1 Part 1) Rev A
Report No.: 203204/EM&A/6/A
April 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.
Demolition of Buildings
and Structures in the Proposed
Environmental
Permit No.
EP-136/2002/B
Monthly EM&A Report
for Mar 2008
(Phase 1 Part 1) Rev A
Report No.: 203204/EM&A/6/A
April 08
Issue and Revision Record
|
Rev |
Date |
Originator |
Checker |
Approver |
Description |
|
A |
Apr 2008 |
Brandon Wong |
Roger Leung |
Anne F Kerr |
Submission to EPD |
|
|
|
|
|
|
|
Pursuant to
Condition 2.3 and 3.5 of the Environmental Permit
EP-136/2002/B
This Monthly
EM&A Report (Mar 2008) for Phase 1 Part 1
Has been
reviewed, certified and verified by
Independent
Environmental Checker (IEC)
Hyder Consulting Limited
Date 14 April
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 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 iv
6.1 Key Issues and Recommendations
for Coming Month......................................... iv
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.......... 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............................................................... 3-5
Table 3‑3............. Noise Monitoring Equipment............................................................................ 3-5
Table
3‑4............. Equipment Calibration
Frequencies.................................................................. 3-5
Table
3‑5............. Results of 1-Hour TSP
Impact Monitoring........................................................ 3-6
Table
3‑6............. Results of 24-Hour TSP
Impact Monitoring...................................................... 3-6
Table
3‑7............. Results of Airborne
Fibre Impact Monitoring.................................................... 3-6
Table
3‑8............. Result of Noise
Monitoring.............................................................................. 3-6
Table
3‑9............. Monthly Summary Waste Flow Table for 2008................................................. 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....................................................................... 1
Table
B‑2............. Event/Action Plan for
Noise Impact.................................................................... 2
Table C‑3............. Implementation Schedule of Recommended Mitigation Measures.......................... 1
Table C-4............. Implementation Schedule of Recommended Mitigation Measures.......................... 4
Table C‑5............. Event Contingency Plan for Environmental Complaints....................................... 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
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 March 2008.
This is the 6th Monthly EM&A Report for works carried out during the reporting month of Mar 2008.
The following construction activities have taken place during the reporting month: -
· Steel hoarding erection works;
· Scaffolding erection works;
· General site clearance works;
· Covered walkway erection works;
· Asbestos removal preparation works; and
· Asbestos removal works.
During the reporting month, removal works for asbestos containing materials (“ACM”) commenced, but no removal of dioxin/ furan contaminated materials (“DCM”) were carried out.
Throughout the reporting month, hoarding erection works continued and hence regular dust and noise monitoring were conducted. In addition, airborne fibre impact monitoring was conducted during the reporting month following the commencement of asbestos abatement works on-site.
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 5, 10, 20 and 26 Mar 2008.
No non-compliances with regard to site environmental audits were 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 are presented in Appendix G of EM&A report for Feb 2008.
Future key activities envisaged in the coming month include: -
· Steel hoarding erection works;
· Scaffolding erection works;
· Covered walkway erection works;
· Impact monitoring for airborne fibre;
· Asbestos removal preparation works; and
· Asbestos removal works.
A tentative program for works activities is given in Appendix J.
1.1.1 This Project – “Demolition of Buildings and Structures in the Proposed Kennedy Town Comprehensive Development Area Site” is a Designated Project defined under the EIA Ordinance. An Environmental Permit (“EP”) was issued on 22 May 2002 [Permit No. EP-136/2002] and was subsequently varied. The latest EP [Permit No. EP-136/2002/B] in force was granted on 18 Oct 2007.
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 March 2008.
1.2.2 This is the 6th 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.
1.4.1 This Contract for Phase 1 Part 1 of the Project contractually commenced on 28 September 2007. The main Contract will last for 18 months.
1.5 Works Undertaken in the Reporting Month
1.5.1 The following construction activities have taken place during the reporting month: -
· Steel hoarding erection works;
· Scaffolding erection works;
· General site clearance works;
· Covered walkway erection works;
· Asbestos removal preparation works; and
· Asbestos removal works.
1.5.2 During the reporting month, removal works for asbestos containing materials (“ACM”) have commenced following the approval of the Waste Management Plan v3.2 on 14 Mar 2008.
1.5.3 No removal of dioxin/ furan contaminated materials (“DCM”) was carried out.
Figure 1.1 Layout Plan of Work Site and Neighbouring Sensitive Receivers
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 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 |
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
3.1 Impact Monitoring Schedule
3.1.1 Regular site inspections were carried out on 5, 10, 20 and 26 Mar 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, hoarding and bamboo scaffolding erection works took place, and air quality and noise monitoring continued. In addition, asbestos abatement works commenced, and during the course of these works airborne fibre 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: 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.
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 |
20 Feb 2008 |
|
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 |
3.4.2 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 |
142 – 272 |
369.1 |
500 |
|
A2a |
120 – 314 |
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 3‑6. 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 |
1-hour
|
Action
Level (µg/m3) |
Limit
Level (µg/m3) |
|
A1 |
61.4 – 85.8 |
180.4 |
260 |
|
A2a |
68.4 – 79.2 |
177.8 |
260 |
3.5.4 No exceedance of Action / Limit Levels for 24-hr TSP was recorded in the reporting month.
Airborne Fibre
3.5.5 Results of airborne fibre level are summarised in Table 3‑7 below. Detailed results and graphical presentations are included in Appendix F.
Table 3‑7 Results of Airborne Fibre Impact Monitoring
|
Monitoring
Station |
Airborne Fibre Range (fibre/ml) |
Action
Level (fibre/ml) |
Limit
Level (fibre/ml) |
|
AF1 |
< 0.01 (all results) |
|
|
|
AF2 |
< 0.01 (all results) |
0.006 |
0.01 |
|
AF3 |
< 0.01 (all results) |
|
|
3.5.6 No exceedance of Action/ Limit Levels for airborne fibre was recorded in the reporting month.
Noise
3.5.7 Results of measured noise level, in terms of Leq (30min), during construction are summarised in Table 3‑8. Detailed results, including weather conditions, and graphical presentations are presented in Appendix G.
Table 3‑8 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 |
64.2 – 72.0 |
75 |
|
N2 |
59.7 – 69.5 |
75 |
|
N3 |
65.5 – 70.3 |
75 |
3.5.8 No exceedance of Action / Limit Levels for construction noise was recorded.
Waste Management
Table 3‑9 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 |
|
3.75 |
|
50 |
|
0.1 |
|
0.1 |
|
20 |
|
0.25 |
|
|
May |
3.75 |
|
0 |
|
0 |
|
0 |
|
3.75 |
|
50 |
|
0.1 |
|
0.1 |
|
20 |
|
0.25 |
|
|
June |
3.75 |
|
0 |
|
0 |
|
0 |
|
3.75 |
|
50 |
|
0.1 |
|
0.1 |
|
25 |
|
0.25 |
|
|
Sub-total |
12 |
|
0 |
|
0 |
|
0 |
|
12 |
|
153 |
|
0.6 |
|
0.6 |
|
76.1 |
|
1.5 |
|
|
Jul |
5 |
|
0 |
|
0 |
|
0 |
|
5 |
|
90 |
|
0.1 |
|
0.1 |
|
25 |
|
0.25 |
|
|
Aug |
5 |
|
0 |
|
0 |
|
0 |
|
5 |
|
90 |
|
0.1 |
|
0.1 |
|
25 |
|
0.25 |
|
|
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 |
|
* Note: 60 m3 of asbestos generated as chemical wastes. No DCM was generated.
4.1.1 One environmental meeting was held on the day of the monthly site inspection on 10 Mar 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 |
v1.1 on 9 Nov 2007 v2.0 on 4 Dec 2007 v3.0 on 17 Jan 2008 v3.1 on 5 Feb 2008 v3.2 on 28 Feb 2008 |
WMP v 3.2 was approved by EPD on 19 Mar 2008.
However, the approval did not include ACM/ DCM 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 |
27 Oct 2007 |
EPD replied on 22 Jan 2008. Awaiting Contractor’s
response. |
|
7. |
Supplementary
Asbestos Investigation Report (AIR) and Asbestos Abatement Plan (AAP) |
30 Jan 2008 Approved by EPD on 26 Feb 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 3‑9. A trip ticket system has been implemented for all off-site waste disposals. During the reporting month, 60 m3 of ACM was generated but no removal of DCM has started yet. ACM was generated at the following locations:
· Segregation Zone 2 & 3: 1/F, Lairage Block (full containment);
· Segregation Zone 4 & 5: G/F Slaughterhouse (full containment); and
· Segregation Zone 5: floor tiles between 3/F & 4/F, Slaughterhouse.
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.
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 complaint, notification of summons and prosecution has been received or made against the Project in this reporting month. Appendix B presents the environmental complaint event contingency plan of the Project and Table 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 Prosecutions |
|||
|
Mar 2008 |
Cumulative |
Mar 2008 |
Cumulative |
Mar 2008 |
Cumulative |
|
0 |
0 |
0 |
0 |
0 |
0 |
5.2.1 No environmental enquiries were received during the reporting month.
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 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 Fibre
5.4.3 No exceedance of the Action and Limit Levels for airborne fibre was recorded.
Noise Impact
5.4.4 No exceedance of the Action and Limit Levels for construction noise was recorded.
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 |
40 |
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
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 10 Mar 2008 and weekly site inspections were carried out by the Contractor and ET on 5, 10, 20 and 26 Mar 2008.
5.4.10 Major findings provided by ET and those jointly provided by the ET and IEC on 10 Mar 2008 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
March 2008 |
Some
rubbish items in a catchpit were observed. The
Contractor was reminded to remove all obstructing items as soon as possible. |
Rubbish
items in a catchpit were removed. |
|
10
March 2008 |
Deterioration
of repair works for some surface cracks (nos. 5, 7, 12, 18 & 42) was
observed. The Contractor was reminded to carry out further repair works as
soon as possible. |
Further
repair works were carried out for surface crack nos. 5, 7, 12, 18 & 42.
While surface crack nos. 7, 12, 18 & 42 were satisfactorily repaired,
repair works for surface crack no. 5 had deteriorated again. The Contractor
was reminded to perform further repair works as soon as possible. |
|
20
March 2008 |
Deterioration
of repair works for surface crack nos. 2 & 3 was observed. The Contractor
was reminded to perform further repair works as soon as possible. |
Repair
works for surface crack nos. 2, 3 & 5 was not yet carried out. It will be
followed up in this week. |
|
26
March 2008 |
Deterioration
of repair works for surface crack nos. 2, 3 & 5 were noted. The
Contractor was suggested to perform repair works as soon as possible. |
Repair
works for surface cracks nos. 2, 3 & 5 had not yet been carried out due
to inclement weather. The Contractor was reminded to follow-up as soon as
weather conditions permit. |
|
Drip
trays for diesel drums were filled with rainwater. The Contractor was
recommended to remove the accumulated rainwater ASAP. |
Tarpaulin
sheeting was provided to cover diesel drums and drip trays. Accumulated
rainwater was not observed. |
5.4.11 There are no non-compliances 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 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.
5.4.14 During the reporting month, the condition of some of the repaired surface cracks showed some deterioration. These observations and the follow-up actions for these were recorded during the weekly site inspections, as summarised in Table 5‑3. Photo records are provided in Appendix H.
6.1 Key Issues and Recommendations for Coming Month
6.1.1 Key activities to be considered in the coming month include: -
· Steel hoarding erection works;
· Scaffolding erection works;
· Covered walkway erection works;
· Impact monitoring for airborne fibre;
· Asbestos removal preparation works; and
· Asbestos removal works.
7.1.1 EM&A was performed in March 2008. All monitoring and audit results in the reporting month were checked and reviewed.
7.1.2 Dust and noise monitoring were conducted during the reporting month due to continuation of hoarding erection works. No exceedances of the Action and Limit Levels for dust and construction noise were recorded. Furthermore, the Supplementary Asbestos Investigation Report and Asbestos Abatement Plan submitted by the Contractor were approved by EPD on 26 February 2008. Asbestos abatement activities commenced in the reporting month and airborne fibre monitoring was conducted during the course of these works.
7.1.3 Some of the repaired cracks on existing concrete ground slab showed some deterioration. Photo records of these observations and the follow-up actions are documented in this report.
7.1.4 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.
7.1.5 No environmental complaints, notification summons or successful prosecutions have been received or made against this Project in this reporting month.
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 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 |
|
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 |
|
|