|
|
|
|
|
|
|
Proposed Comprehensive Development |
|
|
|
|
|
|
Issue
and revision record
|
Date |
Originator |
Checker |
Approver |
Description |
|
|
Rev. A |
Jul
2010 |
Benny
Liu |
|
Eric
Ching |
Draft |
|
Rev. B |
Jul
2010 |
Benny
Liu |
|
Eric
Ching |
For
submission |
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.
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.
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

Content
Chapter Title Page
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 in June 2010
Appendix I Summary of Bird Surveys conducted in June 2010
Appendix J Summary of Herpetofauna, and Insects Surveys conducted in
June 2010
Appendix K Environmental Mitigation Measures - Implementation Status
Executive Summary
Mott
MacDonald Hong Kong Ltd. (“MMHK”) has been commissioned by Heng Shung
Construction Co. Ltd. to undertake the Environmental Team (ET) services to
carry out environmental monitoring and audit (EM&A) for both
pre-construction and construction phases of the Proposed Comprehensive
Development at Wo Shang Wai, Yuen Long.
This
is the 2nd EM&A report submitted under the Condition 4.5 of
Environmental Permit No. EP-311/2008/A. This report summarises the findings on
EM&A during the period from 1 June to 30 June 2010.
Exceedance of Action and Limit
Levels
There
was no breach of Action or Limit levels for Air Quality (1-hr TSP and 24-hr
TSP) and Noise level (as Leq) in the reporting month.
Exceedances of Action and Limit Levels were recorded for Water Quality at MP1, MP2, MP3, MP4, MP5 and MP6 on different monitoring dates.
Exceedances of pH, DO, turbidity and SS were observed. For MP1 and MP2, there were slight exceedance of action level for pH on 17 (MP2), 21 (MP1) and 30 (MP2) June 2010. For MP3, there were exceedances of pH, DO, turbidity and SS (action and limit levels) on different monitoring dates. At MP4, there were exceedances of limit level for turbidity on 30 June 2010. At MP5, pH was exceeded (Action Level) on 7 June 2010 while turbidity and SS were exceeded on 11 and 15 June 2010 (Limit Level for SS on 11 June and Limit Level for turbidity and SS on 15 June 2010). The pH was exceeded (Action Level) on 4, 7, 9, and 17 June 2010 at MP6 during the monitoring period and there were exceedances of turbidity and SS on 7, 9, 25 and 28 June 2010 (Limit Level of turbidity and SS on 7 and 9 June; Limit Level of turbidity on 25 June; and Action Level of turbidity on 28 June 2010). For MP3, MP4, MP5, and MP6, the DO levels were exceeded on most of the monitoring dates. The summary of measured water quality is presented in Section 3.2.3.
Investigations have been carried out
to identify the causes of exceedance. From investigation, the Contractor has
implemented water quality mitigation measures as recommended in the EIA report.
With external factors affect the adjacent
environments, such as re-profiling works carried out at the fish ponds and natural variations, the exceedances were
considered not due to construction works.
Implementation of mitigation
measures
Site audits were carried out on 3, 9, 18, 23 and 30 June 2010 to confirm the implementation measures undertaken by the Contractor in
the reporting months. The outcomes are presented in Section 6 and the status of implementation of mitigation measures in
the site is shown in Appendix K.
Record of Complaints
There
was no record of complaints received in the reporting month.
Record of Notification of summons
and successful prosecution
There
was no record of Notification of summons and successful prosecution in the
reporting month.
Reporting Changes
There
are no changes to be reported this month.
Future Key Issues
The major site works to be commissioned in the coming month include Site formation and drainage work for Wetland Restoration Area (WRA), Installation of Band Drain; and Trial Embankment for Ground Improvement. Potential environmental impacts due to the
construction activities, including air quality, noise, water quality, ecology
and landscape and visual, will be monitored.
Environmental mitigation measures
will be implemented on site as recommended and weekly site audits will be
carried out to ensure that the environmental conditions are acceptable.
In March 2005, the Project
Proponent, Profit Point Enterprises Limited, acquired the development site in Yuen Long at Wo Shang Wai. An
Environmental Impact Assessment (EIA) was carried out under the EIA Ordinance
(EIAO) since then and the Environmental Permit (EP-311/2008A) for construction
of the comprehensive development in Wo Shang Wai was granted by EPD on 9
September 2008. The Project involves the residential development and associated infrastructure and wetland restoration area and linear landscape
area. The construction works under the Environmental Permit commenced on 12 May
2010.
Heng Shung Construction Co. Ltd. was commissioned as the Contractor for the Project. Mott MacDonald Hong Kong Ltd. (“MMHK”) has been commissioned by Heng Shung Construction Co. Ltd. to undertake the Environmental Team (ET) services to carry out environmental monitoring and audit (EM&A) for both pre-construction and construction phases of the Proposed Comprehensive Development at Wo Shang Wai, Yuen Long.
According to the EP Condition 4.5, the monthly EM&A Report shall be submitted to the Director within 2 weeks after the end of the reporting month. This report summarises the findings during the period from 1 June to 30 June 2010.
The organisation chart and lines of communication with respect to the
on-site environmental management structure together with the contact
information of the key personnel are shown in Appendix A.
During the reporting period,
construction works of the Project undertaken include:
ˇ
Site formation for Wetland Restoration
Area (WRA);
ˇ
Band drain work preparation; and
ˇ
Temporary drainage work
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: Summary of Impact EM&A Requirements
.
Table 1.1: Summary of Impact EM&A Requirements
|
Parameters |
Descriptions |
Locations |
Frequencies |
|
Air Quality |
24-Hour TSP |
ASR1, ASR2A, ASR3, ASR4 |
Once every 6 days |
|
1-Hour TSP |
ASR1, ASR2A, ASR3, ASR4 |
3 times every 6 days |
|
|
Noise |
Leq, 30min |
NSR1, NSR3, NSR5, NSR7 |
Weekly |
|
Water Quality |
Dissolved Oxygen (DO), temperature, pH, suspended solids (SS) and Biological Oxygen Demand (BOD) |
MP1 to MP6 |
3 days per week |
|
Ecology |
Birds |
Within the Project Area and Assessment Area of 500m |
Weekly |
|
Dragonflies and Butterflies |
Within the Project Area and Assessment Area of 500m |
Once per month during Mar and Sep to November, and twice per month during Apr to Aug |
|
|
Herpetofauna |
Within the Project Area and Assessment Area of 500m |
Once per month during Apr to Nov |
|
|
Water quality of WRA |
Wetland Restoration Area |
After filling of WRA with water, monthly for in situ water quality and every size months (end of wet season and end of dry season) for laboratory testing |
|
|
Site Inspections |
Within the Project Area and Assessment Area of 500m |
Weekly |
|
|
Landscape
and Visual |
Auditing of protection of existing
trees, the transplanting of existing trees, the creation of new wetland, the
planting of new trees and shrubs and other landscape and visual mitigation
measures |
CM1 to CM10 and OM1 to OM7 within the
Project Area |
Site inspections once every two
weeks during construction phase; once every two months during operational
phase |
The Environmental Quality Performance Limits for air quality, noise and water quality are shown in Appendix C.
The Event and Action Plan for air quality, noise and water quality are shown in Appendix D.
The monitoring schedule for the
reporting month is shown in Table 1.2
below:
Table 1.2: Environmental Monitoring and Audit Schedule for June 2010

2.
Impact Monitoring Methodology
|
For air quality, construction noise and water quality, ecology, landscape and visual monitoring
methodology, including the monitoring locations, monitoring equipments used,
monitoring parameters, and frequency and duration etc., are detailed in this
Chapter.
In accordance with the EM&A Manual, 1-hour and 24-hour TSP levels monitoring are to be conducted during the construction phase. Table 2.1 summarizes the monitoring parameters, frequency and duration of air quality monitoring.
Table 2.1: Air Quality Monitoring Parameters, Frequency and Duration
|
Parameter |
Frequency and Duration |
|
|
ASR1, ASR2A, ASR3 & ASR4 |
24-hour TSP |
At least once in every six-days |
|
1-hour TSP |
3 times every six-days |
The 4 air quality monitoring stations were established in the
EM&A manual and were slightly adjusted during the baseline monitoring
phase. Locations of the agreed air quality monitoring stations are listed in Table 2.2 and as shown in Figure 2.1.
Table 2.2: Air monitoring stations
|
Monitoring Stations |
Locations |
|
ASR1 |
Works Site Boundary |
|
ASR2A |
At the rooftop of refuse collection point,
which is located at the southwest of the project area |
|
ASR3 |
At the commercial centre at |
|
ASR4 |
Works Site Boundary |
Continuous 24-hour TSP air
quality monitoring is conducted using High Volume Sampler (HVS)
(Model: GMWS-2310 Accu-vol). The HVS meets all the requirements of the EM&A
Manual. Portable direct reading dust meters were used to carry out the 1-hour
TSP monitoring. Table 2.3 summarizes
the equipment used in the impact air quality monitoring.
Table 2.3: TSP Monitoring Equipment
|
Equipment |
Model |
|
24-hr TSP monitoring |
|
|
High
Volume Sampler |
GMWS 2310
Accu-vol |
|
Calibrator |
GMW
25 |
|
1-hr TSP monitoring |
|
|
Portable
direct reading dust meter |
8520
Dust Track Aerosol Monitor |
24-hour TSP Monitoring
Installation
The HVS was installed in the vicinity of the air sensitive receiver. The following criteria were considered in the installation of the HVS.
· A horizontal platform with appropriate support to secure the sampler against gusty wind was provided.
· The distance between the HVS and any obstacles, such as buildings, was at least twice the height that the obstacle protrudes above the HVS.
· A minimum of 2 meters separation from walls, parapets and penthouse was required for rooftop sampler.
· A minimum of 2 meters separation from any supporting structure, measured horizontally was required.
· No furnace or incinerator flues or building vent were nearby.
· Airflow around the sampler was unrestricted.
· The sampler has been more than 20 metres from any drip line.
· Permission was obtained to set up the samplers and to obtain access to the monitoring stations.
· A secured supply of electricity is needed to operate the samplers.
Preparation of Filter
Papers
· Glass fibre filters, were labelled and sufficient filters that were clean and without pinholes were selected.
· All filters were equilibrated in the conditioning environment for 24 hours before weighing. The conditioning environment temperature was around 25 °C and not variable by more than ±3 °C with relative humidity (RH) < 50% and was not variable by more than ±5 %. A convenient working RH was 40%.
Field Monitoring
· The power supply was checked to ensure the HVS works properly.
· The filter holder and the area surrounding the filter were cleaned.
· The filter holder was removed by loosening the four bolts and a new filter, with stamped number upward, on a supporting screen was aligned carefully.
· The filter was properly aligned on the screen so that the gasket formed an airtight seal on the outer edges of the filter.
· The swing bolts were fastened to hold the filter holder down to the frame. The pressure applied should be sufficient to avoid air leakage at the edges.
· The shelter lid was closed and was secured with the aluminium strip.
· The HVS was warmed-up for about 5 minutes to establish run-temperature conditions.
· A new flow rate record sheet was set into the flow recorder.
· The flow rate of the HVS was checked and adjusted at around 1.1 m3/min. The range specified in the EM&A Manual was between 0.6-1.7 m3/min.
· The programmable timer was set for a sampling period of 24 hrs + 1 hr, and the starting time, weather condition and the filter number were recorded.
· The initial elapsed time was recorded.
· At the end of sampling, the sampled filter was removed carefully and folded in half length so that only surfaces with collected particulate matter were in contact.
· It was then placed in a clean plastic envelope and sealed.
· All monitoring information was recorded on a standard data sheet.
· Filters were sent to a HOKLAS accredited laboratory for analysis.
Maintenance and
Calibration
· The HVS and its accessories are maintained in good working condition, such as replacing motor brushes routinely and checking electrical wiring to ensure a continuous power supply.
· HVSs were calibrated prior to the commencement of baseline monitoring.
· Calibration records for HVSs are shown in Appendix E.
1-hour TSP Monitoring
Field Monitoring
The measuring procedures of the 1-hour dust meter are in accordance with the Manufacturer’s Instruction Manual as follows:
·
Set POWER to “ON”, push
· Push the knob at MEASURE position.
· Push “O-ADJ” button. (Then meter’s indication is 0).
· Push the knob at SENSI ADJ position and set the meter’s indication to S value described on the Test Report using the trimmer for SENSI ADJ.
· Pull out the knob and return it to MEASURE position.
· Push “START” button.
Maintenance and
Calibration
· The 1-hour dust meter would be checked at 3-month intervals and calibrated at 1-year intervals throughout all stages of the air quality baseline monitoring.
· Calibration records for HVS and direct dust meters are shown in Appendix E.
Following the requirements in the EM&A Manual for noise, noise monitoring has to be carried out during the construction phase. Continuous noise monitoring for the A-weighted levels Leq, L10 and L90 is undertaken once per every week.
Table 2.4 summarizes the monitoring parameters, frequency and duration of air quality monitoring.
Table 2.4: Noise Monitoring Parameters, Frequency and Duration
|
Monitoring Stations |
Parameter |
Frequency and Duration |
|
NSR1, NSR3,
NSR5, NSR7 |
Leq, L90 & L10 |
Once every
week |
The 4 noise quality monitoring stations were established
in the EM&A manual and were slightly adjusted during the baseline
monitoring phase. Locations of the agreed noise quality
monitoring stations are listed in Table
2.5 and as shown
in Figure 2.2.
Table 2.5: Noise monitoring stations
|
Monitoring Stations |
Locations |
Type of measurement |
|
NSR1 |
Noise monitoring equipment was set up near
the boundary wall at |
Free-field |
|
NSR3 |
The monitoring station was located next to
the guard house at |
Facade |
|
NSR5 |
The monitoring station was located within
the work site boundary. |
Free-field |
|
NSR7 |
The monitoring station was located near the
boundary wall of the house of Mai Po San Tsuen. |
Free-field |
Integrating Sound Level Meter will be used for noise monitoring. It is a Type 1 sound level meter capable of giving a continuous readout of the noise level readings including equivalent continuous sound pressure level (Leq) and percentile sound pressure level (Lx). They comply with International Electrotechnical Commission Publications 651:1979 (Type 1) and 804:1985 (Type 1). Table 2.6 summarizes the noise monitoring equipment model being used.
Table 2.6: Noise Monitoring Equipment
|
Monitoring locations |
Equipment Model |
|
|
Integrating Sound
Level Meter |
Calibrator |
|
|
NSR1 |
Rion
NL-31 |
Rion
NC-73 |
|
NSR3 |
||
|
NSR5 |
||
|
NSR7 |
||
Field Monitoring
· The Sound Level Meter was set on a tripod at a height of at least 1.2 m above the ground.
· Façade and free-field measurements were made at the monitoring locations.
· The battery condition was checked to ensure the correct functioning of the meter.
· Parameters such as frequency weighting, the time weighting and the measurement time were set as follows:
- frequency weighting: A
- time weighting: Fast
- time measurement: 30 minutes intervals (between 0700 and 1900)
· Prior to and after each noise measurement, the meter was calibrated using a Calibrator for 94 dB at 1 kHz. If the difference in the calibration level before and after measurement was more than 1 dB, the measurement would be considered invalid has to be repeated after re-calibration or repair of the equipment.
· During the monitoring period, the Leq, L10 and L90 were recorded. In addition, any site observations and noise sources were recorded on a standard record sheet.
Maintenance and
Calibration
· The microphone head of the sound level meter and calibrator is cleaned with soft cloth at quarterly intervals.
·
The meter and calibrator are
sent to the supplier or HOKLAS laboratory to check and calibrate at yearly
intervals.
·
Calibration records are shown
in Appendix E.
In accordance with the requirements in the EM&A
Manual for water quality, water quality parameters including
Dissolved Oxygen (DO), temperature, pH, turbidity, suspended solids (SS) and
Biochemical Oxygen Demand (BOD) have to be monitored at designated monitoring
stations during construction of the Project. DO, temperature and
pH were measured in-situ whereas SS and BOD were analysed in a laboratory. The measurements should be taken at
all designated monitoring stations, 3 days per week. The interval between any
two sets of monitoring was not less than 36 hours. Table 2.7 summarizes
the monitoring parameters, frequency and duration of water quality monitoring.
Table 2.7: Water Quality
Monitoring Parameters, Frequency and Duration
|
Monitoring Stations |
Parameter |
Frequency and Duration |
|
MP1, MP2, MP3,
MP4, MP5 & MP6 |
DO,
temperature, pH, SS, turbidity, BOD |
Three days
every week |
The 6 water quality
monitoring stations were established in the EM&A manual. Locations of the
agreed water quality monitoring stations are listed in Table 2.8 and as shown in Figure 2.3.
Table 2.8: Water quality monitoring
stations
|
Monitoring Stations |
Easting |
Northing |
|
MP1 |
838 730.50 |
822 862.25 |
|
MP2 |
838 933.26 |
823 247.41 |
|
MP3 |
839 107.17 |
823 596.84 |
|
MP4 |
839 286.14 |
823 638.55 |
|
MP5 |
839 134.35 |
823 722.99 |
|
MP6 |
839 063.02 |
823 842.25 |
The Water Quality Monitoring Equipments and Analytical Methods applied to Water Quality Samples are given in Table 2.9 and Table 2.10 respectively. Details of which are discussed below.
Table 2.9: Water Quality Monitoring Equipments
|
Equipment |
Model |
Equipment /Serial Number |
|
Dissolved oxygen, temperature & pH Measuring
Meter |
YSI Professional Plus |
09K100735 |
|
Turbidimeter |
Hach 2100Q |
09120C000514 |
|
Global Positioning System (GPS) |
Garmin
eTrex |
ENO 007 |
Table 2.10: Analytical Methods applied to Water Quality Samples
|
Determinant, unit |
Standard Method |
|
Total Suspended Solids, mg/L |
In house method based on APHA 2540D; ALS Method
Code: EA-025 |
|
Biochemical Oxygen Demand (BOD), mg/L |
In house method based on APHA 5210B; ALS Method
Code: EP-030 |
All in-situ monitoring instruments were checked, calibrated and
certified by a laboratory accredited under HOKLAS or
any other international accreditation scheme before use.
Dissolved Oxygen (DO), temperature and pH measuring equipment
A portable, weatherproof multiparameter instrument YSI 556 MPS was used in the baseline monitoring. It can be capable for measuring dissolved oxygen (DO), pH, and temperature simultaneously with the following limits:
· a dissolved oxygen level in the range of 0-50 mg/L and 0-500 % saturation;
· a temperature of -5 to 45 degree Celsius; and
· pH value of 0-14 with 0.1 as the base unit.
Turbidity Measurement Instrument
Portable and weatherproof turbidity meter (HACH model 2100P) was used during impact monitoring. It has a photoelectric sensor capable of measuring turbidity between 0-1000 NTU. Response of the sensor was checked with certified standard turbidity solutions before the start of measurement.
Global Positioning System
A hand-held GPS navigator (Garmin eTrex
Suspended Solids and BOD
Measurements (Sample Containers and Storage)
Water samples for SS analysis were
stored in high density polythene bottles with no preservative added, packed in
ice (cooled to 4oC without being frozen), delivered to the
laboratory, and analysed as soon as possible after collection. Analysis was
carried out in a HOKLAS accredited laboratory.
Detection
Limit
The
limits of detection for the in-situ and laboratory measurements are shown in Table
2.11.
Table 2.11: Detection Limits for Water Quality Determinants
|
Determinant |
Limit of Detection |
|
Dissolved Oxygen |
0.1 mg/L |
|
Temperature |
0.1 degree Celsius |
|
pH |
0.01 unit |
|
Turbidity |
0.1 NTU |
|
Suspended Solids |
1 mg/L |
|
BOD |
2 mg/L |
In situ measurement
All pH meters, DO/ temperature meters
had been checked and calibrated prior to use. Standard buffer solution of at
least 2 pH levels (either pH 4 and pH 7 or pH 7 and pH 10) had been used for
calibration of the instrument before and after use.
DO meters had been calibrated by a
laboratory accredited under HOKLAS or any other international accreditation
scheme, and subsequently re-calibrated at 3 monthly intervals throughout all
stages of the water quality monitoring. Responses of sensors and electrodes had
been checked with certified standard solutions before each use. Wet bulb
calibrations for all DO meters had been carried out before measurement at each
monitoring location. For the on site calibration of field equipment, BS
127:1993, "Guide to field and on-site test methods for the analysis of
waters" had been observed.
Measurements shall be at 3 water
depths, namely, 1m below water surface, mid-depth and 1m above stream bed/pond
bed, except where the water depth less that 6m, the middepth station maybe
omitted. Should the water depth be less than 3m, only the mid-depth station
will be monitored.
Replicates in-situ measurements
and samples collected from each independent monitoring event are required for
all parameters to ensure a robust statistically interpretable dataset.
Water Samples Preparation and
Analysis
For collection of water sampling
within the water courses, a 500ml clean plastic beaker was used. After
collection, the water samples were stored in high-density polythene bottles.
The sample container was rinsed with a portion of the water sample. The water sample was then transferred to
the container, labelled with a unique sample ID and sealed with a screw cap. The water samples
were stored in a cool box maintained at 4oC. The water samples were then delivered to
a local HOKLAS-accredited laboratory (ALS) on the same day for analysis.
The testing methods of testing
parameters as recommended by EIA or required by EPD, with the QA/QC results are in accordance with the requirement of
HOKLAS or international accredited scheme.
The
calibration certificates for equipments used for in-situ
monitoring of water quality are attached in Appendix E.
Target species and certain other
fauna will be monitored within the Project Area and Assessment Area during the
wetland and residential construction phase. This will be important to ensure
that any unexpected events or impacts either on- or off-site are quickly
identified so that remedial action can be taken. The groups to be monitored and frequency of
monitoring are shown in Table 2.12.
Table 2.12: Summary of Construction Phase Ecological Monitoring
for the Wo Shang Wai WRA
|
|
Construction Phase Ecological Monitoring |
|
Birds |
Weekly (including
Assessment Area). |
|
Dragonflies and
Butterflies |
Once per month during
March and September to November, and twice per month during April to August. |
|
Herpetofauna |
Once per month during
April to November. |
|
Water Quality |
After filling of WRA
with water, monthly for in situ
water quality and every six months (end of the wet season and end of the dry
season) for laboratory testing. |
|
Site Inspections |
Weekly. |
Ecological
monitoring locations during
construction phase are shown in Figure 4.1 and the methodology for ecological monitoring
is detailed in Section 4.
·
The extent of the agreed works area should be regularly
checked during the construction phase. Any trespass by the Contractor outside
the limit of the works, including any damage to existing trees and woodland
shall be noted;
·
The progress of the engineering works should be regularly
reviewed on site to identify the earliest practical opportunities for the
landscape works to be undertaken;
·
All existing vegetation, streams and other features within
the study area which are not directly affected by the works are retained and
protected;
·
The methods of protecting existing vegetation proposed by the
Contractor are acceptable and enforced;
·
Preparation, lifting transport and re-planting operations for
any transplanted trees;
·
The layout, design and construction of buildings conforms to
requirements specified in the EIA report;
·
All landscaping works are carried out in accordance with the
EIA recommendations and with specifications;
·
The planting of new trees, shrubs, groundcover, climbers,
grasses and other plans, together with the replanting of any transplanted trees
are carried out properly and within the right season;
·
All necessary horticultural operations and replacement
planting are undertaken throughout the Establishment Period to ensure the
healthy establishment and growth of both transplanted trees and all newly
establishment plants.
Table 2.13: Construction and Operation
Phase Audit Checklist
|
Area
of Works |
Items
to be Monitored |
|
Works Area |
Check the extent of the Works to ensure that the
Works Area is not exceeded |
|
Protection of all trees and woodland blocks to be
retained |
Identification and demarcation of trees / vegetation
to be retained, erection of physical protection (e.g. fencing), monitoring
against possible incursion, physical damage, fire, pollution, surface
erosion, etc. |
|
Streams |
Ensure no run-off into existing streams |
|
Clearance of existing vegetation |
Identification and demarcation of trees / vegetation
to be cleared, checking of extent of works to minimize damage, monitoring of adjacent
areas against possible incursion, physical damage, fire, pollution, surface
erosion, etc. |
|
Transplanting of trees |
Identification and demarcation of trees / vegetation
to be transplanted, monitoring of extent of pruning / lifting works to minimize
damage, timing of operations implementation of all stages of preparatory and
translocation works, and maintenance of transplanted vegetation, etc. |
|
Topsoil stripping |
Ensuring existing topsoil is stripped and stored under
recognized good practice and is hydroseeded and regularly turned to prevent
anaerobic conditions |
|
New buildings |
Ensure that building finishes accord with mitigation
proposals with regard to colour and albedo. |
|
Boundaries |
Ensuring hoarding are erected as required |
|
Noise Barrier |
Ensure noise barrier design accords with the
mitigation proposals with regard to location, materials and finishes. |
|
Night-time lighting |
Ensuring night-time lighting is directional, hooded and
shielded away from VSRs |
|
Plant supply |
Monitoring of operations relating to the supply of
specialist plant material (including the collecting, germination and growth
of plants from seed) to ensure that plants will be available in time to be
used within the construction works. |
|
Landscape and wetland treatments generally |
Check that wetland, and hard / soft landscape designs
conform to intent of mitigation measures and agreed designs |
|
Soiling, planting, etc. |
Monitoring of implementation and maintenance of
soiling and planting works against possible incursion, physical damage, fire,
pollution, surface erosion, etc. |
|
Establishment Works |
Monitoring of implementation of maintenance operation
during Establishment Period |
The monitoring locations should
check against the mitigation measures proposed under the approved Environmental
Impact Assessment, which are summarised as follows:
Table 2.14: Proposed Construction Phase
Mitigation Measures
|
ID
No. |
Landscape
and Visual Mitigation Measure |
|
CM1 |
The construction area and contractor’s temporary works
areas should be minimised to avoid impacts on adjacent landscape. |
|
CM2 |
Screening of construction works by hoardings/noise
barriers around Works area in visually unobtrusive colours, to screen Works. |
|
CM3 |
Reduction of construction period to practical
minimum. |
|
CM4 |
Topsoil, where identified, should be stripped and
stored for re-use in the construction of the soft landscape works, where the
soil material meets acceptable criteria and where practical. The Contract Specification shall include
storage and reuse of topsoil as appropriate. |
|
CM5 |
Hydroseeding or sheeting of soil stockpiles with
visually unobtrusive material (in earth tone). |
|
CM6 |
Advance screen planting to noise barriers. |
|
CM7 |
Control night-time lighting and glare by hooding all
lights. |
|
CM8 |
Ensure no run-off into streams adjacent to Project
Area. |
|
CM9 |
Protection of existing trees on boundary of project
area shall be carefully protected during construction. Detailed Tree Protection Specification
shall be provided in the Contract Specification. Under this specification,
the Contractor shall be required to submit, for approval, a detailed working
method statement for the protection of trees prior to undertaking any works
adjacent to all retained trees, including trees in contractor’s works
areas. (Tree protection measures will
be detailed at S16 and Tree Removal Application stage). |
|
CM10 |
Trees unavoidably affected by the works shall be
transplanted where practical. Trees
should be transplanted straight to their destinations and not held in a
nursery. A detailed Tree Transplanting
Specification shall be provided in the Contract Specification, if applicable.
Sufficient time for necessary tree root and crown preparation periods shall
be allowed in the project programme. |
Table 2.15: Proposed Operation Phase
Mitigation Measures
|
ID
No. |
Landscape
Mitigation Measure |
|
OM1 |
Compensatory Tree Planting for all felled trees shall
be provided to the satisfaction of relevant Government departments. Required numbers and locations of
compensatory trees shall be determined and agreed separately with Government
during the Tree Felling Application process under ETWBTC 3/2006. |
|
OM2 |
A continuous belt of screen planting along southern
perimeter of project area with fast growing tree species. At least 450 trees capable of reaching a
height > 10m within 10 years should be planted. Planting of the belt of trees shall be
carried out as advance works ahead of other site formation and building
works. |
|
OM3 |
Maximise soft landscape and amenity water bodies in
residential areas of the development.
Approximately 750 of trees (of Heavy Standard size) should be
planted. Where space permits, roadside
berms should be created. Street trees should be of species that reach a
mature height of no less than 15m. |
|
OM4 |
Maximise freshwater habitat wetland creation consistent
with achieving other parameters. Min
4.74 ha to be provided. Wetlands must
have natural edge profiles with >1m wide emergent zone. No access to the wetland by residents and
all wetlands must be screened from residential development by a continuous
tree screen at interface with residential development or earth mounding such
that disturbance is minimised. Implementation of the wetland shall be carried
out as advance works. |
|
OM5 |
Use appropriate (visually unobtrusive and
non-reflective) building materials and colours in built structures. |
|
OM6 |
During detailed design, refine building layout to
create a min 10m wide gap between buildings north of Wo Shang Wai pond and
also two min 10m wide gaps in the row of buildings adjacent to Royal Palms. |
|
OM7 |
Streetscape elements (e.g. paving, signage, street
furniture, lighting etc.) shall be sensitively designed in a manner that
responds to the local context, and minimises potential negative landscape and
visual impacts. Lighting units should
be directional and minimise unnecessary light spill. |
Impact monitoring for air quality (dust), noise and water quality
due to the construction work were undertaken during the reporting month in compliance
with the EM&A manual in the reporting period. Regular site inspections were
carried out on 3, 9, 18, 23 and 30 June 2010 in the reporting month to assess
the compliance with environmental requirements.
Results of 1-hour TSP at the four monitoring locations are summarised in Table 3.1. Graphical plots of the monitoring results are shown in Appendix F.
Table 3.1: Summary of 1-hour TSP monitoring results
|
Monitoring Date |
Start Time |
1-hr TSP (μg/m3) |
Range (μg/m3) |
Action Level (μg/m3) |
Limit Level (μg/m3) |
|||
|
1st Result |
2nd Result |
3rd Result |
||||||
|
ASR1 |
||||||||
|
3-Jun-10 |
12:45 |
83 |
95 |
99 |
41 - 99 |
378 |
500 |
|
|
9-Jun-10 |
12:56 |
68 |
55 |
50 |
||||
|
15-Jun-10 |
12:42 |
45 |
41 |
42 |
||||
|
21-Jun-10 |
12:47 |
48 |
43 |
50 |
||||
|
25-Jun-10 |
12:50 |
53 |
50 |
56 |
||||
|
ASR2A |
||||||||
|
4-Jun-10 |
12:48 |
170 |
161 |
184 |
40 - 184 |
357 |
500 |
|
|
10-Jun-10 |
12:47 |
45 |
51 |
59 |
||||
|
17-Jun-10 |
12:46 |
49 |
48 |
55 |
||||
|
22-Jun-10 |
12:48 |
43 |
55 |
59 |
||||
|
28-Jun-10 |
12:56 |
40 |
42 |
44 |
||||
|
ASR3 |
||||||||
|
4-Jun-10 |
8:50 |
106 |
120 |
132 |
41 - 132 |
358 |
500 |
|
|
10-Jun-10 |
9:04 |
57 |
56 |
44 |
||||
|
17-Jun-10 |
8:45 |
59 |
52 |
61 |
||||
|
22-Jun-10 |
8:55 |
55 |
45 |
42 |
||||
|
28-Jun-10 |
8:53 |
41 |
46 |
48 |
||||
|
ASR4 |
||||||||
|
3-Jun-10 |
8:52 |
77 |
83 |
80 |
43 - 83 |
372 |
500 |
|
|
9-Jun-10 |
8:57 |
45 |
51 |
52 |
||||
|
15-Jun-10 |
8:35 |
43 |
47 |
45 |
||||
|
21-Jun-10 |
8:50 |
66 |
57 |
51 |
||||
|
25-Jun-10 |
9:04 |
51 |
57 |
62 |
||||
Results of 24-hour TSP at the four monitoring locations are summarised in Table 3.2. Graphical plots of the monitoring results are shown in Appendix F.
Table 3.2: Summary of 24-hour TSP monitoring results
|
Monitoring Date |
Monitoring Results (μg/m3) |
Range (μg/m3) |
Action Level (μg/m3) |
Limit Level (μg/m3) |
|
ASR1 |
|
|
|
|
|
3-Jun-10 |
88 |
64 -
88 |
226 |
260 |
|
9-Jun-10 |
70 |
|||
|
15-Jun-10 |
85 |
|||
|
21-Jun-10 |
64 |
|||
|
25-Jun-10 |
67 |
|||
|
ASR2A |
|
|
|
|
|
4-Jun-10 |
79 |
48 -
89 |
213 |
260 |
|
10-Jun-10 |
48 |
|||
|
17-Jun-10 |
86 |
|||
|
22-Jun-10 |
69 |
|||
|
28-Jun-10 |
67 |
|||
|
ASR3 |
|
|
|
|
|
4-Jun-10 |
84 |
67 -
95 |
205 |
260 |
|
10-Jun-10 |
67 |
|||
|
17-Jun-10 |
95 |
|||
|
22-Jun-10 |
81 |
|||
|
28-Jun-10 |
73 |
|||
|
ASR4 |
|
|
|
|
|
3-Jun-10 |
100 |
68 -
100 |
237 |
260 |
|
9-Jun-10 |
68 |
|||
|
15-Jun-10 |
86 |
|||
|
21-Jun-10 |
74 |
|||
|
25-Jun-10 |
77 |
No exceedance of 1-hour and 24-hour TSP (Action or Limit Level) was recorded in the reporting period.
The weather conditions in the reporting period are provided in Appendix G.
The construction noise monitoring results are summarized in Table 3.3.
Graphical plots of the monitoring data are shown in Appendix F.
Table 3.3: Summary of Construction
noise monitoring results
|
Monitoring Date |
Start Time |
Mean &
Range of Noise Levels, dB(A) |
Limit Level
for Leq (dB) |
||
|
Leq |
L10 |
L90 |
|||
|
NSR1 |
|
|
|
|
>
75 |
|
10-Jun-10 |
13:16 |
59 |
63 |
55 |
|
|
17-Jun-10 |
13:10 |
58 |
61 |
52 |
|
|
22-Jun-10 |
13:11 |
52 |
54 |
48 |
|
|
28-Jun-10 |
13:18 |
57 |
60 |
51 |
|
|
NSR3 |
|
|
|
|
|
|
10-Jun-10 |
9:24 |
58 |
63 |
52 |
|
|
17-Jun-10 |
9:25 |
50 |
52 |
48 |
|
|
22-Jun-10 |
9:15 |
52 |
54 |
50 |
|
|
28-Jun-10 |
9:10 |
53 |
55 |
49 |
|
|
NSR5 |
|
|
|
|
|
|
3-Jun-10 |
13:01 |
56 |
59 |
54 |
|
|
9-Jun-10 |
13:14 |
57 |
59 |
53 |
|
|
15-Jun-10 |
13:02 |
57 |
59 |
53 |
|
|
21-Jun-10 |
13:04 |
53 |
55 |
50 |
|
|
NSR7 |
|
|
|
|
|
|
3-Jun-10 |
9:10 |
67 |
69 |
64 |
|
|
9-Jun-10 |
9:20 |
67 |
69 |
64 |
|
|
15-Jun-10 |
9:00 |
67 |
69 |
64 |
|
|
21-Jun-10 |
9:10 |
65 |
67 |
62 |
|
No exceedance (Action/Limit Level) of construction noise was recorded in the reporting period.
The water quality monitoring results are summarized in Table 3.4. Graphical plots of the monitoring data are shown in Appendix F.
Table 3.4: Summary of Water quality monitoring results
|
Monitoring Date |
Temp
(oC) |
pH |
Dissolved Oxygen (mg/L) |
DOS (%) |
Turbidity (NT) |
BOD (mg/L) |
Suspended Solids (mg/L) |
|
MP1 |
|
|
|
|
|
|
|
|
2/6/2010 |
24.6 |
7.2 |
2.1 |
24.9 |
44.9 |
4 |
52.5 |
|
4/6/2010 |
25.4 |
7.3 |
2.8 |
34.0 |
24.6 |
3 |
22 |
|
7/6/2010 |
26.3 |
7.4 |
3.3 |
40.1 |
14.2 |
8.5 |
16.5 |
|
9/6/2010 |
26.8 |
7.3 |
2.2 |
27.6 |
13.5 |
5 |
15.5 |
|
11/6/2010 |
27.3 |
7.4 |
1.7 |
20.7 |
25.2 |
6 |
41 |
|
15/6/2010 |
27.2 |
7.4 |
2.0 |
24.8 |
80.2 |
4 |
83 |
|
17/6/2010 |
28.6 |
7.5 |
2.1 |
26.5 |
60.0 |
3 |
72 |
|
19/6/2010 |
27.9 |
7.1 |
2.4 |
29.9 |
44.0 |
3 |
49.5 |
|
21/6/2010 |
29.1 |
7.6 |
4.6 |
60.7 |
38.7 |
9 |
38 |
|
23/6/2010 |
29.4 |
7.4 |
1.5 |
19.3 |
27.8 |
7 |
25 |
|
25/6/2010 |
29.3 |
7.5 |
2.4 |
31.4 |
51.9 |
4 |
17.5 |
|
28/6/2010 |
26.8 |
7.2 |
3.3 |
41.3 |
44.2 |
2.5 |
47 |
|
30/6/2010 |
27.9 |
7.5 |
4.4 |
55.7 |
35.9 |
3 |
28.5 |
|
Action Level |
- |
<5.5 or >7.5 |
<1.23 |
- |
>173 |
- |
>231 |
|
Limit
Level |
- |
<4.0 or >8.0 |
<1.17 |
- |
>177 |
- |
>299 |
|
|
|
|
|
|
|
|
|
|
MP2 |
|
|
|
|
|
|
|
|
2/6/2010 |
25.5 |
7.4 |
3.3 |
39.7 |
44.6 |
3 |
63 |
|
4/6/2010 |
25.8 |
7.4 |
3.9 |
47.2 |
19.9 |
2 |
26.5 |
|
7/6/2010 |
25.9 |
7.4 |
2.8 |
34.0 |
11.4 |
6 |
12 |
|
9/6/2010 |
26.1 |
7.3 |
3.2 |
39.8 |
18.1 |
4 |
26.5 |
|
11/6/2010 |
27.5 |
7.4 |
1.8 |
23.1 |
13.6 |
4 |
13.5 |
|
15/6/2010 |
27.2 |
7.3 |
2.5 |
31.6 |
55.4 |
3 |
67.5 |
|
17/6/2010 |
28.8 |
7.6 |
2.1 |
27.3 |
61.1 |
2 |
70.5 |
|
19/6/2010 |
27.6 |
7.5 |
5.0 |
63.5 |
20.3 |
2 |
23 |
|
21/6/2010 |
28.0 |
7.3 |
3.0 |
38.7 |
12.9 |
3 |
12.5 |
|
23/6/2010 |
29.0 |
7.4 |
1.5 |
20.1 |
28.2 |
7 |
26.5 |
|
25/6/2010 |
29.0 |
7.5 |
3.0 |
39.7 |
32.1 |
5 |
17.5 |
|
28/6/2010 |
27.1 |
7.1 |
3.1 |
39.1 |
25.8 |
2 |
19 |
|
30/6/2010 |
27.5 |
7.6 |
5.5 |
70.2 |
14.3 |
3 |
25 |
|
Action Level |
- |
<5.5 or >7.5 |
<1.04 |
- |
>132 |
- |
>170 |
|
Limit
Level |
- |
<4.0 or >8.0 |
<0.89 |
- |
>163 |
- |
>209 |
|
|
|
|
|
|
|
|
|
|
MP3 |
|
|
|
|
|
|
|
|
2/6/2010 |
23.4 |
7.8 |
5.7 |
67.8 |
81.8 |
11.5 |
95 |
|
4/6/2010 |
25.3 |
8.2 |
8.0 |
97.7 |
51.6 |
13.5 |
58.5 |
|
7/6/2010 |
27.8 |
8.6 |
8.7 |
111.3 |
122.5 |
18 |
123 |
|
9/6/2010 |
25.2 |
7.2 |
3.3 |
40.0 |
100.3 |
32 |
90.5 |
|
11/6/2010 |
29.3 |
8.9 |
9.5 |
124.3 |
18.7 |
9.5 |
23.5 |
|
15/6/2010 |
28.2 |
7.5 |
2.3 |
30.0 |
11.5 |
3 |
14.5 |
|
17/6/2010 |
29.6 |
7.6 |
2.5 |
32.2 |
8.6 |
<2 |
7 |
|
19/6/2010 |
29.2 |
7.3 |
2.9 |
38.0 |
8.6 |
2 |
6 |
|
21/6/2010 |
30.5 |
7.8 |
7.0 |
93.5 |
27.7 |
6 |
30 |
|
23/6/2010 |
29.5 |
7.6 |
4.8 |
63.3 |
41.6 |
7 |
40.5 |
|
25/6/2010 |
29.6 |
7.8 |
6.2 |
81.9 |
88.1 |
6 |
47.5 |
|
28/6/2010 |
27.3 |
7.5 |
5.4 |
69.3 |
53.2 |
4.5 |
46 |
|
30/6/2010 |
28.8 |
7.6 |
7.4 |
96.5 |
44.8 |
7 |
41.5 |
|
Action Level |
- |
<5.5 or >7.5 |
<6.85 |
- |
>64 |
- |
>65 |
|
Limit
Level |
- |
<4.0 or >8.0 |
<6.65 |
- |
>67 |
- |
>66 |
|
|
|
|
|
|
|
|
|
|
MP4 |
|
|
|
|
|
|
|
|
2/6/2010 |
23.8 |
6.9 |
1.2 |
13.8 |
31.5 |
3.5 |
22 |
|
4/6/2010 |
24.5 |
7.1 |
1.0 |
11.3 |
20.8 |
5.5 |
17 |
|
7/6/2010 |
25.6 |
7.2 |
1.0 |
12.1 |
23.8 |
7.5 |
16 |
|
9/6/2010 |
25.4 |
7.0 |
3.8 |
45.9 |
15.8 |
5 |
14 |
|
11/6/2010 |
28.3 |
7.5 |
2.1 |
26.6 |
19.5 |
3 |
16.5 |
|
15/6/2010 |
28.1 |
7.1 |
1.8 |
22.1 |
31.3 |
7 |
32.5 |
|
17/6/2010 |
29.1 |
7.3 |
1.1 |
14.4 |
23.2 |
4 |
14 |
|
19/6/2010 |
28.2 |
6.9 |
0.9 |
11.1 |
37.1 |
4 |
12 |
|
21/6/2010 |
29.0 |
6.9 |
0.7 |
8.7 |
47.2 |
3.5 |
29.5 |
|
23/6/2010 |
29.4 |
6.9 |
1.5 |
18.4 |
25.0 |
4 |
17.5 |
|
25/6/2010 |
28.8 |
7.0 |
0.5 |
7.4 |
20.1 |
6 |
13 |
|
28/6/2010 |
26.9 |
7.1 |
5.3 |
66.0 |
32.0 |
4.5 |
25.5 |
|
30/6/2010 |
28.6 |
7.0 |
0.6 |
7.9 |
106.5 |
4.5 |
98.5 |
|
Action Level |
- |
<5.5 or >7.5 |
<3.91 |
- |
>60 |
- |
>50 |
|
Limit
Level |
- |
<4.0 or >8.0 |
<3.82 |
- |
>64 |
- |
>53 |
|
|
|
|
|
|
|
|
|
|
MP5 |
|
|
|
|
|
|
|
|
2/6/2010 |
23.6 |
7.3 |
1.7 |
19.3 |
26.7 |
3 |
19.5 |
|
4/6/2010 |
25.0 |
7.3 |
2.3 |
26.9 |
39.9 |
3.5 |
26 |
|
7/6/2010 |
27.6 |
7.6 |
2.9 |
37.2 |
34.7 |
6.5 |
29.5 |
|
9/6/2010 |
25.9 |
7.3 |
4.2 |
52.2 |
25.2 |
4 |
26 |
|
11/6/2010 |
29.5 |
7.5 |
3.7 |
48.2 |
79.4 |
4.5 |
71.5 |
|
15/6/2010 |
28.3 |
7.3 |
1.4 |
17.8 |
90.1 |
11.5 |
99.5 |
|
17/6/2010 |
29.2 |
7.4 |
1.4 |
18.3 |
21.2 |
5.5 |
17.5 |
|
19/6/2010 |
29.2 |
7.3 |
3.0 |
38.9 |
43.3 |
6 |
34.5 |
|
21/6/2010 |
30.0 |
7.4 |
5.3 |
70.0 |
68.8 |
10.5 |
65 |
|
23/6/2010 |
30.0 |
7.2 |
1.3 |
16.4 |
25.8 |
7 |
23 |
|
25/6/2010 |
28.6 |
7.2 |
0.6 |
7.8 |
19.2 |
9 |
21 |
|
28/6/2010 |
27.0 |
6.9 |
1.6 |
20.0 |
35.7 |
5 |
19 |
|
30/6/2010 |
28.6 |
7.2 |
1.5 |
19.9 |
77.2 |
5 |
61.5 |
|
Action Level |
- |
<5.5 or >7.5 |
<4.13 |
- |
>81 |
- |
>66 |
|
Limit
Level |
- |
<4.0 or >8.0 |
<3.87 |
- |
>84 |
- |
>69 |
|
|
|
|
|
|
|
|
|
|
MP6 |
|
|
|
|
|
|
|
|
2/6/2010 |
23.7 |
7.5 |
2.5 |
29.9 |
45.6 |
4.5 |
39 |
|
4/6/2010 |
24.9 |
7.6 |
2.9 |
34.9 |
79.4 |
4 |
55 |
|
7/6/2010 |
27.3 |
7.8 |
3.5 |
43.0 |
98.2 |
8 |
75.5 |
|
9/6/2010 |
26.1 |
7.9 |
2.9 |
35.0 |
156.5 |
11.5 |
97.5 |
|
11/6/2010 |
28.5 |
7.4 |
4.3 |
54.8 |
41.1 |
3.5 |
32 |
|
15/6/2010 |
28.0 |
7.4 |
1.2 |
14.5 |
82.0 |
14 |
65 |
|
17/6/2010 |
30.2 |
7.7 |
4.0 |
53.4 |
32.6 |
3.5 |
24.5 |
|
19/6/2010 |
29.3 |
7.3 |
2.9 |
37.6 |
29.4 |
5 |
21.5 |
|
21/6/2010 |
30.6 |
7.4 |
4.2 |
55.6 |
65.3 |
5 |
51 |
|
23/6/2010 |
29.6 |
7.3 |
1.8 |
23.0 |
49.7 |
4 |
34 |
|
25/6/2010 |
28.6 |
7.5 |
1.8 |
22.1 |
107.0 |
9 |
64 |
|
28/6/2010 |
26.8 |
7.0 |
2.4 |
29.3 |
95.7 |
2.5 |
56 |
|
30/6/2010 |
29.9 |
7.3 |
2.1 |
28.1 |
68.6 |
2 |
40 |
|
Action Level |
- |
<5.5 or >7.5 |
<4.61 |
- |
>94 |
- |
>75 |
|
Limit
Level |
- |
<4.0 or >8.0 |
<4.52 |
- |
>96 |
- |
>75 |
Notes:
Values Bold indicate Action Level exceedance.
Values Underlined and Bold indicate
Limit Level exceedance.
Exceedances of pH, DO, turbidity and
SS were observed. For MP1 and MP2, there were slight exceedance of action level
for pH on 17 (MP2), 21 (MP1) and 30 (MP2) June 2010. For MP3, there were exceedances
of pH, DO, turbidity and SS (action and limit levels) on different monitoring
dates. At MP4, there were exceedances of limit level for turbidity on 30 June
2010. At MP5, pH was exceeded (Action Level) on 7 June 2010 while turbidity and SS were exceeded on 11 and 15 June 2010 (Limit Level for SS
on 11 June and Limit Level for turbidity and SS on 15 June 2010). The pH was
exceeded (Action Level) on 4, 7, 9, and 17 June 2010 at MP6 during the
monitoring period and there were exceedances of turbidity and SS on 7, 9, 25
and 28 June 2010 (Limit Level of turbidity and SS on 7 and 9 June; Limit Level
of turbidity on 25 June; and Action Level of turbidity on 28 June 2010). For
MP3, MP4, MP5, and MP6, the DO levels were exceeded on most of the monitoring
dates.
The Event and Action Plan in Appendix D was followed under these cases of exceedances.
From investigation, the Contractor
has implemented water quality mitigation measures as recommended in the EIA
report, including the provision of temporary drainage facility and associated
treatment facility. Sand bags are in place in the temporary drainage channel to
enhance the desilting efficiency. The Contractor further enhanced the water
quality mitigation measures by erecting several segments of rock bunds at the
discharge outlet to avoid site runoff draining directly to the northern
ditches.
Re-profiling earthworks were
observed at the adjacent fish ponds by the fish pond owner so the exceedances
at MP3 from 2 to 9 June 2010 were considered invalid. Exceedance of turbidity
at MP3 on 25 June 2010 was considered not due to construction works as no muddy
water discharge to the ponds was observed from the site during sampling
according to our monitoring team. The exceedance was likely to be caused by
localised factors rather than the project works.
The exceedance of SS and turbidity
at MP5 on 15 June 2010 were considered not due to construction works as the
location of MP6, which is close to the discharge outlet at the east of construction
site, both SS and turbidity level were less than MP5 (Turbidity and SS level at
MP6 were 82 NTU and 65 mg/L respectively). Similarly, the exceedance of
turbidity at MP4 on 30 June 2010 was considered not due to construction works
as for the location of MP6, both SS and turbidity level are less than MP4 (SS
and turbidity level at MP6 were 40 mg/L and 68.6 NTU respectively). Moreover,
as noted by monitoring team during on-site sampling, no direct muddy water
discharge was observed from the site. The exceedances were considered not due
to construction works. However, possible source of discharge which may give
rise to the exceedance was unknown.
For the exceedance of turbidity at
MP6 on 25 and 28 Jun 2010, the cause of exceedance could be related to the
algae growth. Since turbidity is to measure the degree of water for loosing its
transparency due to the presence of suspended particulates; from our recent
site observation, the colour of the ditches were observed in pale green and
algae growth was noted in the stream. The algae growth could reduce water
clarity and cause increase in turbidity level.
As such, the elevated turbidity could be caused by the recent growth of
organic particles which would affect water clarity. Moreover, for the main
source of construction runoff, the measured level of SS on both days were low (SS
level on 25 and 28 Jun 2010 is 64 mg/L and 56 mg/L respectively) without
triggering exceedance as wastewater treatment facilities were provided by
Contractor on site and are located near the discharge point to treat muddy
wastewater prior to discharge. As such, the exceedances were considered not due
to construction works.
DO and pH exceedance may be due to
the natural variation, as the temperature was higher when compared with
baseline monitoring period. The exceedances were considered not due to construction
works.
The Contractor was reminded to
implement the water quality mitigation measures in accordance with the
recommendation stated in Section 5.6.1 – 5.6.4 of the EIA Report as far as
practicable and regular spot check would be conducted on the nearby discharge
by Contractor and inform ET for investigation.
Construction phase ecological
monitoring commenced on 12 May 2010. This report documents surveys conducted in
the Survey Area between 1 June and 30 June 2010. Survey Area
is provided in Figure 4.1. Dates and ecological surveys conducted during this period are given in
Appendix H.
Monitoring was undertaken following
the survey methodology in the EM&A Manual. A transect was followed in the
bird surveys (see Figure 4.1). All bird species of conservation importance and/or wetland dependent
were identified and enumerated. Flying birds were not recorded unless they were
foraging and associated with the habitat (such as swifts). Further, notable
bird observations during other surveys were also recorded.
Bird surveys were conducted on a
weekly basis. A total of 15 bird species of conservation importance and/or
wetland-dependence were recorded using the ponds within 500 m of the Project
Site. A summary of survey data is provided in Appendix I.
Species and numbers recorded in this
survey period are typical of fish pond area during the summer months indicating
that birds in the area are not presently being adversely affected by the
construction.
One day time and one night time
herpetofauna survey was conducted. Two amphibian species (Günther’s Frog Rana guentheri and Ornate Pigmy Frog Microhyla ornata) and one reptile
species (Bowring's Gecko Hemidactylus
bowringii) were recorded. Both species are very common and widespread in
northwestern
Monitoring of dragonfly and
butterfly was conducted on a bi-monthly basis. A total of 9 dragonfly species
and 7 butterfly species were recorded. One dragonfly species (Coastal Glider Macrodiplax cora) that is considered to
be uncommon and of Local Concern in Hong Kong was recorded in a high number
during the surveys; while several individuals of Scarlet Basker (Urothemis signata), also listed of Local
Concern, were recorded on one survey. All butterflies recorded were common and
widespread species recorded in low to very low numbers. A summary of the survey
findings are provided in Appendix J.
Monitoring of mammal was conducted
concurrently with other surveys. No mammals were recorded in the survey period.
Ecological monitoring were carried
out following the survey methodology and frequency outlined in the EM&A
Manual (March 2008) in June 2010.
A total of 15 bird species, 2
amphibian species, 1 reptile species, 9 dragonfly species and 7 butterfly
species were recorded. Survey findings indicate that the ponds within the
Survey Area supported numbers and diversity of wetland-dependent birds and
other species of conservation importance typical of fish pond areas in the
early summer months.
The EM&A programme for
Landscape and Visual impact due to the construction commenced in May 2010 and
was continued during the reporting period. Site inspections were carried out on
9 and 23 June 2010 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 works area was confined by site hoardings and noise
barriers at the site boundaries. No works exceeded the site boundaries was
observed. |
|
Protection of
all trees and woodland blocks to be retained |
An area of reedbed was preserved and confined with fencing
on site as nursery for the replanting to future wetland restoration area.
Trees retained and transplanted were fenced off by site hoardings and noise
barriers. |
|
Streams |
Mitigation measures including gravels deposit and barrier
installation at the temporary drainage channel to filter and intercept site
runoff, provision of sedimentation tanks and aqua sed to provide primary
treatment of the discharge. |
|
Clearance of
existing vegetation |
Site clearance was completed prior to the commencement of
construction. An area of reedbed was preserved and confined with fencing on
site. |
|
Transplanting
of trees |
Trees transplanting was completed with strip planting along
the southern site boundary. |
|
Topsoil
stripping |
Topsoil and marine sediment to be reused on site were
stockpiled on site with taupaulin sheet covered or compacted and keep moist
to minimize dust generation. |
|
New buildings |
Not relevant |
|
Boundaries |
Hoardings were erected as required |
|
Noise Barrier |
Noise barriers design accords with the mitigation proposals
with upper 7 or 6 m portion in translucent material with green tinted to match
with the environment. All noise barriers were constructed at locations
according to the mitigation proposals. |
|
Night-time
lighting |
No night-time works were carried out during the monitoring
period. |
|
Plant supply |
The advance strip plantings were supplied by landscape
contractor and the planting period is in appropriate season to facilitate the
establishment of the plants. Some new trees planted along the site boundary
were observed dead, as a result of the shading effect from the tree crown spreaded
from the adjacent developments over the site. Dead trees were either replaced
or replanted with shrubs that tolerate to shading. The shading effect by the
trees from adjacent development will be continued monitor. The planting
strategy and maintenance of strip planting has to review for long term
management of the trees. |
|
Landscape and
wetland treatments generally |
The wetland restoration area is under construction. |
|
Soiling,
planting, etc. |
The strip planting with compensatory and transplanted trees
has not been hand over for maintenance, the planting works are under
supervision on-site to ensure meeting the requirement in the approved
planting proposal. |
|
Establishment
Works |
The strip planting has not been hand over. Monitoring will
be carried out in next phase. |
The ET had carried out construction
phase weekly site inspections on 3, 9, 18, 23 and 30 June 2010. 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) |
|
Water ponding in the
site |
To clear stagnant water
frequently |
Agreed and on-going
during the wet season |
- |
|
Chemical bottles were placed
on the ground at the wastewater treatment facility. |
To provide drip trays
to avoid land contamination |
Agreed and action taken |
9 Jun 2010 |
|
Dusty haul road |
To provide watering to
the haul road to suppress dust emission |
Agreed and action taken |
9 Jun 2010 |
|
Oil stain was observed
in a small section of the drainage channel. The oil was suspected to have
leaked from machinery |
To use oil absorbent to
clear the oil inside the channel and prevent oil leakage from machines |
Agreed and action taken |
18 Jun 2010 |
|
Dark smoke was observed
at an excavator |
To stop its operation
and provide maintenance |
Agreed and action taken |
23 Jun 2010 |
|
Stockpiles in the site |
To either cover with tarpaulin
and/or lower the stockpiles and provide compaction/watering |
Agreed and action taken |
23 Jun 2010 |
|
Unused temporary
drainage |
To backfill unused
temporary drainage |
Agreed and on-going |
- |
|
Dust at the haul road
inside the works area |
To provide sufficient
watering to suppress dust |
Agreed and on-going |
- |
|
Settled sand and silt
was observed inside the main temporary drainage channel |
To clear the settled
sand and silt frequently |
Agreed and action taken |
8 Jul 2010 |
|
Stagnant water inside
containers |
To clear all stagnant
water inside containers |
Agreed and action taken |
30 Jun 2010 |
|
One AquaSed unit
stopped operation and required maintenance |
To repair the AquaSed
as soon as possible |
|
8 Jul 2010 |
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, 256.5 tonnes of
C&D material were generated on site and disposed off at Public Fill
Reception Facilities at Tuen Mun Area 38 during the period. No metals was
generated and collected by registered recycling collector. No paper cardboard
packing and plastic were generated on site and collected by registered
recycling collector. No chemical waste was generated and collected by licensed
chemical waste collector. 5.7 tonnes of other types of wastes (e.g.
general refuse) was generated on site and disposed of at North East New
Territories (NENT) Landfill.
The Contractor is advised to maintain on
site waste sorting and recording system and maximize reuse/recycling of C&D
wastes.
The environmental permits, licenses, and/or
notifications on environmental protection for this Project which were valid
during the period is summarised in Table
6.2.
Table 6.2: Status of Environmental Submissions, Licenses and Permits
|
Statutory Reference |
Description |
Permit
/Reference No. |
Status |
|
EIAO |
Environmental Permit |
EP-311/2008A |
Valid |
|
APCO |
Notification of
Construction Work under APCO |
316688 (27
Apr 2010) |
Valid |
|
WPCO |
Discharge
License |
(Application
no.: 313815) |
Under
Application (Submitted
on 22 Jan 2010) |
|
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 K. In particular, the following
mitigation measures were brought to attention during the site audits:
Air Quality
·
All
stockpiles should be
covered by tarpaulin or kept wet by water spraying;
·
All
vehicles should be washed to remove any dusty materials before leaving the
construction sites;
·
the
portion of road leading the construction site that is within
·
Sufficient water spraying should be provided at haul
road to reduce dust emission; and
·
Ensure proper functioning of the wheel wash facility.
Noise
·
Mobile
plant should be sited
as far away from NSRs as possible;
·
Plant
known to emit noise strongly in one direction should be orientated to direct
noise away from the NSRs; and
·
The construction activities should be better scheduled to reduce noise nuisance.
Water Quality
·
Water accumulated in the site (including water inside
drip trays) should be cleared frequently;
·
Ensure
proper functioning of the wastewater
treatment facility;
·
Silt and debris should be removed from the temporary
drainage channel regularly; and
·
Any soil contaminated with chemicals/oils shall be
removed from site and the void created shall be filled with suitable materials.
Waste management
·
Reuse the excavated materials as far as practical to
reduce the amount of waste disposal;
·
Ensure drip trays are provided for chemical containers
to prevent leakage or soil contamination;
·
All
plants and vehicles should be properly maintained to prevent oil leakage;
·
Oil
stains on soil should be cleared by disposal of contaminated soil; and
·
Ventilation
should be provided for the Chemical Store Room.
There is no breach of Action or Limit Levels for Air Quality and Noise monitoring in the reporting month.
Exceedances of Action and Limit Levels were recorded for Water Quality at MP1, MP2, MP3, MP4, MP5 and MP6 on different monitoring dates.
Exceedances of pH, DO, turbidity and SS were observed. For MP1 and MP2, there were slight exceedance of action level for pH on 17 (MP2), 21 (MP1) and 30 (MP2) June 2010. For MP3, there were exceedances of pH, DO, turbidity and SS (action and limit levels) on different monitoring dates. At MP4, there were exceedances of limit level for turbidity on 30 June 2010. At MP5, pH was exceeded (Action Level) on 7 June 2010 while turbidity and SS were exceeded on 11 and 15 June 2010 (Limit Level for SS on 11 June and Limit Level for turbidity and SS on 15 June 2010). The pH was exceeded (Action Level) on 4, 7, 9, and 17 June 2010 at MP6 during the monitoring period and there were exceedances of turbidity and SS on 7, 9, 25 and 28 June 2010 (Limit Level of turbidity and SS on 7 and 9 June; Limit Level of turbidity on 25 June; and Action Level of turbidity on 28 June 2010). For MP3, MP4, MP5, and MP6, the DO levels were exceeded on most of the monitoring dates.
Table 7.1: Summary of exceedances in Water Quality
|
Monitoring Date |
pH |
Dissolved Oxygen (mg/L) |
Turbidity (NT) |
Suspended Solids (mg/L) |
|
MP1 |
|
|
|
|
|
21/6/2010 |
7.6 |
4.6 |
38.7 |
38 |
|
Action Level |
<5.5 or >7.5 |
<1.23 |
>173 |
>231 |
|
Limit
Level |
<4.0 or >8.0 |
<1.17 |
>177 |
>299 |
|
|
|
|
|
|
|
MP2 |
|
|
|
|
|
17/6/2010 |
7.6 |
2.1 |
61.1 |
70.5 |
|
30/6/2010 |
7.6 |
5.5 |
14.3 |
25 |
|
Action Level |
<5.5 or >7.5 |
<1.04 |
>132 |
>170 |
|
Limit
Level |
<4.0 or >8.0 |
<0.89 |
>163 |
>209 |
|
|
|
|
|
|
|
MP3 |
|
|
|
|
|
2/6/2010 |
7.8 |
5.7 |
81.8 |
95 |
|
4/6/2010 |
8.2 |
8.0 |
51.6 |
58.5 |
|
7/6/2010 |
8.6 |
8.7 |
122.5 |
123 |
|
9/6/2010 |
7.2 |
3.3 |
100.3 |
90.5 |
|
11/6/2010 |
8.9 |
9.5 |
18.7 |
23.5 |
|
15/6/2010 |
7.5 |
2.3 |
11.5 |
14.5 |
|
17/6/2010 |
7.6 |
2.5 |
8.6 |
7 |
|
19/6/2010 |
7.3 |
2.9 |
8.6 |
6 |
|
21/6/2010 |
7.8 |
7.0 |
27.7 |
30 |
|
23/6/2010 |
7.6 |
4.8 |
41.6 |
40.5 |
|
25/6/2010 |
7.8 |
6.2 |
88.1 |
47.5 |
|
28/6/2010 |
7.5 |
5.4 |
53.2 |
46 |
|
30/6/2010 |
7.6 |
7.4 |
44.8 |
41.5 |
|
Action Level |
<5.5 or >7.5 |
<6.85 |
>64 |
>65 |
|
Limit
Level |
<4.0 or >8.0 |
<6.65 |
>67 |
>66 |
|
|
|
|
|
|
|
MP4 |
|
|
|
|
|
2/6/2010 |
6.9 |
1.2 |
31.5 |
22 |
|
4/6/2010 |
7.1 |
1.0 |
20.8 |
17 |
|
7/6/2010 |
7.2 |
1.0 |
23.8 |
16 |
|
9/6/2010 |
7.0 |
3.8 |
15.8 |
14 |
|
11/6/2010 |
7.5 |
2.1 |
19.5 |
16.5 |
|
15/6/2010 |
7.1 |
1.8 |
31.3 |
32.5 |
|
17/6/2010 |
7.3 |
1.1 |
23.2 |
14 |
|
19/6/2010 |
6.9 |
0.9 |
37.1 |
12 |
|
21/6/2010 |
6.9 |
0.7 |
47.2 |
29.5 |
|
23/6/2010 |
6.9 |
1.5 |
25.0 |
17.5 |
|
25/6/2010 |
7.0 |
0.5 |
20.1 |
13 |
|
30/6/2010 |
7.0 |
0.6 |
106.5 |
98.5 |
|
Action Level |
<5.5 or >7.5 |
<3.91 |
>60 |
>50 |
|
Limit
Level |
<4.0 or >8.0 |
<3.82 |
>64 |
>53 |
|
|
|
|
|
|
|
MP5 |
|
|
|
|
|
2/6/2010 |
7.3 |
1.7 |
26.7 |
19.5 |
|
4/6/2010 |
7.3 |
2.3 |
39.9 |
26 |
|
7/6/2010 |
7.6 |
2.9 |
34.7 |
29.5 |
|
11/6/2010 |
7.5 |
3.7 |
79.4 |
71.5 |
|
15/6/2010 |
7.3 |
1.4 |
90.1 |
99.5 |
|
17/6/2010 |
7.4 |
1.4 |
21.2 |
17.5 |
|
19/6/2010 |
7.3 |
3.0 |
43.3 |
34.5 |
|
23/6/2010 |
7.2 |
1.3 |
25.8 |
23 |
|
25/6/2010 |
7.2 |
0.6 |
19.2 |
21 |
|
28/6/2010 |
6.9 |
1.6 |
35.7 |
19 |
|
30/6/2010 |
7.2 |
1.5 |
77.2 |
61.5 |
|
Action Level |
<5.5 or >7.5 |
<4.13 |
>81 |
>66 |
|
Limit
Level |
<4.0 or >8.0 |
<3.87 |
>84 |
>69 |
|
|
|
|
|
|
|
MP6 |
|
|
|
|
|
2/6/2010 |
7.5 |
2.5 |
45.6 |
39 |
|
4/6/2010 |
7.6 |
2.9 |
79.4 |
55 |
|
7/6/2010 |
7.8 |
3.5 |
98.2 |
75.5 |
|
9/6/2010 |
7.9 |
2.9 |
156.5 |
97.5 |
|
11/6/2010 |
7.4 |
4.3 |
41.1 |
32 |
|
15/6/2010 |
7.4 |
1.2 |
82.0 |
65 |
|
17/6/2010 |
7.7 |
4.0 |
32.6 |
24.5 |
|
19/6/2010 |
7.3 |
2.9 |
29.4 |
21.5 |
|
21/6/2010 |
7.4 |
4.2 |
65.3 |
51 |
|
23/6/2010 |
7.3 |
1.8 |
49.7 |
34 |
|
25/6/2010 |
7.5 |
1.8 |
107.0 |
64 |
|
28/6/2010 |
7.0 |
2.4 |
95.7 |
56 |
|
30/6/2010 |
7.3 |
2.1 |
68.6 |
40 |
|
Action Level |
<5.5 or >7.5 |
<4.61 |
>94 |
>75 |
|
Limit
Level |
<4.0 or >8.0 |
<4.52 |
>96 |
>75 |
Notes:
Values Bold indicate Action Level exceedance.
Values Underlined and Bold indicate
Limit Level exceedance.
No environmental complaint was received this month.
No notifications of summons or successful prosecution were received this month.
Investigations have been carried out to
identify the causes of exceedance. The investigation reports for the
exceedances happened during the reporting period have been sent to the IEC for
review. Currently the investigation report for exceedances from 23 to 30 June
2010 is under review and revision by ET.
From investigation, construction activities
during the period of exceedance included mainly site clearance, site formation,
and drainage work. It was observed that the Contractor has implemented water
quality mitigation measures as recommended in the EIA report, including the
provision of temporary drainage facility and associated treatment facility.
Sand bags are in place in the temporary drainage channel to enhance the
desilting efficiency. The Contractor further enhanced the water quality
mitigation measures by erecting several segments of rock bunds at the discharge
outlet to avoid site runoff draining directly to the northern ditches.
With external factors affect the adjacent environments, such as the re-profiling works carried out at the fish ponds and natural variations, the exceedances were considered not due to construction works.
As non-compliances have been recorded, the
Event and Action Plan has been followed. Although it is considered that the
exceedances were not related to the Project, the Contractor was reminded to implement
the water quality mitigation measures in accordance with the recommendation
stated in Section 5.6.1 – 5.6.4 of the EIA Report as far as practicable and
regular spot check would be conducted on the nearby discharge by Contractor and
inform ET for investigation.
As wet weather has come, to cater for the
increase of site runoff, the Contractor would further enhance the water quality
mitigation measures by erecting several segments of rock bunds at the discharge
outlet to avoid site runoff draining directly to the northern ditches.
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
(Jun 2010) |
0 |
0 |
0 |
|
From 12 May 2010 to end
of the reporting month (Jun 2010) |
0 |
0 |
0 |
The major site works to be commissioned in the coming month include:
ˇ
Site formation and drainage work for
Wetland Restoration Area (WRA);
ˇ
Installation of Band Drain; and
ˇ
Trial Embankment for Ground Improvement
Key issues to be considered in the coming month include:
ˇ
Generation of dust from activities on-site (esp. for Trial
Embankment);
ˇ
Noise impact from operating equipment and machinery on-site;
ˇ
Generation of site surface runoffs and wastewater from activities
on-site;
ˇ
Sorting, recycling, storage and disposal of general refuse and
construction waste from activities on-site; and
ˇ
Management of chemicals and avoidance of oil spillage on-site.
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 July 2010 is shown in the Table 8.1.
Table 8.1: Tentative
Environmental Monitoring and Audit Schedule for July 2010

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.
Action and Limit Level exceedances of pH, DO, turbidity and SS were
recorded at water quality monitoring stations including MP1, MP2, MP3, MP4, MP5
and MP6. However, Investigations on the exceedance showed that the exceedances
were not related to the Project and may have been due to external factors such
as the re-profiling works in the fish ponds and natural variations.
With
considerations on the construction activities and environment, the following
recommendations were provided:
Air Quality
·
All
stockpiles should be covered by tarpaulin or kept wet by water spraying;
·
All
vehicles should be washed to remove any dusty materials before leaving the
construction sites;
·
the
portion of road leading the construction site that is within
·
Sufficient
water spraying should be provided at haul road to reduce dust emission; and
·
Ensure
proper functioning of the wheel wash facility.
Noise
·
Mobile
plant should be sited as far away from NSRs as possible;
·
Plant
known to emit noise strongly in one direction should be orientated to direct
noise away from the NSRs; and
·
The
construction activities should be better scheduled to reduce noise nuisance.
Water Quality
·
Water
accumulated in the site (including water inside drip trays) should be cleared
frequently;
·
Ensure
proper functioning of the wastewater treatment facility;
·
Silt
and debris should be removed from the temporary drainage channel regularly; and
·
Any
soil contaminated with chemicals/oils shall be removed from site and the void
created shall be filled with suitable materials.
Waste management
·
Reuse
the excavated materials as far as practical to reduce the amount of waste
disposal;
·
Ensure
drip trays are provided for chemical containers to prevent leakage or soil
contamination;
·
All plants
and vehicles should be properly maintained to prevent oil leakage;
·
Oil
stains on soil should be cleared by disposal of contaminated soil;
·
Ventilation
should be provided for the Chemical Store Room.
Contact information:
|
Company |
Position |
Name |
Telephone / |
|
Heng Shung Construction Co. Ltd. (The
Contractor) |
Assistant
Construction Manager |
Ms Lynne Hung |
2908 2391 |
|
Heng Shung Construction Co. Ltd. (The
Contractor) |
Site Agent |
Mr Poon Man Ho |
9426 3533 |
|
Heng Shung Construction Co. Ltd. (The
Contractor) |
Environmental
Officer |
Mr. Lun Ho Yin |
9866 7497 |
|
ENVIRON Hong
Kong Ltd (IEC) |
Independent
Environmental Checker |
Mr David Yeung |
3743 0788 |
|
Mott MacDonald Hong Kong Ltd. (ET) |
ET Team Leader |
Ms Florence
Yuen |
2828 5768 |
Appendix C.
Action and Limit Levels for Construction Phase
|
Air Quality
Action and Limit Levels for 24-hour TSP
|
Monitoring Station |
Action Level (mg/m3) |
Limit Level (mg/m3) |
|
ASR1 |
226 |
260 |
|
ASR2A |
213 |
260 |
|
ASR3 |
205 |
260 |
|
ASR4 |
237 |
260 |
Action and Limit Levels for 1-hour TSP
|
Monitoring Station |
Action Level (mg/m3) |
Limit Level (mg/m3) |
|
ASR1 |
378 |
500 |
|
ASR2A |
357 |
500 |
|
ASR3 |
358 |
500 |
|
ASR4 |
372 |
500 |
Noise
Action and Limit Levels for
Construction Noise
|
Time Period |
Action Level |
Limit Level |
|
NSR1, NSR3, NSR5, NSR7 |
||
|
0700 – 1900 hours
on normal weekdays |
When one
documented complaint is received from any one of the sensitive receivers |
75 dB(A) |
Water Quality
Action and Limit Levels
for Water Quality
|
Parameters |
DO in mg/L |
Turbidity in NTU |
SS in mg/L |
pH |
||||
|
|
Action Level |
Limit Level |
Action Level |
Action Level |
Action Level |
Limit Level |
Action Level |
Limit Level |
|
MP1 |
1.23 |
1.17 |
173 |
177 |
231 |
299 |
< 5.5 or > 7.5 |
< 4.0 or > 8.0 |
|
MP2 |
1.04 |
0.89 |
132 |
163 |
170 |
209 |
||
|
MP3 |
6.85 |
6.65 |
64 |
67 |
65 |
66 |
||
|
MP4 |
3.91 |
3.82 |
60 |
64 |
50 |
53 |
||
|
MP5 |
4.13 |
3.87 |
81 |
84 |
66 |
69 |
||
|
MP6 |
4.61 |
4.52 |
94 |
96 |
75 |
75 |
||
Appendix D.
Event and Action Plan for Air Quality, Noise,
Water Quality, Ecology and Landscape & Visual
|
Air Quality
|
Event |
Action |
|||
|
ET Leader |
IEC |
ER |
Contractor |
|
|
Action Level |
|
|
|
|
|
1.
Exceedance for one sample |
1.
Identify source, investigate the causes
of exceedance and propose remedial measures. 2.
Inform IEC and ER. 3.
Repeat measurement to confirm finding. 4.
Increase monitoring frequency to daily. |
1.
Check monitoring data submitted by ET. 2.
Check Contractor’s working method. |
1.
Notify Contractor. |
1.
Rectify any unacceptable practice. 2.
Amend working methods if appropriate. |
|
2.
Exceedance for two or more consecutive samples |
1.
Identify the source. 2.
Inform
IEC and ER. 3.
Advise ER
on the effectiveness of the proposed remedial measures 4.
Repeat measurements to confirm findings. 5.
Increase monitoring frequency to daily. 6.
Discuss with IEC and the Contractor on
remedial actions required. 7.
If exceedance continues, arrange meeting with
IEC and ER. 8.
If exceedance stops, cease additional
monitoring. |
1.
Check monitoring data submitted by ET. 2.
Check the Contractor’s working method. 3.
Discuss with ET Leader and the Contractor on
possible remedial measures. 4.
Advise ER on the effectiveness of the proposed
remedial measures. 5.
Supervise implementation of remedial measures. |
1.
Confirm receipt of notification of exceedance
in writing. 2.
Notify the Contractor. 3.
Ensure remedial measures properly implemented. |
1.
Submit proposals for remedial actions to IEC
within 3 working days of notification. 2.
Implement the agreed proposals. 3.
Amend proposal if appropriate. |
|
Limit Level |
|
|
|
|
|
1.
Exceedance for one sample |
1.
Identify source, investigate the causes of
exceedance and propose remedial measures. 2.
Inform ER and EPD. 3.
Repeat measurement to confirm finding. 4.
Increase monitoring frequency to daily. 5.
Assess effectiveness of Contractor’s remedial
actions and keep IEC, EPD and ER informed of the results. |
1.
Check monitoring data submitted by ET. 2.
Check the Contractor’s working method. 3.
Discuss with ET Leader and the Contractor on
possible remedial measures. 4.
Advise ER on the effectiveness of the proposed
remedial measures. 5.
Supervise implementation of remedial measures. |
1.
Confirm receipt of notification of exceedance
in writing. 2.
Notify the Contractor. 3.
Ensure remedial measures properly implemented. |
1.
Take immediate action to avoid further
exceedance. 2.
Submit proposals for remedial actions to IEC
within 3 working days of notification. 3.
Implement the agreed proposals. 4.
Amend proposal if appropriate. |
|
2.
Exceedance for two or more consecutive samples |
1.
Notify IEC, ER, EPD and the Contractor. 2.
Identify the source. 3.
Repeat measurements to confirm findings. 4.
Increase monitoring frequency to daily. 5.
Carry out analysis of the Contractor’s working
procedures to determine possible mitigation to be implemented. 6.
Arrange meeting IEC and ER to discuss the
remedial actions to be taken. 7.
Assess effectiveness of the Contractor’s
remedial actions and keep IEC, EPD and ER informed of the results. 8.
If exceedance stops, cease additional
monitoring. |
1.
Discuss amongst ER, ET Leader and the
Contractor on the potential remedial actions. 2.
Review the Contractor’s remedial actions
whenever necessary and advise ER accordingly. 3.
Supervise the implementation of remedial
measures. |
1.
Confirm receipt of notification of exceedance
in writing. 2.
Notify the Contractor. 3.
In consultation with IEC, agree with the
remedial measures to be implemented. 4.
Ensure remedial measures are properly implemented. 5.
If exceedance continues, consider what
activity of the work is responsible and instruct the Contractor to stop that
activity of work until the exceedance is abated. |
1.
Take immediate action to avoid further
exceedance. 2.
Submit proposals for remedial actions to IEC
within 3 working days of notification. 3.
Implement the agreed proposals. 4.
Resubmit proposals if problem still not under
control. 5.
Stop the relevant activity of works as
determined by ER until the exceedance is abated. |
Construction Noise
|
Event |
Action |
|||
|
ET Leader |
IEC |
ER |
Contractor |
|
|
Action Level |
1. Notify IEC and the Contractor. 2. Carry out investigation. 3. Report the results of investigation to IEC and the Contractor. 4. Discuss with the Contractor and formulate remedial measures. 5. Increase monitoring frequency to check mitigation measures. |
1. Review with analysed results submitted by ET. 2. Review the proposed remedial measures by the Contractor and advise ER
accordingly. 3. Supervise the implement of remedial measures. |
1. Confirm receipt of notification of exceedance in writing. 2. Notify the Contractor. 3. Require the Contractor to propose remedial measures for the analysed
noise problem. 4. Ensure remedial measures are properly implemented. |
1. Submit noise mitigation proposals to IEC. 2. Implement noise mitigation proposals. |
|
Limit Level |
1. Identify the source. 2. Notify IEC, ER, EPD and the Contractor. 3. Repeat measurement to confirm findings. 4. Increase monitoring frequency. 5. Carry out analysis of Contractor’s working procedures to determine
possible mitigation to be implemented. 6. Inform IEC, ER, and EPD the causes & actions taken for the
exceedances. 7. Assess effectiveness of the Contractor’s remedial actions and keep
IEC, EPD and ER informed of the results. 8. If exceedance stops, cease additional monitoring. |
1. Discuss amongst ER, ET Leader and the Contractor on the potential
remedial actions. 2. Review the Contractor’s remedial actions whenever necessary to assure their
effectiveness and advise ER accordingly. 3. Supervise the implementation of remedial measures. |
1. Confirm receipt of notification of exceedance in writing. 2. Notify the Contractor. 3. Require the Contractor to propose remedial measures for the analysed
noise problem. 4. Ensure remedial measures are properly implemented. 5. If exceedance continues, consider what activity of the work is
responsible and instruct the Contractor to stop that activity of work until
the exceedance is abated. |
1. Take immediate action to avoid further exceedance. 2. Submit proposals for remedial actions to IEC within 3 working days of
notification. 3. Implement the agreed proposals. 4. Resubmit proposals if problem still not under control. 5. Stop the relevant activity of works as determined by the ER until the
exceedance is abated. |
Water Quality
|
Event |
Action |
|||
|
ET Leader |
IEC |
ER |
Contractor |
|
|
Action Level |
|
|
|
|
|
1. Exceedance for one sample |
1. Repeat in-situ measurement to confirm
finding; 2. Identify source(s) of impact; 3. Inform IEC and Contractor; 4. Check monitoring data, all plant, equipment
and Contractor’s working methods; 5. Discuss mitigation measures with IEC and
Contractor; and 6. Repeat measurement on next day of
exceedance. |
1. Discuss with ET and Contractor on the
mitigation measures; 2. Review proposals on mitigation measures
submitted by Contractor and advise the ER accordingly; and 3. Assess the effectiveness of the implemented
mitigation measures. |
1. Discuss with IEC on the proposed mitigation
measures; and 2. Make agreement on the mitigation measures
to be implemented. |
1. Inform the ER and confirm notification of
the non-compliance in writing; 2. Rectify unacceptable practice; 3. Check all plant and equipment; 4. Consider changes of working methods; 5. Discuss with ET and IEC and propose
mitigation measures to IEC and ER; and 6. Implement the agreed mitigation measures. |
|
2. Exceedance for two or more consecutive samples |
1. Repeat in-situ measurement to confirm finding; 2. Identify source(s) of impact; 3. Inform IEC and Contractor; 4. Check monitoring data, all plant, equipment
and Contractor’s working methods; 5. Discuss mitigation measures with IEC and
Contractor; 6. Ensure mitigation measures are implemented; 7. Prepare to increase the monitoring
frequency to daily; and 8. Repeat measurement on next day of
exceedance. |
1. Discuss with ET and Contractor on the
mitigation measures; 2. Review proposals on mitigation measures submitted
by Contractor and advise the ER accordingly; and 3. Assess the effectiveness of the implemented
mitigation measures. |
1. Discuss with IEC on the proposed mitigation
measures; 2. Make agreement on the mitigation measures
to be implemented; and 3. Assess the effectiveness of the implemented
mitigation measures. |
1. Inform the Engineer and confirm
notification of the non-compliance in writing; 2. Rectify unacceptable practice; 3. Check all plant and equipment; 4. Consider changes of working methods; 5. Discuss with ET and IEC and propose
mitigation measures to IEC and ER within 3 working days; and 6. Implement the agreed mitigation measures. |
|
Limit Level |
|
|
|
|
|
1. Exceedance for one sample |
1. Repeat in-situ measurement to confirm finding; 2. Identify source(s) of impact; 3. Inform IEC, Contractor and EPD; 4. Check monitoring data, all plant, equipment
and Contractor’s working methods; 5. Discuss mitigation measures with IEC, ER
and Contractor; 6. Ensure mitigation measures are implemented;
and 7. Increase the monitoring frequency to daily
until no exceedance of Limit level. |
1. Discuss with ET and Contractor on the
mitigation measures; 2. Review proposals on mitigation measures
submitted by Contractor and advise the ER accordingly; and 3. Assess the effectiveness of the implemented
mitigation measures. |
1. Discuss with IEC, ET and Contractor on the
proposed mitigation measures; and 2. Request Contractor to critically review the
working methods; 3. Make agreement on the mitigation measures
to be implemented; and 4. Assess the effectiveness of the implemented
mitigation measures. |
1. Inform the Engineer and confirm
notification of the non-compliance in writing; 2. Rectify unacceptable practice; 3. Check all plant and equipment; 4. Consider changes of working methods; 5. Discuss with ET and IEC and ER and propose
mitigation measures to IEC and ER within 3 working days; and 6. Implement the agreed mitigation measures. |
|
2. Exceedance for two or more consecutive samples |
1. Repeat in-situ measurement to confirm
finding; 2. Identify source(s) of impact; 3. Inform IEC, Contractor and EPD; 4. Check monitoring data, all plant, equipment
and Contractor’s working methods; 5. Discuss mitigation measures with IEC, ER
and Contractor; 6. Ensure mitigation measures are implemented;
and 7. Increase the monitoring frequency to daily
until no exceedance of Limit level for two consecutive days. |
1. Discuss with ET and Contractor on the mitigation
measures; 2. Review proposals on mitigation measures
submitted by Contractor and advise the ER accordingly; and 3. Assess the effectiveness of the implemented
mitigation measures. |
1. Discuss with IEC, ET and Contractor on the proposed
mitigation measures; and 2. Request Contractor to critically review the
working methods; 3. Make agreement on the mitigation measures
to be implemented; 4. Assess the effectiveness of the implemented
mitigation measures; and 5. Consider and instruct, if necessary, the
Contractor to slow down or to stop all or part of the marine work until no
exceedance of Limit Level. |
1. Inform the ER and confirm notification of
the non-compliance in writing; 2. Rectify unacceptable practice; 3. Check all plant and equipment; 4. Consider changes of working methods; 5. Discuss with ET and IEC and ER and propose
mitigation measures to IEC and ER within 3 working days; 6. Implement the agreed mitigation measures;
and 7. As directed by the Engineer, to slow down
or to stop all or part of the marine work or construction activities. |
Appendix E.
Calibration certificates
|
Appendix F.
Graphical plots of the monitoring
results
|
Appendix G.
Weather conditions
during the monitoring period
|
Appendix H.
Ecological Monitoring conducted in June 2010
|
|
June 2010 |
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
10 |
11 |
12 |
13 |
14 |
15 |
|
Mammals |
ü |
|
|
ü |
|
|
|
ü |
ü |
|
|
|
|
ü |
ü |
|
Birds |
ü |
|
|
|
|
|
|
ü |
|
|
|
|
|
ü |
|
|
Herpetofauna |
|
|
|
ü |
|
|
|
|
ü |
|
|
|
|
|
|
|
Dragonflies
& butterflies |
|
|
|
ü |
|
|
|
|
|
|
|
|
|
|
ü |
|
Inspection
Visits |
ü |
|
|
|
|
|
|
ü |
|
|
|
|
|
ü |
|
|
June 2010 |
16 |
17 |
18 |
19 |
20 |
21 |
22 |
23 |
24 |
25 |
26 |
27 |
28 |
29 |
30 |
|
Mammals |
|
|
|
|
|
ü |
|
|
|
|
|
|
|
|
|
|
Birds |
|
|
|
|
|
ü |
|
|
|
|
|
|
|
|
|
|
Herpetofauna |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Dragonflies
& butterflies |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Inspection
Visits |
|
|
ü |
|
|
ü |
|
ü |
|
ü |
|
|
|
|
|
*
Light grey cells indicated public holidays or Sundays.
Appendix I.
Summary of Bird Surveys conducted in June 2010
|
|
|
Conservation Status (2) |
June |
||
|
Species Name |
Scientific Name |
Survey (3) |
Mean (4) |
|
|
Little Grebe |
Tachybaptus ruficollis |
LC, (1) |
4 |
11.75 |
|
Great Egret |
Egretta alba |
PRC, (1) |
4 |
30.50 |
|
Little
Egret |
Egretta garzetta |
PRC, (1) |
4 |
56.25 |
|
Cattle
Egret |
Bubulcus ibis |
(LC), (1) |
2 |
0.50 |
|
Chinese
Pond Heron |
Ardeola bacchus |
PRC, (1) |
4 |
25.00 |
|
Black-crowned Night Heron |
Nycticorax nycticorax |
LC, (1) |
4 |
10.75 |
|
Yellow Bittern |
Ixobrychus sinensis |
(LC)
(1) |
1 |
0.25 |
|
White-breasted Waterhen |
Amaurornis phoenicurus |
(1) |
4 |
5.75 |
|
Little Ringed Plover |
Charadrius dubius |
LC, (1) |
4 |
10.75 |
|
Common Greenshank |
Tringa nebularia |
RC, (1) |
4 |
1.00 |
|
Pied Kingfisher |
Ceryle rudis |
LC, (1) |
2 |
1.00 |
|
Common Kingfisher |
Alcedo atthis |
(1) |
4 |
3.25 |
|
Zitting Cisticola |
Cisticola juncidis |
LC, (1) |
2 |
0.75 |
|
White-shouldered Starling |
Sturnus sinensis |
(LC) |
3 |
5.50 |
|
Red-rumped Swallow |
Hirundo daurica |
- |
1 |
1.25 |
|
|
|
|
15 |
|
(1) indicates wetland-dependant or -associated species.
(2) Conservation status follows that of Fellowes et al. (2002) and BirdLife International
listing (2010).
(3) indicates number of
surveys recorded within the survey period.
(4) equals the average
number of individual species surveyed in each survey (i.e. total counts in all
surveys divided by number of surveys)
Appendix J.
Summary of Herpetofauna, and Insects Surveys conducted in June 2010
|
Table J1. Summary of
herpetofauna surveys conducted between 1 June and 30 June 2010
|
Species Name |
Scientific Name |
Conservation Status(1) |
June |
|
|
|
|
Survey(2) |
Mean(3) |
|
|
Amphibians |
|
|
2 |
|
|
Günther’s Frog |
Rana
guentheri |
- |
2 |
2.0 |
|
Ornate Pigmy Frog |
Microhyla
ornata |
- |
1 |
0.5 |
|
|
|
|
Survey(2) |
Mean(3) |
|
Reptile |
|
|
1 |
|
|
Bowring’s Gecko |
Hemidactylus bowringii |
- |
1 |
1.0 |
(1)
Conservation status follows that of Fellowes et al. (2002), Chan et al.
(2005) and Karsen et al. (1998).
(2)
indicates number of surveys recorded within the survey period.
(3) equals the average number of individual species surveyed
in each survey (i.e. total counts in all surveys divided by number of surveys)
Table J2. Summary of mammal
observed conducted between 1 June and 30 June 2010
|
Species
Name |
Scientific Name |
Conservation Status(1) |
June |
|
(No Records in June 2010) |
|||
Table J3. Summary of insect
surveys conducted between 1 June and 30 June 2010
|
Common Name |
Scientific Name |
Conservation
Status(1) |
June |
|
|
|
|
Survey(2) |
Mean(3) |
|
|
Odonate |
|
|
9 |
|
|
Common Bluetail |
Aschnura senegalensis |
- |
2 |
2.0 |
|
Pale-spotted Emperor |
Anax guttatus |
- |
1 |
0.5 |
|
Asian Amberwing |
Brachythemis contaminata |
- |
2 |
6.0 |
|
Coastal Glider |
Macrodiplax cora |
LC |
2 |
14.0 |
|
Green Skimmer |
Orthetrum sabina |
- |
2 |
5.0 |
|
Wandering Glider |
Pantala flavescens |
- |
1 |
0.5 |
|
Variegated Flutterer |
Rhyothemis variegata |
- |
2 |
12.5 |
|
Saddlebag Glider |
Tramea virginia |
- |
1 |
0.5 |
|
Scarlet Basker |
Urothemis signata |
LC |
1 |
1.5 |
|
Butterfly |
|
|
7 |
|
|
Spangle |
Papilio protenor |
- |
1 |
0.5 |
|
Red-base Jezebel |
Delias pasithoe |
- |
2 |
1.0 |
|
Indian Cabbage White |
Pieris canidia |
- |
2 |
7.0 |
|
Mottled Emigrant |
Catopsilia pyranthe |
- |
1 |
1.5 |
|
Common Grass Yellow |
Eurema hecabe |
- |
2 |
2.5 |
|
Pale Grass Blue |
Zizeeria maha |
- |
1 |
1.5 |
|
Lesser Grass Blue |
Zizina otis |
- |
1 |
0.5 |
(1)
Conservation status follows that of Fellowes et al. (2002), Lo & Hui (2004), Wilson (2004) and Young &
Yiu (2002).
(2) indicates number of surveys recorded within the survey period.
(3) equals the average number of individual species
surveyed in each survey (i.e. total counts in all surveys divided by number of
surveys)