|
Content |
Chapter Title Page
Figures
|
Figure 1.1:_ Layout Plan of Work Site and the Environs Figure 1.2:_ Project Organisation Chart Figure 2.1:_ Location of Air Quality (Dust) Monitoring Station |
The following activities have taken place during the reporting month: -
¡
Excavation for
Ground Decontamination Works within contaminated area and uncontaminated area;
¡
Operation and
maintenance of the biopile decontamination system for Biopile No. 1 (for soil
contaminated with hydrocarbon) and Biopile No. 2 (for soil contaminated with hydrocarbon
and heavy metal);
¡
Backfilling within
contaminated area; and
¡
Downsizing and
sorting of the inert construction and demolition (C&D) materials by site
crusher.
Impact monitoring for air quality (dust) due to the demolition,
excavation and backfilling work and handling of inert C&D materials
continued during the reporting month. No exceedance of the Action and Limit
Levels for dust was recorded.
No environmental complaint, notification of summons and prosecution was
received or made against the Project in the reporting month.
Site inspection was carried out on a weekly basis to monitor proper
implementation of environmental pollution control and mitigation measures for
the Project. In this reporting month, site inspections were carried out on 10,
17 and 24 February 2011.
No non-compliances with regard to site environmental audits were
recorded in this reporting month.
As per the EM&A Manual, baseline 1-hour and 24-hour Total Suspended
Particulates (TSP) monitoring was conducted during the period of 31 October
2007 to 13 November 2007. Results were reported in the Baseline Monitoring
Report submitted in November 2007.
Future key issues to be considered in the forthcoming month (March 2011)
include: -
¡
Excavation
for Ground Decontamination Works within contaminated area and uncontaminated
area;
¡
Cement
solidification of the soil contaminated with heavy metal;
¡
Demolition
of Boundary Wall;
¡
Operation
and maintenance of the biopile decontamination system for Biopile No. 1 (for
soil contaminated with hydrocarbon) and Biopile No. 2 (for soil contaminated
with hydrocarbon and heavy metal);
¡
Backfilling
within contaminated area;
¡
Disposal
of the asbestos cement water pipes and related wastes to South East New
Territories (SENT) Landfill at Tseung
Kwan O by marine transport; and
¡
Downsizing
and sorting of the inert construction and demolition (C&D) materials by
site crusher.
This Project – “Demolition of Kwai
Chung Incineration Plant” – is a Designated Project defined under the
Environmental Impact Assessment Ordinance (EIAO, Cap 499). An Environmental
Impact Assessment (EIA) Report for the Project, including an Environmental
Monitoring and Audit (EM&A) Manual, was completed in September 2001 and
approved by the Environmental Protection Department (EPD) on 9 January 2002. An
Environmental Permit (EP) was issued on 1 March 2002 [Permit No. EP-121/2002].
Subsequently, an application for Variation of the Environmental Permit (VEP)
(Application No. VEP-284/2009) was submitted on 6 April 2009 and the amended
Environmental Permit [Permit No. EP-121/2002/A] was issued on 28 April 2009.
This Contract [No.: CV/2007/06] for
the Project was awarded to the Contractor – China International Water &
Electric Corporation (CIWE Corp.) – and commenced on 31 October 2007. The main
Contract will last for 45 months excluding 12 months for landscape
establishment works. In accordance with Condition 1.11 of Environmental
Permit No. EP-121/2002/A, the Director of Environmental Protection (DEP) was
notified that the commencement date for the Project was on 24 January 2008.
The scope of the Project includes
demolition and clearance of the existing chimney, buildings and ancillary
structures above the existing concrete ground slab where the former Kwai Chung
Incineration Plant (KCIP) is located. It also includes the removal of asbestos
containing materials (ACM) and dioxin/furan contaminated materials (DCM) prior
to demolition of structures and subsequent site remediation.
A layout plan of the Project site
and the environs are presented in Figure 1.1.
The Project Proponent – Civil
Engineering and Development Department (CEDD) – has commissioned Mott MacDonald
Hong Kong Limited (MMHK) and Hyder Consulting Limited (Hyder) as the
Environmental Team (ET) and the Independent Environmental Checker (IEC)
respectively to undertake the Environmental Monitoring and Audit (EM&A)
programme described in the approved EM&A Manual of the Project. CEDD has
also commissioned MMHK as the Engineer’s Representative (ER) for all
Project-related works.
1.2
Coverage
of this EM&A Report
The EM&A programme for this Project
commenced on 1 December 2007. This report presents a summary of the
environmental monitoring and audit works, list of activities, and mitigation
measures implemented during the reporting month of February 2011. This is the
39th Monthly
EM&A Report for the project.
1.3
Project
Management Organisation
The project organisation chart is
presented in Figure 1.2.
This Contract of the Project
commenced on 31 October 2007. The main Contract will last for 45 months.
1.5
Works
Undertaken in the Reporting Month
The following activities have taken
place during the reporting month: -
¡
Excavation for
Ground Decontamination Works within contaminated area and uncontaminated area;
¡
Operation and
maintenance of the biopile decontamination system for Biopile No. 1 (for soil
contaminated with hydrocarbon) and Biopile No. 2 (for soil contaminated with
hydrocarbon and heavy metal);
¡
Backfilling within
contaminated area; and
¡
Downsizing and
sorting of the inert construction and demolition (C&D) materials by site
crusher.
Figure 1.1: Layout Plan of Work Site and
the Environs
Figure 1.2: Project Organisation Chart
2.1
Summary
of EM&A Requirements
The EM&A programme requires
environmental monitoring of air quality and waste management as specified in
the approved EM&A Manual (dated September 2001).
1-hour Total Suspended Particulates
(TSP) and 24-hour TSP levels at one dust monitoring station are to be taken
during the course of dusty work in every reporting month. This air quality
monitoring station for 24-hour TSP and 1-hour TSP measurements is shown in Figure
2.1 below.
A summary of impact EM&A
requirements is presented in Table
2.1.
Table 2.1: Summary
of Impact EM&A Requirements
|
Parameters |
Descriptions |
Locations |
Frequencies |
Duration |
|
Air Quality |
24-Hour TSP |
1 Location - A1 |
Once every 6 days |
During dust generating construction works |
|
1-Hour TSP |
1 Location - A1 |
3 times every 6 days |
During dust generating construction works |
|
|
Waste |
On-Site Waste Audit |
Active Work Sites |
Weekly |
During Construction |
|
On-Site Waste Inspection |
||||
|
Wastewater |
On-Site Wastewater Audit |
Active Work Sites |
Weekly |
During Construction |
|
General Site Conditions |
Environmental Site Inspection |
Works areas and areas affected by works |
Weekly |
During Construction |
Note: A1 – Boundary of the site adjacent to
the Kwai Chung Primary Treatment Plant.
2.2
Environmental
Quality Performance Limits
Environmental
Quality Performance Limits for air quality are shown in Appendix
A.
The Event
and Action Plans for air quality are shown in Appendix
B.
2.4
Implementation
of Environmental Mitigation Measures
The Contractor is required to
implement mitigation measures listed in the latest EP, EIA Report and EM&A
Manual. During routine site inspections, the Contractor's implementation of
mitigation measures, if any, are 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 Air Quality (Dust)
Monitoring Station
3.1
Impact
Monitoring Schedule
Regular site inspections were
carried out on 10, 17 and 24 February 2011 in the reporting month to assess the
compliance with environmental requirements. The EM&A schedule is given in Appendix
D.
Impact monitoring for air quality
(dust) due to the demolition, excavation and backfilling work and handling of
inert C&D materials continued during the reporting month.
The High Volume Sampler (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 of the obstacle protruding above the HVS.
¡
A
minimum of 2 m 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.
3.2.1.2
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%.
¡
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 Hong Kong Laboratory Accreditation Scheme (HOKLAS)
accredited laboratory for analysis.
3.2.1.4
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.
¡
Each
HVS is to be calibrated at a bi-monthly intervals using GMW-25 Calibration Kit
throughout all stages of the air quality monitoring.
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.
3.2.2.2
Maintenance
and Calibration
¡
The
1-hour TSP meter would be checked at 3-month intervals and calibrated at
6-month intervals throughout all stages of the air quality monitoring.
As per the approved EM&A Manual, dust
monitoring stations are located as shown in Figure 2.1 above.
The
equipment used for air quality (dust) monitoring is listed in Table 3.1.
Table 3.1: TSP Monitoring Equipment
|
Equipment |
Model(s) |
|
HVS Sampler |
Greasby GMWS 2310 Accu-vol system |
|
Calibrator |
Tisch TE-5025A |
|
1-hour TSP Dust Meter |
TSI Model 8520
Dust Trak Aerosol Monitor |
The
calibration frequencies of the monitoring equipment are provided in Table
3.2.
Table 3.2: Equipment Calibration
Frequencies
|
Equipment |
Calibration Frequency |
Calibration Due Date(s) |
|
High Volume Sampler Greasby GMWS 2310 Accu-vol system |
Every two months |
2 Mar 2011 |
|
1-hour TSP
Dust Meter |
Every six
months |
|
|
·
TSI
Model 8520 Dust Trak Aerosol Monitor (serial number (S/N): 14230) |
|
TSI (S/N
14230): 12 Apr 2011 |
|
·
TSI
Model 8520 Dust Trak Aerosol Monitor (serial number: 15115) |
|
TSI (S/N
15115): 6 Jul 2011 |
|
·
TSI
Model 8520 Dust Trak Aerosol Monitor (serial number: 21672) |
|
TSI (S/N
21672): 12 Apr 2011 |
|
·
SIBATA
(serial number: 044870) |
|
SIBATA (S/N
044870): 28 Mar 2011 |
The
calibration certificates are included in Appendix
F.
3.5
Result
of Impact Monitoring
Results of 1-hour TSP level are
summarised in Table
3.3. Detailed
results, including weather conditions, and graphical presentations are included
in Appendix
E.
Table 3.3: Results
of 1-Hour TSP Impact Monitoring
|
Monitoring Station |
1-hour |
Action Level (µg/m3) |
Limit Level (µg/m3) |
|
A1 |
58 – 291 |
345 |
500 |
No exceedance of Action / Limit
Levels for 1-hr TSP was recorded in all other data for the reporting month.
Results of 24-hour TSP level are
summarised in Table
3.4. Detailed
results, including weather conditions, and graphical presentations are included
in Appendix
E.
Table 3.4: Results of 24-Hour TSP
Impact Monitoring
|
Monitoring Station |
24-hour |
Action Level (µg/m3) |
Limit Level (µg/m3) |
|
A1 |
138 – 142 |
179 |
260 |
No exceedance of Action / Limit
Levels for 24-hr TSP was recorded in all other data for the reporting month.
Wind data during the reporting month
was obtained from the nearest Hong Kong Observatory (HKO) monitoring station,
at Tsing Yi, and is presented in Appendix H.
One environmental meeting was held
on the day of the monthly site inspection on 17 February 2011.
4.2
Status
of Environmental Submissions, Permits and Licences
A summary of status of all
environmental submissions, permits, licences, and/or notifications to the
Environmental Protection Department (EPD) for this Project during the reporting
period is presented in Table
4.1 below.
Table 4.1: Status of Environmental
Submissions, Permits and Licences
|
Item |
Description |
Date of Application/ Submission |
Status |
|
1. |
Environmental Permit (No. EP-121/2002/A) under Variation of Environmental Permit (No. VEP-284/2009) |
VEP applied on 6 Apr 2009 |
VEP approved on 28 Apr 2009 |
|
2. |
Billing Account under Waste Disposal (Charges for Disposal of Construction Waste) Regulation (Ref. No.: 7006285) |
Approved on 16 Nov 2007 |
Valid |
|
3. |
Waste Management Plan for Demolition Works |
v3.3 approved on 9 Apr 2009 |
v3.3: Valid |
|
4. |
Waste Management Plan for Ground Decontamination Works |
v1.4 submitted on 4 May 2010 |
Approved by EPD on 28 May 2010 |
|
5. |
Registration as a Chemical Waste Producer under Waste Disposal (Chemical Waste) (General) Regulation (Ref. No.: WPN-5292-320-C3459-01) |
2 Nov 2007 |
Approved by EPD on 26 Nov 2007 |
|
6. |
Effluent Discharge Licence (Ref. No.: EP760/320/0128821) |
Variation of Licence submitted on 10 Nov 2008 |
Approved by EPD on 5 Jan 2009 which superseded the previous licence. Valid until 31 Mar 2013 |
|
7. |
Notification pursuant to Section 3(1) of the Air Pollution Control (Construction Dust) Regulation (Form NA) |
EPD notified on 15 Jan 2008 |
Valid |
|
8. |
Notification of commencement of asbestos abatement work pursuant to Section 73 of the Air Pollution Control Ordinance |
EPD notified on 4 Feb 2008 |
Valid Approved by EPD on 5 Mar 2008 |
|
9. |
Construction Noise Permit for KCIP site (Ref. No.: GW-RW0478-09) |
21 Oct 2009 |
Issued by EPD on 4 Nov 2009 Expired on 31 Mar 2010 |
|
10. |
Construction Noise Permit for KCIP site (Ref. No.: GW-RW0561-10) |
15 Oct 2010 |
Issued by EPD on 29 Oct 2010 Valid from 1 Nov 2010 to 30 Apr 2011 |
|
New submissions |
|
|
|
|
|
No new submissions |
|
|
The construction and demolition
(C&D) material & general refuse generated by the Project in the
reporting month are shown in Table
4.2 below. A trip ticket system has been implemented for all
off-site waste disposals.
Table 4.2: Monthly
Summary Waste Flow Table for 2011
|
|
Actual Quantities of Inert C&D
Materials Generated Monthly (in ‘000 m3) |
Actual Quantities of C&D Wastes
Generated Monthly |
||||||||||||||||||
|
Month |
Total Quantity Generated |
Broken Concrete |
Reused in the Contract |
Reused in other Projects |
Disposed of at Public Fill |
Metals (‘000 kg) |
Paper/ Cardboard (‘000 kg) |
Plastics (‘000 kg) |
Chemical waste (‘000 kg) |
Others
(e.g. refuse) (‘000 m3) |
||||||||||
|
|
Est. |
Act. |
Est. |
Act. |
Est. |
Act. |
Est. |
Act. |
Est. |
Act. |
Est. |
Act. |
Est. |
Act. |
Est. |
Act. |
Est. |
Act. |
Est. |
Act. |
|
Jan |
3.94 |
0 |
0 |
0 |
3.94 |
0 |
0 |
0 |
0 |
0 |
0.10 |
28.28 |
0.01 |
0 |
0.01 |
0 |
0.55 |
1.748 |
0.05 |
0.005 |
|
Feb |
3.94 |
0 |
0 |
0 |
3.94 |
0 |
0 |
0 |
0 |
0 |
0.10 |
5.55 |
0.01 |
0 |
0.01 |
0 |
0.55 |
0 * |
0.05 |
0 |
|
Mar |
1.97 |
|
0 |
|
1.97 |
|
0 |
|
0 |
|
0.10 |
|
0.01 |
|
0.01 |
|
3.55 |
|
0.05 |
|
|
Apr |
1.97 |
|
0 |
|
1.97 |
|
0 |
|
0 |
|
0.10 |
|
0.01 |
|
0.01 |
|
0.55 |
|
0.05 |
|
|
May |
3.06 |
|
0 |
|
3.06 |
|
0 |
|
0 |
|
0.10 |
|
0.01 |
|
0.01 |
|
0.55 |
|
0.05 |
|
|
Jun |
0 |
|
0 |
|
0 |
|
0 |
|
0 |
|
0 |
|
0.01 |
|
0.01 |
|
0.55 |
|
0.05 |
|
|
Sub-total |
14.88 |
0 |
0 |
0 |
14.88 |
0 |
0 |
0 |
0 |
0 |
0.50 |
33.83 |
0.06 |
0 |
0.06 |
0 |
6.30 |
1.748 |
0.30 |
0.005 |
|
Jul |
0 |
|
0 |
|
0 |
|
0 |
|
0 |
|
0 |
|
0.01 |
|
0.01 |
|
0.55 |
|
0.05 |
|
|
Aug |
0 |
|
0 |
|
0 |
|
0 |
|
0 |
|
0 |
|
0.01 |
|
0.01 |
|
0.55 |
|
0.05 |
|
|
Sep |
0 |
|
0 |
|
0 |
|
0 |
|
0 |
|
0 |
|
0.01 |
|
0.01 |
|
3.55 |
|
0.05 |
|
|
Oct |
0 |
|
0 |
|
0 |
|
0 |
|
0 |
|
0 |
|
0.01 |
|
0.01 |
|
0.55 |
|
0.05 |
|
|
Nov |
0 |
|
0 |
|
0 |
|
0 |
|
0 |
|
0 |
|
0.01 |
|
0.01 |
|
0.50 |
|
0.05 |
|
|
Dec |
0 |
|
0 |
|
0 |
|
0 |
|
0 |
|
0 |
|
0.01 |
|
0.01 |
|
0.50 |
|
0.50 |
|
|
Total |
14.88 |
|
0 |
|
14.88 |
|
0 |
|
0 |
|
0.50 |
|
0.12 |
|
0.12 |
|
12.50 |
|
1.05 |
|
* Note: No asbestos containing materials (ACM) or dioxin/furan
contaminated materials (DCM) were generated from the site and disposed of
during the reporting month.
4.4
Review
of Environmental Monitoring Procedures
The monitoring works conducted by
the Environmental Team have been reviewed regularly. No changes in the
environmental monitoring procedures are considered necessary at this stage.
4.5
Implementation
Status of Environmental Mitigation Measures
An Implementation Schedule of
Mitigation Measures from the EIA / EM&A Manual has been given in Appendix
C.
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 ER, Contractor, ET
Leader and IEC on 17 February 2011, and additional weekly site inspections were
carried out by the ER, Contractor and ET on 10 and 24 February 2011.
Major findings provided by ET and
those jointly provided by the ET and IEC on 17 February 2011 from the site
inspections are summarised in Table
5.1.
Table 5.1: Summary of Environmental
Site Inspections
|
Date of Inspection |
Major Observations |
Status |
|
10 Feb 2011 |
The new location of the chemical waste store was on
uneven ground. The Contractor is asked to provide a level and stable surface
for this facility as soon as possible. |
The additional containers of chemicals were removed
from the chemical waste store and the provision of drip trays for the other
containers was considered adequate, as observed on 3 Mar 2011. (closed) |
|
17 Feb 2011 |
The Contractor was reminded to provide additional
tarpaulin covering for all excavated C&D material stockpiles. |
Tarpaulin covering was provided for the remaining
excavated C&D material stockpiles, as observed on 3 Mar 2011 (closed) |
|
24 Feb 2011 |
No new observations. |
N/A |
5.2
Site Effluent
Discharge/WPCO Effluent Discharge
An effluent discharge licence under
the Water Pollution Control Ordinance (WPCO, Cap 358) was initially granted by
EPD on 10 March 2008 and was subsequently replaced by another one issued on 8
July 2008. In order to cope with the site condition in late 2008, the
Contractor applied for a second variation of WPCO effluent discharge licence on
10 November 2008 and the revised licence was granted on 5 January 2009.
No effluent discharge sampling was
carried out in this reporting month. It will be followed-up and updated in the
coming EM&A report (March 2011).
6.1
Summary
of Environmental Complaints, Notifications of Summons and Successful
Prosecutions
No environmental complaints have
been received during the reporting month. Appendix
C presents the environmental complaint event
contingency plan of the Project and Table 6.1 presents a statistics 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 |
|||
|
Feb 2011 |
Cumulative |
Feb 2011 |
Cumulative |
Feb 2011 |
Cumulative |
|
0 |
0 |
0 |
0 |
0 |
0 |
No environmental complaint,
notification of summons and prosecution has been received or made against the
Project in this reporting month.
No environmental enquiries were
received during the reporting month.
No unusual events were recorded
during the reporting month.
6.4
Environmental
Exceedance/Non-compliance
No exceedance of Action and Limit
Levels for 1-hour TSP and 24-hour TSP was recorded in the data received for the
reporting month.
Not applicable.
Table 6.2 summarises the total number of exceedances for
air quality recorded during the reporting period. No exceedance was recorded in
the data received for 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 |
16 |
0 |
0% |
0 |
0% |
7.1
Key
Issues and Recommendations for Coming Month
Key issues to be considered in the
forthcoming month (March 2011) include: -
¡
Excavation
for Ground Decontamination Works within contaminated area and uncontaminated
area;
¡
Cement
solidification of the soil contaminated with heavy metal;
¡
Demolition
of Boundary Wall;
¡
Operation
and maintenance of the biopile decontamination system for Biopile No. 1 (for
soil contaminated with hydrocarbon) and Biopile No. 2 (for soil contaminated
with hydrocarbon and heavy metal);
¡
Backfilling
within contaminated area;
¡
Disposal
of the asbestos cement water pipes and related wastes to South East New
Territories (SENT) Landfill at Tseung Kwan O by marine transport; and
¡
Downsizing
and sorting of the inert construction and demolition (C&D) materials by
site crusher.
Based on the above key issues, the
recommended mitigation measures to be implemented include the following: -
¡
Water
spraying during demolition works;
¡
Reduce
drop height during material handling or wall felling;
¡
Covers
for dusty stockpiles and all generated C&D materials as soon as they are
formed or moved;
¡
Haul
road watering and vehicle wheel wash prior to exit; and
¡
All
plant to be maintained to prevent any undue air emissions.
¡
All
plants shall be maintained to prevent any undue noise nuisance; and
¡
Use
quiet plants during breaking of concrete slab and structures and other C&D
materials, whenever possible.
¡
All
wheel wash water shall be diverted to a sediment pit before discharge;
¡
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;
¡
All
ponding water shall be cleared as soon as possible; and
¡
All
water dewatered from contaminated area(s) shall be properly handled and treated
before discharge, and that such discharge should be kept to minimum. Surplus
water arising from dewatering is to be collected on site for re-use where
possible.
¡
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 disposed (with locations) shall
be kept.
¡
Removal,
handling, transportation and disposal of the asbestos containing materials
(ACM) and dioxin/furan contaminated materials (DCM) in line with the Air
Pollution Control Ordinance (APCO, Cap 311) and Waste Disposal Ordinance (WDO,
Cap 354).
¡
The
preferred approach with least environmental impact is to cause minimal
disturbance to the ground conditions, immobilise the contaminated soils where
necessary and make provision for the protection of workers;
¡
During
excavation and treatment of contaminated soil material, skin contact with the soil
and groundwater shall be avoided given the potential for the presence of Total
Petroleum Hydrocarbons (TPH);
¡
Exposure
to dusty material shall also be avoided and dust shall be controlled at source
by damping techniques; and
¡
Bunded
areas shall be provided for the treatment operations on contaminated soil.
Environmental monitoring and audit
was performed in February 2011 during which site works have continued. All
monitoring and audit results in the reporting month were checked and reviewed.
With respect to audit observations,
the Contractor was reminded to provide sufficient dust suppression measures
during dust generating activities (which include stockpiling, handling and
movement of inert C&D materials). Proper bunding measures for containers of
chemicals inside the chemical waste store should also be implemented.
Airborne dust monitoring continued due to
the ongoing dust-generating works during the reporting month. In general, the Contractor has been reasonably
responsive to all required mitigation measures and ET’s recommendations made
during weekly environmental site inspections in this reporting month.
No environmental complaints,
notification of summons or successful prosecutions have been received or made
against this Project in this reporting month.
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 |
179 |
260 |
Action and Limit Levels for 1-hour TSP
|
Monitoring Station |
Action Level (mg/m3) |
Limit Level (mg/m3) |
|
A1 |
345 |
500 |
Table B.1: Event
and 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 |
ET |
IEC |
ER |
CONTRACTOR |
|
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. 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 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 |
|
Appendix C.
Schedule of Mitigation Measures from the EIA/
EM&A Manual and Event Contingency Plan for Environmental Complaints |
Table C.1: Implementation
Schedule of Recommended Mitigation Measures From the EIA
|
No. |
Activity |
Mitigation/EIA Recommendations |
Responsibility for Implementation (1) |
Location/ Duration completion of measures |
Implementation Stage (2) |
Relevant Guidelines/ Legislation (4) |
Implementation Status (3) |
|
1 |
Ash Disposal |
|
|
|
|
|
|
|
I |
Treatment |
Reconfirm extent of contaminated ash deposits by sampling for dioxins and furans. 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 Toxicity Characteristic Leaching Procedure (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. |
CEDD’s Contractor |
KCIP work areas. Duration of the ash removal |
A@ |
1, 10, EIA |
4 |
|
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 |
4 |
|
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 |
4 |
|
2 |
Demolition |
|
|
|
|
|
|
|
A1 |
Non-blasting Methodology |
Demolition by Non-Blasting Methodology Only. All structures and buildings should be demolished and removed prior to demolition of chimneys |
CEDD |
KCIP work areas. Duration of the demolition |
C# |
8 |
4 |
|
A2 |
Waste Management Plan |
A Waste Management Plan shall be submitted to EPD for approval. The Waste Management Plan shall include, but not be limited to, the findings of the Waste Management Paper of the EIA, the types, quantities, disposal methods, timing, and locations of final disposition, responsibilities for implementation and the possible recycling and reuse of wastes generated. |
CEDD and Contractor |
Prior to commencement of the demolition works |
Prior to C# |
1 |
4 |
|
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 |
KCIP work areas. Duration of the demolition |
C |
4 |
4, REC |
|
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 |
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 |
4 |
|
E |
Demolition Techniques |
Selection of non-blasting demolition techniques to minimise noise and vibration. |
CEDD’s Contractor |
As above |
C |
8 |
4 |
|
F |
Plant maintenance |
All plant shall be maintained to prevent any undue noise nuisance. |
CEDD’s Contractor |
As above |
C |
2, 3 |
4 |
|
G |
Wheel wash |
All wheel wash water shall be diverted to a sediment pit. |
CEDD’s Contractor |
As above |
C |
5 |
4 |
|
H |
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 |
4 |
|
I |
Surface water diversion |
All clean surface water shall be diverted around the site. |
CEDD’s Contractor |
As above |
C |
5, 12 |
4 |
|
J |
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 |
4 |
|
K |
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 |
4 |
|
L |
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 |
4 |
|
M |
Material containers |
All empty bags and containers shall be collected for disposal. |
CEDD’s Contractor |
As above |
C |
6,7 |
4 |
|
N |
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 |
4 |
|
O |
Neighbourhood nuisance |
All complaints regarding construction works shall be relayed to the environmental team. |
CEDD’s Contractor |
As above |
C |
1, 6 |
4 |
|
P |
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 |
4 |
|
Q |
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 |
4 |
|
R |
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 |
4 |
|
S |
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 |
4 |
|
T |
Trip-ticket system |
To monitor the disposal of waste at landfills and control fly-tipping, a “trip-ticket” system under Works Bureau Technical Circular (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 |
C |
1, 9 |
4 |
|
3 |
Soil Remediation Phase |
|
|
|
|
|
|
|
U |
B, C, D, F, G, I, J, K, L, M, N, O, P, Q, R, S and T as above |
As above (see W for soil remediation). |
As above |
As above |
R |
As above |
P, REC |
|
V |
De-watering |
Collect and recycle extracted groundwater and leachate by mixing with cement for soil remediation. 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. Any surplus groundwater and leachate requiring disposal to be disposed of under the relevant legislation or treated to meet the standards given in Table 9a of the WPCO TM. |
CEDD’s Contractor |
KCIP work areas. Duration of the soil remediation |
R |
5 |
4 |
|
W |
Immobilisation |
Immobilisation and testing of waste soil shall be carried out according to the relevant regulations and recommendations of the EIA including immobilisation by collection and mixing the contaminated soil material with cement. Pilot mixing and TCLP tests should verify the effectiveness and establish the ratio of cement to soil to the satisfaction of EPD. Reassurance confirmatory sampling shall be carried out to confirm the extent of contamination. Soil waste to be cast in blocks and replaced in the ground. Extracted soils and materials and stabilisation/solidification to be conducted in bunded area to prevent surface run-off. See also item 2(H) above. Final soil decontamination report to be submitted to EPD. |
CEDD’s Contractor |
As above |
R |
1, 10 |
P |
|
4 |
Monitoring and Audit |
To be carried out in accordance with the Schedule in the EM&A Manual. |
CEDD* / Contractor / Resident Site Supervisor (RSS) |
KCIP works areas. During demolition and at end of demolition throughout execution of Remediation Action Plan |
C |
1 |
4 |
Notes: (1) Responsibility for Implementation:
* Normally undertaken by a specialist
monitoring team employed directly by the proponent and audited by the
Independent Checker (Environment).
(2) Implementation Stage:
@ A =
during ash removal (before demolition)
# C =
during construction (i.e. demolition phase)
* R = during soil remediation phase (after
demolition)
(3) Implementation Status:
4 implemented Ï not implemented P partially
implemented REC rectified by Contractor
(REC) partially
rectified by Contractor ! pending Contractor’s rectification action
N/A not applicable
(4) Relevant Guidelines / Legislation
references:
1.
Environmental Impact Assessment
Ordinance Technical Memorandum (EIAO-TM)
2.
Noise Control Ordinance
3.
The ProPECC Note PN2/93
(Construction Noise daytime limits)
4.
Air Pollution Control Ordinance
(APCO, Cap. 311)
5.
Water Pollution Control Ordinance
(WPCO) (Cap. 358)
6.
Waste Disposal Ordinance (WDO, 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 (WBTC) 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 1/94 Construction Site Drainage
Table C.2: 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 |
Notes: ¨ Action
Party
à
Enter
comments/ proposals into appropriate complaint record where applicable
|
Appendix D.
EM&A Schedule |
|
Appendix F.
Calibration Certificates |
|
Appendix G.
Works Programme |
|
Appendix H.
Weather Information from HKO |
This
Appendix presents wind data obtained from the nearest Hong Kong Observatory
(HKO) monitoring station, at Tsing Yi.