1.1.1
Project Background
At present, traffic queues are already
observed on the northern approach of Pok Oi Roundabout (POR) during the evening peak period and the
southern approach at both morning and evening peaks. The situation will likely deteriorate
further when the nearby developments are completed. The tailback of traffic onto the
southbound carriageway on the northern approach to POR may block the through
traffic from Tai Lam Tunnel / New Territories (NT) North to Tuen
Mun / Tin Shui Wai /
The Technical
Feasibility Statement (TFS) for the Improvement to Pok
Oi Interchange was completed in November 2005. In September 2006, Highways Department (HyD) commissioned Mott Connell Ltd (MCL) to undertake the Traffic Impact Assessment and Alignment Design Study (Agreement No. WD
3/2006). The Study reviewed the preliminary improvement layouts
proposed in the TFS, presented recommendations on preferred alignment,
configuration and layout, and investigated the traffic carrying capacities of
the improvement scheme.
An application under the Environmental Impact Assessment Ordinance
(EIAO) for an Environmental Impact
Assessment (EIA) Study Brief was submitted by HyD
in May 2007 with the EIA Study Brief
(No. ESB-166/2007) issued in July 2007.
ERM-Hong
Kong, Ltd (ERM), supported by Halcrow China
Ltd (Halcrow), has been commissioned by HyD to undertake the Improvement
to Pok Oi Interchange –
Environmental Impact Assessment Study (hereafter referred to as “the
Assignment”) under Agreement No. WD 6/2007. As part of the Assignment, an EIA Study
has been undertaken in accordance with the EIA
Study Brief (No. ESB-166/2007) and the Environmental Monitoring and Audit
(EM&A) requirements are presented in this EM&A Manual.
1.1.2
Project Location and Scope
The Project is located at Pok Oi Interchange (POI) in the
Yuen Long region of the
The scope of the Project is as follows:
·
provision
of a single lane flyover (approximately 140m in length) adjacent to the
northbound carriageway of Pok Oi
Flyover (POF) (denoted as Flyover A in Figure 1.1 and subsequent
sections of this report);
·
construction
of a slip road (approximately 410m in length) connecting the northbound carriageway
of the ground level road of Yuen Long Highway (YLH) on the southern arm of POR
to the proposed flyover (denoted as Slip Road A in Figure 1.1 and
subsequent sections of this report);
·
construction
of a slip road (approximately 100m in length) connecting the proposed flyover
to the northbound carriageway of the ground level section of YLH on the
northern arm of POR (denoted as Slip Road B in Figure 1.1 and subsequent
sections of this report);
·
construction
of a slip road (approximately 280m in length) connecting the southbound
carriageway of POF to the southbound carriageway of the ground level section of
YLH on the southern arm of POR (denoted as Slip Road C in Figure 1.1 and
subsequent sections of this report);
·
resurfacing
and re-marking of a stretch of the southbound carriageway (approximately 280m
in length) of the ground level section of YLH on the northern arm of POR to
increase the number of traffic lanes on the carriageway from three to four
(denoted as Road Resurfacing and Remarking A in Figure 1.1 and
subsequent sections of this report);
·
resurfacing
and re-marking of a stretch of the northbound carriageway (approximately 470m
in length) of the ground level section of YLH on the northern arm of POR
(denoted as Road Resurfacing and Remarking B in Figure 1.1 and
subsequent sections of this report);
·
construction
of a segregated left-turn lane (approximately 110m in length) at the northern
arm of POR (denoted as
·
associated ancillary works.
The proposed alignment of the Project is
presented in Figure 1.1.
The Project qualifies as a Designated
Project under Item A.1 of Part 1, Schedule 2 of the EIAO and the construction and operation of the Project will require
an Environmental Permit (EP).
The overall objectives of the EIA Study
are to provide information on the nature and extent of environmental impacts
arising from the Project and related activities that take place concurrently;
to recommend appropriate mitigation measures to control the potential
environmental impacts so that it complies with the requirements of the Technical Memorandum on Environmental Impact
Assessment Process of Environmental Impact Assessment Ordinance (EIAO-TM), and to confirm the
environmental acceptability of the Project.
1.1.3
Construction Programme
The construction activities are scheduled
to commence in December 2009 and complete in December 2011. A preliminary outline construction programme
is provided in Annex A.
1.2
Purpose of the
EM&A Manual
The purpose of this EM&A Manual is to
guide the set up of an EM&A programme to ensure compliance with the 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
EM&A Manual outlines the environmental monitoring and auditing works for
both construction and operation phases of the Project. It provides systematic procedures for
the monitoring and auditing of potential environmental impacts that may arise
from the works.
This EM&A Manual contains the
following information:
·
Responsibilities
of the Contractor, the Engineer or Engineer’s Representative (ER),
Environmental Team (ET) and Independent Environmental Checker (IEC) with
respect to the environmental monitoring and audit requirements during
construction phase;
·
Project
organization for the Project;
·
Requirements
with respect to the construction programme schedule and the necessary
environmental monitoring and audit programme to track the varying environmental
impact;
·
Details
of the methodologies to be adopted, including all field laboratories and
analytical procedures, and details on quality assurance and quality control
programme;
·
Definition
of Action and Limit levels;
·
Establishment
of Event and Action plans;
·
Requirements
for reviewing pollution sources and working procedures required in the event of
non-compliance with the environmental criteria and complaints;
·
Requirements
for presentation of environmental monitoring and audit data and appropriate
reporting procedures; and
·
Requirements
for review of EIA predictions and the effectiveness of the mitigation
measures/environmental management systems and the EM&A programme.
This EM&A Manual is a dynamic document
that should be reviewed regularly and to be updated (as necessary) during the
implementation of the Project.
For the purpose of this EM&A Manual,
the “Engineer” refers to the Engineer as defined in the Contract and the ER, in
case where the Engineer’s power have been delegated to the ER, in accordance
with the Contract. The ET Leader,
who should be responsible for and in charge of the ET, refers to the person delegated the role of executing the EM&A
requirements. The IEC should
undertake the auditing role.
The roles and responsibilities of the various
parties involved in the construction phase EM&A programme are outlined
below. The organization and lines of communication with respect to
environmental management for the Project are shown in Figure 1.3.
The leader of the Environmental Team (ET)
should be an independent party from the Contractor and should possess at least
7 years experience of EM&A and have relevant professional qualifications,
which should include being an Accredited Monitoring Professional of HKIEIA,
subject to approval of the Environmental Protection Department (EPD). The Independent Environmental Checker
(IEC) should have the same experience and professional qualifications as
stipulated above for the ET Leader.
The duties and responsibilities of
respective parties are as follows:
Engineer or Engineer’s Representative (ER)
·
Supervise
the Contractor’s activities and ensure that the requirements in the EM&A
Manual are fully complied with;
·
Monitor
the Contractor’s compliance with Contract Specifications, including the
implementation and maintenance of environmental mitigation measures and other
aspects of the EM&A programme;
·
Monitor
the implementation of EM&A programme;
·
Inform
the Contractor when action is required to reduce impacts in accordance with the
EAPs or protocols or those in the Contract
Specifications in the event of exceedance or
complaint;
·
Participate
in joint site inspection undertaken by the ET; and
·
Adhere
to the procedures for carrying out complaint investigation in accordance with
Section 9 of this EM&A Manual.
Contractor
·
Appoint
an ET to undertake monitoring, laboratory analysis and reporting of the EM&A requirements outlined in this Manual;
·
Ensure
thorough implementation of mitigation measures as required;
·
Provide
assistance to the ET in carrying out monitoring and preparing reporting;
·
Accompany
joint site inspections undertaken by ET and implement the corrective /
follow-up actions / recommendations instructed by the Engineer;
·
Follow
the procedures stipulated in the agreed EAPs in the
event of exceedance or complaint;
·
Submit
proposals on mitigation measures in case of exceedances
of Action and Limit levels in accordance with the EAPs;
·
Implement
measures to educe impact whenever Action and Limit levels are exceeded;
·
Report
all findings of site inspections and corrective / follow-up actions taken to
the ER; and
·
Adhere
to the procedures for carrying out complaint investigation in accordance with
Section 9 of this EM&A Manual.
Environmental Team (ET)
·
Monitor the various environmental parameters as required by this
or subsequent revisions to the Manual;
·
Provide
advice on all environmental issues to the Contractor;
·
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 review the programme of works, in order to
anticipate environmental issues that may require mitigation before the problem
arises;
·
Audit
the environmental monitoring data and report the status of general site
environmental conditions and of the implementation of mitigation measures
resulting from site inspections;
·
Follow
the procedures stipulated in the agreed EAPs in the
event of exceedance or complaint;
·
Report
the EM&A results and wider environmental issues and conditions to the IEC,
Contractor, ER, and EPD;
·
Prepare
EM&A Reports as required in the EM&A Manual
·
Recommend
suitable mitigation measures to the Contractor in the case of exceedance of Action and Limit levels in accordance with
the EAPs; and
·
Adhere
to the procedures for carrying out complaint investigation in accordance with
Section 9 of this EM&A Manual.
Independent Environmental Checker (IEC)
·
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);
·
Report
the audit results to the ER and EPD in parallel;
·
Review
the EM&A Reports submitted by the ET;
·
Review
the proposal on mitigation measures submitted by the Contractor in accordance
with the EAPs; and
·
Adhere
to the procedures for carrying out complaint investigation in accordance with
Section 9 of this EM&A Manual.
Sufficient and suitably qualified
professional and technical staff should be appointed by the respective parties
to ensure full compliance with their duties and responsibilities, as required
under the EM&A programme for the duration of the Project.
1.4
Structure of the EM&A Manual
Following this introductory section, the
remainder of the Manual is set out as follows:
·
Section 2 – Sets out general requirements of EM&A
programme;
·
Section 3 – Details auditing requirements for air quality;
·
Section 4 – Details methodology and criteria, monitoring
equipment, locations for baseline and impact monitoring and mitigation measures
for noise, compliance assessment and EAP;
·
Section 5 – Details auditing requirements for water quality;
·
Section 6 – Detail auditing requirements for waste management;
·
Section 7 – Details baseline monitoring, auditing requirements
and mitigation measures for landscape and visual impact, compliance assessment
and EAP;
·
Section 8 – Describes scope and frequency of environmental
site audit;
·
Section 9 – Details protocols in handling environmental
enquires and complaints; and
·
Section 10 – Details the EM&A reporting requirements.
General requirements of the EM&A
programme for the Project are presented in this section. The scope of the programme is developed
with reference to the findings and recommendations of the EIA Report.
2.2
Objectives of the
EM&A Programme
The potential environmental impacts
associated with the Project have been assessed and described in the EIA
Report. The EIA Report also
specifies the mitigation measures required to comply with the environmental
criteria. These mitigation measures
and their implementation requirements are presented in the Implementation
Schedule (see Annex B). The EIA recommends that an EM&A
programme be implemented to assess the effectiveness of measures and to confirm
that there will be no adverse environmental impacts during all phases of the
Project. It is also recommended
that regular site audits be undertaken during construction and operation phase
to check whether good site practices are properly implemented to prevent
adverse environmental impacts. Any
activities that have a potential to cause adverse environmental impacts are
identified before the adverse impacts occurred. Ad-hoc visits should also be undertaken
in response to any complaints or reported non-compliance with environmental
standards in order to enable prompt actions are taken to address the impacts.
This Manual provides details of the
EM&A requirements that have been recommended in the EIA Report. The main objectives of the EM&A
programme are to:
·
verify
the environmental impacts predicted in the EIA Report;
·
monitor
the performance of the Project and the effectiveness of mitigation measures;
·
determine
Project compliance with regulatory requirements and standards;
·
provide
an early indication should any of the environmental control measures or
practices fail to achieve the required standards;
·
take
remedial action if unexpected problems or unacceptable impacts arise;
·
provide
a database against which any short or long term environmental impacts of the Project
can be determined; and
·
provide data against which environmental audits may be
undertaken.
2.3
Scope of the
EM&A Programme
The scope of the EM&A Programme is to:
·
Establish
baseline noise levels at designated locations;
·
Implement
impact monitoring programmes for construction noise;
·
Implement
inspection and audit programmes for air quality, noise, water quality, waste
management; and landscape and visual issues;
·
Liaise
with, and provide environmental advice (as requested or when otherwise
necessary) to construction site staff on the comprehension and consequences of
the environmental monitoring data and exceedances;
·
Identify
and resolve environmental issues and other functions as they may arise from the
works;
·
Check
and advice the Contractor's overall environmental performance, the
implementation of Event and Action Plans (EAPs), and
remedial actions taken to mitigate adverse environmental impacts as they may
arise from the works;
·
Conduct
monthly reviews of monitored impact data as the basis for assessing compliance
with the defined criteria and to ensure that necessary mitigation measures are
identified and implemented, and to undertake additional ad hoc monitoring and
auditing as required by special circumstances;
·
Evaluate
and interpret all environmental monitoring data to provide an early indication
should any of the environmental control measures or practices fail to achieve
the acceptable standards, and to verify the environmental impacts assessed in
the EIA Study;
·
Manage
and liaise with other individuals or parties concerning other environmental
issues deemed to be relevant to the construction process;
·
Conduct
regular site inspections to assess:
§
the
level of the Contractor’s
general environmental awareness;
§
the Contractor’s
implementation of the recommendations in the EIA Report;
§
the
Contractor’s performance as
measured by the EM&A programme;
§
the
need for specific mitigation measures to be implemented or the continued usage
of those previously agreed;
§
to
advise the Site Staff of any identified potential environmental issues; and
·
Submit
Monthly EM&A Reports which summarises environmental monitoring and auditing
data, with full interpretation illustrating the acceptability or otherwise of
any environmental impacts and identification or assessment of the
implementation status of agreed mitigation measures.
The environmental issues associated with
the construction phase of the Project will be mitigated through the monitoring and
mitigation measures specified in the EIA Report and this EM&A Manual.
During the construction phase, air
quality, noise, water quality, waste arising, landscape and visual issues will
be subjected to EM&A, including noise monitoring.
The monitoring of the effectiveness of the
mitigation measures will be achieved through the environmental monitoring
programme as well as through site inspections. The inspections will include within
scope, mechanisms to review and assess the implementation of the recommended
mitigation measures, and that the timely resolution of received complaints are
managed and controlled in a manner consistent with the recommendations given in
the EIA Report and the EM&A Manual.
The environmental monitoring works
throughout the construction period and the first year after commencement of
operation of the Project should be carried out in accordance with the EM&A
Manual and reported by the ET.
Monitoring should be conducted at the chosen and agreed representative
sensitive receivers.
2.6
Action and Limit
(A/L) Levels
Action and Limit (A/L) Levels are defined
levels for impact recorded by the environmental monitoring works, which
represent levels at which a prescribed response is required. These levels are described in the
principle below and later quantitatively defined in the relevant sections of
the EM&A Manual:
·
Action
Level – beyond which there is a clear indication of a deteriorating ambient
environment for which appropriate remedial actions are likely to be necessary
to prevent environmental quality from falling outside the Limit Levels, which
will be unacceptable.
·
Limit
Level – statutory limits stipulated in the relevant pollution control ordinances,
Hong Kong Planning Standard Guidelines, or Environmental Quality Objectives
established by the EPD. If these
are exceeded, works should not proceed without appropriate remedial action,
including a critical review of plant and working methods.
The purpose of the EAPs
is to provide, in association with the environmental monitoring activities,
procedures for ensuring that if any significant environmental impacts occur in
the form of exceedance of A/L Levels identified in
the EM&A programme, cause(s) will be quickly identified and remediated.
The ET should undertake environmental
audit of the compliance with stipulated procedures and site inspections of
on-site practices. The primary objective
is to assess the effectiveness of the implementation of the environmental
mitigation measures as recommended in the EIA Report and the EM&A Manual.
Whilst environmental audit will complement
the environmental monitoring activity with regard to the effectiveness of dust
suppression, noise attenuation and vibration control, the criteria against
which the audit should be derived from the clauses within the Contract, which
seek to enforce the recommendations of the EIA Report and the EM&A Manual.
The findings of the environmental audit
and site inspection should be made known to the Contractor at the time of the
audit / inspection to enable rapid resolution of identified non-compliances or
observations. Non-compliances,
observations, the corrective / follow-up actions undertaken will be reported in
the Monthly EM&A Reports.
2.9
Enquiries,
Complaints and Requests for Information
Enquiries, complaints and requests for
information will be expected from a wide range of individuals and organizations
including members of the public, government departments, nearby residents,
press and community groups.
All enquiries concerning the environmental
effects of the construction works, irrespective of the channel of receipt, will
be directed to the Contractor, and copied to the ER and Highways Department (HyD).
Procedures for handling enquiry and complaints should follow the
procedures set out in Section 9.
In all cases, the complainant should be
notified of the findings, and environmental audit and site inspection should be
put in place to minimize the reoccurrence of similar problems.
During the construction phase,
Environmental Baseline Monitoring Report, Monthly EM&A Reports, Quarterly EM&A Summary Reports and Final EM&A Review Report should
be prepared and certified by the ET Leader and verified by IEC prior to
submission to the Contractor and HyD. In accordance with Annex 21 of the EIAO-TM, a copy of the monthly,
quarterly summary and final review EM&A reports should be made available to
the Director of Environmental Protection.
Details of reporting requirement and submission schedule should be in
accordance with the guidelines set out in Section
10.
2.11
Change or
Cessation of EM&A Programme
The ET should carry out the EM&A
programme in accordance with the EM&A Manual throughout the construction
and operational phases of the Project.
Any change or cessation of the EM&A programme, or any part of it,
should be justified by the ET Leader and verified by the IEC as conforming to
the requirements set out in the EM&A Manual, and should be submitted to the
EPD for approval.
No adverse air quality impact is
anticipated during the construction phase with the implementation of good site practices
and appropriate mitigation measures. The EIA Report has identified that
construction dust is the only concern as the construction scale is relatively
small, and dust emission from the site could be audited during the regular site
inspection.
In order to ensure no adverse air quality
impact will arise from the construction of the Project, it is necessary to
undertake regular environmental audits and site inspections to ensure those
recommended mitigation measures were properly implemented. The requirements of the environmental
audit programme were set out in Section 8
of the Manual.
The audit programme will verify the
implementation status and evaluate the effectiveness and stability of the mitigation
measures.
The EIA Report has recommended dust
control and mitigation measures.
The Contractor should be responsible for the design and implementation
of these measures.
The dust control measures stipulated in
the Air Pollution Control (Construction
Dust) Regulation should be incorporated in the contract
specifications. These should be
implemented during construction in order to reduce dust impact produced by the
site activities. Typical control
measures are:
• skip hoist for material transport should be
totally enclosed by impervious sheeting;
• every vehicle should be
washed to remove any dusty materials from its body and wheels before leaving
the construction site;
• the area where vehicle
washing takes place and the section of the road between the washing facilities
and the exit point should be paved with concrete, bituminous materials or hardcores;
• where a site boundary adjoins a road, streets or
other accesses to the public, hoarding of not less than 2.4 m high from ground
level should be provided along the entire length except for a site entrance or
exit;
• every stock of more than
20 bags of cement should be covered entirely by impervious sheeting placed it
an area sheltered on the top and the 3 sides;
• all dusty materials should be sprayed with water
prior to any loading, unloading or transfer operation so as to maintain the
dusty materials wet;
• all stockpiles of
aggregate or spoil should be covered and water applied;
• the height from which
excavated materials are dropped should be controlled to a minimum practical
height to limit fugitive dust generation from unloading; and
• the load of dusty materials carried by vehicle
leaving a construction site should be covered entirely by clean impervious sheeting
to ensure dust materials do not leak from the vehicle.
The air quality mitigation measures
recommended in the EIA Study are outlined in the Environmental Mitigation
Implementation Schedule (EMIS) (Annex B).
In the event of complaints, or
non-compliance / area of improvement is observed, the ET and the Contractor
should be responsible for reviewing the effectiveness of these mitigation
measures and for proposing to ER for approval, designing and implementing alternative
or additional mitigation measures as appropriate.
The requirements, methodology, equipment,
monitoring locations, criteria and protocols for the monitoring and audit of
noise impacts during construction of the Project are presented in this section.
Noise measurements should be carried out
in accordance with the guidelines given in Annex
– General Calibration and Measurement Procedures of Technical Memorandum on Noise from Construction Work other than Percussive
Piling (GW-TM).
Whilst the Noise Control Ordinance (NCO) does not provide for the statutory
control of construction activities occurring on weekdays during normal working
hours (ie Monday to Saturday inclusive 0700-1900
hours), a daytime standard of Leq(30min)
75dB(A) as stipulated in Annex 5 of the Technical
Memorandum on Environmental Impact Assessment Process (EIAO-TM) will be adopted as the noise criterion for all residential
dwellings; while a daytime standard of Leq(30min)
70dB(A) will be adopted for all educational institutions during normal school
days and Leq(30min) 65dB(A)
during examination periods.
The construction
noise levels will be measured in terms of A-weighted equivalent continuous
sound pressure level (Leq) measured in
decibels dB(A).
Leq(30min) should be used as the
monitoring parameter for the time period between 0700-1900 hours on normal
weekdays.
Supplementary
information for data auditing, two statistical sound levels L10 and
L90; the levels exceeded for 10 and 90 percent of the time
respectively, should also be recorded during the monitoring for reference. A sample data record sheet is shown in Annex
C for reference.
Noise measurements
should generally not be made in the presence of fog, rain, wind with a steady
speed exceeding 5ms-1 or wind with gusts exceeding 10ms-1. The wind speed should be checked with a
portable wind speed meter capable of measuring the wind speed in ms-1.
As referred to the GW-TM, sound level meters in compliance with the International Electrotechnical
Commission Publications 651:1979 (Type 1) and 804:1985 (Type 1) Specifications
should be used for carrying out the noise monitoring. Immediately prior to and following each
noise measurement the accuracy of the sound level meter should be checked using
an acoustic calibrator generating a known sound pressure level at a known
frequency. Measurements may be
accepted as valid only if the calibration levels from before and after the
noise measurement agree to within 1.0 dB.
The ET should ensure that the equipment is
maintained in a good working order in accordance with the manufacturer's
recommendations with sufficient spare equipment available in the event of
breakdown to maintain the planned monitoring programme.
The ET is responsible for the provision of
the monitoring equipment and will ensure that sufficient noise measuring
equipment and associated instrumentation are available for carrying out the
baseline monitoring and impact monitoring.
All the equipment and associated instrumentation will be clearly
labelled.
Representative locations were selected to monitor
the noise levels from the construction of the Project. The noise monitoring stations are listed
in Table 4.1 and presented in Figure
4.1.
Table 4.1 Noise
Monitoring Stations for
Construction Noise
Monitoring Station |
Description |
KMYLS1 |
|
JCCAH1 |
Jockey Club Care & Attention Home |
The status and locations of noise
sensitive receivers (NSRs) may change after issuing
this Manual and the location of the noise monitoring station may need to be
adjusted accordingly. If such
changes occur, the ET should propose an updated monitoring location for the
agreement from the ER, IEC and EPD.
When alternative monitoring location is proposed,
the following criteria, as far as practicable, should be followed:
·
At
locations close to the major site activities which are likely to have noise
impacts;
·
Close
to the NSRs; and
·
For
monitoring locations located in the vicinity of the NSRs,
care should be taken to minimise disturbance to the occupants during
monitoring.
The monitoring station will normally be at
a point 1 m from the exterior of the NSR building façade and at a height of
approximately 1.2 m above ground or at the height that has the least obstructed
view of the construction activities in relation to the NSR. If access to the normal monitoring
position cannot be obtained, an alternative position will be chosen, and a
correction to the measurements should be made, if appropriate. For instance, a correction of +3 dB(A) should be made to free-field measurements. The ET should agree with the ER, IEC,
EPD and the owners/occupants of the premises on the monitoring position. Once the positions for the monitoring
stations are chosen, the baseline monitoring and the impact monitoring should
be carried out at the same positions.
The ET should carry out baseline noise
monitoring prior to the commencement of any construction works. The baseline monitoring should be measured
for a continuous period of at least 14 consecutive days at a minimum logging
interval of 30 minutes for daytime and 15 minutes (as three consecutive Leq(5min)
readings) for evening, holidays and night-time.
Before commencing the baseline monitoring,
ET should inform the Contractor, IEC, ER and the EPD of the baseline monitoring
schedule programme such that relevant parties could conduct on-site audit to
ensure accuracy of the baseline monitoring results.
During the baseline monitoring, there
should not be any construction activities in the vicinity of the monitoring
stations. Any non-Project related
construction activities in the vicinity of the stations during the baseline
monitoring should be noted and the source(s) and location(s) be recorded.
In case the baseline monitoring could not
be carried out at any of the designated monitoring locations during the
baseline monitoring period, the ET should carry out the monitoring at
alternative location which could effectively represent the baseline conditions
at the impact monitoring locations.
The alternative baseline monitoring locations should be agreed with the
ER and IEC and approved by EPD.
In exceptional cases, when insufficient
baseline monitoring data or questionable results are obtained, the ET should
liaise with the ER, IEC and EPD to agree on an appropriate set of data to be
used as a baseline reference.
Noise monitoring should be carried out at
all the designated monitoring stations.
An initial guide on the monitoring is to obtain one set of 30-minute
measurement at each station between 0700 and 1900 hours on normal weekdays at a
frequency of once a week when construction activities are underway.
If construction works are extended to include
works during the hours between 1900 and 0700 hours, or on general holidays and
Sundays, applicable Construction Noise Permits (CNPs)
will be obtained by the Contractor under the NCO requirements, and the frequency and scope of monitoring will be
determined by EPD in the capacity of the Noise
Control Authority (NCA).
4.7
Environmental
Quality Performance Limits
Action and Limit (A/L) Levels provide an
appropriate framework for the interpretation of monitoring results. Interpretation of monitoring results is
undertaken through checking them against the Action and Limit (A/L) Levels
defined in Table 4.2.
Table 4.2 Action
and Limit Level for Construction Noise Monitoring
Time
Period |
Action
Level |
Limit
Level |
0700 – 1900
hours on normal weekdays |
When one
documented complaint is received from any one of the sensitive receivers |
75 dB(A)(Note) |
Note: (1)
Acceptable Noise Levels for Area Sensitivity Rating of
A/B/C. Limit Level is reduced to 70dB(A) for schools
and 65dB(A) during school examination periods. (2)
If works are to be carried out during restricted hours,
the conditions stipulated in the construction noise permit issued by the NCA
have to be followed. |
To account for cases where ambient noise
levels, as identified by baseline monitoring, approach or exceed the stipulated
Limit Level prior to commencement of construction, a Maximum Acceptable Impact
Level, which incorporates the baseline noise level and the identified
construction noise Limit Level, might be defined upon agreement with the
EPD. This amended level will,
therefore, be greater than 75 dB(A) and will represent
the maximum acceptable noise level at a specific monitoring station.
For compliance checking, after taking into
account any adjustments agreed with EPD, comparison with either the Limit or
the Maximum Acceptable Impact Level will represent the governing criteria for
noise impact assessment during impact monitoring.
The ET should compare the impact
monitoring results with the noise criteria as defined in Table 4.2. In cases
where exceedance of these criteria occurs, actions
should be carried out in accordance with the Action Plan shown in Table 4.3.
Table 4.3 Event
and Action Plan for Construction Noise
Event |
Action |
|||
|
ET |
IEC |
ER |
Contractor |
Action Level |
1.
Notify IEC and Contractor; 2.
Carry out investigation; 3.
Report the results of investigation to the IEC, ER and Contractor; 4.
Discuss with the Contractor and formulate remedial measures; 5.
Increase monitoring frequency to check mitigation effectiveness. |
1.
Review the analysed results submitted by the ET; 2.
Review the proposed remedial measures by the Contractor and advise the ER
accordingly; 3.
Supervise the implementation of remedial measures. |
1.
Confirm receipt of notification of failure in writing; 2.
Notify Contractor; 3.
Require Contractor to propose remedial measures for the analysed
noise problem; 4.
Ensure remedial measures are properly implemented. |
1.
Submit noise mitigation proposals to IEC; 2.
Implement noise mitigation proposals. |
Limit Level |
1. Identify source; 2. Inform IEC and ER: 3. Repeat measurements to confirm findings; 4.
Increase monitoring frequency; 5. Carry out analysis of Contractor's working
procedures to determine possible mitigation to be implemented; 6. Inform IEC,
ER and EPD the causes and actions taken for the exceedances; 7. Assess
effectiveness of Contractor's remedial actions and keep IEC, EPD and ER
informed of the results; 8. If exceedance stops, cease additional monitoring. |
1. Discuss amongst ER, ET, and Contractor on the
potential remedial actions; 2. Review Contractors
remedial actions whenever necessary to assure their effectiveness and advise
the ER accordingly; 3. Supervise the
implementation of remedial measures. |
1. Confirm receipt of notification of failure in
writing; 2. Notify
Contractor; 3. Require
Contractor to propose remedial measures for the analysed
noise problem; 4. Ensure
remedial measures properly implemented; 5. If exceedance continues, consider what portion of the work
is responsible and instruct the Contractor to stop that portion of work until
the exceedance is abated. |
1. Take immediate action to avoid further exceedance; 2. Submit
proposals for remedial actions to IEC within 3 working days of notification; 3. Implement the
agreed proposals; 4. Resubmit
proposals if problem still not under control; 5. Stop the
relevant portion of works as determined by the ER until the exceedance is abated. |
It is necessary to undertake regular
environmental audits and site inspections to ensure those recommended
mitigation measures were properly implemented. The requirements of the environmental
audit programme were set out in Section 8
of the Manual.
The audit programme will verify the
implementation status and evaluate the effectiveness and stability of the
mitigation measures.
4.10.1
Construction Phase
In order to reduce the noise impact of
construction site activities on nearby NSRs, the
following mitigation measures have been considered:
·
Good
Site Practice;
·
Use
of quiet PME;
·
Use
of acoustic enclosure;
·
Adoption
of movable noise barriers, and
·
Scheduling
of PME/construction activities.
Good Site Practices
Good site practices and noise management can
considerably reduce the impact of construction site activities on nearby Noise
Sensitive Receivers (NSRs). The noise benefits
of these practices can vary according to specific site conditions and
operations. The following site practices should be followed during the
construction of the Project:
·
Only
well-maintained plant should be operated on-site and plant should be serviced
regularly during the construction program;
·
Silencers
or mufflers on construction equipment should be utilized and should be properly
maintained during the construction program;
·
Mobile
plant, if any, should be sited as far from NSRs as
possible;
·
Machines
and plant (such as trucks) that may be in intermittent use should be shut down
between work periods or should be throttled down to a minimum;
·
Plant
known to emit noise strongly in one direction should, wherever possible, be
orientated so that the noise is directed away from the nearby NSRs;
·
Material
stockpiles and other structures should be effectively utilised, wherever
practicable, in screening noise from on-site construction activities; and
·
The
contractor should liaise with the school regarding the examination
periods. Noisy construction
activities, including piling, excavation and earth-breaking works, will be
carried out outside the examination periods.
Use of Quiet Powered Mechanical Equipment
(PME)
The use of quiet PME was considered to be
a practicable means to mitigate the construction noise impact. Quiet
plant is defined as a PME having actual SWL lower than the value specified in
the GW-TM.
Use of Acoustic Enclosure
Temporary acoustic
enclosure is a common and effective means to mitigate the noise impact arising
from operation of certain small size PMEs. A
frame covered with noise insulation materials (sound insulation materials with
a superficial surface density of at least 7 kg/m2 or sound absorbing
materials of at least 50mm and average absorption coefficient between 125 Hz
and 4000 Hz of 0.4) could at least 5 dB(A) reduction
for plant items such as hand-held breaker and circular wood saw. The locations of the temporary acoustic
enclosure should be adjusted wherever and whenever necessary to protect the
noise sensitive receivers, the enclosures should have no openings or gaps.
Adoption of Movable Noise Barriers
The use of noise
barriers will be an effective means to mitigate the noise impact arising from
the construction works, particularly for low-rise NSRs.
For the low-rise nature of the NSRs, movable noise barriers
of 3 to 5 m high (depending on the size of the plant that requires to be
screened) with skid footing should be used and located within a few metres of
stationary plant and mobile plant such that the line of sight to the NSR is
blocked by the barriers. The length of the barriers should be at least
five times greater than its height.
These movable noise barriers could produce at least 5 dB(A)
noise reduction for mobile plant such as backhoe and roller as well as large
scale plant such as crane. With reference to A Practical Guide for the
Reduction of Noise from Construction Works, the noise barrier material
should have a superficial surface density of at least 7 kg/m2
and have no openings or
gaps.
Scheduling of Construction Works
To
further alleviate the construction noise impacts, only one group of PME (Group
A or B) will be operated during road drainage, utilities and water mains works
at work site of slip road A and also during site works like road resurfacing
and remarking A and B. All noisy
construction activities should be suspended at work site of slip road A and
flyover A during examination period of the
4.10.2
Operational Phase
Notwithstanding the prediction that the NSRs will not be subject to adverse noise impact during the
operational phase of the Project, noise monitoring should be carried out during
the first year after opening to ensure noise compliance.
The ET should
prepare and deposit to EPD, at least 6 months before the operation of the works
under the Project, a monitoring plan for the purpose of assessing the accuracy
of traffic noise predictions by comparing the project noise impact predictions
with the actual impacts. The
monitoring plan should contain information on the monitoring locations,
monitoring schedules, methodology of noise monitoring including noise
measurement procedures, traffic counts and speed checks, and methodology of
comparison with the predicted levels. The ET should implement the monitoring
plan in accordance with the deposited monitoring plan unless with prior
justification. Monitoring details
and results including the comparison between the measured noise levels and the
predicted levels should be recorded in a report to be deposited with EPD within
one month of the completion of the monitoring. The report should be certified by the ET
Leader and the Project Proponent before deposit with EPD.
The traffic noise
levels should be measured twice at 6-month intervals within the first year upon
completion of the Project.
Measurements should be made in terms of the A-weighted L10
over 3 half hour periods during the peak traffic hour,
other parameters including Leq should also
be taken for reference.
As shown in Table 4.4 and Figure 4.1, two
designated monitoring stations are selected for the operational noise
monitoring. The status and
locations of noise sensitive receivers may change after this Manual is issued. If such cases exist, the ET Leader
should propose updated monitoring locations and seek approval from the ER and
IEC and agreement from EPD of the proposal.
Table 4.4 Noise
Monitoring Stations for Operational Traffic Noise
Monitoring Station |
Description |
KMYLS1 |
|
JCCAH1 |
Jockey Club Care & Attention Home |
The monitoring
locations should be selected according to the following criteria:-
·
they should be at NSRs in the
vicinity of recommended direct technical remedies; preferably, there should be
one representative monitoring locations near each types of noise screening
element (ie vertical barrier, cantilever barrier and
enclosure);
·
one high floor and one medium floor monitoring points
should be chosen at each location as far as practicable; and
·
selected monitoring
locations should allow monitoring to be done twice within one year after
implementation of the mitigation measures during operation of the Project.
The status and
location of NSRs may change after issuing this
manual. If such case exists, the ET Leader should propose updated monitoring
locations and seek approval from EPD and agreement from the ER and the IEC
before baseline monitoring commences.
When alternative
monitoring locations are proposed, the monitoring locations should be chosen
based on the following criteria:-
·
alternative location should be similarly exposed to
potential noise impacts;
·
it should be close to the NSRs;
and
·
should be located so as
to minimise disturbance to the occupants.
The operational
noise monitoring should be carried out at a distance of 1 m from the openable window and 1.2 m above the floor level of the
noise sensitive receivers identified.
The ET Leader should agree with the IEC on any necessary corrections
adopted.
·
one set of measurements during the morning traffic
peak hour on a normal weekday;
·
one set of measurements during the evening traffic
peak hour on a normal weekday;
·
a concurrent census of traffic flow and percentage
heavy vehicles should be conducted for the far-side and near-side of the road
and the existing road network in the vicinity of each measurement points;
·
average vehicle speed estimated for far-side and
near-side of the road and the existing road network in the vicinity of each
measuring points; and
·
the two sets of monitoring data should be obtained within
the first your of operation.
Measured noise
levels should be compared with the predicted noise levels by applying
appropriate conversion corrections to allow for the traffic conditions at the
time of measurement. A sample data
record sheet for traffic noise monitoring during operational phase is shown in Annex
C for reference.
The measured/
monitored noise levels should be compared with the predicted results and the
predicted traffic flow conditions (calculated noise levels based on concurrent
traffic census obtained). In case
discrepancies are observed, explanation should be given to justify the
discrepancies.
No adverse water quality impact is
anticipated during the construction phase with the implementation of good site
practices and appropriate mitigation measures in accordance with the Practice Note for Professional Persons
on Construction Site Drainage (ProPECC PN 1/94) and other relevant
guidelines. The recommended
mitigation measures include the provision of dedicated propriety treatment
system and associated site runoff collection system.
In order to ensure no adverse water
quality impact will arise from the construction of the Project, it is necessary
to undertake regular environmental audits and site inspections to ensure those
recommended mitigation measures were properly implemented. The requirements of the environmental
audit programme were set out in Section 8
of the Manual.
The audit programme will verify the
implementation status and evaluate the effectiveness and stability of the
mitigation measures.
The mitigation measures recommended in the
EIA Study are outlined in the Environmental Mitigation Implementation Schedule
(EMIS) (Annex B).
In the event of complaints, or
non-compliance / area of improvement is observed, the ET and the Contractor
should be responsible for reviewing the effectiveness of these mitigation
measures and for proposing to ER for approval, designing and implementing
alternative or additional mitigation measures as appropriate.
This section sets out the handling,
recycling, storage, transportation and disposal measures which are recommended
to avoid, and minimize potential adverse impacts associated with waste arising
from the construction of the Project.
6.2.1
Management of Waste Disposal
In accordance with the Waste Disposal (Charges for Disposal of
Construction Waste) Regulation, the Contractor should open a billing
account with the EPD. Every construction
waste or public fill load to be transferred to the Government waste disposal
facilities, namely public fill reception facilities, construction waste sorting
facilities, and landfills will require a valid “chit” which contains
information of the account holder (the Contractor) to facilitate waste
transaction recording and billing to the waste producer.
Inert C&D material generated from the
Project will be transferred to Tuen Mun Area 38 Fill Bank (TMFB), or other public fill
reception facilities, managed by Civil Engineering and Development Department
(CEDD), while the non-inert C&D material, after segregation, will be sent
to West New Territories Landfill (WENT), or other waste disposal facilities,
managed by the EPD.
A trip-ticket system will be maintained in
accordance with Environment, Transport
and Works Bureau Technical Circular No. 31/2004 and a recording system will
also established for recording the amount of waste and C&D material
generated, reused, recycled and disposed of (including the disposal sites) in a
form of similar to relevant appendices of Environment,
Transport and Works Bureau Technical Circular No. 19/2005. A sample of waste flow table (WFT) is
presented in Annex D to record the quantities
of waste and C&D material generated each month. The quantities and details of all the
recyclable and reused materials will also be recorded in the monthly summary
WFT. The quantities of waste and
C&D material generated, reused and recycled during the reporting month,
together with the disposal sites, will be presented in monthly EM&A report.
6.2.2
Approach to Reduce Waste Generation
Construction and Demolition (C&D)
Material
C&D material would be generated from
the following works of the Project:
·
Road
widening works;
·
Construction
of retaining wall and flyover;
·
Demolition
of existing parapets or footing for existing noise barriers;
·
Fill
slope / slope reprofiling involved in road
realignment; and
·
Extension
of subway in
The types of C&D material during the
construction works would be excavated soil, fill and concrete.
The waste concrete and shotcrete
will be segregated from other non-inert C&D material and be disposed of at
TMFB, or other public fill reception facilities.
The non-inert C&D material will be
further segregated into recyclable material, such as cardboard, carton box,
waste paper and scrap metal for the collection by recyclers and non-recyclable
material, such as waste timber and packaging material, which will be disposed
of at WENT, or other waste disposal facilities.
General Refuse
General refuse will be generated from
daily site office operation and workforce.
Recycling bins should be provided at strategic locations, such as the
entrance of site office to facilitate recovery of aluminium cans and waste
paper generated from the Site.
Materials collected in the recycling bins should be collected by or sold
to local recyclers.
6.2.3
Management of Chemical Waste
Chemical wastes likely to be generated from
the construction of the Project may include:
·
Residual
paints and solvents; and
·
Used
lubricant oil from maintenance of the construction plant.
It is anticipated that the quantity of
chemical waste to be generated will be small and in the order of a few hundred
litres for whole construction phase.
These chemical waste will be stored and disposed of in an appropriate
manner, as outlined in the Waste Disposal
(Chemical Waste) (General) Regulation and the Code of Practice on the Packaging, Labelling and Storage of Chemical
Wastes.
The Contractor should register as a
chemical waste producer with the EPD, and handle the chemical waste in
accordance with the Code of Practice on
the Package, Labelling and Storage of Chemical Wastes. A brief summary of the site arrangement
should be as follows:
Storage Containers
·
Be
suitable for the substance they are holding, resistant to corrosion, maintained
in a good condition, and securely closed;
·
Have a
capacity of less than 450L unless 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 Regulations.
Storage Area
·
Be
clearly labelled and used solely for the storage of chemical waste;
·
Be
enclosed on at least 3 sides;
·
Have
an impermeable floor and bunding, of a 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 entering (with water collected within the bund be
disposed of as chemical waste when necessary); and
·
Be
arranged so that incompatible materials are appropriately separated.
Disposal
·
Be collected
by licensed chemical waste collector; and
·
Be
disposed / transferred to a facility licensed to receive chemical waste, such
as Chemical Waste Treatment Facility (CWTF) at Tsing
Yi or other chemical waste recyclers.
At the commencement of the construction
works, training should be provided to workers on the concepts of site
cleanliness and on appropriate waste management procedures, including waste
reduction, reuse and recycling.
Location map and label showing different
waste facilities on site will be provided at conspicuous locations to
facilitate waste storage, segregation and recycling.
Tool box talk regarding waste management
practices on site should be arranged on regular basis to maintain and / or
improve site practices.
In order to review the good site practices
of waste management, regular audit and site inspection should be carried out by
the ET to check whether the Contractor has implemented the recommended good
site practices and other mitigation measures. The inspection should look at all
aspects of on-site waste management practices including waste generation,
storage, recycling, transport and disposal. Apart from site inspection, documents
including licences, permits, disposal and recycling records should be reviewed
and audited for compliance with the legislation and Contract requirements. Designated staff of the Contractor
responsible for resources allocation, staff training and controlling the
relevant documents will also be interviewed to review the effectiveness of site
management.
The requirements of the environmental
audit programme were set out in Section 8
of the Manual. The audit programme
will verify the implementation status and evaluate the effectiveness and
stability of the mitigation measures.
Good Site Practice
Under the condition of good site practices
are strictly followed, it is anticipated that no adverse waste management
related impacts would arise. Recommendations
for good site practices during the construction activities include:
·
nomination
of an approved personnel, such as a site manager, to be responsible for the
implementation of good site practices, arrangements for collection and
effective disposal to an appropriate facility, of all wastes generated at the
site;
·
training
of site personnel in site cleanliness, appropriate waste management procedures,
including chemical waste handling procedures, and concepts of waste reduction,
reuse and recycling;
·
provision
of sufficient waste disposal points and regular collection for disposal;
·
appropriate
measures to minimise windblown litter and dust during transportation of waste
by either covering trucks or by transporting wastes in enclosed containers;
·
separation
of chemical wastes for special handling and appropriate treatment at the CWTF;
·
regular
cleaning and maintenance programme for drainage systems, sumps and oil
interceptors;
·
implementation
with a recording system for the amount of wastes generated, recycled and
disposed (including the disposal sites; should be proposed; and
·
a waste management plan (WMP) should be prepared in accordance with ETWB
TC No. 19/2005 and submitted to the ER for approval.
Waste Reduction Measures
Good management and control can prevent
generation of significant amount of waste.
Waste reduction is best achieved at the planning and design stage, as
well as by ensuring the implementation of good site practices. Recommendations to achieve waste reduction
include:
·
Segregation
and storage of different types of waste in different containers, skips or
stockpiles to enhance reuse or recycling of material and their proper disposal;
·
Encourage
collection of aluminium cans and waste paper by individual collectors during
construction with separate labelled bins being provided to allow the
segregation of these wastes from other general refuse generated by the
workforce;
·
Any
unused chemicals and those with remaining functional capacity be recycled as
far as possible;
·
Use
of reusable non-timber formwork to reduce the amount of C&D materials;
·
Prior
to disposal of construction waste, wood, steel and other metals should be
separated, to the extent practical for re-use and/or recycling to reduce the
quantity of waste to be disposed at landfills;
·
Proper
storage and site practices to reduce the potential for damage or contamination
of construction materials; and
·
Plan
and stock construction materials carefully to reduce amount of waste generated
and avoid unnecessary generation of waste.
Waste management approach recommended in
the EIA Study is outlined in the Environmental Mitigation Implementation
Schedule (EMIS) (Annex B).
In the event of complaints, or non-compliance
/ area of improvement is observed, the ET and the Contractor should be
responsible for reviewing the effectiveness of these mitigation measures and
for proposing to ER for approval, designing and implementing alternative or
additional mitigation measures as appropriate.
The EIA Report has recommended landscape
and visual mitigation measures to be undertaken during construction and
operation phases of the Project.
This Section defines the EM&A requirements to ensure the proposed
landscape and visual impact mitigation measures are effectively implemented.
The ET should carry out baseline landscape
and visual monitoring prior to the commencement of any construction works. The baseline monitoring should be
conducted as a one-off site survey.
Before commencing the baseline monitoring,
ET should inform the Contractor, IEC, ER and the EPD of the baseline monitoring
schedule programme such that relevant parties could conduct on-site audit to
ensure accuracy of the baseline monitoring results.
Any baseline changes with respect to the
landscape and visual impact should be recorded in reference to the baseline
conditions of the site as described in Section 8 of the EIA Report. The baseline monitoring should in
particular record changes of each landscape resource, landscape character area
and the view conditions of each visual sensitive receiver. Parameters used to describe changes in
each of the above should be the same as in Section 8 of the EIA Report.
The purposes of the baseline monitoring
are:
·
to
check the status of the landscape resources within, and immediately adjacent
to, the construction sites and works areas;
·
to determine
whether any change has occurred to the status of the landscape resources since
the EIA Study carried out;
·
to
determine whether amendments in the design of the landscape and visual
mitigation measures are required for those changes; and
·
to recommend any necessary amendments to the design of the landscape and
visual mitigation measures.
A competent Landscape Architect should be
employed to conduct the baseline landscape and visual environmental monitoring.
In order to ensure landscape and visual
impact is controlled and mitigated during both construction and operational
phases of the Project, the ET should undertake regular site inspections to
ensure those recommended mitigation measures were properly implemented. Section
8 of this Manual sets out inspection requirements, and the inspection
programme will verify the implementation status and evaluate the effectiveness
and stability of the mitigation measures.
A competent Landscape Architect should be
employed to conduct the regular landscape audit during both construction and
operational stage.
For the operational phase, all landscape
and visual mitigation measures should be monitored monthly during the first
year of the operational phase to ensure that the effectiveness of the mitigations.
In cases where non-compliance of landscape
and visual impacts occurs, actions should be carried out in accordance with the
Action Plan shown in Table 7.1.
Table 7.1 Event
and Action Plan for Landscape and Visual Impact
Event |
Action |
|||
|
ET |
IEC |
ER |
Contractor |
1.
Identify source; 2.
Inform the IEC and the ER; 3.
Discuss remedial actions with the IEC, the ER and the Contractor; 4.
Monitor remedial action until rectification has been completed. |
1.
Check report; 2.
Check the Contractor’s working method; 3.
Discuss with the ER and the Contractor on possible remedial measures; 4.
Advise the ER on effectiveness of proposed remedial measures. |
1.
Notify the Contractor; 2.
Ensure remedial measures are properly implemented. |
1.
Amend working methods; 2.
Rectify damage and undertake remedial measures or any necessary replacement. |
|
Repeated Non-compliance |
1. Identify source; 2. Inform the
IEC and the ER; 3. Increase
monitoring (site audit) frequency; 4. Discuss
remedial actions with the IEC, the ER and the Contractor; 5. Monitor remedial
actions until rectification has been completed; 6. If exceedance stops, cease additional monitoring (site
audit). |
1. Check report; 2. Check the
Contractor’s working method; 3. Discuss with
the ER and the Contractor on possible remedial measures; 4. Advise the ER
on effectiveness of proposed remedial measures; 5. Supervise
implementation of remedial measures. |
1. Notify the Contractor; 2. Ensure
remedial measures are properly implemented; 3. Inform EPD when necessary. |
1. Amend working methods; 2. Rectify
damage and undertake remedial measures or any necessary replacement. |
The landscape and visual mitigation
measures should be incorporated to ensure the mitigation effect and achieve the
intended aims as described in Tables 7.2
and 7.3 below, together with an indication of Funding, Implementation and
Maintenance Agencies.
Approval-in-principle to the implementation, management and maintenance
of the proposed mitigation measures is sought from the appropriate authorities
are indicated in Tables 7.2 and 7.3 below;
according to the principles in Works
Bureau Technical Circular WBTC
14/2002. Any changes to the
mitigation measures that may be recommended as a result of the baseline
monitoring or ongoing monitoring of the design, construction and establishment
works should be taken into account.
Table 7.2 Proposed
Landscape and Visual Mitigation Measures during Construction Phase
Items |
Landscape and Visual Mitigation Measures |
Funding Agency |
Implementation Agency |
1 |
LMM 5 – Early
Planting Works. Where technically feasible, new plantings are to be installed
as early as possible during the construction works. |
HyD |
Contractor |
2 |
LMM 6 – Site
hoardings to be compatible with the surrounding environment. Where possible
site hoardings to be coloured to complement the surrounding areas. Colours
such as green and light brown are recommended. |
HyD |
Contractor |
Table 7.3 Proposed
Landscape and Visual Mitigation Measures during Operational Phase
Items |
Landscape and Visual Mitigation Measures |
Funding Agency |
Implementation Agency |
Maintenance/ Management Agency |
1 |
Cultivation of areas
compacted during construction.
Areas compacted during the construction phase that are not required
during the operation phase, are to be cultivated to a depth of up to 300mm in
accordance with the future Landscape Specification. |
HyD |
Contractor/HyD |
LCSD/HyD |
2 |
Soil
stabilisation and planting. During the design phase, a soil stabilisation and
embankment planting strategy will be developed to ensure that land affected
by slope excavation can be replanted.
Soil preparation and the selection and provision of suitable growing
medium is to be completed in accordance with the
relevant best practice guidelines. |
HyD |
Contractor/HyD |
LCSD/HyD |
3 |
Tree and Shrub
Planting. All planting of trees and
shrubs is to be carried out in accordance with the relevant best practice
guidelines. Plant densities are
to be provided in future detailed design documents and are to be selected so
as to achieve a finished landscape that matches the surrounding, undisturbed,
equivalent landscape types. |
HyD |
Contractor/HyD |
LCSD/HyD |
4 |
LMM 4 -
Relocation. Landscape Resources of value to be re-located where practically
feasible. |
HyD |
Contractor/HyD |
LCSD |
5 |
Design of Structures.
Where possible, built structures will utilise appropriate designs to
complement the surrounding landscape.
Materials and finishes will also be considered during detailed design. |
HyD |
Contractor/HyD |
HyD |
6 |
Design of noise
barriers. The 2.5m high vertical noise barrier for the planned schools will
be in the form of concrete structure installed with barrier panels to align
with the existing provision in the vicinity and to integrate into the
landscape. |
HyD |
Contractor/HyD |
HyD |
7 |
Plantings in
addition to the landscape mitigation plantings proposed, appropriate new
plantings will be installed as appropriate to help integrate the new
structures into the surrounding landscape. |
HyD |
Contractor/HyD |
LCSD/HyD |
Note: (1)
LCSD means Leisure and Cultural Services Department; (2)
HyD should be responsible for the maintenance and
management for hard streetscape works and LCSD should be responsible for the
maintenance and management of soft landscape works. |
The design, implementation and maintenance
of landscape and visual mitigation measures should be checked monthly to ensure
that they are fully implemented.
Any potential conflicts between the proposed landscape measures and any
other project works or operational requirements should also be recorded for the
Contractor to resolve in early stage, without compromising the intention of the
mitigation measures.
The landscape and visual mitigation
measures recommended in the EIA Study are outlined in the Environmental
Mitigation Implementation Schedule (EMIS) (Annex B).
Site inspections provide a direct means to
track and ensure the enforcement of specified environmental protection and
pollution control measures. The
inspections should be undertaken by the ET to ensure that appropriate
environmental protection and pollution control mitigation measures are properly
implemented. Additionally, the ET
should be responsible for defining the scope of the inspections, detailing any
deficiencies that are identified, and reporting any necessary action or
mitigation measures that are implemented as a result of the inspection.
Site inspections should be carried out at
least once per week. The areas of
inspection should not limited to the general environmental conditions in the
vicinity of the site and the pollution control and mitigation measures within
the site; the environmental conditions outside the site area which are likely
to be affected, directly or indirectly, by site activities. The ET Leader should make reference to
the following information in conducting the inspections:
·
the
EIA Study and EM&A recommendations on environmental protection and
pollution control mitigation measures;
·
ongoing
results of the EM&A programme;
·
works
progress and programme;
·
individual
works method statements which should include proposals on associated pollution
control measures;
·
contract
specifications on environmental protection;
·
relevant
environmental legislation and guidelines; and
·
previous site inspection results undertaken.
The inspection results and their
associated recommendations on improvements to the environmental protection and pollution
control works should be submitted to the IEC and the Contractor, as
appropriate, within one working day, for reference and for taking immediate
action. They should also be
presented, along with the remedial actions taken, in the monthly EM&A report. The Contractor should follow the
procedures and time-frames stipulated in the environmental site inspection for
the implementation of mitigation proposal.
An action reporting system should be formulated and implemented to
report on any remedial measures implemented subsequent to the site inspections.
The ET should also carry out ad hoc site inspections if significant
environmental problems are identified.
Inspections may also be required subsequent to receipt of an
environmental complaint, or as part of the associated investigation work, as
specified in the Action Plan for environmental monitoring and audit.
8.2
Compliance with
Legal and Contractual Requirements
There are contractual environmental
protection and pollution control requirements, which the Contractor should
comply with, in addition to
In order that the works are in compliance
with the contractual requirements, all works method statements submitted by the
Contractor to the ER for approval should sent to the ET Leader for vetting to
see whether sufficient environmental protection and pollution control measures
have been included.
The ET should review all the progress and programme
of the works to check that relevant environmental laws have not been violated,
and that any foreseeable potential for violating the laws can be prevented.
The Contractor should also make available
for inspection relevant documents to the ET so that the checking and auditing
process can be carried out. The relevant documents are expected to include the
updated work progress reports, the updated works programme, the application
letters for different licences/permits under the environmental protection laws,
all valid licences/permits and environmental related records. The site diary should also be available,
upon request, to the ET during his site inspection.
After reviewing the documentation, the ET
Leader should advise the IEC 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 is incompatible with the
works programme or may result in a potential violation of environmental
protection and pollution control requirements by the works in due course, he
should also advise the Contractor and the ER accordingly.
Upon receipt of the advice, the Contractor
should undertake immediate action to remedy the situation. The ER should follow up to ensure that
appropriate action has been taken by the Contractor in order to satisfy contractual
and legal requirements.
This section sets out the handling
protocol in dealing with environmental related complaints and enquiries. The handling protocols aimed at:
·
Ensuring
that environmental complaints and enquiries are received, recorded and
communicated to the ER and HyD.
·
Ensuring
that the ER and HyD are kept fully informed of action
taken to address the calls received.
·
Enabling
mobilization of resources quickly to mitigate the potential impacts.
The Contractor should establish a
community liaison office with a 24-hour hotline for receiving enquiry and
complaint from the public on the construction activities related to the
Project.
In addition, the Contractor should also
establish guidance in handling enquiry or complaints via phone calls,
correspondence, classification of complaint and enquiry, assignment of
responsible staff, investigation procedures, follow-up action to be taken and
compilation of complaint record for inspection. In general, complaints made via phone
calls should be responded immediately by the designated holder or relevant
staff.
All environmental related complaints via
phone call or correspondence should be forwarded to the ET Leader to carry out
an independent complaint investigation with the following procedures:
·
log
complaint and date of receipt onto the complaint database and inform the IEC
and the ER immediately;
·
investigate
the complaint to determine its validity, and assess whether the source of the
problem is due to works activities;
·
identify
mitigation measures in consultation with the IEC if a complaint is valid and
due to works;
·
advise
the Contractor and the ER if mitigation measures are required;
·
review
the Contractor's response to identified mitigation measures, and the updated
situation;
·
submit
interim report to the EPD on status of the complaint investigation and
follow-up action;
·
upon the
identification of follow-up action, the Contractor should implement it as soon
as possible;
·
review
the implementation status and its effectiveness, and when necessary, undertake
additional monitoring and audit to verify the situation, and review that
circumstances leading to the complaint do not recur;
·
record
the complaint, investigation, the subsequent actions and results into the
Complaint Investigation Form as shown in Annex E and submit to the IEC,
Contractor, ER, EPD and the complainant directly (if required);
·
close
the complaint and update the complain log as shown in Annex E, if the
environmental condition is acceptable; and
·
record the complaint, investigation, the subsequent actions
and the results in the monthly EM&A reports.
During the complaint investigation stage,
the Contractor and the ER should cooperate with the ET in providing all
necessary information and assistance for completion of the investigation. If mitigation measures are required
following the investigation, the Contractor should promptly carryout the
measures. The ET should ensure that
the measures have been carried out by the Contractor.
Reports can be provided in an electronic
medium upon agreeing the format with the ER and the EPD. This will enable a transition from a
paper / historic and reactive approach to an electronic/real time proactive
approach.
Types of reports that the ET Leader should
prepare and submit include Baseline Noise Monitoring Report, Monthly EM&A
Report, Quarterly EM&A Summary Report and Final
Review EM&A Report. In
accordance with Annex 21 of the EIAO-TM,
a copy of the monthly, quarterly summary and final review EM&A reports
should be made available to the Director of Environmental Protection.
10.2
Interim
Notification of Environmental Quality Limit Exceedances
With reference to the Event and Action
Plan, when the environmental quality performance limits are exceeded, the ET
Leader should immediately notify the IEC and ER, as appropriate. The notification should be followed up
with advice to the IEC and EPD on the results of the investigation, proposed
actions and success of the actions taken, with any necessary follow-up
proposals. A sample template for
the interim notifications of environmental quality limits exceedances
is presented in Annex F.
10.3
Electronic
Reporting of EM&A Information
In order to facilitate public inspection of
Baseline Noise Monitoring Report and Monthly EM&A Reports via electronic
media, electronic copies of these Reports should be prepared in Hyper Text Markup Language (HTML) and in Portable Document Format and
should be submitted at the same time as the hard copies. For the HTML version, a content page
capable of providing hyperlink to each section and sub-section of these Reports
should be included at the beginning of the document. Hyperlinks to all figures, drawings and
tables in these Reports should be provided in the main text from where the
respective references are made. All
graphics in these Reports should be in interlaced GIF format unless otherwise
agreed by EPD. The content of the
electronic copies of these reports must be the same as the hard copies. The Baseline Monitoring Report and
Monthly EM&A Reports should be made available to the public via a dedicated
Internet Website in the shortest possible time and in any event no later than
two weeks after the relevant environmental monitoring data are collected or
become available, unless otherwise agreed with EPD.
For environmental monitoring data and
results, they should be made available to the public through a dedicated web
site within two working days for construction noise data and two weeks for
other data/results after the relevant environmental monitoring data are
collected or become available.
The Internet website should enable
user-friendly public access to the environmental monitoring data and project
information. The Internet website should
have features capable of:
·
providing
access to all environmental monitoring data of the Project collected since the
commencement of construction;
·
providing
access to all finalized submissions as required under this Manual;
·
searching
by date;
·
searching
by types of noise monitoring data; and
·
Hyperlinks
to relevant monitoring data after searching;
10.4
Baseline
Monitoring Report
The ET Leader should prepare and submit a
Baseline Monitoring Report within 10 working days of completion of the baseline
monitoring and at least one week before commencement of construction of the
Project. Copies of the Baseline
Monitoring Report should be submitted to the Contractor, IEC, ER and EPD. The ET Leader should liaise with the
relevant parties on the exact number of copies they require. The report format and baseline
monitoring data format should be agreed with the EPD prior to submission.
The baseline monitoring report will
include at least the following:
·
up to
half a page executive summary;
·
brief
project background information;
·
drawings
showing locations of the baseline monitoring stations;
·
an
updated construction programme;
·
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; and
§
quality
assurance (QA) / quality control (QC) results and detection limits;
·
details
on influencing factors, including:
§
major
activities, if any, being carried out on the site during the period;
§
weather
conditions during the period; and
§
other
factors which might affect results;
·
determination
of the Action and Limit Levels (A/L levels) for each monitoring parameter and
statistical analysis of the baseline data;
·
revisions
for inclusion in the EM&A Manual; and
·
comments, recommendations and conclusions.
The results and findings of all EM&A
work required in the Manual should be recorded in the Monthly EM&A Reports
prepared by the ET Leader. The
Monthly EM&A Reports should be prepared and certified by the ET Leader; and
verified and certified by the IEC and submitted within 10 working days after
the end of each reporting month, with the first report due in the month after
construction commences. Each
monthly EM&A report should be submitted to the Contractor, IEC, ER and
EPD. The ET Leader should liaise with
each party on the required number of copies of the Monthly EM&A Reports in
both hard copy and electronic medium requirement.
The ET Leader should review the number and
location of monitoring stations and parameters every six months or on as needed
basis, in order to cater for any changes in the surrounding environment and the
nature of works in progress.
10.5.1
First Monthly EM&A Report
The first monthly EM&A report should
include at least the following:
·
executive
summary (1-2 pages):
§
breaches
of Action and Limit levels;
§
complaint
log;
§
notifications
of any summons and successful prosecutions;
§
reporting
changes; and
§
future key issues.
·
basic
project information:
§
project
organization including key personnel contact names and telephone numbers;
§
construction
programme;
§
management
structure, and
§
works
undertaken during the month;
·
environmental
status:
§
works
undertaken during the month with illustrations (such as location of works etc);
and
§
drawings
showing the project area, any environmental sensitive receivers and the
locations of the monitoring stations;
·
a
brief summary of EM&A requirements including:
§
all
monitoring parameters;
§
environmental
quality performance limits (Action and Limit levels);
§
Event
and Action Plans;
§
environmental
mitigation measures, as recommended in the EIA Study Final Report; and
§
environmental
requirements in contract documents;
·
implementation
status:
§
advice
on the implementation status of environmental protection and pollution control
/ mitigation measures, as recommended in the EIA Study, summarized in the
updated implementation schedule;
·
monitoring
results (in tabulated form 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;
§
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; and
§
any
other factors which might affect the monitoring results; and
§
quality
assurance (QA) / quality control (QC) results and detection limits;
·
report
on non-compliance, complaints, notifications of summons and successful
prosecutions:
§
record
of all non-compliance (exceedances) of the
environmental quality performance limits (Action and Limit levels);
§
record
of all complaints received (written or verbal) for each media, including
locations and nature of 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 breaches of
current environmental protection / pollution control legislations, 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;
and
§
description
of the actions taken in the event of non-compliance and deficiency reporting and
any follow-up procedures related to earlier non-compliance;
·
others
§
an
account of the future key issues as reviewed from the works programme and work
method statements;
§
advice
on the solid and liquid waste management status during the period; and
§
comments (for examples, effectiveness and efficiency of the
mitigation measures), recommendations (for example, any improvement in the
EM&A programme) and conclusions.
10.5.2
Subsequent Monthly EM&A Reports
The subsequent monthly EM&A reports
should include at least the following:
·
executive
summary (1 - 2 pages):
§
breaches
of Action and Limit Levels;
§
complaints
log;
§
notifications
of any summons and successful prosecutions;
§
reporting
changes; and
§
future key issues.
·
environmental
status:
§
construction
programme;
§
works
undertaken during the month with illustrations including key personnel contact
names and telephone numbers; and
§
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, as recommended in the EIA Study, summarized in the
updated implementation schedule;
·
monitoring
results (in tabulated form 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;
§
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; and
§
quality assurance (QA) / quality control (QC) results and
detection limits.
·
report
on non-compliance, complaints, and notifications of summons and successful
prosecutions:
§
record
of all non-compliance (exceedances) of the
environmental quality performance limits (Action and Limit levels);
§
record
of all complaints received (written or verbal) for each media, including
locations and nature of 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 breaches of
current environmental protection / pollution control legislations, 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;
and
§
description of the actions taken in the event of non-compliance
and deficiency reporting and any follow-up procedures related to earlier
non-compliance.
·
others
§
an
account of the future key issues as reviewed from the works programme and work
method statements;
§
advice
on the solid and liquid waste management status during the period; and
§
comments (for examples, effectiveness and efficiency of the
mitigation measures), recommendations (for example, any improvement in the
EM&A programme) and conclusions.
·
appendix
§
Action
and Limit levels;
§
graphical
plots of trends of monitored parameters at key stations over the past four
reporting periods for representative monitoring stations
·
monitoring
schedule for the present and next reporting period;
·
cumulative
statistics on complaints, notifications of summons and successful prosecutions;
and
·
outstanding issues and deficiencies.
10.5.3
Quarterly EM&A Summary Reports
A
quarterly EM&A summary report of around five pages should be produced and
should contain at least the following information:
·
up to
half page executive summary;
·
basic
project information including a synopsis of the project organisation,
programme, contacts of key management, and a synopsis of works undertaken
during the quarter;
·
a
brief summary of EM&A requirements including:
§
monitoring
parameters;
§
environmental
quality performance limits (Action and Limit levels); and
§
environmental
mitigation measures, as recommended in the EIA Report;
·
advice
on the implementation status of environmental protection and pollution control
/ mitigation measures, as recommended in the EIA Report, summarised in the
updated implementation schedule;
·
drawings
showing the project area, any environmental sensitive receivers and the
locations of the monitoring and control stations;
·
graphical
plots of any trends in 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; and
§
any
other factors which might affect the monitoring results;
·
advice
on the solid and liquid waste management status during the reporting period;
·
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 any non-compliance, including
a review of pollution sources and working procedures;
·
a
summary description of actions taken in the event of non-compliance and any
follow-up procedures related to any earlier non-compliance;
·
a
summarised record of all complaints received (written or verbal) for each
media, liaison and consultation undertaken, actions and follow-up procedures
taken;
·
comments
(for examples, a review of the effectiveness and efficiency of the mitigation
measures) recommendations (for example, any improvement in the EM&A
programme) and conclusions for the quarter; and
·
proponents' contacts and any hotline telephone number for the
public to make enquiries.
10.5.4
Final EM&A Summary Report
The Final EM&A
Review Report will include at least the following:
·
an
executive summary;
·
drawings showing the project area, any
environmental sensitive receivers and the locations of the monitoring and
control stations;
·
basic
project information including a synopsis of the project organisation, contacts
of key management, and a synopsis of work undertaken during the entire
construction period;
·
brief
summary of EM&A requirements including:
§
monitoring
parameters;
§
environmental
quality performance limits (Action and Limit levels); and
§
environmental
mitigation measures, as recommended in the EIA Report;
§
Event
and Action Plans.
·
advice
on the implementation status of environmental protection and pollution
control/mitigation measures, as recommended in the Project Profile, summarized
in the updated implementation schedule;
·
graphical
plots of the trends of monitored parameters over the construction period for
representative monitoring stations annotated against:
§
the
major activities being carried out on-site during the period;
§
weather
conditions during the period; and
§
any
other factors which might affect the monitoring results;
·
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 notifications of summons and successful prosecutions for
breaches of the current environmental protection/pollution control
legislations, locations and nature of breaches, investigation, follow-up
actions taken and results;
·
a
review of the validity of EIA predictions and identification of shortcomings in
the EIA recommendations;
·
advice
on the environmental acceptability of the Project with reference to the
specific impact hypothesis;
·
advice
on the solid and liquid waste management status;
·
review
monitoring methodology adopted and with the benefit of hindsight, comment on
its effectiveness (including cost effectiveness);
·
review
the practicality and effectiveness of the EM&A programme (for examples, a
review of the effectiveness and efficiency of the mitigation measures),
recommend any improvement in the EM&A programme; and
·
recommendations and recommendations (for example, a review of
success of the overall EM&A programme to cost-effectively identify
deterioration and to initiate prompt effective mitigatory
action when necessary).
Documentation 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. However, such documents should be well
kept by the ET Leader, as appropriate, and should be available for inspection
upon request. All relevant
information should be clearly and systematically recorded in the documents. Monitoring data should also be recorded
in electronic format, and the soft copy should be available upon request. All documents and data should be kept
for at least one year following completion of the construction contract.