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Issue and revision record |
This document is
issued for the party which commissioned it and for specific purposes
connected with the above-captioned project only. It should not be relied
upon by any other party or used for any other purpose. |
We accept no
responsibility for the consequences of this document being relied upon by
any other party, or being used for any other purpose, or containing any
error or omission which is due to an error or omission in data supplied to
us by other parties. This document
contains confidential information and proprietary intellectual property. It
should not be shown to other parties without consent from us and from the
party which commissioned it.. |
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Date |
Originator |
Checker |
Approver |
Description |
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A |
14 August
2014 |
Edward
Leung / Brandon Wong |
Terence Kong |
Eric Ching |
Issue
to Client |
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Contents |
Chapter Title Page
Tables
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, Mammal and
Insect Surveys Conducted
Appendix L Environmental Mitigation Measures - Implementation Status
Appendix M Landscape
and Visual Audit Photos
Mott
MacDonald Hong Kong Ltd. (“MMHK”) has been commissioned by Heng Shung
Construction Co. Ltd. to undertake the Environmental Team (ET) services to
carry out environmental monitoring and audit (EM&A) for both
pre-construction and construction phases of the Proposed Comprehensive
Development at Wo Shang Wai, Yuen Long.
This
is the 51st EM&A report submitted under the Condition 4.5 of
Environmental Permit No. EP-311/2008/D. This report summarises the findings on
EM&A during the period from 1 to 31 July 2014.
Exceedance of Action and Limit Levels
There
was no breach of Action or Limit levels for Air Quality (1-hr TSP and 24-hr
TSP) and Noise level (as Leq) in the reporting month.
During July 2014, a number of exceedances
of DO were observed at MP3 and one exceedance of SS was observed at MP4. No
exceedance was observed at MP5 and MP6.
The
summary of measured water quality is presented in Section 3.2.3.
Investigations have been carried out
to identify the causes of exceedance. From investigation, the Contractor has
implemented water quality mitigation measures as recommended in the EIA report.
With external factors affecting the adjacent environments, such as natural
variations, pond fish culture activities and rainfall, the exceedances were
considered not due to the project construction works.
Implementation of Mitigation Measures
Site
audits were carried out on 8, 15, 22 and 29 July 2014 to
confirm the implementation measures undertaken by the Contractor in the
reporting month. The outcomes are presented in Section 6 and the status of implementation of mitigation measures
in the site is shown in Appendix L.
Record of
Complaints
There was no new record of complaints received in the reporting month.
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 scheduled to be commissioned in the coming three months include site
formation, foundation work and pond drainage management in the Wetland
Restoration Area (to lower the water level and remove unwanted species in the
pond). 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 at Wo Shang Wai in Yuen Long. An Environmental Impact Assessment (EIA) was then carried out and approved under the EIA Ordinance (EIAO), and the Environmental Permit (EP-311/2008) for construction of the comprehensive development in Wo Shang Wai was first granted by EPD on 9 September 2008 and has been subsequently varied, with the current version (EP-311/2008/D) issued by EPD on 20 March 2013.
The
Project involves the residential development and associated
infrastructure and wetland restoration area and linear
landscape area. The construction works under the Environmental Permit commenced
on 12 May 2010. The site formation construction works of the Wetland Restoration Area (hereafter WRA) were completed on 15
November 2010, while the 30-month establishment period of the WRA was concluded
in August 2012 – this indicated that planting works as scheduled in the
approved Wetland Restoration and Creation Scheme (WRCS; Nov 2009) was complete,
except along the western and southern boundary where the planting is affected
by the existing site boundary and noise barrier, and for which a Variation to
Environmental Permit (EP-311/2008/C) to defer planting at the location was
approved. The current valid EP (EP-311/2008/D) includes specific mitigation
measures to minimise certain identified noise impacts during the operation
phase.
Mott MacDonald Hong Kong Ltd. (“MMHK”) has been commissioned by the Contractor, Heng Shung Construction Co. Ltd., to undertake the Environmental Team (ET) services to carry out environmental monitoring and audit (EM&A) for both pre-construction and construction phases of the Proposed Comprehensive Development at Wo Shang Wai, Yuen Long.
According to the EP Condition 4.5, the monthly EM&A Report shall be submitted to the Director within two weeks after the end of the reporting month. This report summarises the findings during the period from 1 to 31 July 2014.
The organisation chart
and lines of communication with respect to the on-site environmental management
structure together with the contact information of the key personnel are shown
in Appendix A.
During the
reporting month, construction works of the Project undertaken include:
¡ Site formation
¡ Foundation work
¡ Pond drainage management in the Wetland
Restoration Area (to lower the water level and remove unwanted species in the
pond)
The Construction
Works Programme of the Project is provided in Appendix B. The general layout plan of the Project site is shown in Figure 1.1.
The EM&A programme requires environmental monitoring of air quality, noise, water quality, ecology and landscape and visual as specified in the approved EM&A Manual.
A summary of impact EM&A requirements is presented in Table 1.1 below:
Table 1.1: Summary of Impact EM&A Requirements
|
Parameters |
Descriptions |
Locations |
Frequencies |
|
Air
Quality |
24-Hour TSP |
ASR1, ASR2A, ASR3, ASR4 |
Once every 6 days |
|
1-Hour TSP |
ASR1, ASR2A, ASR3, ASR4 |
3 times every 6 days |
|
|
Noise |
Leq,
30min |
NSR1, NSR3, NSR5, NSR7 |
Weekly |
|
Water Quality |
Dissolved Oxygen (DO), temperature, pH, suspended solids (SS) and Biological Oxygen Demand (BOD) |
MP1 to MP6 |
3 days per week |
|
Ecology |
Birds |
Within the Project Area and Assessment Area of 500m |
Weekly |
|
Dragonflies and Butterflies |
Within the Project Area and Assessment Area of 500m |
Once per month during Mar and Sep to November, and twice per month during Apr to Aug |
|
|
Herpetofauna |
Within the Project Area and Assessment Area of 500m |
Once per month during Apr to Nov |
|
|
Water quality of Wetland Restoration Area (WRA) |
WRA |
After filling of WRA with water, monthly for in situ water quality and every size months (end of wet season and end of dry season) for laboratory testing |
|
|
Site Inspections |
Within the Project Area and Assessment Area of 500m |
Weekly |
|
|
Landscape and Visual |
Auditing of
protection of existing trees, the transplanting of existing trees, the
creation of new wetland, the planting of new trees and shrubs and other
landscape and visual mitigation measures |
CM1 to CM10 and OM1 to OM7 within the
Project Area |
Site
inspections once every two weeks during construction phase; once every two
months during operational phase |
The Environmental Quality Performance Limits for air quality, noise and water quality are shown in Appendix C.
The Event and Action Plan for air quality, noise and water quality are shown in Appendix D.
The monitoring
schedule for the reporting month is shown in Table 1.2 below
Table 1.2: Environmental
Monitoring and Audit Schedule for July 2014
For air
quality, construction noise and water quality, ecology,
landscape and visual monitoring methodology, including the monitoring
locations, monitoring equipment used, monitoring parameters, and frequency and
duration, etc, are detailed in this Chapter.
In accordance with the EM&A Manual, 1-hour and 24-hour TSP levels monitoring are to be conducted during the construction phase. Table 2.1 summarizes the monitoring parameters, frequency and duration of air quality monitoring.
Table 2.1: Air Quality Monitoring Parameters, Frequency and Duration
|
Parameter |
Frequency and Duration |
|
|
ASR1, ASR2A, ASR3 & ASR4 |
24-hour TSP |
At least once in every six-days |
|
1-hour TSP |
3 times every six-days |
The
four air quality monitoring stations were established in the EM&A manual
and were slightly adjusted during the baseline monitoring phase. Locations of
the agreed air quality monitoring stations are listed in Table 2.2 and as shown in Figure 2.1.
Table 2.2: Air Monitoring Stations
|
Monitoring Stations |
Locations |
|
ASR1 |
Works Site Boundary |
|
ASR2A |
At the rooftop of refuse collection point,
which is located at the southwest of the project area |
|
ASR3 |
At the commercial centre at Palm Springs,
which is located at the south of the project area |
|
ASR4 |
Works Site Boundary |
Continuous
24-hour TSP air quality monitoring is conducted using High Volume Sampler (HVS) (Model: GMWS-2310
Accu-vol). The HVS meets all the requirements of the EM&A Manual. Portable
direct reading dust meters were used to carry out the 1-hour TSP monitoring. Table 2.3 summarizes the equipment used
in the impact
air quality monitoring.
Table 2.3: TSP Monitoring Equipment
|
Equipment |
Model |
|
24-hr TSP monitoring |
|
|
High Volume Sampler |
GMWS 2310 Accu-vol |
|
Calibrator |
GMW 25 |
|
1-hr TSP monitoring |
|
|
Portable direct reading dust meter |
AM510 SidePak Personal Aerosol Monitor Dust Trak 8520 |
Installation
The HVS was installed in the vicinity of the air sensitive receiver. The following criteria were considered in the installation of the HVS.
Preparation of Filter Papers
· Glass fibre filters, were labelled and sufficient filters that were clean and without pinholes were selected.
· All filters were equilibrated in the conditioning environment for 24 hours before weighing. The conditioning environment temperature was around 25 °C and not variable by more than ±3 °C with relative humidity (RH) < 50 % and was not variable by more than ±5 %. A convenient working RH was 40 %.
Field Monitoring
· The power supply was checked to ensure the HVS works properly.
· The filter holder and the area surrounding the filter were cleaned.
· The filter holder was removed by loosening the four bolts and a new filter, with stamped number upward, on a supporting screen was aligned carefully.
· The filter was properly aligned on the screen so that the gasket formed an airtight seal on the outer edges of the filter.
· The swing bolts were fastened to hold the filter holder down to the frame. The pressure applied should be sufficient to avoid air leakage at the edges.
· The shelter lid was closed and was secured with the aluminium strip.
· The HVS was warmed-up for about 5 minutes to establish run-temperature conditions.
· A new flow rate record sheet was set into the flow recorder.
· The flow rate of the HVS was checked and adjusted at around 1.1 m3/min. The range specified in the EM&A Manual was between 0.6-1.7 m3/min.
· The programmable timer was set for a sampling period of 24 hrs + 1 hr, and the starting time, weather condition and the filter number were recorded.
· The initial elapsed time was recorded.
· At the end of sampling, the sampled filter was removed carefully and folded in half length so that only surfaces with collected particulate matter were in contact.
· It was then placed in a clean plastic envelope and sealed.
· All monitoring information was recorded on a standard data sheet.
· Filters were sent to a HOKLAS accredited laboratory for analysis.
Maintenance and Calibration
· The HVS and its accessories are maintained in good working condition, such as replacing motor brushes routinely and checking electrical wiring to ensure a continuous power supply.
· HVSs were calibrated at two-month intervals.
· Calibration records for HVSs are shown in Appendix E.
Field Monitoring
The measuring procedures of the 1-hour dust meter are in accordance with the Manufacturer’s Instruction Manual as follows:
· Set POWER to “ON”, push BATTERY button, make sure that the meter’s indicator is in the range with a red line and allow the instrument to stand for about 3 minutes (Then, the air sampling inlet has been capped).
· Push the knob at MEASURE position.
· Push “O-ADJ” button. (Then meter’s indication is 0).
· Push the knob at SENSI ADJ position and set the meter’s indication to S value described on the Test Report using the trimmer for SENSI ADJ.
· Pull out the knob and return it to MEASURE position.
· Push “START” button.
Maintenance and Calibration
· The 1-hour dust meter would be checked at 3-month intervals and calibrated at 1-year intervals throughout all stages of the air quality monitoring.
· Calibration records for direct dust meters are shown in Appendix E.
Following the requirements in the EM&A Manual for noise, noise monitoring has to be carried out during the construction phase. Continuous noise monitoring for the A-weighted levels Leq, L10 and L90 is undertaken once per every week.
Table 2.4 summarizes the monitoring parameters, frequency and duration of air quality monitoring.
Table 2.4: Noise Monitoring Parameters, Frequency and Duration
|
Monitoring Stations |
Parameter |
Frequency and Duration |
|
NSR1, NSR3, NSR5,
NSR7 |
Leq, L90
& L10 |
Once every week |
The
four noise
quality monitoring stations were established in the EM&A manual and were
slightly adjusted during the baseline monitoring phase. Locations of the agreed
noise
quality monitoring stations are listed in Table
2.5 and as shown in Figure 2.2.
Table 2.5: Noise Monitoring Stations
|
Monitoring Stations |
Locations |
Type of measurement |
|
NSR1 |
Noise monitoring equipment was set up near
the boundary wall at Palm Springs. |
Free-field |
|
NSR3 |
The monitoring station was located next to
the guard house at Palm Springs. |
Facade |
|
NSR5 |
The monitoring station was located within
the work site boundary. |
Free-field |
|
NSR7 |
The monitoring station was located near the boundary
wall of the house of Mai Po San Tsuen. |
Free-field |
Integrating Sound Level Meter will be used for noise monitoring. It is a Type 1 sound level meter capable of giving a continuous readout of the noise level readings including equivalent continuous sound pressure level (Leq) and percentile sound pressure level (Lx). They comply with International Electrotechnical Commission Publications 651:1979 (Type 1) and 804:1985 (Type 1). Table 2.6 summarizes the noise monitoring equipment model being used.
Table 2.6: Noise Monitoring Equipment
|
Monitoring Stations |
Equipment Model |
|
|
Integrating Sound Level Meter |
Calibrator |
|
|
NSR1 |
Rion NL-52 |
Rion NC-73 |
|
NSR3 |
||
|
NSR5 |
||
|
NSR7 |
||
Field Monitoring
- frequency weighting: A
- time weighting: Fast
- time measurement: 30 minutes intervals (between 07:00 and 19:00)
Maintenance and Calibration
In
accordance with the requirements in the EM&A Manual for water quality, water quality parameters including Dissolved Oxygen
(DO), temperature, pH, turbidity, suspended solids (SS) and Biochemical Oxygen
Demand (BOD) have to be monitored at designated monitoring stations during
construction of the Project. DO, temperature and
pH were measured in-situ whereas SS and BOD were analysed in a laboratory. The measurements should be taken at all designated monitoring
stations, three days per week. The interval between any two sets of monitoring
was not less than 36 hours. Table 2.7 summarizes
the monitoring parameters, frequency and duration of water quality monitoring.
Table 2.7: Water Quality Monitoring Parameters, Frequency and Duration
|
Monitoring Stations |
Parameter |
Frequency and Duration |
|
MP1, MP2, MP3, MP4,
MP5 & MP6 |
DO, temperature, pH,
SS, turbidity, BOD |
Three days every
week |
The
six water quality monitoring stations were
established in the EM&A manual. Locations of the agreed water quality monitoring stations are listed in
Table 2.8 and as shown in Figure 2.3..
Table 2.8: Water Quality Monitoring Stations
|
Monitoring Stations |
Easting |
Northing |
|
MP1 |
838 730.50 |
822 862.25 |
|
MP2 |
838 933.26 |
823 247.41 |
|
MP3 |
839 107.17 |
823 596.84 |
|
MP4 |
839 286.14 |
823 638.55 |
|
MP5 |
839 134.35 |
823 722.99 |
|
MP6 |
839 063.02 |
823 842.25 |
The Water Quality Monitoring Equipment and Analytical Methods applied to Water Quality Samples are given in Table 2.9 and Table 2.10 respectively. Details of which are discussed below.
Table 2.9: Water Quality Monitoring Equipment
|
Equipment |
Model |
Equipment/Serial Number |
|
Conductivity,
Dissolved oxygen, pH, Salinity and Temperature Measuring Meter |
YSI
Professional Plus |
10D101565 |
|
Turbidity
Meter |
Hach
2100Q IS |
13120C004242 |
|
Global
Positioning System (GPS) |
Garmin eTrex Vista |
ENO 007 |
Table 2.10: Analytical Methods applied to Water Quality Samples
|
Determinant, unit |
Standard Method |
|
Total
Suspended Solids, mg/L |
In house
method based on APHA 2540D; ALS Method Code: EA-025 |
|
Biochemical
Oxygen Demand (BOD), mg/L |
In house
method based on APHA 5210B; ALS Method Code: EP-030 |
All
in-situ monitoring instruments were checked, calibrated and certified by a
laboratory accredited
under HOKLAS or any other international accreditation scheme before use.
Dissolved Oxygen (DO), temperature and pH measuring equipment
A portable, weatherproof multiparameter instrument (YSI Professional Plus) was used in the monitoring. It can be capable for measuring dissolved oxygen (DO), pH, and temperature simultaneously with the following limits:
· a dissolved oxygen level in the range of 0-50 mg/L and 0-500 % saturation;
· a temperature of -5 to 45 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 2100Q) 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 Vista)
was used to identify the designated monitoring stations prior to water sampling.
Suspended Solids and BOD Measurements (Sample Containers and Storage)
Water samples for SS analysis were stored in
high density polythene bottles with no preservative added, packed in ice
(cooled to 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.
The limits of detection for the in-situ and
laboratory measurements are shown in Table 2.11.
Table 2.11: Detection Limits for Water Quality Determinants
|
Determinant |
Limit of Detection |
|
Dissolved Oxygen |
0.1 mg/L |
|
Temperature |
0.1 degree Celsius |
|
pH |
0.01 unit |
|
Turbidity |
0.1 NTU |
|
Suspended Solids |
1 mg/L |
|
BOD |
2 mg/L |
In situ measurement
All pH meters, DO/temperature meters had been checked and calibrated prior to use. Standard buffer solution of at least two pH levels (either pH 4 and pH 7, or pH 7 and pH 10) had been used for calibration of the instrument before and after use.
DO meters had been calibrated by a laboratory accredited under HOKLAS or any other international accreditation scheme, and subsequently re-calibrated at three-monthly intervals throughout all stages of the water quality monitoring. Responses of sensors and electrodes had been checked with certified standard solutions before each use. Wet bulb calibrations for all DO meters had been carried out before measurement at each monitoring location. For the on-site calibration of field equipment, BS 127:1993, "Guide to field and on-site test methods for the analysis of waters" had been observed.
Measurements shall be at three water depths, namely, 1m below water surface, mid-depth and 1m above stream bed/pond bed, except where the water depth less that 6m, the mid-depth station maybe omitted. Should the water depth be less than 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 equipment used for in-situ monitoring of water quality are attached in Appendix E.
Target species and certain other fauna will be monitored within the Project Area and Assessment Area during the wetland and residential construction phase. This will be important to ensure that any unexpected events or impacts either on- or off-site are quickly identified so that remedial action can be taken. The groups to be monitored and frequency of monitoring are shown in Table 2.12.
Table 2.12: Summary of Construction Phase Ecological Monitoring for the Wo Shang Wai Wetland Restoration Area (WRA)
|
Species / Parameter |
Construction Phase Ecological Monitoring |
|
Birds |
Weekly (including Assessment Area). |
|
Dragonflies and Butterflies |
Once per month during March and September
to November, and twice per month during April to August. |
|
Herpetofauna |
Once per month during April to November. |
|
Water Quality |
After filling of WRA with water, monthly
for in situ water quality and every
six months (end of the wet season and end of the dry season) for laboratory
testing. |
|
Site Inspections |
Weekly. |
Ecological
monitoring locations during
construction phase are shown in Figure 4.1 and the methodology for ecological monitoring
is detailed in Section 4.
All measures undertaken by both the Contractor and the specialist Landscape Sub-Contractor during the construction phase and first year of the operational phase shall be audited by a Registered Landscape Architect, as a member of the ET, on a regular basis to ensure compliance with the intended aims of the measures. Site inspections should be undertaken at least once every two weeks throughout the construction period and once every two months during the operational phase.
The broad scope
of audit is detailed below but should also be undertaken with reference to the
more specific checklist provided in Table
2.13 below. Operational phase auditing will be restricted to the last 12
months of the establishment works of the landscaping proposals and thus only
the items below concerning this period are relevant to the operational phase.
·
The extent of the agreed works area should be regularly
checked during the construction phase. Any trespass by the Contractor outside
the limit of the works, including any damage to existing trees and woodland
shall be noted;
·
The progress of the engineering works should be regularly
reviewed on site to identify the earliest practical opportunities for the
landscape works to be undertaken;
·
All existing vegetation, streams and other features within
the study area which are not directly affected by the works are retained and
protected;
·
The methods of protecting existing vegetation proposed by the
Contractor are acceptable and enforced;
·
Preparation, lifting transport and re-planting operations for
any transplanted trees;
·
The layout, design and construction of buildings conforms to
requirements specified in the EIA report;
·
All landscaping works are carried out in accordance with the
EIA recommendations and with specifications;
·
The planting of new trees, shrubs, groundcover, climbers,
grasses and other plans, together with the replanting of any transplanted trees
are carried out properly and within the right season;
·
All necessary horticultural operations and replacement
planting are undertaken throughout the Establishment Period to ensure the
healthy establishment and growth of both transplanted trees and all newly
establishment plants.
Table 2.13: Construction and Operation Phase Audit Checklist
|
Area of Works |
Items to be Monitored |
|
Works Area |
Check the extent of the
Works to ensure that the Works Area is not exceeded |
|
Protection of all trees and woodland blocks to be retained |
Identification and demarcation of trees / vegetation to be retained,
erection of physical protection (e.g. fencing), monitoring against possible
incursion, physical damage, fire, pollution, surface erosion, etc. |
|
Streams |
Ensure no run-off into existing streams |
|
Clearance of existing vegetation |
Identification and demarcation of trees / vegetation to be cleared,
checking of extent of works to minimize damage, monitoring of adjacent areas
against possible incursion, physical damage, fire, pollution, surface
erosion, etc. |
|
Transplanting of trees |
Identification and demarcation of trees / vegetation to be transplanted,
monitoring of extent of pruning / lifting works to minimize damage, timing of
operations implementation of all stages of preparatory and translocation
works, and maintenance of transplanted vegetation, etc. |
|
Topsoil stripping |
Ensuring existing topsoil is stripped and stored under recognized good
practice and is hydroseeded and regularly turned to prevent anaerobic
conditions |
|
New buildings |
Ensure that building finishes accord with mitigation proposals with
regard to colour and albedo. |
|
Boundaries |
Ensuring hoarding are erected as required |
|
Noise Barrier |
Ensure noise barrier design accords with the mitigation proposals with
regard to location, materials and finishes. |
|
Night-time lighting |
Ensuring night-time lighting is directional, hooded and shielded away
from VSRs |
|
Plant supply |
Monitoring of operations relating to the supply of specialist plant
material (including the collecting, germination and growth of plants from
seed) to ensure that plants will be available in time to be used within the
construction works. |
|
Landscape and wetland treatments generally |
Check that wetland, and hard / soft landscape designs conform to intent
of mitigation measures and agreed designs |
|
Soiling, planting, etc. |
Monitoring of implementation and maintenance of soiling and planting
works against possible incursion, physical damage, fire, pollution, surface
erosion, etc. |
|
Establishment Works |
Monitoring of implementation of maintenance operation during
Establishment Period |
The monitoring locations should check
against the mitigation measures proposed under the approved Environmental
Impact Assessment, which are summarised as follows in Table
2.14
and Table
2.15:
Table 2.14: Proposed Construction Phase Mitigation Measures
|
ID No. |
Landscape and Visual Mitigation 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 trees
(of Heavy Standard size) should be planted.
Where space permits, roadside berms should be created. Street trees
should be of species that reach a mature height of no less than 15m. |
|
OM4 |
Maximise
freshwater habitat wetland creation consistent with achieving other
parameters. Minimum 4.74 ha to be
provided. Wetlands must have natural
edge profiles with >1m wide emergent zone.
No access to the wetland by residents and all wetlands must be
screened from residential development by a continuous tree screen at
interface with residential development or earth mounding such that
disturbance is minimised. Implementation of the wetland shall be carried out
as advance works. |
|
OM5 |
Use
appropriate (visually unobtrusive and non-reflective) building materials and
colours in built structures. |
|
OM6 |
During
detailed design, refine building layout to create a min. 10m wide gap between
buildings north of Wo Shang Wai pond and also two min. 10m wide gaps in the
row of buildings adjacent to Royal Palms. |
|
OM7 |
Streetscape
elements (e.g. paving, signage, street furniture, lighting etc.) shall be
sensitively designed in a manner that responds to the local context, and
minimises potential negative landscape and visual impacts. Lighting units should be directional and
minimise unnecessary light spill. |
Impact monitoring for air quality (dust),
noise and water quality due to the construction work were undertaken during the
reporting month in compliance with the EM&A manual in the reporting period.
Regular site inspections were carried out on 8, 15, 22 and 29 July 2014 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. The weather conditions in the reporting period are provided in Appendix G.
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 |
||||||||
|
04-Jul-14 |
12:54 |
68 |
71 |
76 |
57-84 |
378 |
500 |
|
|
10-Jul-14 |
12:53 |
59 |
57 |
60 |
||||
|
16-Jul-14 |
12:57 |
78 |
83 |
84 |
||||
|
22-Jul-14 |
12:55 |
78 |
83 |
84 |
||||
|
28-Jul-14 |
12:56 |
58 |
64 |
67 |
||||
|
ASR2A |
||||||||
|
04-Jul-14 |
08:55 |
67 |
65 |
70 |
52-79 |
357 |
500 |
|
|
10-Jul-14 |
08:36 |
55 |
52 |
57 |
||||
|
16-Jul-14 |
08:55 |
70 |
72 |
79 |
||||
|
22-Jul-14 |
08:58 |
70 |
78 |
79 |
||||
|
28-Jul-14 |
08:51 |
68 |
65 |
63 |
||||
|
ASR3 |
||||||||
|
04-Jul-14 |
08:34 |
72 |
68 |
66 |
51-78 |
358 |
500 |
|
|
10-Jul-14 |
08:14 |
51 |
56 |
58 |
||||
|
16-Jul-14 |
08:33 |
74 |
78 |
76 |
||||
|
22-Jul-14 |
08:37 |
65 |
70 |
76 |
||||
|
28-Jul-14 |
08:32 |
64 |
68 |
69 |
||||
|
ASR4 |
||||||||
|
04-Jul-14 |
12:30 |
80 |
78 |
77 |
62-90 |
372 |
500 |
|
|
10-Jul-14 |
12:30 |
62 |
67 |
68 |
||||
|
16-Jul-14 |
12:31 |
83 |
90 |
84 |
||||
|
22-Jul-14 |
12:30 |
80 |
84 |
79 |
||||
|
28-Jul-14 |
12:31 |
70 |
68 |
73 |
||||
Results of 24-hour TSP at the four monitoring locations are summarised in Table 3.2. Graphical plots of the monitoring results are shown in Appendix F. The weather conditions in the reporting period are provided in Appendix G.
Table 3.2: Summary of 24-hour TSP Monitoring Results
|
Monitoring Date |
Monitoring Results
(μg/m3) |
Range (μg/m3) |
Action Level
(μg/m3) |
Limit Level
(μg/m3) |
|
ASR1 |
|
|
|
|
|
04-Jul-14 |
69 |
69-93 |
226 |
260 |
|
10-Jul-14 |
80 |
|||
|
16-Jul-14 |
83 |
|||
|
22-Jul-14 |
92 |
|||
|
28-Jul-14 |
93 |
|||
|
ASR2A |
|
|
|
|
|
04-Jul-14 |
72 |
63-94 |
213 |
260 |
|
10-Jul-14 |
63 |
|||
|
16-Jul-14 |
89 |
|||
|
22-Jul-14 |
94 |
|||
|
28-Jul-14 |
86 |
|||
|
ASR3 |
|
|
|
|
|
04-Jul-14 |
78 |
67-98 |
205 |
260 |
|
10-Jul-14 |
67 |
|||
|
16-Jul-14 |
75 |
|||
|
22-Jul-14 |
98 |
|||
|
28-Jul-14 |
98 |
|||
|
ASR4 |
|
|
|
|
|
04-Jul-14 |
81 |
72-115 |
237 |
260 |
|
10-Jul-14 |
72 |
|||
|
16-Jul-14 |
85 |
|||
|
22-Jul-14 |
104 |
|||
|
28-Jul-14 |
115 |
No exceedance of 1-hour and 24-hour TSP (Action or Limit Level) was recorded in the reporting period.
The construction noise monitoring results are summarized in Table 3.3. Graphical plots of the monitoring data are shown in Appendix F. The weather conditions in the reporting period are provided in Appendix G.
Table 3.3: Summary of Construction Noise Monitoring Results
|
Monitoring Date |
Start Time |
Mean & Range of
Noise Levels, dB(A) |
Limit Level for Leq (dB) |
||
|
Leq |
L10 |
L90 |
|||
|
NSR1 |
|
|
|
|
> 75 |
|
04-Jul-14 |
09:12 |
45 |
50 |
34 |
|
|
10-Jul-14 |
08:54 |
55 |
57 |
45 |
|
|
16-Jul-14 |
09:12 |
50 |
53 |
44 |
|
|
22-Jul-14 |
09:14 |
51 |
53 |
44 |
|
|
28-Jul-14 |
09:08 |
51 |
53 |
43 |
|
|
NSR3 |
|
|
|
|
|
|
04-Jul-14 |
10:00 |
56 |
60 |
39 |
|
|
10-Jul-14 |
09:39 |
55 |
55 |
49 |
|
|
16-Jul-14 |
10:00 |
54 |
57 |
45 |
|
|
22-Jul-14 |
10:01 |
49 |
50 |
43 |
|
|
28-Jul-14 |
09:53 |
49 |
51 |
42 |
|
|
NSR5 |
|
|
|
|
|
|
04-Jul-14 |
13:03 |
44 |
45 |
39 |
|
|
10-Jul-14 |
13:02 |
58 |
59 |
53 |
|
|
16-Jul-14 |
13:06 |
57 |
61 |
48 |
|
|
22-Jul-14 |
13:00 |
49 |
51 |
45 |
|
|
28-Jul-14 |
13:03 |
56 |
59 |
47 |
|
|
NSR7 |
|
|
|
|
|
|
04-Jul-14 |
13:53 |
49 |
52 |
43 |
|
|
10-Jul-14 |
13:51 |
67 |
68 |
61 |
|
|
16-Jul-14 |
13:54 |
65 |
67 |
62 |
|
|
22-Jul-14 |
13:50 |
65 |
67 |
59 |
|
|
28-Jul-14 |
13:53 |
64 |
66 |
59 |
|
No exceedance (Action/Limit Level) of construction noise was recorded in the reporting period.
The water quality monitoring results are summarized in Table 3.4. Graphical plots of the monitoring data are shown in Appendix F. The weather conditions in the reporting period are provided in Appendix G.
Table 3.4: Summary of Water Quality Monitoring Results
|
Monitoring
Date |
Temp (oC) |
pH |
Dissolved Oxygen (DO) (mg/L) |
DO (%) |
Turbidity (NT) |
BOD (mg/L) (1) |
Suspended Solids (mg/L) |
|
MP3 |
|
|
|
|
|
|
|
|
02/07/2014 |
27.8 |
7.4 |
5.6 |
81.4 |
49.1 |
3 |
13.5 |
|
04/07/2014 |
28.9 |
7.4 |
6.6 |
86.0 |
25.4 |
5 |
22 |
|
07/07/2014 |
26.4 |
7.5 |
5.8 |
85.3 |
20.3 |
4 |
15.5 |
|
09/07/2014 |
26.7 |
7.5 |
7.3 |
91.7 |
20.1 |
3 |
15.5 |
|
11/07/2014 |
27.3 |
7.5 |
5.9 |
84.7 |
19.8 |
4 |
19 |
|
14/07/2014 |
26.8 |
7.5 |
5.8 |
85.1 |
13.1 |
2.5 |
11 |
|
16/07/2014 |
26.9 |
7.5 |
6.0 |
84.1 |
22.2 |
3 |
11 |
|
18/07/2014 |
27.4 |
7.5 |
6.3 |
86.6 |
28.9 |
4.5 |
56.5 |
|
21/07/2014 |
27.2 |
7.5 |
6.8 |
90.0 |
21.3 |
4 |
17.5 |
|
23/07/2014 |
27.3 |
7.5 |
6.4 |
90.5 |
14.9 |
3.5 |
17 |
|
25/07/2014 |
26.7 |
7.5 |
6.8 |
82.5 |
20.1 |
4 |
12.5 |
|
28/07/2014 |
27.4 |
7.5 |
7.1 |
96.5 |
21.2 |
4 |
18 |
|
30/07/2014 |
27.8 |
7.5 |
7.0 |
89.2 |
22.6 |
3 |
14.5 |
|
Action Level |
- |
<5.5 or >7.5 |
<6.85 |
- |
>64 |
- |
>65 |
|
Limit Level |
- |
<4.0 or >8.0 |
<6.65 |
- |
>67 |
- |
>66 |
|
|
|
|
|
|
|
|
|
|
MP4 |
|
|
|
|
|
|
|
|
02/07/2014 |
27.6 |
7.4 |
5.1 |
75.5 |
18.2 |
2 |
38 |
|
04/07/2014 |
29.1 |
7.4 |
6.4 |
84.0 |
33.3 |
5 |
24.5 |
|
07/07/2014 |
27.1 |
7.4 |
6.4 |
94.3 |
24.1 |
7 |
26.5 |
|
09/07/2014 |
27.1 |
7.4 |
6.4 |
81.3 |
23.3 |
6.5 |
17.5 |
|
11/07/2014 |
27.1 |
7.4 |
5.7 |
81.9 |
21.7 |
3 |
19.5 |
|
14/07/2014 |
27.0 |
7.4 |
6.2 |
90.5 |
33.2 |
3.5 |
26.5 |
|
16/07/2014 |
27.3 |
7.4 |
6.1 |
86.7 |
47.0 |
3 |
21 |
|
18/07/2014 |
27.7 |
7.4 |
6.2 |
85.4 |
45.8 |
4 |
62.5 |
|
21/07/2014 |
27.1 |
7.4 |
6.3 |
83.6 |
25.1 |
4.5 |
26.5 |
|
23/07/2014 |
27.1 |
7.4 |
6.0 |
85.1 |
18.9 |
4.5 |
18 |
|
25/07/2014 |
26.9 |
7.4 |
6.6 |
80.7 |
22.5 |
5 |
14.5 |
|
28/07/2014 |
27.2 |
7.4 |
6.6 |
90.1 |
32.2 |
3 |
35.5 |
|
30/07/2014 |
27.9 |
7.4 |
6.4 |
81.4 |
33.9 |
4 |
26.5 |
|
Action Level |
- |
<5.5 or >7.5 |
<3.91 |
- |
>60 |
- |
>50 |
|
Limit Level |
- |
<4.0 or >8.0 |
<3.82 |
- |
>64 |
- |
>53 |
|
|
|
|
|
|
|
|
|
|
MP5 |
|
|
|
|
|
|
|
|
02/07/2014 |
28.0 |
7.4 |
5.7 |
83.9 |
37.7 |
2.5 |
26.5 |
|
04/07/2014 |
29.3 |
7.4 |
7.3 |
95.6 |
28.8 |
5 |
25 |
|
07/07/2014 |
26.8 |
7.4 |
6.0 |
88.3 |
23.4 |
5.5 |
26 |
|
09/07/2014 |
26.8 |
7.4 |
6.7 |
84.5 |
25.5 |
6 |
17.5 |
|
11/07/2014 |
26.9 |
7.4 |
6.0 |
85.5 |
20.5 |
3 |
19 |
|
14/07/2014 |
27.1 |
7.4 |
6.4 |
93.3 |
28.4 |
3.5 |
25.5 |
|
16/07/2014 |
27.1 |
7.4 |
5.9 |
83.2 |
41.1 |
4 |
14.5 |
|
18/07/2014 |
27.1 |
7.4 |
6.8 |
92.1 |
42.6 |
4 |
60.5 |
|
21/07/2014 |
26.9 |
7.4 |
6.7 |
89.0 |
27.4 |
4 |
28.5 |
|
23/07/2014 |
27.2 |
7.4 |
6.2 |
88.4 |
24.5 |
6 |
30.5 |
|
25/07/2014 |
27.1 |
7.4 |
7.3 |
90.3 |
22.0 |
4.5 |
13.5 |
|
28/07/2014 |
27.3 |
7.4 |
6.3 |
86.5 |
29.3 |
3 |
27 |
|
30/07/2014 |
27.7 |
7.4 |
7.1 |
91.0 |
29.3 |
4 |
19.5 |
|
Action Level |
- |
<5.5 or >7.5 |
<4.13 |
- |
>81 |
- |
>66 |
|
Limit Level |
- |
<4.0 or >8.0 |
<3.87 |
- |
>84 |
- |
>69 |
|
|
|
|
|
|
|
|
|
|
MP6 |
|
|
|
|
|
|
|
|
02/07/2014 |
28.2 |
7.4 |
5.8 |
84.6 |
47.4 |
2 |
32 |
|
04/07/2014 |
29.3 |
7.4 |
6.1 |
80.9 |
29.1 |
5 |
25 |
|
07/07/2014 |
26.9 |
7.4 |
5.9 |
87.1 |
26.1 |
5 |
21 |
|
09/07/2014 |
26.9 |
7.4 |
6.5 |
82.1 |
26.1 |
6 |
20.5 |
|
11/07/2014 |
27.0 |
7.4 |
6.6 |
93.3 |
20.3 |
3 |
20 |
|
14/07/2014 |
26.9 |
7.4 |
6.3 |
92.3 |
28.9 |
4 |
24 |
|
16/07/2014 |
27.5 |
7.4 |
6.3 |
89.4 |
43.3 |
3.5 |
21 |
|
18/07/2014 |
27.3 |
7.4 |
6.0 |
83.1 |
35.8 |
4 |
63 |
|
21/07/2014 |
27.0 |
7.4 |
6.6 |
87.7 |
22.6 |
4 |
26.5 |
|
23/07/2014 |
27.0 |
7.4 |
5.9 |
83.6 |
25.1 |
6 |
25 |
|
25/07/2014 |
27.2 |
7.4 |
6.6 |
81.5 |
21.3 |
5 |
13 |
|
28/07/2014 |
27.1 |
7.4 |
5.8 |
79.9 |
29.9 |
3 |
32 |
|
30/07/2014 |
27.6 |
7.4 |
6.8 |
86.9 |
33.0 |
4 |
24 |
|
Action Level |
- |
<5.5 or >7.5 |
<4.61 |
- |
>94 |
- |
>75 |
|
Limit Level |
- |
<4.0 or >8.0 |
<4.52 |
- |
>96 |
- |
>75 |
Notes:
(1) “<2 “ : BOD value
is too low to indicate (<2mg/L).
(2) Values Bold indicate Action Level exceedance.
(3) Values Underlined and Bold indicate
Limit Level exceedance.
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 site formation and
foundation work, as well as pond drainage management in the Wetland Restoration
Area (to lower the water level and remove unwanted species in the pond). 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 and installing a barrier at the discharge outlet to
desilt and divert site runoff to sedimentation tanks and wastewater treatment
facilities (Aquased), which will ensure all site runoff is treated to
satisfactory quality before discharging into the northern ditches.
Exceedances of DO at MP3
During the reporting month at MP3,
exceedance of the Action/Limit Level of DO was observed on 10 monitoring dates.
As understood, the fish pond near the site (represented by MP3) was being
separated from the construction site by the WRA since November 2010, so the
exceedances were not considered to be related to the construction activities.
The exceedances of DO may be due to external factors such as pond fish culture
activities which were out of the control of the project.
Exceedance of SS at MP4
During the
reporting month, Action/Limit Level exceedance of SS was observed at MP4 on 18
July 2014.
From Hong
Kong Observatory (HKO) records, total rainfall recorded at HKO during the
reporting month was 260.5 mm, which was below the 1981-2010 climatological
normal for the same month of 376.5 mm. The heaviest rain fell on 17 and 22 July
2014 when 34.5 and 35.7 mm of rain were recorded respectively at HKO. Amber
Rainstorm Warning was issued on 22 and 24 July 2014. In addition, tropical
cyclone warning signal was issued on 16-19 July 2014, however Strong Monsoon
Signal and Special Announcement on Flooding in the northern New Territories
were not issued. Furthermore, it was noted that at least a trace of rainfall
was recorded by HKO on 23 of the 31 days during the reporting month, including
the relevant day of SS exceedance.
The
persistent rainfall throughout the reporting month may have caused a large amount of surface runoff from
all sources in the vicinity of the open ditch. It is believed that the runoff increased the turbulence
and thus resulted in higher SS inside the ditch water on the day of SS exceedance.
Increased SS recorded at MP5 and MP6 (i.e. upstream of MP4) on the same day are
also noted. These factors may have caused the colour of
the water body in the ditch to become brown at MP4 on 18 July 2014.
Also, the site effluent was effectively treated
by the AquaSed system and discharged from the site at a low, controlled rate
during the reporting month.
Conclusion
As a result, the abovementioned
exceedances are unlikely to be due to the construction works and therefore not
considered to be related to the project.
This report
documents surveys conducted in the Survey Area between 1 and 31 July 2014. The
Wetland Restoration Area (WRA) is also surveyed as the area is accessible and
site formation works for WRA has been completed. The updated survey transect is provided in Figure 4.1. Dates and ecological surveys
conducted during this period are summarised in Appendix H.
Monitoring
was undertaken following the survey methodology in the EM&A Manual. A
transect was followed in the bird surveys (see Figure 4.1). All bird species were identified
to species and all bird species of conservation importance and/or wetland
dependent were enumerated and recorded to the habitats in which they were
observed. Flying birds were not recorded unless they were foraging and/or
associated with the habitat (such as swifts). Further, notable bird
observations during other surveys were also recorded.
Bird surveys were conducted on a weekly basis.
A total of 25 bird species were recorded in the Survey Area (excluding the
WRA), 13 of which were species of conservation importance and/or
wetland-dependence. Within the WRA, 29 bird species were recorded, 14 of which
were species of conservation importance and/or wetland-dependent species,
including two of the target species (i.e. Little Egret, Chinese Pond Heron)
were recorded in regular survey. The WRA continues to attract a number of
species of conservation importance, including Yellow Bittern, Ixobrychus sinensis and Wood Sandpiper, Tringa glareola, in regular survey and
additional night search. These species are listed by Fellowes et al. as of “Local Concern” in 2002.
One day
time and one night time herpetofauna survey were conducted in the period. One
amphibian species were recorded in the Survey Area (excluding the WRA) in
regular survey but no reptile species was recorded in the Survey Area
(excluding the WRA) in regular survey and additional search. No amphibian
species and reptile species were recorded within the WRA in regular survey and
additional search.
A summary of the survey findings is provided in Appendix J.
Odonatas and butterflies
surveys were conducted on a bi-weekly basis according to the EM&A Manual.
Five odonata species and one butterfly species were recorded in the Survey Area
(excluding the WRA). Within the WRA, nine odonata species were recorded, while
eight butterfly species were recorded.
A summary of the survey findings is provided in Appendix J.
Monitoring of
mammals was conducted concurrently with other surveys. No mammals were recorded in the Survey Area nor within the
WRA during regular survey. In additional
night search, Japanese Pipistrelle was recorded within the WRA.
A summary of the survey findings is provided
in Appendix J.
The pH of Cell 1 and Cell 4 reached the action
level during the reporting period. Monitoring data are presented in Appendix K.
Removal of exotic vegetation in all cells was
undertaken; these included but not limited to Ipomoes sp., Mikania sp.,
Mimosa sp., Pennisetum sp. and Typha
sp..
All
sighted Red Fire Ant nests were treated with approved pesticide.
Ecological monitoring during July 2014 was carried out according to the
survey methodology and frequency outlined in the EM&A Manual.
Summary of
survey findings is listed in Table 4.1 below:
Table 4.1: Summary of Ecological Monitoring in WRA and Survey Area
|
Species |
Survey Area (excluding WRA) |
WRA |
|
Birds (total) |
25 |
29 |
|
Birds (of conservation importance and/or
wetland-dependence) |
13 |
14 |
|
Amphibians |
1 |
0 |
|
Reptiles |
0 |
0 |
|
Mammals |
0 |
1 |
|
Odonates |
5 |
9 |
|
Butterflies |
1 |
8 |
Survey findings indicate that the ponds within the Survey
Area supported numbers and diversity of wetland-dependent birds typical of fish
pond areas. The WRA continues to attract
wetland dependent fauna and serves as a buffer between the residential portion
and the fishponds in the north.
The EM&A
programme for Landscape and Visual impact due to the construction commenced in
June 2010 and continued during the reporting period. Site inspections on
Landscape and Visual impact were carried out on 14 and 29 July 2014 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 below in Table 5.1. Representative
photos showing the implementation of mitigation measures are presented in Appendix M.
Table 5.1: Construction and Operation Phase Audit Summary
|
Area of Works |
Items 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 – Palm Springs boundary. (Appendix M Photo 1 –
Table 2.14 CM2 refers) No construction
works were observed to have exceeded the site boundaries. No construction was carried out at the wetland
restoration area after 15 November 2010. |
|
|
Protection of all
trees and woodland blocks to be retained |
Trees retained
within the site along the northeast boundary, beside wetland restoration
area, have been identified and protected by temporary protective fencing. |
|
|
Streams |
The works site is
partly encircled by a berm / perimeter channel to intercept surface water
and prevent it from washing off into any of the neighboring sites. Surface water is collected within the site
in a temporary drainage channel.
Gravels beds and barriers have been installed to filter site runoff,
sedimentation ponds have been provided to enable primary treatment before
discharge to mains drains. |
|
|
Clearance of
existing vegetation |
Site clearance was
completed prior to the commencement of construction. |
|
|
Transplanting of
trees |
Tree transplanting
has been completed, with the trees relocated to various points within the
planting strip along the southern boundary of the site, outside the noise
barrier. The trees continue to
re-establish well. |
|
|
Topsoil stripping |
Suitable pond bund and soil material which had been excavated and
stockpiled from the original site, has now been re-used within the landscape
works. Dust suppression
measures are active along all internal site access tracks. |
|
|
New buildings |
No new permanent
buildings have yet been constructed on site. |
|
|
Boundaries |
Hoardings have
been erected along most of the boundaries of the site. Installation of new screen fence between
the future residential sites and the constructed wetland restoration areas
is complete. Fence has been painted green to match with the surrounding
vegetated environment. (Appendix M Photo 1 –
Table 2.14 CM2 refers) |
|
|
Noise Barrier |
Noise barriers
have been installed along the southern and western boundaries of the site in
accordance with the contract requirements.
Their design complies with the mitigation requirements, with upper 6
to 7m portion of the barrier being made from a translucent material with
green tinted (to match with the environment). Supporting GMS structure,
likewise, has been painted green. (Appendix M Photo 4 –
Table 2.14 CM6 refers) |
|
|
Night-time
lighting |
No night-time
works were reported to have been carried out during the monitoring period |
|
|
Landscape and
wetland treatments generally |
Continuous belt of screen planting along the southern and western
boundaries of the site has been completed.
The formation, soiling and water control structures of the wetland
restoration area have been completed. (Appendix M Photo 3 –
Table 2.14 CM6 refers) The wetland areas
are being established, with the ponds are being seasonally filled with rain
water. Planting of areas around the
WRA cells is complete. No
construction was carried out at the wetland restoration area after 15
November 2010. (Appendix M Photo 2 –
Table 2.14 CM2 refers) |
|
|
Soiling, etc. |
The soiling for
the advance planting strip has been completed. The soil placement and grading for each of
the wetland restoration areas has been completed. |
|
|
Plant supply |
The plant material used in the Advance Planting Strip and in the WRA
are all commonly available species and came from commercial sources. Transplanted reeds (Phragmites
australis) at the wetland habitat came from the temporary holding
nursery onsite. |
|
|
Planting |
The total number of trees that will reach a minimum of 10m in the
advance planting strip meets the contract requirements. The tree species are all from the approved
list. This planting should achieve
the required screening effect within the required time period. (Appendix M Photo 3 –
Table 2.14 CM6 refers) Some of the trees that were identified as dead in previous month or
having defects (i.e. extensive bark damage, cavities, fungal growths, etc.)
still need to be replaced with new specimens. Some of the recently planted
trees are still in poor condition, but are showing small signs of graduate
improvement Seedling trees and
shrubs, have been established at the margins of the wetland cells. Some
additional fill-in planting has been undertaken. |
|
|
Establishment Works |
|
The ET had carried
out construction phase weekly site inspections on 8, 15, 22 and 29 July 2014.
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) |
|
No major observations during the reporting month
|
- |
- |
- |
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, 1.4 tonnes C&D material was generated on site
during the period. 2 kg of metals was generated and collected by registered
recycling collector. 3 kg of paper/cardboard packing and 2 kg of plastic were
generated on site and collected by registered recycling collector. No chemical
waste was generated and collected by licensed chemical waste collector. 12 kg of other types of wastes (e.g. general refuse) was generated on site
and disposed of at public landfill facility.
The Contractor is
advised to maintain on site waste sorting and recording system and maximize
reuse / recycling of C&D wastes.
The environmental
permits, licenses, and/or notifications on environmental protection for this
Project which were valid during the reporting period is summarised in Table 6.2.
Table 6.2: Status of Environmental Submissions, Licenses and Permits
|
Statutory Reference |
Description |
Permit/Reference
No. |
Status |
|
EIAO |
Environmental Permit |
EP-311/2008/D |
Valid |
|
APCO |
Notification of Construction Work under APCO |
316688 (27 Apr 2010) |
Valid |
|
WPCO |
Discharge License |
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 vehicles should be washed to remove any
dusty materials before leaving the construction sites;
·
The portion of road leading the construction
site that is within 30m of a designated vehicle entrance or exit should be kept
clear of dusty materials;
·
During
the dry season, sufficient water spraying should be provided at haul road to
reduce dust emission; and
·
Ensure
proper functioning of the wheel wash facility.
Noise
·
Plant known to emit noise strongly in one
direction should be orientated to direct noise away from the NSRs; and
·
The
construction activities should be better scheduled to reduce noise nuisance.
Water Quality
·
Effluent
should be discharged in accordance with the discharge licence conditions;
·
Soil
contaminated with chemicals/oils should be removed from site and the voids
should be created filled with suitable materials; and
·
Silt
and debris should be removed from the temporary drainage channel regularly.
Waste Management
·
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 was no breach of Action or Limit Levels for Air Quality and Noise monitoring in the reporting month.
During July 2014, a number of exceedances of DO were observed at MP3 and
one exceedance of SS was observed at MP4. No exceedance was observed at MP5 and
MP6.
A
summary is presented in Table 7.1 below.
Table 7.1: Summary of Exceedances in Water Quality
|
Monitoring Date |
pH |
Dissolved Oxygen
(mg/L) |
Turbidity (NT) |
Suspended Solids
(mg/L) |
|
MP3 |
|
|
|
|
|
02/07/2014 |
7.4 |
5.6 |
49.1 |
13.5 |
|
04/07/2014 |
7.4 |
6.6 |
25.4 |
22 |
|
07/07/2014 |
7.5 |
5.8 |
20.3 |
15.5 |
|
09/07/2014 |
7.5 |
7.3 |
20.1 |
15.5 |
|
11/07/2014 |
7.5 |
5.9 |
19.8 |
19 |
|
14/07/2014 |
7.5 |
5.8 |
13.1 |
11 |
|
16/07/2014 |
7.5 |
6.0 |
22.2 |
11 |
|
18/07/2014 |
7.5 |
6.3 |
28.9 |
56.5 |
|
21/07/2014 |
7.5 |
6.8 |
21.3 |
17.5 |
|
23/07/2014 |
7.5 |
6.4 |
14.9 |
17 |
|
25/07/2014 |
7.5 |
6.8 |
20.1 |
12.5 |
|
28/07/2014 |
7.5 |
7.1 |
21.2 |
18 |
|
30/07/2014 |
7.5 |
7.0 |
22.6 |
14.5 |
|
Action Level |
<5.5 or >7.5 |
<6.85 |
>64 |
>65 |
|
Limit Level |
<4.0 or >8.0 |
<6.65 |
>67 |
>66 |
|
|
|
|
|
|
|
MP4 |
|
|
|
|
|
02/07/2014 |
7.4 |
5.1 |
18.2 |
38 |
|
04/07/2014 |
7.4 |
6.4 |
33.3 |
24.5 |
|
07/07/2014 |
7.4 |
6.4 |
24.1 |
26.5 |
|
09/07/2014 |
7.4 |
6.4 |
23.3 |
17.5 |
|
11/07/2014 |
7.4 |
5.7 |
21.7 |
19.5 |
|
14/07/2014 |
7.4 |
6.2 |
33.2 |
26.5 |
|
16/07/2014 |
7.4 |
6.1 |
47.0 |
21 |
|
18/07/2014 |
7.4 |
6.2 |
45.8 |
62.5 |
|
21/07/2014 |
7.4 |
6.3 |
25.1 |
26.5 |
|
23/07/2014 |
7.4 |
6.0 |
18.9 |
18 |
|
25/07/2014 |
7.4 |
6.6 |
22.5 |
14.5 |
|
28/07/2014 |
7.4 |
6.6 |
32.2 |
35.5 |
|
30/07/2014 |
7.4 |
6.4 |
33.9 |
26.5 |
|
Action Level |
<5.5 or >7.5 |
<3.91 |
>60 |
>50 |
|
Limit Level |
<4.0 or >8.0 |
<3.82 |
>64 |
>53 |
|
|
|
|
|
|
|
|
|
|
|
|
|
MP5 |
|
|
|
|
|
02/07/2014 |
7.4 |
5.7 |
37.7 |
26.5 |
|
04/07/2014 |
7.4 |
7.3 |
28.8 |
25 |
|
07/07/2014 |
7.4 |
6.0 |
23.4 |
26 |
|
09/07/2014 |
7.4 |
6.7 |
25.5 |
17.5 |
|
11/07/2014 |
7.4 |
6.0 |
20.5 |
19 |
|
14/07/2014 |
7.4 |
6.4 |
28.4 |
25.5 |
|
16/07/2014 |
7.4 |
5.9 |
41.1 |
14.5 |
|
18/07/2014 |
7.4 |
6.8 |
42.6 |
60.5 |
|
21/07/2014 |
7.4 |
6.7 |
27.4 |
28.5 |
|
23/07/2014 |
7.4 |
6.2 |
24.5 |
30.5 |
|
25/07/2014 |
7.4 |
7.3 |
22.0 |
13.5 |
|
28/07/2014 |
7.4 |
6.3 |
29.3 |
27 |
|
30/07/2014 |
7.4 |
7.1 |
29.3 |
19.5 |
|
Action Level |
<5.5 or >7.5 |
<4.13 |
>81 |
>66 |
|
Limit Level |
<4.0 or >8.0 |
<3.87 |
>84 |
>69 |
|
|
|
|
|
|
|
MP6 |
|
|
|
|
|
02/07/2014 |
7.4 |
5.8 |
47.4 |
32 |
|
04/07/2014 |
7.4 |
6.1 |
29.1 |
25 |
|
07/07/2014 |
7.4 |
5.9 |
26.1 |
21 |
|
09/07/2014 |
7.4 |
6.5 |
26.1 |
20.5 |
|
11/07/2014 |
7.4 |
6.6 |
20.3 |
20 |
|
14/07/2014 |
7.4 |
6.3 |
28.9 |
24 |
|
16/07/2014 |
7.4 |
6.3 |
43.3 |
21 |
|
18/07/2014 |
7.4 |
6.0 |
35.8 |
63 |
|
21/07/2014 |
7.4 |
6.6 |
22.6 |
26.5 |
|
23/07/2014 |
7.4 |
5.9 |
25.1 |
25 |
|
25/07/2014 |
7.4 |
6.6 |
21.3 |
13 |
|
28/07/2014 |
7.4 |
5.8 |
29.9 |
32 |
|
30/07/2014 |
7.4 |
6.8 |
33.0 |
24 |
|
Action Level |
<5.5 or >7.5 |
<4.61 |
>94 |
>75 |
|
Limit Level |
<4.0 or >8.0 |
<4.52 |
>96 |
>75 |
Notes:
(1) Values Bold indicate Action Level exceedance.
(2) Values Underlined and Bold indicate
Limit Level exceedance.
No environmental complaint was received during the reporting month.
No notifications of summons or successful prosecution were received the reporting month.
Non-compliance
Investigations have been carried out to identify the causes of water
quality exceedance.
From investigation, construction activities during the period of
exceedance included mainly site formation and foundation work, as well as pond
drainage management in the Wetland Restoration Area (to lower the water level
and remove unwanted species in the pond). 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 and
installing a barrier at the discharge outlet to desilt and divert site runoff
to sedimentation tanks and wastewater treatment facilities (Aquased), which
will ensure all site runoff is treated to satisfactory quality before
discharging into the northern ditches. With external factors affecting the
adjacent environments, such as natural variations, pond fish culture activities
and rainfall, the exceedances were considered not due to Project construction
works.
Complaints,
Summons and Prosecutions
Not applicable for this reporting month.
Non-compliance
As non-compliances have been recorded, the Event and Action Plan has
been followed. Although it is considered that the exceedances were not related
to the Project, the Contractor was reminded to implement the water quality mitigation
measures in accordance with the recommendation stated in Section 5.6.1 – 5.6.4
of the EIA Report as far as practicable and regular spot check would be
conducted on the nearby discharge by Contractor and inform ET for
investigation.
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 and installing a barrier at the discharge outlet to desilt and
divert site runoff to sedimentation tanks and wastewater treatment facilities
(Aquased), which will ensure all site runoff is treated to satisfactory quality
before discharging into the northern ditches.
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 (July 2014) |
0 |
0 |
0 |
|
From 12 May 2010 to end of the reporting month (July
2014) |
8 |
0 |
0 |
The major site works to be
commissioned in the coming month include:
¡ Site formation
¡ Foundation work
¡ Pond drainage management (to
lower the water level and remove unwanted species in the pond)
Key
issues to be considered in the coming three months include:
¡ Generation of dust from activities on-site during
dry weather conditions;
¡ Noise impact from operating equipment and
machinery on-site;
¡ Generation and treatment of site surface
runoffs and wastewater from activities on-site and during wet weather
conditions;
¡ Sorting, recycling, storage and disposal of
general refuse and construction waste from activities on-site; and
¡ Management of chemicals and avoidance of oil
spillage on-site and to the drainage.
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 August 2014 is shown in the Table 8.1.
Table 8.1: Tentative Environmental Monitoring and Audit Schedule for August
2014
The EM&A programme as recommended in the EM&A manual has been undertaken in the reporting month since 12 May 2010.
Monitoring of Air Quality, Noise, Water Quality, Ecology and Landscape and Visual impacts due to the Project was under way. In particular, the 1-hr TSP, 24-hr TSP, noise level (as Leq) and water quality parameters (such as pH, DO, turbidity and SS) under monitoring have been checked against established Action and Limit levels.
There was no breach of Action or Limit levels for Air Quality (1-hr TSP
and 24-hr TSP) and Noise level (as Leq) in the reporting month.
During July 2014, a number of
exceedances of DO were observed at MP3 and one exceedance of SS was observed at
MP4. No exceedance was observed at MP5 and MP6.
With considerations
on the construction activities and environment, the following recommendations were
provided:
Air Quality
·
All vehicles should be washed to remove any
dusty materials before leaving the construction sites;
·
The portion of road leading the construction
site that is within 30m of a designated vehicle entrance or exit should be kept
clear of dusty materials;
·
During
the dry season, sufficient water spraying should be provided at haul road to
reduce dust emission; and
·
Ensure
proper functioning of the wheel wash facility.
Noise
·
Plant known to emit noise strongly in one
direction should be orientated to direct noise away from the NSRs; and
·
The
construction activities should be better scheduled to reduce noise nuisance.
Water Quality
·
Effluent
should be discharged in accordance with the discharge licence conditions;
·
Soil
contaminated with chemicals/oils should be removed from site and the voids
should be created filled with suitable materials; and
·
Silt
and debris should be removed from the temporary drainage channel regularly.
Waste Management
·
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.
|
Appendix A. Project
Organization Chart |
Contact
information:
|
Company |
Position |
Name |
Telephone |
|
Profit Point Enterprises Limited
(Project Proponent) |
Project Manager |
Mr. Kelvin LAU |
2908 8114 |
|
Heng Shung Construction Co. Ltd. |
Assistant Construction Manager |
Ms. Lynne HUNG |
2908 2391 |
|
(The Contractor) |
Site Agent |
Mr. MOK Wing Hong |
9866 7683 |
|
|
Environmental Officer |
Mr. Ricky WONG |
9866 7625 |
|
ENVIRON Hong Kong
Ltd. (Independent Environmental
Checker (IEC)) |
Independent Environmental
Checker |
Mr. David YEUNG |
3743 0788 |
|
Mott
MacDonald Hong Kong Ltd. (Environmental
Team (ET)) |
Environmental Team Leader |
Mr. Terence KONG |
2828 5919 |
|
Appendix B. Tentative Construction Programme |
|
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 |
|
July 2014 |
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
10 |
11 |
12 |
13 |
14 |
15 |
|
Mammals |
|
ü |
|
|
ü |
|
|
ü |
|
|
ü |
|
|
|
ü |
|
Birds |
|
ü |
|
|
ü |
|
|
ü |
|
|
ü |
|
|
|
ü |
|
Herpetofauna |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
ü |
|
Dragonflies & butterflies |
|
ü |
|
|
|
|
|
|
|
|
|
|
|
|
ü |
|
Water Quality |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Inspection Visits |
|
ü |
|
|
ü |
|
|
ü |
|
|
ü |
|
|
|
ü |
|
July 2014 |
16 |
17 |
18 |
19 |
20 |
21 |
22 |
23 |
24 |
25 |
26 |
27 |
28 |
29 |
30 |
31 |
|
Mammals |
|
|
ü |
|
|
|
ü |
|
|
ü |
|
|
|
ü |
|
|
|
Birds |
|
|
ü |
|
|
|
ü |
|
|
ü |
|
|
|
ü |
|
|
|
Herpetofauna |
|
|
|
|
|
|
|
|
|
|
|
|
|
ü |
|
|
|
Dragonflies & butterflies |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Water Quality |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
ü |
|
|
Inspection Visits |
|
|
ü |
|
|
|
ü |
|
|
ü |
|
|
|
ü |
|
|
Note: Light
grey cells indicate public holidays, Saturdays or Sundays. Black cells indicate survey item
not required
in the
reporting month
.
Table
I1. Summary of bird species of
conservation importance and/or wetland-dependence recorded in the Survey Area
(excluding the WRA)
|
Species
Name(5) |
Scientific
Name(5) |
Conservation
Status (2) |
July 2014 |
Records outside surveys |
|
|
Occurrence(3) |
Mean(4) |
||||
|
Little Grebe |
Tachybaptus ruficollis |
LC, (1) |
5 |
8.6
|
ü |
|
Great Egret |
Ardea alba |
PRC, (RC), (1) |
5 |
2.2
|
ü |
|
Little Egret |
Egretta garzetta |
PRC, (RC), (1) |
5 |
6.4
|
ü |
|
Chinese Pond Heron |
Ardeola bacchus |
PRC, (RC), (1) |
5 |
15.8
|
ü |
|
Black-crowned Night Heron |
Nycticorax nycticorax |
(LC), (1) |
2 |
0.4
|
|
|
Yellow Bittern |
Ixobrychus sinensis |
LC, (1) |
1 |
0.2
|
|
|
Black Kite |
Milvus migrans |
RC, (1) |
- |
- |
ü |
|
White-breasted Waterhen |
Amaurornis phoenicurus |
(1) |
5 |
1.4
|
ü |
|
Common Kingfisher |
Alcedo atthis |
(1) |
2 |
0.4
|
ü |
|
White-thorated Kingfisher |
Halcyon smyrnensis |
LC, (1) |
- |
- |
ü |
|
White Wagtail |
Motacilla alba |
(1) |
3 |
1.0
|
ü |
|
Red-billed Starling |
Spodiopsar sericeus |
(1) |
2 |
2.2
|
|
|
Collared Crow |
Corvus torquatus |
LC, (1) |
1 |
0.2
|
|
|
No. of Species Recorded |
13 |
||||
(1) Indicates wetland-dependant or
wetland-associated species.
(2) Conservation status follows that of Fellowes et al. (2002) and BirdLife International
listing (2011).
(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)
(5) Follows HK bird
list (dated 2013-8-24).
Table I2. Summary of bird species of conservation
importance and/or wetland-dependence recorded in the WRA
|
Species
Name(5) |
Scientific
Name(5) |
Conservation
Status (2) |
July 2014 |
Records outside surveys |
|
|
Occurrence (3) |
Mean(4) |
||||
|
Little
Grebe |
Tachybaptus
ruficollis |
LC, (1) |
5 |
3.2
|
ü |
|
Great Egret |
Ardea alba |
PRC, (RC), (1) |
- |
- |
ü |
|
Little Egret |
Egretta garzetta |
PRC, (RC), (1) |
4 |
1.8
|
ü |
|
Chinese
Pond Heron |
Ardeola
bacchus |
PRC, (RC), (1) |
5 |
1.4
|
ü |
|
Yellow
Bittern |
Ixobrychus
sinensis |
LC, (1) |
3 |
1.0
|
ü |
|
Black
Kite |
Milvus
migrans |
RC, (1) |
2 |
0.6
|
ü |
|
White-breasted
Waterhen |
Amaurornis
phoenicurus |
(1) |
4 |
1.4
|
ü |
|
Wood
Sandpiper |
Tringa
glareola |
(LC), (1) |
2 |
0.4
|
ü |
|
Common
Sandpiper |
Actitis
hypoleucos |
(1) |
- |
- |
ü |
|
Pied
Kingfisher |
Ceryle
rudis |
(LC), (1) |
- |
- |
ü |
|
White-thorated
Kingfisher |
Halcyon
smyrnensis |
LC, (1) |
- |
- |
ü |
|
Common
Kingfisher |
Alcedo
atthis |
(1) |
2 |
0.6
|
ü |
|
White
Wagtail |
Motacilla
alba |
(1) |
3 |
0.8
|
ü |
|
Collared Crow |
Corvus torquatus |
LC, (1) |
3 |
0.6
|
|
|
No. of Species Recorded |
14 |
||||
(1) Indicates wetland-dependant or
wetland-associated species.
(2) Conservation status follows
that of Fellowes et al. (2002) and
BirdLife International listing (2011).
(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.
(5) Follows HK bird
list (dated 2013-08-24).
Table J1. Summary of herpetofauna monitoring in the
Survey Area (excluding the WRA)
|
Species
Name |
Scientific Name |
Conservation Status(1) |
July 2014 |
Records
Outside Surveys |
|
|
Occurrence(2) |
Mean(3) |
|
|||
|
Amphibian |
No. of |
Species Recorded |
1 |
|
|
|
Gunther's Forg |
Hylarana guentheri |
- |
1 |
1.0 |
ü |
|
|
|
|
Occurrence(2) |
Mean(3) |
|
|
Reptile |
No. of |
Species Recorded |
0 |
|
|
|
(No
Records in July
2014) |
|
|
|
|
|
(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) |
July
2014 |
Records
Outside Surveys |
|
|
Occurrence(2) |
Mean(3) |
|
|||
|
Amphibian |
No. of |
Species
Recorded |
0 |
|
|
|
(No
Records in July 2014) |
|
|
|
|
|
|
|
|
|
Occurrence(2) |
Mean(3) |
|
|
Reptiles |
No. of |
Species
Recorded |
0 |
|
|
|
(No Records in July 2014) |
|
|
|
|
|
(1) Conservation status follows that of Fellowes et al. (2002), Chan et al. (2005) and Karsen et al. (1998).
(2) Indicates number of surveys recorded within the reporting period.
(3) Refers to the mean number of individuals recorded in the
reporting period in the WRA.
Table J3. Summary
of mammal monitoring in the Survey Area (excluding the WRA)
|
Species
Name |
Scientific Name |
Conservation Status(1) |
July 2014 |
|
|
|
|
|
Occurrence(2) |
Mean(3) |
|
Mammal |
No. of |
Species
Recorded |
0 |
|
|
(No Records in July 2014) |
|
|
|
|
(1) Conservation status follows that of Fellowes et al. (2002) and Shek (2006).
(2) Indicates number of surveys recorded within the reporting period.
(3) Refers to the mean number of individuals recorded in the reporting period (excluding the WRA).
Table J4. Summary of mammal monitoring in the WRA
|
Species
Name |
Scientific Name |
Conservation Status(1) |
July 2014 |
Records Outside Surveys |
|
|
|
|
|
Occurrence(2) |
Mean(3) |
|
|
Mammal |
No. of |
Species
Recorded |
1 |
|
|
|
Japanese
Pipistrelle |
Pipistrellus abramus |
LC |
- |
- |
ü |
(1) Conservation status follows that of Fellowes et al. (2002) and Shek (2006).
(2) Indicates number of surveys recorded within the reporting period.
(3) Refers to the mean number of individuals recorded in the
reporting period in the WRA.
Table J5. Summary of dragonflies (odonata) and
butterfly monitoring in the Survey Area (excluding WRA)
|
Common
Name |
Scientific
Name |
Conservation Status(1) |
July 2014 |
|
|
Occurrence(2) |
Mean(3) |
|||
|
Odonata |
No. of Species Recorded |
5 |
||
|
Common Flangetail |
Ictinogomphus pertinax |
- |
3 |
3.0 |
|
Green Skimmer |
Orthetrum sabina sabina |
- |
3 |
4.0 |
|
Wandering Glider |
Pantala flavescens |
- |
1 |
0.3 |
|
Variegated Flutterer |
Rhyothemis variegata arria |
- |
3 |
5.3 |
|
Saddlebag Glider |
Tramea virginia |
- |
3 |
2.0 |
|
Butterfly |
No. of Species Recorded |
1 |
||
|
Common Grass Yellow |
Eurema hecabe hecabe |
- |
1 |
0.5 |
(1) Conservation status follows that of Fellowes et al. (2002), Lo & Hui (2004), Tam et al. (2011) and Young & Yiu (2002).
(2) Indicates number of surveys recorded within the reporting period.
(3) Refers to the mean number of individuals recorded in the survey (excluding the WRA).
Table J6. Summary of dragonfly (odonata) and butterfly monitoring in the
WRA
|
Common Name |
Scientific
Name |
Conservation Status(1) |
July 2014 |
|
|
Occurrence(2) |
Mean(3) |
|||
|
Odonata |
No. of
Species Recorded |
9 |
||
|
Common Bluetail |
Ischnura senegalensis |
- |
1 |
0.7 |
|
Common Flangetail |
Ictinogomphus pertinax |
- |
3 |
5.3 |
|
Blue Dasher |
Brachydiplax chalybea flavovittata |
- |
3 |
1.3 |
|
Crimson Darter |
Crocothemis servilia servilia |
- |
2 |
1.0 |
|
Pied Percher |
Neurothemis tullia tullia |
- |
3 |
1.0 |
|
Green Skimmer |
Orthetrum sabina sabina |
- |
3 |
6.0 |
|
Wandering Glider |
Pantala flavescens |
- |
1 |
0.3 |
|
Variegated Flutterer |
Rhyothemis variegata arria |
- |
3 |
8.0 |
|
Saddlebag Glider |
Tramea virginia |
- |
3 |
4.0 |
|
Butterfly |
No. of
Species Recorded |
8 |
||
|
Mottled Emigrant |
Catopsilia pyranthe pyranthe |
- |
1 |
0.3 |
|
Lemon Emigrant |
Catopsilia pomona pomona |
- |
1 |
0.3 |
|
Common Grass Yellow |
Eurema hecabe hecabe |
- |
3 |
3.3 |
|
Common Palmfly |
Elymnias hypermnestra hainana |
- |
1 |
0.3 |
|
Tawny Rajah |
Charaxes bernardus bernardus |
- |
1 |
0.3 |
|
Great Egg-fly |
Hypolimnas bolina kezia |
- |
1 |
0.3 |
|
Red Ring Skirt |
Hestina assimilis assimilis |
- |
2 |
0.7 |
|
Common Mormon |
Papilio polytes polytes |
- |
1 |
0.7 |
(1) Conservation status follows that of Fellowes et al. (2002), Lo & Hui (2004), Tam et al. (2011) and Young & Yiu (2002).
(2) Indicates number of surveys recorded within the reporting period.
(3) Refers to the mean number of individuals recorded in the reporting period in the WRA.
Table K1. Water quality at WRA in July 2014
|
Cell No. |
Temp.
(°C) |
pH |
Salinity
(ppt) |
Turb
(mg/L) |
DO (mg/L) |
Water
Level (cm) |
|
1 |
27.7 |
8.02 |
0.51 |
7.9 |
5.8 |
180 |
|
2 |
27.6 |
7.97 |
0.47 |
8.3 |
6.1 |
160 |
|
3 |
27.8 |
7.95 |
0.38 |
9.0 |
6.2 |
180 |
|
4 |
27.7 |
8.02 |
0.39 |
8.7 |
6.3 |
180 |
Note: Values highlighted in bold indicate that
action level is reached; whereas values in bold and underline indicate that
limit level is reached.
Air
Quality – Recommended Mitigation Measures
|
Air Quality
Mitigation Measures during construction |
Implementation
Status |
|
·
access roads
should be sprayed with water or dust suppression chemical to maintain the
entire road surface wet or paved; |
ü |
|
·
every stock of
more than 20 bags of cement or dry PFA should be covered entirely by
impervious sheeting or placed in an area sheltered on the top and the 3
sides; |
N/A |
|
·
de-bagging,
batching or mixing process should be carried out in sheltered areas during
the use of bagged cement; |
N/A |
|
·
use of
effective dust screens, sheeting or netting to be provided to enclose dry
scaffolding which may be provided from the ground floor level of the building
or if a canopy is provided at the first floor level, from the first floor
level, up to the highest level (maximum four floors for this Project) of the
scaffolding where scaffolding is erected around the perimeter of a building
under construction; |
N/A |
|
·
dump trucks for
material transport should be totally enclosed using impervious sheeting; |
ü |
|
·
any excavated
dusty materials or stockpile of dusty materials should be covered entirely by
impervious sheeting or sprayed with water so as to maintain the entire
surface wet, and recovered or backfilled or reinstated within 24 hours of the
excavation or unloading; |
ü |
|
·
dusty materials
remaining after a stockpile is removed should be wetted with water; |
ü |
|
·
the area where
vehicle washing takes place and the section of the road between the washing
facilities and the exit point should be paved with e.g. concrete, bituminous
materials or hardcore or similar; |
ü |
|
·
the portion of
road leading only to a construction site that is within 30m of a designated
vehicle entrance or exit should be kept clear of dusty materials; |
ü |
|
·
stockpile of
dusty materials to be either covered entirely by impervious sheeting, placed
in an area sheltered on the top and the 3 sides; or sprayed with water so as
to maintain the entire surface wet; |
ü |
|
·
all dusty
materials to be sprayed with water prior to any loading, unloading or
transfer operation so as to maintain the dusty material wet; |
ü |
|
·
vehicle speed
to be limited to 10 kph except on completed access roads; |
ü |
|
·
every vehicle
should be washed to remove any dusty materials from its body and wheels
before leaving the construction sites; |
ü |
|
·
the load of
dusty materials carried by vehicle leaving a construction site should be
covered entirely by clean impervious sheeting to ensure that the dusty
materials do not leak from the vehicle; |
ü |
|
·
the working
area of excavation should be sprayed with water immediately before, during
and immediately after (as necessary) the operations so as to maintain the
entire surface wet; |
ü |
|
Odour mitigation
measures |
|
|
·
all malodorous
excavated material should be placed as far as possible from any ASRs; |
N/A |
|
·
the stockpiled
malodorous material should be removed from site as soon as possible; and |
N/A |
|
·
the stockpiled
malodorous material should be covered entirely by plastic tarpaulin sheets. |
N/A |
Noise –
Recommended Mitigation Measures
|
Noise Mitigation Measures during construction |
Implementation
Status |
|
·
only
well-maintained plant should be operated on-site and plant should be serviced
regularly during the construction works; |
ü |
|
·
machines and
plant that may be in intermittent use should be shut down between work
periods or should be throttled down to a minimum; |
ü |
|
·
plant known to
emit noise strongly in one direction should, where possible, be orientated to
direct noise away from the NSRs; |
ü |
|
·
silencers or
mufflers on construction equipment should be utilised and should be properly
maintained during the construction period; |
N/A |
|
·
mobile plant
should be sited as far away from NSRs as possible; |
ü |
|
·
material
stockpiles and other structures should be effectively utilised, where
practicable, to screen noise from on-site construction activities; |
N/A |
|
·
air compressor
and hand-held breaker should be fitted with valid noise emission labels
during operation; and |
ü |
|
·
The Contractor
shall at all times comply with all current statutory environmental
legislation. |
ü |
|
Selection of quieter
plant and working methods The Contractor shall obtain particular models of plant that are
quieter than standards given in GW-TM.
The list of assumed quieter plants can be found in the Table 4–14 of the EIA report. The
Contractor shall select from the available models achieving the assumed sound
levels while making reference to the GW-TM and BS5228: Part 1: 1997 |
ü |
|
Use of Noise Barriers Noise barriers are proposed along the site boundary to block the
direct line of sight from the most affected NSRs to the major noise
contribution construction phases. The height of the noise barriers ranged
from 9-10m. The noise barriers shall
be built before the commencement of construction works in order to ensure
protection to nearby NSRs. The noise
barrier should have a surface density of at least 10kg/m2 or
material providing equivalent transmission loss. The noise barriers and hoardings should
have no gaps and openings to avoid noise leakage. |
ü |
Water
Quality – Recommended Mitigation Measures
|
Water Quality Mitigation Measures during
construction |
Implementation
Status |
|
·
The site should be confined to avoid silt
runoff to the site. |
ü |
|
·
No discharge of silty water into the storm
drain and drainage channel within and the vicinity of the site. |
ü |
|
·
Any soil contaminated with chemicals/oils
shall be removed from site and the void created shall be filled with suitable
materials. |
ü |
|
·
Stockpiles to be covered by tarpaulin to avoid
spreading of materials during rainstorms; |
ü |
|
·
Suitable containers shall be used to hold the
chemical wastes to avoid leakage or spillage during storage, handling and
transport; |
ü |
|
·
Chemical waste containers shall be labelled
with appropriate warning signs in English and Chinese to avoid
accidents. there shall also be clear
instructions showing what action to take in the event of an accidental; |
ü |
|
·
Storage areas shall be selected at safe
locations on site and adequate space shall be allocated to the storage area; |
ü |
|
·
Any construction plant which causes pollution
to the water system due to leakage of oil or fuel shall be removed off-site
immediately; |
N/A |
|
·
Spillage or leakage of chemical waste to be
controlled by using suitable absorbent materials; |
ü |
|
·
Chemicals will always be stored on drip trays
or in bunded areas where the volume is 110% of the stored volume; |
ü |
|
·
Regular clearance of domestic waste generated
in the temporary sanitary facilities to avoid waste water spillage. |
ü |
|
·
Temporary sanitary facilities to be provided
for on-site workers during construction.
|
ü |
|
·
Temporary drainage channel and associated facilities will be provided
to collect the surface runoff generated within the Project Area during the
construction phase. |
ü |
|
·
Sandbags or silt traps will need to be placed to avoid silt runoff to
the drainage channel draining the water in the northern ditch. Draining of the ditches should avoid rainy
weather. |
ü |
|
·
Excavated soil
which needs to be temporarily stockpiled should be stored in a specially
designated area and provided with a tarpaulin cover to avoid runoff into the
drainage channels. |
ü |
Waste
Management – Recommended Mitigation Measures
|
Waste Management
Mitigation Measures during construction |
Implementation
Status |
|
Site Clearance Waste ·
The major
construction works of Wo Shang Wai is in the development of residential
buildings and other associated facilities (club house, tennis courts, etc).
The amount of site clearance works will be limited with the exception of the
excavated materials. The thin layer of vegetation removed can be stored and
reused for landscaping. |
ü |
|
Excavated Materials The intention is to maximize the reuse of the excavated materials
on-site as fill materials. |
ü |
|
Imported Filling Material The excavated/imported filling material may
have to be temporarily stockpiled on-site for the construction of road
embankment and foundation of viaduct substructure. Control measures should be taken at the
stockpiling area to prevent the generation of dust and pollution of
stormwater channels. However, to
eliminate the risk of blocking drains in the wet season, it is recommended
that stockpiling of excavated materials at during wet season should be
avoided as far as practicable. |
ü |
|
Construction and Demolition Materials Careful design, planning and good site management can minimise
over-ordering and generation of waste materials such as concrete, mortars and
cement grouts. The design of formwork
should maximise the use of standard wooden panels so that high reuse levels
can be achieved. Alternatives such as
steel formwork of plastic facing should be considered to increase the
potential for reuse. |
ü |
|
The Contractor should reuse any C&D material on-site. C&D
waste should be segregated and stored in different containers to other wastes
to encourage the re-use or recycling of materials and their proper disposal. |
ü |
|
Chemical
Waste For those processes
which generate chemical waste, it may be possible to find alternatives which
generate reduced quantities or even no chemical waste, or less dangerous
types of chemical waste. |
N/A |
|
Containers used for
the storage of chemical wastes should: |
|
|
·
be suitable for
the substance they are holding, resistant to corrosion, maintained in a good
condition, and securely closed: |
ü |
|
·
have a capacity
of less than 450 litres unless the specification have been approved by the
EPD; and |
ü |
|
·
display a label
in English and Chinese in accordance with instructions prescribed in Schedule
2 of the Regulations, |
ü |
|
The storage area for
chemical wastes should: |
|
|
·
be clearly
labelled and used solely for the storage of chemical waste; |
ü |
|
·
be enclosed on
at least 3 sides; |
ü |
|
·
have an
impermeable floor and bunding, of capacity to accommodate 110% of the volume
of the largest container or 20% by volume of the chemical waste stored in
that area whichever is the greatest; |
ü |
|
·
have adequate
ventilation; |
ü |
|
·
be covered to
prevent rainfall entering (water collected within the bund must be tested and
disposed as chemical waste if necessary); and |
ü |
|
·
be arranged so
that incompatible materials are adequately separated. |
ü |
|
Disposal of chemical
waste should: |
|
|
·
be via a
licensed waste collector; and |
N/A |
|
·
be to a
facility licensed to receive chemical waste, such as the Chemical Waste
Treatment Facility which also offers a chemical waste collection service and
can supply the necessary storage containers, or |
N/A |
|
·
to be reuser of
the waste, under approval from the EPD. |
N/A |
|
General Refuse Should be stored in enclosed bins or compaction units separate from
C&D and chemical wastes. The
Contractor should employ a reputable waste collector to remove general refuse
from the site, separate from C&D and chemical wastes, on a regular basis
to minimise odour, pest and litter impacts.
Burning of refuse on construction sites is prohibited by law. |
ü |
|
Disposal
of Excavated Sediment at Sea |
|
|
The requirements and procedures for excavated sediment disposal are
specified under the ETWB TCW No. 34/2002 and PNAP 252. The management of the excavation, use and
disposal of sediment is monitored by Fill Management Committee, whilst the
licensing of marine dumping is the responsibility of the Director of
Environmental Protection (DEP). |
N/A |
|
The excavated sediment would be loaded onto barges or other
appropriate vessel and transported to the designated marine disposal
site. Category L sediment and Category
M sediment passing the biological test would be suitable for disposal at a
gazetted open sea disposal ground.
Category M sediment failing the biological test and Category H
sediment passing the biological test would require confined marine disposal. |
N/A |
|
During transportation and disposal of the dredged sediment, the
following measures should be taken to minimize potential impacts on water
quality: - |
N/A |
|
·
Bottom opening transport vessels should be
fitted with tight fitting seals to prevent leakage of material. Excess
material should be cleaned from the decks and exposed fittings of vessels
before the vessel is moved. |
N/A |
|
·
Monitoring of the barge loading should be
conducted to ensure that loss of material does not take place during
transportation. Transport barges or vessels should be equipped with automatic
self-monitoring devices as specified by the DEP. |
N/A |
Ecology –
Recommended Mitigation Measures
|
Ecology Mitigation Measures during construction |
Implementation
Status |
|
Clear Definition of
Site Limit |
|
|
Clear
definition of the site limit should be provided in order to minimize and
confine the disturbance during the construction period, especially the
northern limit of the Site which is adjacent to fishponds within the
Conservation Area (CA) zone and are considered to be ecological sensitive
receivers. During wetland construction stage the WRA
boundary will be delineated using a temporary hoarding in order to reduce
disturbance to off-site habitats and wildlife. During the establishment phase this
hoarding will be replaced with a 1 m high chain-link fence in order to reduce
disturbance to the WRA through access by humans and dogs, and a hoarding will
be established around the residential construction site. |
ü N/A |
|
Dust and Noise
Suppression and Avoidance of Water Pollution |
|
|
Good site
practices of dust and noise suppression should be strictly implemented to
ensure that disturbance is minimized to acceptable levels. Mitigation measures
for the off-site disturbance impacts on the fishponds in the CA include
hoarding at the northern site boundary during construction of the WRA to
reduce noise and dust impacts to the adjacent habitats. Through the use of
quieter plant and temporary/movable noise barriers, the noise level would be
reduced significantly to an acceptable level. Hoarding at the northern
boundary should be replaced with a 1 m high chain-link fence following
construction and the WRA will then act as a buffer between the existing
wetland areas and the residential part of the site until construction is
completed. Hoarding will be retained
between the WRA and ongoing construction work to avoid visual disturbance and
reduce noise and dust emissions.
Pollution of watercourses and sedimentary runoff will be minimized by
good site practice, especially the containment of water and sediment within
the site for removal. These standard noise and air and water quality site practices are
considered to be effective measures for minimizing the disturbance impact
during the construction period. |
ü |
|
Planning of
Construction Schedule |
|
|
The construction of the proposed project should be scheduled in
phases. Because mitigation is preferably carried out in advance of the main
works rather than after the completion of works, the construction of the WRA
will commence at the start of the project.
Construction work within the WRA is scheduled to take place in a
single wet season, followed by 1.5 years of wetland establishment. During the
wetland establishment period no noisy work will be undertaken within the WRA
to minimize the disturbance to off-site habitats and wildlife. |
N/A |
|
Reusing Onsite
Materials |
|
|
Soil and plants on-site should
be reused (e.g. used as fill material) as far as practical. Stock piles of
these reusable materials should be stored in an appropriate area on-site. In
particular, the re-use of the wetland soils and topsoil should be considered. |
ü |
|
Construction of the
Wetland Restoration Area The WRA will be
operational within 2.5 yrs from the commencement of construction (1 year for
site formation and 1.5 years for establishment) and will compensate for the
predicted ecological impacts of the proposed development. |
ü |
Landscape
and Visual – Recommended Mitigation Measures
|
Landscape and Visual Mitigation Measures during
construction |
Implementation
Status |
|
CM1 - The construction area and contractor’s temporary works areas
should be minimised to avoid impacts on adjacent landscape. |
ü |
|
CM2 - Screening of construction works by hoarding / noise barriers. |
ü (Appendix M Photo 1
& 2*) |
|
CM3 - Reduction of construction period to practical minimum. |
ü |
|
CM4 - Topsoil, where identified, should be stripped and stored for
re-use in the construction of the soft landscape works, where the soil
material meets acceptable criteria and where practical. The Contract Specification shall include
storage and reuse of topsoil as appropriate. |
ü |
|
CM5 - Hydroseeding or sheeting of soil stockpiles with visually
unobtrusive material (in earth tone). |
ü |
|
CM6 – Advance screen planting of noise barriers |
ü (Appendix M Photo 3
& 4*) |
|
CM7 - Control night-time lighting and glare by hooding all lights. |
N/A |
|
CM8 - Ensure no run-off into streams adjacent to the Project Area. |
ü |
|
CM9 - Protection of existing trees on boundary of site shall be
carefully protected during construction.
Detailed Tree Protection Specification shall be provided in the
Contract Specification. Under this specification, the Contractor shall be
required to submit, for approval, a detailed working method statement for the
protection of trees prior to undertaking any works adjacent to all retained
trees, including trees in contractor’s works areas. (Tree protection measures will be detailed
at S16 and Tree Removal Application stage). |
ü |
|
CM10 - Trees unavoidably affected by the works shall be transplanted
where practical. Trees should be
transplanted straight to their destinations and not held in a nursery. A detailed Tree Transplanting Specification
shall be provided in the Contract Specification, if applicable. Sufficient
time for necessary tree root and crown preparation periods shall be allowed
in the project programme. |
ü |
Legend:
ü Implemented
× Not
implemented
P Partially implemented
N/A Not applicable
* Photos
are in Appendix M
|
Appendix
M. Landscape and Visual Audit Photos |
|
|
|
|
Photo 1: The Construction works have been screened by hoarding (CM2) |
Photo 2: The wetland areas are being established, with the ponds are being seasonally filled with rain water. (CM2) |
|
|
|
|
Photo 3: Continuous belt of screen planting along the southern and western boundaries of the site has been completed. (CM6) |
Photo 4: Advance screen planting of noise barrier has been undertaken (CM6) |