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Proposed Comprehensive Development at Wo Shang Wai Yuen Long |
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Certification by Environmental Team Leader and Verification
by Independent Environmental Checker |
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Contents |
Chapter Title Page
Tables
Figures
Figure 1.1 General
Layout Plan of the Project Site
Figure 2.1 Locations
of Air Quality Monitoring Stations
Figure 2.2 Locations
of Noise Monitoring Stations
Figure 2.3 Locations
of Water Quality Monitoring Stations
Figure 4.1 Survey
Area and Transect Walked
Appendices
Appendix A Project
Organization Chart
Appendix B Tentative
Construction Programme
Appendix C Action
and Limit Levels for Construction Phase
Appendix D Event
and Action Plan for Air Quality, Noise and Water Quality
Appendix E Calibration
Certificates
Appendix F Graphical
Plots of the Monitoring Results
Appendix G Weather
Conditions during the Monitoring Period
Appendix H Ecological
Monitoring Conducted
Appendix I Summary
of Bird Surveys Conducted
Appendix J Summary
of Herpetofauna, Mammal and Insect Surveys Conducted
Appendix K Summary
of Monitoring of Water Quality associated with Ecological Monitoring Conducted
Appendix L Environmental
Mitigation Measures - Implementation Status
Appendix M Landscape
and Visual Audit Photos
Mott
MacDonald Hong Kong Ltd. (“MMHK”) has been commissioned by Heng Shung
Construction Co. Ltd. to undertake the Environmental Team (ET) services to
carry out environmental monitoring and audit (EM&A) for both
pre-construction and construction phases of the Proposed Comprehensive Development
at Wo Shang Wai, Yuen Long.
This
is the 67th EM&A report submitted under the Condition 4.5 of
Environmental Permit No. EP-311/2008/D. This report summarises the findings on
EM&A during the period from 1 to 30 November 2015.
Exceedance of Action and Limit Levels
There
was no breach of Action or Limit levels for Air Quality (1-hr TSP and 24-hr
TSP) and Noise level (as Leq) in the reporting month.
During November 2015, a total of ten Action
Level exceedances for Water Quality were observed. Ten Action Level exceedances
of pH were observed at MP3, no exceedances were observed at MP4, MP5 and MP6.
The summary of
measured water quality is presented in Section
3.2.3.
Investigations have been carried out
to identify the causes of exceedance. From investigation, the Contractor has
implemented water quality mitigation measures as recommended in the EIA report.
With external factors affecting the adjacent environments, such as pond fish
culture activities, therefore all the recorded exceedances in Water Quality
were considered not due to the project construction works.
Implementation of Mitigation Measures
Site
audits were carried out on 3, 10, 19 and 24 November 2015
to confirm the implementation measures undertaken by the Contractor in
the reporting month. The outcomes are presented in Section 6 and the status of implementation of mitigation measures
in the site is shown in Appendix L.
Record of
Complaints
There was no new record of complaints received in the reporting
month.
In March 2005, the Project Proponent, Profit Point Enterprises Limited, acquired the development site at Wo Shang Wai in Yuen Long. An Environmental Impact Assessment (EIA) was then carried out and approved under the EIA Ordinance (EIAO), and the Environmental Permit (EP-311/2008) for construction of the comprehensive development in Wo Shang Wai was first granted by EPD on 9 September 2008 and has been subsequently varied, with the current version (EP-311/2008/D) issued by EPD on 20 March 2013.
The
Project involves the residential development and associated
infrastructure and wetland restoration area and linear
landscape area. The construction works under the Environmental Permit commenced
on 12 May 2010. The site formation construction works of the Wetland Restoration Area (hereafter WRA) were completed on 15
November 2010, while the 30-month establishment period of the WRA was concluded
in August 2012 – this indicated that planting works as scheduled in the
approved Wetland Restoration and Creation Scheme (WRCS; Nov 2009) was complete,
except along the western and southern boundary where the planting is affected
by the existing site boundary and noise barrier, and for which a Variation to
Environmental Permit (EP-311/2008/C) to defer planting at the location was
approved. The current valid EP (EP-311/2008/D) includes specific mitigation
measures to minimise certain identified noise impacts during the operation
phase.
Mott MacDonald Hong Kong Ltd. (“MMHK”) has been commissioned by the Contractor, Heng Shung Construction Co. Ltd., to undertake the Environmental Team (ET) services to carry out environmental monitoring and audit (EM&A) for both pre-construction and construction phases of the Proposed Comprehensive Development at Wo Shang Wai, Yuen Long.
According to the EP Condition 4.5, the monthly EM&A Report shall be submitted to the Director within two weeks after the end of the reporting month. This report summarises the findings during the period from 1 to 30 November 2015.
The organisation chart
and lines of communication with respect to the on-site environmental management
structure together with the contact information of the key personnel are shown
in Appendix A.
During the
reporting month, construction works of the Project undertaken include:
¡ Site formation
¡ Pond drainage management in the Wetland
Restoration Area (to lower the water level and remove unwanted species in the
pond)
The Construction
Works Programme of the Project is provided in Appendix
B. The general layout plan of the Project site is
shown in Figure 1.1.
The EM&A programme requires environmental monitoring of air quality, noise, water quality, ecology and landscape and visual as specified in the approved EM&A Manual.
A summary of impact EM&A requirements is presented in Table 1.1 below:
Table 1.1: Summary of Impact EM&A Requirements
|
Parameters |
Descriptions |
Locations |
Frequencies |
|
Air Quality |
24-Hour TSP |
ASR1, ASR2A, ASR3, ASR4 |
Once every 6 days |
|
1-Hour TSP |
ASR1, ASR2A, ASR3, ASR4 |
3 times every 6 days |
|
|
Noise |
Leq, 30min |
NSR1, NSR3, NSR5, NSR7 |
Weekly |
|
Water Quality |
Dissolved Oxygen (DO), temperature, pH, suspended solids (SS) and Biological Oxygen Demand (BOD) |
MP1 to MP6 |
3 days per week |
|
Ecology |
Birds |
Within the Project Area and Assessment Area of 500m |
Weekly |
|
Dragonflies and Butterflies |
Within the Project Area and Assessment Area of 500m |
Once per month during Mar and Sep to November, and twice per month during Apr to Aug |
|
|
Herpetofauna |
Within the Project Area and Assessment Area of 500m |
Once per month during Apr to Nov |
|
|
Water quality of Wetland Restoration Area (WRA) |
WRA |
After filling of WRA with water, monthly for in situ water quality and every size months (end of wet season and end of dry season) for laboratory testing |
|
|
Site Inspections |
Within the Project Area and Assessment Area of 500m |
Weekly |
|
|
Landscape and Visual |
Auditing of protection of existing trees, the transplanting of
existing trees, the creation of new wetland, the planting of new trees and
shrubs and other landscape and visual mitigation measures |
CM1 to CM10 and OM1 to OM7
within the Project Area |
Site inspections once every two weeks during construction phase; once
every two months during operational phase |
The Environmental Quality Performance Limits for air quality, noise and water quality are shown in Appendix C.
The Event and Action Plan for air quality, noise and water quality are shown in Appendix D.
The monitoring schedule for the reporting month is shown in Table 1.2 below.
Table 1.2: Environmental Monitoring and Audit Schedule for the Reporting Month
For air quality, construction noise and water quality, ecology, landscape and visual monitoring methodology, including the monitoring locations, monitoring equipment used, monitoring parameters, and frequency and duration, etc, are detailed in this Chapter.
In accordance with the EM&A Manual, 1-hour and 24-hour TSP levels monitoring are to be conducted during the construction phase. Table 2.1 summarizes the monitoring parameters, frequency and duration of air quality monitoring.
Table 2.1: Air Quality Monitoring Parameters, Frequency and Duration
|
Parameter |
Frequency and Duration |
|
|
ASR1, ASR2A, ASR3 & ASR4 |
24-hour TSP |
At least once in
every six-days |
|
1-hour TSP |
3 times every
six-days |
The four air quality monitoring stations were established in the EM&A manual and were slightly adjusted during the baseline monitoring phase. Locations of the agreed air quality monitoring stations are listed in Table 2.2 and as shown in Figure 2.1.
Table 2.2: Air Monitoring Stations
|
Monitoring Stations |
Locations |
|
ASR1 |
Works Site
Boundary |
|
ASR2A |
At the rooftop of
refuse collection point, which is located at the southwest of the project
area |
|
ASR3 |
At the commercial
centre at Palm Springs, which is located at the south of the project area |
|
ASR4 |
Works Site
Boundary |
Continuous 24-hour TSP air quality monitoring is conducted using High Volume Sampler (HVS) (Model: GMWS-2310 Accu-vol). The HVS meets all the requirements of the EM&A Manual. Portable direct reading dust meters were used to carry out the 1-hour TSP monitoring. Table 2.3 summarizes the equipment used in the impact air quality monitoring.
Table 2.3: TSP Monitoring Equipment
|
Equipment |
Model |
|
24-hr TSP
monitoring |
|
|
High Volume
Sampler |
GMWS 2310
Accu-vol |
|
Calibrator |
GMW 25 |
|
1-hr TSP monitoring |
|
|
Portable direct
reading dust meter |
AM510 SidePak
Personal Aerosol Monitor Dust Trak 8520 |
Installation
The HVS was installed in the vicinity of the air sensitive receiver. The following criteria were considered in the installation of the HVS.
¡ A horizontal platform with appropriate support to secure the sampler against gusty wind was provided.
¡ The distance between the HVS and any obstacles, such as buildings, was at least twice the height that the obstacle protrudes above the HVS.
¡ A minimum of two metres separation from walls, parapets and penthouse was required for rooftop sampler.
¡ A minimum of two metres separation from any supporting structure, measured horizontally was required.
¡ No furnace or incinerator flues or building vent were nearby.
¡ Airflow around the sampler was unrestricted.
¡ The sampler has been more than 20 metres from any drip line.
¡ Permission was obtained to set up the samplers and to obtain access to the monitoring stations.
¡ A secured supply of electricity is needed to operate the samplers.
Preparation of Filter Papers
¡ Glass fibre filters were labelled and sufficient filters that were clean and without pinholes were selected.
¡ All filters were equilibrated in the conditioning environment for 24 hours before weighing. The conditioning environment temperature was around 25 °C and not variable by more than ±3 °C with relative humidity (RH) < 50% and was not variable by more than ±5%. A convenient working RH was 40%.
Field Monitoring
¡ The power supply was checked to ensure the HVS works properly.
¡ The filter holder and the area surrounding the filter were cleaned.
¡ The filter holder was removed by loosening the four bolts and a new filter, with stamped number upward, on a supporting screen was aligned carefully.
¡ The filter was properly aligned on the screen so that the gasket formed an airtight seal on the outer edges of the filter.
¡ The swing bolts were fastened to hold the filter holder down to the frame. The pressure applied should be sufficient to avoid air leakage at the edges.
¡ The shelter lid was closed and was secured with the aluminium strip.
¡ The HVS was warmed-up for about 5 minutes to establish run-temperature conditions.
¡ A new flow rate record sheet was set into the flow recorder.
¡ The flow rate of the HVS was checked and adjusted at around 1.1 m3/min. The range specified in the EM&A Manual was between 0.6-1.7 m3/min.
¡ The programmable timer was set for a sampling period of 24 hrs + 1 hr, and the starting time, weather condition and the filter number were recorded.
¡ The initial elapsed time was recorded.
¡ At the end of sampling, the sampled filter was removed carefully and folded in half length so that only surfaces with collected particulate matter were in contact.
¡ It was then placed in a clean plastic envelope and sealed.
¡ All monitoring information was recorded on a standard data sheet.
¡ Filters were sent to a HOKLAS accredited laboratory for analysis.
Maintenance and Calibration
¡ The HVS and its accessories are maintained in good working condition, such as replacing motor brushes routinely and checking electrical wiring to ensure a continuous power supply.
¡ HVSs were calibrated at two-month intervals.
¡ Calibration records for HVSs are shown in Appendix E.
Field Monitoring
The measuring procedures of the 1-hour dust meter are in accordance with the Manufacturer’s Instruction Manual as follows:
¡ Set POWER to “ON”, push BATTERY button, make sure that the meter’s indicator is in the range with a red line and allow the instrument to stand for about 3 minutes (Then, the air sampling inlet has been capped).
¡ Push the knob at MEASURE position.
¡ Push “O-ADJ” button. (Then meter’s indication is 0).
¡ Push the knob at SENSI ADJ position and set the meter’s indication to S value described on the Test Report using the trimmer for SENSI ADJ.
¡ Pull out the knob and return it to MEASURE position.
¡ Push “START” button.
Maintenance and Calibration
¡ The 1-hour dust meter would be checked at 3-month intervals and calibrated at 1-year intervals throughout all stages of the air quality monitoring.
¡ Calibration records for direct dust meters are shown in Appendix E.
Following the requirements in the EM&A Manual for noise, noise monitoring has to be carried out during the construction phase. Continuous noise monitoring for the A-weighted levels Leq, L10 and L90 is undertaken once per every week.
Table 2.4 summarizes the monitoring parameters, frequency and duration of air quality monitoring.
Table 2.4: Noise Monitoring Parameters, Frequency and Duration
|
Monitoring Stations |
Parameter |
Frequency and Duration |
|
NSR1, NSR3, NSR5, NSR7 |
Leq, L90 & L10 |
Once every week |
The four noise quality monitoring stations were established in the EM&A manual and were slightly adjusted during the baseline monitoring phase. Locations of the agreed noise quality monitoring stations are listed in Table 2.5 and as shown in Figure 2.2.
Table 2.5: Noise Monitoring Stations
|
Monitoring Stations |
Locations |
Type of measurement |
|
NSR1 |
Noise monitoring
equipment was set up near the boundary wall at Palm Springs. |
Free-field |
|
NSR3 |
The monitoring
station was located next to the guard house at Palm Springs. |
Facade |
|
NSR5 |
The monitoring
station was located within the work site boundary. |
Free-field |
|
NSR7 |
The monitoring
station was located near the boundary wall of the house of Mai Po San Tsuen. |
Free-field |
Integrating Sound Level Meter will be used for noise monitoring. It is a Type 1 sound level meter capable of giving a continuous readout of the noise level readings including equivalent continuous sound pressure level (Leq) and percentile sound pressure level (Lx). They comply with International Electrotechnical Commission Publications 651:1979 (Type 1) and 804:1985 (Type 1). Table 2.6 summarizes the noise monitoring equipment model being used.
Table 2.6: Noise Monitoring Equipment
|
Equipment |
Model |
|
Integrating Sound Level Meter |
Rion NL-52 |
|
Calibrator |
Rion NC-73 |
Field Monitoring
¡ The Sound Level Meter was set on a tripod at a height of at least 1.2 m above the ground.
¡ Façade and free-field measurements were made at the monitoring locations.
¡ The battery condition was checked to ensure the correct functioning of the meter.
¡ Parameters such as frequency weighting, the time weighting and the measurement time were set as follows:
– frequency weighting: A
– time weighting: Fast
– time measurement: 30 minutes intervals (between 07:00 and 19:00)
¡ Prior to and after each noise measurement, the meter was calibrated using a Calibrator for 94 dB at 1 kHz. If the difference in the calibration level before and after measurement was more than 1 dB, the measurement would be considered invalid has to be repeated after re-calibration or repair of the equipment.
¡ During the monitoring period, the Leq, L10 and L90 were recorded. In addition, any site observations and noise sources were recorded on a standard record sheet.
Maintenance and Calibration
¡ The microphone head of the sound level meter and calibrator is cleaned with soft cloth at quarterly intervals.
¡ The meter and calibrator are sent to the supplier or HOKLAS laboratory to check and calibrate at yearly intervals.
¡ Calibration records are shown in Appendix E.
In accordance with the requirements in the EM&A Manual for water quality, water quality parameters including Dissolved Oxygen (DO), temperature, pH, turbidity, suspended solids (SS) and Biochemical Oxygen Demand (BOD) have to be monitored at designated monitoring stations during construction of the Project. DO, temperature and pH were measured in-situ whereas SS and BOD were analysed in a laboratory. The measurements should be taken at all designated monitoring stations, three days per week. The interval between any two sets of monitoring was not less than 36 hours. Table 2.7 summarizes the monitoring parameters, frequency and duration of water quality monitoring.
Table 2.7: Water Quality Monitoring Parameters, Frequency and Duration
|
Monitoring Stations |
Parameter |
Frequency and Duration |
|
MP1, MP2, MP3, MP4, MP5 & MP6 |
DO, temperature, pH, SS, turbidity, BOD |
Three days every week |
The six water quality monitoring stations were established in the EM&A manual. Locations of the agreed water quality monitoring stations are listed in Table 2.8 and as shown in Figure 2.3.
Table 2.8: Water Quality Monitoring Stations
|
Monitoring Stations |
Easting |
Northing |
|
MP1 |
838 730.50 |
822 862.25 |
|
MP2 |
838 933.26 |
823 247.41 |
|
MP3 |
839 107.17 |
823 596.84 |
|
MP4 |
839 286.14 |
823 638.55 |
|
MP5 |
839 134.35 |
823 722.99 |
|
MP6 |
839 063.02 |
823 842.25 |
The Water Quality Monitoring Equipment and Analytical Methods applied to Water Quality Samples are given in Table 2.9 and Table 2.10 respectively. Details of which are discussed below.
Table 2.9: Water Quality Monitoring Equipment
|
Equipment |
Model |
Equipment/Serial Number |
|
Conductivity, Dissolved oxygen, pH, Salinity and
Temperature Measuring Meter |
YSI Professional Plus |
10D101565 |
|
Turbidity Meter |
Hach 2100Q |
13120C004242 |
|
Global Positioning System (GPS) |
Garmin
eTrex Vista |
ENO 007 |
Table 2.10: Analytical Methods applied to Water Quality Samples
|
Determinant, unit |
Standard Method |
|
Total Suspended Solids, mg/L |
In house method based on APHA 2540D; ALS Method
Code: EA-025 |
|
Biochemical Oxygen Demand (BOD), mg/L |
In house method based on APHA 5210B; ALS Method
Code: EP-030 |
All in-situ monitoring instruments were checked, calibrated and certified by a laboratory accredited under HOKLAS or any other international accreditation scheme before use.
Dissolved Oxygen (DO), Temperature and pH measuring equipment
A portable, weatherproof multiparameter instrument (YSI Professional Plus) was used in the monitoring. It can be capable for measuring dissolved oxygen (DO), pH, and temperature simultaneously with the following limits:
¡ a dissolved oxygen level in the range of 0-50 mg/L and 0-500 % saturation;
¡ a temperature of -5 to 45 degrees Celsius; and
¡ pH value of 0-14 with 0.1 as the base unit.
Turbidity Measurement Instrument
Portable and weatherproof turbidity meter (HACH model 2100Q IS) was used during impact monitoring. It has a photoelectric sensor capable of measuring turbidity between 0-1000 NTU. Response of the sensor was checked with certified standard turbidity solutions before the start of measurement.
Global Positioning System (GPS)
A hand-held GPS navigator (Garmin eTrex Vista) was used to identify the designated monitoring stations prior to water sampling.
Suspended Solids and BOD Measurements (Sample Containers and Storage)
Water samples for SS analysis were stored in high density polythene bottles with no preservative added, packed in ice (cooled to 4 ºC without being frozen), delivered to the laboratory, and analysed as soon as possible after collection. Analysis was carried out in a HOKLAS accredited laboratory.
The limits of detection for the in-situ and laboratory measurements are shown in Table 2.11.
Table 2.11: Detection Limits for Water Quality Determinants
|
Determinant |
Limit of Detection |
|
Dissolved Oxygen |
0.1 mg/L |
|
Temperature |
0.1 degree Celsius |
|
pH |
0.01 unit |
|
Turbidity |
0.1 NTU |
|
Suspended Solids |
1 mg/L |
|
BOD |
2 mg/L |
In situ Measurement
All pH meters, DO/temperature meters had been checked and calibrated prior to use. Standard buffer solution of at least two pH levels (either pH 4 and pH 7, or pH 7 and pH 10) had been used for calibration of the instrument before and after use.
DO meters had been calibrated by a laboratory accredited under HOKLAS or any other international accreditation scheme, and subsequently re-calibrated at three-monthly intervals throughout all stages of the water quality monitoring. Responses of sensors and electrodes had been checked with certified standard solutions before each use. Wet bulb calibrations for all DO meters had been carried out before measurement at each monitoring location. For the on-site calibration of field equipment, BS 127:1993, "Guide to field and on-site test methods for the analysis of waters" had been observed.
Measurements shall be at three water depths, namely, 1m below water surface, mid-depth and 1m above stream bed/pond bed, except where the water depth less that 6m, the mid-depth station maybe omitted. Should the water depth be less than 3 m, only the mid-depth station will be monitored.
Replicates in-situ measurements and samples collected from each independent monitoring event are required for all parameters to ensure a robust statistically interpretable dataset.
Water Samples Preparation and Analysis
For collection of water sampling within the water courses, a 500ml clean plastic beaker was used. After collection, the water samples were stored in high-density polythene bottles. The sample container was rinsed with a portion of the water sample. The water sample was then transferred to the container, labelled with a unique sample ID and sealed with a screw cap. The water samples were stored in a cool box maintained at 4 ºC. The water samples were then delivered to a local HOKLAS-accredited laboratory (ALS) on the same day for analysis.
The testing methods of testing parameters as recommended by EIA or required by EPD, with the QA/QC results are in accordance with the requirement of HOKLAS or international accredited scheme.
The calibration certificates for equipment used for in-situ monitoring of water quality are attached in Appendix E.
Target species and certain other fauna will be monitored within the Project Area and Assessment Area during the wetland and residential construction phase. This will be important to ensure that any unexpected events or impacts either on- or off-site are quickly identified so that remedial action can be taken. The groups to be monitored and frequency of monitoring are shown in Table 2.12.
Table 2.12: Summary of Construction Phase Ecological Monitoring for the Wo Shang Wai Wetland Restoration Area (WRA)
|
Species / Parameter |
Construction Phase Ecological
Monitoring |
|
Birds |
Weekly (including Assessment Area). |
|
Dragonflies and Butterflies |
Once per month during March and September to November, and
twice per month during April to August. |
|
Herpetofauna |
Once per month during April to November. |
|
Water
Quality |
After filling of WRA with water, monthly for in situ water quality and every six
months (end of the wet season and end of the dry season) for laboratory
testing. |
|
Site Inspections |
Weekly. |
Ecological monitoring locations during construction phase are shown in Figure 4.1 and the methodology for ecological monitoring is detailed in Section 4.
All measures undertaken by both the Contractor and the specialist Landscape Sub-Contractor during the construction phase and first year of the operational phase shall be audited by a Registered Landscape Architect, as a member of the ET, on a regular basis to ensure compliance with the intended aims of the measures. Site inspections should be undertaken at least once every two weeks throughout the construction period and once every two months during the operational phase.
The broad scope of audit is detailed below but should also be undertaken with reference to the more specific checklist provided in Table 2.13 below. Operational phase auditing will be restricted to the last 12 months of the establishment works of the landscaping proposals and thus only the items below concerning this period are relevant to the operational phase.
¡ The extent of the agreed works area should be regularly checked during the construction phase. Any trespass by the Contractor outside the limit of the works, including any damage to existing trees and woodland shall be noted;
¡ The progress of the engineering works should be regularly reviewed on site to identify the earliest practical opportunities for the landscape works to be undertaken;
¡ All existing vegetation, streams and other features within the study area which are not directly affected by the works are retained and protected;
¡ The methods of protecting existing vegetation proposed by the Contractor are acceptable and enforced;
¡ Preparation, lifting transport and re-planting operations for any transplanted trees;
¡ The layout, design and construction of buildings conforms to requirements specified in the EIA report;
¡ All landscaping works are carried out in accordance with the EIA recommendations and with specifications;
¡ The planting of new trees, shrubs, groundcover, climbers, grasses and other plans, together with the replanting of any transplanted trees are carried out properly and within the right season;
¡ All necessary horticultural operations and replacement planting are undertaken throughout the Establishment Period to ensure the healthy establishment and growth of both transplanted trees and all newly establishment plants.
Table 2.13: Construction and Operation Phase Audit Checklist
|
Area of Works |
Items to be Monitored |
|
Works Area |
Check the extent of the Works to ensure that the Works Area is not
exceeded |
|
Protection of all trees
and woodland blocks to be retained |
Identification and
demarcation of trees / vegetation to be retained, erection of physical
protection (e.g. fencing), monitoring against possible incursion, physical
damage, fire, pollution, surface erosion, etc. |
|
Streams |
Ensure no run-off into
existing streams |
|
Clearance of existing
vegetation |
Identification and
demarcation of trees / vegetation to be cleared, checking of extent of works
to minimize damage, monitoring of adjacent areas against possible incursion,
physical damage, fire, pollution, surface erosion, etc. |
|
Transplanting of trees |
Identification and
demarcation of trees / vegetation to be transplanted, monitoring of extent of
pruning / lifting works to minimize damage, timing of operations
implementation of all stages of preparatory and translocation works, and
maintenance of transplanted vegetation, etc. |
|
Topsoil stripping |
Ensuring existing topsoil
is stripped and stored under recognized good practice and is hydroseeded and
regularly turned to prevent anaerobic conditions |
|
New buildings |
Ensure that building
finishes accord with mitigation proposals with regard to colour and albedo. |
|
Boundaries |
Ensuring hoarding are
erected as required |
|
Noise Barrier |
Ensure noise barrier
design accords with the mitigation proposals with regard to location,
materials and finishes. |
|
Night-time lighting |
Ensuring night-time
lighting is directional, hooded and shielded away from VSRs |
|
Plant supply |
Monitoring of operations
relating to the supply of specialist plant material (including the
collecting, germination and growth of plants from seed) to ensure that plants
will be available in time to be used within the construction works. |
|
Landscape and wetland
treatments generally |
Check that wetland, and
hard / soft landscape designs conform to intent of mitigation measures and
agreed designs |
|
Soiling, planting, etc. |
Monitoring of
implementation and maintenance of soiling and planting works against possible
incursion, physical damage, fire, pollution, surface erosion, etc. |
|
Establishment Works |
Monitoring of
implementation of maintenance operation during Establishment Period |
The monitoring locations should check against the mitigation measures proposed under the approved Environmental Impact Assessment, which are summarised as follows in Table 2.14 and Table 2.15:
Table 2.14: Proposed Construction Phase Mitigation Measures
|
ID No. |
Landscape and Visual Mitigation Measures |
|
CM1 |
The construction area and
contractor’s temporary works areas should be minimised to avoid impacts on
adjacent landscape. |
|
CM2 |
Screening of construction works
by hoardings/noise barriers around Works area in visually unobtrusive
colours, to screen Works. |
|
CM3 |
Reduction of construction
period to practical minimum. |
|
CM4 |
Topsoil, where identified,
should be stripped and stored for re-use in the construction of the soft
landscape works, where the soil material meets acceptable criteria and where
practical. The Contract Specification
shall include storage and reuse of topsoil as appropriate. |
|
CM5 |
Hydroseeding or sheeting
of soil stockpiles with visually unobtrusive material (in earth tone). |
|
CM6 |
Advance screen planting to
noise barriers. |
|
CM7 |
Control night-time
lighting and glare by hooding all lights. |
|
CM8 |
Ensure no run-off into streams
adjacent to Project Area. |
|
CM9 |
Protection of existing
trees on boundary of project area shall be carefully protected during
construction. Detailed Tree Protection
Specification shall be provided in the Contract Specification. Under this
specification, the Contractor shall be required to submit, for approval, a
detailed working method statement for the protection of trees prior to
undertaking any works adjacent to all retained trees, including trees in
contractor’s works areas. (Tree
protection measures will be detailed at S16 and Tree Removal Application
stage). |
|
CM10 |
Trees unavoidably affected
by the works shall be transplanted where practical. Trees should be transplanted straight to
their destinations and not held in a nursery.
A detailed Tree Transplanting Specification shall be provided in the
Contract Specification, if applicable. Sufficient time for necessary tree
root and crown preparation periods shall be allowed in the project programme. |
Table 2.15: Proposed Operation Phase Mitigation Measures
|
ID No. |
Landscape
Mitigation Measures |
|
OM1 |
Compensatory Tree Planting
for all felled trees shall be provided to the satisfaction of relevant
Government departments. Required numbers
and locations of compensatory trees shall be determined and agreed separately
with Government during the Tree Felling Application process under ETWBTC
3/2006. |
|
OM2 |
A continuous belt of screen
planting along southern perimeter of project area with fast growing tree
species. At least 450 trees capable of
reaching a height > 10m within 10 years should be planted. Planting of the belt of trees shall be
carried out as advance works ahead of other site formation and building
works. |
|
OM3 |
Maximise soft landscape
and amenity water bodies in residential areas of the development. Approximately 750 trees (of Heavy Standard
size) should be planted. Where space permits,
roadside berms should be created. Street trees should be of species that
reach a mature height of no less than 15m. |
|
OM4 |
Maximise freshwater
habitat wetland creation consistent with achieving other parameters. Minimum 4.74 ha to be provided. Wetlands must have natural edge profiles
with >1m wide emergent zone. No
access to the wetland by residents and all wetlands must be screened from
residential development by a continuous tree screen at interface with
residential development or earth mounding such that disturbance is minimised.
Implementation of the wetland shall be carried out as advance works. |
|
OM5 |
Use appropriate (visually
unobtrusive and non-reflective) building materials and colours in built
structures. |
|
OM6 |
During detailed design,
refine building layout to create a min. 10m wide gap between buildings north
of Wo Shang Wai pond and also two min. 10m wide gaps in the row of buildings
adjacent to Royal Palms. |
|
OM7 |
Streetscape elements (e.g.
paving, signage, street furniture, lighting etc.) shall be sensitively
designed in a manner that responds to the local context, and minimises
potential negative landscape and visual impacts. Lighting units should be directional and minimise
unnecessary light spill. |
Impact monitoring for air quality (dust), noise and water quality due to the construction work were undertaken during the reporting month in compliance with the EM&A manual in the reporting period. Regular site inspections were carried out on 3, 10, 19 and 24 November 2015 during the reporting month to assess the compliance with environmental requirements.
Results of 1-hour TSP at the four monitoring locations are summarised in Table 3.1. Graphical plots of the monitoring results are shown in Appendix F. The weather conditions in the reporting period are provided in Appendix G.
Table 3.1: Summary of 1-hour TSP Monitoring Results
|
Monitoring |
Start Time |
1-hr TSP (mg/m3) |
Range |
Action Level |
Limit Level |
||
|
Date |
|
1st Result |
2nd Result |
3rd Result |
(mg/m3) |
(mg/m3) |
(mg/m3) |
|
ASR1 |
|
|
|
|
|
|
|
|
05-Nov-15 |
11:44 |
73 |
78 |
71 |
60-126 |
378 |
500 |
|
11-Nov-15 |
11:36 |
83 |
84 |
95 |
|||
|
17-Nov-15 |
11:53 |
66 |
70 |
70 |
|||
|
23-Nov-15 |
11:38 |
116 |
119 |
126 |
|||
|
27-Nov-15 |
11:47 |
62 |
66 |
60 |
|||
|
ASR2A |
|
|
|
|
|
|
|
|
05-Nov-15 |
08:23 |
67 |
57 |
59 |
56-91 |
357 |
500 |
|
11-Nov-15 |
08:21 |
91 |
84 |
75 |
|||
|
17-Nov-15 |
08:28 |
56 |
57 |
59 |
|||
|
23-Nov-15 |
08:18 |
60 |
67 |
62 |
|||
|
27-Nov-15 |
08:26 |
60 |
62 |
63 |
|||
|
ASR3 |
|
|
|
|
|
|
|
|
05-Nov-15 |
08:12 |
132 |
139 |
144 |
63-144 |
358 |
500 |
|
11-Nov-15 |
08:14 |
116 |
119 |
134 |
|||
|
17-Nov-15 |
08:19 |
95 |
100 |
97 |
|||
|
23-Nov-15 |
08:14 |
95 |
106 |
98 |
|||
|
27-Nov-15 |
08:17 |
70 |
67 |
63 |
|||
|
ASR4 |
|
|
|
|
|
|
|
|
05-Nov-15 |
11:36 |
119 |
126 |
113 |
53-126 |
372 |
500 |
|
11-Nov-15 |
11:32 |
81 |
88 |
95 |
|||
|
17-Nov-15 |
11:46 |
78 |
78 |
74 |
|||
|
23-Nov-15 |
11:26 |
80 |
80 |
84 |
|||
|
27-Nov-15 |
11:42 |
53 |
55 |
55 |
|||
Results of 24-hour TSP at the four monitoring locations are summarised in Table 3.2. Graphical plots of the monitoring results are shown in Appendix F. The weather conditions in the reporting period are provided in Appendix G.
Table 3.2: Summary of 24-hour TSP Monitoring Results
|
Monitoring Date |
Monitoring Results (mg/m3) |
Range (mg/m3) |
Action Level (mg/m3) |
Limit Level (mg/m3) |
|
ASR1 |
|
|
|
|
|
05-Nov-15 |
51 |
51-79 |
226 |
260 |
|
11-Nov-15 |
71 |
|||
|
17-Nov-15 |
79 |
|||
|
23-Nov-15 |
70 |
|||
|
27-Nov-15 |
70 |
|||
|
ASR2A |
|
|
|
|
|
05-Nov-15 |
87 |
66-87 |
213 |
260 |
|
11-Nov-15 |
73 |
|||
|
17-Nov-15 |
66 |
|||
|
23-Nov-15 |
68 |
|||
|
27-Nov-15 |
75 |
|||
|
ASR3 |
|
|
|
|
|
05-Nov-15 |
94 |
63-94 |
205 |
260 |
|
11-Nov-15 |
79 |
|||
|
17-Nov-15 |
70 |
|||
|
23-Nov-15 |
63 |
|||
|
27-Nov-15 |
80 |
|||
|
ASR4 |
|
|
|
|
|
05-Nov-15 |
84 |
66-84 |
237 |
260 |
|
11-Nov-15 |
79 |
|||
|
17-Nov-15 |
70 |
|||
|
23-Nov-15 |
69 |
|||
|
27-Nov-15 |
66 |
No exceedance of 1-hour and 24-hour TSP (Action or Limit Level) was recorded in the reporting period.
The construction noise monitoring results are summarized in Table 3.3. Graphical plots of the monitoring data are shown in Appendix F. The weather conditions in the reporting period are provided in Appendix G.
Table 3.3: Summary of Construction Noise Monitoring Results
|
Monitoring Date |
Start Time |
Mean and Range of Noise Levels, dB(A) |
Limit Level for Leq (dB) |
||
|
|
|
Leq |
L10 |
L90 |
|
|
NSR1 |
|
|
|
|
|
|
05-Nov-15 |
10:53 |
47 |
48 |
42 |
>75 |
|
11-Nov-15 |
10:38 |
54 |
56 |
51 |
|
|
17-Nov-15 |
09:00 |
52 |
55 |
42 |
|
|
23-Nov-15 |
10:42 |
46 |
47 |
46 |
|
|
NSR3 |
|
|
|
|
|
|
05-Nov-15 |
10:11 |
48 |
50 |
40 |
>75 |
|
11-Nov-15 |
10:02 |
50 |
52 |
46 |
|
|
17-Nov-15 |
09:40 |
51 |
53 |
43 |
|
|
23-Nov-15 |
10:03 |
49 |
50 |
43 |
|
|
NSR5 |
|
|
|
|
|
|
05-Nov-15 |
08:46 |
52 |
54 |
50 |
>75 |
|
11-Nov-15 |
08:40 |
53 |
55 |
51 |
|
|
17-Nov-15 |
10:20 |
51 |
52 |
45 |
|
|
23-Nov-15 |
08:43 |
48 |
52 |
45 |
|
|
NSR7 |
|
|
|
|
|
|
05-Nov-15 |
09:21 |
64 |
65 |
62 |
>75 |
|
11-Nov-15 |
09:16 |
56 |
59 |
50 |
|
|
17-Nov-15 |
11:00 |
69 |
70 |
67 |
|
|
23-Nov-15 |
09:18 |
67 |
69 |
63 |
|
No exceedance (Action/Limit Level) of construction noise was recorded in the reporting period.
The water quality monitoring results are summarized in Table 3.4. Graphical plots of the monitoring data are shown in Appendix F. The weather conditions in the reporting period are provided in Appendix G.
Table 3.4: Summary of Water Quality Monitoring Results
|
Monitoring Date |
Temp (ºC) |
pH |
Dissolved Oxygen (DO) (mg/L) |
DO (%) |
Turbidity (NT) |
BOD (mg/L) (1) |
Suspended Solids (mg/L) |
|
MP3 |
|
|
|
|
|
|
|
|
02/11/2015 |
25.8 |
7.5 |
7.6 |
93.4 |
25.3 |
2 |
29 |
|
04/11/2015 |
26.6 |
7.6 |
7.4 |
92.1 |
17.5 |
10 |
17 |
|
06/11/2015 |
26.3 |
7.6 |
7.9 |
97.1 |
24.4 |
6 |
30 |
|
09/11/2015 |
26.9 |
7.6 |
7.4 |
93.2 |
14.5 |
5 |
9.5 |
|
11/11/2015 |
26.7 |
7.5 |
7.5 |
93.0 |
14.4 |
4.5 |
16 |
|
13/11/2015 |
25.5 |
7.5 |
7.5 |
91.8 |
33.1 |
10 |
46.5 |
|
16/11/2015 |
25.9 |
7.6 |
7.8 |
96.1 |
21.5 |
7 |
24.5 |
|
18/11/2015 |
24.4 |
7.6 |
7.3 |
87.4 |
26.8 |
6.5 |
31 |
|
20/11/2015 |
23.8 |
7.6 |
7.9 |
93.2 |
24.4 |
9 |
21 |
|
23/11/2015 |
25.1 |
7.6 |
7.3 |
88.0 |
35.1 |
6.5 |
40 |
|
25/11/2015 |
23.6 |
7.6 |
7.4 |
87.1 |
29.2 |
9.5 |
38.5 |
|
27/11/2015 |
21.9 |
7.6 |
7.9 |
90.0 |
24.6 |
8 |
44.5 |
|
30/11/2015 |
22.4 |
7.6 |
8.0 |
92.0 |
28.7 |
9.5 |
24.5 |
|
Action Level |
- |
<5.5 or >7.5 |
<6.85 |
- |
>64 |
- |
>65 |
|
Limit Level |
- |
<4.0 or >8.0 |
<6.65 |
- |
>67 |
- |
>66 |
|
|
|
|
|
|
|
|
|
|
MP4 |
|
|
|
|
|
|
|
|
02/11/2015 |
26.0 |
7.4 |
6.9 |
85.8 |
12.2 |
<2 |
9.5 |
|
04/11/2015 |
26.2 |
7.5 |
7.3 |
90.3 |
12.6 |
2 |
13 |
|
06/11/2015 |
25.7 |
7.5 |
7.5 |
92.0 |
8.4 |
<2 |
4 |
|
09/11/2015 |
26.0 |
7.5 |
6.6 |
81.4 |
16.2 |
<2 |
9.5 |
|
11/11/2015 |
26.1 |
7.4 |
7.3 |
89.9 |
10.5 |
<2 |
7 |
|
13/11/2015 |
25.3 |
7.4 |
7.0 |
85.5 |
8.1 |
<2 |
6 |
|
16/11/2015 |
26.1 |
7.5 |
6.8 |
84.8 |
21.0 |
4 |
23 |
|
18/11/2015 |
24.1 |
7.5 |
7.7 |
91.0 |
12.8 |
3 |
15.5 |
|
20/11/2015 |
24.0 |
7.5 |
6.9 |
80.9 |
13.7 |
<2 |
7.5 |
|
23/11/2015 |
25.6 |
7.5 |
6.9 |
84.2 |
18.2 |
2 |
20 |
|
25/11/2015 |
23.3 |
7.5 |
7.3 |
85.3 |
14.5 |
<2 |
7.5 |
|
27/11/2015 |
21.5 |
7.5 |
8.1 |
91.3 |
11.2 |
<2 |
12.5 |
|
30/11/2015 |
22.1 |
7.5 |
7.3 |
84.0 |
10.1 |
<2 |
9.5 |
|
Action Level |
- |
<5.5 or >7.5 |
<3.91 |
- |
>60 |
- |
>50 |
|
Limit Level |
- |
<4.0 or >8.0 |
<3.82 |
- |
>64 |
- |
>53 |
|
|
|
|
|
|
|
|
|
|
MP5 |
|
|
|
|
|
|
|
|
02/11/2015 |
26.4 |
7.4 |
6.7 |
83.1 |
11.0 |
<2 |
7.5 |
|
04/11/2015 |
26.8 |
7.5 |
7.0 |
88.1 |
12.2 |
<2 |
13 |
|
06/11/2015 |
26.6 |
7.5 |
7.6 |
95.4 |
8.1 |
<2 |
6 |
|
09/11/2015 |
26.4 |
7.5 |
7.6 |
95.0 |
14.7 |
<2 |
9.5 |
|
11/11/2015 |
26.8 |
7.4 |
7.1 |
89.8 |
8.5 |
<2 |
7 |
|
13/11/2015 |
26.0 |
7.4 |
7.2 |
89.2 |
8.7 |
<2 |
5 |
|
16/11/2015 |
26.5 |
7.4 |
6.7 |
84.1 |
21.2 |
4 |
22.5 |
|
18/11/2015 |
24.8 |
7.5 |
7.0 |
85.8 |
14.0 |
3 |
16.5 |
|
20/11/2015 |
24.5 |
7.5 |
7.1 |
85.2 |
12.5 |
<2 |
8 |
|
23/11/2015 |
25.5 |
7.5 |
6.8 |
84.4 |
17.0 |
2.5 |
23.5 |
|
25/11/2015 |
24.0 |
7.5 |
7.3 |
87.6 |
13.3 |
<2 |
6 |
|
27/11/2015 |
21.7 |
7.5 |
8.2 |
93.1 |
12.3 |
6.5 |
22.5 |
|
30/11/2015 |
22.5 |
7.5 |
7.9 |
92.4 |
21.8 |
7 |
20.5 |
|
Action Level |
- |
<5.5 or >7.5 |
<4.13 |
- |
>81 |
- |
>66 |
|
Limit Level |
- |
<4.0 or >8.0 |
<3.87 |
- |
>84 |
- |
>69 |
|
|
|
|
|
|
|
|
|
|
MP6 |
|
|
|
|
|
|
|
|
02/11/2015 |
26.1 |
7.4 |
6.9 |
85.2 |
9.2 |
2 |
7 |
|
04/11/2015 |
27.0 |
7.5 |
6.3 |
79.4 |
14.8 |
<2 |
12 |
|
06/11/2015 |
26.5 |
7.5 |
6.6 |
82.7 |
7.1 |
<2 |
4 |
|
09/11/2015 |
26.7 |
7.5 |
6.9 |
87.0 |
12.3 |
<2 |
10.5 |
|
11/11/2015 |
26.5 |
7.4 |
6.8 |
84.9 |
8.5 |
<2 |
7.5 |
|
13/11/2015 |
26.1 |
7.4 |
6.7 |
83.3 |
8.2 |
<2 |
5.5 |
|
16/11/2015 |
26.6 |
7.4 |
6.4 |
78.9 |
20.5 |
4 |
21.5 |
|
18/11/2015 |
24.7 |
7.5 |
7.4 |
89.7 |
16.2 |
3 |
18 |
|
20/11/2015 |
24.8 |
7.5 |
7.4 |
90.2 |
10.9 |
<2 |
9 |
|
23/11/2015 |
25.7 |
7.5 |
6.9 |
85.2 |
17.9 |
2 |
21.5 |
|
25/11/2015 |
24.1 |
7.5 |
7.1 |
84.9 |
16.0 |
<2 |
7.5 |
|
27/11/2015 |
22.0 |
7.5 |
7.5 |
86.8 |
17.2 |
5.5 |
20 |
|
30/11/2015 |
22.7 |
7.5 |
7.5 |
87.2 |
12.5 |
3 |
13.5 |
|
Action Level |
- |
<5.5 or >7.5 |
<4.61 |
- |
>94 |
- |
>75 |
|
Limit Level |
- |
<4.0 or >8.0 |
<4.52 |
- |
>96 |
- |
>75 |
Notes:
(1) “<2 “ : Value is too low to indicate (<2mg/L).
(2) Values Bold indicate Action Level exceedance.
(3) Values Underlined and Bold indicate Limit Level exceedance.
During
November 2015, a total of ten Action Level exceedances for Water Quality were
observed. Ten Action Level exceedances of pH were observed at MP3; no
exceedances were observed at MP4, MP5 and MP6.
The Event and Action Plan in Appendix D was followed under these cases of exceedances.
Based on the recent site observations carried out by ET, the Contractor implemented the following water quality mitigation measures as recommended in EIA report which include:
¡ Temporary drainage channels were provided to collect the surface runoff generated within the project site; and
¡ Installation of barrier at the drainage channels to intercept site runoff and pump the wastewater to the sedimentation tanks as primary treatment prior to treatment by wastewater treatment facilities (AquaSed), which will ensure all site runoff is treated to satisfactory quality before discharging into the northern ditches.
Exceedance of pH at MP3
During the reporting month at MP3, exceedances of the Action Level of pH were observed on ten monitoring dates. As understood, the fish pond near the site (represented by MP3) was being separated from the construction site by the WRA since November 2010, so the exceedance(s) were not considered to be related to the construction activities. The exceedances of pH may be due to external factors such as pond fish culture activities which were out of the control of the project.
Conclusion
As a result, the abovementioned exceedance(s) were unlikely to be due to the construction works and therefore not considered to be related to the project.
This report documents surveys conducted in the Survey Area between 1 and 30 November 2015. The Wetland Restoration Area (WRA) is also surveyed as the area is accessible and site formation works for WRA has been completed. The updated survey transect is provided in Figure 4.1. Dates and ecological surveys conducted during this period are summarised in Appendix H.
Monitoring was undertaken following the survey methodology in the EM&A Manual. A transect was followed in the bird surveys (see Figure 4.1). All bird species were identified to species and all bird species of conservation importance and/or wetland dependent were enumerated and recorded to the habitats in which they were observed. Flying birds were not recorded unless they were foraging and/or associated with the habitat (such as swifts). Further, notable bird observations during other surveys were also recorded.
Bird surveys were conducted on a weekly basis. A total of 37 bird species were recorded in the
Survey Area (excluding the WRA), 18 of
which were species of conservation importance and/or wetland-dependence. Within
the WRA, 35 bird species were
recorded, 18 of which were
species of conservation importance and/or wetland-dependent species, including two of the target
species (i.e. Little Egret and Chinese Pond Heron). The WRA continues to attract a number of
species of conservation importance, including Grey Heron, Ardea cinere, Black Kite,
Milvus migrans, White-throated Kingfisher, Halcyon smyrnensis, and Greater Spotted Eagle, Clanga
clanga. Yellow Bittern, White-throated
Kingfisher is listed by Fellowes et
al. as of “Local Concern” in 2002.
Black Kite is listed by Fellowes et al.
as of “Regional Concern” in 2002. Grey Heron
is listed by Fellowes et al. as of “Potential Regional
Concern” in 2002. Greater Spotted
Eagle is listed by Fellowes et al. as
of “Global Concern”. Pheasant-tailed Jacana, Hydrophasianus chirurgus, was recorded during the additional
survey. Pheasant-tailed Jacana is listed by Fellowes et al. as of “Local Concern” in 2002.
A summary
of survey data is provided in Appendix I.
One day time herpetofauna survey was conducted in the reporting month. No amphibian species and no reptile species were recorded in the Survey Area (excluding the WRA) nor within the WRA during the regular survey and additional survey. A summary of the survey findings is provided in Appendix J.
Odonata (including dragonfly) and butterfly surveys were conducted on a monthly basis during the reporting month in accordance with the EM&A Manual. No odonata species and no butterfly species were recorded in the Survey Area (excluding the WRA). Within the WRA, no odonata species were recorded while seven butterfly species were recorded.
A summary of the survey findings is provided in Appendix J.
Monitoring of mammals was conducted concurrently with other
surveys. No mammals were recorded in the Survey Area (excluding the WRA) nor within the WRA during regular
survey.
A summary of the survey findings is provided in Appendix J.
No water quality issue was recorded during the reporting
period. Monitoring data are presented in Appendix K.
Removal of exotic vegetation in all cells was undertaken; these included but not limited to Ipomoes sp., Mikania sp., Mimosa sp., Pennisetum sp. and Typha sp..
Vegetation management activities undertaken at the site primarily involved watering of plants, weeding and grass cutting.
Removal of Golden Apple Snail was undertaken on an “as-seen” basis.
All sighted Red Fire Ant nests were treated with approved pesticide.
Ecological monitoring during November 2015 was carried out according to the survey methodology and frequency outlined in the EM&A Manual.
Summary of survey findings is listed in Table 4.1 below:
Table 4.1: Summary of Ecological Monitoring in WRA and Survey Area
|
Species |
Survey Area (excluding WRA) |
WRA |
|
Birds (total) |
37 |
35 |
|
Birds (of conservation importance
and/or wetland-dependence) |
18 |
18 |
|
Amphibians |
0 |
0 |
|
Reptiles |
0 |
0 |
|
Mammals |
0 |
0 |
|
Odonates |
0 |
0 |
|
Butterflies |
0 |
7 |
Survey findings indicate that the ponds within the Survey Area supported numbers and diversity of wetland-dependent birds typical of fish pond areas. The WRA continues to attract wetland dependent fauna and serves as a buffer between the residential portion and the fishponds in the north.
The EM&A programme for Landscape and Visual impact due to the construction commenced in June 2010 and continued during the reporting period. Site inspections on Landscape and Visual impact were carried out on 13 and 30 November 2015 to confirm the implementation of mitigation measures at construction stage.
The audit was undertaken with references to the specific checklists provided in Table 2.13 – 2.15 and audit results are summarized below in Table 5.1. Representative photos showing the implementation of mitigation measures are presented in Appendix M.
Table 5.1: Construction and Operation Phase Audit Summary
|
Area of Works |
Items of be Monitored |
|
Works Area |
The boundaries of
the works area have been established on site in accordance with the contract documents
and approved plans (EP), and the limit of current heavy construction activity
is now confined to within the site hoardings (North side of the site / access
road) and the noise barriers (other sides of the site). Minor works such as
horticultural maintenance of the planting and transplanted trees, and
boundary fence repair was proceeding along the Royal Palms – Palm Springs
boundary. (Appendix M Photo 1 –
Table 2.14 CM2 refers) No construction
works were observed to have exceeded the site boundaries. No construction was carried out at the wetland restoration
area
after 15 November 2010. |
|
Protection of all
trees and woodland blocks to be retained |
Trees retained
within the site along the northeast boundary, beside wetland restoration
area, have been identified and protected by temporary protective fencing. |
|
Streams |
The works site is
partly encircled by a berm / perimeter channel to intercept surface water and
prevent it from washing off into any of the neighboring sites. Surface water is collected within the site
in a temporary drainage channel.
Gravels beds and barriers have been installed to filter site runoff,
sedimentation ponds have been provided to enable primary treatment before
discharge to mains drains. |
|
Clearance of
existing vegetation |
Site clearance was
completed prior to the commencement of construction. |
|
Transplanting of
trees |
Tree transplanting has
been completed, with the trees relocated to various points within the
planting strip along the southern boundary of the site, outside the noise
barrier. The trees continue to
re-establish well. |
|
Topsoil stripping |
Suitable pond bund
and soil material which had been excavated and stockpiled from the original
site, has now been re-used within the landscape works. Dust suppression
measures are active along all internal site access tracks. |
|
New buildings |
No new permanent
buildings have yet been constructed on site. |
|
Boundaries |
Hoardings have been
erected along most of the boundaries of the site. Installation of new screen fence between
the future residential sites and the constructed wetland restoration areas is
complete. Fence has been painted green to match with the surrounding
vegetated environment. (Appendix M Photo 1 –
Table 2.14 CM2 refers) |
|
Noise Barrier |
Noise barriers have
been installed along the southern and western boundaries of the site in
accordance with the contract requirements.
Their design complies with the mitigation requirements, with upper 6
to 7m portion of the barrier being made from a translucent material with
green tinted (to match with the environment). Supporting GMS structure,
likewise, has been painted green. (Appendix M Photo 3 –
Table 2.14 CM6 refers) |
|
Night-time lighting |
No night-time works
were reported to have been carried out during the monitoring period. |
|
Landscape and
wetland treatments generally |
Continuous belt of
screen planting along the southern and western boundaries of the site has
been completed. The formation, soiling
and water control structures of the wetland restoration area have been
completed. (Appendix M Photo 3 – Table 2.14 CM6
refers) The wetland areas
are being established, with the ponds are being seasonally filled with rain
water. Planting of areas around the
WRA cells is complete. No construction
was carried out at the wetland restoration area after 15 November 2010. (Appendix M Photo 2 – Table 2.14 CM2
refers) |
|
Soiling, etc. |
The soiling for the
advance planting strip has been completed.
The soil placement and grading for each of the wetland restoration
areas has been completed. |
|
Plant supply |
The plant material
used in the Advance Planting Strip and in the WRA are all commonly available species
and came from commercial sources. Transplanted reeds (Phragmites
australis) at the wetland habitat came from the temporary holding nursery
onsite. |
|
Planting |
The tree species
are all from the approved list. One tree was identified
as dead in previous month or having defects (i.e. extensive bark damage,
cavities, fungal growths, etc.) still need to be replaced with new specimens.
Some of the recently planted trees are still in poor condition, but are
showing small signs of graduate improvement. Seedling trees and
shrubs, have been established at the margins of the wetland cells. Some
additional fill-in planting has been undertaken. |
|
Establishment Works |
The advance planting, the compensatory planting and
transplanted trees are generally being maintained by the landscape
sub-contractor in accordance with the specification to ensure that the
contract requirements are met, although treatment of damaged / defective
trees needs urgent attention. One tree was identified as dead in previous month
still need to be replaced with new specimens. Trees with significant defects
(i.e. extensive bark damage, cavities, fungal growths, etc.) need to be
replaced with new specimens. Most overhanging trees from adjacent property
that were affecting the strip planting have been pruned back. Many trees are growing (and have become dependent
for support) on the noise barrier frame, and are being deformed and damaged.
Trees should either be physically separated from the structure, or the
structure modified to avoid impacting on trees. Pruning of tall shrubs (e.g. Ligustrum sinensis) needs to be undertaken regularly. Removal of extensive growth of weeds and invasive
climbers in the space behind screen noise barrier needs to be undertaken on a
monthly basis as they may be inhibiting the advance planting. Climbers were
still found on shrub plantings (i.e. Mikania
micranth) and railing, and should be cleared immediately. Phragmites
australis reeds are now
occupying at least 80% of the reed bed areas within the WRC (as per design),
but have also spread to the non-reed bed areas and are out-competing the
intended planting. Management of this vegetation is required if the intended
planting design is to be achieved. Regular horticultural maintenance (grass cutting,
weeding, watering etc.) in the shrubs and tree seedling areas around the WRA
cells is being undertaken. A comprehensive tree survey has just been
undertaken by the new landscape contractor. The growth of shrubs / seedlings on the
north side of WRA1 remains fair. |
The ET had carried out construction phase weekly site inspections on 3, 10, 19 and 24 November 2015. All observations have been recorded in the site inspection checklist and passed to the Contractor together with the appropriate recommended mitigation measures where necessary. The key observations from site inspections and associated recommendations are summarized in Table 6.1.
Table 6.1: Summary of Site Inspections and Recommendations
|
Key Observations |
ET Recommendation |
Contractor’s Responses / Action(s) Undertaken |
Close-out (Date) |
|
Unclosed interception barrier near wetsep tank discharge was
observed. (3 November 2015). |
The Contractor
was reminded to ensure the mitigation measure is well implemented to prevent
leakage of untreated discharge. |
Agreed and followed up |
10 November 2015 |
|
The warning sign used for the storage area of chemical wastes were
not displayed with a label in accordance with the Code of Practice on the
Packaging, Labelling and Storage of Chemical Wastes. (19 November 2015) |
The
Contractor was reminded to follow-up. |
Agreed and followed up |
24 November 2015 |
The Contractor has been registered as a chemical waste producer for the Project. Construction and demolition (C&D) material sorting was carried out on site. A sufficient number of receptacles were available for general refuse collection.
As advised by the Contractor, no C&D material was generated on site during the period. 1 kg of metals was generated and collected by registered recycling collector. 1 kg of paper/cardboard packing and 1 kg of plastic were generated on site and collected by registered recycling collector. No chemical waste was generated and collected by licensed chemical waste collector. 1 kg of other types of wastes (e.g. general refuse) was generated on site and disposed of at public landfill facility.
The Contractor is advised to maintain on site waste sorting and recording system and maximize reuse / recycling of C&D wastes.
The environmental permits, licenses, and/or notifications on environmental protection for this Project which were valid during the reporting period is summarised in Table 6.2.
Table 6.2: Status of Environmental Submissions, Licenses and Permits
|
Statutory Reference |
Description |
Permit/Reference No. |
Status |
|
EIAO |
Environmental Permit |
EP-311/2008/D |
Valid |
|
APCO |
Notification of Construction Work under APCO |
316688 (27 Apr 2010) |
Valid |
|
WPCO |
Discharge License |
WT00022647-2015 (8 Oct 2015) |
Valid |
|
WDO |
Registration as Chemical Waste Producer |
WPN0000-542-H3083-04 |
Valid |
|
WDO |
Bill Account for Disposal |
700945423 |
Valid |
Legend: EIAO – Environmental Impact Assessment Ordinance; APCO – Air Pollution Control Ordinance; WPCO – Water Pollution Control Ordinance; WDO – Waste Disposal Ordinance
The EM&A programme followed the recommended mitigation measures in the EM&A Manual. The EM&A requirements as well as the summary of implementation status of the environmental mitigation measures are provided in Appendix L. In particular, the following mitigation measures were brought to attention during the site audits.
Water Quality
¡ Site effluent should be discharged in accordance with discharge licence.
Waste Management
¡ The chemical waste storage area should be clearly labelled.
There was no breach of Action or Limit Levels for Air Quality and Noise monitoring in the reporting month.
During
November 2015, a total of ten Action Level exceedances for Water Quality were
observed. Ten Action Level exceedances of pH were observed at MP3; no
exceedances were observed at MP4, MP5 and MP6.
A summary is presented in Table 7.1 below.
Table 7.1: Summary of Exceedances in Water Quality
|
Monitoring Date |
pH |
Dissolved Oxygen (DO) (mg/L) |
Turbidity (NT) |
Suspended Solids (mg/L) |
|
MP3 |
|
|
|
|
|
02/11/2015 |
7.5 |
7.6 |
25.3 |
29 |
|
04/11/2015 |
7.6 |
7.4 |
17.5 |
17 |
|
06/11/2015 |
7.6 |
7.9 |
24.4 |
30 |
|
09/11/2015 |
7.6 |
7.4 |
14.5 |
9.5 |
|
11/11/2015 |
7.5 |
7.5 |
14.4 |
16 |
|
13/11/2015 |
7.5 |
7.5 |
33.1 |
46.5 |
|
16/11/2015 |
7.6 |
7.8 |
21.5 |
24.5 |
|
18/11/2015 |
7.6 |
7.3 |
26.8 |
31 |
|
20/11/2015 |
7.6 |
7.9 |
24.4 |
21 |
|
23/11/2015 |
7.6 |
7.3 |
35.1 |
40 |
|
25/11/2015 |
7.6 |
7.4 |
29.2 |
38.5 |
|
27/11/2015 |
7.6 |
7.9 |
24.6 |
44.5 |
|
30/11/2015 |
7.6 |
8.0 |
28.7 |
24.5 |
|
Action Level |
<5.5 or >7.5 |
<6.85 |
>64 |
>65 |
|
Limit Level |
<4.0 or >8.0 |
<6.65 |
>67 |
>66 |
Notes:
(1) “<2 “ : Value is too low to indicate (<2mg/L).
(2) Values Bold indicate Action Level exceedance.
(3) Values Underlined and Bold indicate Limit Level exceedance.
No environmental complaint was received during the reporting month.
No notifications of summons or successful prosecution were received the reporting month.
Non-compliance
Investigations have been carried out to identify the causes of the water quality exceedances.
From investigation, construction activities during the period of exceedance included mainly site formation as well as pond drainage management in the Wetland Restoration Area (to lower the water level and remove unwanted species in the pond).
The fish pond near the site (represented by MP3) was being separated from the construction site by the WRA since November 2010, so the exceedances of pH at MP3 were not considered to be related to the construction activities.
As a result, the abovementioned exceedance(s) were unlikely to be due to the project construction works and therefore not considered to be related to the project.
Complaints, Summons and Prosecutions
Not applicable for this reporting month.
Non-compliance
As
non-compliances have been recorded, the Event and Action Plan has been
followed. Although it is considered that the exceedances were not related to
the Project, the Contractor was reminded to implement the water quality
mitigation measures in accordance with the recommendation stated in Section
5.6.1 – 5.6.4 of the EIA Report as far as practicable and regular spot check
would be conducted on the nearby discharge by Contractor and inform ET for
investigation.
Complaints, Summons and Prosecutions
Not applicable for this reporting month.
Cumulative statistics for complaints, notifications of summons and successful prosecutions for the Project account for period starting from the date of commencement of construction (i.e. 12 May 2010) to the end of the reporting month and are summarized in Table 7.2 below.
Table 7.2: Statistics for Complaints, Notifications of Summons and Successful Prosecution
|
Reporting Period |
Cumulative Statistics |
||
|
|
Complaints |
Notifications of Summons |
Successful Prosecutions |
|
This reporting month (November 2015) |
0 |
0 |
0 |
|
From 12 May 2010 to end of the reporting month (November 2015) |
8 |
0 |
0 |
The major site works to be commissioned in the coming month include:
¡ Site formation
¡ Pond drainage management (to lower the water level and remove unwanted species in the pond)
Key issues to be considered in the coming three months include:
¡ Generation of dust from activities on-site and the haul road during dry weather conditions;
¡ Provision of wheel washing facilities at vehicle exit point;
¡ Generation and treatment of site surface runoffs and wastewater from activities on-site and during wet weather conditions;
¡ Sorting, recycling, storage and disposal of general refuse and construction waste from activities on-site; and
¡ Management of chemicals and avoidance of oil spillage on-site and to the drainage system.
The environmental site inspection and environmental monitoring will be continued in the coming month. Impact monitoring for air, noise, water quality, ecology and landscape and visual in accordance with the approved EM&A Manual has commenced since 12 May 2010. The tentative monitoring schedule for December 2015 is shown in the Table 8.1.
Table 8.1: Tentative Environmental Monitoring and Audit Schedule for the Next Reporting Month
The EM&A programme as recommended in the EM&A manual has been undertaken in the reporting month since 12 May 2010.
Monitoring of Air Quality, Noise, Water Quality, Ecology and Landscape and Visual impacts due to the Project was under way. In particular, the 1-hr TSP, 24-hr TSP, noise level (as Leq) and water quality parameters (such as pH, DO, turbidity and SS) under monitoring have been checked against established Action and Limit levels.
There was no breach of Action or Limit levels for Air Quality (1-hr TSP and 24-hr TSP) and Noise level (as Leq) in the reporting month.
During
November 2015, a total of ten Action Level exceedances for Water Quality were
observed. Ten Action Level exceedances of pH,were observed at MP3, no
exceedances were observed at MP4, MP5 and MP6.
With considerations on the construction activities and environment, the following recommendations were provided:
Air Quality
¡ All stockpiles should be covered by tarpaulin or kept wet by water spraying;
¡ All vehicles should be washed to remove any dusty materials before leaving the construction sites;
¡ The portion of road leading the construction site that is within 30m of a designated vehicle entrance or exit should be kept clear of dusty materials;
¡ During the dry season, sufficient water spraying should be provided at haul road to reduce dust emission; and
¡ Ensure proper functioning of the wheel wash facility.
Noise
¡ Mobile plant should be sited as far away from NSRs as possible;
¡ Plant known to emit noise strongly in one direction should be orientated to direct noise away from the NSRs; and
¡ The construction activities should be better scheduled to reduce noise nuisance.
Water Quality
¡ Effluent should be discharged in accordance with the discharge licence conditions;
¡ Soil contaminated with chemicals/oils should be removed from site and the voids should be created filled with suitable materials; and
¡ Silt and debris should be removed from the temporary drainage channel regularly.
Waste Management
¡ Reuse the excavated materials as far as practical to reduce the amount of waste disposal;
¡ C&D waste should be segregated and stored in different containers to other wastes to encourage the re-use or recycling of materials and their proper disposal;
¡ Ensure drip trays are provided for chemical containers to prevent leakage or soil contamination;
¡ All plants and vehicles should be properly maintained to prevent oil leakage; and
¡ Oil stains on soil should be cleared by disposal of contaminated soil.
Contact Information:
|
Company |
Position |
Name |
Phone Number |
|
Profit Point Enterprises Limited (Project
Proponent) |
Project Manager |
Mr. Kelvin LAU |
2908 8114 |
|
Heng Shung Construction Co. Ltd. |
Assistant Construction Manager |
Ms. Lynne HUNG |
2908 2391 |
|
(The Contractor) |
Site Agent |
Mr. LEUNG Hin Keung |
9405 5626 |
|
|
Environmental Officer |
Mr. Steve NG |
9869 4005 |
|
Ramboll Environ Hong Kong
Limited (Independent
Environmental Checker (IEC)) |
Independent Environmental Checker |
Mr. David YEUNG |
3743 0788 |
|
Mott MacDonald Hong
Kong Ltd. (Environmental Team (ET)) |
Environmental Team Leader |
Mr. Terence KONG (until 15 Nov 2015) |
2828 5919 |
|
|
|
Mr. Brandon WONG (from 16 Nov 2015) |
2828 5875 |
Air Quality
Action and Limit Levels for 24-hour TSP
|
Monitoring Station |
Action Level (mg/m3) |
Limit Level (mg/m3) |
|
ASR1 |
226 |
260 |
|
ASR2A |
213 |
260 |
|
ASR3 |
205 |
260 |
|
ASR4 |
237 |
260 |
Action and Limit Levels for 1-hour TSP
|
Monitoring Station |
Action Level (mg/m3) |
Limit Level (mg/m3) |
|
ASR1 |
378 |
500 |
|
ASR2A |
357 |
500 |
|
ASR3 |
358 |
500 |
|
ASR4 |
372 |
500 |
Noise
Action and Limit Levels for Construction Noise
|
Time Period |
Action Level |
Limit Level |
|
NSR1, NSR3,
NSR5, NSR7 |
|
|
|
0700 – 1900 hours on normal weekdays |
When one documented complaint is received from any one of the sensitive receivers |
75 dB(A) |
Water Quality
Action and Limit Levels for Water Quality
|
Monitoring Location |
DO (mg/L) |
Turbidity (NTU) |
SS (mg/L) |
pH |
||||
|
|
Action Level |
Limit Level |
Action Level |
Limit Level |
Action Level |
Limit Level |
Action Level |
Limit Level |
|
MP1 |
1.23 |
1.17 |
173 |
177 |
231 |
299 |
< 5.5 or > 7.5 |
< 4.0 or > 8.0 |
|
MP2 |
1.04 |
0.89 |
132 |
163 |
170 |
209 |
||
|
MP3 |
6.85 |
6.65 |
64 |
67 |
65 |
66 |
||
|
MP4 |
3.91 |
3.82 |
60 |
64 |
50 |
53 |
||
|
MP5 |
4.13 |
3.87 |
81 |
84 |
66 |
69 |
||
|
MP6 |
4.61 |
4.52 |
94 |
96 |
75 |
75 |
||
|
Appendix D. Event and Action Plan for Air Quality, Noise, Water Quality, Ecology and Landscape & Visual |
Air Quality
|
Event |
Action |
|
|
|
|
|
ET Leader |
IEC |
ER |
Contractor |
|
Action Level |
|
|
|
|
|
1.
Exceedance
for one sample |
1. Identify source, investigate
the causes of exceedance and propose remedial measures. 2. Inform IEC and ER. 3. Repeat measurement to confirm
finding. 4. Increase monitoring frequency
to daily. |
1. Check monitoring data submitted
by ET. 2. Check Contractor’s working
method. |
1. Notify Contractor. |
1. Rectify any unacceptable
practice. 2. Amend working methods if
appropriate. |
|
2.
Exceedance for
two or more consecutive samples |
1. Identify the source. 2. Inform IEC and ER. 3. Advise ER on the effectiveness
of the proposed remedial measures 4. Repeat measurements to confirm
findings. 5. Increase monitoring frequency
to daily. 6. Discuss with IEC and the
Contractor on remedial actions required. 7. If exceedance continues,
arrange meeting with IEC and ER. 8. If exceedance stops, cease
additional monitoring. |
1. Check monitoring data submitted
by ET. 2. Check the Contractor’s working
method. 3. Discuss with ET Leader and the
Contractor on possible remedial measures. 4. Advise ER on the effectiveness
of the proposed remedial measures. 5. Supervise implementation of
remedial measures. |
1. Confirm receipt of notification
of exceedance in writing. 2. Notify the Contractor. 3. Ensure remedial measures
properly implemented. |
1. Submit proposals for remedial actions
to IEC within 3 working days of notification. 2. Implement the agreed proposals. 3. Amend proposal if appropriate. |
|
Limit Level |
|
|
|
|
|
1.
Exceedance
for one sample |
1. Identify source, investigate the
causes of exceedance and propose remedial measures. 2. Inform ER and EPD. 3. Repeat measurement to confirm
finding. 4. Increase monitoring frequency
to daily. 5. Assess effectiveness of
Contractor’s remedial actions and keep IEC, EPD and ER informed of the
results. |
1. Check monitoring data submitted
by ET. 2. Check the Contractor’s working
method. 3. Discuss with ET Leader and the
Contractor on possible remedial measures. 4. Advise ER on the effectiveness
of the proposed remedial measures. 5. Supervise implementation of
remedial measures. |
1. Confirm receipt of notification
of exceedance in writing. 2. Notify the Contractor. 3. Ensure remedial measures
properly implemented. |
1. Take immediate action to avoid
further exceedance. 2. Submit proposals for remedial actions
to IEC within 3 working days of notification. 3. Implement the agreed proposals. 4. Amend proposal if appropriate. |
|
2.
Exceedance for
two or more consecutive samples |
1. Notify IEC, ER, EPD and the
Contractor. 2. Identify the source. 3. Repeat measurements to confirm
findings. 4. Increase monitoring frequency
to daily. 5. Carry out analysis of the
Contractor’s working procedures to determine possible mitigation to be
implemented. 6. Arrange meeting IEC and ER to
discuss the remedial actions to be taken. 7. Assess effectiveness of the
Contractor’s remedial actions and keep IEC, EPD and ER informed of the
results. 8. If exceedance stops, cease
additional monitoring. |
1. Discuss amongst ER, ET Leader
and the Contractor on the potential remedial actions. 2. Review the Contractor’s
remedial actions whenever necessary and advise ER accordingly. 3. Supervise the implementation of
remedial measures. |
1. Confirm receipt of notification
of exceedance in writing. 2. Notify the Contractor. 3. In consultation with IEC, agree
with the remedial measures to be implemented. 4. Ensure remedial measures are
properly implemented. 5. If exceedance continues,
consider what activity of the work is responsible and instruct the Contractor
to stop that activity of work until the exceedance is abated. |
1. Take immediate action to avoid
further exceedance. 2. Submit proposals for remedial
actions to IEC within 3 working days of notification. 3. Implement the agreed proposals. 4. Resubmit proposals if problem
still not under control. 5. Stop the relevant activity of
works as determined by ER until the exceedance is abated. |
Construction Noise
|
Event |
Action |
|
|
|
|
|
ET Leader |
IEC |
ER |
Contractor |
|
Action Level |
1. Notify
IEC and the Contractor. 2. Carry
out investigation. 3. Report the
results of investigation to IEC and the Contractor. 4. Discuss
with the Contractor and formulate remedial measures. 5. Increase
monitoring frequency to check mitigation measures. |
1. Review
with analysed results submitted by ET. 2. Review
the proposed remedial measures by the Contractor and advise ER accordingly. 3. Supervise
the implement of remedial measures. |
1. Confirm
receipt of notification of exceedance in writing. 2. Notify
the Contractor. 3. Require
the Contractor to propose remedial measures for the analysed noise problem. 4. Ensure
remedial measures are properly implemented. |
1. Submit
noise mitigation proposals to IEC. 2. Implement
noise mitigation proposals. |
|
Limit Level |
1. Identify
the source. 2. Notify
IEC, ER, EPD and the Contractor. 3. Repeat measurement
to confirm findings. 4. Increase
monitoring frequency. 5. Carry
out analysis of Contractor’s working procedures to determine possible
mitigation to be implemented. 6. Inform
IEC, ER, and EPD the causes & actions taken for the exceedances. 7. Assess effectiveness
of the Contractor’s remedial actions and keep IEC, EPD and ER informed of the
results. 8. If
exceedance stops, cease additional monitoring. |
1. Discuss
amongst ER, ET Leader and the Contractor on the potential remedial actions. 2. Review
the Contractor’s remedial actions whenever necessary to assure their
effectiveness and advise ER accordingly. 3. Supervise
the implementation of remedial measures. |
1. Confirm
receipt of notification of exceedance in writing. 2. Notify
the Contractor. 3. Require
the Contractor to propose remedial measures for the analysed noise problem. 4. Ensure
remedial measures are properly implemented. 5. If
exceedance continues, consider what activity of the work is responsible and
instruct the Contractor to stop that activity of work until the exceedance is
abated. |
1. Take
immediate action to avoid further exceedance. 2. Submit
proposals for remedial actions to IEC within 3 working days of notification. 3. Implement
the agreed proposals. 4. Resubmit
proposals if problem still not under control. 5. Stop the
relevant activity of works as determined by the ER until the exceedance is
abated. |
Water Quality
|
Event |
Action |
|
|
|
|
|
ET Leader |
IEC |
ER |
Contractor |
|
Action Level |
|
|
|
|
|
1.
Exceedance
for one sample |
1. Repeat
in-situ measurement to confirm finding; 2. Identify
source(s) of impact; 3. Inform
IEC and Contractor; 4. Check
monitoring data, all plant, equipment and Contractor’s working methods; 5. Discuss
mitigation measures with IEC and Contractor; and 6. Repeat
measurement on next day of exceedance. |
1. Discuss
with ET and Contractor on the mitigation measures; 2. Review
proposals on mitigation measures submitted by Contractor and advise the ER
accordingly; and 3. Assess
the effectiveness of the implemented mitigation measures. |
1. Discuss
with IEC on the proposed mitigation measures; and 2. Make
agreement on the mitigation measures to be implemented. |
1. Inform
the ER and confirm notification of the non-compliance in writing; 2. Rectify
unacceptable practice; 3. Check
all plant and equipment; 4. Consider
changes of working methods; 5. Discuss
with ET and IEC and propose mitigation measures to IEC and ER; and 6. Implement
the agreed mitigation measures. |
|
2.
Exceedance for
two or more consecutive samples |
1. Repeat
in-situ measurement to confirm finding; 2. Identify
source(s) of impact; 3. Inform
IEC and Contractor; 4. Check
monitoring data, all plant, equipment and Contractor’s working methods; 5. Discuss
mitigation measures with IEC and Contractor; 6. Ensure
mitigation measures are implemented; 7. Prepare
to increase the monitoring frequency to daily; and 8. Repeat
measurement on next day of exceedance. |
1. Discuss
with ET and Contractor on the mitigation measures; 2. Review
proposals on mitigation measures submitted by Contractor and advise the ER
accordingly; and 3. Assess
the effectiveness of the implemented mitigation measures. |
1. Discuss
with IEC on the proposed mitigation measures; 2. Make
agreement on the mitigation measures to be implemented; and 3. Assess
the effectiveness of the implemented mitigation measures. |
1. Inform
the Engineer and confirm notification of the non-compliance in writing; 2. Rectify
unacceptable practice; 3. Check
all plant and equipment; 4. Consider
changes of working methods; 5. Discuss
with ET and IEC and propose mitigation measures to IEC and ER within 3
working days; and 6. Implement
the agreed mitigation measures. |
|
Limit Level |
|
|
|
|
|
1.
Exceedance
for one sample |
1. Repeat
in-situ measurement to confirm finding; 2. Identify
source(s) of impact; 3. Inform
IEC, Contractor and EPD; 4. Check
monitoring data, all plant, equipment and Contractor’s working methods; 5. Discuss
mitigation measures with IEC, ER and Contractor; 6. Ensure
mitigation measures are implemented; and 7. Increase
the monitoring frequency to daily until no exceedance of Limit level. |
1. Discuss
with ET and Contractor on the mitigation measures; 2. Review
proposals on mitigation measures submitted by Contractor and advise the ER
accordingly; and 3. Assess
the effectiveness of the implemented mitigation measures. |
1. Discuss
with IEC, ET and Contractor on the proposed mitigation measures; and 2. Request
Contractor to critically review the working methods; 3. Make
agreement on the mitigation measures to be implemented; and 4. Assess
the effectiveness of the implemented mitigation measures. |
1. Inform
the Engineer and confirm notification of the non-compliance in writing; 2. Rectify
unacceptable practice; 3. Check
all plant and equipment; 4. Consider
changes of working methods; 5. Discuss
with ET and IEC and ER and propose mitigation measures to IEC and ER within 3
working days; and 6. Implement
the agreed mitigation measures. |
|
2.
Exceedance for
two or more consecutive samples |
1. Repeat
in-situ measurement to confirm finding; 2. Identify
source(s) of impact; 3. Inform
IEC, Contractor and EPD; 4. Check
monitoring data, all plant, equipment and Contractor’s working methods; 5. Discuss
mitigation measures with IEC, ER and Contractor; 6. Ensure
mitigation measures are implemented; and 7. Increase
the monitoring frequency to daily until no exceedance of Limit level for two
consecutive days. |
1. Discuss
with ET and Contractor on the mitigation measures; 2. Review
proposals on mitigation measures submitted by Contractor and advise the ER
accordingly; and 3. Assess
the effectiveness of the implemented mitigation measures. |
1. Discuss
with IEC, ET and Contractor on the proposed mitigation measures; and 2. Request
Contractor to critically review the working methods; 3. Make
agreement on the mitigation measures to be implemented; 4. Assess
the effectiveness of the implemented mitigation measures; and 5. Consider
and instruct, if necessary, the Contractor to slow down or to stop all or
part of the marine work until no exceedance of Limit Level. |
1. Inform
the ER and confirm notification of the non-compliance in writing; 2. Rectify
unacceptable practice; 3. Check
all plant and equipment; 4. Consider
changes of working methods; 5. Discuss
with ET and IEC and ER and propose mitigation measures to IEC and ER within 3
working days; 6. Implement
the agreed mitigation measures; and 7. As
directed by the Engineer, to slow down or to stop all or part of the marine
work or construction activities. |
|
November 2015 |
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
10 |
11 |
12 |
13 |
14 |
15 |
|
Mammals |
|
|
ü |
|
|
|
|
|
|
ü |
|
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|
|
Birds |
|
|
ü |
|
|
|
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|
ü |
|
|
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|
Herpetofauna |
|
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|
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Dragonflies & butterflies |
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Water Quality |
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Inspection Visits |
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|
ü |
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|
ü |
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|
ü |
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|
ü |
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|
November 2015 |
16 |
17 |
18 |
19 |
20 |
21 |
22 |
23 |
24 |
25 |
26 |
27 |
28 |
29 |
30 |
|
|
Mammals |
|
ü |
|
|
|
|
|
|
ü |
|
|
|
|
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|
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|
Birds |
|
ü |
|
|
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|
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|
ü |
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|
Herpetofauna |
|
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|
ü |
|
|
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Dragonflies & butterflies |
|
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|
ü |
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Water Quality |
|
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|
ü |
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|
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|
Inspection Visits |
|
ü |
|
|
ü |
|
|
|
ü |
|
|
ü |
|
|
|
|
Note:
1. Light grey cells indicate public holidays, Saturdays or Sundays.
.
Table I1: Summary of bird species of conservation importance and/or wetland-dependence recorded in the Survey Area (excluding the WRA)
|
Species Name(4) |
Scientific Name(4) |
Wetland Dependence |
Conservation Status(1) |
Nov 2015 Occurrence(2) |
Nov 2015 Mean(3) |
Records outside surveys |
|
Little Grebe |
Tachybaptus ruficollis |
Y |
LC |
4 |
12.0 |
ü |
|
Great Cormorant |
Phalacrocorax carbo |
Y |
PRC |
4 |
4.5 |
ü |
|
Grey Heron |
Ardea cinerea |
Y |
PRC |
4 |
11.8 |
ü |
|
Great Egret |
Ardea alba |
Y |
PRC, (RC) |
4 |
18.8 |
ü |
|
Little Egret |
Egretta garzetta |
Y |
PRC, (RC) |
4 |
19.8 |
ü |
|
Chinese Pond Heron |
Ardeola bacchus |
Y |
PRC, (RC) |
4 |
16.5 |
ü |
|
Black Kite |
Milvus migrans |
Y |
RC |
1 |
0.3 |
|
|
Eastern Buzzard |
Buteo japonicus |
Y |
- |
- |
- |
ü |
|
White-breasted Waterhen |
Amaurornis phoenicurus |
Y |
- |
3 |
1.5 |
ü |
|
Common Moorhen |
Gallinula chloropus |
Y |
- |
2 |
0.8 |
|
|
Green Sandpiper |
Tringa ochropus |
Y |
- |
1 |
0.3 |
ü |
|
Common Sandpiper |
Actitis hypoleucos |
Y |
- |
4 |
2.0 |
ü |
|
Pied Kingfisher |
Ceryle rudis |
Y |
(LC) |
3 |
1.3 |
|
|
White-throated Kingfisher |
Halcyon smyrnensis |
Y |
LC |
2 |
0.8 |
|
|
Common Kingfisher |
Alcedo atthis |
Y |
- |
4 |
2.5 |
ü |
|
Eastern Yellow Wagtail |
Motacilla tschutschensis |
Y |
- |
3 |
1.3 |
|
|
White Wagtail |
Motacilla alba |
Y |
- |
4 |
6.8 |
ü |
|
Collared Crow |
Corvus torquatus |
Y |
LC |
2 |
2.0 |
ü |
|
|
|
|
No. of species recorded: |
18 |
|
|
Note:
(1) Conservation status
follows that of Fellowes et al.
(2002) and BirdLife International listing (2011)
(2) Indicates number of
surveys recorded within the reporting period.
(3) Refers to the mean number
of individuals recorded in the reporting period (excluding the WRA).
(4) Follows HK bird list (dated 2015-4-20).
Table I2: Summary of bird species of conservation importance and/or wetland-dependence recorded in the WRA
|
Species
Name(4) |
Scientific
Name(4) |
Wetland
Dependence |
Conservation
Status(1) |
Nov 2015 Occurrence(2) |
Nov 2015 Mean(3) |
Records outside
surveys |
|
Little Grebe |
Tachybaptus ruficollis |
Y |
LC |
4 |
2.3 |
ü |
|
Grey Heron |
Ardea cinerea |
Y |
PRC |
4 |
1.3 |
ü |
|
Great Egret |
Ardea alba |
Y |
PRC, (RC) |
1 |
0.3 |
|
|
Little Egret |
Egretta garzetta |
Y |
PRC, (RC) |
4 |
2.3 |
ü |
|
Chinese Pond Heron |
Ardeola bacchus |
Y |
PRC, (RC) |
3 |
3.3 |
ü |
|
Yellow Bittern |
Ixobrychus sinensis |
Y |
LC |
1 |
0.3 |
ü |
|
Black Kite |
Milvus migrans |
Y |
RC |
1 |
0.3 |
ü |
|
Greater Spotted Eagle |
Clanga clanga |
Y |
GC |
1 |
0.3 |
|
|
Eastern Buzzard |
Buteo japonicus |
Y |
- |
1 |
0.3 |
|
|
Pheasant-tailed Jacana |
Hydrophasianus chirurgus |
Y |
LC |
- |
- |
ü |
|
Black-winged Stilt |
Himantopus himantopus |
Y |
(RC) |
2 |
0.8 |
|
|
Green Sandpiper |
Tringa ochropus |
Y |
- |
2 |
0.8 |
|
|
Common Sandpiper |
Actitis hypoleucos |
Y |
- |
1 |
0.3 |
ü |
|
Pied Kingfisher |
Ceryle rudis |
Y |
(LC) |
1 |
0.3 |
|
|
White-throated Kingfisher |
Halcyon smyrnensis |
Y |
LC |
1 |
0.3 |
|
|
Common Kingfisher |
Alcedo atthis |
Y |
- |
3 |
1.5 |
ü |
|
Eastern Yellow Wagtail |
Motacilla tschutschensis |
Y |
- |
- |
- |
ü |
|
White Wagtail |
Motacilla alba |
Y |
- |
2 |
0.8 |
ü |
|
|
|
|
No. of species recorded: |
18 |
|
|
Note:
(1) Conservation status
follows that of Fellowes et al.
(2002) and BirdLife International listing (2011)
(2) Indicates number of
surveys recorded within the reporting period.
(3) Refers to the mean
number of individuals recorded in the reporting period at WRA.
(4) Follows HK bird list (dated 2015-4-20).
Table I3: Summary of bird species recorded in the Survey Area (excluding the WRA) during the reporting month
|
Species
Name(2) |
Scientific
Name(2) |
Wetland
Dependence |
Conservation
Status(1) |
|
Little Grebe |
Tachybaptus ruficollis |
Y |
LC |
|
Great Cormorant |
Phalacrocorax carbo |
Y |
PRC |
|
Grey Heron |
Ardea cinerea |
Y |
PRC |
|
Great Egret |
Ardea alba |
Y |
PRC, (RC) |
|
Little Egret |
Egretta garzetta |
Y |
PRC, (RC) |
|
Chinese Pond Heron |
Ardeola bacchus |
Y |
PRC, (RC) |
|
Black Kite |
Milvus migrans |
Y |
RC |
|
Eastern Buzzard |
Buteo japonicus |
Y |
- |
|
White-breasted Waterhen |
Amaurornis phoenicurus |
Y |
- |
|
Common Moorhen |
Gallinula chloropus |
Y |
- |
|
Green Sandpiper |
Tringa ochropus |
Y |
- |
|
Common Sandpiper |
Actitis hypoleucos |
Y |
- |
|
Eurasian Collared Dove |
Streptopelia decaocto |
N |
- |
|
Spotted Dove |
Spilopelia chinensis |
N |
- |
|
Greater Coucal# |
Centropus sinensis |
N |
- |
|
Pied Kingfisher |
Ceryle rudis |
Y |
(LC) |
|
White-throated Kingfisher |
Halcyon smyrnensis |
Y |
LC |
|
Common Kingfisher |
Alcedo atthis |
Y |
- |
|
Eurasian Wryneck |
Jynx torquilla |
N |
- |
|
Barn Swallow |
Hirundo rustica |
N |
- |
|
Eastern Yellow Wagtail |
Motacilla tschutschensis |
Y |
- |
|
White Wagtail |
Motacilla alba |
Y |
- |
|
Chinese Bulbul |
Pycnonotus sinensis |
N |
- |
|
Long-tailed Shrike |
Lanius schach |
N |
- |
|
Oriental Magpie Robin |
Copsychus saularis |
N |
- |
|
Stejneger's Stonechat |
Saxicola stejnegeri |
N |
- |
|
Masked Laughingthrush |
Garrulax perspicillatus |
N |
- |
|
Yellow-bellied Prinia |
Prinia flaviventris |
N |
- |
|
Plain Prinia |
Prinia inornata |
N |
- |
|
Scaly-breasted Munia |
Lonchura punctulata |
N |
- |
|
Eurasian Tree Sparrow |
Passer montanus |
N |
- |
|
Black-collared Starling |
Gracupica nigricollis |
N |
- |
|
Common Myna |
Acridotheres tristis |
N |
- |
|
Crested Myna |
Acridotheres cristatellus |
N |
- |
|
Azure-winged Magpie |
Cyanopica cyanus |
N |
- |
|
Eurasian Magpie |
Pica pica |
N |
- |
|
Collared Crow |
Corvus torquatus |
Y |
LC |
|
|
No. of species recorded: |
37 |
|
Note:
(1) Conservation status follows that of Fellowes et al. (2002) and BirdLife International listing (2011).
(2) follows HK bird list (dated 2015-4-20)
# Greater Coucal is listed as vulnerable (VU) in China Red Data Book and it is protected under terrestrial wildlife state protection (category II).
Table I4: Summary of bird species recorded in the WRA during the reporting month
|
Species
Name(2) |
Scientific
Name(2) |
Wetland
Dependence |
Conservation
Status(1) |
|
Little Grebe |
Tachybaptus ruficollis |
Y |
LC |
|
Grey Heron |
Ardea cinerea |
Y |
PRC |
|
Great Egret |
Ardea alba |
Y |
PRC, (RC) |
|
Little Egret |
Egretta garzetta |
Y |
PRC, (RC) |
|
Chinese Pond Heron |
Ardeola bacchus |
Y |
PRC, (RC) |
|
Yellow Bittern |
Ixobrychus sinensis |
Y |
LC |
|
Black Kite |
Milvus migrans |
Y |
RC |
|
Greater Spotted Eagle |
Clanga clanga |
Y |
GC |
|
Eastern Buzzard |
Buteo japonicus |
Y |
- |
|
Pheasant-tailed Jacana |
Hydrophasianus chirurgus |
Y |
LC |
|
Black-winged Stilt |
Himantopus himantopus |
Y |
(RC) |
|
Green Sandpiper |
Tringa ochropus |
Y |
- |
|
Common Sandpiper |
Actitis hypoleucos |
Y |
- |
|
Spotted Dove |
Spilopelia chinensis |
N |
- |
|
Greater Coucal |
Centropus sinensis |
N |
- |
|
Pied Kingfisher |
Ceryle rudis |
Y |
(LC) |
|
White-throated Kingfisher |
Halcyon smyrnensis |
Y |
LC |
|
Common Kingfisher |
Alcedo atthis |
Y |
- |
|
Barn Swallow |
Hirundo rustica |
N |
- |
|
Eastern Yellow Wagtail |
Motacilla tschutschensis |
Y |
- |
|
White Wagtail |
Motacilla alba |
Y |
- |
|
Red-whiskered Bulbul |
Pycnonotus jocosus |
N |
- |
|
Chinese Bulbul |
Pycnonotus sinensis |
N |
- |
|
Long-tailed Shrike |
Lanius schach |
N |
- |
|
Oriental Magpie Robin |
Copsychus saularis |
N |
- |
|
Daurian Redstart |
Phoenicurus auroreus |
N |
- |
|
Stejneger's Stonechat |
Saxicola stejnegeri |
N |
- |
|
Masked Laughingthrush |
Garrulax perspicillatus |
N |
- |
|
Dusky Warbler |
Phylloscopus fuscatus |
N |
- |
|
Yellow-bellied Prinia |
Prinia flaviventris |
N |
- |
|
Plain Prinia |
Prinia inornata |
N |
- |
|
Scaly-breasted Munia |
Lonchura punctulata |
N |
- |
|
Eurasian Tree Sparrow |
Passer montanus |
N |
- |
|
Black-collared Starling |
Gracupica nigricollis |
N |
- |
|
Crested Myna |
Acridotheres cristatellus |
N |
- |
|
|
No. of species recorded: |
35 |
|
Note:
(1) Conservation status
follows that of Fellowes et al.
(2002) and BirdLife International listing (2011)
(2) Follows HK bird list
(dated 2015-4-20)
Table J1: Summary of herpetofauna monitoring in the Survey Area (excluding the WRA)
|
Species Name |
Scientific Name |
Conservation Status(1) |
Nov 2015 Occurrence(2) |
November 2015 Mean(3) |
Records Outside Surveys |
|
Amphibian |
No. of species recorded: |
|
0 |
||
|
(No
records in Nov 2015) |
|
|
|
|
|
|
Species Name |
Scientific Name |
Conservation Status(1) |
Nov 2015 Occurrence(2) |
Nov 2015 Mean(3) |
Records Outside Surveys |
|
Reptile |
No. of species recorded: |
|
0 |
||
|
(No records in Nov 2015) |
|
|
|
|
|
Note:
(1) Conservation status follows that of Fellowes et al. (2002), Chan et al. (2005) and Karsen et al. (1998).
(2) Indicates number of surveys recorded within the reporting period.
(3) Refers to the mean number of individuals recorded in the reporting period (excluding the WRA).
Table J2: Summary of herpetofauna monitoring in the WRA
|
Species Name |
Scientific Name |
Conservation Status(1) |
Nov 2015 Occurrence(2) |
Nov 2015 Mean(3) |
Records Outside Surveys |
|
Amphibian |
No. of species recorded: |
|
0 |
||
|
(No records in Nov 2015) |
|
|
|
|
|
|
Species
Name |
Scientific Name |
Conservation Status(1) |
Nov 2015 Occurrence(2) |
Nov 2015 Mean(3) |
Records Outside Surveys |
|
Reptile |
No. of species recorded: |
|
0 |
||
|
(No records in Nov 2015) |
|
|
|
|
|
Note:
(1) Conservation status follows that of Fellowes et al. (2002), Chan et al. (2005) and Karsen et al. (1998).
(2) Indicates number of surveys recorded within the reporting period.
(3) Refers to the mean number of individuals recorded in the reporting period in the WRA.
Table J3: Summary of mammal monitoring in the Survey Area (excluding the WRA)
|
Species Name |
Scientific Name |
Conservation Status(1) |
Nov 2015 Occurrence(2) |
Nov 2015 Max(3) |
Records Outside Surveys |
|
Mammal |
No. of species recorded: |
|
0 |
||
|
(No records in Nov 2015) |
|
|
|
|
|
Note:
(1) Conservation status follows that of Fellowes et al. (2002) and Shek (2006).
(2) Indicates number of surveys recorded within the reporting period.
(3) Refers to the maximum number of individuals recorded in the reporting period (excluding the WRA).
Table J4: Summary of mammal monitoring in the WRA
|
Species Name |
Scientific Name |
Conservation Status(1) |
Nov 2015 Occurrence(2) |
Nov 2015 Max(3) |
Records Outside Surveys |
|
Mammal |
No. of species recorded: |
|
0 |
||
|
(No records in Nov 2015) |
|
|
|
|
|
Note:
(1) Conservation status follows that of Fellowes et al. (2002) and Shek (2006).
(2) Indicates number of surveys recorded within the reporting period.
(3) Refers to the maximum number of individuals recorded in the reporting period at WRA.
Table J5: Summary of dragonflies (odonata) and butterfly monitoring in the Survey Area (excluding the WRA)
|
Species Name |
Scientific Name |
Conservation Status(1) |
Nov 2015 Occurrence(2) |
Nov 2015 Mean(3) |
|
Odonata |
No. of species recorded: |
|
0 |
|
|
(No records in Nov 2015) |
|
|
|
|
|
Species Name |
Scientific Name |
Conservation Status(1) |
Nov 2015 Occurrence(2) |
Nov 2015 Mean(3) |
|
Butterfly |
No. of species recorded: |
|
0 |
|
|
(No records in Nov 2015) |
|
|
|
|
Note:
(1) Conservation status follows that of Fellowes et al. (2002), Lo & Hui (2004), Tam et al. (2011) and Young & Yiu (2002).
(2) Indicates number of surveys recorded within the reporting period.
(3) Refers to the mean number of individuals recorded in the reporting period (excluding the WRA).
Table J6: Summary of dragonflies (odonata) and butterfly monitoring in the WRA
|
Species Name |
Scientific Name |
Conservation Status(1) |
Nov 2015 Occurrence(2) |
Nov 2015 Mean(3) |
|
Odonata |
No. of species recorded: |
|
0 |
|
|
(No
records in Nov 2015) |
|
|
|
|
|
Species
Name |
Scientific Name |
Conservation Status(1) |
Nov 2015 Occurrence(2) |
Nov 2015 Mean(3) |
|
Butterfly |
No. of species recorded: |
|
7 |
|
|
Blue Spotted Crow |
Euploea midamus |
- |
1 |
1.0 |
|
Common Grass Yellow |
Eurema hecabe |
- |
1 |
7.0 |
|
Common Tiger |
Danaus genutia |
- |
1 |
1.0 |
|
Lemon Emigrant |
Catopsilia pomona |
- |
1 |
1.0 |
|
Long-tailed Blue |
Lampides boeticus |
- |
1 |
4.0 |
|
Red-base Jezebel |
Delias pasithoe |
- |
1 |
1.0 |
|
Slate Flash |
Rapala manea |
- |
1 |
1.0 |
Note:
(1) Conservation status follows that of Fellowes et al. (2002), Lo & Hui (2004), Tam et al. (2011) and Young & Yiu (2002).
(2) Indicates number of surveys recorded within the reporting period.
(3) Refers to the mean number of individuals recorded in the reporting period in the WRA.
Table K1. Water quality at WRA during the reporting month
|
Cell No. |
Temp. (ºC) |
pH |
Salinity (ppt) |
Turbidity (NTU) |
DO (mg/L) |
Water Level (cm) |
|
1 |
20.4 |
8.54 |
0.61 |
6.8 |
5.7 |
170 |
|
2 |
20.6 |
8.27 |
0.54 |
6.6 |
5.1 |
150 |
|
3 |
20.6 |
8.30 |
0.55 |
6.3 |
5.9 |
160 |
|
4 |
20.5 |
8.32 |
0.62 |
7.1 |
4.9 |
150 |
Note: Values highlighted in bold indicate that action level is reached; whereas values in bold and underline indicate that limit level is reached.
Air Quality – Recommended Mitigation Measures
|
Air Quality Mitigation Measures during construction |
Implementation Status |
|
·
access roads
should be sprayed with water or dust suppression chemical to maintain the
entire road surface wet or paved; |
ü |
|
·
every stock of
more than 20 bags of cement or dry PFA should be covered entirely by
impervious sheeting or placed in an area sheltered on the top and the 3
sides; |
N/A |
|
·
de-bagging,
batching or mixing process should be carried out in sheltered areas during
the use of bagged cement; |
N/A |
|
·
use of
effective dust screens, sheeting or netting to be provided to enclose dry
scaffolding which may be provided from the ground floor level of the building
or if a canopy is provided at the first floor level, from the first floor
level, up to the highest level (maximum four floors for this Project) of the
scaffolding where scaffolding is erected around the perimeter of a building
under construction; |
N/A |
|
·
dump trucks for
material transport should be totally enclosed using impervious sheeting; |
ü |
|
·
any excavated
dusty materials or stockpile of dusty materials should be covered entirely by
impervious sheeting or sprayed with water so as to maintain the entire
surface wet, and recovered or backfilled or reinstated within 24 hours of the
excavation or unloading; |
ü |
|
·
dusty materials
remaining after a stockpile is removed should be wetted with water; |
ü |
|
·
the area where vehicle
washing takes place and the section of the road between the washing
facilities and the exit point should be paved with e.g. concrete, bituminous
materials or hardcore or similar; |
ü |
|
·
the portion of road
leading only to a construction site that is within 30m of a designated
vehicle entrance or exit should be kept clear of dusty materials; |
ü |
|
·
stockpile of
dusty materials to be either covered entirely by impervious sheeting, placed
in an area sheltered on the top and the 3 sides; or sprayed with water so as
to maintain the entire surface wet; |
ü |
|
·
all dusty
materials to be sprayed with water prior to any loading, unloading or
transfer operation so as to maintain the dusty material wet; |
ü |
|
·
vehicle speed
to be limited to 10 kph except on completed access roads; |
ü |
|
·
every vehicle
should be washed to remove any dusty materials from its body and wheels
before leaving the construction sites; |
ü |
|
·
the load of dusty
materials carried by vehicle leaving a construction site should be covered
entirely by clean impervious sheeting to ensure that the dusty materials do
not leak from the vehicle; |
ü |
|
·
the working
area of excavation should be sprayed with water immediately before, during
and immediately after (as necessary) the operations so as to maintain the
entire surface wet; |
ü |
|
Odour mitigation measures |
|
|
·
all malodorous
excavated material should be placed as far as possible from any ASRs; |
N/A |
|
·
the stockpiled
malodorous material should be removed from site as soon as possible; and |
N/A |
|
·
the stockpiled
malodorous material should be covered entirely by plastic tarpaulin sheets. |
N/A |
Noise – Recommended Mitigation Measures
|
Noise Mitigation Measures during construction |
Implementation Status |
|
·
only
well-maintained plant should be operated on-site and plant should be serviced
regularly during the construction works; |
ü |
|
·
machines and plant
that may be in intermittent use should be shut down between work periods or
should be throttled down to a minimum; |
ü |
|
·
plant known to
emit noise strongly in one direction should, where possible, be orientated to
direct noise away from the NSRs; |
ü |
|
·
silencers or
mufflers on construction equipment should be utilised and should be properly
maintained during the construction period; |
ü |
|
·
mobile plant
should be sited as far away from NSRs as possible; |
ü |
|
·
material stockpiles
and other structures should be effectively utilised, where practicable, to
screen noise from on-site construction activities; |
ü |
|
·
air compressor
and hand-held breaker should be fitted with valid noise emission labels
during operation; and |
N/A |
|
·
The Contractor
shall at all times comply with all current statutory environmental
legislation. |
ü |
|
Selection of quieter plant and working
methods The Contractor shall obtain particular models of plant that are quieter
than standards given in GW-TM. The
list of assumed quieter plants can be found in the Table 4–14 of the EIA report. The Contractor shall select from
the available models achieving the assumed sound levels while making
reference to the GW-TM and BS5228: Part 1: 1997 |
ü |
|
Use of Noise Barriers Noise barriers are proposed along the site boundary to block the
direct line of sight from the most affected NSRs to the major noise
contribution construction phases. The height of the noise barriers ranged
from 9-10m. The noise barriers shall
be built before the commencement of construction works in order to ensure
protection to nearby NSRs. The noise
barrier should have a surface density of at least 10kg/m2 or
material providing equivalent transmission loss. The noise barriers and hoardings should
have no gaps and openings to avoid noise leakage. |
ü |
Water Quality – Recommended Mitigation Measures
|
Water Quality Mitigation Measures during construction |
Implementation Status |
|
·
The site should be confined to avoid silt
runoff to the site. |
ü |
|
·
No discharge of silty water into the storm
drain and drainage channel within and the vicinity of the site. |
ü |
|
·
Any soil contaminated with chemicals/oils shall
be removed from site and the void created shall be filled with suitable
materials. |
ü |
|
·
Stockpiles to be covered by tarpaulin to avoid
spreading of materials during rainstorms; |
N/A |
|
·
Suitable containers shall be used to hold the chemical
wastes to avoid leakage or spillage during storage, handling and transport; |
ü |
|
·
Chemical waste containers shall be labelled
with appropriate warning signs in English and Chinese to avoid
accidents. there shall also be clear
instructions showing what action to take in the event of an accidental; |
ü |
|
·
Storage areas shall be selected at safe
locations on site and adequate space shall be allocated to the storage area; |
ü |
|
·
Any construction plant which causes pollution to
the water system due to leakage of oil or fuel shall be removed off-site
immediately; |
N/A |
|
·
Spillage or leakage of chemical waste to be
controlled by using suitable absorbent materials; |
N/A |
|
·
Chemicals will always be stored on drip trays
or in bunded areas where the volume is 110% of the stored volume; |
ü |
|
·
Regular clearance of domestic waste generated
in the temporary sanitary facilities to avoid waste water spillage. |
ü |
|
·
Temporary sanitary facilities to be provided for
on-site workers during construction. |
ü |
|
·
Temporary drainage channel and associated facilities will be provided
to collect the surface runoff generated within the Project Area during the
construction phase. |
ü |
|
·
Sandbags or silt traps will need to be placed to avoid silt runoff to
the drainage channel draining the water in the northern ditch. Draining of the ditches should avoid rainy
weather. |
ü |
|
·
Excavated soil which
needs to be temporarily stockpiled should be stored in a specially designated
area and provided with a tarpaulin cover to avoid runoff into the drainage
channels. |
ü |
Waste Management
– Recommended Mitigation Measures
|
Waste Management Mitigation Measures during construction |
Implementation Status |
|
Site Clearance Waste ·
The major
construction works of Wo Shang Wai is in the development of residential
buildings and other associated facilities (club house, tennis courts, etc).
The amount of site clearance works will be limited with the exception of the
excavated materials. The thin layer of vegetation removed can be stored and
reused for landscaping. |
ü |
|
Excavated Materials The intention is to maximize the reuse of the excavated materials
on-site as fill materials. |
ü |
|
Imported Filling Material The excavated/imported filling material may
have to be temporarily stockpiled on-site for the construction of road embankment
and foundation of viaduct substructure.
Control measures should be taken at the stockpiling area to prevent
the generation of dust and pollution of stormwater channels. However, to eliminate the risk of blocking
drains in the wet season, it is recommended that stockpiling of excavated
materials at during wet season should be avoided as far as practicable. |
ü |
|
Construction and
Demolition Materials Careful design, planning and good site management can minimise
over-ordering and generation of waste materials such as concrete, mortars and
cement grouts. The design of formwork
should maximise the use of standard wooden panels so that high reuse levels
can be achieved. Alternatives such as
steel formwork of plastic facing should be considered to increase the
potential for reuse. |
ü |
|
The Contractor should reuse any C&D material on-site. C&D
waste should be segregated and stored in different containers to other wastes
to encourage the re-use or recycling of materials and their proper disposal. |
ü |
|
Chemical
Waste For those processes
which generate chemical waste, it may be possible to find alternatives which
generate reduced quantities or even no chemical waste, or less dangerous
types of chemical waste. |
N/A |
|
Containers used for the
storage of chemical wastes should: |
|
|
·
be suitable for
the substance they are holding, resistant to corrosion, maintained in a good
condition, and securely closed: |
ü |
|
·
have a capacity
of less than 450 litres unless the specification have been approved by the
EPD; and |
ü |
|
·
display a label
in English and Chinese in accordance with instructions prescribed in Schedule
2 of the Regulations, |
ü |
|
The storage area for
chemical wastes should: |
|
|
·
be clearly
labelled and used solely for the storage of chemical waste; |
ü |
|
·
be enclosed on
at least 3 sides; |
ü |
|
·
have an
impermeable floor and bunding, of capacity to accommodate 110% of the volume
of the largest container or 20% by volume of the chemical waste stored in
that area whichever is the greatest; |
ü |
|
·
have adequate
ventilation; |
ü |
|
·
be covered to prevent
rainfall entering (water collected within the bund must be tested and
disposed as chemical waste if necessary); and |
ü |
|
·
be arranged so
that incompatible materials are adequately separated. |
ü |
|
Disposal of chemical
waste should: |
|
|
·
be via a
licensed waste collector; and |
N/A |
|
·
be to a
facility licensed to receive chemical waste, such as the Chemical Waste
Treatment Facility which also offers a chemical waste collection service and
can supply the necessary storage containers, or |
N/A |
|
·
to be reuser of
the waste, under approval from the EPD. |
N/A |
|
General Refuse Should be stored in enclosed bins or compaction units separate from
C&D and chemical wastes. The Contractor
should employ a reputable waste collector to remove general refuse from the
site, separate from C&D and chemical wastes, on a regular basis to
minimise odour, pest and litter impacts.
Burning of refuse on construction sites is prohibited by law. |
ü |
|
Disposal of Excavated Sediment at Sea |
|
|
The requirements and procedures for excavated sediment disposal are
specified under the ETWB TCW No. 34/2002 and PNAP 252. The management of the excavation, use and disposal
of sediment is monitored by Fill Management Committee, whilst the licensing
of marine dumping is the responsibility of the Director of Environmental
Protection (DEP). |
N/A |
|
The excavated sediment would be loaded onto barges or other
appropriate vessel and transported to the designated marine disposal
site. Category L sediment and Category
M sediment passing the biological test would be suitable for disposal at a
gazetted open sea disposal ground.
Category M sediment failing the biological test and Category H
sediment passing the biological test would require confined marine disposal. |
N/A |
|
During transportation and disposal of the dredged sediment, the
following measures should be taken to minimize potential impacts on water
quality: - |
N/A |
|
·
Bottom opening transport vessels should be
fitted with tight fitting seals to prevent leakage of material. Excess
material should be cleaned from the decks and exposed fittings of vessels
before the vessel is moved. |
N/A |
|
·
Monitoring of the barge loading should be
conducted to ensure that loss of material does not take place during
transportation. Transport barges or vessels should be equipped with automatic
self-monitoring devices as specified by the DEP. |
N/A |
Ecology – Recommended
Mitigation Measures
|
Ecology Mitigation Measures during construction |
Implementation Status |
|
Clear Definition of Site Limit |
|
|
Clear
definition of the site limit should be provided in order to minimize and confine
the disturbance during the construction period, especially the northern limit
of the Site which is adjacent to fishponds within the Conservation Area (CA)
zone and are considered to be ecological sensitive receivers. |
ü |
|
During
wetland construction stage the WRA boundary will be delineated using a
temporary hoarding in order to reduce disturbance to off-site habitats and
wildlife. During the establishment
phase this hoarding will be replaced with a 1 m high chain-link fence in
order to reduce disturbance to the WRA through access by humans and dogs, and
a hoarding will be established around the residential construction site. |
N/A (WRA construction completed) |
|
Dust and Noise
Suppression and Avoidance of Water Pollution |
|
|
Good site practices
of dust and noise suppression should be strictly implemented to ensure that
disturbance is minimized to acceptable levels. Mitigation measures for the
off-site disturbance impacts on the fishponds in the CA include hoarding at
the northern site boundary during construction of the WRA to reduce noise and
dust impacts to the adjacent habitats. Through the use of quieter plant and
temporary/movable noise barriers, the noise level would be reduced
significantly to an acceptable level. Hoarding at the northern boundary
should be replaced with a 1 m high chain-link fence following construction
and the WRA will then act as a buffer between the existing wetland areas and
the residential part of the site until construction is completed. Hoarding will be retained between the WRA
and ongoing construction work to avoid visual disturbance and reduce noise
and dust emissions. Pollution of
watercourses and sedimentary runoff will be minimized by good site practice,
especially the containment of water and sediment within the site for removal. These standard
noise and air and water quality site practices are considered to be effective
measures for minimizing the disturbance impact during the construction
period. |
ü |
|
Planning of
Construction Schedule |
|
|
The construction of
the proposed project should be scheduled in phases. Because mitigation is
preferably carried out in advance of the main works rather than after the
completion of works, the construction of the WRA will commence at the start
of the project. Construction work
within the WRA is scheduled to take place in a single wet season, followed by
1.5 years of wetland establishment. During the wetland establishment period
no noisy work will be undertaken within the WRA to minimize the disturbance
to off-site habitats and wildlife. |
N/A (WRA construction completed) |
|
Reusing Onsite
Materials |
|
|
Soil and plants on-site should
be reused (e.g. used as fill material) as far as practical. Stock piles of these
reusable materials should be stored in an appropriate area on-site. In
particular, the re-use of the wetland soils and topsoil should be considered. |
ü |
|
Construction of the
Wetland Restoration Area The WRA will be
operational within 2.5 yrs from the commencement of construction (1 year for
site formation and 1.5 years for establishment) and will compensate for the
predicted ecological impacts of the proposed development. |
ü |
Landscape and
Visual – Recommended Mitigation Measures
|
Landscape and Visual Mitigation Measures during construction |
Implementation Status |
|
CM1 - The construction area and contractor’s temporary works areas
should be minimised to avoid impacts on adjacent landscape. |
ü |
|
CM2 - Screening of construction works by hoarding / noise barriers. |
ü (Appendix M Photo 1,2*) |
|
CM3 - Reduction of construction period to practical minimum. |
ü |
|
CM4 - Topsoil, where identified, should be stripped and stored for re-use
in the construction of the soft landscape works, where the soil material
meets acceptable criteria and where practical. The Contract Specification shall include
storage and reuse of topsoil as appropriate. |
ü |
|
CM5 - Hydroseeding or sheeting of soil stockpiles with visually
unobtrusive material (in earth tone). |
ü |
|
CM6 – Advance screen planting of noise barriers |
ü (Appendix M Photo 3*) |
|
CM7 - Control night-time lighting and glare by hooding all lights. |
N/A |
|
CM8 - Ensure no run-off into streams adjacent to the Project Area. |
ü |
|
CM9 - Protection of existing trees on boundary of site shall be
carefully protected during construction.
Detailed Tree Protection Specification shall be provided in the
Contract Specification. Under this specification, the Contractor shall be
required to submit, for approval, a detailed working method statement for the
protection of trees prior to undertaking any works adjacent to all retained
trees, including trees in contractor’s works areas. (Tree protection measures will be detailed
at S16 and Tree Removal Application stage). |
ü |
|
CM10 - Trees unavoidably affected by the works shall be transplanted
where practical. Trees should be
transplanted straight to their destinations and not held in a nursery. A detailed Tree Transplanting Specification
shall be provided in the Contract Specification, if applicable. Sufficient
time for necessary tree root and crown preparation periods shall be allowed
in the project programme. |
ü |
Legend:
ü Implemented
X Not implemented
P Partially implemented
N/A Not applicable
* Photos are in Appendix M