1. INTRODUCTION
1.1
Purpose of this Manual
- The purpose of this Environmental
Monitoring and Audit (EM&A) Manual is to guide the setup of an EM&A
programme to ensure compliance with the Reprovisioning of Diamond Hill
Crematorium Environmental Impact Assessment (EIA) study recommendations,
to assess the effectiveness of the recommended mitigation measures and
to identify any further need for additional mitigation measures or remedial
action. This Project involves the demolition of the Diamond Hill Crematorium
(hereafter referred to as Existing Crematorium) as well as to construct
and operate a new crematorium (hereafter referred to as the New Crematorium)
in situ as a replacement.
- This Manual outlines the monitoring
and audit programme to be undertaken this Project. The Manual aims to
provide systematic procedures for monitoring, auditing and minimising
of the environmental impacts associated with the construction, demolition
and operation activities.
- Findings, recommendations
and requirements of the EIA, the technical Memoranda and guidelines of
all environmentally related legislation comprise the environmental standards
and guidelines were used in the preparation of this EM&A Manual.
- This EM&A Manual contains
the followings:
- Duties of the Environmental
Team (ET) Leader, the Independent Checker (Environment) (ICE), Architect’s
Representative (AR) and Contractor, in relation to the Project’s environmental
monitoring and audit requirements during construction and demolition
- Information on the Project organization
and programming of construction activities
- The Project construction, demolition
and operation schedule and the necessary environmental monitoring and audit
programme to track the environmental impacts
- Definition of Action and Limit
levels
- Establishment of event and action
plans
- Requirements for the review
of pollution sources and working procedures in the event of non-compliance
of the Project’s environmental performance criteria
- Environmental auditing procedures
- Requirements for the documentation
of environmental monitoring and audit data, and appropriate reporting procedures
- For the purpose of this Manual,
the “Architect” shall refer to the Architect as defined in the Contract.
The Architect’s Representative (AR), in cases where the Architect’s powers
have been delegated to the AR, shall be assigned in accordance with the
Contract. The ET leader, who shall be responsible for and in charge of
the ET, shall refer to the person delegated the role of executing the
EM&A requirements.
1.2
Objectives of EM&A Program
- The objectives of carrying
out EM&A for the Project are as follows:
- To establish a database of any
short or long term environmental impacts of the Project
- To provide an early indication
if any of the environmental control measures or practices fail to achieve
the acceptable standards
- To monitor the performance of
the environmental mitigation measures of the Project and the effectiveness
of mitigation measures
- To verify the environmental
impacts predicted in the EIA of the Project
- To determine Project compliance
with regulatory requirements, standards and government policies
- To take remedial action if unexpected
problems or unacceptable impacts arise
- To provide data to enable an
environmental audit
1.3
Background of the Project
- The Project site is shown
in Figure 1.1. The Project site is located along Po Kong Village Road
in Diamond Hill, between Hammer Hill Road and Po Leung Lane. To the North
of the Project site is an urn cemetery. The Diamond Hill Columbarium lies
on the Eastern and Western sides of the Project site. The Northern part
of the Project site is higher than the Southern part, making it sloping
in nature.
- The tentative construction
and demolition programme of the Project will be divided into two phases:
Phase I (from September 2004 to February 2006) and Phase II (from October
2006 to November 2007). Details of the two Phases of works are as follows:
Phase I
- Demolition of facilities in
Existing Crematorium in the southern side of the Project site, including
- Existing sitting out area
- Garden of remembrance
- Existing building structure,
including CLP secondary substation, toilets, pavilion and retaining walls
- Construction of the New Crematorium
main facilities, including:
- One (1) cremator plant room
housing six (6) cremators
- Three (3) fuel tanks (with total
capacity of 34,000 L)
- Two (2) service halls (each
can hold 120 people)
- One (1) pulverizing room
- One (1) mortuary
- One (1) office
- Toilets for public
- Ancillary service rooms including
battery fork lift, transformer and switch room, emergency generator room
and joss burners
- Two (2) automatic transportation
systems for coffins and part of an underground service tunnel for coffin
circulation
- Vehicular loading bay for coffin
van, coach
- Landscape area
- Dangerous goods store
- Installation of temporary CLP
electricity transformer at Phase II boundary
Phase II
- Demolition of Existing Crematorium
main facilities, including:
- Two (2) service halls
- One (1) cremation room with
six (6) cremators
- One (1) transformer room
- One (1) underground oil fuel
storage tank (9,092 L)
- One (1) mortuary
- One (1) machine room
- One (1) general store plus water
tank
- One (1) dangerous goods store
- One (1) chimney (10 m in height)
- Construction of the rest of
the New Crematorium, including:
- Two (2) service halls (each
can hold 120 people)
- Two (2) automatic transportation
systems for coffins and part of an underground service tunnel for coffin
circulation
- Vehicular loading bay for coffin
van, coach etc.
- Landscape area
- The columbarium
next to the Project site will remain untouched throughout both Phase I and
Phase II.
- To handle the cremation
demand, operation of the Existing Crematorium will be maintained until the
full operation of the New Crematorium main facilities provided under Phase
I of the Project. However, to prevent deterioration of environmental performance,
in particular air quality, measures are recommended in Section 4
so as to minimize any cumulative impact.
- To maintain continuous
electricity supply, a temporary electricity transformer will be installed
during Phase I (at Phase II site boundary) before the existing CLP secondary
substation is decommissioned. As polychlorinated biphenyls (PCBs) containing
materials will not be utilized, no land contamination issues related to
the installation, operation, decommission and demolition is expected.
- The Architectural
Services Department (Arch SD), being the works agent for implementing the
project, will be responsible for the demolition of the Existing Crematorium
and for constructing the New Crematorium. Upon completion of the construction
and demolition works, Food and Environmental Hygiene Department (FEHD) will
be responsible for operation of the New Crematorium.
1.4 Project
Time Table
- The proposed programme
of the Project is shown in Appendix A.
1.5 Structure
of this Manual
- Following this
introductory section, this Manual is set out as follows:
Section 2
|
describes
the organization structure for managing environmental matters of this
Project
|
Section 3
|
describes
key environmental issues of this Project; the implementation schedule
for mitigation and management measures
|
Sections
4 to 6
|
describe
details of baseline and impact monitoring of air quality, noise and
water quality; Action and Limit levels, and contingency procedures
|
Section
7 to 10
|
describes
the proper management practices for waste management, land contamination,
visual and landscape aspects as well as hazard to life
|
Section 11
|
describes
the scope, approach and frequency of site auditing
|
Section 12
|
describes
the reporting requirements, data keeping requirements, electronic reporting
of EM&A information as well as the procedures of the issue of Notification
of Exceedances to relevant parties in case exceedance in the measurement
result is recorded
|
2. PROJECT
ORGANIZATION
- Figure 2.1 presents the organization
structure of the Project, identifies key members of the Project Team with
environmental responsibilities, and illustrates their lines of communication.
Responsibilities of the key Project Team members are described below.
2.2 Architect’s
Representative (AR)
- The AR shall:
- Supervise the Contractor’s activities
and ensure that the requirements in the EM&A Manual are fully complied
with
- Inform the Contractor when action
is required to reduce impacts in accordance with the Event and Action Plans
- Employ an Independent Checker
(Environment) (ICE) to audit the results of the EM&A works carried out
by the ET
- Adhere to the procedures for
carrying out complaint investigation in accordance with Section 11.3
of this EM&A Manual
2.3 The
Contractor
- The Contractor shall:
- Employ an Environmental Team
(ET) to undertake monitoring, laboratory analysis and reporting of environmental
monitoring and audit
- Provide assistance to ET in
carrying out monitoring
- Submit proposals on mitigation
measures in case of exceedances of Action and Limit levels in accordance
with the Event and Action Plan
- Implement measures to reduce
impact where Action and Limit levels are exceeded
- Adhere to the procedures for
carrying out complaint investigation in accordance with Section 11.3
of this EM&A Manual
2.4 Environmental
Team (ET)
- The ET shall:
- Monitor various environmental
parameters as required in the EM&A Manual;
- Analyse the EM&A data and
review the success of EM&A programme to cost-effectively confirm the
adequacy of mitigation measures implemented and the validity of the EIA
predictions and to identify any adverse environmental impacts arising
- Carry out site inspection to
investigate and audit the Contractor’s site practice, equipment and work
methodologies with respect to pollution control and environmental mitigation,
and effect proactive action to pre-empt problems
- Audit and prepare audit reports
on the environmental monitoring data and site environmental conditions
- Report on the EM&A results
to the ICE, Contractor, the AR and Environmental Protection Department (EPD)
or its delegated representative
- Recommend suitable mitigation
measures to the Contractor in the case of exceedance of Action and Limit
levels in accordance with the Event and Action Plans
- Adhere to the procedures for
carrying out complaint investigation in accordance with Section 11.3
of this EM&A Manual
2.5 Independent
Checker (Environment) (ICE)
- The ICE shall:
- Review the EM&A works performed
by the ET (at not less than monthly intervals)
- Audit the monitoring activities
and results (at not less than monthly intervals)
- Audit contaminated soil and
materials remediation works to be carried out during demolition
- Report the audit results to
the AR and EPD in parallel
- Review the EM&A reports
(monthly and quarterly summary reports) submitted by the ET
- Review the proposal on mitigation
measures submitted by the Contractor in accordance with the Event and Action
Plans
- Adhere to the procedures for
carrying out complaint investigation in accordance with Section 11.3
of this EM&A Manual
- Sufficient and suitably qualified
professional and technical staff shall be employed by the respective parties
to ensure full compliance with their duties and responsibilities, as required
under the EM&A programme for the Project.
3.
KEY ENVIRONMENTAL ISSUES
- The key environmental issues
identified by the EIA study that are pertinent to the Project are described
below. These issues are to be monitored and/or audited throughout the
construction, demolition and operation period. The implementation schedule
of mitigation measures is shown in Appendix B.
3.2 Air
Quality
- The EIA Study has determined
that with effective implementation of the appropriate mitigation measures,
the air quality impacts at all Air Sensitive Receivers (ASRs) can comply
with established air quality acceptable criteria. Monitoring and audit
are required in construction, demolition and operation stages.
3.3 Noise
- The EIA Study has determined
that effective implementation of the appropriate mitigation measures can
reduce noise levels at all Noise Sensitive Receivers (NSRs) to within
established limits. Monitoring and audit are required in construction
and demolition stages.
3.4 Land
Contamination
- The site investigation carried
out under the Contamination Assessment Plan (CAP) endorsed by EPD revealed
that soil remediation at locations S3 and S5 is required. Relevant remediation
methodology is recommended in Contamination Assessment Report and Remediation
Action Plan (CAP/RAP). Supplementary site investigation of soil at CLP
secondary substation during Phase I of the works is recommended to assess
whether there is any contamination of polychlorinated biphenyls (PCB)
or total petroleum hydrocarbon (TPH) (diesel range).
- In addition, confirmatory
site investigation is also recommended for:
- Soil samples at locations S1
to S6 during Phase II for dioxin, heavy metals and polyaromatic hydrocarbons
(PAH)
- Soil samples underneath underground
fuel tank during Phase II (if visual or olfactory evidence of fuel contamination
is identified) for TPH.
- Site investigations are required
during demolition stage, while audits are required. The current results
of the land contamination assessment showed that with effective implementation
of appropriate mitigation measures, impact form handling contaminated
soil would not become unacceptable.
3.5 Waste
Management
- Wastes generated from this
Project during construction and demolition works include excavated material,
construction and demolition waste, contaminated materials (including asbestos
containing materials (ACM), dioxin containing materials (DCM), heavy metal
containing materials (HMCM), polyaromatic hydrocarbons containing materials
(PAHCM), total petroleum hydrocarbon containing materials (TPHCM) and
polychlorinated biphenyls containing materials (PCBCM)), chemical waste
and general refuse. Additional site investigation at cremator room is
proposed and relevant mitigation measures were recommended. Audit is required
during construction and demolition stages. The EIA Study has determined
that with effective implementation of the appropriate mitigation measures,
impact from these wastes would not become unacceptable.
3.6 Water
Quality
- The EIA Study has determined
that with effective implementation of the appropriate mitigation measures,
water quality near the Project site can be maintained within established
limits. No monitoring and audit work is required.
3.7 Landscape
and Visual Issues
- The EIA Study has determined
that with effective implementation of the appropriate mitigation measures,
the landscape and visual impacts would not become unacceptable. Monitoring
and audit works are required during construction stage as well as during
the first year of operation stage.
3.8 Hazard
to Life
- The EIA Study has determined
that with effective implementation of the safety/precautionary measures,
the hazard level will be kept to minimal. No monitoring and audit work
is required.
4. AIR
QUALITY MONITORING
Monitoring During
Construction and Demolition Phases
4.1 Monitoring
Parameters and Locations
- In this Project, environmental
impacts are expected from construction and demolition activities and representative
monitoring locations are to be established in the vicinity.
- Monitoring and audit of the
Total Suspended Particulates (TSP) levels shall be carried out by the
ET during construction and demolition phases and ensure that any deteriorating
air quality can be readily detected and timely action taken to rectify
the situation.
- TSP levels of in 1-hr and
24-hr shall be measured to indicate the impacts of construction dust on
air quality. TSP levels shall be measured by following the standard high
volume sampling (HVS) method as set out in the Title 40 of the Code of
Federal Regulations, Chapter 1 (Part 50), Appendix B.
- Upon approval from the AR/ICE,
1-hr TSP can be measured by direct reading methods which are capable of
producing comparable results as that by the high volume sampling method,
to indicate short events impacts.
- All relevant data including
temperature, pressure, weather conditions, elapsed-time meter reading
for the start and stop of the sampler, identification and weight of the
filter paper, and other special phenomena and work progress of the construction
site etc. shall be recorded in detail. The sample monitoring field log
is shown in Appendix D.
- The location is listed in
Table 4.1 below.
Table
4.1 Air Quality Monitoring Locations
ASR No.
|
Station
I. D.
|
Description
|
Air Quality
Monitoring and Methodology
|
A8
|
TSP-1
|
Po Leung
Kok Grandmont Primary School, near the north tip of the construction
site
|
Monitoring of 1-hour
and 24-hour TSP levels in accordance with 40 CFR 50 App B.
|
A17
|
TSP-2
|
Staff
Quarters of Diamond Hill Crematorium, near the south tip of the
construction site
|
- The said monitoring location
is shown in Figure 4.1. The status and locations of dust sensitive receivers
may change after issuing this manual. In this event, the ET Leader shall
propose updated monitoring locations and seek approval from AR/ICE and
agreement from EPD on the proposal.
- The following criteria, as
far as practicable, should be followed when alternative monitoring locations
are proposed, in that position should be:
- At the site boundary or such
locations close to the major dust emission source
- Close to the sensitive receivers
- Take into account the prevailing
meteorological conditions
- The ET Leader shall agree
with the AR/ICE on the position of the HVS for installation of the monitoring
equipment. The following points shall be considered when positioning the
samplers.
- A horizontal platform with appropriate
support to secure the samplers against gusty wind should be provided
- No two samplers should be placed
less than 2 metre apart
- The distance between the sampler
and an obstacle, such as buildings, must be at least twice the height that
the obstacle protrudes above the sampler
- A minimum of 2 metres of separation
from any supporting structure, measured horizontally is required
- No furnace or incinerator flue
is nearby
- Airflow around the sampler is
unrestricted
- The sampler is more than 20
metres from the dripline
- Any wire fence and gate, to
protect the sampler, should not cause any obstruction during monitoring
- Permission must be obtained
to set up the samplers and to obtain access to the monitoring stations
- A secured supply of electricity
is needed to operate the sampler
4.2 Baseline
Monitoring
Baseline Monitoring
for Construction/Impact
- Baseline monitoring at all
of the designated monitoring locations for at least 14 consecutive days
shall be conducted prior to the commencement of the construction/demolition
works to obtain daily 24-hr TSP samples. 1-hr sampling shall also be conducted
at least three times per day while the highest dust impact is expected.
A schedule on the baseline monitoring shall be submitted to AR/ICE for
approval before the monitoring starts.
- During the baseline monitoring,
there should not be any construction or dust generation activities in
the vicinity of the monitoring stations.
- In case the baseline monitoring
cannot be carried out at the designated monitoring locations during the
baseline monitoring period, the ET Leader shall carry out the alternative
locations which can effectively represent the baseline conditions at the
impact monitoring locations. The alternative baseline monitoring locations
shall be approved by the AR/ICE and agreed with EPD.
- In exceptional case, when
insufficient baseline monitoring data or questionable results are obtained,
the ET Leader shall liaise with EPD to agree on an approved set of data
to be used as a baseline reference and submit to AR/ICE for approval.
- Ambient conditions may vary
seasonally and shall be reviewed at six month’s intervals. If the ET Leader
considers that the ambient conditions have been changed and a repeat of
the baseline monitoring is required to be carried out for obtaining the
updated baseline levels, the monitoring shall be carried out at times
when the Contractor’s activities are not generating dust, at least in
the proximity of the monitoring stations. Should change in ambient conditions
be determined, the baseline levels and, in turn, the air quality criteria,
should be revised. The revised baseline levels and air quality criteria
should be agreed with ICE and EPD.
4.3 Air
Quality Action and Limit Levels
- Air quality Action Levels
are to be established from baseline monitoring results. Subsequent impact
monitoring results are to be compared against the Action and Limit Levels.
Table 4.2 presents the methodology for determining Action Levels. The
Limit Levels are also listed in this Table.
- Exceedance of Action Level
during construction impact monitoring would indicate that environmental
quality is deteriorating. Exceedance of Limit Level during construction
impact monitoring would indicate that environmental quality has become
unacceptable. Procedures for responding to exceedance of Action and Limit
levels are described in Sections 4.4 and 12.9.
Table 4.2 Action
and Limit Levels for Air Quality
Parameter
|
Action
Level
|
Limit Level
|
24-hr. TSP Level in m
g/m3
|
For baseline
level £ 200 m g/m3, Action level = (average of
baseline level plus 30% + Limit level)/2
For baseline
level > 200 m g/m3, Action level = Limit Level
|
260
|
1-hr. TSP Level in m
g/m3
|
For baseline
level £ 384 m g/m3, Action level = (average of
baseline level plus 30% + Limit level)/2
For baseline
level > 384 m g/m3, Action level = Limit Level
|
500
|
4.4 Impact
Monitoring
- The ET shall conduct impact
monitoring during the course of the construction and demolition works.
Regular monitoring is to be performed once every six days. Regular monitoring
consists of one set of 24-hr TSP and three sets of 1-hr TSP sampling on
a six-day cycle basis. The specific time to start and stop the 24-hr TSP
monitoring shall be clearly defined for each location and be strictly
followed by the operator.
- Weather monitoring of wind
speed and wind direction during the course of air quality monitoring shall
be carried out by setting up weather station monitor at the vicinity of
the site. The location of the weather station monitor is proposed to be
at the site office in the future, which is to be approved from the AR
and agreed from ICE.
- In case of non-compliance
with the air quality criteria, more frequent monitoring exercise, as specified
in the Event/Action Plan in Appendix C, shall be conducted within 24 hours
after the result is obtained. This additional monitoring shall be continued
until the excessive dust emission or the deterioration in air quality
is rectified.
4.5 Reporting
- Monitoring data (including
the monitoring field logs, measurement raw data and calculations) is to
be reviewed by the designated personnel appointed by the ET Leader. The
duly checked monitoring results are to be provided by the ET to the Contractor
via fax or e-mail for submission to Arch SD within seven working days
after the completion of measurement. In case of the receipt of measurement
exceedances, the ET Leader shall issue the Notification of Exceedances
in accordance with the requirements as shown in Section 12.9 of
the Manual. Monthly EM&A reports prepared by ET shall be submitted
to Arch SD within five working days of the end of the reporting month.
The details of the EM&A report are shown in Section 12 of this
Manual.
4.6 Monitoring
Methodology
- 24-hr TSP level is to be measured
in accordance with the standard high volume sampling method as set out
in Title 40 of the Code of Federal Regulations (40CFR), Chapter 1 (Part
50), Appendix B. This method involves the drawing of air at a controlled
rate into a high volume sampler (HVS) fitted with a pre-conditioned and
pre-weighted filter paper of size 8” x 10”. After sampling for 24 hours,
the filter paper with retained particles is to be folded in half lengthwise,
placed in a labelled plastic bag and returned to the ET’s laboratory for
drying in a desiccator before being weighed on an electronic balance with
accuracy to 0.1 mg. The 24-hr TSP levels are then calculated from the
ratio of the mass of particles retained on the filter paper to the total
volume of air sampled. All the collected samples shall be kept in good
condition for 6 months before disposal.
- 1-hr TSP level is to be measured
with a hand-held real time aerosol monitor subject to the approval of
ICE. This meter uses optical sensors to analyze the incoming air stream,
providing real time readout of particulate concentrations.
- The wind sensors for wind
speed and wind direction monitoring shall be installed at an elevated
level so that they are clear of obstructions or turbulence caused by the
buildings. The wind data shall be captured by a data logger and to be
downloaded for processing at least once per month. In exceptional situations,
the ET Leader may propose alternative methods to obtain representative
wind data upon approval from the AR and agreement from the AR and agreement
from the ICE.
- Field information such as
general meteorological conditions and any significant adjacent dust producing
sources at each monitoring location are to be recorded during monitoring.
- Monitoring field log sheets
for 1-hr and 24-hr TSP are documented in Appendix D.
4.7 Monitoring
Equipment
- TSP levels of 1-hr and 24-hr
shall be measured with high volume samplers conforming to the standard
high volume sampling method as set out in Title 40 of the Code of Federal
Regulations (40CFR), Chapter 1 (Part 50), Appendix B.
- If the ET Leader proposes
to use direct-reading dust meter to measure 1-hr TSP levels, he shall
submit sufficient information to the AR/ICE to prove that the instrument
is capable for achieving a comparable result with that of the HVS to confirm
that it may be used for the 1-hr sampling. The instrument should also
be calibrated regularly, and the 1-hr sampling shall be determined periodically
by HVS to check the validity and accuracy of the results measured by a
direct reading method.
- Wind data monitoring equipment
shall also be provided and set up at strategic locations for logging wind
speed and wind direction near the dust monitoring locations. The equipment
installation location shall be proposed by the ET Leader and agreed with
AR/ICE. For installation and operation of wind data monitoring equipment,
the following points shall be observed:
- The wind sensors should be installed
on masts at an elevated level 10 m above ground so that they are clear of
obstructions or turbulence caused by the buildings
- The wind data should be captured
by a data logger and to be downloaded for processing at least once a month
- The wind data monitoring equipment
should be re-calibrated at least once every six months
- Wind direction should be divided
into 16 sectors of 22.5 degrees each
- In exceptional situations,
the ET Leader may propose alternative methods to obtain representative
wind data upon approval from the AR and agreement from EPD.
- Details of the recommended
monitoring equipment are given in Table 4.3.
Table 4.3 Recommended
Air Quality Monitoring Equipment
Parameter
|
Equipment Model
|
24-hr TSP Measurement
|
GRASEBY GMWS-2310-105
High Volume Air Sampling System
|
1-hr TSP Measurement
|
GRASEBY GMWS-2310-105
High Volume Air Sampling System, or portable dust meter, subject to the
approval AR/ICE
|
4.8 Laboratory
Measurement / Analysis
- A clean laboratory with constant
temperature and humidity control, and equipped with necessary measuring
and conditioning instruments to handle the dust samples collected, shall
be available for sample analysis, and equipment calibration and maintenance.
The laboratory is preferably be HOKLAS accredited.
- If a site laboratory is set
up or a non-HOKLAS accredited laboratory for TSP is hired for carrying
out the laboratory analysis, the laboratory equipment shall be approved
by the ICE/AR and the measurement procedures shall be witnessed by the
ICE/AR. The ET Leader shall provide the AR with one copy of Title 40 of
the Code of Federal Regulations, Chapter 1 (Part 50), Appendix B for his
reference.
- Filter paper of size 8” x
10” shall be labelled before sampling. It shall be a clean filter paper
with no pin holes, and shall be conditioned in a humidity controlled chamber
for over 24-hr and be pre-weighted before use of the sampling.
- After sampling, the filter
paper, loaded with dust, shall be kept in a clean and tightly sealed plastic
bag. The filter paper shall then be returned to the laboratory for reconditioning
in the humidity controlled chamber followed by accurate weighing by an
electronic balance with a readout down to 0.1 mg. The balance shall be
regularly calibrated against a traceable standard.
- All the collected samples
shall be kept in good condition for six months before disposal.
4.9 Equipment
Calibration
- High volume samplers are to
be calibrated with orifice calibrator. Five-point calibration is to be
carried out on a bi-monthly basis, after the replacement of carbon brush
or after installation. Orifice calibrator shall be calibrated with recognized
primary standard at annual basis. For the handheld real-time aerosol monitor,
calibration is to be conducted on a monthly basis or in accordance with
the frequency as stipulated in the manual provided by the manufacturer,
as appropriate. The electronic balance used for the weighing of filter
paper is to be calibrated regularly with a traceable weight standard.
The wind data monitoring equipment shall be re-calibrated once every six
months. Calibration records maintained by the ET are to be included in
the monthly EM&A reports and available for inspection.
4.10 Operation
Monitoring
- Crematorium is defined as
Specified Process under the Air Pollution Control Ordinance, a Specified
Process (SP) Licence has to be obtained from EPD. Furthermore, the operation
of the New Crematorium should comply with the requirements of “A Guidance
Note on the Best Practicable Means for Incinerators (Crematoria)”,
BPM 12/2, EPD. The operator shall carry out regular monitoring of chimney
emission in accordance with the requirements of BPM and the future SP
Licence. The air pollution monitoring programme shall be determined according
to the requirements of BPM and the SP License with the approval of ICE
and EPD.
4.11 Mitigation
Measures to Reduce Adverse Environmental Impacts
- According to the EIA Report
on the Project, a number of mitigation measures are required for the construction,
demolition and operations phases. The recommended mitigation measures
are summarized as follows:
Construction
and Demolition Works of Phase I & II
- The fugitive dust emission
would be the most significant impact to the air quality during the Phase
I and Phase II Construction and Demolition Works. According to the Air
Pollution Control (Construction Dust) Regulation, the following mitigation
measures should be implemented:
- Erect a site barrier with the
height of no less than 2.4 m to enclose the construction site
- Apply frequent water spraying
to ensure the surface of the construction site sufficiently wet to reduce
fugitive dust due to wind erosion and transportation on unpaved haul road
- Cover up stockpiles of fill
material and dusty material
- Install a vehicle-cleaning system
at the main entrance of the construction site to clean up the vehicles before
leaving the site
Commissioning
and Operation of Phase I Crematorium
- The proposed new cremators
would be designed with advanced technology in combustion as well as equipped
with appropriate air pollution control system, the chimney emissions would
not impose significant impact on the nearby environment. The most important
mitigation measures would be ensuring proper operation and maintenance
of the New Crematorium and the air pollution control system. In case of
failure of any part of the cremator system, suspend the operation and
rectify the failure as soon as possible.
- There would be no more than
six cremators (existing or new) in simultaneous operation during the testing
and commissioning of the new cremator system in order to avoid imposing
additional air pollutants to the atmosphere.
5. NOISE
MONITORING
5.1 Monitoring
Parameters and Locations
- In this Project, environmental
impacts are expected from construction and demolition activities at the
site areas. Noise mitigation and preventive measures are recommended in
the EIA report to reduce potential impacts to the acceptable limits. This
section addressed the monitoring parameters as well as the representative
monitoring locations selected for baseline measurement and evaluation
of the performance of the proposed measures.
- The construction and demolition
noise shall be measured in terms of the A-weighted equivalent continuous
sound pressure level (LAeq). Leq(30min) shall be
used as the monitoring parameters for the time period between 0700 – 1900
hours on normal weekdays. For all other time periods, Leq(5min)
shall be employed for comparison with the Noise Control Ordinance (NCO)
criteria.
- According to the EIA report,
three (3) representative Noise Sensitive Receivers (NSR) in vicinity to
the project site have been identified as the possible location for conducting
noise monitoring of the baseline during the construction and demolition
works. The location is listed in Table 5.1 below.
Table
5.1 Noise Sensitive Receiver Identified as Possible Location for Noise
Monitoring
Monitoring
Location
|
Monitoring
Parameters
|
Description
|
Frequency
|
Measurement
Condition
|
SR 3
|
LAeq
|
(New school
under construction)
Po Kong
Village Road School Village
|
Once every
week during the construction and demolition period
|
Facade
measurement facing the project site
|
SR 4
|
LAeq
|
Po Leung
Kuk Grandmont Primary School
|
Once every
week during the construction and demolition period
|
Facade
measurement facing the project site
|
SR 6
|
LAeq
|
Staff
Quarter for Diamond Hill Crematorium, Tsz Wan Shan
|
Once every
week during the construction and demolition period
|
Facade
measurement facing the project site
|
- The said monitoring locations
are shown in Figure 5.1.
- The status and locations of
noise sensitive receivers may change after issuing this Manual. In this
event, the ET Leader shall propose updated monitoring locations and seek
approval from AR/ICE and agreement from EPD for the proposal.
- When alternative monitoring
locations are proposed, the monitoring locations should be chosen based
on the following criteria in that they should be:
- At locations close to the major
site activities which are likely to have noise impacts
- Close to the noise sensitive
receivers
- For monitoring locations located
in the vicinity of the sensitive receivers, care should be taken to cause
minimal disturbance to the occupants during monitoring
- The monitoring location shall
normally be at point 1 m from the exterior of the sensitive receiver’s
building facade and be at a position 1.2 m above the ground. If there
is problem with access to the normal monitoring location, an alternative
position may be chosen, and a correction to the measurements shall be
made. For reference, a correction of +3 dB(A) shall be made to the free-field
measurements. The ET Leader shall agree with the AR/ICE on the monitoring
positions and the corrections adopted. Once the positions for the monitoring
stations are chosen, the baseline monitoring and the impact monitoring
shall be carried out at the same positions.
5.2 Baseline
Monitoring
- Prior to the commencement
of the site works of the Project, baseline monitoring shall be conducted
for seven consecutive days at each monitoring location to determine pre-construction/demolition
ambient noise level in terms of A-weighted equivalent continuous sound
pressure levels (LAeq) measured in decibels (dB). Continuous
LAeq(30min) for hours between 0700 – 1900 hrs shall be taken.
From the measurements, statistical sound levels L10 and L90
respectively are to be derived. A schedule on the baseline monitoring
shall be submitted to AR/ICE for approval before the monitoring starts.
- There shall not be any construction/demolition
activities in the vicinity of the stations during the baseline monitoring.
- In exceptional cases, when
insufficient baseline monitoring data or questionable results are obtained,
the ET Leader shall liaise with EPD to agree on an appropriate set of
data to be used as a baseline reference and submit this to the AR/ICE
for their approval.
5.3 Noise
Action and Limit Levels
- The applicable noise Action
and Limit Levels for all monitoring locations in this Project are listed
in Table 5.2.
- Exceedance of the Action Levels
during the construction and demolition phases would indicate that environmental
quality is deteriorating. Exceedance of the Limit Levels during the construction
and demolition phases would indicate that environmental quality has become
unacceptable. Procedures for responding to exceedance of Action and Limit
levels are described in Section 12.9. Necessary mitigation measures
are shown in Section 5.9.
Table 5.2 Noise
Action and Limit Levels
Time Period
|
Action Level
|
Limit Level
|
0700 - 1900
hours on weekdays
|
When one
documented complaint is received
|
75 dB(A)
for Residential Premises;
70 dB(A)
for Schools(1)
|
Note: (1) Reduced to
65 dB(A) during school examination periods
5.4 Impact
Monitoring
- The ET shall conduct impact
monitoring during the course of the construction and demolition works.
Regular monitoring shall be performed once every week. For monitoring
of construction/demolition works undertaken between 0700 - 1900 hours,
Monday to Saturday, six sets of consecutive 5-minute noise measurements
in terms of LAeq (as six consecutive LAeq, 5 min
readings) levels are to be taken . From the measurements, two statistical
sound levels L10 and L90 are to be derived respectively.
Considering the close vicinity of the schools, noise monitoring for these
nearby school premises during the examination periods shall be conducted.
The ET shall liaise with the school’s personnel and the Examination Authority
to ascertain the exact dates and times of all examination period during
the course of the Project. In addition, the ET shall note that general
construction or demolition works carried out within the restricted hours
is controlled by Construction Noise Permit (CNP) system under the Noise
Control Ordinance.
- In case of non-compliance
with the construction criteria, more frequent monitoring as specified
in the Event/Action Plan in Appendix C shall be carried out. This additional
monitoring shall be continued until the recorded noise levels are rectified
or proved to be irrelevant to the construction/demolition activities.
5.5 Reporting
- Monitoring data (including
the monitoring field logs, measurement raw data and calculations) is to
be reviewed by the designated personnel appointed by the ET Leader. The
duly checked monitoring results are to be provided by the ET to the Contractor
via fax or e-mail for submission to Arch SD within one working day after
the completion of measurement. In case of the receipt of measurement exceedances,
the ET Leader shall issue the Notification of Exceedances in accordance
with the requirements as shown in Section 12.9 of the Manual. Monthly
EM&A reports prepared by ET shall be submitted to Arch SD within five
working days of the end of the reporting month. The details of the EM&A
report are shown in Section 12 of this Manual.
5.6 Monitoring
Methodology
- Impact monitoring shall be
carried out at the designated monitoring stations during construction
and demolition works of the Project. The regular monitoring frequency
of each station on a basis of once every week when noise-generating activities
are underway is as follows:
- One set of LAeq (30min)
as six consecutive LAeq (5min) between 0700 – 1900 hours on normal
weekdays
- Noise measurement shall be
carried out at the assessment point located under facade conditions. Field
information such as general meteorological conditions and any dominant
noise sources at each monitoring location are to be recorded during monitoring.
Wind speed measurements are to be taken with a portable wind speed meter
during monitoring. Noise measurement is not to be conducted under a steady
wind exceeding 5m/s or gust exceeding 10 m/s. Noise monitoring shall not
be conducted in the presence of fog and rain as well.
- In case of non-compliance
with the construction noise criteria, more frequent monitoring as specified
in the Event/Action Plan in Appendix C shall be carried out. This additional
monitoring shall be continued until the noise problems levels are rectified
or proved to be irrelevant to the construction activities.
- Monitoring field log sheet
for noise is documented in Appendix D.
5.7 Monitoring
Equipment
- As referred to in the Technical
Memorandum (TM) issued under the NCO, sound level meters (SLMs) are to
comply with specifications of the International Electrical Commission
Publication 651:1979 (Type 1) and 804:1995 (Type 1). Wind shield is to
be fitted on the monitor during use.
- Details of the recommended
monitoring equipment are given in Table 5.3.
Table
5.3 Noise Monitoring Equipment
Equipment
Function
|
Equipment
|
Noise
Level Measurement
|
RION
Precision Integrating Sound Level Meter NL-14 or equivalent
|
Calibration
of Sound Level Meter
|
RION
NC-73 Sound Level Calibrator or equivalent
|
Wind
Speed Measurement
|
SPER
SCIENTIFIC Anemometer 840003 or equivalent
|
- The ET Leader shall be responsible
for the provision of the monitoring equipment. He shall ensure that sufficient
noise monitoring equipment and associated instrumentation are available
for carrying out the baseline monitoring, regular impact monitoring and
ad hoc monitoring as necessary. All the equipment and associated instrumentation
shall be clearly labelled.
5.8 Equipment
Calibration
- Before and after each measurement,
the reading of SLM is to be checked with the acoustic calibrator and the
measurements can only be accepted as valid if the calibration levels from
before and after the noise measurement agree to within 1.0 dB. Also, calibrations
of the SLM and acoustic calibrator are to be carried out annually. Calibration
records maintained by the ET are to be included in the monthly EM&A
Reports and available for inspection.
5.9 Noise
Mitigation Measures for Construction and Demolition Works
- The predicted noise levels
in the EIA report show that both Phase I and II construction and demolition
works would give rise to adverse daytime noise impacts to some of the
NSRs, practicable mitigation measures to alleviate noise impact are required
and outlined below.
Selection
of Quiet Plant
- Quiet plant is defined as
PME with a sound power level lower than that specified in GW-TM. Examples
of quiet plant can be referred to those listed in British Standard BS5228.
Various items of silenced plant are available in Hong Kong. However, the
Noise Control Authority, when processing a CNP application, would refer
to the noise levels stipulated in the relevant TM unless the noise emission
of the claimed quiet plant can be validated by certificate or demonstration.
- Since the use of quiet plant
is generally considered to be one of the most effective ways of alleviating
construction/ demolition noise, this control measures is recommended as
the first level mitigation (Mitigation 1) for the construction/ demolition
works.
Use of
Movable (Mobile) Barriers
- Where practicable, movable
(mobile) barriers can be used to screen NSRs from particular items of
plant or noisy operations. Movable barriers of 3 to 5 m height with a
small cantilevered upper portion and skid footing can be located within
a few metres from a stationary plant (e.g. generator, compressor, etc.)
and within about 5 m for a mobile equipment (e.g. breakers, excavator,
etc.), such that the line of sight to the NSRs is blocked by the barriers.
It would be possible for the Contractor to provide purpose-built noise
barriers or screens constructed of appropriate material with a minimum
superficial density of 15 kg/m2 located close to the operating
equipment.
- For those activities which
still potentially affect the NSRs after applying the quiet plant, the
use of movable (mobile) noise barriers on the construction equipment is
recommended as the second level mitigation (Mitigation 2). Such mitigation
should be applied to the site activities that are in close proximity to
NSRs, specifically to SR3 (the new school), SR4 (Po Leung Kuk Grandmont
Primary School) and SR6 (Staff Quarter for Diamond Hill Crematorium) during
the site formation works of Phase I and II and demolition works in Phase
II.
Good Site
Practice
- Good site practice and noise
management can be readily applied and achieve additional reductions in
the construction noise emissions, which include:
- Only well-maintained plant should
be operated on site and plant should be regularly serviced during the construction
works
- Plant that is used intermittently,
should be turned off or throttled down when not in active use
- Plant that is known to emit
noise strongly in one direction should be oriented to face away from NSRs
- Silencers, mufflers and enclosures
for plant should be used where possible and maintained adequately throughout
the works
- Where possible mobile plant
should be sited away from NSRs
- Stockpiles of excavated materials
and other structures such as site buildings should be used effectively to
screen noise from the works
6. LAND
CONTAMINATION
6.1 Introduction
- Desk-top review and site walkover
survey carried out during the EIA study have identified potential locations
of contaminated land. No areas of extensive contamination were found,
with the main areas of concern being the fuel storage tank, dangerous
goods store, CLP secondary substation, cremators and former crematorium.
- The CAP has been submitted
and endorsed by EPD and the site investigation was carried out in March
2003. Subsequent laboratory analysis was completed and contamination of
lead and tin was found in locations S3 and S5. The results of site investigation
is reported in Contaminated Assessment Report (CAR) and relevant remediation
measures were recommended in Remediation Action Plan (RAP) and listed
below.
- All remediation actions as
recommended in the RAP shall be fully implemented. No work on the identified
potentially contaminated sites shall be carried out unless and until the
RAP has been approved by the EPD.
6.2 Proposed
Remediation Action Plan
Extent of Contamination
- The assessment criteria for
certain metals were exceeded in 2 surface samples, taken from S3 (lead
and tin) and S5 (tin only).
- In accordance with ProPECC
Note PN 3/94, remedial works are required in the areas where contamination
has been identified.
- The remaining samples showed
no evidence of metal or organic contamination, suggesting that the two
samples where contamination was present represent isolated hot-spots.
It should be noted that the concentrations of lead and tin in these two
samples, whilst exceeding the Dutch B Level, are below the Dutch C Level,
and are therefore not indicative of severe contamination.
- It has been assumed that the
contamination observed at S3 and S5 extends to a depth of 0.5m below surface,
and within a radius of 5m from each location. The total volume of affected
soil is therefore estimated at 0.5 x 5 x 5 x 3.14 = approximately 40 m3
in each location, giving a total of 80 m3 for the two locations.
Removal
of Underground Fuel Tank
- During removal of the underground
fuel storage tank, appropriate precautions should be taken to avoid contamination.
All fuel tanks and associated pipework should be emptied prior to any
demolition work being undertaken. Any remaining sludge or sediment in
the tanks or pipework should be removed and disposed of as chemical waste
in accordance with the appropriate regulations for disposal of such material.
- The base of the excavations
will be inspected by a suitably experienced environmental specialist in
order to determine whether there is any visual or olfactory evidence of
fuel contamination. If such contamination is suspected, then confirmatory
soil sampling will be carried out, and the samples analysed for TPH.
Supplementary
Investigations
- As the CLP secondary substation
is not available for site investigation, the scope of supplementary investigations
is to recover soil samples from around the CLP substation during the Phase
I works. Once access to these areas is available, a sampling and analysis
plan should be prepared for approval by EPD, additional investigations
will take place, and the need for remedial works will be determined. The
requirements for testing are summarized in Table 6.1 below.
Table
6.1 Requirements for Supplementary Site Investigations
Location
|
Parameters to be Tested
|
CLP Secondary Substation:
(soil samples)
During Phase I
|
Polychlorinated biphenyls
(PCBs)
Total petroleum hydrocarbon
(TPH) (diesel range)
|
- In addition, as the Existing
Crematorium will not be demolished until 2006, confirmatory site investigations
are also recommended and are shown in Table 6.2.
Table
6.2 Requirement for Confirmatory Site Investigations
Location
|
Parameters to be Tested
|
Locations S1 to S6:
(soil samples)
During Phase II
|
Dioxin
Heavy metal (Dutch “B”
List)
Polyaromatic hydrocarbon
(PAH)
|
Underneath underground
fuel tank (if visual or olfactory evidence of fuel contamination
by experienced environmental specialist)
(soil samples)
During Phase II
|
Total petroleum hydrocarbon
(TPH) (diesel range)
|
- The locations of S1 to S6
is provided in Figure 6.1.
Objectives
of Remediation Works
- The objectives of the remediation
works are to remove contamination from those areas where concentrations
of contaminants exceed the Dutch B Levels.
Design
and Implementation of Remediation Works
- Possible remedial techniques
for treating soil contaminated with metals include;
- Landfill disposal
- Solidification/Stabilisation
- Since the likely volume of
soil that is contaminated is small (less than 100m3), it is
considered that landfill disposal is the most appropriate remedial technique.
- The remedial works will consist
of removing soil from an area of 5m radius around sample locations S3
and S5, to a depth of 0.5m, and disposing of this material to landfill.
- Toxicity Characteristic Leaching
Procedure (TCLP) testing has been undertaken, and the concentrations of
lead and tin in the TCLP tests were several orders of magnitude lower
than the Landfill Disposal Criteria. Hence pre-treatment of the soil prior
to landfill disposal is not deemed necessary. Further TCLP testing (for
the full suite of parameters listed in Table E1 of EPD/TR1/99) will be
carried out on the confirmatory samples recovered from locations S1-S6
after decommissioning of the crematorium in 2006, for those samples which
require landfill disposal.
- Remediation site investigation
will be carried out following excavation at locations S3 and S5, in order
to confirm that all contaminated material has been removed. The remediation
site investigation will consist of five samples in each location, situated
immediately to the north, south, east and west of S3 and S5, and at the
base of the excavation, to be analysed for lead and tin. If the results
of analysis are less than the Dutch B Levels, no further excavation will
be required. If the concentrations exceed the Dutch B Level, then the
area of excavation should be extended, and further confirmatory testing
should be carried out following this excavation. In this event, the area
of excavation should be extended by a further 5m radius in the quadrant
where the contaminated sample is encountered, or by a further 0.5m depth
if the contaminated sample is from the base of the excavation. This procedure
should be followed until no further contamination is encountered. A schematic
presentation of the proposed remedial works is shown in the Figure 6.2.
Potential
Additional Remedial Requirements
- Should contamination be encountered
beneath the fuel tank or the CLP secondary substation, further remedial
work will be required. Such potential contamination would consist of either
TPH (in the case of the fuel tank) or PCBs (in the case of the CLP substation).
- Although there is no evidence
to date of contamination associated with the fuel tank, and the drillholes
around the fuel tank do not indicate contamination, there is the possibility
that the material directly underlying the fuel tank may be contaminated
with TPH. A realistic worst case estimate is that the volume of contaminated
material would no more than 105m3 (i.e. approximately 7m x
5m x 3m depth). For this volume of material, treatment by bioremediation
is likely to be uneconomic, and the recommended remedial strategy would
be landfill disposal. The actual remedial strategy to be adopted is subject
to the findings of the supplementary investigations.
- The likelihood of significant
widespread PCB contamination beneath the substation is considered to be
low, due to the low mobility of PCBs in the environment and the low likelihood
of a spillage occurring. As a realistic worst-case estimate, it could
be assumed that less than 25m3 (i.e. 5m x 5m x 1m depth) of
material could be contaminated, and may require stabilisation with cement
prior to disposal to landfill. The actual remedial strategy to be adopted
is subject to the findings of the supplementary investigations.
Particular
Requirements for Remedial Works
Health and Safety Precautions
- The site workers engaged in
the remedial works should be provided with adequate personal protective
equipment, which should include:
- Protective footwear;
- Gloves;
- Dust masks; and
- Overalls.
- A clean area should be provided,
equipped with washing facilities. Eating, drinking and smoking should
only be permitted within designated “clean” areas after washing.
Excavated material should not
be stockpiled, but should immediately be treated/transported to landfill
on a daily basis.Avoidance of Impacts on Water Quality
- In order to avoid impacts
on water quality during remedial works, care will be taken to minimize
the mobilisation of sediment during excavation and transport. Measures
to be adopted will be based on the recommendations set out in Practice
Note for Professional Persons ProPECC PN1/94 “Construction Site Drainage”.
The results of the site investigation suggest that there is unlikely to
be any requirement for dewatering of excavations, since groundwater was
not encountered in any of the exploratory holes.
- The contractor carrying out
the remedial works will be required to submit a method statement detailing
the measures to be taken to avoid water quality impacts. Typical measures
would include;
- Carry out the works during the
dry season (i.e. October to March) if possible;
- Use bunds or perimeter drains
to prevent run-off water entering excavations;
- Sheet or otherwise cover excavations
whenever rainstorms are expected to occur;
- Minimise the requirements for
stockpiling of material and ensure any stockpiles are covered;
- Temporary on-wit stockpiling
of contaminated materials should be avoided, and all excavated contaminated
soils/materials should be disposed of on a daily basis;
- Ensure that any discharges to
storm drains pass through an appropriate silt trap.
Waste Disposal
Requirements
- An application for permission
to dispose of excavated material should be made to the Facilities Management
Group of EPD three months prior to disposal. A “trip-ticket” system should
be implemented.
- Each load of contaminated
soil despatched to landfill should be accompanied by an admission ticket.
- Vehicles leaving the site
should be adequately sheeted to prevent dispersion of contaminated material
during transport. The wheels of vehicles should be cleaned prior to leaving
site, to prevent contaminated material leaving site on the wheels of vehicles.
Compliance
Report
- Following completion of remediation
works, a Remediation Report should be compiled and submitted, to demonstrate
that the remediation works have been carried out in accordance with the
Remediation Action Plan. The Remediation Report should include details
of the excavation works carried out, records of material taken to landfill,
and results of confirmatory testing, and should be submitted to EPD for
approval before the commencement of building works.
6.3 Potential
for Future Land Contamination
- The proposed development is
a replacement for the Existing Crematorium. There is the potential for
the development to give rise to land contamination in the future, if appropriate
environmental standards are not followed.
- The most potentially significant
future sources of contamination are:
- Spills or leakage of fuel stored
for the cremators; and
- Aerial deposition of metals
and dioxins.
- Provided the crematorium complies
with the prescribed air emissions limits, it is considered very unlikely
that aerial deposition would give rise to significant land contamination,
due to the very small quantities of metals and dioxins that would be emitted.
- The fuel storage facilities
to be provided in the New Crematorium should be constructed, maintained
and inspected in accordance with the provisions of the Dangerous Goods
(General) Regulations (Cap. 295B) and the guidelines presented in “Guidance
for the Design, Construction, Modification and Maintenance of Petrol Filling
Stations” (Institute of Petroleum, 1999), and with the necessary approvals
from the Fire Services Department. To mitigate the environmental impacts
from operational land contamination, the following mitigation measures
shall be implemented for installation and operation of any underground
fuel tanks:
- The underground fuel tank(s)
shall be of a specified durability and placed within a concrete pit to avoid
direct contact of the tank surface with soil.
- The concrete pit shall be accessible
to allow tank integrity test be carried out on an annual basis, or when
deemed necessary by an independent qualified surveyor or structural engineer.
Any potential problems such as potential cracking shall be rectified as
far as practicable.
- Diesel fuel pipelines are preferably
to be installed above ground. If underground piping is unavoidable, concrete
lined trenches shall be constructed to contain the pipelines. The distance
between the cremators and the underground tanks shall be minimized as appropriate
to avoid the need for long pipelines.
- Proper installation and use
of meters (e.g. at the two ends of any pipeline) would allow any unexpected
pressure drop or difference and signs of leakage be detected from routine
inspection or during diesel fuel pumping. Any identified leakage shall be
reported to the plant manager in-charge.
- Any spillage of fuel shall be
removed immediately by portable pump when the quantity is large or by absorbing
materials when the quantity is low or with similar effective tools as appropriate.
Used absorbing material shall be properly stored and disposed of as chemical
waste.
- The underground tanks refueling
(from tank trucks) shall only be undertaken by authorized staff of the fuel
company using the company's standard procedures to avoid spillage of diesel
fuel.
7. WASTE
MANAGEMENT
7.1 Introduction
- The Contractor shall be responsible
for waste control within the Project, removal of the waste material produced
from the site and implementation of any mitigation measures to minimise
waste or redress problems arising from waste generated on the site during
the construction and demolition phases. The waste materials may include
excavated material, construction and demolition material, contaminated
materials, chemical waste and general refuse.
- When handling the waste materials,
the following measures shall be undertaken:
- The Contractor should incorporate
recommendations into a comprehensive on-site Waste Management Plan (WMP),
which is to be submitted to the EPD for approval within one month after
commencement of construction and demolition work. This should include all
factors dependent on individual works sites including designation of areas
for the segregation and temporary storage of materials for future use or
recycling. Such provision cannot be specified at this stage. The Contractor
should follow the recommendations of WBTC No. 29/2000 for on-site separation
of waste, and 21/2002 for trip-ticket system for disposal of construction
and demolition material. The WMP shall also define clearly the hierarchy
for waste management on and off-site as well as a complete list of mitigation
measures for handling excavated works.
- Under the proposed scheme, the
Contractor would be required to separate wastes to ensure maximum reuse
of materials and minimise adverse impact on the environment.
- During the operation phase,
FEHD shall be responsible for the management of waste materials, which
include ash and non-combustible residues, chemical waste and general refuse.
- The environmental mitigation
measures for waste management during the construction and demolition phase
as well as during the operation phase are summarised in the following
section.
7.2 Mitigation
of Adverse Environmental Impacts for Construction and Demolition Phase
General - Good Site
Practice and Waste Reduction Measures
- If good site practices are
strictly followed, it is expected that adverse environmental impacts due
to waste generation would not arise. The following recommendations for
good site practice should be included in the Contract Specifications for
the Project during the construction activities:
- Obtain relevant waste disposal
permits from the appropriate authorities, in accordance with the Waste Disposal
Ordinance (Cap. 354), Waste Disposal (Chemical Waste) (General) Regulation
(Cap. 354) and the Land (Miscellaneous Provision) Ordinance (Cap. 28)
- Prepare a Waste Management Plan
approved by the Engineers/Supervising Officer in the Project in accordance
with Environment, Transport and Works Bureau Technical Circular (Works)
(ETWBTC(W)) 15/2003, Waste Management On Construction Sites
- Nominate an approved person,
such as site manager, to be responsible for good site practice, arrangements
for collection and effective disposal of all types of wastes generated on-site
to appropriate facility
- Use waste haulier authorized
or licensed to collect specific category of waste
- Establish trip ticket system
as contractual requirement (with reference to Works Branch Technical Circular
(WBTC) No. 21/2002) for monitoring of public fill and C&D waste at public
filling facilities and landfills. Such activities should be monitored by
the Environmental Team
- Provide training to site staff
in terms of proper waste management and chemical waste handling procedures
- Separate chemical wastes for
special handling and dispose them at licensed facility for treatment
- Establish routine cleaning and
maintenance programme for drainage systems, sumps and oil interceptors
- Provide sufficient waste disposal
points and regular collection for disposal
- Adopt measures to minimize windblown
litter and dust during transportation of waste such as covering trucks or
transporting wastes in enclosed containers
- Establish recording system for
the amount of wastes generated, recycled and disposed of (including the
disposal sites)
- The contractor should submit
the Waste Management Plan to Engineer/Supervising Officer of the Project
for approval. The Waste Management Plan should describe the arrangements
for avoidance, reuse, recovery and recycling, storage, collection, treatment
and disposal of different categories of waste to be generated from the
activities of the Project and indicate the disposal location(s) of all
waste. A trip ticket system shall be included in the Waste Management
Plan.
- Waste reduction is the most
effective when considered during planning and design stage, provided those
suggested measures are implemented. Good management and control can prevent
the generation of significant amount of waste. It is therefore recommended
to include the following practice in the Contract Specifications to ensure
waste reduction:
- Minimize the damage or contamination
of construction material by proper storage and site practices
- Plan and stock construction
materials carefully to minimize amount of waste generated and avoid unnecessary
generation of waste
- Prior to disposal of C&D
waste, wood, steel and other metals should be separated for reuse and /
or recycling to minimize the quantity of waste to be disposed of to landfill
- Minimize use of wood and reuse
non-timber formwork to reduce the amount of C&D waste
- Recycle any unused chemicals
or those with remaining functional capacity as far as practicable
- As far as practicable, segregate
and store different types of waste in different containers, skips or stockpiles
to enhance reuse or recycling of materials and their proper disposal
- Encourage collection of aluminium
cans, plastic bottles and packaging material (e.g. carton boxes) and office
paper by individual collectors, separate labeled bins should be provided
to help segregate this waste from other general refuse generated by the
work force
- In addition to the above,
specific mitigation measures are recommended below for the identified
waste to minimize environmental impacts during handling, transportation
and disposal of these wastes.
Excavated
Material
- Rock and soil generated from
excavation should be reused for site formation as far as possible. In
addition, excavated material from foundation work can be reused for landscaping
as far as practicable to avoid disposal off-site.
Construction
and Demolition Material
- Careful design, planning and
good site management can minimize over-ordering and generation of waste
materials such as concrete, mortar and cement grouts. Standard formwork
should be used as far as practicable, wooden formwork should be replaced
by metal ones whenever possible. Alternatives such as plastic fencing
and reusable site office structures can also minimize C&D waste generation.
- The contractor should recycle
as much as possible of the C&D material on-site. Public fill and C&D
waste should be segregated and stored in different containers or skips
to enhance reuse or recycling of materials and their proper disposal.
Materials such as concrete and masonry can be crushed and used as fill
and steel reinforcing bar can be used by scrap steel mills. Different
areas of sites should be designated for such segregation and storage.
- To maximize landfill life,
government policy discourages the disposal of C&D materials with more
than 20% inert material by volume (or 30% inert material by weight) at
landfill. Inert C&D material (public fill) should be directed to an
approved public filling area, where it has the added benefit of offsetting
the need for removal of materials from borrow areas for reclamation purposes.
Contaminated
Materials Further
Contamination Investigation
- After decommissioning but
prior to demolition of the Existing Crematorium, further contamination
investigation should be carried out to confirm the quality and quantity
of ash waste, building structures and contaminated soil requiring treatment
and disposal (see Table 7.1 for details). Further contamination investigation
shall provide information on the extent of contamination (DCM / HMCM /
PAHCM ) at cremators /flues / chimney as well as the quantity of contaminated
materials requiring treatment and disposal. Regarding ACM, future AIR,
AMP/AAP should be submitted to EPD for approval under the APCO.
Table 7.1 Further
Contamination Investigation Requirements
Location
|
Investigation Parameter
|
Investigation Period
|
Responsible Party
|
Cremators / flue / chimney
and surrounding areas
|
Asbestos
(building structures)
|
Phase II
|
The contractor
|
Cremators / flue / chimney
and surrounding areas
|
Dioxins, heavy metals,
PAH
(ash waste)
|
Phase II
|
The contractor
|
- For DCM / HMCM / PAHCM in
ash waste, samples of ash/particulate matters should be collected from
within the cremators (including the bottom ash), chimney walls, flues
and surrounding area of the Existing Crematorium for analysis of dioxin
, heavy metals and PAH by a HOKLAS accredited laboratory. It is recommended
that a consultant experienced in the abatement of chemical wastes particularly
the handling of DCM, should be appointed in order to assist with the evaluation
of the information and prepare an abatement plan for the ash waste. Such
a plan shall be submitted to EPD and the Labour Department (LD) to establish
an acceptable and safe method for these potentially hazardous waste. The
abatement plan of ash waste should identify the method of abatement, the
performance criteria for the protection of workers and the environment
and any emergency procedures and contingency measures required. The plan
should also quantify the amount of material that will require removal.
The abatement plan should be agreed with EPD and LD.
- It must be ensured that the
treatment of ash wastes will comply with all routine construction site
safety procedures as well as statutory requirements under the Occupational
Safety and Health Ordinance and Factories and Industrial Undertakings
Ordinance. Due to the difficulties in establishing permanent and effective
engineering controls, the protection of workers is likely to be at the
worker level. A safe system of work must be provided, and training and
suitable personal protective equipment as well as hygienic decontamination
facilities should be provided. It is recommended that the methods to be
adopted by the contractor for disposal of the ash waste should be agreed
with LD and EPD.
- Sufficient time should be
allocated to abate all ash waste with DCM/HMCM/PAHCM. The contractor should
ensure the implications of dust containing DCM/HMCM/PAHCM on air quality
and workers health during the clean up work are mitigated.
- Since DCM is chemically related
to Polychlorinated Biphenyl (PCB) wastes, the requirements of the Code
of Practice on the Handling, Transportation and Disposal of (PCB) Wastes
should be referenced when developing the abatement plan. Reference should
also be made to the safety procedure mentioned in Section 6 of
EM&A Manual.
- The key measures for handling,
transportation, treatment and disposal of ACM/DCM/HMCM/PCBCM/PAHCM and
TPHCM are described below:
Asbestos
Containing Materials (ACM)
- Further asbestos assessment
should be carried out when access to the cremators /flue /chimney is accessible
after decommissioning and before demolition. An AMP should be prepared.
The AAP should be prepared and submitted to EPD for approval prior to
commencement of demolition works in accordance to the APCO. It is preferable
to remove all ACM before actual demolition. A registered asbestos removal
contractor should be employed to remove all ACM in accordance with the
approved AAP which will be prepared in due course in accordance with the
Code of Practice (COP) on Asbestos Control for Safe Handling
of Low Risk ACM and Asbestos Work Using Full Containment or Mini
Containment Method published by EPD. A registered asbestos consultant
should also be employed to supervise abatement works. For the disposal
of ACM, the contractor should observe the COP on Handling, Transportation
and Disposal of Asbestos Waste under the Waste Disposal (Chemical
Waste) (General) Regulation.
Dioxin
Containing Materials (DCM) / Heavy Metal Containing Materials (HMCM) / Polyaromatic
Hydrocarbon Containing Materials (PAHCM) from Demolition of the Existing
Crematorium
- According to the experience
in Kwai Chung Incineration Plant (KCIP) and Tang Siu Kin Hospital (TSKH),
the level of dioxin was the prime factor affecting the ash waste treatment
and disposal options. With references to the remediation and disposal
methods in KCIP and TSKH clinical waste incinerator, different contamination
classifications based on the levels of DCM/HMCM/PAHCM in ash waste are
proposed in Table 7.2, and their corresponding handling, transportation,
treatment and disposal methodologies are described in the subsequent paragraphs.
Table 7.2 Proposed
Contamination Classification for Ash Waste with DCM/HMCM/PAHCM
Classification of Contamination
|
Dioxin Level in Ash Waste
|
Heavy Metal Level / Polyaromatic
Hydrocarbon in Ash Waste
|
Low/Non Contaminated
DCM / HMCM / PAHCM
|
< 1 ppb TEQ
|
< Dutch “B” List
|
Moderately/Severely Contaminated
HMCM / PAHCM
|
< 1 ppb TEQ
|
? Dutch “B” List
|
Moderately Contaminated
DCM
|
? 1 and <10 ppb TEQ
|
Any level
|
Severely Contaminated
DCM
|
? 10 ppb TEQ
|
Any level
|
Demolition, Handling,
Treatment and Disposal of Low/Non Contaminated DCM / HMCM / PAHCM from Demolition
of Existing Crematorium
- Where the ash waste contains
low/non contaminated DCM/HMCM/PAHCM, the contractor should avoid ash waste
becoming airborne during demolition. General dust suppression measures
mentioned in Section 4 should be followed. All such ash waste can
be directly disposal of at landfill.
- Subject to the findings of
the further asbestos investigation, building structures where such ash
waste is found but contaminated with asbestos should be dealt in accordance
to Section 7.2.15.
Demolition,
Handling, Treatment and Disposal of Moderately Contaminated DCM and Moderately/Severely
Contaminated HMCM / PAHCM from Demolition of the Existing Crematorium
- The demolition, handling,
treatment and disposal of moderately contaminated DCM and moderately/severely
contaminated HMCM / PAHCM with reference to the Demolition of Kwai
Chung Incineration Plant EIA Report and the Project Profile for
the Decommissioning and Disposal of a Clinical Waste Incinerator at Tang
Siu King Hospital is given in Table 7.3.
Table
7.3 Demolition, Handling, Treatment and Disposal of Moderately Contaminated
DCM and Moderately/Severely Contaminated HMCM / PAHCM
Item
|
Procedure
|
Site Preparation
|
The contractor should
ensure the impacts of dust containing dioxin and/or heavy metals
on air quality and workers health during the handling and transportation
of the contaminated materials are mitigated. Except the cremators/flue/chimney,
all removable items where moderately contaminated DCM or moderately/severely
contaminated HMCM / PAHCM is identified should be removed as far
as practicable to avoid obstructing the decontamination activities.
Preliminary site decontamination of all debris shall be carried
out using (High Efficiency Particulate Air) HEPA vacuum cleaner.
The top portion of the chimney above the roof shall be enclosed
by a chamber with three layers of polyethene sheets. At the entrance
to the cremators /flues /chimney, a 3-chamber decontamination unit
shall be constructed for entry and exit from the work area. The
3-chamber decontamination unit shall comprise a dirty room, a shower
room and a clean room of at least 1m x 1m base each with 3 layers
of fire retardant polyethene sheet where all workers shall carry
out decontamination procedures before leaving the work area. Warning
signs in both Chinese and English should be put up in conspicuous
areas.
|
|
All workers shall wear
full protective equipment, disposable protective coverall (such
as Tyvek) (with hood and shoe covers), nitrile gloves, rubber boots
(or boot covers), and full-face positive pressure respirators equipped
with a combination cartridge that filters particulate and removes
organic vapour. The organic vapour protection is an added protection
against the unlikely exposure to any vapour.
|
|
If ACM is identified
in building structures where moderately contaminated DCM or moderately/severely
contaminated HMCM / PAHCM is found, relevant abatement measures
for building structures described in the AAP (see Section 7.2.15)
should be implemented prior to the above site preparation.
|
Demolition and handling
|
The cremators/flue/chimney
shall be removed from top down starting from the chimney. Any ash
or residues attached to the cremators/flue/chimney or any other
building structures shall be removed by scrubbing and HEPA vacuuming.
Wastes generated from
the containment or decontamination unit including the protection
clothing of the workers such as the coverall, nitrile glove, rubber
boots and materials used for wet wiping shall be disposed of at
landfill site.
|
|
After completion of removal,
decontaminate all surfaces by HEPA vacuum.
|
|
If ACM is identified
in building structures where moderately contaminated DCM or moderately/severely
contaminated HMCM / PAHCM is found, relevant abatement measures
for building structures described in the AAP (see Section 7.2.15)
should be implemented prior to the above decontamination, demolition
and handling measures.
|
Treatment
|
The ash waste contains
dioxin/heavy metals and in its untreated state would be classified
as a chemical waste under the Waste Disposal (Chemical Waste)
(General) Regulation. While the quantity of DCM/HMCM is not
expected to be significant, the levels of dioxin and heavy metals
would affect the treatment option. With reference to the Demolition
of Kwai Chung Incineration Plant EIA Report, immobilization
of the contaminated materials by mixing with cement followed by
disposal at landfill (if landfill disposal criteria can be met)
would be the most preferable option.
|
|
|
|
|
|
|
|
Rather than treating
the already incinerated ash waste by incineration, the ash waste
with moderately contaminated DCM or moderately/severely contaminated
HMCM / PAHCM should be collected and stabilized to meet landfill
disposal criteria of the Facilities Management Group (FMG) of EPD.
In this case it is envisaged that the process would involve collection
and mixing of the ash waste with cement. Pilot mixing and TCLP tests
should be carried out done to establish the appropriate ratio of
cement to ash waste to the satisfaction of EPD. It is envisaged
that the pilot tests would involve the mixing of say 5%, 10% and
15% ratios of cement to ash waste and three replicate of 300 mm
cube blocks for each ratio. TCLP tests should then be used to establish
the correct ratio of cement to ash waste to the satisfaction of
EPD.
|
Disposal
|
After immobilization
of the ash waste by mixing with cement in the correct ratio as determined
by the pilot mixing and TCLP test, the waste materials should be
placed inside polyethene lined steel drums for disposal at landfill.
Transparent plastic sheeting of 0.15 mm thickness low-density polyethene
or PVC should be employed. The drums should be 16 gauge steel or
thicker and fitted with double bung fixed ends adequately sealed
and well labelled in new or good condition. The drums should be
clearly marked “DANGEROUS CHEMICAL WASTE” in English and Chinese.
Prior agreement of the disposal criteria from the FMG of EPD and
agreement to disposal from the landfill operator must be obtained.
|
|
As a fall back option,
if the landfill disposal criteria cannot be met after immobilization
of the ash waste, disposal at the CWTC should be considered.
|
|
The building structures
will be disposal of at landfill.
|
|
If ACM is identified
in building structures where moderately contaminated DCM or moderately/severely
contaminated HMCM / PAHCM is found, relevant disposal measures for
building structures described in the AAP (see Section 7.2.15)
should be implemented instead.
|
Demolition, Handling,
Treatment and Disposal of Severely Contaminated DCM from Demolition of the
Existing Crematorium
- The areas with severely contaminated
DCM shall be removed under containment as a prudent approach to avoid
the release of any ash waste to the environment, which could be generated
during the demolition of cremators/flue/chimney of the Existing Crematorium.
The demolition, handling, treatment and disposal of severely contaminated
DCM with reference to the Project Profile for the Decommissioning and
Disposal of a Clinical Waste Incinerator at Tang Siu King Hospital
is given in Table 7.4.
Table 7.4 Demolition,
Handling, Treatment and Disposal of Severely Contaminated DCM
Item
|
Procedure
|
Site Preparation
|
Except the cremators/flue/chimney,
all removable items where severely contaminated DCM is identified
should be removed from the cremator room as far as practicable to
avoid obstructing the decontamination activities. Preliminary site
decontamination of all debris shall be carried out using HEPA vacuum
cleaner. The walls, floor and ceiling of the cremator room where
severely contaminated DCM located shall be lined with 3 layers of
fire retardant polyethene sheets. The top portion of the chimney
above the roof shall be enclosed by a chamber with three layers
of polyethene sheets. At the entrance to the cremators/flues/chimney,
a 3-chamber decontamination unit shall be constructed for entry
and exit from the work area. The 3-chamber decontamination unit
shall comprise a dirty room, a shower room and a clean room of at
least 1m x 1m base each with 3 layers of fire retardant polyethene
sheet where all workers shall carry out decontamination procedures
before leaving the work area. Warning signs in both Chinese and
English should be put up in conspicuous areas.
|
|
Air movers should be
installed at the cremator room, and at the bottom of the chimney
to exhaust air from the work area. A stand-by air mover shall also
be installed with each of the air movers. Sufficient air movement
shall be maintained to give a minimum of 6 air changes per hour
to the work area, and maintain a negative pressure of 0.05-0.15
inches of water within the work area throughout the entire course
of the decommissioning works. A pressure monitor with printout records
and audible alarm shall be installed at an easily accessible location
to demonstrate that negative pressure is maintained. New pre-filters
and HEPA filters shall be used on the air movers.
|
|
A copy of the maintenance
records of the air movers should be kept on site for inspection
upon request. The appointed contractor shall also check the differential
pressure of the air mover to make sure the filter is not blocked.
A differential pressure above 0.2 inches of water indicates that
the filters would need to be changed.
|
|
Smoke Test: before commencement
of the decommissioning work, a smoke test with non-toxic smoke shall
be carried out to ensure the air-tightness of the containment. Also
check whether there are stagnant air pockets indicated by an aggregate
of smoke that cannot effectively be extracted. After a successful
test, switch on the air mover to exhaust smoke from the containment
and to give a minimum of 6 air changes per hour, and check visually
to see that the filters screen out the smoke effectively and if
the pressure gauges read normal. If not, the air mover shall be
sealed up and returned to the supplier workshop for necessary servicing,
and replaced by a tested air mover. The normal reading pressure
range for maintaining 6 air changes per hour shall be 1.5-4 mm/0.05-0.15
inches of water or equivalent (negative pressure). The audible alarm’s
integrity should also be checked and the trigger shall be at <1.5
mm/0.05 inches of water (negative pressure). Otherwise securely
seal up all openings before switching off the air mover.
|
|
Treatment of Waste/Workers
Safety Protection: the contractor shall be required to register
as a Chemical Waste Producer. All workers shall wear full protective
equipment, disposable protective coverall (such as Tyvek) (with
hood and shoe covers), nitrile gloves, rubber boots (or boot covers),
and full-face positive pressure respirators equipped with a combination
cartridge that filters particulate and removes organic vapour. The
organic vapour protection is an added protection against the unlikely
exposure to any vapour as a necessary measure.
|
|
If ACM is identified
in building structures where severely contaminated DCM is found,
relevant abatement measures for building structures described in
the AAP (see Section 7.2.15) should be implemented prior
to the above site preparation.
|
Demolition and handling
|
The cremators/flue/chimney
shall be removed from top down starting from the chimney. Any ash
or residues attaching to the cremators/flue/chimney or any other
building structures shall be removed by scrubbing and HEPA vacuuming.
|
|
The detached sections
of the building structures where severely contaminated DCM is located
shall be wrapped with 2 layers of fire retardant polyethene sheets.
A third layer shall then be wrapped and secured with duct tape.
Decontaminate the outer layer of the wrapped flue sections by wet
wiping.
|
|
Wastes generated from
the containment or decontamination unit including the fire retardant
polyethene sheets, protection clothing of the workers such as the
coverall, nitrile glove, rubber boots and materials used for wet
wiping shall be disposed of at landfill site.
|
|
The quantity of wastewater
generated from the decontaminated process will be very small but
the contractor should take precautionary measures as to minimize
the quantity of contaminated water arising. Nevertheless, if any
contaminated wastewater needs to be discharged out of the site,
it has to be properly treated to WPCO requirements with prior agreement
from EPD on discharge standards.
|
|
After completion of removal,
decontaminate the surface where severely contaminated DCM was located,
including the wrapped incinerator furnace and flue sections left
within the containment, by wet wiping and HEPA vacuum. Then spray
the innermost layer of the fire retardant polyethene sheet covering
the wall, ceiling and floor with PVA. Upon drying, peel off this
innermost layer of the polyethene sheet covering the containment
and dispose of at landfill site.
|
|
Repeat the above decontamination
procedure for the second innermost layer of fire retardant polyethene
sheet by wet wiping and HEPA vacuuming. After spraying with PVA,
peel off this second innermost layer of the polyethene sheet covering
the wall, ceiling and floor and dispose of at landfill site. Finally,
the last layer of polyethene sheet shall then be taken down after
spaying with PVA and be disposed as contaminated wastes.
|
|
If ACM is identified
in building structures where severely contaminated DCM is found,
relevant abatement measures for building structures described in
the AAP (see Section 7.2.15) should be implemented prior
to the above decontamination, demolition and handling measures.
|
Treatment and disposal
|
Waste to be disposed
to CWTC: all contaminated ash waste with severely contaminated DCM
removed and the used HEPA filters shall be sent to CWTC in Tsing
Yi. The total volume should be confirmed by further site investigation.
|
|
Waste to be Disposed
of at Landfill: other wastes including the building structures and
its associated panels as well as wastes generated from this decommissioning
works are also considered as contaminated waste and shall be disposed
of at a designated landfill. Wastes generated from this decommissioning
works refer to the polyethene wrapping sheets for the building structures,
waste generated from the dismantlement of the containment and decontamination
units, and cloth used in wet wrapping, etc. as previously described
in this section. They shall be placed into appropriate containers
such as drums, jerricans, or heavy duty and leak-proof plastic as
a prudent approach. A disposal permit has to be obtained from the
Authority. The disposal trip ticket is required to be made available
as record after disposal.
|
|
If ACM is identified
in building structures where severely contaminated DCM is found,
relevant disposal measures for building structures described in
the AAP (see Section 7.2.15) should be implemented in prior
to the above disposal measures.
|
Dioxin Containing
Materials (DCM) / Heavy Metal Containing Materials (HMCM) ) / Polyaromatic
Hydrocarbon Containing Materials (PAHCM) / Total Petroleum Hydrocarbon Containing
Materials (TPHCM) / Polychlorinated Biphenyls Containing Materials (PCBCM)
from Soil Remediation at the Project Site
- According to the CAR and RAP
provided in Appendix C2 of the EIA Report, less than 100 m3
of soil would require disposal at landfill. Relevant health and safety
procedure, waste disposal requirements and compliance report are as detailed
in Appendix C2. Mitigation measures to avoid fugitive dust emission
mentioned in Section 4 of the EM&A Report should also be observed.
- In addition, after decommissioning
but before demolition of the Existing Crematorium, further investigations
during Phase I of the works at the vicinity of CLP secondary substation
should also be carried out to determine if additional remediation (in
addition to the current RAP) is required. Confirmatory test on levels
of DCM, HMCM and PAHCM in locations S1 to S6 during Phase II of the works
is also required to determine any further remediation /treatment/disposal.
In addition, the ash waste in cremator/chimney/flues should also be collected
for the testing of DCM/HMCM/PAHCM during Phase II of the works. The sampling
and analysis plan should be prepared and submitted to EPD for approval.
- All the aforementioned ACM
/ DCM / HMCM / PAHCM / TPHCM / PCBCM are classified as chemical waste.
In addition to the measures mentioned above, the packaging, labelling
and storage practices of chemical waste as stipulated in the following
paragraphs should also be applied to these contaminated materials.
Chemical
Waste
- All the chemical waste should
be handled according to the Code of Practice on the Packaging, Labelling
and Storage of Chemical Wastes. The chemical waste should be stored
and collected by an approved contractor for disposal at a licensed facility
in accordance with the Waste Disposal (Chemical Waste) (General) Regulation.
Containers used for the storage of chemical waste should:
- Be suitable for the substance
they are holding, resistant to corrosion, maintained in good condition,
and securely closed;
- Have a capacity of less than
450 L unless the specifications have been approved by the EPD; and
- Display a label in English and
Chinese in accordance with instructions prescribed in Schedule 2 of
the Waste Disposal (Chemical Waste) (General) Regulation.
- The storage area for chemical
waste should:
- Be clearly labeled and used
solely for the storage of chemical waste;
- Be enclosed on at least 3 sides;
- Have an impermeable floor and
bunding, of capacity to accommodate 110% of the volume of the largest container
or 20% by volume of the chemical waste stored in that area, whichever is
the greatest;
- Have adequate ventilation;
- Be covered to prevent rainfall
from entering (water collected within the bund must be tested and disposal
as chemical waste if necessary); and
- Be properly arranged so that
incompatible materials are adequately separated.
- The chemical waste should
be disposed of by:
- A licensed waste collector;
- A facility licensed to receive
chemical waste, such as the CWTC at Tsing Yi, which offers chemical waste
collection service and can supply the necessary storage containers; and/or
- A waste recycling plant as approved
by EPD.
General Refuse
- General refuse should be stored
in enclosed bins or compaction units separated from C&D and chemical
wastes. A reliable waste collector should be employed by the contractor
to remove general refuse from the site, separately from C&D and chemical
wastes, on a daily or every second day basis to minimize odour, pest and
litter impacts. The burning of refuse on construction sites is prohibited
by law.
- Aluminum cans are often recovered
from the waste stream by individual collectors if they are segregated
or easily accessible. Therefore, separately labeled bins for deposit of
these cans should be provided if feasible. Similarly, plastic bottles
and carton package material generated on-site should be separated for
recycling as far as practicable. Site office waste should be reduced through
recycling of paper if volumes are large enough to warrant collection.
Participation in a local collection scheme should be considered if one
is available.
7.3 Mitigation
of Adverse Environmental Impacts for Operation Phase
Ash and Non-combustible
Residues
- The disposal of bone ash and
non-combustible residues should be properly collected and handled to avoid
dust emissions. In line with the current practices, the bone ash will
be stored in covered containers for collection by the deceased’s relatives
within 2 months upon appointment while the non-combustible residues will
be collected in sealed heavy-duty polyethene bags for disposal at landfill.
Chemical
Waste
- The chemical wastes generated
from the air pollution control system would mainly include used activated
carbon and un-reacted lime and collected particulate matter. To prevent
health hazards to operators, all such chemical wastes should be carefully
collected and handled to avoid dust emissions.
- All the chemical wastes generated
from the air pollution control system as well as from machinery maintenance
and servicing should be dealt with according to the Code of Practice
on the Packaging, Labelling and Storage of Chemical Wastes under the
provisions of the Waste Disposal (Chemical Waste)(General) Regulation.
The chemical wastes should be collected by drum-type containers and removed
by a licensed chemical waste contractor. In addition, the relevant measures
as provided in Section 7.2 should be followed.
General
Refuse
- Waste generated in offices
should be reduced through segregation and collection of recyclable waste
materials (such as paper and carton packages) if the volumes are large
enough to warrant collection. Participation in a local collection scheme
should be considered if one is available.
- To promote recycling of waste
paper, aluminum cans and plastic bottles by the visitors, it is recommended
to place clearly labeled recycling bins (such as those available from
EPD) at convenient locations within the New Crematorium area. The recyclable
waste materials should then be collected by reliable waste recycling agents
on a regular basis.
- The general refuse (other
than those segregated recyclable wastes) should be separated from any
chemical wastes and stored in covered waste skips. FEHD should remove
general refuse from the site, separately from chemical wastes, on daily
basis to minimize odour, pest and litter impacts. Burning of refuse must
be strictly prohibited.
8. LANDSCAPE
AND VISUAL IMPACT
8.1 Introduction
- The EIA has recommended the
landscape and visual impact mitigation measures to be undertaken during
the construction, demolition and operation phases of the Project. The
following sections outlines the relevant requirements.
8.2 Monitoring
Requirements
- Audit of the implementation
of the landscape and visual mitigation measures should be carried out
by inspections at weekly intervals during the construction and demolition
work phases by a Landscape Architect appointed by Arch SD. Further monitoring
shall be carried out after the first, the sixth and twelfth month of the
completion of all recommended planting works. The Landscape Architect
shall be responsible for inspection of the growth of plants in accordance
with the Landscape Master Plan to make sure mitigation measures are effective
and the landscape of the Project area has been enhanced.
8.3 Measures
to Mitigate Landscape and Visual Impacts
- Tree transplanting:
The tree survey has identified the trees which will be affected by the
development and which could be considered for transplanting prior to commencement
of construction work. Felling will only be considered as a last resort
and every effort should be made to transplant the many good trees of high
amenity value to either nearby suitable sites within the cemetery or in
the Wo Hop Shek Cemetery in the New Territories.. The feasibility of transplanting
will depend on a number of factors such as size, health and species of
the tree. Adequate time (a minimum of 4 months) should be allowed for
preparing trees for transplanting. Particular care should be taken to
save the 9 nos. mature and semi-mature protected tree species and 12 nos.
protected shrub and immature tree species identified. To give the protected
species the best possible chance of survival it is recommended that they
are relocated to sheltered and well maintained planted areas within the
cemetery, ideally within Phase I of the reprovisioned crematorium. In
addition, weekly inspection of tree protection measures as well as monitoring
of tree transplant operations during both phases should be implemented.
- Tree protection:
Trees to be retained adjacent to works areas will be carefully protected
by strong hoarding and if necessary additional protection to individual
tree trunks to avoid damage by machinery. The hoarding will also prevent
contractors from compacting soil around tree roots or dumping materials.
Reference should be made to the guidelines for tree protection in the
Government publication: Webb, R., (ed.) Tree Planting and Maintenance
in Hong Kong (Hong Kong: Hong Kong Government, 1991).
- Topsoil conservation:
Any topsoil excavated during construction will be carefully saved and
stored to one side of the works area for reuse upon completion.
- Replanting:
Upon completion planting of ornamental trees and shrubs will be provided
to the periphery of the New Crematorium building to help screen and soften
the overall appearance of the structure. In addition, a reprovisioned
memorial garden with a lotus pond and ornamental planting will be incorporated
in the deck area of the building, refer Figure 8.3for the Indicative
Master Landscape Plan. Since the majority of the new planting will be
on the deck structure the selection of species will be more limited with
emphasis on smaller trees and ornamental shrubs to comply with loading
restrictions.
- Crematorium Architecture:
The building profile has been designed in response to the site terraced
topography to minimise site formation which greatly reduces the overall
visual impact, (refer to Figures 2.2-2.5 and 8.3for building plan
and master landscape plan). In addition, it is recommended that the material
finishes be non-reflective and low-key in nature using predominantly recessive
tones to blend in as far as possible with the surrounding vegetation.
9. WATER
QUALITY
9.1 Introduction
- The EIA Study indicated that
no adverse impacts would be expected from the construction and demolition
activities with proper implementation of the environmental mitigation
measures as outlined in the following sections. No adverse water quality
impacts to nearby receiving water body would be anticipated during the
operation phase as only sewage/wastewater from toilets and general cleaning
activities will be generated, which will be directed to foul sewer leading
to the government’s Sewage Treatment Work.
- Water quality monitoring for
the construction and demolition phase as well as the operation phase of
the Project shall only be confined to the relevant effluent discharge
licensing requirements to be issued by EPD under the Water Pollution Control
Ordinance, CAP 358.
9.2 Mitigation
of Adverse Environmental Impacts
Construction and
Demolition Phase
- To safeguard the water quality
of the WSRs potentially affected by the Project works, the contractor
should implement appropriate mitigation measures with reference to the
Practice Note for Professional Persons, Construction Site Drainage
(ProPECC PN 1/94) published by EPD. Such measures are highlighted
as follows.
Construction
and Demolition Run-off and Drainage
- Exposed soil areas should
be minimized to reduce the potential for increased siltation, contamination
of run-off and erosion. Any effluent discharge from the Project site is
subject to the control of Water Pollution Control Ordinance (WPCO) discharge
license and should be treated to meet the discharge standard set out in
the relevant license. In addition, no site run-off should enter the stream
on the eastern side of the Project site. Run-off impacts associated with
the construction and demolition activities can be readily controlled through
the use of appropriate mitigation measures, which include:
- Temporary ditches should be
provided to facilitate run-off discharge into appropriate watercourses,
via a silt retention pond
- Boundaries of earthworks should
be marked and surrounded by dykes
- Open material storage stockpiles
should be covered with tarpaulin or similar fabric to prevent material washing
away
- Exposed soil areas should be
minimized to reduce the potential for increased siltation and contamination
of run-off
- Earthwork final surfaces should
be well compacted and subsequent permanent work should be immediately performed
- Use of sediment traps wherever
necessary
- Maintenance of drainage systems
to prevent flooding and overflow
- All temporary drainage pipes
and culverts provided to facilitate run-off discharge should be adequately
designed to facilitate rapid discharge of storm flows. All sediment traps
should be regularly cleaned and maintained. The temporarily diverted drainage
should be reinstated to its original condition, when the construction/demolition
work is completed.
- Sand and silt in wash water
from wheel washing facilities should be settled out and removed from discharge
into temporary drainage pipes or culverts. A section of the haul road
between the wheel washing bay and the public road should be paved with
backfall to prevent wash water or other site run-off from entering public
road drains.
- Oil interceptors should be
provided in the drainage system downstream of any significant oil and
grease sources. They should be regularly maintained to prevent the release
of oil and grease into the storm water drainage system after accidental
spillage. The inceptor should have a bypass to prevent flooding during
periods of heavy rain, as specified in ProPECC PN 1/94.
General
Construction and Demolition Activities
- All the solid waste and chemical
waste generated on site should be collected, handled and disposed of properly
to avoid affecting the water quality of the nearby WSRs. The proper waste
management measures are detailed in Section 7.2.
Sewage
Generated from On-site Workforce
- The sewage from construction
work force is expected to be handled by portable chemical toilets if the
existing toilets in the Project site are not adequate. Appropriate and
adequate portable toilets should be provided by licensed contractors who
will be responsible for appropriate disposal and maintenance of these
facilities.
Soil
Remediation Activities
- Mitigation measures will need
to be implemented during the currently identified soil remediation activities.
If further land contamination investigation results (at CLP secondary
substation during Phase I and at locations S1 to S6 during Phase II) confirm
the needs for further soil remediation prior to demolition of the Existing
Crematorium, relevant water quality mitigation measures (in addition to
the current RAP) will need to be identified and implemented by the contractor.
In addition, the mitigation measures recommended for minimizing water
quality impacts for construction and demolition run-off and drainage as
well as for general construction and demolition activities should also
be adopted where applicable.
- In order to avoid impacts
on water quality during further remedial works, care will be taken to
minimise the mobilisation of sediment during excavation and transport.
Measures to be adopted will be based on the recommendations set out in
Practice Note for Professional Persons ProPECC PN1/94 “Construction
Site Drainage”. The results of the site investigation suggest that
there is unlikely to be any requirement for dewatering of excavations,
since groundwater was not encountered in any of the exploratory holes.
- The contractor carrying out
the remedial works will be required to submit a method statement detailing
the measures to be taken to avoid water quality impacts. Typical measures
would include:
- Carry out the works during the
dry season (i.e. October to March) if possible
- Use bunds or perimeter drains
to prevent run-off water entering excavations
- Sheet or otherwise cover excavations
whenever rainstorms are expected to occur
- Minimise the requirements for
stockpiling of material and ensure any stockpiles are covered
- Temporary on-site stockpiling
of contaminated materials should be avoided, all excavated contaminated
soils/materials should be disposed of on a daily basis
- Ensure that any discharges to
storm drains pass through an appropriate silt trap
Operation Phase
- While the sewage generation
in the New Crematorium (28 m3 per day) is estimated to be doubled
that of the Existing Crematorium (14 m3 per day), the quantitative
increase in sewage generation is not substantial. At this stage the actual
location of public sewerage connection in the New Crematorium has not
been fixed yet. However, Arch SD will, during detail design stage, ensure
the public sewer where the connection will be made is capable of handling
the extra sewage (i.e., 14 m3 per day) generated by the New
Crematorium. Given that this extra quantity is not substantial, it is
expected that the sewerage system of the corresponding Government Sewage
Treatment Work will be able to accommodate the loading, and hence no adverse
impacts to the receiving water body would result.
10. HAZARD
TO LIFE
10.1 Introduction
- The EIA has recommended the
safety measures to be undertaken during the operation phase of the Project.
The following sections outlines the relevant requirements.
10.2 Recommended
Safety Measures
Fuel Tanks Design
- The total design capacity
(34,000 L) of the fuel tanks in New Crematorium is larger than that in
Existing Crematorium (9,000 L). However, the total capacity in New Crematorium
is substantially lower than the threshold of 10,000 tones or approximately
12,000,000 L, which is considered as potential hazardous installations
for petrol filling stations under the Hong Kong Planning Standards and
Guidelines (HKPSG). The purpose of increasing the capacity of the fuel
tanks is to reduce the frequency of refilling from once per 10 days in
the Existing Crematorium to once per month in the New Crematorium. With
less frequent refilling, the associated potential hazards and disturbance
to normal operation can be significantly reduced.
- In addition, the following
safety provisions are included in the fuel tank designs of the New Crematorium:
Underground
Fuel Tank for Cremators (30,000 L)
- The underground fuel tank will
be buried underground in concrete chamber with vent pipe (vent pipe outlet
will be at a level about 4 m above ground)
Daily Service
Fuel Tank for Cremators and Fuel Tank for Emergency Generator (2,000 L each)
- For generator, vent pipe with
outlet will be at a distance of 1.5 m from other air intake louvers and
public access
- For cremators installation,
the daily services fuel tank will be located at roof top
- Door louvers equipped with electro-thermal
link will be provided at the fuel tank room (with door sill) for natural
ventilation
- Fire services installations
including heat detection system, auto-spray unit and sand buckets will be
provided for genset room
- Quick closing mechanism (fuel
shut off valve) will be installed outside the fuel tank room of generator
to cut the diesel supply in case of fire at fuel tank room /generator room
Fuel Storage
and Transportation
- The storage, transportation
and handling of diesel fuel is under the control of Dangerous Goods Ordinance
(DGO) (Cap 295) and compliance with DGO requirements should be ensured.
Diesel leaks from the diesel fuel tanks or pipework systems may seep into
the ground and enter chambers such as tunnels, drains and sewers. The
undetected build-up of diesel in a confined space will create a fire hazard.
The following safety measures should be observed around the diesel storage
tanks during operation of the New Crematorium:
- Inventory check should be conducted
by staff regularly to identify any signs of fuel leakage
- Regular visual inspections to
detect any early signs of fuel spillage
- Precautionary exercises, including
fire drills, should be regularly undertaken to enhance staff capability
to handle emergencies
DG Storage
- The design of DG store and
its operation must comply with the requirements set in Cap 295. Precautionary
measures mentioned below should also be followed, when relevant chemical
is stored at the dangerous goods storage:
Handling
and Labeling
- Obtain details for the handling,
storage and control of impurities and spills from supplier or manufacturer
(e.g. MSDS(1)).
- Obtain details of the chemical
composition of the substances, and correct treatment with eyes, skin, ingestion,
etc from the supplier or manufacturer (usually available in a MSDS)
- Ensure the correct and complete
labelling and classification of chemical substances and guidelines are adopted
(see Labour Department’s reference booklet on “Labelling and Classification
of Dangerous Substances Commonly used in Industry”)
- Ensure that the information
is up to date, provided to the relevant staff, and easily accessible in
case of emergency in accordance with the site safety guidelines
- Register dates (receiving date,
manufacturing date, expiry date, shelf life whereas applicable) and quantities
of all purchases on receipt to minimise surplus and spoilt orders
Containers
for Storage of Chemicals and Dangerous Goods (DGs)
- The following practices shall
be followed in ensuring the use of suitable containers for chemicals.
- Designed to minimise spills
- Ensure container is appropriate
for its contents, resistant to corrosions, maintained in good conditions
and securely closed
- Provide proper labelling
Storage Requirements
- The following practices shall
be followed in ensuring suitable storage (including temporary store for
goods to be delivered) and transportation of chemicals and DGs.
- No smoking in storage areas
- No naked light and no heating
equipment shall be used in any store.
- No electrical equipment shall
be used or installed in any store other than equipment of a type approved
by the Authority.
- There shall be at all times
conspicuously displayed outside any store a notice, in English and Chinese,
prohibiting smoking and the use of naked light
- Segregate chemical substances
to prevent reaction and contamination
- Use proper racks, storage bins
and shelves to contain leaks
- Storage areas must be locked
to prevent unauthorised access, clearly labelled and solely for the storage
(except for the temporary store for goods to be delivered) of chemicals/dangerous
goods
- Adequate ventilation in storage
areas as necessary
- Provide appropriate equipment
and manpower to avoid the likelihood of spillage
- DGs must be stored in the designated
stores and the storage quantities must be within limits
- All containers shall be kept
upright to minimise the likelihood of spillage
Handling
and Spill Prevention
- The following practices shall
be followed in ensuring suitable handling and spill prevention of chemicals
and dangerous goods:
- Follow the safety instructions
provided by site management and chemical label
- Do not misuse or interfere with
safety equipment or appliance provided
- Do not smoke, eat or drink in
any place where chemical substances / DGs are stored or used
11. ENVIRONMENTAL
AUDITING
11.1 Auditing/Inspection
Approach
- Site Inspections provide a
direct means to trigger and enforce the specified environmental protection
and pollution control measures. They shall be undertaken routinely to
inspect the construction activities in order to ensure that appropriate
environmental protection and pollution control mitigation measures are
properly implemented. With well defined pollution control and mitigation
specifications and a well established site inspection, deficiency and
action reporting system, the site inspection is one of the most effective
tools to enforce the environmental protection requirements on the Project
site.
- The ET Leader shall be responsible
for formulation of the environmental site inspection, deficiency and action
reporting system, and for carrying out the site inspection works. He shall
submit a proposal endorsed by ICE on the site inspection, deficiency and
action reporting procedures within 21 days of the construction/demolition
contract commencement to the Contractor for agreement and to the AR for
approval.
- Regular site inspection shall
be carried out at least once per week. The areas of inspection shall not
be limited to the environmental situation, pollution control and mitigation
measures within the site; it should also review the environmental situation
outside the works areas which is likely to be affected, directly or indirectly,
by the site activities. The ET Leader shall make reference to the following
information in conducting the inspection:
- The EIA recommendations on environmental
protection and pollution control mitigation measures (Appendix B)
- Works progress and programme
- Individual works methodology
proposals (which shall include proposal on associated pollution control
measures)
- The contract specifications
on environmental protection
- The relevant environmental protection
and pollution laws
- Previous site inspection results
- The Contractor shall keep
the ET Leader updated with all relevant information on the construction
contract necessary for him to carry out the site inspections. Inspection
results and associated recommendations for improvements to the environmental
protection and pollution works shall be submitted to ICE and the Contractor
within 24 hours after the completion of site inspection. The Contractor
shall follow the procedures and time-frame as stipulated in the environmental
site inspection, and the deficiency and action reporting system formulated
by the ET Leader, to report on any remedial measures subsequent to the
site inspection.
- Ad hoc site inspection shall
also be carried out if significant environmental problems are identified.
Inspections may also be required subsequent to receipt of an environmental
complaint, or as part of the investigation works, as stipulated in the
Event Action Plan.
11.2 Compliance
with Legal and Contractual Requirements
- There are contractual environmental
protection and pollution control requirements as well as environmental
protection and pollution control laws in Hong Kong which construction
activities must comply.
- In order that the works are
in compliance with the contractual requirements, all the works method
statements submitted by the Contractor to the AR for approval shall be
sent to the ET Leader for vetting to see whether sufficient environmental
protection and pollution control measures have been included.
- The ET Leader shall also review
the progress and programme of the works to check that relevant environmental
laws have not been violated, and that the any foreseeable potential for
violating the laws can be prevented.
- The Contractor shall regularly
copy relevant documents to the ET Leader so that the checking work can
be carried out. The document shall at least include the updated Work Progress
Reports, the updated Works Programme, the application letters for different
licence/permits under the environmental protection laws, and all the valid
licence/permit. The site diary shall also be available for the ET leader's
inspection upon his request.
- After reviewing the document,
the ET Leader shall advise the AR and the Contractor of any non-compliance
with the contractual and legislative requirements on environmental protection
and pollution control for them to take follow-up actions. If the ET Leader's
review concludes that the current status on licence/permit application
and any environmental protection and pollution control preparation works
may not cope with the works programme or may result in potential violation
of environmental protection and pollution control requirements by the
works in due course, he shall also advise the Contractor and the AR accordingly.
- Upon receipt of the advice,
the Contractor shall undertake immediate action to remedy the situation.
The AR shall follow up to ensure that appropriate action has been taken
by the Contractor in order that the environmental protection and pollution
control requirements are fulfilled.
11.3 Environmental
Complaints
- Environmental complaints shall
be referred to the ET Leader for carrying out complaint investigation
procedures. The ET Leader shall undertake the following procedures upon
receipt of the environmental complaints:
- Log complaint and date of receipt
onto the complaint database and inform the ICE immediately via the AR
- Investigate the complaint to
determine its validity, and to assess whether the source of the problem
is due to works activities
- If a complaint is valid and
due to works, identify mitigation measures
- If mitigation measures are required,
advise the Contractor accordingly
- Review the Contractor’s response
on the identified mitigation measures, and the updated situation
- If the complaint is transferred
from EPD, submit interim report to EPD after endorsement by ICE on status
of the complaint investigation and follow-up action within the time frame
assigned by EPD
- Undertake additional monitoring
and audit to verify the situation if necessary, and review that any valid
reason for complaint does not recur
- Report the investigation results
and the subsequent actions to the source of complaint for responding to
complainant (If the source of complaint is EPD, the results should be reported
within the time frame assigned by EPD)
- Record the complaint, investigation,
the subsequent actions and the results in the monthly EM&A reports
- During the complaint investigation
work, the Contractor and AR shall cooperate with the ET Leader in providing
all the necessary information and assistance for completion of the investigation.
If mitigation measures are identified in the investigation, The Contractor
shall promptly carry out the mitigation. The AR shall ensure that the
measures have been carried out by the Contractor.
12. REPORTING
12.1 General
- The following reporting requirements
for the construction and demolition phases of the Project are based upon
a paper document approach. However, the same information can be provided
in an electronic medium upon agreeing the format with the AR and EPD.
This would enable a transition from a paper/historic and reactive approach
to an electronic/real time proactive approach.
12.2 Baseline
Monitoring Report
- The ET Leader shall prepare
and submit a Baseline Monitoring Report within 10 working days of completion
of baseline monitoring. Copies of the Baseline Monitoring Report shall
be submitted to the Contractor, the ICE, the AR and the EPD. The ET Leader
shall liaise with the relevant parties on the exact number of copies they
require. The report format and baseline monitoring data format shall be
agreed with the EPD prior to submission.
- The baseline monitoring report
shall include at least the following:
- Up to half a page executive
summary
- Brief Project background information
- An updated construction programme
with milestones with milestones of environmental protection /mitigation
activities annotated
- Drawings showing locations of
the baseline monitoring stations;
- Monitoring results (in both
hard and diskette copies) together with the following information:
- Monitoring methodology
- Name of laboratory and types
of equipment used and calibration details
- Parameters monitored
- Monitoring locations
- Monitoring date, time, frequency
and duration
- Quality assurance (QA) / quality
control (QC) results and detection limits
- Details of influencing factors,
including:
- Major activities, if any, being
carried out at the site during the period
- Weather conditions during the
period
- Other factors which might affect
results
- Determination of the Action
and Limit Levels for each monitoring parameter and statistical analysis
of the baseline data, the analysis shall conclude if there is any significant
difference between control and impact stations for the parameters monitored
(if applicable)
- Revisions for inclusion in the
EM&A Manual
- Comments and conclusions
12.3 Monthly
EM&A Reports
- The results and findings of
all EM&A work required in the Manual shall be recorded in the monthly
EM&A reports prepared by the ET Leader. The EM&A report shall
be prepared and endorsed by ICE and submitted within 10 working days of
the end of each reporting month, with the first report due the month after
construction commences. Each monthly EM&A report shall be submitted
to the following parties: the Contractor, the ICE, the AR and the EPD.
Before submission of the first EM&A report, the ET Leader shall liaise
with the parties on the required number of copies and format of the monthly
reports in both hard copy and electronic medium.
- The ET Leader shall review
the number and location of monitoring stations and parameters to monitor
every six months or on as needed basis in order to cater for the changes
in surrounding environment and nature of works in progress.
12.4 First
Monthly EM&A Report
- The first monthly EM&A
report shall include at least but not limited to the following:
- 1-2 pages Executive Summary
- Breaches of Action/Limit (AL)
levels
- Complaint Log
- Notification of any summons
and successful prosecutions
- Reporting Changes
- Future key issues
- Basic Project Information
- Project organisation including
key personnel contact names and telephone numbers;
- Construction Program with fine
tuning of construction activities showing the inter-relationship with environmental
protection/mitigation measures for the month
- Management structure
- Works undertaken during the
month
- Environmental Status
- Works undertaken during the
month with illustrations (such as location of works, percentage fines in
the fill material used)
- Drawing showing the Project
area, any environmental sensitive receivers and the locations of the monitoring
and control stations
- Summary of EM&A requirements
- All monitoring parameters
- Environmental quality performance
limits (Action and Limit Levels)
- Event-Action Plans
- Environmental mitigation measures,
as recommended in the Project EIA study final report
- Environmental requirements in
contract documents
- Implementation Status
Advice on the implementation
status of environmental protection and pollution control/mitigation measures
including measures for ecological and visual impacts, as recommended in the
Project EIA study report, summarised in the updated implementation schedule.
- Monitoring Results
To provide monitoring
results (in both hard and diskettes copies) together with the following information:
- Monitoring methodology
- Name of laboratory and types
of equipment used and calibration details
- Parameters monitored
- Monitoring locations
- Monitoring date, time, frequency
and duration
- Weather conditions during the
period
- Graphical plots of the monitored
parameters in the month annotated against
- The major activities being carried
out on site during the period
- Weather conditions that may
affect the results
- Any other factors which might
affect the monitoring results
- QA/QC results and detection
limits
- Report on Non-compliance, Complaints,
Notification of Summons and Successful Prosecutions
- Records of all non-compliance
(exceedances) of the environmental quality performance limits (Action and
Limit Levels)
- Record of all complaint received
(written or verbal) for each media, including locations and nature for complaints
investigation, liaison and consultation undertaken, actions and follow-up
procedures taken, results and summary
- Record of all notification of
summons and successful prosecutions for beaches of the current environmental
protection/pollution control legislation, including locations and nature
of the breaches, investigation, follow-up actions taken, results and summary
- Review of the reasons for and
the implications of non-compliance complaints, summons and prosecutions
including review of pollution sources and working procedures
- Description of the actions taken
in the event of non-compliance and deficiency reporting and any follow-up
procedures relating to earlier non-compliance
- Others
- An account of the future key
issues as reviewed from the works program and work method statements
- Advice on the solid and liquid
waste management status
- Summary on the implementation
status of environmental mitigation measures, proactive environmental mitigation
measures, environmental licencing and permits status, environmental monitoring
schedule and complaint log summarising the EM&A of the period
12.5 Subsequent
Monthly EM&A Reports
- The subsequent monthly EM&A
reports shall include the followings:
- Executive Summary (1-2 pages)
- Breaches of AL levels
- Complaint Log
- Notification of any summons
and successful prosecutions
- Reporting Changes
- Future key issues
- Environmental Status
- Construction program with fine
tuning of construction activities showing the inter-relationship with environmental
protection/mitigation measures for the month
- Works undertaken during the
month with illustrations including key personnel contact names and telephone
numbers
- Drawing showing the Project
area, any environmental sensitive receivers and the locations of the monitoring
and control stations
- Implementation Status
Advice on the implementation
status of environmental protection and pollution control/mitigation measures
including measures for ecological and visual impacts, as recommended in the
Project EIA study report, summarised in the updated implementation schedule.
- Monitoring Results
To provide monitoring
results (in both hard and diskettes copies) together with the following information:
- Monitoring methodology
- Name of laboratory and types
of equipment used and calibration details
- Parameters monitored
- Monitoring locations
- Monitoring date, time, frequency
and duration
- Weather conditions during the
period
- Graphical plots of the monitored
parameters in the month annotated against
- The major activities being carried
out on site during the period
- Weather conditions that may
affect the results
- Any other factors which might
affect the monitoring results
- QA/QC results and detection
limits
- Report on Non-compliance, Notification
of Summons and Successful Prosecutions
- Records of all non-compliance
(exceedances) of the environmental quality performance limits (Action and
Limit Levels)
- Record of all complaint received
(written or verbal) for each media, including locations and nature for complaints
investigation, liaison and consultation undertaken, actions and follow-up
procedures taken, results and summary
- Record of all notification of
summons and successful prosecutions for beaches of the current environmental
protection/pollution control legislation, including locations and nature
of the breaches, investigation, follow-up actions taken, results and summary
- Review of the reasons for and
the implications of non-compliance complaints, summons and prosecutions
including review of pollution sources and working procedures
- Description of the actions taken
in the event of non-compliance and deficiency reporting and any follow-up
procedures relating to earlier non-compliance
- Others
- An account of the future key
issues as reviewed from the works program and work method statements
- Advice on the solid and liquid
waste management status
- Appendix
- Graphical plots of trends of
monitored parameters at key stations over the past four reporting periods
for representative monitoring stations annotated against the following:
- Major activities being carried
out during the period
- Weather conditions during the
period
- Any other factors that might
affect the monitoring result
- Monitoring schedule for the
present and next reporting period
- Cumulative statistics on complaints,
notification of summons and successful prosecutions
- Outstanding issues and deficiencies
- Details of complaints, outstanding
issues and deficiencies
12.6 Quarterly
EM&A Summary Reports
- The quarterly EM&A summary
report which should generally be around five pages (including about three
of text and tables and two of figures) should contain at least the following
listed information:
- Up to half page executive summary
- Basic Project information including
a synopsis of the Project organisation, program, contacts of key management,
and a synopsis of work undertaken during the quarter
- A brief summary of EM&A
requirements including:
- Monitoring parameters
- Environmental quality performance
limits (Action and Limit Levels)
- Environmental mitigation measures,
as recommended in the Project EIA study final report
- Advice on the implementation
status of environmental protection and pollution control/mitigation measures
as recommended in the Project EIA study report, summarised in the updated
implementation schedule
- Drawing showing the Project
area, any environmental sensitive receivers and the locations of the monitoring
and control stations
- Graphical plots of the trends
of monitored parameters over the past four months (the last month of the
previous quarter and the present quarter) for representative monitoring
stations annotated against:
- The major activities being carried
out on site during the period
- Weather conditions during the
period
- Any other factors which might
affect the monitoring results
- Advice on the solid and liquid
waste management status
- A summary of non-compliance
(exceedances) of the environmental quality performance limits (Action and
Limit levels)
- A brief review of the reasons
for and the implications of non-compliance including review of pollution
sources and working procedures
- A summary description of the
actions taken in the event of non-compliance and any follow-up procedures
related to earlier non-compliance
- A summary record of all complaints
received (written or verbal) for each media, liaison and consultation undertaken,
actions and follow-up procedures taken
- A summary record of notification
of summons and successful prosecutions for breaches of the current environmental
protection/pollution control legislation, locations and nature of the breaches,
investigation, follow-up actions taken and results
- Comments (e.g. effectiveness
and efficiency of the mitigation measures), recommendations (e.g. any improvement
in the EM&A program) and conclusions for the quarter
- Proponents contacts and any
hotline telephone number for the public to make enquiries
12.7 Final
EM&A Summary Report
- The termination of EM&A
program for the construction and demolition works of the Project shall
be determined on the following basis:
- Completion of all construction
and demolition activities and insignificant environmental impacts of the
remaining outstanding construction works
- Trends analysis to demonstrate
the narrow down of monitoring exceedances due to construction/demolition
activities and the return of ambient environmental conditions in comparison
with baseline data
- No environmental complaint and
prosecution involved
- The proposed termination may
be required to consult related local community such as village representative/committee
and/or District Board and the proposal should be endorsed by the ICE.
AR and the Project proponent prior to final approval from EPD.
- The final EM&A summary
report should include, inter alia, the following:
- An executive summary
- Basic Project information including
a synopsis of the Project organisation, program, contacts of key management,
and a synopsis of work undertaken during the entire construction and demolition
period
- A brief summary of EM&A
requirements including:
- Monitoring parameters
- Environmental quality performance
limits (Action and Limit Levels)
- Environmental mitigation measures,
as recommended in the Project EIA study final report
- Advice on the implementation
status of environmental protection and pollution control/mitigation measures,
as recommended in the Project EIA study report, summarised in the updated
implementation status proformas
- Drawing showing the Project
area, any environmental sensitive receivers and the locations of the monitoring
and control stations
- Graphical plots of the trends
of monitored parameters over the construction and demolition period for
representative monitoring stations annotated against:
- The major activities being carried
out on site during the period
- Weather conditions during the
period
- Any other factors which might
affect the monitoring results
- The return of ambient environmental
conditions in comparison with baseline data
- Compare the EM&A data with
the EIA predictions and annotate with expansions for any discrepancies
- Provide clear-cut decisions
on the environmental acceptability of the Project with reference to the
specific impact hypothesis
- Advice on the solid and liquid
waste management status
- a summary of non-compliance
(exceedances) of the environmental quality performance limits (Action and
Limit levels)
- A brief review of the reasons
for and the implications of non-compliance including review of pollution
sources and working procedures
- A summary description of the
actions taken in the event of non-compliance and any follow-up procedures
related to earlier non-compliance
- A summary record of all complaints
received (written or verbal) for each media, liaison and consultation undertaken,
actions and follow-up procedures taken
- Review the monitoring methodology
adopted and with the benefit of hindsight, comment on its effectiveness
(including cost effectiveness)
- A summary record of notification
of summons and successful prosecutions for breaches of the current environmental
protection/pollution control legislation, locations and nature of the breaches,
investigation, follow-up actions taken and results
- Review the practicality and
effectiveness of the EIA process and EM&A program (e.g. effectiveness
and efficiency of the mitigation measures), recommended any improvement
in the EM&A program
- A conclusion to state the return
of ambient and/or the predicted scenario as per the EIA findings
12.8 Data
Keeping
- The site document such as
the monitoring field records, laboratory analysis records, site inspection
forms etc. are not required to be included in the monthly EM&A reports
for submission. However, the document shall be well kept by the ET Leader
and be ready for inspection upon request. All relevant information shall
be clearly and systematically recorded in the document. The monitoring
data shall also be recorded in magnetic media form, and the software copy
can be available upon request. All the documents and data shall be kept
for at least one year after completion of the construction contract.
12.8 Interim
Notification of Environmental Quality Limit Exceedances
- With reference to Event/Action
Plans, when the environmental quality limits are exceeded, the ET Leader
shall immediately notify the AR, ICE and EPD, as appropriate by issuing
the duly completed Notification of Exceedance Form. The notification shall
be followed up with advice to EPD after endorsement of ICE, on the results
of the investigation, proposed action and success of action taken, with
any necessary follow-up proposals. The Notification of Exceedance Form
is shown in Appendix E.