Content
1.3 Location
and scope of Project
1.4 The Type of Designated Project Covered in the Study
1.5 Possible Impact on the Environment
1.6 Objectives of EM&A programme
1.7 The Scope of the EM&A Programme
2.8 Event
and Action Plan (EAP)
3.4 Construction
phase Monitoring
3.8 Operation
Phase Monitoring
4.2 Ecological Mitigation Measures and Implementations
4.3 Monitoring and Audit for Ecology
5.2 Waste Control and Mitigation Measures
6.2 Cultural Heritage Requirements for EM&A
7.2 Potential Areas Recommended for Further
Investigation
7.3 Preparation of Contamination
Assessment Plan
7.5 Mitigation Measures for Land
Contamination during Construction Stage
7.6 Potential for Future Land
Contamination
8. Landscape and visual
impact mititation measures
8.3 Construction and Operation Phase Audit
8.5 Tree Preservation, planting and buffer areas
8.6 Shrub
and ground cover planting
8.7 Engineering infrastructure: bridges, desalination plant,
pumping stations and water tanks
8.8 Buildings: Extension of existing, halfway houses and
rain shelters
9.2 Compliance with Legal and Contractual Requirements
10.2 Baseline
Monitoring Report
10.4 Quarterly EM&A Summary Report
List of Figures
1.1 Location of the Proposed
project
1.2 Master
Layout Plan of the proposed third golf course
1.3 Project
Organisation and Lines of Communication
2.1 Proposed
Air Quality Monitoring locations
3.1 Proposed
Water Quality Monitoring Locations (Construction phase)
3.2 Proposed
Water Quality Monitoring Locations (Operational phase)
4.1 Proposed
Ecology Monitoring Locations
4.2 Proposed
coral transplantation locations
4.3 Location
of coral and seagrass monitioring (Sites D2, D3 and C)
4.4 Control Site for Natural Coral Monitoring
6.1 Area
of Construction Works requiring a Watching Brief
7.1 Proposed
Sampling Locations for Land Contamination
List of Appendix
Appendix A Implementation
Schedule
Appendix B Sample Data
Sheet, Complaint Log and Interim Notification Exceedances
1.1.1
The
purpose of this Environmental Monitoring and Audit (EM&A) Manual is to
guide the set up of an EM&A programme to ensure
compliance with the 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 Manual
outlines the monitoring and audit programme for the
construction and operation phases of the “Proposed Extension of Public Golf
Course at Kau Sai Chau, Sai Kung” (hereafter
referred as “the Project”). It aims
to provide systematic procedures for monitoring, auditing and minimising environmental impacts associated with
construction works and operation activities.
1.1.2
The
environmental laws, ordinances, regulations of
1.2.1
In mid-1990,
the Hong Kong Jockey Club (HKJC) proposed providing a public golf course at Kau Sai Chau
as a recreational golf facility, which also has the effect of restoring the
land degraded by its use as an artillery range. In late 1995, the first 18-hole
golf course was opened to the public, followed by a second 18-hole golf course,
driving range and associated support facilities nine months later. Since
opening, utilisation of the golf courses has
increased considerably. Utilisation of tee-times is almost 100% on weekends/public
holidays and 72% on weekdays when there is good weather (annual average utilisation is 80%). With the two existing courses in heavy
demand, the Hong Kong Jockey Club has decided to expand the existing facilities
by building a third golf course with supporting facilities.
1.2.2
The
Project Proponent has therefore decided to make a proposal to enlarge the
existing facility into an area that, like the original facility, is a site
degraded by former use as an artillery firing range. The Project will provide
additional golfing capacity for the existing public golf course on Kau Sai Chau.
1.2.3
Historically,
Kau Sai Chau
was used as a military firing range, and on the Project site there is still
visible evidence of this former activity where the thin scrubland cover has
been exposed and there has been extensive washout. The existing (36-hole) golf
course was the subject of an EIA, although this was before the enactment of the
EIA Ordinance (EIAO) (Cap 499) and the project was classed as being “exempted”
under the EIAO, i.e. works carried out before the EIAO. This EIA identified
environmental mitigation for incorporation into the design and operation phases
of the project, including EM&A requirements for construction and operation
phases and a “Turf Grass Management Plan”. There has been ongoing EM&A
since the course was opened to the public.
1.3.1
The
location of the Project is Kau Sai
Chau, Port Shelter,
1.3.2
The
Project comprises the following (Figure 1.2):
· Construction of a third 18-hole public golf course on the east side of the island, south of the existing golfing area;
· A new irrigation lake to collect surface runoff from new 18-hole golf course. Water stored at the new irrigation lake can also be diverted to existing reservoir for tertiary treatment and recycling;
· A new desalination plant adjacent to the existing pier serve as an additional irrigation water supply for the new golf course during dry season; and
· Expansion of existing administration and maintenance buildings.
1.4.1
The
Project is a Designated Project according to Item O1 of Part I, Schedule
2 of the Environmental Impact Assessment Ordinance (EIAO), since it is an outdoor
golf course. The extension of
the existing 36-hole golf course on the east side of Kau
Sai Chau can be considered
as self-contained for construction activities, but cumulative impact of the
three courses for turfgrass management and increased
patronage must be considered for the operation phase.
1.5.1
Based
on experience gained during the construction and operation of the original
course, the current proposal includes design measures to avoid or minimize
environmental impacts. Therefore, the golf course design will propose
adopting/modifying/enhancing the same approach used in the existing courses in
several fundamental areas:
· utilization of treated sewage effluent as a water resource for irrigation. This theme would be continued for the proposed third golf course;
· the closed low flow drainage system is designed to collect all of the surface runoff from the proposed proposed third golf course. This water will be diverted back to the existing irrigation reservoir for recycling as irrigation for the proposed third golf course;
· no potable water would be used for irrigation purposes. A desalination plant will be used as a irrigation alternatives during dry season;
· thorough mitigation measures will be proposed in the EIA and EM&A Manual, and will be sufficient to control any silty water runoff during earthworks of the proposed third golf course.
· “turfgrass sods”, rather than growing from seeds, will be used during course establishment to reduce the period when open earth is exposed;
· implementation of the turf grass management plan ensures an integrated approach to turf problems and minimal use of pesticides, thereby protecting water quality during the operation phase of the golf course;
· recycled waste will be used as organic fertilizers used on the golf courses;
·
a buffer zone of
· movement of material will be contained in catchments. Wetland landscaping features (lakes/marshes) and the reservoir will be used as construction and operation run-off water retention and sediment settlement areas; and
· players will use electric golf carts to move around the course (the provision of golf cart tracks rather than walking routes leads to reduced earthworks).
1.6.1
The
construction and operation impacts resulting from the implementation of the
Project are specified in the EIA Report.
The EIA Report also specifies mitigation measures which need to be
implemented to ensure compliance with the required environmental criteria. These mitigation measures and their
implementation requirements are presented in the Implementation Schedule (Appendix
A). The EIA recommends that environmental
monitoring will be necessary to assess the effectiveness of measures
implemented to mitigate potential environmental impacts during construction of
the Project. Regular environmental
auditing during construction is also recommended to ensure that potential
impacts are adequately addressed through the implementation of the mitigation
measures defined in this EIA Report.
1.6.2
This
Manual provides the EM&A requirements recommended in the EIA Report to
ensure compliance with the specified mitigation measures. The main objectives of the EM&A programme are to:
·
provide
a database against which any short or long term environmental impacts of the
project can be determined;
·
provide
an early indication should any of the environmental control measures or
practices fail to achieve the acceptable standards;
·
monitor
the performance of the Project and the effectiveness of mitigation measures;
·
verify
the environmental impacts predicted in the EIA Study;
·
determine
Project compliance with regulatory requirements, standards and government
policies;
·
define
remedial action to be taken if unexpected problems or unacceptable impacts
arise; and
·
provide
data against which environmental audits may be undertaken.
1.7.1
The
scope of the EM&A programme is to:
·
implement
monitoring inspection and audit requirements;
·
implement
inspection requirements for mitigation measures;
·
liase with and provide environmental advice (as requested or when otherwise necessary)
to construction site staff on the comprehension and consequences of the
environmental audit;
·
identify
and resolve environmental issues and other functions as they may arise from the
construction works;
·
check
and quantify the Contractor's overall environmental performance, and remedial
actions to be taken to mitigate adverse environmental effects 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, as well as 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 predicted in
the EIA;
·
manage
and liaise with other individuals or parties concerning other environmental
issues which are deemed to be relevant to the construction process;
·
conduct
regular site inspections of a formal or informal nature to assess:
-
the level of the Contractor's general environmental
awareness;
-
the Contractor's implementation of the recommendations in the
EIA;
-
the Contractor's performance as measured by the EM&A;
-
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 summarise
project 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.
1.7.2
This
Manual contains the following information:
·
responsibilities of the contractor carrying out the
works (the Contractor), the engineer (the Engineer) and his/her representative (the
Engineer’s Representative (ER)), the environmental team (the Environmental Team
(ET)) and the independent checker (the Independent Checker (Environment)
(IC(E))) with respect to the environmental monitoring and audit requirements
during the course of the Project;
·
project organisation for the Project;
·
the basis for, and description of the broad approach
underlying the EM&A programme;
·
requirements with respect to the construction
programme schedule and the necessary environmental monitoring and audit programme
to track the varying environmental impacts;
·
details of the methodologies to be adopted, including
all field laboratories and analytical procedures, and details on quality
assurance and quality control programme;
·
the rationale on which the environmental monitoring
data will be evaluated and interpreted;
·
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;
·
requirements for review of EIA predictions and the
effectiveness of the mitigation measures/environmental management systems and
the EM&A programme.
1.7.3
For the purpose of this Manual, 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.
1.8.1
The tentative
construction programme is starting from Jan 2006 to
July 2007.
1.8.2
This programme is for the ET Leader to get an initial
idea of the projection of the works.
The ET leader shall make reference to the actual works progress and
programme during the construction stage to schedule the EM&A works, and the
Contractor shall provide the respective information to the ET Leader for
formulating the EM&A schedule.
The construction programme and related EM&A schedule shall be
updated in the baseline/monthly report submissions as necessary.
1.9.1
The
Environmental Team (ET) shall be employed by the Project Proponent to undertake
the EM&A works and shall not be in any way an associated body of the
Contractor. The Independent Checker (Environment) (IC(E))
shall be engaged by the
Project Proponent to audit the work of the ET. The IC(E)
shall not be in any way an associated bodies of the Contractor or the ET.
The ET Leader and the IC(E) shall have relevant
professional qualifications, or have sufficient relevant EM&A experience
subject to approval of the Environmental Protection Department (
1.9.2
The ET Leader shall possess at least 7 years of
EM&A experience and have the relevant professional qualifications. The
IC(E) shall have the same experience and professional qualifications as for the
ET Leader.
1.9.3
The IC(E) shall be employed by the Project Proponent
prior to commencement of construction of the Project. The role of the IC(E) shall be
independent from the management of construction works, but shall be empowered
to audit the environmental performance of construction.
1.9.4
The Project organisation and lines of communication
with respect to environmental protection works is shown in Figure 1.3.
1.9.5
The responsibilities of respective parties are as follows:
The Contractor
1.9.6
The
term "Contractors" should be taken to mean all construction
contractors, operators and sub-contractors, working on site at any one time.
Other than reporting to the Engineer, the Contractors should:
Environmental Team
1.9.7
The ET
leader and the ET should not be in any way an associated body of the
Contractor. The ET should be led and managed by the ET leader. The ET leader
should have relevant education, training, knowledge, professional
qualifications and at least 7 years experience in EM&A for environmental
management works subject to approval of the ER's Representative and the
Director of Environmental Protection (DEP).
1.9.8
Suitably
qualified staff should be included in the ET, and resources for the
implementation of the EM&A programme should be
allocated in time under the Contract, to enable fulfilment
of the project's EM&A requirements as specified in the EM&A Manual.
1.9.9
The ET
leader and the ET are employed to conduct the EM&A programme
and ensure the Contractor's compliance with the project's environmental
performance requirements during construction and operation of the Project. The
duties are:
Engineer or Engineer’s Representative
1.9.10
The
term Engineer, or Engineer's Representative (ER), refers to the organisation responsible for overseeing the construction
works or operation of the Project and 'monitoring' the works undertaken by
various Contractors, and for ensuring that they are undertaken by the
Contractors in accordance with the specification and contractual requirements.
The ER should:
Independent Checker (Environment)
1.9.11
The
IC(E) should advise the ER on environmental issues related to the Project. The
role of the IC(E) should be independent from the management of construction and
operation activities, but he/she should be empowered to audit the environmental
performance of construction and operation.
1.9.12
The
IC(E) should be employed prior to commencement of construction of the Project.
The IC(E) should have at least 7 years experience in EM&A or environmental management.
The appointment of the IC(E) is subject to the approval of the ER.
1.9.13
The
IC(E) should audit the overall EM&A programme
including the implementation of all environmental mitigation measures,
submissions relating to EM&A, and any other submission required under the
this Manual.
1.9.14
In
addition, the IC(E) should be responsible for verifying the environmental
acceptability of permanent and temporary works, and relevant design plans.
1.9.15
The
IC(E) should arrange and conduct monthly general site inspections of the work
site during the construction period. The IC(E) should ensure the impact
monitoring is conducted according to the prescribed schedule at the correct
locations.
1.9.16
The
IC(E) should report the findings of the site inspections and other environmental
performance reviews to DSD and
1.9.17
Appropriate
resources should also be allocated under the Contractor and the ER to fulfil their duties specified in this Manual.
1.9.18
The
main duty of the IC(E) is to carry out environmental audit of the construction
and operation of the Project; this should include, inter alia,
the followings:
1.10.1
The
remainder of the Manual is set out as follows:
·
Section 2 details the requirements for air quality monitoring;
·
Section 3 details the requirements for water quality monitoring;
·
Section
4 details the requirements
for ecology impact monitoring,
·
Section
5 details the requirements
for waste management;
·
Section
6 details the requirements
for cultural heritage;
·
Section
7 details the requirements
for land contamination;
·
Section 8 describes the scope and frequency of site auditing;
and
·
Section 9 details the EM&A reporting requirements.
1.10.2
The
EM&A Manual is an evolving document that should be updated to maintain its
relevance as the Project progresses.
The primary focus for these updates will be to ensure the impacts
predicted and the recommended mitigation measures remain consistent and
appropriate to the manner in which the works are to be carried out.
2.1.1
This
section presents the requirements, methodology, equipment, monitoring
locations, criteria and protocols for the monitoring and audit of air quality
impacts during the construction phase of the Project. No operation phase air
quality monitoring is recommended.
2.1.2
The
objectives of the air quality monitoring shall be:
· to identify the extent of construction dust impacts on sensitive receivers;
· to determine the effectiveness of mitigation measures to control fugitive dust emission from activities during construction phase;
· to audit the compliance of the Contractor with regard to dust control, contract conditions and the relevant dust impact criteria;
· to recommend further mitigation measures if found to be necessary; and
· to comply with Action and Limit (A/L) Levels for air quality as defined in this Manual.
2.2.1
The
criteria against which ambient air quality monitoring shall be assessed are the
Hong Kong Air Quality Objectives (AQOs) for Total
Suspended Particulates (
·
24-hour
·
1-hour
2.2.2
These
levels are not to be exceeded at Air Sensitive Receivers (ASRs).
2.3.1
The
2.3.2
Air
samples shall be drawn at a controlled rate through a high volume sampler (HVS)
fitted with a conditioned, pre-weighed filter paper. After sampling for 24-hours, the filter
paper with retained particles is collected and returned to the laboratory for
drying in a desiccator followed by accurate
weighing. 24-hour average
2.3.3
All
relevant data including temperature, pressure, weather conditions, elapsed-time
meter reading for the start and stop of sampler, identification and weight of
the filter paper, and other special phenomena and work progress of the
concerned site, etc., shall be recorded in detail. A sample data sheet is shown
in Appendix B.
2.3.4
HVS in
compliance with the following specifications shall be used for carrying out the
1-hour and 24-hour monitoring:
·
0.6 -
·
equipped with a timing/control device with ± 5 minutes accuracy for 24 hours
operation;
·
installed with elapsed-time meter with ± 2 minutes accuracy for 24 hours
operation;
·
capable of providing a minimum exposed area of
·
flow control accuracy: ±
2.5% deviation over 24-hour sampling period;
·
incorporated with an electronic mass flow rate
controller or other equivalent devices;
·
equipped with a flow recorder for continuous
monitoring;
·
provided with a peaked roof inlet;
·
incorporated with a manometer;
·
able to hold and seal the filter paper to the sampler
housing at horizontal position;
·
filter can be changed easily; and
·
capable of 24-hour continuous operation.
2.3.5
The ET
shall be responsible for the provision of the monitoring equipment. ET shall
ensure that sufficient number of HVS’s with appropriate
calibration kit are available for carrying out the baseline, regular impacts
monitoring and ad-hoc monitoring.
The HVS’s shall be equipped with an electronic
mass flow controller and be calibrated against a traceable standard at regular
intervals in accordance with requirements stated in the manufacturers operating
manual and as described below. All
the equipment, calibration kit, filter papers, etc., shall be clearly labelled.
2.3.6
The
flow rate of each HVS with mass flow controller shall be calibrated using an
orifice calibrator. Initial
calibration of the dust monitoring equipment shall be conducted upon
installation and prior to commissioning.
One point flow rate calibration shall be carried out every two
months. Five-point calibration
shall be carried out every six months.
2.3.7
The
flow-rate of the sampler before and after the sampling exercise with the filter
in position shall be verified to be constant and be recorded on the data sheet.
2.4.1
One representative
air sensitive receiver is proposed for monitoring during the construction phase
of the Project (Table 2.1, Figure 2.1). Prior to commencement of the EM&A programme, the ET shall discuss and agree with the
Engineer, IC(E) and
Table 2.1
Air Quality Monitoring
Location
|
Identification Number |
Location |
|
GCA B1 |
|
2.4.2
When alternative
monitoring locations are proposed, the monitoring locations shall be chosen
based on the following criteria:
·
at the
site boundary or such locations close to the major dust emission source;
·
close
to the sensitive receivers; and
·
prevailing
meteorological conditions.
2.4.3
When
positioning the HVS’s, the following shall be noted:
· a horizontal platform with appropriate support to secure the samplers against gusty wind shall be provided;
·
samplers shall be placed at
least
· 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
·
a minimum
· no furnace or incinerator flue should be nearby;
· airflow around the sampler should be unrestricted;
·
the sampler should be more than
· any wire fence and gate to protect the sampler, shall not cause any obstruction during monitoring;
· permission must be obtained to set up the samplers and to obtain access to the monitoring stations; and
· a secured supply of electricity is needed to operate the samplers.
2.5.1
Baseline
monitoring shall be carried out to determine the ambient 1-hour and 24‑hour
2.5.2
2.5.3
In
case baseline monitoring cannot be carried out at the designated monitoring
locations during the baseline monitoring period, the ET Leader shall carry out
the monitoring at alternative locations which can effectively represent the baseline
conditions at the impact monitoring locations. The alternative monitoring
locations shall be approved by the Engineer and agreed with the IC(E).
2.5.4
In
exceptional cases, when insufficient baseline monitoring data or questionable
results are obtained, the ET shall liaise with the IC(E) and
2.5.5
The
baseline monitoring will provide data for the determination of the appropriate
Action levels with the Limit levels set against statutory or otherwise agreed
limits.
2.5.6
Baseline checking of ambient
2.6.1
The
monthly schedule of the compliance and impact monitoring programme
shall be drawn up by the ET one month prior to commencement of the scheduled
construction period. For regular
impact monitoring, a sampling frequency of at least once in every six days
shall be strictly observed at all of the monitoring stations for 24-hour
Table 2.2
Air Quality Impact Monitoring Programme (
|
Sampling duration |
Frequency |
|
1 hour |
·
3 times every 6 days (as required in case of
complaints) |
|
24 hours |
·
Once every 6 days |
2.6.2
Before
commencing the monitoring, the ET shall inform the IC(E) of the impact
monitoring programme such that the IC(E) can conduct
on-site audits to ensure the accuracy of the impact monitoring results.
2.7.1
Action
and Limit (A/L) levels that provide an appropriate framework for the
interpretation of monitoring results have to be agreed between ET, IC(E),
Table 2.3
Action and Limit Levels for Air Quality
|
Parameter |
Action
Level (1) |
Limit
Level |
|
|
§
BL £ 200 μg m-3, §
BL > 200 μg m-3,
|
260 μg
m-3 |
|
|
§
BL £ 384 μg m-3, §
BL
> 384 μg m-3, |
500 μg
m-3 |
(1) BL = Baseline
level,
2.8.1
The EAP
is based on the principle of prescriptive procedures and actions associated
with the measurement of certain defined levels of air pollution, as recorded by
the environmental monitoring process, and the agreed A/L levels. In cases these A/L levels are exceeded,
the ET, the IC(E), the Engineer and the Contractor
shall carry out the relevant actions prescribed in the EAP in Table 2.4.
Table 2.4
Event / Action
Plan for Air Quality
|
EVENT |
ACTION |
|||
|
ET |
IC(E) |
Engineer |
CONTRACTOR |
|
|
ACTION LEVEL |
||||
|
1. Exceedance
for one sample |
1. Identify source,
investigate the causes of complaint and propose remedial measures; 2. Inform IC(E) and
Engineer; 3. Repeat measurement
to confirm finding; 4.
Increase to daily monitoring. |
1.
Check monitoring data submitted by ET; 2.
Check Contractor’s working method. |
1.
Notify Contractor. |
1. Rectify any
unacceptable practice; 2. Amend working methods if
appropriate. |
|
2. Exceedance
for two or more consecutive samples |
1. Identify source; 2. Inform IC(E) and
Engineer; 3. Advise Engineer on
effectiveness of proposed remedial measures; 4. Repeat
measurements to confirm findings; 5. Increase to daily
monitoring; 6. Discuss with IC(E)
and Contractor remedial actions required; 7. If exceedance continues, arrange meeting with IC(E) and
Engineer; 8. If exceedance stops, cease additional monitoring. |
1. Check monitoring
data submitted by ET; 2. Check Contractor’s
working method; 3. Discuss with ET
and Contractor possible remedial measures; 4. Advise ET on the
effectiveness of proposed remedial measures; 5. Supervise
implementation of remedial measures. |
1. Confirm
in writing receipt of notification of exceedance; 2. Notify Contractor; 3. Supervise proper
implementation of remedial measures. |
1. Submit proposals for
remedial measures to Engineer within three working days of notification; 2. Implement agreed
proposals; 3. Amend proposal if appropriate. |
|
LIMIT LEVEL |
||||
|
1. Exceedance
for one sample |
1. Identify
source, investigate causes of exceedance and
propose remedial measures; 2. Inform
IC(E), Engineer, Contractor and 3. Repeat
measurement to confirm finding; 4. Increase
to daily monitoring; 5. Assess
effectiveness of Contractor’s remedial actions and keep IC(E), |
1. Check monitoring
data submitted by ET; 2. Check Contractor’s
working method; 3. Discuss with ET
and Contractor possible remedial measures; 4. Advise Engineer on
effectiveness of proposed remedial measures; 5. Supervise
implementation of remedial measures. |
1. Confirm in writing
receipt of notification of exceedance; 2. Notify Contractor; 3. Supervise proper
implementation of remedial measures. |
1.
Take immediate action to avoid further exceedance; 2.
Submit proposals for remedial actions to IC(E)
within three working days of notification; 3.
Implement the agreed proposals; 4. Amend proposals if
appropriate. |
|
2 Exceedance
for two or more consecutive samples |
1. Notify IC(E),
Engineer, Contractor and 2. Identify source; 3. Repeat measurement
to confirm findings; 4. Increase to daily
monitoring; 5. Carry out analysis
of Contractor’s working procedures to determine possible mitigation measures
to be implemented; 6. Arrange meeting
with IC(E) and Engineer to discuss remedial actions to be taken; 7. Assess
effectiveness of Contractor’s remedial actions and keep IC(E), 8. If exceedance stops, cease additional monitoring. |
Discuss amongst Engineer, ET,
and Contractor the potential remedial actions; Review Contractor’s remedial
actions whenever necessary to assure their effectiveness, and advise Engineer
accordingly; Supervise implementation of
remedial measures. |
Confirm receipt of notification of exceedance in writing; Notify Contractor; In consultation with the IC(E), agree with the
Contractor the remedial measures to be implemented; Supervise proper implementation of remedial
measures; If exceedance continues,
consider what portion of the works is responsible and instruct the Contractor
to stop that portion of work until exceedance has
abated. |
1. Take immediate
action to avoid further exceedance; 2. Submit proposals
for remedial actions to IC(E) within three 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 instructed by Engineer until the exceedance
is abated. |
3.1.2
The
objectives of the water quality monitoring programme
are as follows:
§
to
determine the effectiveness of the construction and operation phase controls
and mitigation measures employed, and the need for supplementary mitigation
measures; and
§
to
check compliance with relevant WQO.
3.2.1
The ET
shall be responsible for monitoring the parameters as shown below during the
construction phase of the Project to ensure that any deterioration of water
quality would be readily detected and timely rectifying action can be
undertaken.
Construction Phase Monitoring
3.2.2
The
water quality parameters which need to be monitored are as follows:
§
Marine
water quality - dissolved oxygen (DO), temperature, turbidity, suspended solids
(SS), pH and salinity
§
Stream
water quality - dissolved oxygen (DO), temperature, turbidity, suspended solids
(SS) and pH
3.2.3
Additional
water quality parameters are required to monitor marine and stream water
quality when the permanent low flow drainage system is not yet completed but turf
establishment has to be in place during construction phase. The ET Leader shall be responsible for
liaison with the Contractor on the turf establishment programme.
3.2.4
Additional
marine and stream water quality monitoring parameters include nitrate nitrogen
(NO3-N), nitrite nitrogen (NO2-N), ammonia nitrogen (NH3-N),
total phosphate (TP) and selected pesticides parameters. The ET Leader shall be responsible for
confirming with the Project Proponent and the Contractor the actual pesticides
used during the turf establishment before the required pesticides testing are
carried out.
3.2.5
The ET
Leader shall propose the additional monitoring parameters for approval by
IC(E), Engineer,
3.2.6
In
association with the water quality parameters, relevant data including
monitoring location/position, time, weather conditions, and any special
phenomena and work underway at the construction site shall also be measured.
3.2.7
A
sample monitoring record sheet and data format are shown in Appendix B.
3.3.1
The
equipment listed below shall be supplied by the ET and approved by the IC(E)
and the Engineer for water quality monitoring.
Dissolved Oxygen and Temperature Measuring
Equipment
3.3.2
The
instrument shall be a portable and weatherproof DO measuring instrument
complete with cable and sensor, and use a DC power source. The equipment
shall be capable of measuring:
·
dissolved oxygen levels in the range of 0 - 20 mg L-1 and 0 - 200%
saturation; and
·
a temperature of 0 - 45 degrees Celsius.
3.3.3
It
shall have a membrane electrode with automatic temperature compensation complete
with a cable. Sufficient stocks of spare electrodes and cables shall be
available for replacement where necessary. (For example, YSI model 59 meter,
YSI 5739 probe, YSI
3.3.4
Should
salinity compensation not be built-in in the DO equipment, in-situ salinity
shall be measured to calibrate the DO equipment prior to each DO measurement.
Turbidity Measurement Instrument
3.3.5
Turbidity
shall be measured in situ by the nephelometric
method. The instrument shall be portable and weatherproof turbidity measuring
instrument using a DC power source complete with cable, sensor and
comprehensive operation manuals. It shall have a photoelectric sensor
capable of measuring turbidity between 0 - 1000 NTU (for example, Hach model 2100P or an approved similar instrument). The
cable shall not be less than
Suspended solids
3.3.6
A
water sample at least
Sampler
3.3.7
A
water sampler is required. It shall comprise a transparent PVC cylinder,
with a capacity of not less than 2 litres, which can
be effectively sealed with latex cups at both ends. The sampler shall
have a positive latching system to keep it open and prevent premature closure
until released by a messenger when the sampler is at the selected water depth
(for example, Kahlsico Water Sampler or an approved
similar instrument).
Water Depth
Detector
3.3.8
A portable,
battery-operated echo sounder shall be used for the determination of water
depth at each designated monitoring station. This unit can either be hand
held or affixed to the bottom of the work boat, if the same vessel is to be
used throughout the monitoring programme.
Salinity
3.3.9
A
portable salinometer capable of measuring salinity in
the range of 0 - 40 parts per thousand (ppt) shall be
provided for measuring salinity of the water at each monitoring location.
pH
3.3.10
The
instrument shall consist of a potentiometer, a glass electrode, a reference
electrode and a temperature-compensating device. It shall be readable to 0.1pH
in a range of 0 to 14. Standard buffer solutions of at least pH 7 and pH 10
shall be used for calibration of the instrument before and after use. Details
of the method shall comply with APHA, 19th ed. 4500-HTB.
Flow Rate Meter
3.3.11
A
portable, battery-operated flow meter should be used for the determination of
water depth at each designated monitoring location and record in m³/s. A hand
held or meter fixed to the underside of the survey boat may be used.
Sample Containers
and Storage
3.3.12
Water
samples for laboratory analysis shall be stored in high density polythene
bottles with no preservative added, packed in ice (cooled to
Monitoring Position
Equipment
3.3.13
A
hand-held or boat-fixed type digital Differential Global Positioning System
(DGPS) with way point bearing indication or other equipment instrument of
similar accuracy, shall be provided and used during marine water monitoring to
ensure the monitoring vessel is at the correct location before taking
measurements.
Calibration of
In-Situ Instruments
3.3.14
All in
situ monitoring instruments shall be checked, calibrated and certified by a
laboratory accredited under HOKLAS or any other international accreditation scheme
before use and subsequently re-calibrated at three monthly intervals throughout
all stages of the water quality monitoring programme.
Responses of sensors and electrodes shall be checked with certified standard
solutions before each use. Wet bulb calibration for a DO meter shall be
carried out before measurement at each monitoring location.
3.3.15
Sufficient
stocks of spare parts shall be maintained for replacements when
necessary. Backup monitoring equipment shall also be made available so
that monitoring can proceed uninterrupted even when some equipment is under
maintenance, calibration, etc.
Laboratory Analysis
3.3.16
All
laboratory work shall be carried out in a HOKLAS accredited laboratory. Water
samples of about 1,000 ml shall be collected at the monitoring and control
stations for carrying out the laboratory determinations. The determination work
shall start within 24 hours after collection of the water samples. The analyses
shall follow the standard methods according to APHA Standard Methods for the Examination
of Water and Wastewater, 19th Edition, or an equivalent method
approved by
Table 3.1
Methods and Detection Limits
for Laboratory Analysis
|
Parameter |
Recommended
Method |
Detection Limit |
|
Suspended
Solids |
APHA 2540 D |
0.1 mg/L |
|
Nitrate Nitrogen |
APHA 4500-NO3- |
0.01 mg/L |
|
Nitrite Nitrogen |
APHA 4500-NO2- |
0.01 mg/L |
|
Ammonia Nitrogen |
APHA 4500-NH3(D) |
0.01 mg/L |
|
Total Inorganic Nitrogen |
APHA 4500-Norg |
0.01 mg/L |
|
Total phosphorus |
|
0.1 mg/L |
|
Chlorpyrifos* |
APHA Standard Methods or equivalent |
0.5 µg/L |
|
Imazaquin* |
APHA Standard Methods or equivalent |
0.5 µg/L |
|
Glyphosate* |
APHA Standard Methods or equivalent |
0.5 µg/L |
|
Oxadiazon* |
APHA Standard Methods or equivalent |
0.5 µg/L |
|
2,4-D/Mecoprop* |
APHA Standard Methods or equivalent |
0.5 µg/L |
|
Chlorothalonil* |
APHA Standard Methods or equivalent |
0.5 µg/L |
|
Mancozeb* |
USEPA |
0.5 µg/L |
|
Iprodione* |
USEPA |
0.5 µg/L |
|
Fosetyl Aluminum* |
APHA Standard Methods or equivalent |
0.5 µg/L |
|
Chlorpyrifos* |
USEPA 8080
& 8082 SW-846 |
0.5 µg/L |
|
Fipronil* |
APHA Standard Methods or equivalent |
0.5 µg/L |
|
Imidachloprid* |
APHA Standard Methods or equivalent |
0.5 µg/L |
Notes:
APHA: American
Public Health Association. Standard Methods for the Examination of Water and
Wastewater Ed 19
* : subject to
changes
3.3.17
ET
leader shall liase with Project Proponent and confirm
the type of the pesticide to be applied at the golf course. ET leader shall update the
monitoring parameter, detection limit and analytical method accordingly. The ET Leader should report and seek
agreement from IC(E), ER and
3.3.18
For
each of the testing methods, details shall be submitted to the Director of
Environmental Protection (DEP) or his representatives for approval prior to the
commencement of the monitoring programme. The submitted
information should include pre-treatment procedures, instrument use, Quality
Assurance/Quality Control (QA/QC) details (such as blank, spike recovery,
number of duplicate samples per-batch etc), detection limits and accuracy. The
QA/QC details shall be in accordance with requirements of HOKLAS or another
internationally accredited scheme. The QA/QC results shall be reported.
3.4.1
The
water monitoring locations (Figure 3.1) are summarized in Table 3.2. The status and locations of sensitive receivers
may be subject to change, and if so, the ET Leader shall propose updated
monitoring locations and seek agreement from the Engineer, IC(E),
3.4.2
The ET
shall conduct the construction phase water quality monitoring while the Project
Proponent shall conduct the operational phase EM&A. Prior to the commencement of the
construction EM&A programme, the ET Leader shall
discuss and agree with the Engineer, the ET, IC(E),
Table 3.2
Construction Phase Water
Quality Monitoring Locations
|
Identification Number |
Location |
Co-ordinates |
Monitoring parameters |
|
|
Marine
Water (9 stations) |
Y |
X |
|
|
|
|
Tai Tau Chau Fish Culture Zone |
851482 |
825428 |
DO, Temp., Turbidity,
SS, pH and Salinity (both mid-flood and mid-ebb tides and at three water
depths). Additional
parameters are required when the low flow drainage system is not completed
include NO3-N, NO2-N, NH3-N, TP and selected
pesticides. |
|
KLW |
Kai Lung Wan
Fish Culture Zone |
848994 |
825499 |
|
|
KS |
Kau Sai Fish Culture Zone |
850892 |
822544 |
|
|
M_BP |
Temporary
barging point |
851269 |
825098 |
|
|
M_RO1 |
Desalination
plant south of the existing pier |
849395 |
828057 |
|
|
M _ Marsh |
Discharge
point at the existing marsh |
850639 |
825810 |
|
|
M _ Coral |
Marine water
of Port Shelter |
851735 |
824279 |
|
|
M _ A |
Water
Control Station of Port Shelter |
849821 |
826997 |
|
|
M _ B |
Water
Control Station of Port Shelter |
852643 |
822470 |
|
|
Fresh
Water (7 stations) |
|
|
|
|
|
F_UA, F_DA |
Upstream and
downstream of stream A |
856762 (UA) 850898 (DA) |
824317 (UA) 824510 (DA) |
DO, Temp.,Turbidity, SS and pH (at mid-water depth). Additional
parameters are required when the low flow drainage system is not completed
include NO3-N, NO2-N, NH3-N, TP and selected pesticides. |
|
F_UB, F_DB |
Upstream and
downstream of stream B |
851142 (UB) 851132 (DB) |
824021 (UB) 824196 (DB) |
|
|
F_UC, F_DC |
Upstream and
downstream of stream C |
851339 (UC) 851515 (DC) |
823962 (UC) 823688 (DC) |
|
|
F _ Inland M |
Downstream
of the existing marsh (Inland) |
850434 |
825818 |
|
Note: Monitoring location A (M_A) can make
cross reference to PM4 and Monitoring location B (M_B) can make cross reference
to PM9.
3.4.3
When
proposed, alternative monitoring locations shall be chosen based on the
following criteria:
§
at
locations close to and preferably at the boundary of the mixing zone of major
site activities which are likely to have water quality impacts as indicated in
the EIA;
§
close to
sensitive receivers which are directly or likely to be affected; and
§
care shall
be taken to cause minimal disturbance to the sensitive receivers during
monitoring.
3.4.4
Control
stations are necessary to compare the water quality from potentially impacted
sites with the ambient water quality. Control stations shall be located within the
same body of water as the impact monitoring stations but shall be outside the
area of influence of the works and, as far as practicable, not affected by any
other works.
Site
Record
3.4.5
In
addition to the water quality parameters for both marine and stream water
quality, other relevant data including monitoring location/position, time,
weather conditions, sea conditions (where appropriate), tidal stage (where
appropriate), special phenomena and work activities at the construction site
shall also be measured and recorded. A sample data sheet is shown in Appendix
B.
3.5.1
Baseline
conditions for water quality shall be established and agreed upon with
3.5.2
There
shall be no construction works in the vicinity of the stations during baseline
monitoring.
3.5.3
In
exceptional cases when insufficient baseline monitoring data or questionable
results are obtained, the ET Leader shall seek approval from IC(E) and
3.5.4
For
marine water quality, where appropriate, measurements shall be taken at both
mid-flood and mid-ebb tides and at three water depths (
3.5.5
For the
stream course, measurements shall be taken at mid-water depth. The status
and locations of water sensitive receivers and the works activities may be
subject to change, and if so, the ET Leader shall propose with justification
for changes to monitoring locations or other requirements of the EM&A water
quality monitoring programme, and seek approval from
the IC(E),
3.6.1
For
construction phase marine monitoring, dredging works for submarine intake and
outfall of desalination plant and temporary pier construction would need to be
monitored. For land-based
constructions monitoring of sensitive streams, it should be carried out. Additional water quality parameters are
required to monitor marine and stream water qualities when the permanent low
flow drainage system is not yet completed but turf establishment has to be in
place during construction phase, monitoring should be also be carried. The proposed permanent low drainage
system will be completed in one year.
Construction sequence are starting at southern zone (Holes 11-16 between
Mar 06 to Jul 06), then northern zone (Holes 3-9 between Jul 06 to Oct 06) and
finally (Holes 1, 2, 10, 17, 18 between Oct 06 to Mar 07).
3.6.2
During
the construction phase of marine and stream works, monitoring shall be
undertaken three days per week, at mid-flood and mid-ebb tides, with
sampling/measurement at the designated monitoring stations. The interval between 2 monitoring events
should not be less than 36 hours.
Proposed water quality monitoring schedule shall be submitted to
3.6.3
During
the construction phase, impact monitoring shall be carried our three days per
week during the first three months.
If exceedances are not record during the
three-month period, the monitoring frequency can then be reduced to once per
week, with sampling/measurement at the designated monitoring stations. However, the ET Leader should report and
seek agreement from IC(E), ER and
3.6.4
Upon a
completion of all construction activities, a post construction monitoring
exercise on marine and stream water qualities shall be carried out. Measurements shall be taken at all
designated monitoring locations including control stations, 3 days per week,
for a period of 4 consecutive weeks prior to commencement of works. Monitoring location at RO (Fig 3.2)
shall be carried out on bi-monthly basis after the post construction monitoring
(This is serve supplementary data for the coral monitoring).
3.7.1
The
water quality criteria, namely Action and Limit levels, are shown in
Table 3.3. These criteria should be applied to ensure that any
deterioration of water quality is readily detected and timely rectifying action
is taken. Should the water quality parameters monitoring results at any
designated impact monitoring station exceed the water quality criteria, actions
in accordance with the Event and Action Plan in Table 3.4 shall be carried
out.
Table 3.3
Action and Limit Levels
for Water Quality Monitoring
|
Parameters |
Action |
Limit |
|
DO in
mg L-1 (Surface,
Middle & Bottom) |
Marine
Water Surface and Middle 5 percentile of baseline
data for surface and middle layer Bottom 5 percentile of baseline
data for bottom layer |
Marine
Water Surface and Middle 1 percentile of baseline
data for surface and middle layer or 5 mg/L for FCZs Bottom 1 percentile of baseline data
for bottom layer or 2 mg/L for FCZs |
|
DO in
mg L-1 (mid-depth) |
Inland
Water 5 percentile of baseline
data |
Inland
Water 4 mg/L |
|
SS in
mg L-1 (depth-averaged) |
95 percentile of baseline
data |
99 percentile of baseline
data |
|
Turbidity
in NTU (depth-averaged) |
95 percentile of baseline
data |
99 percentile of baseline
data |
|
Salinity
in ppt (depth-averaged) |
95 percentile of baseline
data |
99 percentile of baseline
data |
|
Ammonia
Nitrogen (depth-averaged) |
95 percentile of baseline
data |
99 percentile of baseline
data |
|
Nitrate
Nitrogen (depth-averaged) |
95 percentile of baseline
data |
99 percentile of baseline
data |
|
Nitrite
Nitrogen (depth-averaged) |
95 percentile of baseline
data |
99 percentile of baseline
data |
|
|
95 percentile of baseline
data |
99 percentile of baseline
data |
|
Total
Phosphate in mgL-1 (depth-averaged) |
95 percentile of baseline
data |
99 percentile of baseline
data |
|
Pesticides
in µg/L-1 (depth-averaged) |
Level of detection limit |
Level of detection limit |
|
Chlorpyrifos* |
Level of detection limit |
Level of detection limit |
|
Imazaquin* |
Level of detection limit |
Level of detection limit |
|
Glyphosate* |
Level of detection limit |
Level of detection limit |
|
Oxadiazon* |
Level of detection limit |
Level of detection limit |
|
2,4-D/Mecoprop* |
Level of detection limit |
Level of detection limit |
|
Chlorothalonil* |
Level of detection limit |
Level of detection limit |
|
Mancozeb* |
Level of detection limit |
Level of detection limit |
|
Iprodione* |
Level of detection limit |
Level of detection limit |
|
Fosetyl Aluminum* |
Level of detection limit |
Level of detection limit |
Notes:
1. For
DO, non-compliance of the water quality limits occurs when monitoring result is
lower than the limits.
2. For
SS and turbidity, non-compliance of the water quality limits occurs when
monitoring result is higher than the limits.
3. All figures
given in the table are used for reference only and the
4. "Depth-averaged"
is calculated by taking the arithmetic means of reading of all three depths.
* Monitored
pesticides are subjected to change.
For any pesticides being monitored, the
Table 3.4
Event and Action
Plan for Water Quality
|
Event |
ET Leader |
IC(E) |
Engineer |
Contractor |
|
ACTION LEVEL |
||||
|
Action level being
exceeded by one sampling day |
Repeat in situ
measurement to confirm findings; Identify reasons
for non-compliance and source(s) of impact; Inform IC(E) and
Contractor; Check monitoring data,
all plant, equipment and Contractor's working methods; Discuss mitigation
measures with IC(E) and Contractor; Repeat measurement
on next day of exceedance. |
Discuss mitigation
measures with ET and Contractor ; Review proposals on
mitigation measures submitted by Contractor and advise the Engineer
accordingly; Assess
effectiveness of implemented mitigation measures. |
Discuss proposed
mitigation measures with IC(E); Make agreement on
mitigation measures to be implemented. Assess effectiveness
of the implemented mitigation measures. |
Inform the
Engineer and confirm in writing notification of the non-compliance; Rectify
unacceptable practice; Check all plant
and equipment; Consider changes
in working methods; Discuss with ET
and IC(E) and propose mitigation measures to IC(E) and Engineer; Implement agreed
mitigation measures. |
|
Action level being
exceeded by more than two consecutive sampling days |
Repeat in situ
measurement to confirm findings; Identify reasons for
non-compliance and source(s) of impact; Inform IC(E) and
Contractor; Check monitoring
data, all plant, equipment and Contractor's working methods; Discuss mitigation
measures with IC(E) and Contractor; Ensure mitigation
measures are implemented; Prepare to
increase to daily monitoring; Repeat measurement
on next day of exceedance. |
Discuss mitigation
measures with ET and Contractor ; Review proposals
on mitigation measures submitted by Contractor and advise the Engineer
accordingly; Assess
effectiveness of implemented mitigation measures. |
Discuss the
proposed mitigation measures with IC(E); Make agreement on
mitigation measures to be implemented; Assess
effectiveness of implemented mitigation measures. |
Inform Engineer and
confirm in writing notification of the non-compliance; Rectify
unacceptable practice; Check all plant
and equipment; Consider changes
in working methods; Discuss with ET
and IC(E) and propose mitigation measures to IC(E) and Engineer within three
working days; Implement agreed
mitigation measures. |
|
LIMIT LEVEL |
||||
|
Limit level being
exceeded by one sampling day |
Repeat in situ
measurement to confirm findings; Identify reasons
for non-compliance and source(s) of impact; Inform IC(E) Contractor
and Check monitoring
data, all plant, equipment and Contractor's working methods; Discuss mitigation
measures with IC(E), Engineer and Contractor; Ensure mitigation
measures are implemented; Increase to daily
monitoring until no exceedance of Limit level. |
Discuss mitigation
measures with ET and Contractor; Review proposals
on mitigation measures submitted by Contractor and advise the Engineer
accordingly; Assess
effectiveness of implemented mitigation measures. |
Discuss proposed
mitigation measures with IC(E), ET and Contractor; Request Contractor
to critically review the working methods; Make agreement on
mitigation measures to be implemented; Assess
effectiveness of implemented mitigation measures. |
Inform Engineer
and confirm in writing notification of the non-compliance; Rectify
unacceptable practice; Check all plant
and equipment; Consider changes
in working methods; Discuss with ET,
IC(E) and Engineer and propose mitigation measures to IC(E) and Engineer
within three working days; Implement agreed
mitigation measures. |
|
Limit level being exceeded by more than
two consecutive sampling days |
Repeat in situ
measurement to confirm findings; Identify reasons
for non-compliance and source(s) of impact; Inform IC(E),
Contractor and Check monitoring
data, all plant, equipment and Contractor's working methods; Discuss mitigation
measures with IC(E), Engineer and Contractor; Ensure mitigation
measures are implemented; Increase to daily
monitoring until no exceedance of Limit level
for two consecutive days. |
Discuss mitigation
measures with ET and Contractor; Review proposals
on mitigation measures submitted by Contractor and advise Engineer
accordingly; Assess
effectiveness of implemented mitigation measures. |
Discuss proposed mitigation measures with IC(E), ET and Contractor; Request Contractor
to critically review working methods; Make agreement on
mitigation measures to be implemented; Assess
effectiveness of implemented mitigation measures; Consider and if necessary
instruct Contractor to slow down or to stop all or part of the construction
activities until no exceedance of Limit level. |
Inform Engineer
and confirm in writing notification of the non-compliance; Rectify
unacceptable practice; Check all plant and
equipment; Consider changes
of working methods; Discuss with ET,
IC(E) and Engineer and propose mitigation measures to IC(E) and Engineer
within three working days; Implement agreed
mitigation measures; As directed by the
Engineer, slow down or stop all or part of the construction activities until
no exceedance of Limit level. |
3.8.1
Monitoring
and auditing for marine and freshwater qualities are necessary during the
operation phase of the proposed third golf course. This is to ensure the compliance of water
quality to relevant WQO standards at Port Shelter,
3.8.2
The
Project Proponent shall carry out the operation phase marine water quality
monitoring. The following is the
general guidelines based on the existing golf course EM&A manual. During the operation phase, water
quality monitoring programme shall include the
following three tasks:
· Marine water quality monitoring;
· Effluent monitoring from desalination plant; and
· Water quality monitoring at marine sensitive receivers.
Effluent Quality for the Desalination Plant
3.8.3
It is
proposed that effluent from the proposed desalination plant under normal
operation be monitored. Samples shall be taken from
3.8.4
In
addition, the outfall of desalination plant shall be monitored at the
designated location (RO) as shown in Figure 3.2 at least once every 2 weeks
during the first 3 months after commissioning of the desalination plant. Monitoring frequency after then should
be agreed with
3.8.5
The
effluent results reflect whether the effluent quality is in compliance with the
discharge licence requirements. In case of
non-compliance, suitable actions shall be undertaken to notify the plant
operator of the non-compliance and to identify the sources of exceedance. The operating conditions of the treatment
systems shall be investigated. Corrective and remedial actions shall be
implemented to improve the effluent quality. The monitoring team shall also
increase monitoring frequency until the effluent quality is in compliance with
the discharge licence requirements. All
non-compliance and propose preventive measures shall be documented.
Marine and Stream Water Quality Monitoring (including lakes and existing
reservoir)
3.8.6
The
water monitoring locations (Figure 3.2) are summarized in Table 3.5. The status and location of sensitive
receiver may change after issuing this manual. If such cases exist, the Project
Proponent shall propose updated monitoring locations and seek agreement from
the
Table 3.5
Operation Phase Water Quality
Monitoring Locations
|
Identification Number |
Location |
Co-ordinates |
Monitoring parameters |
|
|
Marine
Water (9 stations) |
Y |
X |
|
|
|
|
Tai Tau Chau Fish Culture Zone |
851482 |
825428 |
pH,
temperature, DO, SS, turbidity, salinity, nitrate nitrogen (NO3-N),
nitrite nitrogen (NO2-N), ammonia nitrogen (NH3-N),
total phosphate (TP), Chlorophyll-a and specific pesticides. |
|
KLW |
Kai Lung Wan
Fish Culture Zone |
848994 |
825499 |
|
|
KS |
Kau Sai Fish Culture Zone |
850892 |
822544 |
|
|
M_RO1 |
Desalination
plant south of the existing pier |
849395 |
828057 |
|
|
M _ RO2 |
Desalination
plant north of the existing pier |
849198 |
828290 |
|
|
M _ Marsh |
Discharge
point at the existing marsh |
850639 |
825810 |
|
|
M _ Coral |
Marine water
of Port Shelter |
851735 |
824279 |
|
|
M _ A |
Water
Control Station of Port Shelter |
849821 |
826997 |
|
|
M _ B |
Water
Control Station of Port Shelter |
852643 |
822470 |
|
|
Fresh
Water (6 stations) |
|
|
|
|
|
F_DA |
Upstream and
downstream of stream A |
850898 (DA) |
824510 (DA) |
pH,
temperature, DO, SS, turbidity, salinity, nitrate nitrogen (NO3-N),
nitrite nitrogen (NO2-N), ammonia nitrogen (NH3-N), total
phosphate (TP), Chlorophyll-a and specific pesticides. |
|
F_DB |
Upstream and
downstream of stream B |
851132 (DB) |
824196 (DB) |
|
|
F_DC |
Upstream and
downstream of stream C |
851515 (DC) |
823688 (DC) |
|
|
F _ Inland M |
Downstream of
the existing marsh (Inland) |
850434 |
825818 |
|
|
F _ lake 1D |
|
851450 |
824498 |
|
|
F _ Filter |
Filter
effluent point at Hole 5 |
- |
- |
|
Note: Monitoring location A (M_A) can make cross
reference to PM4 and Monitoring location B (M_B) can make cross reference to
PM9.
3.8.7
The
parameters to be monitored under the water quality monitoring programme shall include pH, temperature, DO, SS, turbidity,
salinity, nitrate nitrogen (NO3-N), nitrite nitrogen (NO2-N),
ammonia nitrogen (NH3-N), total phosphate (TP), Chlorophyll-a and
specific pesticides. The
typical types of pesticides to be applied at the golf course will be decided by
the Project Proponent before commencement of the golf course operation. Project Proponent shall update the
monitoring parameters, detection limits and analytical methods
accordingly. The ET Leader should
report and seek agreement from IC(E), ER and
3.8.8
Frequency of the water monitoring programme should be on bi-weekly basis and should cover the
effects of different tidal status (at least one for high tide and one for low
tide) for marine quality monitoring.
3.8.9
Other
relevant data including monitoring location/position, time, water depth,
temperature, weather conditions and any special phenomena or work underway at
the golf course shall also be recorded.
3.8.10
Additional
duplicate samples may be required by
3.8.11
The
post construction monitoring data for marine and stream water qualities shall
be used as the baseline values during the operation phase of the proposed third
golf course. Guideline value from
the existing golf course shall be used for the irrigation lake 1D and existing
reservoir during the first 6 months of operation phase as shown in the Table
3.6.
Table 3.6
Water Quality Monitoring Guideline
for proposed third golf course
(applicable to irrigation
lake 1D and existing reservoir)
|
Parameter (mg/L unless stated) |
Guideline
value |
|
pH |
6.0-9.0(1) |
|
Turbidity (NTU) |
- |
|
Dissolved Oxygen |
>4(1) |
|
Chlorophyll a
(mg/m³) |
<5(1) |
|
Nitrate N |
0.20(1) |
|
Nitrite N |
0.20(1) |
|
Ammoniacal N |
0.50(1) |
|
Total Kjeldahl N |
1.2(2) |
|
Total Phosphate |
0.1(1) |
|
Ortho Phosphate |
0.05(1) |
|
Conductivity
(µS/cm) |
<1000(1) |
Note: (1) These
values are based on professional judgement and
knowledge
(2) Based on 90th percentile of operational phase monitoring
data (1996 to June 1998)
3.9.1
The
Action and Limit levels for (i) irrigation lake 1D
and existing reservoir and (ii) marine and stream water qualities are shown in
Table 3.7 and Table 3.8 respectively. These criteria should be
applied to ensure that any deterioration of water quality is readily detected
and timely rectifying action is taken.
Table 3.7
Action and Limit Levels for Water Quality Monitoring
(applicable to irrigation lake 1D and existing
reservoir)
|
Parameter (mg/L unless stated) |
Action
and Limit Levels |
|
pH |
6.0-9.0(1) |
|
Turbidity (NTU) |
- |
|
Dissolved Oxygen |
>4(1) |
|
Chlorophyll a
(mg/m³) |
<5(1) |
|
Nitrate N |
0.20(1) |
|
Nitrite N |
0.20(1) |
|
Ammoniacal N |
0.50(1) |
|
Total Kjeldahl N |
1.2(2) |
|
Total Phosphate |
0.1(1) |
|
Ortho Phosphate |
0.05(1) |
|
Conductivity
(µS/cm) |
<1000(1) |
Note: (1) These
values are based on professional judgement and
knowledge
(2) Based on 90th percentile of operational phase monitoring
data (1996 to June 1998)
Table 3.8
Action and Limit Levels for Water Quality Monitoring
(applicable to stream and marine water qualities)
|
Parameters |
Action |
Limit |
|
DO in
mg L-1 (Surface,
Middle & Bottom) |
Marine
Water Surface and Middle 5 percentile of baseline
data for surface and middle layer Bottom 5 percentile of baseline
data for bottom layer |
Marine
Water Surface and Middle 1 percentile of baseline
data for surface and middle layer or 5 mg/L for FCZs Bottom 1 percentile of baseline
data for bottom layer or 2 mg/L for FCZs |
|
DO in
mg L-1 (mid-depth) |
Inland
Water 5 percentile of baseline
data |
Inland
Water 4 mg/L |
|
SS in
mg L-1 (depth-averaged) |
95 percentile of baseline
data |
99 percentile of baseline
data |
|
Turbidity
in NTU (depth-averaged) |
95 percentile of baseline
data |
99 percentile of baseline
data |
|
Salinity
in ppt (depth-averaged) |
95 percentile of baseline
data |
99 percentile of baseline
data |
|
Ammonia
Nitrogen (depth-averaged) |
95 percentile of baseline
data |
99 percentile of baseline
data |
|
Nitrate
Nitrogen (depth-averaged) |
95 percentile of baseline
data |
99 percentile of baseline
data |
|
Nitrite
Nitrogen (depth-averaged) |
95 percentile of baseline
data |
99 percentile of baseline
data |
|
|
95 percentile of baseline
data |
99 percentile of baseline
data |
|
Total
Phosphate in mgL-1 (depth-averaged) |
95 percentile of baseline
data |
99 percentile of baseline
data |
|
Pesticides
in µg/L-1 (depth-averaged) |
Level of detection limit |
Level of detection limit |
|
Chlorpyrifos* |
Level of detection limit |
Level of detection limit |
|
Imazaquin* |
Level of detection limit |
Level of detection limit |
|
Glyphosate* |
Level of detection limit |
Level of detection limit |
|
Oxadiazon* |
Level of detection limit |
Level of detection limit |
|
2,4-D/Mecoprop* |
Level of detection limit |
Level of detection limit |
|
Chlorothalonil* |
Level of detection limit |
Level of detection limit |
|
Mancozeb* |
Level of detection limit |
Level of detection limit |
|
Iprodione* |
Level of detection limit |
Level of detection limit |
|
Fosetyl Aluminum* |
Level of detection limit |
Level of detection limit |
|
Chlorpyrifos* |
Level of detection limit |
Level of detection limit |
Notes:
1. For
DO, non-compliance of the water quality limits occurs when monitoring result is
lower than the limits.
2. For
SS and turbidity, non-compliance of the water quality limits occurs when
monitoring result is higher than the limits.
3. All
figures given in the table are used for reference only and the
4. "Depth-averaged"
is calculated by taking the arithmetic means of reading of all three depths.
* Monitored
pesticides are subjected to change.
For any pesticides being monitored, the
3.9.2
Action
and limit levels for parameters sampled in the proposed lake, existing
reservoir, marine and stream water shall be reviewed after the first 6 months
of monitoring. Project proponent
shall liaise with
3.10.1
Should
monitoring results of the water quality parameters at any designated monitoring
station exceed the water quality criteria, action the proposed actions to be
taken shall be as follows:
§
inform Golf Course Manager immediately and stop
chemical application;
§
notify
§
review the application and re-evaluate suitably and
availability of alternatives to chemical controls, etc.;
§
agree remedial measures with Golf Course Manager and
inform
§
implement the agreed remedial measures immediately;
and
§
increase monitoring frequency and/or locations to
demonstrate effectiveness of the remedial measures.
4.1.1
The
EIA stipulated that EM&A for ecology should be undertaken throughout the
construction phase and during the early part of the operation phase of the
project to ensure that all mitigation measures are fully complied with. In particular, the objectives of the
design audit shall be to ensure that the design process clearly implements the
design for ecological mitigation specified in the EIA Report and to ensure that
such designs are ecologically feasible and effective. The construction and operational
EM&A objectives shall be to ensure that the ecological contract works and
construction mitigation procedures recommended are carried out as specified and
are effective. The construction and
operational phases EM&A will be carried out as part of the site audit programme.
4.1.2
As
stated in Annex 16 of the EIA-TM, the purpose of ecological monitoring of the
audit are:
§
to
monitor the effectiveness of the mitigation measures;
§
to
detect unpredicted ecological impacts arising from the proposed development;
§
to
verify the accuracy of the predictions of the ecological assessment study; and
§
to
recommend action plans in response to unpredicted impacts, and/ or failed
mitigation
4.1.3
In
general, the performance of monitoring and audit from an ecological prospective
will need to be integrated with the overall monitoring and audit plan for the
project as a whole. The
commencement and program of the engineering works would enable the ecological
monitoring program to be prepared based on seasonality factors.
4.2.1
Some
of the proposed works are located on or near sensitive ecological habitats
and/or rare or protected flora and fauna species which will need protection.
4.2.2
Design
for ecological mitigation specified in the EIA will be incorporated into the
final layout plan of the Project.
Ecological specifications including establishment of stream buffer zones
will be detailed as part of the final layout plan. The final ecological specifications and
designs shall be provided to the contractors.
4.2.3
Mitigation
measures required for the Project to minimise
ecological impacts and to preserve ecological resources will be recommended by
the EIA and specified in the Environmental Permit.
4.2.4
Ecological
mitigation measures to be implemented during the construction phase include the
following:
4.2.5
The
boundaries of the buffer zones for the natural stream courses will be
illustrated in the final layout plan.
The buffer zones will be demarcated prior to the commencement of any construction
works using flagging and signage to direct the fence installers where to
install the fence (Figure 4.1). The
buffer zones will be fenced using chain-link fence. There will be no encroachment within the
buffer zones. Special caution will
be paid at locations for crossings.
Buffer zone boundaries will be regularly checked to ensure works are not
exceeded and that no damage occurs to the buffer zones. Should buffer zones be encroached (even
only once), the fencing at and within
4.2.6
Some
sections of stream courses will be routed through culverts at locations of
crossings, or into constructed underground channels beneath the fairways. Prior to construction works, temporary
bypass channels or pipes will be provided to divert the flow at the sections of
natural stream courses to be culverted for crossings
or underground channels. The flow
will be restored to the original paths and the bypass channels or pipes will be
removed after the construction works are finished.
4.2.7
Water
quality in the natural stream courses and temporary bypass channels or pipes
must be protected from sedimentation and pollution by good site practices. Earthworks near natural stream courses
should be scheduled to avoid the wet season as far as possible, in particular
the period from May to June, which is the key breeding period for aquatic fauna
including shrimps.
4.2.8
Site runoff
should be directed towards regularly cleaned and maintained silt traps and
oil/grease separators to minimise the risk of
sedimentation and pollution of stream water. The silt and oil/grease separators
should be appropriately designed for the local drainage and ground conditions.
Temporary drainage systems would be established on different parts of the
construction areas in order to reduce the sedimentation of the stream courses.
4.2.9
Areas
of exposed soil should be minimised to reduce the
extent of soil erosion. Spoil heaps
should be covered at all times to minimise
erosion. Stockpiled materials shall
be stored down-gradient from any stream course or up-gradient with a suitably
constructed barrier to prevent loss of materials to the stream.
4.2.10
For
all haulage roads, temporary bridges shall be used to cross all preserved
streams and no contact shall be made with the preserved stream or its riparian
vegetation.
4.2.11
The
permanent bridges at Stream A and C would be supported by piers behind the stream
banks and would not encroach the stream beds or the stream banks.
4.2.12
79
coral colonies were found within the mapping area which covered the dredging
area for the desalination plant, all are common in
4.2.13
All
anchoring points/structures of the floating pier would be located on the shore
and/or at least
4.2.14
General
good site practice will also serve to minimise
ecological impacts and disturbance to wildlife.
·
All contractors must be notified that introduction of
dogs to the island is not allowed and the contractor will be held liable for
capture and removal of any dogs or other domestic animals introduced to the
island by any of the works personnel.
·
Equipment or stockpiles should be placed in works
areas only.
·
Access routes should be selected on works areas only
to minimise disturbance to natural habitats.
·
Construction activities should be restricted to works
areas that should be clearly demarcated.
·
General drainage arrangements should include sediment
and oil traps to collect and control construction site run-off.
·
Waste skips should be provided to collect general
refuse and construction wastes. The
wastes should be disposed of timely and properly off-site.
·
Open burning on works sites is illegal, and should be
strictly prohibited. Temporary fire fighting equipment should be provided in the work areas particularly near stream
buffer zones.
4.2.15
The
objective of compensatory planting is to mitigate for vegetation loss. As far as possible landscape and
compensatory planting should use native plants which bear flowers/fruits
attractive to wildlife. The ratio
of compensation should follow the mitigation measures specified in the EIA.
4.3.1
EM&A
for ecology would be undertaken throughout the construction and operational
phases of the project to ensure compliance with all mitigation measures. The construction and operation EM&A
objectives shall be to ensure that the ecological contract works and construction
mitigation procedures recommended are carried out as specified and are
effective. The construction and
operation phase EM&A will be carried out as part of the site audit programme.
4.3.2
As
stated in Section 5.5 of Annex 16 of the EIA-TM, the purposes of ecological
monitoring and audit programme are:
· to monitor the
effectiveness of the mitigation measures;
· to detect
unpredicted ecological impacts arising from the proposed development;
· to verify the
accuracy of the predictions of the ecological assessment study; and
· to recommend action
plans in response to unpredicted impacts, and/ or failed mitigation.
4.3.3
The
proper implementation of mitigation measures recommended in the EIA report
should be routinely audited during the construction and operational phases of
the project.
4.3.4
Construction
phase ecological EM&A will check the implementation of the ecological
mitigation measures and the ecology contract works, together with auditing the
effectiveness of mitigation.
4.3.5
Operation
phase EM&A will continue to audit the effectiveness of mitigation
measures. The operation phase
EM&A shall be undertaken during the Contractor’s one-year maintenance
period.
4.3.6
Ecological
monitoring and audit must be integrated with the overall EM&A plan for the
project as a whole. The program of
the engineering works would enable the ecological monitoring program to be
prepared with reference to seasonality, which might influence the frequency or
intensity of monitoring sessions.
For example, should the programme for
earthworks overlap part of a wet season, more frequent monitoring could be
warranted during that overlap period to ensure the effectiveness of stream
buffer zones.
4.3.7
The
ecological EM&A programme during construction and
operation will be implemented as set out in this manual. Three major components shall be included
and samples and measurements shall be taken as set out in the this manual.
Baseline Survey
4.3.8
Before
commencement of any works on site, or any setting out of works or storage
areas, the baseline surveys should be conducted. Baseline survey will consist of a
walk-over survey. Special attention
should be paid to ecologically sensitive streams to ensure minimum damage to
existing vegetation and streams. It
may be necessary to rope off and protect specific habitats (e.g. natural stream
courses) or species of special interest identified during the EIA study or during
the walk-over surveys. The purpose
of the baseline survey will be to confirm the pre-works ecological conditions,
with reference to the written descriptions and habitat maps included in the EIA
Report.
4.3.9
Prior
to the commencement of all construction works, a baseline survey of natural
corals would be conducted. At each
of the Site C, B2, Site D2 (on the bedrock
Construction and Operation Phase EM&A
4.3.10
The
implementation of mitigation measures and ecology contract works, the
Contractor’s compliance with the project’s environmental performance requirements,
and the effectiveness of site mitigation measures during both construction and
operation will be monitored and audited as detailed in the EP by the EM&A programme.
Detailed monitoring plans shall be developed and agreed prior to
commencement of construction works.
4.3.11
The
ecological monitoring and auditing will be conducted by a qualified
ecologist(s) who has a suitable background in natural history and a
professional qualification in ecology or botany, and to be approved by
AFCD. The mitigation measures shall
be audited as part of the site audit programme.
Table 4.1
Monitoring and
Audit during the Construction Phase and the Mitigation Measures
|
Monitoring
parameter |
Frequency/Duration
and/or responses |
|
Checking the intactness
of buffer zones for streams Monitoring the
compliance of operators in protecting demarcated areas. Checking for
other unauthorised clearing, trampling etc. Checking the site
for introduced dogs or other domestic animals |
Once per week during
construction phase. Any encroachment
onto the stream buffer zones will be promptly reported to the ER/ET and
corrective measures will be implemented immediately. Unauthorized
encroachment onto natural vegetation will be promptly reported to the
ET/ER. Affected soils or other
substrates will promptly be restored to pre-disturbance contours and hydroseeded.
If shrubs or trees are damaged, native shrubs and/or trees will be
replanted to compensate for losses.
Introduced dogs
or other domestic animals will be immediately removed from the island or
surrendered to the golf course superintendent for subsequent transfer to AFCD
personnel. |
|
Checking the
conditions of the water in the streams, temporary bypass channels or pipes,
and construction sites for all stream crossings. |
Contractor shall
inspect all construction sites for potential erosion, sedimentation, and
visible pollution (i.e. hydrocarbon sheen) in streams/channels once a week
and after Amber, Red or Black Rain Storm event, Cyclone and Typhoon Warnings
as announced by the Hong Kong Observatory. Additional
measures to prevent erosion and run off by contractor before the onset of
rainfall include installation of additional sediment traps at appropriate
locations by contractor as determined by the ET/ER. When hydrocarbon
pollution is detected, the source should be discovered and removed. Visual inspection should be undertaken
daily for 3 days or until the visible sheen is not present at the affected
stream. Besides the
regular water quality monitoring for stream courses (at mid-water depth at
both the upstream and downstream locations of Stream A, B & C, at least
once a week upon the completion of all construction activities, see Water
Quality section of this manual), stream crossings and related temporary
bypass channels or pipes shall be inspected weekly to ensure stream banks are
protected from disturbance and streams are protected from sedimentation. |
|
Monitoring
aquatic fauna |
Streams B, C, and
D will be monitored monthly during the construction phase to determine the
status of Caridina trifasciata
(shrimp) and Nanhaipotamon hongkongensis (freshwater crab). Stream condition will be recorded with
reference to the protective buffer zone.
Encroachment onto the buffer zone will be reported to the ER/ET. Sheet piling will be installed at the
buffer zone perimeter as needed to prevent further encroachment. Stream sedimentation will be reported
to the ER/ET, the agent causing sedimentation will be discovered, and
sedimentation will be stopped. |
|
Fuel or chemical spill. |
Immediate bunding of spill by Contractor. Ensure remedial measures (including. cleanup of the spill, inspection
of other chemical storage sites, and review of the handling procedures for
chemicals) properly implemented. Monitoring of spill and drainage channel/ waterway (if present) for
contaminants. Daily for five days
after incidents. Assessment of the spill and further action as determined by the ER/ET. |
|
Stream
buffer zones Temporary
bypass channels or pipes New constructed underground channels |
Audit compliance once at the end of the
contract. |
|
Transplanted
corals |
The transplanted coral
colonies will be regularly checked by qualified marine ecologist(s) to be
approved by AFCD quarterly for 1 year after transplantation. The presence, survival, and health
conditions of the transplanted coral colonies will be recorded by the number
on the plastic tags. The general
conditions of the transplantation sites will also be reported. |
|
Natural corals |
All coral
monitoring works should be conducted by experienced marine ecologist(s) to be
approved by Impact monitoring
frequencies would be changed at different stages. For the natural colonies at Site D2
(on the bedrock) and the Control Site, monitoring will be conducted weekly at
the first two weeks of dredging works for the desalination plant pipelines. If no exceedance was recorded, the monitoring schedule would be
changed to biweekly till the pipeline construction works are finished. The presence, survival, and health
conditions of the coral colonies will be recorded. For the natural colonies at Site C, B2
and the Control Site, monitoring will be conducted monthly for the first
three months of the construction phase. If no exceedance
was recorded, the monitoring schedule would be changed to quarterly during
the rest of the construction phase.
For each monitored coral colony, the percent of sediment coverage, the
colour and the thickness of the sediment, the bleaching effect and live/dead
ratio (the health status of coral colony) shall be recorded. The action and limit level for the
monitoring and the Event Action Plan are provided in Table 4.3 below. |
|
Seagrass |
Seagrasses at Site D3, and
at Site D2 (if seagrasses was found at Site D2
during the baseline monitoring), would be monitored in conjunction with the
coral monitoring at Site D2 (natural corals on bedrock). The construction phase monitoring
schedule would be the same as for coral monitoring at Site D2, weekly during
the first two weeks of dredging works, and then biweekly till the pipeline
construction works are finished.
The extent of the seagrass beds, the
coverage percentage and health conditions of seagrasses
will be recorded. As the natural coral colonies to be monitored at Site D2,
which will have an Event Action Plan as present in the EM&A Manual, would
be closer to the desalination than the seagrass
beds, no action and limit level for seagrasses
would be required. |
Table 4.2
Monitoring and
Audit during the Operation Phase and the Mitigation Measures
|
Monitoring
parameter |
Frequency/Duration
and/or responses |
|
Natural corals |
Monitoring of the
natural colonies at Site C, Site D2 (on the bedrock |
|
Seagrass |
During operation
phase, the seagrass monitoring would be conducted
in conjunction with the coral monitoring at Site D2 (natural corals on
bedrock). Seagrasses
at Site D3, and at Site D2 (if seagrasses was found
at Site D2 during the baseline monitoring), would be monitored during the
first two years of the operation phase. The monitoring schedule during the
first three months would be monthly.
After that, the monitoring schedule would be changed to semi-annually,
i.e. once in dry season and once in wet season. The extent of the seagrass beds, the coverage percentage and health
conditions of seagrasses will be recorded. As the
natural coral colonies to be monitored at Site D2, which will have an Event
Action Plan as present in the EM&A Manual, would be closer to the
desalination than the seagrass beds, no action and
limit level for seagrasses would be required. The
need of any further monitoring will be reviewed according to the monitoring
results after the second year monitoring. |
Table
4.3 Action and Limit level and Event Action Plan for natural corals monitoring
|
-
Parameters |
-
Action Level |
-
Limit Level |
|
-
Sedimentation |
-
a 15% increase in the
percentage of sedimentation on the hard corals occurs at more than 20% of the
tagged coral colonies at one or more monitoring sites |
-
a 25% increase in
the percentage of sedimentation on the hard corals occurs at more than 20% of
the tagged coral colonies at one or more monitoring sites |
|
-
Bleaching |
-
a 15% increase in
the percentage of bleaching of hard corals occurs at more than 20% of the
tagged coral colonies at one or more monitoring sites |
-
a 25% increase in
the percentage of bleaching of hard corals occurs at more than 20% of the
tagged coral colonies at one or more monitoring sites |
|
-
Mortality |
-
a 15% increase in
the percentage of partial mortality of corals occurs at more than 20% of the
tagged coral colonies at one or more monitoring sites |
-
a 25% increase in
the percentage of partial mortality of corals occurs at more than 20% of the
tagged coral colonies at one or more monitoring sites |
|
Action |
Action Level |
Limit Level |
|
Construction phase |
If the Action Level is exceeded the ET Leader should inform
all parties (Contractor, Project Proponent, |
If the Limit Level is exceeded the ET Leader should inform
all parties (Contractor, Project Proponent, |
|
Operation phase |
If the Action Level is exceeded the ET Leader should inform
Golf Course Operator, |
If the Limit Level is exceeded the ET Leader should inform
all parties Golf Course Operator, |
5.1.1
Waste
management would be the Contractor’s responsibility to ensure that all wastes produced
during the construction works for Project are handled, stored and disposed of
in accordance with good waste management practices and
5.1.2
Waste materials
generated during construction activities, such as construction and demolition
(C&D) materials and general refuse, are recommended to be audited at
regular intervals (at least quarterly) to ensure that proper storage,
transportation and disposal practices are being implemented. This monitoring of waste management
practices would ensure that these solid wastes generated during construction
are not disposed of in nearby streams or other parts of the Project. The audits shall also check that any chemical
wastes generated during maintenance of construction equipment and vehicles are
not stored within the sites of the Project. The Contractor would be responsible for
the implementation of any mitigation measures to minimise
waste and redress problems arising from the waste materials.
5.2.1
Mitigation
measures for waste management for Project are summarised
below. With the appropriate
handling, storage and removal of waste arisings
during the construction works as defined below, the potential to cause adverse
environmental impacts would be minimised. During the site inspections, the ET
shall pay special attention to the issues relating to waste management and
check whether the Contractor has implemented the recommended good site
practices and other mitigation measures.
5.2.2
Provided
that good site practices are followed strictly, adverse impacts from waste
management are not expected to arise.
Recommendations for good site practices during construction activities
include:
u
nomination
of approved personnel, such as a site manager, to be responsible for good site
practices and making arrangements for collection of all wastes generated at the
site and effective disposal to an appropriate facility;
u
training
of site personnel in proper waste management and chemical waste handling
procedures;
u
provision
of sufficient waste disposal points and regular collection for disposal;
u
appropriate
measures to minimise windblown litter and dust during
transportation of waste by either covering trucks or by transporting wastes in
enclosed containers;
u
regular
cleaning and maintenance programme for drainage
systems, sumps and oil interceptors;
u
a
Waste Management Plan should be prepared and submitted to the Engineer for approval. One may make reference to ETWB TCW
No.15/2003 for details; and
u
a recording system for the amount of
waste generated, recycled and disposed (including the disposal sites) should be
proposed.
5.2.3
In
order to monitor the disposal of C&D material at public filling areas and
to control fly tipping, a trip-ticket system should be included as one of the
contractual requirements to be implemented by the ET undertaking the EM&A
work. One may make reference to
ETWB TCW No. 31/2004 for details.
The roles of the IC(E) are also detailed in this technical circular.
5.2.4
Good
management and control can prevent the generation of significant amounts 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:
u
segregation
and storage of different types of waste in different containers, skips or
stockpiles to enhance reuse or recycling of materials and their proper
disposal;
u
separate
labelled bins shall be provided to segregate aluminium cans from other general refuse generated by the
work force, and to encourage collection of by individual collectors;
u
any
unused chemicals or those with remaining functional capacity shall be recycled;
u
maximising the use of reusable steel formwork to reduce the
amount of C&D material;
u
proper
storage and site practices to minimise the potential
for damage or contamination of construction materials; and
u
plan
and stock construction materials carefully to minimise
amount of waste generated and avoid unnecessary generation of waste.
5.2.5
In
addition to the above good site practices and waste reduction measures,
specific mitigation measures for identified waste which may arise are
recommended below to minimise environmental impacts
during handling, transportation and disposal of these wastes.
5.2.6
To minimise impact from collection and transportation of
C&D material for off-site disposal, the excavated soft spoil from the
Project should be reused on-site as backfill material as far as
practicable. Suitable areas should
be designated within the works site boundaries for temporary stockpiling of C&D
material. Within stockpile areas,
the following measures should be taken to control potential environmental
impacts or nuisance:
u
covering
material during heavy rainfall;
u
locating
stockpiles to minimise potential visual impacts; and
u
minimizing
land take of stockpile areas as far as possible.
5.2.7
When
disposing of C&D material at a public filling area, it shall be noted that
the material shall only consist of soil, rock, concrete, brick, cement
plaster/mortar, inert building debris, aggregates and asphalt. The material shall be free from marine
mud, household refuse, plastic, metals, industrial and chemical waste, animal
and vegetable matter, and other material considered to be unsuitable by the
Filling Supervisor at the public filling area.
5.2.8
If
chemical wastes are produced at the construction site, the Contractor would be
required to register with the
5.2.9
General
refuse should be stored in enclosed bins or compaction units separate from
C&D material. A reputable waste
collector should be employed by the contractor to remove general refuse,
separately from C&D material, from the site.
6.1.1
The archeological
impact assessment conducted in the EIA concluded that some potential for
archaeological material remains at the Wan Chai
Archaeological Site and a watching brief is recommended during the construction
phase. A
watching brief is a process whereby a qualified and licensed archaeologist
monitors the excavation works during the construction phase in areas identified
(and agreed with the Antiquities and Monuments Office (AMO)) to be of
archaeological potential. The
watching brief methodology is set out below. The archaeologist conducting the
watching brief should obtain a licence prior to
commencement of works as stipulated in Section 12 of the Antiquities and
Monuments Ordinance (Cap. 53). The
granting of the licence may take up to 8 weeks after
the submission of the licence to the Antiquity
Authority.
6.1.2
The built heritage impact conducted for the EIA has
identified that the impacts to several graves can be mitigated with the
implementation of buffer zone and preservation by record. The northern coastal
section of the Kap Lo Kok
Study Area of the proposed golf course extension is currently very heavily
overgrown and parts of it were not accessible during the field survey. The area
has the potential to contain as of yet unidentified historical graves and it is
recommended that during the construction phase, that if during the course of
works a grave is found that the AMO is contacted immediately and that works
stop in the immediate vicinity of the grave
until it can be inspected by AMO staff.
Wan
Chai Archaeological Site
6.2.1
A watching brief should be undertaken by a qualified
and licenced archaeologist during excavation works at
the construction phase in the identified area marked on Figure 7.1. A qualified archaeologist should inspect
the site at an interval of not less than once a month when there is excavation
work on site. A construction programme should be provided to the archaeologist so that
an inspection schedule can be arranged.
The archaeologist should be notified no less then 2 working days prior
to any changes on the commencement of the excavation works so arrangements can
be made to monitor the works. The
ET and IC(E) should facilitate arrangements and liaise between the
archaeologist and construction contractor.
6.2.2
Monitoring is a form of mitigation which is required
when engineering works impact on areas that have been assessed as having
archaeological potential and where conventional testing methods are deemed
insufficient. The range of archaeological
resources that require monitoring include both historical and prehistoric
material and features.
6.2.3
The watching brief process entails the observation
of the engineering works by qualified archaeologists in order to identify any
archaeological material or features revealed during the excavation phase of the
works schedule. Upon identification
of such material or features the archaeologists will require immediate access
to the excavation area for recording of the material/features in situ, antiquities retrieval and
sample collection.
6.2.4
These guidelines serve two basic purposes: firstly,
that the archaeological resources are adequately recorded and recovered and
secondly and, secondly, that appropriate measures are taken on site to minimize
delays to the engineering works schedule.
Methodology of
the Watching Brief
Monitoring personnel
6.2.5
Watching brief should be undertaken by a qualified
archaeologist, who must apply for a licence under the
Antiquities and Monuments Ordinance (Cap. 53) from the Antiquity Authority
before the monitoring works commence.
Areas to be monitored
6.2.6
The areas which require watching brief shall be
defined to be submitted by the qualified archaeologist under the project and
agreed with AMO prior to commencement of works.
Site access
6.2.7
Archaeologists should be allowed reasonable access
to relevant areas of groundworks, so that deposits
can be examined and recorded.
Trenches may require temporary shoring and groundworks
might need to be temporarily rescheduled, to provide a safe environment for
such works. Provision should be
made, at the earliest stage of construction programming, for unrestricted
archaeological access to areas of groundworks in the
identified area of archaeological potential (Figure 6.1).
Monitoring and retrieval methodology
6.2.8
Table 6.1, below, shows the various categories of
archaeological material and features that are most likely to occur in local
contexts. Also listed are the
recommended type and degree of recording and retrieval required for each
category. Upon discovery of any
archaeological materials and features, the archaeologist shall report to the
AMO immediately.
Recording
forms for watching brief
6.2.9
A set of forms for the recording of any archaeological
material identified during the watching brief process must be approved by the
AMO. They should include the
following:
l Registers to
record the finds, special finds, contexts, photographs, drawings, levels and
samples
l Context
description forms
l A daily record
form designed specifically for archaeological watching brief. This form must locate clearly the area
of works monitored, the nature and extent of the works, summaries of the days
findings and cross reference to all register numbers used that day.
Safety requirements
6.2.10
Archaeologists and staff employed in monitoring must
follow the safety procedures enforced by the contractors on site.
Mitigation measures
6.2.11
The project proponent should allow a flexibility to
undertake the contingency arrangements.
Should significant archaeological materials be discovered, appropriate
mitigation measures will be designed and implemented by the project proponent.
Progress Report
6.2.12
The archaeologist should keep the AMO informed of
the progress of watching brief. The
archaeologist should submit progress reports every 3 months during the programme of the watching brief.
Watching brief report
6.2.13
The procedures and result of the Watching Brief
should be presented in report form, following standards set by the AMO for
reports on other types of archaeological field work. This includes details of the overall programme, methodology, sampling strategy, implementation,
findings and interpretation. All
data, material and records forming the site archive must be submitted to the
AMO upon completion of the project.
6.2.14
The monitoring report should contain, as a minimum,
the following elements:
l
Non-technical summary
l
Site location (including maps and relevant drawings)
and descriptions
l
Context of the project
l
Geological and topographical background
l
Archaeological and historical background
l
General and specific aims of field works monitoring
l
Reference to relevant legislation
l
Field methodology
l
Collection and disposal strategy for artefacts and ecofacts
l
Arrangement for immediate conservation of artefacts
l
Publication and dissemination proposals
l
Archive deposition
l
Timetable
l
Contingency arrangement (if appropriate)
Table 6.1
Categories of Archaeological Finds and Recommended Action
|
Categories
of Archaeological Material |