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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 Feb
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 K Summary of Monitoring of Water
Quality associated with Ecological Monitoring Conducted
Appendix L Environmental Mitigation Measures - Implementation Status
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 44th
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 January 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 January 2014, no exceedance of water,
air and noise was observed at all measurement locations.
The summary of measured water quality is
presented in Section 3.2.3.
Implementation of Mitigation Measures
Site
audits were carried out on 7, 14, 21 and 28 January 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
In
January 2014, a formal complaint was made to the Environmental Protection
Department (EPD) on dust impact at Palm Springs, Yuen Long. The complaint
concerned suspected dust emissions from the Wo Shang Wai construction site. The
ET received the formal complaint on 24 January 2014 via email from EPD. ET
conducted an investigation into the complaint and the findings will be reported
in the next Monthly EM&A Report (February 2014).
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, superstructure 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 January 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 January 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 |
10D101566 & 09K100735 |
|
Turbidity
Meter |
Hach
2100Q |
11050C001264 |
|
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:
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 7, 14, 21 and 28 January 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 |
||||||||
|
02-Jan-14 |
14:36 |
229 |
241 |
257 |
89-264 |
378 |
500 |
|
|
08-Jan-14 |
14:08 |
213 |
230 |
226 |
||||
|
14-Jan-14 |
13:32 |
151 |
148 |
156 |
||||
|
20-Jan-14 |
13:21 |
259 |
261 |
264 |
||||
|
24-Jan-14 |
13:36 |
149 |
144 |
160 |
||||
|
30-Jan-14 |
13:20 |
95 |
101 |
89 |
||||
|
ASR2A |
||||||||
|
02-Jan-14 |
12:47 |
236 |
251 |
227 |
96-251 |
357 |
500 |
|
|
08-Jan-14 |
13:10 |
204 |
223 |
228 |
||||
|
14-Jan-14 |
12:53 |
155 |
159 |
164 |
||||
|
20-Jan-14 |
12:50 |
231 |
246 |
241 |
||||
|
24-Jan-14 |
12:50 |
139 |
144 |
151 |
||||
|
30-Jan-14 |
12:49 |
96 |
102 |
99 |
||||
|
ASR3 |
||||||||
|
02-Jan-14 |
12:34 |
251 |
246 |
255 |
102-255 |
358 |
500 |
|
|
08-Jan-14 |
12:36 |
206 |
211 |
230 |
||||
|
14-Jan-14 |
12:38 |
162 |
144 |
148 |
||||
|
20-Jan-14 |
12:37 |
247 |
255 |
250 |
||||
|
24-Jan-14 |
12:36 |
152 |
148 |
140 |
||||
|
30-Jan-14 |
12:36 |
112 |
102 |
111 |
||||
|
ASR4 |
||||||||
|
02-Jan-14 |
13:22 |
271 |
262 |
276 |
100-280 |
372 |
500 |
|
|
08-Jan-14 |
13:59 |
256 |
240 |
261 |
||||
|
14-Jan-14 |
13:20 |
192 |
183 |
188 |
||||
|
20-Jan-14 |
13:11 |
267 |
280 |
277 |
||||
|
24-Jan-14 |
13:10 |
160 |
174 |
168 |
||||
|
30-Jan-14 |
13:14 |
100 |
112 |
116 |
||||
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 |
|
|
|
|
|
02-Jan-14 |
89 |
83-112 |
226 |
260 |
|
08-Jan-14 |
88 |
|||
|
14-Jan-14 |
112 |
|||
|
20-Jan-14 |
98 |
|||
|
24-Jan-14 |
93 |
|||
|
30-Jan-14 |
83 |
|||
|
ASR2A |
|
|
|
|
|
02-Jan-14 |
95 |
67-106 |
213 |
260 |
|
08-Jan-14 |
88 |
|||
|
14-Jan-14 |
106 |
|||
|
20-Jan-14 |
98 |
|||
|
24-Jan-14 |
83 |
|||
|
30-Jan-14 |
67 |
|||
|
ASR3 |
|
|
|
|
|
02-Jan-14 |
107 |
83-115 |
205 |
260 |
|
08-Jan-14 |
94 |
|||
|
14-Jan-14 |
115 |
|||
|
20-Jan-14 |
106 |
|||
|
24-Jan-14 |
105 |
|||
|
30-Jan-14 |
83 |
|||
|
ASR4 |
|
|
|
|
|
02-Jan-14 |
96 |
79-105 |
237 |
260 |
|
08-Jan-14 |
82 |
|||
|
14-Jan-14 |
101 |
|||
|
20-Jan-14 |
105 |
|||
|
24-Jan-14 |
91 |
|||
|
30-Jan-14 |
79 |
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 |
|
02-Jan-14 |
15:56 |
52 |
56 |
46 |
|
|
08-Jan-14 |
17:12 |
60 |
62 |
56 |
|
|
14-Jan-14 |
15:57 |
50 |
53 |
48 |
|
|
20-Jan-14 |
15:16 |
58 |
60 |
43 |
|
|
30-Jan-14 |
15:42 |
51 |
53 |
48 |
|
|
NSR3 |
|
|
|
|
|
|
02-Jan-14 |
15:13 |
57 |
60 |
48 |
|
|
08-Jan-14 |
16:29 |
56 |
59 |
48 |
|
|
14-Jan-14 |
15:17 |
59 |
60 |
56 |
|
|
20-Jan-14 |
15:59 |
50 |
52 |
47 |
|
|
30-Jan-14 |
15:02 |
57 |
57 |
46 |
|
|
NSR5 |
|
|
|
|
|
|
02-Jan-14 |
13:39 |
62 |
64 |
58 |
|
|
08-Jan-14 |
14:49 |
57 |
60 |
54 |
|
|
14-Jan-14 |
13:37 |
57 |
60 |
55 |
|
|
20-Jan-14 |
13:24 |
57 |
60 |
56 |
|
|
30-Jan-14 |
13:24 |
56 |
58 |
53 |
|
|
NSR7 |
|
|
|
|
|
|
02-Jan-14 |
14:26 |
67 |
70 |
63 |
|
|
08-Jan-14 |
15:49 |
67 |
70 |
64 |
|
|
14-Jan-14 |
14:26 |
67 |
72 |
58 |
|
|
20-Jan-14 |
14:16 |
66 |
68 |
58 |
|
|
30-Jan-14 |
14:15 |
63 |
66 |
57 |
|
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 |
|
|
|
|
|
|
|
|
02/01/2014 |
16.3 |
7.4 |
8.4 |
85.9 |
22.2 |
4 |
9 |
|
04/01/2014 |
16.7 |
7.4 |
9.5 |
97.4 |
22.5 |
4.5 |
20 |
|
06/01/2014 |
17.2 |
7.4 |
8.8 |
91.8 |
27.2 |
20 |
6.5 |
|
08/01/2014 |
20.1 |
7.4 |
8.9 |
97.6 |
20.4 |
10.5 |
4 |
|
10/01/2014 |
16.8 |
7.4 |
8.4 |
87.0 |
36.1 |
25.5 |
5 |
|
13/01/2014 |
14.5 |
7.5 |
7.4 |
72.6 |
28.1 |
14.5 |
7 |
|
15/01/2014 |
20.1 |
7.4 |
8.3 |
91.2 |
23.0 |
22.5 |
13.5 |
|
17/01/2014 |
15.2 |
7.4 |
9.3 |
93.2 |
12.0 |
5 |
10.5 |
|
20/01/2014 |
19.8 |
7.5 |
8.3 |
90.9 |
14.9 |
8 |
5 |
|
22/01/2014 |
17.8 |
7.5 |
8.5 |
89.6 |
14.9 |
6 |
10.5 |
|
24/01/2014 |
20.3 |
7.4 |
8.2 |
90.5 |
19.1 |
4 |
18.5 |
|
27/01/2014 |
21.8 |
7.5 |
8.1 |
92.7 |
15.8 |
3 |
10 |
|
29/01/2014 |
22.1 |
7.4 |
8.3 |
94.9 |
9.1 |
4 |
8.5 |
|
30/01/2014 |
22.9 |
7.4 |
7.6 |
88.3 |
9.6 |
3 |
10.5 |
|
Action Level |
- |
<5.5 or
>7.5 |
<6.85 |
- |
>64 |
- |
>65 |
|
Limit Level |
- |
<4.0 or
>8.0 |
<6.65 |
- |
>67 |
- |
>66 |
|
|
|
|
|
|
|
|
|
|
MP4 |
|
|
|
|
|
|
|
|
02/01/2014 |
17.4 |
7.4 |
8.7 |
92.9 |
20.6 |
2.5 |
13 |
|
04/01/2014 |
17.1 |
7.4 |
9.1 |
95.2 |
16.7 |
3 |
31 |
|
06/01/2014 |
18.6 |
7.4 |
8.3 |
90.2 |
25.0 |
17 |
2 |
|
08/01/2014 |
19.8 |
7.4 |
8.5 |
93.6 |
22.1 |
17.5 |
4.5 |
|
10/01/2014 |
17.0 |
7.4 |
8.4 |
87.5 |
51.5 |
43 |
6.5 |
|
13/01/2014 |
14.3 |
7.4 |
6.9 |
67.3 |
49.6 |
37.5 |
6.5 |
|
15/01/2014 |
19.6 |
7.4 |
8.7 |
94.1 |
31.5 |
26.5 |
7.5 |
|
17/01/2014 |
15.4 |
7.4 |
9.0 |
91.2 |
18.9 |
12 |
5 |
|
20/01/2014 |
20.3 |
7.4 |
8.2 |
90.4 |
30.5 |
29 |
4 |
|
22/01/2014 |
18.1 |
7.4 |
8.7 |
92.2 |
19.7 |
2 |
12 |
|
24/01/2014 |
20.8 |
7.4 |
7.8 |
87.6 |
23.0 |
2 |
21 |
|
27/01/2014 |
21.6 |
7.4 |
8.3 |
94.5 |
41.4 |
7 |
35.5 |
|
29/01/2014 |
22.9 |
7.4 |
7.5 |
87.4 |
6.4 |
2 |
5.5 |
|
30/01/2014 |
23.1 |
7.4 |
7.2 |
84.9 |
8.1 |
3 |
5.5 |
|
Action Level |
- |
<5.5 or
>7.5 |
<3.91 |
- |
>60 |
- |
>50 |
|
Limit Level |
- |
<4.0 or
>8.0 |
<3.82 |
- |
>64 |
- |
>53 |
|
|
|
|
|
|
|
|
|
|
MP5 |
|
|
|
|
|
|
|
|
02/01/2014 |
17.6 |
7.4 |
8.3 |
88.4 |
21.5 |
2.5 |
15.5 |
|
04/01/2014 |
17.3 |
7.4 |
8.5 |
88.7 |
12.4 |
2.5 |
17 |
|
06/01/2014 |
18.8 |
7.4 |
8.4 |
92.0 |
26.5 |
15 |
2 |
|
08/01/2014 |
20.5 |
7.4 |
8.2 |
91.9 |
25.3 |
16 |
4 |
|
10/01/2014 |
17.3 |
7.4 |
8.8 |
92.5 |
48.5 |
35.5 |
5.5 |
|
13/01/2014 |
14.6 |
7.4 |
6.7 |
66.4 |
46.5 |
26 |
6 |
|
15/01/2014 |
20.2 |
7.4 |
8.7 |
96.6 |
28.3 |
24 |
7 |
|
17/01/2014 |
15.8 |
7.4 |
9.6 |
97.6 |
16.2 |
10 |
4 |
|
20/01/2014 |
20.6 |
7.4 |
8.7 |
97.4 |
31.9 |
29 |
4.5 |
|
22/01/2014 |
18.3 |
7.4 |
8.5 |
90.7 |
19.1 |
2 |
15 |
|
24/01/2014 |
20.9 |
7.4 |
8.3 |
93.0 |
22.2 |
3 |
19.5 |
|
27/01/2014 |
22.1 |
7.4 |
7.6 |
88.1 |
40.3 |
7 |
33 |
|
29/01/2014 |
22.8 |
7.4 |
8.0 |
92.6 |
6.4 |
2 |
5 |
|
30/01/2014 |
23.5 |
7.4 |
7.7 |
90.9 |
9.9 |
2 |
5.5 |
|
Action Level |
- |
<5.5 or
>7.5 |
<4.13 |
- |
>81 |
- |
>66 |
|
Limit Level |
- |
<4.0 or
>8.0 |
<3.87 |
- |
>84 |
- |
>69 |
|
|
|
|
|
|
|
|
|
|
MP6 |
|
|
|
|
|
|
|
|
02/01/2014 |
17.5 |
7.4 |
8.5 |
90.2 |
27.2 |
2 |
16 |
|
04/01/2014 |
17.3 |
7.4 |
8.8 |
91.9 |
13.5 |
3 |
28.5 |
|
06/01/2014 |
18.9 |
7.4 |
8.4 |
91.0 |
28.0 |
16.5 |
2 |
|
08/01/2014 |
20.6 |
7.4 |
7.8 |
87.7 |
21.9 |
17 |
4 |
|
10/01/2014 |
17.1 |
7.4 |
8.1 |
85.0 |
51.4 |
27 |
5.5 |
|
13/01/2014 |
14.1 |
7.4 |
6.1 |
59.5 |
46.7 |
26.5 |
6 |
|
15/01/2014 |
20.4 |
7.4 |
8.4 |
93.4 |
29.9 |
24 |
6.5 |
|
17/01/2014 |
15.8 |
7.4 |
8.8 |
90.1 |
18.1 |
12 |
4.5 |
|
20/01/2014 |
20.7 |
7.4 |
7.4 |
82.7 |
31.2 |
29 |
4 |
|
22/01/2014 |
18.5 |
7.4 |
7.9 |
84.6 |
19.0 |
2 |
15 |
|
24/01/2014 |
20.9 |
7.4 |
8.2 |
91.7 |
24.1 |
2 |
21 |
|
27/01/2014 |
22.1 |
7.4 |
7.6 |
87.7 |
40.7 |
8 |
37 |
|
29/01/2014 |
22.8 |
7.4 |
7.3 |
84.3 |
6.5 |
2 |
4 |
|
30/01/2014 |
23.6 |
7.4 |
7.7 |
91.3 |
13.1 |
2 |
5.5 |
|
Action Level |
- |
<5.5 or
>7.5 |
<4.61 |
- |
>94 |
- |
>75 |
|
Limit Level |
- |
<4.0 or
>8.0 |
<4.52 |
- |
>96 |
- |
>75 |
Notes:
(1) “<2 “ : 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.
During January 2014, no exceedance of air
quality, construction noise and water quality was observed at all measurement
locations.
This report
documents surveys conducted in the Survey Area between 1 and 31 January 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.
A total of
34 bird species were recorded in the Survey Area (excluding the WRA), 19 of
which were species of conservation importance and/or wetland-dependence. Within
the WRA, 36 bird species were recorded, 18 of which were species of conservation
importance and/or wetland-dependent species, including two of the target
species (i.e. Little Egret and Chinese Pond Heron) was recorded. The WRA
continues to attract a number of species of conservation importance, including
Northern Shoveler, Anas clypeata.
This species is listed by Fellowes et al.
as of “Regional Concern” in 2002. A summary
of survey data is provided in Appendix I.
No herpetofauna surveys were scheduled in the period. No amphibian species or reptile species were recorded in other surveys. A summary of the survey findings is provided in Appendix J.
No dragonfly and butterfly surveys were scheduled in the period. 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 the WRA during regular survey and additional night search. A summary of the
survey findings is provided in Appendix J.
No water
quality issue was recorded during the reporting period. Monitoring data are presented in Appendix K.
All
sighted Red Fire Ant nests were treated with approved pesticide.
Ecological monitoring during January 2014 was carried out according to
the survey methodology and frequency outlined in the EM&A Manual.
Summary of
survey findings is listed as follows:
Table 4.1: Summary of Ecological Monitoring in WRA and Survey Area
|
Species |
Survey Area (excluding WRA) |
WRA |
|
Birds (total) |
34 |
36 |
|
Birds (of conservation importance and/or
wetland-dependence) |
19 |
18 |
|
Amphibians |
0 |
0 |
|
Reptiles |
0 |
0 |
|
Mammals |
0 |
0 |
|
Odonates |
0 |
0 |
|
Butterflies |
0 |
0 |
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 30 January 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 as below:
Table 5.1: Construction and Operation Phase Audit Summary
|
Area of Works |
Items to be Monitored |
|
Works Area |
The boundaries of
the works area have been established on site in accordance with the contract
documents and approved plans (EP), and the limit of current heavy
construction activity is now confined to within the site hoardings (North
side of the site / access road) and the noise barriers (other sides of the
site). Minor works such as horticultural maintenance of the planting and
transplanted trees, and boundary fence repair was proceeding along the Royal
Palms – Palm Springs boundary. 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. |
|
Noise Barrier |
Noise barriers have been installed along the
southern and western boundaries of the site in accordance with the contract
requirements. Their design complies
with the mitigation requirements, with upper 6 to 7m portion of the barrier
being made from a translucent material with green tinted (to match with the
environment). Supporting GMS structure, likewise, has been painted green. |
|
Night-time
lighting |
No night-time works were reported to have
been carried out during the monitoring period |
|
Landscape and
wetland treatments 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. 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. |
|
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. 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 advance planting, the compensatory
planting and transplanted trees are generally being maintained by the
landscape sub-contractor in accordance with the specification to ensure that
the contract requirements are met, although treatment of damaged / defective
trees needs urgent attention. Some of the trees that were identified as
dead in previous month still need to be replaced with new specimens. Trees
with significant defects (i.e. extensive bark damage, cavities, fungal
growths, etc.) need to be replaced with new specimens. Growth of many trees and shrubs continues to
be seriously affected by overhanging / fallen trees on the adjacent
property. Removal of these overhanging / fallen trees needs to be undertaken
immediately. Supporting collars of established trees
should be removed. Many trees are growing (and have become
dependent for support) on the noise barrier frame, and are being deformed
and damaged. Trees should either be
physically separated from the structure, or the structure modified to avoid
impacting on trees. Pruning of tall shrubs (e.g. Ligustrum sinensis) needs to be
undertaken regularly. Removal of extensive growth of weeds and
invasive climbers in the space behind screen noise barrier has been carried
out, but clearance needs to be undertaken on a monthly basis as they may be
inhibiting the advance planting. Phragmites
australis reeds are now occupying up to 80% of the reed bed areas within the
WRC (as per design), but have also spread to the non-reed bed areas and are
out-competing the intended planting. Regular horticultural maintenance (grass
cutting, weeding, watering etc.) in the shrubs and tree seedling areas
around the WRA cells is being undertaken. The trees / shrubs planted along the northern
site boundary are showing seasonal insect infestation again. Growth of shrubs / seedlings on the north
side of WRA1 is still unsatisfactory. |
The ET had carried
out construction phase weekly site inspections on 7, 14, 21 and 28 January 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) |
|
Potential fugitive dust nuisance to nearby
sensitive receivers (14 Jan 2014) |
To provide water spray frequently for haul roads and dusty site works |
Agreed and followed
up |
Y (21 Jan 2014) |
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, 22.77 tonnes C&D material was generated on site
during the period. 4 kg of metals was generated and collected by registered
recycling collector. 2 kg of paper/cardboard packing and 3 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 is no breach of Action or Limit Levels for Air Quality and Noise monitoring in the reporting month.
During January 2014, no exceedance of water, air and noise was observed at all measurement locations.
Table 7.1: Summary of Exceedances in Water Quality
|
Monitoring Date |
pH |
Dissolved Oxygen
(mg/L) |
Turbidity (NT) |
Suspended Solids
(mg/L) |
|
MP3 |
|
|
|
|
|
02/01/2014 |
7.4 |
8.4 |
22.2 |
9 |
|
04/01/2014 |
7.4 |
9.5 |
22.5 |
20 |
|
06/01/2014 |
7.4 |
8.8 |
27.2 |
6.5 |
|
08/01/2014 |
7.4 |
8.9 |
20.4 |
4 |
|
10/01/2014 |
7.4 |
8.4 |
36.1 |
5 |
|
13/01/2014 |
7.5 |
7.4 |
28.1 |
7 |
|
15/01/2014 |
7.4 |
8.3 |
23.0 |
13.5 |
|
17/01/2014 |
7.4 |
9.3 |
12.0 |
10.5 |
|
20/01/2014 |
7.5 |
8.3 |
14.9 |
5 |
|
22/01/2014 |
7.5 |
8.5 |
14.9 |
10.5 |
|
24/01/2014 |
7.4 |
8.2 |
19.1 |
18.5 |
|
27/01/2014 |
7.5 |
8.1 |
15.8 |
10 |
|
29/01/2014 |
7.4 |
8.3 |
9.1 |
8.5 |
|
30/01/2014 |
7.4 |
7.6 |
9.6 |
10.5 |
|
Action Level |
<5.5 or
>7.5 |
<6.85 |
>64 |
>65 |
|
Limit Level |
<4.0 or
>8.0 |
<6.65 |
>67 |
>66 |
|
|
|
|
|
|
|
MP4 |
|
|
|
|
|
02/01/2014 |
7.4 |
8.7 |
20.6 |
13 |
|
04/01/2014 |
7.4 |
9.1 |
16.7 |
31 |
|
06/01/2014 |
7.4 |
8.3 |
25.0 |
2 |
|
08/01/2014 |
7.4 |
8.5 |
22.1 |
4.5 |
|
10/01/2014 |
7.4 |
8.4 |
51.5 |
6.5 |
|
13/01/2014 |
7.4 |
6.9 |
49.6 |
6.5 |
|
15/01/2014 |
7.4 |
8.7 |
31.5 |
7.5 |
|
17/01/2014 |
7.4 |
9.0 |
18.9 |
5 |
|
20/01/2014 |
7.4 |
8.2 |
30.5 |
4 |
|
22/01/2014 |
7.4 |
8.7 |
19.7 |
12 |
|
24/01/2014 |
7.4 |
7.8 |
23.0 |
21 |
|
27/01/2014 |
7.4 |
8.3 |
41.4 |
35.5 |
|
29/01/2014 |
7.4 |
7.5 |
6.4 |
5.5 |
|
30/01/2014 |
7.4 |
7.2 |
6.4 |
5.5 |
|
Action Level |
<5.5 or
>7.5 |
<3.91 |
>60 |
>50 |
|
Limit Level |
<4.0 or
>8.0 |
<3.82 |
>64 |
>53 |
|
|
|
|
|
|
|
MP5 |
|
|
|
|
|
02/01/2014 |
7.4 |
8.3 |
21.5 |
15.5 |
|
04/01/2014 |
7.4 |
8.5 |
12.4 |
17 |
|
06/01/2014 |
7.4 |
8.4 |
26.5 |
2 |
|
08/01/2014 |
7.4 |
8.2 |
25.3 |
4 |
|
10/01/2014 |
7.4 |
8.8 |
48.5 |
5.5 |
|
13/01/2014 |
7.4 |
6.7 |
46.5 |
6 |
|
15/01/2014 |
7.4 |
8.7 |
28.3 |
7 |
|
17/01/2014 |
7.4 |
9.6 |
16.2 |
4 |
|
20/01/2014 |
7.4 |
8.7 |
31.9 |
4.5 |
|
22/01/2014 |
7.4 |
8.5 |
19.1 |
15 |
|
24/01/2014 |
7.4 |
8.3 |
22.2 |
19.5 |
|
27/01/2014 |
7.4 |
7.6 |
40.3 |
33 |
|
29/01/2014 |
7.4 |
8.0 |
6.4 |
5 |
|
30/01/2014 |
7.4 |
7.7 |
9.9 |
5.5 |
|
Action Level |
<5.5 or
>7.5 |
<4.13 |
>81 |
>66 |
|
Limit Level |
<4.0 or
>8.0 |
<3.87 |
>84 |
>69 |
|
|
|
|
|
|
|
MP6 |
|
|
|
|
|
02/01/2014 |
7.4 |
8.5 |
27.2 |
16 |
|
04/01/2014 |
7.4 |
8.8 |
13.5 |
28.5 |
|
06/01/2014 |
7.4 |
8.4 |
28.0 |
2 |
|
08/01/2014 |
7.4 |
7.8 |
21.9 |
4 |
|
10/01/2014 |
7.4 |
8.1 |
51.4 |
5.5 |
|
13/01/2014 |
7.4 |
6.1 |
46.7 |
6 |
|
15/01/2014 |
7.4 |
8.4 |
29.9 |
6.5 |
|
17/01/2014 |
7.4 |
8.8 |
18.1 |
4.5 |
|
20/01/2014 |
7.4 |
7.4 |
31.2 |
4 |
|
22/01/2014 |
7.4 |
7.9 |
19.0 |
15 |
|
24/01/2014 |
7.4 |
8.2 |
24.1 |
21 |
|
27/01/2014 |
7.4 |
7.6 |
40.7 |
37 |
|
29/01/2014 |
7.4 |
7.3 |
6.5 |
4 |
|
30/01/2014 |
7.4 |
7.7 |
13.1 |
5.5 |
|
Action Level |
<5.5 or
>7.5 |
<4.61 |
>94 |
>75 |
|
Limit Level |
<4.0 or
>8.0 |
<4.52 |
>96 |
>75 |
Notes:
(1) Values Bold indicate Action Level exceedance.
(2) Values Underlined and Bold indicate
Limit Level exceedance.
In January 2014, a formal complaint was made to the Environmental Protection Department (EPD) on dust impact at Palm Springs, Yuen Long. The complaint concerned suspected dust emissions from the Wo Shang Wai construction site. According to the complainant, the Contractor had not implemented suitable dust and mud prevention measures which had caused large air quality impact to Narcissus Path, Arcadia, Palm Springs, and area inside Palm Springs. The complainant further added that dust and mud nuisance over a long period from works in the Wo Shang Wai construction site had caused dust to settle in Narcissus Path and Banyan Path, Arcadia, Palm Springs.
Mott MacDonald Hong Kong Limited as the Environmental Team (ET) for the Proposed Comprehensive Development at Wo Shang Wai, Yuen Long, received the formal complaint on 24 January 2014 via email from EPD. environmental complaint was received during the reporting month.
No notifications of summons or successful prosecution were received during the reporting month.
Non-compliance
Not applicable for this reporting month.
Complaints
ET conducted an investigation into the complaint and the findings will
be reported in the next Monthly EM&A Report (February 2014).
Summons and Prosecutions
Not applicable for this reporting month.
Non-compliance
Not applicable for this reporting month.
Complaints
These will be reported in the next Monthly EM&A Report (February
2014).
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 (Jan 2014) |
1 |
0 |
0 |
|
From 12 May 2010 to end of the reporting month (Jan
2014) |
6 |
0 |
0 |
The major site works to be
commissioned in the coming month include:
¡ Site formation
¡ Foundation work
¡ Superstructure
¡ 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 February 2014 is shown in the Table 8.1. Since the Project site is closed during the first calendar week of February 2014, no air quality and construction noise monitoring is scheduled for that week.
Table 8.1: Tentative Environmental Monitoring and Audit Schedule for February 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 and SS) under monitoring have been checked against established Action and Limit levels.
There was no breach of Action and Limit Levels for 1-hr TSP,
24-hr TSP and noise in the
reporting month.
Furthermore, no exceedance of water quality parameters was observed
during the reporting month.
In January 2014, a formal complaint was made to the Environmental
Protection Department (EPD) on dust impact at Palm Springs, Yuen Long. The
complaint concerned suspected dust emissions from the Wo Shang Wai construction
site. The ET received the formal complaint on 24 January 2014 via email from
EPD. ET conducted an investigation into the complaint and the findings will be
reported in the next Monthly EM&A Report (February 2014).
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 |
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 |
|
January 2014 |
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
10 |
11 |
12 |
13 |
14 |
15 |
|
Mammals |
|
|
ü |
|
|
|
ü |
|
|
|
|
|
|
ü |
|
|
Birds |
|
|
ü |
|
|
|
ü |
|
|
|
|
|
|
ü |
|
|
Herpetofauna |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Dragonflies & butterflies |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Water Quality |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Inspection Visits |
|
|
ü |
|
|
|
ü |
|
|
ü |
|
|
|
ü |
|
|
January 2014 |
16 |
17 |
18 |
19 |
20 |
21 |
22 |
23 |
24 |
25 |
26 |
27 |
28 |
29 |
30 |
31 |
|
Mammals |
|
|
|
|
|
ü |
|
|
|
|
|
|
ü |
|
|
|
|
Birds |
|
|
|
|
|
ü |
|
|
|
|
|
|
ü |
|
|
|
|
Herpetofauna |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Dragonflies & butterflies |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Water Quality |
|
|
|
|
|
|
|
|
ü |
|
|
|
|
|
|
|
|
Inspection Visits |
|
ü |
|
|
|
ü |
|
|
ü |
|
|
|
ü |
|
|
|
Note: Light
grey cells indicate public holidays, Saturdays or Sundays.
.
Table I1. Summary
of bird species of conservation importance and/or wetland-dependence recorded
in the Survey Area (excluding the WRA)
|
Species Name(5) |
Scientific Name(5) |
Conservation Status (2) |
Jan 2014 |
|
|
Occurrence(3) |
Mean(4) |
|||
|
Little Grebe |
Tachybaptus ruficollis |
LC, (1) |
5 |
5.6 |
|
Great Cormorant |
Phalacrocorax carbo |
PRC, (1) |
5 |
3.4 |
|
Grey Heron |
Ardea cinerea |
PRC, (1) |
5 |
4.6 |
|
Great Egret |
Egretta alba |
PRC, (RC), (1) |
5 |
3.8 |
|
Little Egret |
Egretta garzetta |
PRC, (RC), (1) |
5 |
9.6 |
|
Chinese Pond Heron |
Ardeola bacchus |
PRC, (RC), (1) |
5 |
8.4 |
|
Black-faced Spoonbill |
Platalea minor |
PGC, (1) |
- |
- |
|
Northern Shoveler |
Anas clypeata |
RC, (1) |
4 |
5.8 |
|
Tufted Duck |
Aythya fuligula |
LC, (1) |
5 |
13.0 |
|
Black Kite |
Milvus migrans |
RC, (1) |
1 |
0.2 |
|
White-breasted Waterhen |
Amaurornis phoenicurus |
(1) |
- |
- |
|
Green Sandpiper |
Tringa ochropus |
(1) |
1 |
0.2 |
|
Common Sandpiper |
Actitis hypoleucos |
(1) |
3 |
1.6 |
|
White-throated Kingfisher |
Halcyon smyrnensis |
LC, (1) |
1 |
0.2 |
|
Common Kingfisher |
Alcedo atthis |
(1) |
3 |
1.0 |
|
Eastern Yellow Wagtail |
Motacilla tschutschensis |
(1) |
5 |
3.2 |
|
White Wagtail |
Motacilla alba |
(1) |
5 |
8.2 |
|
Richard's Pipit |
Anthus richardi |
(1) |
5 |
1.6 |
|
Red-billed Starling |
Spodiopsar sericeus |
(1) |
1 |
5.4 |
|
No. of
Species Recorded |
19 |
|||
(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 2013-2-25).
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) |
Jan 2014 |
Records Outside Surveys |
|
|
Occurrence(3) |
Mean(4) |
||||
|
Little Grebe |
Tachybaptus ruficollis |
LC, (1) |
5 |
1.8 |
ü |
|
Great Cormorant |
Phalacrocorax carbo |
PRC, (1) |
3 |
0.6 |
ü |
|
Grey Heron |
Ardea cinerea |
PRC, (1) |
4 |
1.6 |
ü |
|
Great Egret |
Egretta alba |
PRC, (RC), (1) |
4 |
1.2 |
ü |
|
Little Egret |
Egretta garzetta |
PRC, (RC), (1) |
5 |
4.4 |
ü |
|
Chinese Pond Heron |
Ardeola bacchus |
PRC, (RC), (1) |
5 |
6.8 |
ü |
|
Northern Shoveler |
Anas clypeata |
RC, (1) |
4 |
7.0 |
ü |
|
Black Kite |
Milvus migrans |
RC, (1) |
- |
- |
ü |
|
Little Ringed Plover |
Charadrius dubius |
(LC), (1) |
- |
- |
ü |
|
Green Sandpiper |
Tringa ochropus |
(1) |
- |
- |
ü |
|
Wood Sandpiper |
Tringa glareola |
(LC), (1) |
- |
- |
ü |
|
Common Sandpiper |
Actitis hypoleucos |
(1) |
- |
- |
ü |
|
Pied Kingfisher |
Ceryle rudis |
(LC), (1) |
- |
- |
ü |
|
Common Kingfisher |
Alcedo atthis |
(1) |
4 |
1.2 |
ü |
|
Eastern Yellow Wagtail |
Motacilla tschutschensis |
(1) |
3 |
0.6 |
ü |
|
White Wagtail |
Motacilla alba |
(1) |
3 |
1.2 |
ü |
|
Richard's Pipit |
Anthus richardi |
(1) |
2 |
0.8 |
ü |
|
Zitting Cisticola |
Cisticola juncidis |
LC, (1) |
1 |
0.4 |
ü |
|
No. of Species Recorded |
18 |
||||
(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 2013-02-25).
(*)
Eurasian Eagle Owl was observed at the boundary between the Wetland
Restoration Area and the construction site of Wo Shang Wai.
Table J1. Summary of herpetofauna monitoring in the
Survey Area (excluding the WRA)
|
Species Name |
Scientific Name |
Conservation Status(1) |
Jan
2014 |
|
|
Occurrence(2) |
Mean(3) |
|||
|
Amphibian |
No. of |
Species Recorded |
0 |
|
|
(No records in Jan 2014) |
|
|
|
|
|
|
|
|
Occurrence(2) |
Mean(3) |
|
Reptile |
No. of |
Species Recorded |
0 |
|
|
(No records in Jan 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) |
Jan 2014 |
Records Outside Surveys |
|
|
Occurrence(2) |
Mean(3) |
|
|||
|
Amphibian |
No. of |
Species Recorded |
0 |
|
|
|
(No records in Jan 2014) |
|
|
|
|
|
|
|
|
|
Occurrence(2) |
Mean(3) |
|
|
Reptiles |
No. of |
Species Recorded |
0 |
|
|
|
(No records in Jan 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) |
Jan 2014 |
|
|
|
|
|
Occurrence(2) |
Mean(3) |
|
Mammal |
No. of |
Species
Recorded |
0 |
|
|
(No
records in Jan 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) |
Jan 2014 |
Records Outside Surveys |
|
|
|
|
|
Occurrence(2) |
Mean(3) |
|
|
Mammal |
No. of |
Species
Recorded |
0 |
|
|
|
(No
records in Jan 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 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) |
Jan 2014 |
|
|
Occurrence(2) |
Mean(3) |
|||
|
Odonata |
No.
of Species Recorded |
|
||
|
(No records in Jan 2014) |
|
|
|
|
|
Butterfly |
No.
of Species Recorded |
|
||
|
(No records in Jan 2014) |
|
|
|
|
(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 and butterfly monitoring in the WRA
|
Common
Name |
Scientific Name |
Conservation Status(1) |
Jan 2014 |
|
|
Occurrence(2) |
Mean(3) |
|||
|
Odonate |
No. of
Species Recorded |
|
||
|
(No records in Jan 2014) |
|
- |
|
|
|
Butterfly |
No. of
Species Recorded |
|
||
|
(No records in Jan 2014) |
|
- |
|
|
(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 January 2014
|
Cell No. |
Temp. (°C) |
pH |
Salinity (ppt) |
Turb (mg/L) |
DO (mg/L) |
Water Level (cm) |
|
1 |
18.5 |
7.82 |
0.58 |
21.4 |
7.6 |
170 |
|
2 |
18.2 |
7.77 |
0.60 |
20.6 |
7.5 |
150 |
|
3 |
18.6 |
7.91 |
0.64 |
24.5 |
8.5 |
190 |
|
4 |
19.0 |
7.82 |
0.65 |
19.1 |
7.3 |
190 |
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; |
P |
|
· every stock of more than 20 bags of cement
or dry PFA shold 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; |
N/A |
|
· 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; |
N/A |
|
· dusty materials remaining after a stockpile
is removed should be wetted with water; |
N/A |
|
· 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; |
N/A |
|
· 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; |
N/A |
|
· 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 |
|
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 |
|
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