
Content
Chapter Title Page
List of 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
List of 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, and Insects Surveys conducted
Appendix K Summary of Monitoring of Water
Quality associated with Ecological Monitoring conducted
Appendix L Environmental
Mitigation Measures - Implementation Status
Executive Summary
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 19th
EM&A report submitted under the Condition 4.5 of Environmental Permit No.
EP-311/2008/B. This report summarises the findings on EM&A during the
period from 1 November to 30 November 2011.
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.
Exceedances of pH, DO, turbidity and SS were
observed at MP1 to MP6 in November 2011.
Exceedances of pH were often observed at MP1 to MP3 and a few times at MP4 to
MP6. DO
were exceeded frequently at MP3 and exceeded several times at MP5 to MP6. Turbidity
and/or SS exceedances were recorded on several monitoring dates on MP3 and MP4
and one monitoring date at
MP5 and MP6 respectively. 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 affect the adjacent
environments, such as natural variations, pond fish culture activities, heavy
rainfall, and microbe growth (including algae), the exceedances were considered
not due to construction works.
Implementation of mitigation
measures
Site audits were carried out on
2, 11, 18 and 25 November 2011 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
On
15 November 2011, a complaint was lodged with the Environmental Protection
Department (EPD) on noise impact from MTR construction site near Royal Palms,
Yuen Long. The complaint was related to general construction noise at around
8pm. The complaint was subsequently received by MMHK from EPD on the same day.
Investigation results of the complaint showed that this project site is not the
cause of the complaint. Therefore, no further mitigation measure is required to be recommended.
On
25 November 2011, a complaint was lodged with the Environmental Protection
Department (EPD) on noise impact from MTR construction site near Mai Po Tsuen,
Yuen Long. The complaint was related to general construction noise at after
10pm. The complaint was subsequently received by MMHK from EPD on 1 December
2011. Investigation results of the complaint showed that this project site is
not the cause of the complaint. Therefore, no further mitigation measure is required to be recommended.
Record of Notification of summons
and successful prosecution
There was no
record of Notification of summons and successful prosecution in the reporting
month.
Reporting Changes
There was no
reporting change in the reporting month.
Future Key Issues
The
major site works to be commissioned in the coming three months include band
drain installation (to be completed by end of December 2011), Trial
Embankment
for Ground Improvement installation (to be completed by end of December
2011) and
Site Formation (Filling). Potential environmental impacts due to the construction
activities, including air quality, noise, water quality, ecology and landscape
and visual, will be monitored.
Environmental mitigation measures will be
implemented on site as recommended and weekly site audits will be carried out
to ensure that the environmental conditions are acceptable.
In March 2005, the Project Proponent, Profit
Point Enterprises Limited, acquired the development site in Yuen Long at
Wo Shang Wai. An Environmental Impact Assessment (EIA) was carried out under
the EIA Ordinance (EIAO) since then and the Environmental Permit (EP-311/2008B)
for construction of the comprehensive development in Wo Shang Wai was granted
by EPD on 29 July 2010. 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.
Heng Shung Construction Co. Ltd. was commissioned as the Contractor for the Project. 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.
According to the EP Condition 4.5, the monthly EM&A Report shall be submitted to the Director within 2 weeks after the end of the reporting month. This report summarises the findings during the period from 1 November 2011 to 30 November 2011.
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 period, construction
works of the Project undertaken include:
¡
Band
drain installation;
¡
Trial
Embankment for Ground Improvement;
and
¡
Site
formation (Filling)
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:
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 WRA |
Wetland Restoration Area |
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 November 2011

2.
Impact Monitoring Methodology
|
For air
quality, construction noise and water quality, ecology,
landscape and visual monitoring methodology, including the monitoring
locations, monitoring equipments 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
4 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 |
|
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 |
24-hour
TSP Monitoring
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 2 meters separation from walls, parapets and penthouse was required for rooftop sampler.
· A minimum of 2 meters 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 2-month intervals.
· Calibration records for HVSs are shown in Appendix E.
1-hour
TSP Monitoring
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
· 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
4 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 |
Free-field |
|
NSR3 |
The monitoring station was located next to the
guard house at |
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
|
Monitoring locations |
Equipment Model |
|
|
Integrating Sound
Level Meter |
Calibrator |
|
|
NSR1 |
Rion NL-31 |
Rion NC-73 |
|
NSR3 |
||
|
NSR5 |
||
|
NSR7 |
||
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 0700 and 1900)
· 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,
3 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
6 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 Equipments 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 Equipments
|
Equipment |
Model |
Equipment /Serial Number |
|
Conductivity, Dissolved oxygen, pH, Salinity and Temperature Measuring Meter |
YSI Professional Plus |
10D101565 |
|
Turbidity Meter |
Hach 2100QIS |
11050C001264 |
|
Global Positioning System (GPS) |
Garmin eTrex
|
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 556 MPS 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 degree Celsius; and
· pH value of 0-14 with 0.1 as the base unit.
Turbidity
Measurement Instrument
Portable and weatherproof turbidity meter (HACH model 2100P) 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
A
hand-held GPS navigator (Garmin eTrex
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 4oC without being frozen), delivered to the laboratory,
and analysed as soon as possible after collection. Analysis was carried out in a
HOKLAS accredited laboratory.
Detection Limit
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
2 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 3 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 3 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 3m, 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 4oC. 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 equipments 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 WRA
|
|
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.
·
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:
Table 2.14: Proposed Construction Phase
Mitigation Measures
|
ID No. |
Landscape and Visual
Mitigation Measure |
|
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 Measure |
|
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 of 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. Min
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 2, 11, 18 and 25 November 2011 in
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.
Table 3.1: Summary
of 1-hour TSP monitoring results
|
Monitoring Date |
Start Time |
1-hr TSP (μg/m3) |
Range (μg/m3) |
Action Level (μg/m3) |
Limit Level (μg/m3) |
|||
|
1st Result |
2nd Result |
3rd Result |
||||||
|
ASR1 |
||||||||
|
02-Nov-11 |
08:58 |
160 |
159 |
157 |
84 - 160 |
378 |
500 |
|
|
08-Nov-11 |
08:33 |
92 |
90 |
89 |
||||
|
14-Nov-11 |
08:19 |
108 |
112 |
113 |
||||
|
18-Nov-11 |
08:49 |
86 |
86 |
84 |
||||
|
24-Nov-11 |
08:20 |
112 |
112 |
110 |
||||
|
30-Nov-11 |
08:34 |
107 |
108 |
108 |
||||
|
ASR2A |
||||||||
|
02-Nov-11 |
13:03 |
152 |
150 |
155 |
82 - 155 |
357 |
500 |
|
|
08-Nov-11 |
13:26 |
84 |
86 |
86 |
||||
|
14-Nov-11 |
12:50 |
102 |
100 |
105 |
||||
|
18-Nov-11 |
12:43 |
84 |
84 |
82 |
||||
|
24-Nov-11 |
12:59 |
111 |
114 |
112 |
||||
|
30-Nov-11 |
13:06 |
122 |
123 |
123 |
||||
|
ASR3 |
||||||||
|
02-Nov-11 |
12:49 |
157 |
157 |
155 |
86 - 157 |
358 |
500 |
|
|
08-Nov-11 |
12:49 |
88 |
87 |
86 |
||||
|
14-Nov-11 |
12:37 |
108 |
108 |
104 |
||||
|
18-Nov-11 |
12:59 |
87 |
87 |
89 |
||||
|
24-Nov-11 |
12:33 |
110 |
110 |
112 |
||||
|
30-Nov-11 |
12:49 |
109 |
120 |
120 |
||||
|
ASR4 |
||||||||
|
02-Nov-11 |
08:48 |
163 |
167 |
166 |
84 - 167 |
372 |
500 |
|
|
08-Nov-11 |
08:25 |
95 |
94 |
94 |
||||
|
14-Nov-11 |
08:43 |
118 |
120 |
117 |
||||
|
18-Nov-11 |
08:30 |
89 |
89 |
84 |
||||
|
24-Nov-11 |
08:13 |
112 |
112 |
116 |
||||
|
30-Nov-11 |
08:28 |
112 |
112 |
110 |
||||
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.
Table 3.2: Summary
of 24-hour TSP monitoring results
|
Monitoring Date |
Monitoring Results (μg/m3) |
Range (μg/m3) |
Action Level (μg/m3) |
Limit Level (μg/m3) |
|
ASR1 |
|
|
|
|
|
02-Nov-11 |
78 |
76 - 98 |
226 |
260 |
|
08-Nov-11 |
98 |
|||
|
14-Nov-11 |
78 |
|||
|
18-Nov-11 |
78 |
|||
|
24-Nov-11 |
76 |
|||
|
30-Nov-11 |
76 |
|||
|
ASR2A |
|
|
|
|
|
02-Nov-11 |
78 |
70 - 100 |
213 |
260 |
|
08-Nov-11 |
100 |
|||
|
14-Nov-11 |
86 |
|||
|
18-Nov-11 |
81 |
|||
|
24-Nov-11 |
77 |
|||
|
30-Nov-11 |
70 |
|||
|
ASR3 |
|
|
|
|
|
02-Nov-11 |
79 |
76 - 95 |
205 |
260 |
|
08-Nov-11 |
95 |
|||
|
14-Nov-11 |
85 |
|||
|
18-Nov-11 |
86 |
|||
|
24-Nov-11 |
76 |
|||
|
30-Nov-11 |
79 |
|||
|
ASR4 |
|
|
|
|
|
02-Nov-11 |
78 |
76 - 94 |
237 |
260 |
|
08-Nov-11 |
94 |
|||
|
14-Nov-11 |
89 |
|||
|
18-Nov-11 |
80 |
|||
|
24-Nov-11 |
76 |
|||
|
30-Nov-11 |
76 |
No exceedance of 1-hour and 24-hour TSP (Action or Limit Level) was recorded in the reporting period.
The weather conditions in the reporting period are provided in Appendix G.
The construction noise monitoring results are summarized in Table 3.3. Graphical plots of the monitoring data are shown in Appendix F.
Table 3.3: Summary
of Construction noise
monitoring results
|
Monitoring Date |
Start Time |
Mean & Range
of Noise Levels, dB(A) |
Limit Level for Leq
(dB) |
||
|
Leq |
L10 |
L90 |
|||
|
NSR1 |
|
|
|
|
> 75 |
|
02-Nov-11 |
13:16 |
58 |
60 |
54 |
|
|
08-Nov-11 |
13:39 |
57 |
60 |
54 |
|
|
14-Nov-11 |
13:05 |
55 |
58 |
52 |
|
|
24-Nov-11 |
13:02 |
56 |
58 |
53 |
|
|
30-Nov-11 |
13:11 |
56 |
58 |
48 |
|
|
NSR3 |
|
|
|
|
|
|
02-Nov-11 |
13:59 |
59 |
61 |
49 |
|
|
08-Nov-11 |
14:26 |
59 |
62 |
57 |
|
|
14-Nov-11 |
13:25 |
58 |
59 |
49 |
|
|
24-Nov-11 |
13:44 |
58 |
58 |
48 |
|
|
30-Nov-11 |
13:52 |
64 |
66 |
60 |
|
|
NSR5 |
|
|
|
|
|
|
02-Nov-11 |
08:55 |
57 |
56 |
55 |
|
|
08-Nov-11 |
08:29 |
59 |
60 |
57 |
|
|
14-Nov-11 |
08:47 |
59 |
62 |
56 |
|
|
24-Nov-11 |
08:16 |
58 |
59 |
56 |
|
|
30-Nov-11 |
08:31 |
62 |
66 |
59 |
|
|
NSR7 |
|
|
|
|
|
|
02-Nov-11 |
09:09 |
66 |
68 |
62 |
|
|
08-Nov-11 |
09:23 |
63 |
65 |
59 |
|
|
14-Nov-11 |
09:32 |
64 |
66 |
58 |
|
|
24-Nov-11 |
09:00 |
63 |
65 |
59 |
|
|
30-Nov-11 |
09:15 |
65 |
69 |
60 |
|
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.
Table 3.4: Summary of Water quality monitoring results
|
Monitoring
Date |
Temp (oC) |
pH |
Dissolved
Oxygen (mg/L) |
DOS (%) |
Turbidity
(NT) |
BOD
(mg/L) |
Suspended
Solids (mg/L) |
|
MP1 |
|
|
|
|
|
|
|
|
02/11/2011 |
25.6 |
7.6 |
4.2 |
53.1 |
28.1 |
3.5 |
24.5 |
|
04/11/2011 |
26.7 |
8.0 |
5.9 |
75.3 |
11.6 |
2 |
8 |
|
07/11/2011 |
26.3 |
7.7 |
3.1 |
40.1 |
37.0 |
2.5 |
24.5 |
|
09/11/2011 |
22.1 |
8.6 |
7.6 |
88.1 |
58.8 |
2.5 |
61.5 |
|
11/11/2011 |
23.0 |
8.4 |
5.2 |
60.1 |
93.1 |
3 |
79.5 |
|
14/11/2011 |
24.3 |
7.7 |
4.9 |
59.3 |
63.5 |
4 |
52.5 |
|
16/11/2011 |
24.5 |
7.7 |
4.5 |
55.9 |
18.2 |
3 |
16 |
|
18/11/2011 |
24.8 |
8.1 |
5.8 |
71.4 |
42.2 |
4 |
42 |
|
21/11/2011 |
24.0 |
7.8 |
5.5 |
66.4 |
11.0 |
#DIV/0! |
8.5 |
|
23/11/2011 |
22.1 |
7.6 |
4.5 |
53.1 |
53.3 |
2.5 |
42 |
|
25/11/2011 |
22.5 |
8.0 |
6.3 |
72.5 |
94.2 |
9.5 |
101 |
|
28/11/2011 |
24.4 |
7.7 |
5.6 |
68.0 |
110.5 |
4 |
115 |
|
30/11/2011 |
25.0 |
7.8 |
8.6 |
106.5 |
56.5 |
11.5 |
49 |
|
|
|
|
|
|
|
|
|
|
Action Level |
- |
<5.5 or >7.5 |
<1.23 |
- |
>173 |
- |
>231 |
|
Limit Level |
- |
<4.0 or >8.0 |
<1.17 |
- |
>177 |
- |
>299 |
|
|
|
|
|
|
|
|
|
|
MP2 |
|
|
|
|
|
|
|
|
02/11/2011 |
25.8 |
7.6 |
4.0 |
49.3 |
20.8 |
3 |
18 |
|
04/11/2011 |
26.9 |
7.9 |
6.2 |
78.5 |
12.7 |
2 |
9 |
|
07/11/2011 |
26.4 |
7.6 |
3.3 |
44.0 |
35.6 |
2.5 |
21 |
|
09/11/2011 |
22.0 |
8.5 |
7.6 |
86.1 |
33.7 |
2 |
28.5 |
|
11/11/2011 |
23.1 |
8.3 |
4.8 |
56.1 |
92.3 |
2.5 |
85.5 |
|
14/11/2011 |
24.2 |
7.7 |
4.5 |
54.8 |
62.1 |
5 |
52.5 |
|
16/11/2011 |
24.7 |
7.7 |
4.1 |
50.9 |
33.8 |
4 |
34 |
|
18/11/2011 |
24.6 |
8.0 |
5.6 |
67.4 |
38.9 |
3 |
43 |
|
21/11/2011 |
24.5 |
8.0 |
5.5 |
66.2 |
9.3 |
#DIV/0! |
7 |
|
23/11/2011 |
22.3 |
7.6 |
4.1 |
48.1 |
59.3 |
2 |
41 |
|
25/11/2011 |
22.4 |
8.0 |
6.2 |
70.6 |
130.3 |
12.5 |
149 |
|
28/11/2011 |
23.8 |
7.9 |
6.9 |
81.2 |
91.0 |
7 |
113.5 |
|
30/11/2011 |
25.4 |
7.8 |
8.8 |
109.4 |
42.1 |
8 |
32 |
|
|
|
|
|
|
|
|
|
|
Action Level |
- |
<5.5 or >7.5 |
<1.04 |
- |
>132 |
- |
>170 |
|
Limit Level |
- |
<4.0 or >8.0 |
<0.89 |
- |
>163 |
- |
>209 |
|
|
|
|
|
|
|
|
|
|
MP3 |
|
|
|
|
|
|
|
|
02/11/2011 |
25.3 |
7.8 |
2.8 |
35.1 |
43.1 |
6 |
37.5 |
|
04/11/2011 |
26.8 |
7.8 |
3.0 |
38.2 |
39.4 |
5 |
31.5 |
|
07/11/2011 |
27.2 |
7.9 |
3.6 |
45.8 |
38.9 |
7 |
26.5 |
|
09/11/2011 |
23.2 |
7.5 |
4.5 |
53.1 |
72.1 |
4 |
62.5 |
|
11/11/2011 |
20.4 |
7.7 |
4.1 |
46.3 |
98.3 |
3.5 |
80 |
|
14/11/2011 |
23.3 |
7.5 |
3.2 |
36.6 |
78.1 |
6 |
63 |
|
16/11/2011 |
23.8 |
7.9 |
3.5 |
42.2 |
90.2 |
7.5 |
81.5 |
|
18/11/2011 |
24.1 |
7.7 |
3.2 |
39.4 |
60.5 |
8 |
53 |
|
21/11/2011 |
23.6 |
7.9 |
2.9 |
35.5 |
69.8 |
8 |
68.5 |
|
23/11/2011 |
21.7 |
7.9 |
3.7 |
42.2 |
61.9 |
7.5 |
57.5 |
|
25/11/2011 |
21.1 |
7.8 |
4.0 |
43.7 |
92.9 |
7.5 |
86 |
|
28/11/2011 |
23.4 |
7.3 |
5.2 |
60.8 |
39.7 |
2 |
40.5 |
|
30/11/2011 |
26.3 |
8.1 |
7.9 |
96.9 |
56.5 |
9.5 |
47 |
|
|
|
|
|
|
|
|
|
|
Action Level |
- |
<5.5 or >7.5 |
<6.85 |
- |
>64 |
- |
>65 |
|
Limit Level |
- |
<4.0 or >8.0 |
<6.65 |
- |
>67 |
- |
>66 |
|
|
|
|
|
|
|
|
|
|
MP4 |
|
|
|
|
|
|
|
|
02/11/2011 |
24.8 |
7.7 |
5.6 |
67.9 |
45.5 |
10.5 |
39.5 |
|
04/11/2011 |
26.8 |
7.7 |
8.9 |
113.5 |
76.7 |
19 |
82.5 |
|
07/11/2011 |
26.5 |
7.8 |
5.1 |
65.2 |
39.4 |
5.5 |
29.5 |
|
09/11/2011 |
21.9 |
8.1 |
4.7 |
54.6 |
61.9 |
5 |
39 |
|
11/11/2011 |
20.0 |
8.3 |
6.4 |
71.3 |
54.7 |
4 |
35 |
|
14/11/2011 |
23.6 |
7.5 |
5.1 |
61.3 |
41.2 |
2.5 |
29 |
|
16/11/2011 |
23.3 |
7.8 |
4.9 |
59.3 |
33.7 |
4 |
18 |
|
18/11/2011 |
24.1 |
7.9 |
4.3 |
52.7 |
43.0 |
7.5 |
34 |
|
21/11/2011 |
23.1 |
7.8 |
4.6 |
55.1 |
65.7 |
4.5 |
55 |
|
23/11/2011 |
21.2 |
7.5 |
5.0 |
59.0 |
50.9 |
3.5 |
39 |
|
25/11/2011 |
20.7 |
7.5 |
4.8 |
55.0 |
31.4 |
3 |
23 |
|
28/11/2011 |
24.1 |
7.8 |
11.0 |
131.0 |
61.0 |
9.5 |
66.5 |
|
30/11/2011 |
24.9 |
8.0 |
10.7 |
132.4 |
113.4 |
27 |
90 |
|
|
|
|
|
|
|
|
|
|
Action Level |
- |
<5.5 or >7.5 |
<3.91 |
- |
>60 |
- |
>50 |
|
Limit Level |
- |
<4.0 or >8.0 |
<3.82 |
- |
>64 |
- |
>53 |
|
|
|
|
|
|
|
|
|
|
MP5 |
|
|
|
|
|
|
|
|
02/11/2011 |
24.5 |
7.3 |
4.1 |
50.8 |
36.8 |
4 |
27.5 |
|
04/11/2011 |
26.9 |
7.4 |
5.4 |
70.2 |
37.4 |
2.5 |
27.5 |
|
07/11/2011 |
27.2 |
7.4 |
6.5 |
82.7 |
51.2 |
4.5 |
34 |
|
09/11/2011 |
21.4 |
7.9 |
6.4 |
72.6 |
149.0 |
3 |
84.5 |
|
11/11/2011 |
19.9 |
7.6 |
5.7 |
63.1 |
76.3 |
5 |
42.5 |
|
14/11/2011 |
23.7 |
7.4 |
4.4 |
53.2 |
36.3 |
#DIV/0! |
27.5 |
|
16/11/2011 |
23.4 |
7.5 |
3.8 |
46.2 |
56.7 |
3.5 |
36 |
|
18/11/2011 |
24.2 |
7.5 |
4.3 |
52.2 |
40.3 |
4 |
30.5 |
|
21/11/2011 |
22.9 |
7.5 |
5.4 |
62.8 |
41.0 |
2 |
30 |
|
23/11/2011 |
21.0 |
7.5 |
5.5 |
63.1 |
56.0 |
3.5 |
46.5 |
|
25/11/2011 |
20.8 |
7.5 |
5.0 |
56.5 |
47.3 |
4 |
39 |
|
28/11/2011 |
23.0 |
7.4 |
7.3 |
86.6 |
28.1 |
4 |
26 |
|
30/11/2011 |
24.9 |
7.6 |
6.8 |
83.7 |
27.2 |
3 |
14.5 |
|
|
|
|
|
|
|
|
|
|
Action Level |
- |
<5.5 or >7.5 |
<4.13 |
- |
>81 |
- |
>66 |
|
Limit Level |
- |
<4.0 or >8.0 |
<3.87 |
- |
>84 |
- |
>69 |
|
|
|
|
|
|
|
|
|
|
MP6 |
|
|
|
|
|
|
|
|
02/11/2011 |
23.9 |
7.4 |
4.3 |
54.3 |
38.7 |
3 |
28 |
|
04/11/2011 |
26.5 |
7.4 |
5.3 |
67.3 |
38.0 |
3 |
31 |
|
07/11/2011 |
26.8 |
7.3 |
6.4 |
79.8 |
42.6 |
4 |
30.5 |
|
09/11/2011 |
21.0 |
8.0 |
6.1 |
68.0 |
153.5 |
3 |
88 |
|
11/11/2011 |
17.8 |
7.6 |
4.3 |
47.6 |
73.0 |
4.5 |
42 |
|
14/11/2011 |
23.1 |
7.4 |
3.7 |
44.3 |
41.0 |
#DIV/0! |
33 |
|
16/11/2011 |
23.1 |
7.5 |
3.6 |
42.8 |
63.1 |
3.5 |
40 |
|
18/11/2011 |
23.9 |
7.5 |
3.8 |
45.5 |
39.5 |
4 |
32.5 |
|
21/11/2011 |
22.5 |
7.5 |
5.0 |
59.9 |
41.5 |
2 |
33.5 |
|
23/11/2011 |
20.9 |
7.5 |
5.0 |
56.2 |
50.0 |
4 |
42.5 |
|
25/11/2011 |
20.3 |
7.4 |
4.5 |
52.1 |
48.8 |
4 |
39 |
|
28/11/2011 |
22.4 |
7.4 |
6.3 |
73.8 |
39.5 |
3.5 |
37 |
|
30/11/2011 |
24.7 |
7.5 |
6.6 |
80.9 |
23.9 |
2.5 |
15 |
|
|
|
|
|
|
|
|
|
|
Action Level |
- |
<5.5 or >7.5 |
<4.61 |
- |
>94 |
- |
>75 |
|
Limit Level |
- |
<4.0 or >8.0 |
<4.52 |
- |
>96 |
- |
>75 |
Notes:
Values Bold indicate Action Level exceedance.
Values Underlined and Bold indicate
Limit Level exceedance.
Exceedances of pH, DO, turbidity and SS were
observed at MP1 to MP6 in November 2011. Exceedances of pH
were often observed at MP1 to MP3 and a few times at MP4 to MP6. DO were exceeded
frequently at MP3 and exceeded several times at MP5 to MP6. Turbidity and/or SS
exceedances were recorded on several monitoring dates on MP3 and MP4 and one monitoring date at
MP5 and MP6 respectively.
The Event
and Action Plan in Appendix D was followed under these cases of exceedances.
From
investigation, construction activities during the period of exceedance included
mainly band drain installation, trial embankment for ground improvement and
site formation (filling). It was observed that the Contractor has implemented
water quality mitigation measures as recommended in the EIA report, including
the provision of temporary drainage facility and associated treatment facility.
Sand bags are in place in the temporary drainage channel to enhance the
desilting efficiency. The Contractor further enhanced the water quality
mitigation measures by erecting several segments of rock bunds at the discharge
outlet to avoid site runoff draining directly to the northern ditches.
Exceedances of action or limit level
of pH were observed at MP1 and MP2 frequently within the monitoring days and pH
ranged from 7.6 to 8.6. From investigation, there was no direct discharge from
the site to the ditch where MP1 and MP2 are located, so the exceedances were
not considered to be related to the construction activities.
The action and limit level of pH and
limit level of DO exceedances were frequently observed at MP3. 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 exceedances were not
considered to be related to the construction activities. The exceedances of pH
and DO maybe due to external factors such as pond fish culture activities which
were out of the control of the project. Action and/or Limit level exceedance of
turbidity and SS were observed at MP3 on 9, 11, 14, 16, 21 and 25 Nov 2011
(Only turbidity was exceeded on 9 and 14 Nov 2011).
From record of the Hong Kong Observatory,
local rainfall was recorded on 4 to 11 Nov 2011, 14 Nov 2011, 17 to 19 Nov
2011, 22 Nov 2011, 25 and 26 Nov 2011. The local rainfall could have caused
large amount of surface runoff from all sources in the vicinity of the ditch
and have significantly increased the turbidity and SS inside the ditch water.
Exceedances of action level of pH
were observed at MP4, MP5 and MP6 on a few monitoring days. Action and limit
levels of DO were exceeded several times at all these monitoring stations.
Action and/or Limit level exceedance of turbidity and SS were observed at MP4
on 4, 9, 21, 28 and 30 Nov 2011 (Only turbidity was exceeded on 9 Nov 2011).
Limit level exceedances of turbidity and SS were observed at MP5 and MP6 on 9
Nov 2011.
The continuous local rainfall could have
caused large amount of surface runoff from all sources in the vicinity of the
ditch and have significantly increased the turbidity and SS inside the ditch
water.
Another occasion of limit level exceedance
of turbidity and SS was recorded at MP4 on 21 Nov 2011. The high sediment
content in the water was potentially caused by the fish movement.
The exceedances of pH during the period could be due to natural variation as the
values were in similar range compared to other stations where exceedances were
also observed. Starting from early May 2011, the DO
measured at the ditch has fallen significantly due to microbe growth (including
algae). The ditch continued to be affected by this factor (respiration and
degradation of microbes which consumed oxygen). However, on sunny days,
photosynthesis of the algae sometimes increases the DO sharply in the water. As algae
grows further and dies, it causes increase in suspended solid and a decrease in
DO in the water.
Since the site discharge was controlled and
treated by the AquaSed system during the period, the exceedance was not
considered to be related to the project.
This report documents surveys
conducted in the Survey Area between 1 November and 30
November 2011. The Wetland Restoration Area
(hereafter 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 of conservation importance and/or wetland dependent
were identified and enumerated. 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. 25 bird species of conservation
importance and/or wetland-dependence were recorded in the Survey Area (excluding
the WRA). Within the WRA, 28 bird species of conservation importance and/or
wetland-dependent species were recorded.
A summary of survey data is provided in Appendix I.
The WRA
continues to attract a number of species of conservation importance, including
one Purple Heron Ardea purpurea, a
species of “Regional Concern” and a Pheasant-tailed Jacana Hydrophasianus chirurgus, a species listed as Local Concern
(Fellowes et al. 2002).
Two day
time herpetofauna surveys were conducted in the period. Only one reptile
species was recorded in the Survey Area (excluding the WRA). A summary of survey data is provided in Appendix J.
One dragonfly
and butterfly survey was conducted in November. Four dragonfly species and four
butterfly species were recorded in the Survey Area (excluding the WRA). A
higher diversity of dragonflies was recorded at the WRA, with eight dragonfly
and three butterfly species. One dragonfly species of conservation importance
(i.e. Coastal Glider Macrodiplax cora)
was recorded in the Survey Area (excluding the WRA). 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 period.
Water quality monitoring is required to stocking the cells with fish.
There are no water quality issues in the reporting period. Monitoring date and
data are presented in Appendix K.
Vegetation management activities
undertaken at the site involved primarily watering of plants, reviewing and
adjusting tree supports, some replacement planting, patching up hydroseeding
where germination was considered unsatisfactory and treating unhealthy/heavily
infested Litsea and Sapium plants with pesticide or
fungicide.
No management actions were required
during the reporting period.
Ecological monitoring during November 2011 was carried out according to
the survey methodology and frequency outlined in the EM&A Manual.
Summary of survey finding listed as
follow:
Table 4.1: Summary of ecological monitoring in WRA and Survey Area
|
Species/Site |
Survey Area (excluding WRA) |
WRA |
|
Birds |
25 |
28 |
|
Amphibians |
0 |
0 |
|
Reptiles |
1 |
0 |
|
Mammals |
0 |
0 |
|
Dragonflies |
4 |
8 |
|
Butterflies |
4 |
3 |
Survey findings indicate that the
ponds within the Survey Area supported numbers and diversity of
wetland-dependent birds and other species of conservation importance typical of
fish pond areas in the early dry season and that the WRA continues to attract
wetland dependent fauna.
The EM&A programme for Landscape and
Visual impact due to the construction commenced in May 2010 and was continued
during the reporting period. Site inspections on Landscape and Visual impact
were carried out on 11 and 24 November 2011 to confirm the implementation of
mitigation measures at construction stage.
The audit
was undertaken with references to the specific checklists provided in Tables 2.13 – 2.15 and audit results
are summarized as below:
Table 5.1: Construction and Operation Phase Audit Summary
|
Area
of Works |
Items
to 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 - No
construction works were observed to have exceeded the site boundaries. Moreover,
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 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 tanks 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 largely 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. |
|
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. |
|
Night-time lighting |
No
night-time works were reported to have been carried out during the
monitoring period |
|
Landscape and wetland treatments |
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 has been completed. The
wetland areas are being established, with the ponds partially filled with
rain water. Planting
of areas around the WRA cells is almost complete. No
construction was carried out at the wetland restoration area after 15
November 2010. |
|
Soiling |
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 along the southern and
western boundaries of the site are all common species and came from
commercial sources. Transplanted
reeds (Phragmites australis) at the wetland habitat are come from the
temporary holding nursery onsite. |
|
Planting |
The
total numbers of trees that will reach a minimum of 10m in the advance
planting strip meet the contract requirements. The tree species are all from the approved
list. This planting should achieve
the required screening effect within the permitted time period. Trees
that were identified as dead in previous month have been replaced.
Previously fallen tree (T180) has been rectified. Whip size trees, shrubs, and herb species
have been planted on the slopes along the wetland. Some specimens appear to
be in poor condition. Work is
required to rectify or improve the situation. |
|
Establishment Works |
The
advance planting, the compensatory planting and the transplanted trees are
generally being maintained by the landscape sub-contractor in accordance
with the specification to ensure that the contract requirements are met. Some
of the leaning trees, affected by the recent typhoons, have been set upright
and supported. Many taller trees
(especially Eucalyptus sp.) that
have been partially blown over and others that are growing into the noise
barrier structure still need to be corrected. Precautions should be taken to prevent
damage to the trees by the structure. Pruning of some large trees has been
undertaken. Relocation
of trees along the advanced planting strip has been undertaken to allow
sufficient room for tree growth. Cables
around the transplanted tree trunks should be removed to allow full establishment
of the trees. Fungal
growths and infestation of insects were found on a number of trees, which
have previously suffered trunk bark damage.
These need fungicidal treatment or to be removed. Low
coverage of some areas of shrubs need to be rectified with further infill
shrubs planting. Minor areas of
shrubs have been cleared and these need to be replaced. There
is still very extensive growth of weeds and invasive climbers in the space
behind screen noise barrier which are inhibiting the advance planting, and
urgently need to be cleared. Conditions
of the Phragmites australis reeds
(translocated from the original site) have improved with increased water
level. Hydroseeded
grass has been established along the access path around the WRA cells. Weeding
and regular watering of the shrubs and tree seedlings planted around the WRA
cells have been undertaken. |
The ET had carried out construction phase weekly
site inspections on 2, 11, 18 and 25 November 2011. 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) |
|
Dust at mixing of soil area |
To further increase the frequency
of watering spraying and cover with tarpaulin |
Agreed and action taken |
2 Nov 2011 |
|
Broken noise barrier at southern
boundary |
To replace a new noise barrier |
Agreed and action taken |
2 Nov 2011 |
|
Mud settled in the drainage
channel |
To clear the mud |
Agreed and action taken |
11 Nov 2011 |
|
Chemical drip tray of Aqua-sed system is broken |
To replace a new drip tray |
Agreed and action taken |
18 Nov 2011 |
|
Some tarpaulin sheet weathered out
at the trial embankment |
To replace the tarpaulin for
better dust suppression |
Agreed and action taken |
18 Nov 2011 |
|
Water overflow from the channel |
To pump out the water |
Agreed and action taken |
18 Nov 2011 |
|
Stagnant water around site area |
To clear the stagnant water |
Agreed and action taken |
25 Nov 2011 |
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, 8765.6 tonnes of C&D material were
generated on site during the period. No metals was generated and collected by
registered recycling collector. No paper cardboard packing and plastic were generated
on site and collected by registered recycling collector. No chemical waste was
generated and collected by licensed chemical waste collector. 7.1
tonnes 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 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-311/2008B |
Valid |
|
APCO |
Notification of Construction Work under
APCO |
316688 (27 Apr
2010) |
Valid |
|
WPCO |
Discharge License |
WT00007442-2010 (2 Nov 2010) |
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:
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
·
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
·
Water accumulated in the site (including water inside
drip trays) should be cleared frequently;
·
Ensure
proper functioning of the wastewater
treatment facility; 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;
·
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.
There is no breach of Action or Limit Levels for Air Quality and Noise monitoring in the reporting month.
Exceedances of pH, DO, turbidity and SS were
observed at MP1 to MP6 in
November 2011. Exceedances of pH were often observed at
MP1 to MP3 and a few times at MP4 to MP6. DO were exceeded frequently at MP3 and
exceeded several times at MP5 to MP6. Turbidity and/or SS exceedances were
recorded on several monitoring dates on MP3 and MP4 and one monitoring date at
MP5 and MP6 respectively.
Table 7.1: Summary of exceedances in Water Quality
|
Monitoring Date |
pH |
Dissolved Oxygen (mg/L) |
Turbidity (NT) |
Suspended Solids (mg/L) |
|
MP1 |
|
|
|
|
|
02/11/2011 |
7.6 |
4.2 |
28.1 |
24.5 |
|
04/11/2011 |
8.0 |
5.9 |
11.6 |
8 |
|
07/11/2011 |
7.7 |
3.1 |
37.0 |
24.5 |
|
09/11/2011 |
8.6 |
7.6 |
58.8 |
61.5 |
|
11/11/2011 |
8.4 |
5.2 |
93.1 |
79.5 |
|
14/11/2011 |
7.7 |
4.9 |
63.5 |
52.5 |
|
16/11/2011 |
7.7 |
4.5 |
18.2 |
16 |
|
18/11/2011 |
8.1 |
5.8 |
42.2 |
42 |
|
21/11/2011 |
7.8 |
5.5 |
11.0 |
8.5 |
|
23/11/2011 |
7.6 |
4.5 |
53.3 |
42 |
|
25/11/2011 |
8.0 |
6.3 |
94.2 |
101 |
|
28/11/2011 |
7.7 |
5.6 |
110.5 |
115 |
|
30/11/2011 |
7.8 |
8.6 |
56.5 |
49 |
|
Action Level |
<5.5 or >7.5 |
<1.23 |
>173 |
>231 |
|
Limit Level |
<4.0 or >8.0 |
<1.17 |
>177 |
>299 |
|
|
|
|
|
|
|
MP2 |
|
|
|
|
|
02/11/2011 |
7.6 |
4.0 |
20.8 |
18 |
|
04/11/2011 |
7.9 |
6.2 |
12.7 |
9 |
|
07/11/2011 |
7.6 |
3.3 |
35.6 |
21 |
|
09/11/2011 |
8.5 |
7.6 |
33.7 |
28.5 |
|
11/11/2011 |
8.3 |
4.8 |
92.3 |
85.5 |
|
14/11/2011 |
7.7 |
4.5 |
62.1 |
52.5 |
|
16/11/2011 |
7.7 |
4.1 |
33.8 |
34 |
|
18/11/2011 |
8.0 |
5.6 |
38.9 |
43 |
|
21/11/2011 |
8.0 |
5.5 |
9.3 |
7 |
|
23/11/2011 |
7.6 |
4.1 |
59.3 |
41 |
|
25/11/2011 |
8.0 |
6.2 |
130.3 |
149 |
|
28/11/2011 |
7.9 |
6.9 |
91.0 |
113.5 |
|
30/11/2011 |
7.8 |
8.8 |
42.1 |
32 |
|
Action Level |
<5.5 or >7.5 |
<1.04 |
>132 |
>170 |
|
Limit Level |
<4.0 or >8.0 |
<0.89 |
>163 |
>209 |
|
|
|
|
|
|
|
MP3 |
|
|
|
|
|
02/11/2011 |
7.8 |
2.8 |
43.1 |
37.5 |
|
04/11/2011 |
7.8 |
3.0 |
39.4 |
31.5 |
|
07/11/2011 |
7.9 |
3.6 |
38.9 |
26.5 |
|
09/11/2011 |
7.5 |
4.5 |
72.1 |
62.5 |
|
11/11/2011 |
7.7 |
4.1 |
98.3 |
80 |
|
14/11/2011 |
7.5 |
3.2 |
78.1 |
63 |
|
16/11/2011 |
7.9 |
3.5 |
90.2 |
81.5 |
|
18/11/2011 |
7.7 |
3.2 |
60.5 |
53 |
|
21/11/2011 |
7.9 |
2.9 |
69.8 |
68.5 |
|
23/11/2011 |
7.9 |
3.7 |
61.9 |
57.5 |
|
25/11/2011 |
7.8 |
4.0 |
92.9 |
86 |
|
28/11/2011 |
7.3 |
5.2 |
39.7 |
40.5 |
|
30/11/2011 |
8.1 |
7.9 |
56.5 |
47 |
|
Action Level |
<5.5 or >7.5 |
<6.85 |
>64 |
>65 |
|
Limit Level |
<4.0 or >8.0 |
<6.65 |
>67 |
>66 |
|
|
|
|
|
|
|
MP4 |
|
|
|
|
|
02/11/2011 |
7.7 |
5.6 |
45.5 |
39.5 |
|
04/11/2011 |
7.7 |
8.9 |
76.7 |
82.5 |
|
07/11/2011 |
7.8 |
5.1 |
39.4 |
29.5 |
|
09/11/2011 |
8.1 |
4.7 |
61.9 |
39 |
|
11/11/2011 |
8.3 |
6.4 |
54.7 |
35 |
|
16/11/2011 |
7.8 |
4.9 |
33.7 |
18 |
|
18/11/2011 |
7.9 |
4.3 |
43.0 |
34 |
|
21/11/2011 |
7.8 |
4.6 |
65.7 |
55 |
|
28/11/2011 |
7.8 |
11.0 |
61.0 |
66.5 |
|
30/11/2011 |
8.0 |
10.7 |
113.4 |
90 |
|
Limit Level |
<4.0 or >8.0 |
<3.82 |
>64 |
>53 |
|
|
|
|
|
|
|
MP5 |
|
|
|
|
|
02/11/2011 |
7.3 |
4.1 |
36.8 |
27.5 |
|
09/11/2011 |
7.9 |
6.4 |
149.0 |
84.5 |
|
11/11/2011 |
7.6 |
5.7 |
76.3 |
42.5 |
|
16/11/2011 |
7.5 |
3.8 |
56.7 |
36 |
|
30/11/2011 |
7.6 |
6.8 |
27.2 |
14.5 |
|
Action Level |
<5.5 or >7.5 |
<4.13 |
>81 |
>66 |
|
Limit Level |
<4.0 or >8.0 |
<3.87 |
>84 |
>69 |
|
|
|
|
|
|
|
MP6 |
|
|
|
|
|
02/11/2011 |
7.4 |
4.3 |
38.7 |
28 |
|
09/11/2011 |
8.0 |
6.1 |
153.5 |
88 |
|
11/11/2011 |
7.6 |
4.3 |
73.0 |
42 |
|
14/11/2011 |
7.4 |
3.7 |
41.0 |
33 |
|
16/11/2011 |
7.5 |
3.6 |
63.1 |
40 |
|
18/11/2011 |
7.5 |
3.8 |
39.5 |
32.5 |
|
25/11/2011 |
7.4 |
4.5 |
48.8 |
39 |
|
Action Level |
<5.5 or >7.5 |
<4.61 |
>94 |
>75 |
|
Limit Level |
<4.0 or >8.0 |
<4.52 |
>96 |
>75 |
Notes:
Values Bold indicate Action Level exceedance.
Values Underlined and Bold indicate
Limit Level exceedance.
On 15 November 2011, a compliant was lodged with the Environmental Protection Department (EPD) on noise impact from MTR construction site near Royal Palms, Yuen Long. The complaint was related to general construction noise at around 8pm. The complaint was subsequently received by MMHK from EPD on the same day.
On 25 November 2011, a complaint was lodged with the Environmental Protection Department (EPD) on noise impact from MTR construction site near Mai Po Tsuen, Yuen Long. The complaint was related to general construction noise at after 10pm. The complaint was subsequently received by MMHK from EPD on 1 December 2011.
No notifications of summons or successful prosecution were received the reporting month.
Non-compliance
Investigations have been carried out to
identify the causes of exceedance.
From investigation, construction activities during
the period of exceedance included mainly band drain installation, trial
embankment and site formation (filling). It was observed that the Contractor
has implemented water quality mitigation measures as recommended in the EIA
report, including the provision of temporary drainage facility and associated
treatment facility. Sand bags are in place in the temporary drainage channel to
enhance the desilting efficiency. The Contractor further enhanced the water
quality mitigation measures by erecting several segments of rock bunds at the
discharge outlet to avoid site runoff draining directly to the northern
ditches.
With external factors
affect the adjacent environments, such as natural variations, pond fish culture
activities, heavy rainfall, microbe growth (including algae) and water plant clearing, the exceedances were considered not due to
construction works.
Complaint
Investigation of the
complaint case indicated that the Contractor has implemented the noise quality
mitigation measures as recommended in EM&A Manual.
Base on the site
daily recorded provided by Contractor, no construction work was carried out
during night time in November 2011.
In addition, there is
no complaint for construction noise received from commencement of construction
of the Project to the first date of complaint. Noise monitoring was conducted
during daytime since commencement of construction of the Project. No exceedance
of action and limit levels for construction noise was recorded from commencement
of construction of the Project to the first date of compliant. The works on
site were similar nature and scale from commencement of construction of the
Project to the date of complaint. No deterioration of noise was observed during
regular site audits carried out by the Environmental Team.
Base on the above
findings, it can be concluded that the project site is not the cause of the
complaint.
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.
To cater for the site runoff in wet season, the
Contractor has further enhanced the water quality mitigation measures by
erecting several segments of rock bunds at the discharge outlet to avoid site
runoff draining directly to the northern ditches.
Complaint
Regarding the complaint cases on noise on 15
and 25 November 2011, it was concluded that this project site was not the cause
of the complaints. Noise mitigation measures as recommended in the EM&A
Manual have been implemented by Contractor to minimize the noise nuisance from
the site activities. As no night time construction work was carried out on
site, our project site is not the cause of the complaints. Therefore, no
further mitigation measure is required to be recommended.
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 the Table
7.2 below.
Table 7.2: Statistics for complaints, notifications of summons and successful prosecutions
|
Reporting Period |
Cumulative
Statistics |
||
|
|
Complaints |
Notifications of
summons |
Successful
prosecutions |
|
This reporting month (Nov 2011) |
2 |
0 |
0 |
|
From 12 May 2010 to end
of the reporting month (Nov 2011) |
3 |
0 |
0 |
The major site works to be commissioned in the coming month include:
¡
Band Drain installation,
¡
Trial
Embankment for Ground
Improvement
¡
Site
Formation (Filling)
Key issues to be considered in the coming month include:
¡
Generation
of dust from activities on-site during dry weather condition;
¡
Noise
impact from operating equipment and machinery on-site;
¡
Generation
of site surface runoffs and wastewater from activities on-site;
¡
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.
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 November 2011 is shown in the Table 8.1.
Table 8.1: Tentative Environmental Monitoring and
Audit Schedule for December
2011

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 and SS) under monitoring have been checked against established Action and Limit levels.
There was no breach of Action and Limit Levels for 1-hr TSP,
24-hr TSP and noise in the
reporting month.
Exceedances of pH,
DO, turbidity and SS were observed at MP1 to MP6 in November 2011. Exceedances of pH were often observed at
MP1 to MP3 and a few times at MP4 to MP6. DO were exceeded frequently at MP3 and exceeded several times at MP5 to
MP6. Turbidity and/or SS exceedances were recorded on several monitoring dates
on MP3 and MP4 and one monitoring date at MP5 and MP6 respectively.
From
investigation, the Contractor has implemented water quality mitigation measures
as recommended in the EIA report. With external factors affect the adjacent
environments, such as natural variations, pond fish culture activities, heavy
rainfall, microbe growth (including algae) and water plant clearing, the exceedances were considered
not due to construction works.
On 15 November 2011, a complaint was lodged with the Environmental Protection Department (EPD) on noise impact from MTR construction site near Royal Palms, Yuen Long. The complaint was about general construction noise at around 8pm. The complaint was subsequently received by MMHK from EPD on the same day. Investigation results of the complaint showed that this project site is not the cause of the complaint.
On 25 November 2011, a complaint was lodged with the Environmental Protection Department (EPD) on noise impact from MTR construction site near Mai Po Tsuen, Yuen Long. The complaint was related to general construction noise at after 10pm. The complaint was subsequently received by MMHK from EPD on 1 December 2011. Investigation results of the complaint showed that this project site is not the cause of the complaint.
Therefore,
no further mitigation measure is required to be recommended.
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
·
Sufficient water spraying should be provided at haul
road to reduce dust emission, especially during dry weather conditions; 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
·
Water accumulated in the site (including water inside
drip trays) should be cleared frequently;
·
Ensure
proper functioning of the wastewater treatment facility; 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;
·
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 |
Telephone / |
|
Heng Shung Construction Co. Ltd. (The Contractor) |
Assistant Construction
Manager |
Ms Lynne Hung |
2908 2391 |
|
Heng Shung Construction Co. Ltd. (The Contractor) |
Site Agent |
Mr Poon Man Ho |
9426 3533 |
|
Heng Shung Construction Co. Ltd. (The Contractor) |
Environmental Officer |
Mr. Lun Ho Yin |
9866 7497 |
|
ENVIRON Hong
Kong Ltd (IEC) |
Independent Environmental
Checker |
Mr |
3743 0788 |
|
Mott MacDonald Hong Kong Ltd. (ET) |
ET Team Leader |
Ms Florence Yuen |
2828 5768 |
Appendix C.
Action
and Limit Levels for Construction Phase
|
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
|
Parameters |
DO in mg/L |
Turbidity in NTU |
SS in mg/L |
pH |
||||
|
|
Action
Level |
Limit
Level |
Action
Level |
Action
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. |
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
|
|
Nov 2011 |
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
10 |
11 |
12 |
13 |
14 |
15 |
|
Mammals |
|
|
ü |
|
|
|
|
|
|
ü |
|
|
|
|
ü |
|
Birds |
|
|
ü |
|
|
|
|
|
|
ü |
|
|
|
|
ü |
|
Herpetofauna |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
ü |
|
Dragonflies & butterflies |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
ü |
|
Water
Quality |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
ü |
|
Inspection Visits |
|
|
ü |
|
|
|
|
|
|
ü |
|
|
|
|
ü |
|
Nov 2011 |
16 |
17 |
18 |
19 |
20 |
21 |
22 |
23 |
24 |
25 |
26 |
27 |
28 |
29 |
30 |
31 |
|
Mammals |
|
|
|
|
|
|
|
|
ü |
|
|
|
|
|
|
|
|
Birds |
|
|
|
|
|
|
|
|
ü |
|
|
|
|
|
|
|
|
Herpetofauna |
|
|
|
|
|
|
|
|
|
|
|
|
ü |
|
|
|
|
Dragonflies & butterflies |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Water
Quality |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Inspection Visits |
|
|
|
|
|
|
|
|
ü |
|
|
|
|
|
|
|
Note:
* Light grey cells indicated
public holidays, Saturdays or Sundays.
Appendix I.
Summary of Bird Surveys conducted
|
Table
I1. Summary of bird species of conservation
importance and/or wetland-dependence recorded in the Survey Area (excluding the
WRA)
|
Species Name |
Scientific Name |
Conservation Status (2) |
Nov 2011 |
|
|
Occurrence(3) |
Mean(4) |
|||
|
Little Grebe |
Tachybaptus ruficollis |
LC, (1) |
4 |
26.8 |
|
Great Cormorant |
Phalacrocorax carbo |
PRC, (1) |
3 |
8.8 |
|
Grey Heron |
Ardea cinerea |
PRC, (1) |
4 |
10.5 |
|
Great Egret |
Egretta alba |
PRC, (1) |
4 |
30.3 |
|
Intermediate Egret |
Egretta intermedia |
RC, (1) |
2 |
1.0 |
|
Little
Egret |
Egretta garzetta |
PRC, (1) |
4 |
115.3 |
|
Black-faced
Spoonbill |
Platalea minor |
PGC, (1) |
1 |
2.5 |
|
Osprey |
Pandion haliaetus |
RC |
1 |
0.3 |
|
Black Kite |
Milvus migrans |
(RC) |
2 |
0.5 |
|
White-breasted Waterhen |
Amaurornis phoenicurus |
(1) |
2 |
0.8 |
|
Common Moorhen |
Gallinula chloropus |
(1) |
4 |
4.0 |
|
Pheasant-Tailed Jacana |
Hydrophasianus chirurgus |
LC, (1) |
1 |
0.3 |
|
Black-winged Stilt |
Himantopus himantopus |
RC, (1) |
2 |
1.0 |
|
Pied Avocet |
Recurvirostra avosetta |
RC, (1) |
1 |
0.5 |
|
Grey-headed Lapwing |
Vanellus cinereus |
LC, (1) |
1 |
0.3 |
|
Little Ringed Plover |
Charadrius dubius |
LC, (1) |
4 |
7.8 |
|
Kentish Plover |
Charadrius alexandrinus |
RC, (1) |
1 |
0.3 |
|
Marsh Sandpiper |
Tringa stagnatilis |
RC, (1) |
2 |
3.0 |
|
Green Sandpiper |
Tringa ochropus |
(1) |
4 |
2.5 |
|
Wood Sandpiper |
Tringa glareola |
LC, (1) |
4 |
3.3 |
|
Whiskered Tern |
Chlidonias hybridus |
(1) |
1 |
0.3 |
|
Common Kingfisher |
Alcedo atthis |
(1) |
4 |
3.8 |
|
White-throated Kingfisher |
Halcyon smyrnensis |
(LC) |
3 |
0.8 |
|
Yellow Wagtail |
Motacilla flava |
(1) |
4 |
4.3 |
|
Grey Wagtail |
Motacilla cinerea |
(1) |
1 |
0.3 |
|
No. of Species Recorded |
25 |
|||
(1) indicates wetland-dependant or wetland-associated species.
(2) Conservation status follows that of Fellowes et al. (2002) and BirdLife International listing (2010).
(3) indicates number of surveys recorded within the reporting period.
(4) refers to the mean number of individuals recorded in the reporting period (excluding the WRA)
Table I2. Summary of bird species of conservation importance and/or
wetland-dependence recorded in the WRA
|
Species Name |
Scientific Name |
Conservation Status (2) |
Nov 2011 |
|
|
Occurrence(3) |
Mean(4) |
|||
|
Little
Grebe |
Tachybaptus
ruficollis |
LC, (1) |
1 |
0.5 |
|
Great
Cormorant |
Phalacrocorax
carbo |
PRC, (1) |
1 |
0.3 |
|
Grey
Heron |
Ardea
cinerea |
PRC, (1) |
4 |
2.5 |
|
Purple
Heron |
Ardea
purpurea |
RC, (1) |
1 |
0.3 |
|
Great
Egret |
Egretta
alba |
PRC, (RC), (1) |
1 |
0.8 |
|
Intermediate
Egret |
Egretta
intermedia |
RC, (1) |
2 |
1.5 |
|
Little Egret |
Egretta
garzetta |
PRC, (RC) (1) |
2 |
1.5 |
|
Chinese Pond Heron |
Ardeola
bacchus |
PRC, (RC), (1) |
3 |
5.3 |
|
Yellow Bittern |
Ixobrychus
sinensis |
(LC), (1) |
1 |
0.3 |
|
White-breasted
Waterhen |
Amaurornis
phoenicurus |
(1) |
1 |
0.3 |
|
Pheasant-tailed
Jacana |
Hydrophasianus
chirurgus |
LC, (1) |
1 |
0.3 |
|
Common
Greenshank |
Tringa
nebularia |
RC, (1) |
3 |
0.8 |
|
Spotted Dove |
Steptopelia chinensis |
- |
1 |
1.0 |
|
Common
Kingfisher |
Alcedo
atthis |
(1) |
2 |
0.8 |
|
White-throated Kingfisher |
Halcyon smyrnensis |
(LC) |
1 |
0.3 |
|
Yellow
Wagtail |
Motacilla
flava |
(1) |
2 |
2.0 |
|
White
Wagtail |
Motacilla
alba |
(1) |
1 |
0.3 |
|
Richard’s
Pipit |
Anthus
richardi |
- |
3 |
1.8 |
|
Common
Stonechat |
Saxicola
torquata |
- |
1 |
0.5 |
|
Black-browed
Reed Warbler |
Acrocephalus
bistrigiceps |
- |
1 |
0.5 |
|
Zitting
Cisticola |
Cisticola juncidis |
LC |
3 |
0.8 |
|
Dusky Warbler |
Phylloscopus fuscatus |
- |
1 |
0.3 |
|
Black-faced
Bunting |
Emberiza
spodocephala |
- |
1 |
0.5 |
|
Scaly-breasted
Munia |
Lonchura
punctulata |
- |
1 |
2.5 |
|
Red-billed Starling |
Sturnus sericeus |
GC |
1 |
0.8 |
|
Black-collared
Starling |
Sturnus
nigricollis |
- |
1 |
1.0 |
|
Crested
Myna |
Acridotheres
cristatellus |
- |
1 |
0.8 |
|
Collared
Crow |
Corvus
torquatus |
LC, NT |
1 |
0.5 |
|
No. of Species Recorded |
28 |
|||
(1) indicates wetland-dependant or
wetland-associated species.
(2) Conservation status follows that of Fellowes
et al. (2002) and BirdLife International listing (2010).
(3) indicates number of surveys recorded within
the reporting period.
(4) refers to the mean number of individuals
recorded in the reporting period at WRA
Appendix J.
Summary
of Herpetofauna and Insects Surveys conducted
|
Table
J1. Summary of herpetofauna monitoring in
the Survey Area (excluding the WRA)
|
Species Name |
Scientific Name |
Conservation Status(1) |
Nov 2011 |
|
|
Occurrence(2) |
Mean(3) |
|||
|
Amphibian |
|
|
- |
|
|
(No Records in Nov 2011) |
||||
|
Reptile |
|
|
- |
|
|
Bowring’s Gecko |
Hemidactylus
bowringii |
- |
1 |
1.0 |
(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 2011 |
|
|
Occurrence(2) |
Mean(3) |
|||
|
Amphibian |
|
|
- |
|
|
(No Records in Nov 2011) |
||||
|
Reptile |
|
|
|
|
|
(No Records in Nov 2011) |
||||
(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
J3. Summary of mammal monitoring in the
Survey Area (excluding the WRA)
|
Species Name |
Scientific Name |
Conservation Status(1) |
Nov 2011 |
|
|
Occurrence(2) |
Mean(3) |
|||
|
Mammal |
|
|||
|
(No Records in Nov 2011) |
||||
(1) Conservation status follows that of Fellowes et al. (2002) and Shek (2006).
Table J4. Summary of mammal monitoring in the WRA
|
Species Name |
Scientific Name |
Conservation Status(1) |
Nov 2011 |
|
Mammal |
|
|
|
|
(No Records in Nov 2011) |
|||
(1) Conservation status follows that of
Fellowes et al. (2002) and Shek
(2006).
Table J5. Summary
of dragonfly and butterfly monitoring in the Survey Area (excluding the WRA)
|
Common Name |
Scientific Name |
Conservation Status(1) |
Nov 2011 |
|
|
Occurrence(2) |
Mean(3) |
|||
|
Odonate |
No. of Species Recorded |
4 |
||
|
Common Bluetail |
Aschnura senegalensis |
- |
1 |
3.0 |
|
Coastal Glider |
Macrodiplax cora |
LC |
1 |
2.0 |
|
Wandering Glider |
Pantala flavescens |
- |
1 |
25.0 |
|
Saddlebag Glider |
Tramea virginia |
- |
1 |
1.0 |
|
Butterfly |
No. of Species Recorded |
4 |
||
|
Indian Cabbage White |
Pieris canidia |
- |
1 |
3.0 |
|
Mottled Emigrant |
Catopsilia pyranthe |
- |
1 |
1.0 |
|
Common Grass Yellow |
Eurema hecabe |
- |
1 |
5.0 |
|
Great Egg-fly |
Hypolimnas bolina |
- |
1 |
3.0 |
(1) Conservation status follows that of Fellowes et al. (2002), Lo & Hui (2004), Wilson (2004) and Young & Yiu (2002).
(2) indicates number of surveys recorded within the reporting period.
(3) refers to the mean number of individuals recorded in each survey in the survey (excluding the WRA).
Table J6. Summary of dragonfly and butterfly
monitoring in the WRA
|
Common Name |
Scientific Name |
Conservation Status(1) |
Nov 2011 |
||
|
Occurrence(2) |
Mean(3) |
||||
|
Odonate |
No. of Species Recorded |
8 |
|||
|
Pale-spotted Emperor |
Anax guttatus |
- |
1 |
4.0 |
|
|
Common Flangetail |
Ictinogomphus pertinax |
- |
1 |
2.0 |
|
|
Regal Pond Cruiser |
Epophthalmia elegans |
- |
1 |
2.0 |
|
|
Asian Amberwing |
Brachythemis contaminata |
- |
1 |
3.0 |
|
|
Crimson Darter |
Crocothemis servilia |
- |
1 |
2.0 |
|
|
Green Skimmer |
Orthetrum sabina |
- |
1 |
10.0 |
|
|
Variegated Flutterer |
Rhyothemis variegata |
- |
1 |
1.0 |
|
|
Pale-spotted Emperor |
Anax guttatus |
- |
1 |
4.0 |
|
|
Butterfly |
No. of Species Recorded |
3 |
|||
|
Mottled Emigrant |
Catopsilia pyranthe |
- |
1 |
3.0 |
|
|
Common Grass Yellow |
Eurema hecabe |
- |
1 |
1.0 |
|
|
Great Egg-fly |
Hypolimnas bolina |
- |
1 |
1.0 |
|
(1) Conservation status follows that of Fellowes et al. (2002), Lo & Hui (2004), Wilson (2004) and Young & Yiu (2002).
(2) indicates number of surveys recorded within the reporting period.
(3) refers to the mean number of individuals
recorded in each survey in the WRA.
Table K1. Water quality at WRA in November 2011
|
Cell No. |
Temp. (°C) |
pH |
Salinity (ppt) |
Turb (mg/L) |
DO (mg/L) |
Water Level (cm) |
|
1 |
25.2 |
7.80 |
0.92 |
11 |
3.94 |
210 |
|
2 |
26.2 |
7.71 |
1.11 |
10 |
4.51 |
175 |
|
3 |
25.9 |
7.80 |
1.11 |
18 |
5.48 |
215 |
|
4 |
25.6 |
7.47 |
1.26 |
2 |
3.07 |
215 |