The Project “Development at Anderson Road – Site Formation and
Associated Infrastructure Works”
(hereafter called “the Project”) is proposed to form
platforms for housing development and associated
uses in area of about 20 hectares, and to carry out
necessary infrastructural upgrading or improvement
works to cater for the proposed development.
China State Construction Engineering (Hong Kong) Limited (CSCE) was commissioned as the Contractor of the Project. AECOM Asia Co. Ltd. (AECOM) was employed by CSCE
as the Environmental Team (ET) to undertake the Environmental
Monitoring and Audit (EM&A) works for the Project.
The impact EM&A for the Project includes air
quality and noise monitoring. The EM&A programme for Sau Ming Primary
School (ID 4) and Sau Mau Ping Catholic Primary School (ID 5) commenced on 1
May 2008, while for Kwun Tong Government Secondary School (ID 1A), On Yat House (ID 2) and Sau Nga
House (ID 3) commenced on 1 June 2008.
The monitoring stations ID 4 & ID 5 will serve
both the entire Development of Anderson Road
(Schedule 3 Designated Project (DP)) project as well
as the Widening of Po Lam Road (Schedule 2 DP) project.
The
construction for the
Widening of Po Lam Road (Schedule 2 DP) project was
commenced on 21 September 2011.
This
report documents the findings of
EM&A works for ID 1A, ID
2, ID 3, ID 4 and ID 5 conducted in the period between 1 and 28 February 2014. As informed
by the Contractor, construction activities in the reporting period were:-
l Site
clearance
l Establishment
of temporary access road and temporary drainage
l Slope
stabilization and upgrading works
l Temporary
traffic arrangement and road work at New Clear Water Bay Road, Sau Mau Ping
Road, Sau Fung Street , J2 and J/O Po Lam Road
l Toe / Berm
planter and platform drainage construction
l Retaining
wall structural works
l Trench
excavation and pipe laying
l RE wall
panel installation and backfilling
l Pipe pile
construction of Footbridge C
l Structural
works at Footbridges A, B and C
l Pipe
Jacking at Sau Mau Ping Road
l Earth work
and C&D stock pile
l Breaking of
rock trench at public road
l Drainage
construction at public road
l Construction
of the twin 1800mm dia. pipes
l Construction
of the coping structure at R15b
l Installation
of precast panel to Bridge A
l Installation
of noise barriers
l Waterworks
l Mini-pile
construction of Footbridge A tower B
Breaches of Action
and Limit Levels for Air Quality
No exceedance of Action and Limit Level was recorded for both 1-hour TSP
and 24-hour TSP monitoring at all monitoring locations in the reporting month.
Breaches of Action
and Limit Levels for Noise
According to the information provided by the
Contractor, no Action Level exceedance was recorded since no noise related
complaint was received in the reporting month.
No exceedance
of Limit Level of noise was recorded in the reporting month.
Complaint,
Notification of Summons and Successful Prosecution
As informed by the
Contractor on 6 March 2014, two summonses were received regarding the suspected
violation case of Water Pollution Control Ordinance (Cap. 358) within site
working area of the project on 4 May 2013.
According to the information provided by the
Contractor, no environmental complaint and no
notification of summons and successful prosecution were received in the reporting month.
Reporting Changes
There was
no reporting change in the reporting month.
Future Key Issues
Key issues to be considered in the
coming month included:-
- Properly store and label oil drums and chemical containers placed on
site;
- Proper chemicals, chemical wastes and wastes management;
- Maintenance works should be carried out within roofed, paved areas with
proper drainage system to handle run-off from maintenance works;
- Collection and segregation of construction waste and general refuse
should be carried out properly and regularly;
- Site runoff should be properly collected and treated prior to discharge;
- Regular review and maintenance of drainage systems and desilting
facilities;
- Exposed slopes/soil stockpiles should be properly treated to avoid
generation of silty surface run-off during rainstorm;
- Proper mitigation measures should be provided to avoid relocation of
treated contaminated soil;
- Regular review and maintenance of wheel washing facilities provided at
all site entrances/exits;
- Suppress dust generated from work processes with use of bagged cements,
earth movements, drilling works, breaking works, excavation activities, exposed
areas/slopes/soil stockpiles and haul road traffic;
- Conduct regular inspection of the working machineries within works area
to avoid any dark smoke emission and oil leakage;
- Quieter powered mechanical equipment should be used;
- Provision of proper and effective noise control measures, such as
erection of movable noise barriers during blasting, breaking and drilling works
and at crushing plant works area and provision of acoustic material wrapping to
breaking tips of breakers; and
- Proper protection and regular inspection of existing trees,
transplanted/retained trees.
1.1.1 The Project site is located in the
East Kowloon District. It is bounded by Anderson Road to the north, the realigned Sau Mau Ping Road
to the south, Po Lam Road
to the east, and Lee On Road and Shun On Road to the west.
1.1.2 The objective of the Project
“Development at Anderson Road Site Formation and Associated Infrastructure Works” under Contract
CV/2007/03 (hereafter called “the Project”) is to provide land for constructing
public housing and
government and public facilities. The development will provide 16,100 public housing units for 48,000 people in
phases between 2015 and 2016.
1.1.3 The scope of works of this Project
includes construction of site formation, roads, drains and upgrading of existing infrastructure
to provide usable land of about 20 hectares for housing and associated government,
institution or community uses at the site between existing Anderson Road Quarry and Sau Mau Ping Road
in Kwun Tong District.
1.1.4 The Project is anticipated to
complete in mid 2015.
1.1.5 Part of the Project involving
widening of existing Po Lam Road
is a designated project and is governed by an Environmental Permit (EP) EP-140/2002, while the rest of
the Project is non-designated. Baseline monitoring covering the entire Project site was
undertaken and baseline monitoring report was prepared prior to commencement of
construction of the Project in accordance with Conditions 3.2 and 3.4 of the EP (EP-140/2002) and
the Environmental Monitoring and Audit (EM&A) Manual. The construction for the Widening of Po Lam Road was commenced
on 21 September 2011.
1.1.6 According to the EP and the EM&A
Manual of the Project, there is a need of an EM&A programme including air
quality and noise monitoring.
1.1.7 The EM&A programme for Sau Ming
Primary School (ID 4) and Sau Mau Ping Catholic Primary School (ID 5) commenced
on 1 May 2008, while for Kwun Tong Government Secondary School (ID 1A), On Yat House (ID 2) and Sau Nga
House (ID 3) commenced on 1 June 2008.
1.1.8
The monitoring stations ID 4 & ID 5 will serve
both the entire Development of Anderson Road (Schedule 3 Designated Project
(DP)) project as well as the Widening of Po Lam Road. (Schedule 2 DP) project.
1.1.9 AECOM
Asia Co. Ltd. (AECOM) was
employed by the Contractor, China State Construction Engineering (Hong Kong) Limited
(CSCE), as the Environmental Team (ET) to undertake the EM&A works for the Project. In accordance
with the EM&A Manual of the Project, environmental monitoring of air
quality, noise and environmental site inspections would be required for this
Project.
1.2
Scope
of Report
1.2.1 This is the sixty-ninth monthly EM&A
Report under the Contract CV/2007/03 - Development at Anderson Road – Site
Formation and Associated Infrastructure Works. This report presents a summary
of the environmental monitoring and audit works, list of activities and
mitigation measures proposed by the ET for the Project in February 2014 for ID 1A, ID 2, ID 3, ID 4 and ID 5.
1.3
Project
Organization
1.3.1 The project organization structure
is shown in Appendix A. The key personnel contact names and numbers are
summarized in Table 1.1.
Table 1.1 Contact Information of Key Personnel
|
Party
|
Position
|
Name
|
Telephone
|
Fax
|
|
ER (Ove Arup)
|
Chief Resident Engineer
|
Dennis Leung
|
3656 3000
|
3656 3100
|
|
Senior Resident
Engineer
|
Michael Wright
|
3656 3000
|
3656 3100
|
|
Resident Engineer
(Safety and Environmental)
|
Kenneth Lee
|
3656 3000
|
3656 3100
|
|
IEC (ENVIRON)
|
Independent Environmental Checker
|
David Yeung
|
3465 2888
|
3465 2899
|
|
Contractor
(CSCE)
|
Site Agent
|
C S Yeung
|
2704 2095
|
2702 6553
|
|
Environmental Manager
|
Leo Chung
|
2704 2095
|
2702 6553
|
|
ET (AECOM)
|
ET Leader
|
Yiu Wah Fung
|
3922 9366
|
2317 7609
|
1.4.1
As informed by the Contractor, the Contactor has carried out the following
major activities in the
reporting month:-
l Site
clearance
l Establishment
of temporary access road and temporary drainage
l Slope
stabilization and upgrading works
l Temporary
traffic arrangement and road work at New Clear Water Bay Road, Sau Mau Ping Road,
Sau Fung Street , J2 and J/O Po Lam Road
l Toe / Berm
planter and platform drainage construction
l Retaining
wall structural works
l Trench
excavation and pipe laying
l RE wall
panel installation and backfilling
l Pipe pile
construction of Footbridge C
l Structural
works at Footbridges A, B and C
l Pipe
Jacking at Sau Mau Ping Road
l Earth work
and C&D stock pile
l Breaking of
rock trench at public road
l Drainage
construction at public road
l Construction
of the twin 1800mm dia. pipes
l Construction
of the coping structure at R15b
l Installation
of precast panel to Bridge A
l Installation
of noise barriers
l Waterworks
l Mini-pile
construction of Footbridge A tower B
1.4.2 The general layout plan of the
Project site showing the contract area is shown in Figure 1.1.
1.4.3 The environmental mitigation
measures implementation schedule are presented in Appendix B.
1.5
Summary of EM&A Programme Requirements
1.5.1 The EM&A programme required
environmental monitoring for air quality, noise and environmental site
inspections for air quality, noise, water quality, chemical and waste
management. The EM&A requirements for each parameter described in the
following sections include:-
- All monitoring parameters;
- Monitoring schedules for the reporting month and
forthcoming months;
- Action and Limit levels for all environmental
parameters;
- Event / Action Plan;
- Environmental mitigation measures, as
recommended in the Project EIA study final report; and
- Environmental requirement in contract documents.
2.1.1
In accordance with the EM&A Manual, 1-hour and
24-hour TSP levels at 5 air quality monitoring stations were established. Impact
1-hour TSP monitoring was conducted for at least three times every 6 days,
while impact 24-hour TSP monitoring was carried out for at least once every 6
days. The Action and Limit level of the air quality monitoring is provided in
Appendix C.
2.2.1
24-hour TSP air quality monitoring was performed
using High Volume Sampler (HVS) located at each designated monitoring station.
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. Brand and
model of the equipment is given in Table 2.1.
Table 2.1 Air Quality Monitoring Equipment
2.3.1 Monitoring
stations, ID 2, ID 3, ID 4 and ID 5, were set up at the proposed locations in
accordance with EM&A Manual, while monitoring station, ID 1A, was set up at a location agreed by
the ER and IEC. Figure 2.1 shows the locations of the monitoring stations.
Table 2.2 describes the details of the monitoring stations.
Table 2.2 Locations of Air Quality Monitoring
Stations
|
ID
|
Location
|
Monitoring Station
|
|
1A
|
Kwun Tong
Government Secondary
School
|
Roof top of the premises facing Anderson Road
|
|
2
|
On Yat House
|
Roof top of the
premises facing Lee On Road
|
|
3
|
Sau Nga House
|
Roof top of the premises facing Sau Mau Ping Road
|
|
4
|
Sau Ming Primary School
|
Roof top of the premises
|
|
5
|
Sau Mau Ping Catholic
Primary School
|
Roof top of the premises
|
2.4.1
Table 2.3 summarizes the monitoring parameters, frequency
and duration of impact TSP monitoring.
Table 2.3 Air Quality Monitoring Parameters,
Frequency and Duration
2.5.1 24-hour
TSP Monitoring
(a)
The HVS was installed
in the vicinity of the air sensitive receivers.
The following criteria were considered in the installation of the HVS:-
(i)
A horizontal platform with appropriate support to
secure the sampler against gusty wind was provided.
(ii)
The distance between the HVS and any obstacles,
such as buildings, was at least twice the height that the obstacle protrudes
above the HVS.
(iii)
A minimum of 2 meters separation from walls,
parapets and penthouse for rooftop sampler.
(iv)
A minimum of 2 meters separation from any
supporting structure, measured horizontally is required.
(v)
No furnace or incinerator flues nearby.
(vi)
Airflow around the sampler was unrestricted.
(vii)
Permission was obtained to set up the samplers and
access to the monitoring stations.
(viii)
A secured supply of electricity was obtained to
operate the samplers.
(ix)
The sampler was located more than 20 meters from
any dripline.
(x)
Any wire fence and gate, required to protect the
sampler, did not obstruct the monitoring process.
(xi)
Flow control accuracy was kept within ±2.5%
deviation over 24-hour sampling period.
(b)
Preparation of Filter
Papers
(i)
Glass fibre filters, G810 were labelled and
sufficient filters that were clean and without pinholes were selected.
(ii)
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; the relative humidity (RH) was < 50% and not variable by
more than ±5%. A convenient working RH was 40%.
(iii)
All filter papers were prepared and analysed by ALS Technichem (HK) Pty Ltd., which is a HOKLAS
accredited laboratory and has comprehensive quality assurance and quality
control programmes.
(c)
Field Monitoring
(i)
The power supply was checked
to ensure the HVS works properly.
(ii)
The filter holder and the area surrounding the
filter were cleaned.
(iii)
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.
(iv)
The filter was properly aligned on the screen so
that the gasket formed an airtight seal on the outer edges of the filter.
(v)
The swing bolts were fastened to hold the filter holder
down to the frame. The pressure applied
was sufficient to avoid air leakage at the edges.
(vi)
Then the shelter lid was closed and was secured
with the aluminium strip.
(vii)
The HVS was warmed-up for about 5 minutes to
establish run-temperature conditions.
(viii)
A new flow rate record sheet was set into the flow
recorder.
(ix)
On site temperature and atmospheric pressure
readings were taken and the flow rate of the HVS was checked and adjusted at
around 1.3 m3/min,
and complied with the range specified in the EM&A Manual (i.e. 0.6-1.7 m3/min).
(x)
The programmable digital timer was set for a
sampling period of 24 hrs, and the starting time, weather condition and the
filter number were recorded.
(xi)
The initial elapsed time was recorded.
(xii)
At the end of sampling, on site temperature and
atmospheric pressure readings were taken and the final flow rate of the HVS was
checked and recorded.
(xiii)
The final elapsed time was recorded.
(xiv)
The sampled filter was removed carefully and folded
in half length so that only surfaces with collected particulate matter were in
contact.
(xv)
It was then placed in a clean plastic envelope and
sealed.
(xvi)
All monitoring information was recorded on a
standard data sheet.
(xvii)
Filters were then sent to ALS Technichem (HK) Pty Ltd. for analysis.
(d)
Maintenance and
Calibration
(i)
The HVS and its
accessories were maintained in good working condition, such as replacing motor
brushes routinely and checking electrical wiring to ensure a continuous power
supply.
(ii)
HVSs were calibrated using TE-5025A Calibration Kit upon installation and thereafter
at bi-monthly intervals.
(iii)
Calibration certificate of the TE-5025A Calibration Kit and the HVSs are provided in
Appendix D.
2.5.2 1-hour
TSP Monitoring
(a)
Measuring Procedures
The measuring procedures of the 1-hour dust meter
were in accordance with the Manufacturer’s Instruction Manual as follows:-
(i)
Turn the power on.
(ii)
Close the air collecting opening cover.
(iii)
Push the “TIME SETTING” switch to [BG].
(iv)
Push “START/STOP”
switch to perform background measurement for 6 seconds.
(v)
Turn the knob at SENSI ADJ position to insert the
light scattering plate.
(vi)
Leave the equipment for 1 minute upon “SPAN CHECK”
is indicated in the display.
(vii)
Push “START/STOP” switch to perform automatic
sensitivity adjustment. This measurement takes 1 minute.
(viii)
Pull out the knob and return it to MEASURE
position.
(ix)
Push the “TIME SETTING” switch the time set in the
display to 3 hours.
(x)
Lower down the air collection opening cover.
(xi)
Push “START/STOP” switch to start measurement.
(b)
Maintenance and
Calibration
(i)
The 1-hour TSP meter
was calibrated at 1-year intervals against a continuous particulate TEOM
Monitor, Series 1400ab. Calibration certificates of the Laser Dust Monitors are
provided in Appendix D.
2.6.1 The schedule for environmental monitoring in February 2014 is provided
in Appendix E.
2.7.1 The
monitoring results for 1-hour TSP and 24-hour TSP are summarized in Tables 2.4 and 2.5 respectively.
Detailed air quality monitoring results are presented in Appendix F.
Table 2.4 Summary of 1-hour TSP Monitoring Results in
the Reporting Period
|
|
Average (mg/m3)
|
Range (mg/m3)
|
Action Level
(mg/m3)
|
Limit Level (mg/m3)
|
|
ID 1A
|
78.5
|
67.4 – 83.6
|
201.5
|
500
|
|
ID 2
|
80.3
|
69.7 – 84.2
|
197.0
|
500
|
|
ID 3
|
80.6
|
70.8 – 84.2
|
203.7
|
500
|
|
ID 4
|
79.1
|
71.9 – 83.7
|
264.6
|
500
|
|
ID 5
|
79.3
|
67.7 – 84.4
|
267.4
|
500
|
Table 2.5 Summary of
24-hour TSP Monitoring Results in the Reporting Period
|
|
Average (mg/m3)
|
Range (mg/m3)
|
Action Level
(mg/m3)
|
Limit Level (mg/m3)
|
|
ID 1A
|
41.6
|
32.3 – 56.1
|
170.2
|
260
|
|
ID 2
|
53.9
|
33.3 – 99.7
|
200.0
|
260
|
|
ID 3
|
50.2
|
38.6 – 71.7
|
200.0
|
260
|
|
ID 4
|
42.5
|
36.6 – 49.9
|
181.3
|
260
|
|
ID 5
|
54.0
|
44.0 – 62.6
|
180.8
|
260
|
2.7.2
No Action and Limit Level
exceedance was recorded for both 1-hour TSP and 24-hour TSP monitoring at all
monitoring locations in the reporting month.
2.7.3 The event action plan is annexed in
Appendix I.
2.7.4
Major dust sources during the dust monitoring included
construction dust from the Project site, construction dust from other
construction sites nearby and nearby traffic emission.
2.7.5
Weather information including wind speed and
wind direction is annexed in Appendix H. The information was obtained from Hong
Kong Observatory Tseung Kwan O Automatic Weather Station and Anemometer
Station.
3.1.1 In
accordance with the EM&A Manual, impact noise levels should be obtained
at 5 noise monitoring stations. Impact noise monitoring was conducted for at
least once per week during the construction phase of the Project. The Action
and Limit level of the noise monitoring is provided in Appendix C.
3.2.1
Noise monitoring was performed using sound level
meter at each designated monitoring station.
The sound level meters deployed comply with the International
Electrotechnical Commission Publications (IEC) 651:1979 (Type 1) and 804:1985
(Type 1) specifications. Acoustic
calibrator was deployed to check the sound level meters at a known sound
pressure level. Brand and model of the
equipment is given in Table 3.1.
Table 3.1 Noise Monitoring Equipment
3.3.1 Monitoring
stations, ID 2, ID3, ID 4 and ID 5, were set up at the proposed locations in accordance
with EM&A Manual, while monitoring station, ID 1A, was set up at a location agreed by the ER and IEC.
Figure 2.1 shows the locations of the monitoring stations. Table 3.2 describes
the details of the monitoring stations.
Table 3.2 Locations of Impact Noise Monitoring
Stations
|
ID
|
Location
|
Monitoring
Station
|
|
1A
|
Kwun Tong
Government Secondary
School
|
1m from the exterior
of the roof top façade of the premises facing Anderson Road
|
|
2
|
On Yat House
|
1m from the exterior
of the roof top façade of the premises facing Lee On Road
|
|
3
|
Sau Nga House
|
1m from the exterior
of the roof top façade of the premises facing Sau Mau Ping Road
|
|
4
|
Sau Ming Primary School
|
1m from the exterior of the roof top façade of the
premises facing Sau Mau Ping Road
|
|
5
|
Sau Mau Ping Catholic
Primary School
|
1m from the exterior of the roof top façade of the premises facing Po Lam Road
|
3.4.1
Table 3.3 summarizes the monitoring parameters,
frequency and duration of impact noise monitoring.
Table 3.3 Noise
Monitoring Parameters, Frequency and Duration
|
Monitoring Station
|
Parameter and Duration
|
Frequency
|
|
ID 1A, ID
2, ID 3, ID 4 & ID5
|
30-mins measurement at each monitoring
station between 0700 and 1900 on normal weekdays. Leq, L10
and L90 would be recorded.
|
At least once per week
|
3.5.1 Monitoring
Procedure
(a)
The sound level meter was set on a tripod at a height of 1.2 m
above the ground.
(b)
Façade measurements were made at all monitoring
locations.
(c)
The battery condition was checked to ensure the correct functioning of the meter.
(d)
Parameters such as frequency weighting, the time
weighting and the measurement time were set as follows:
(i)
frequency weighting: A
(ii)
time weighting: Fast
(iii)
time measurement: Leq(30-minutes) during
non-restricted hours i.e. 07:00 – 1900 on normal weekdays; Leq(5-minutes)
during restricted hours i.e. 19:00
– 23:00 and 23:00 – 07:00 of normal weekdays, whole day of Sundays and Public
Holidays
(e)
Prior to and after each noise measurement, the
meter was calibrated using the acoustic calibrator for 94dB(A) at 1000 Hz. If the difference in the calibration level
before and after measurement was more than 1 dB(A), the measurement would be
considered invalid and repeat of noise measurement would be required after
re-calibration or repair of the equipment.
(f)
During the monitoring period, the Leq, L10
and L90 were recorded. In
addition, site conditions and noise sources were recorded on a standard record
sheet.
(g)
Noise measurement was paused during periods of high
intrusive noise (e.g. dog barking, helicopter noise) if possible. Observations
were recorded when intrusive noise was unavoidable.
(h)
Noise monitoring was cancelled in the presence of
fog, rain, wind with a steady speed exceeding 5m/s, or wind with gusts exceeding 10m/s.
3.5.2 Maintenance
and Calibration
(a)
The microphone head
of the sound level meter was cleaned with soft cloth at
regular intervals.
(b)
The meter and
calibrator were sent to the supplier or HOKLAS laboratory to check and
calibrate at yearly intervals.
(c)
Calibration
certificates of the sound level meters and acoustic
calibrators are provided in Appendix D.
3.6.1
The schedule for environmental monitoring in February 2014 is provided in
Appendix E.
3.7
Monitoring
Results
3.7.1
The monitoring results for noise are summarized
in Table 3.4 and the monitoring data is provided in Appendix G.
Table 3.4 Summary of Impact Noise Monitoring
Results in the Reporting Period
|
|
Average,
dB(A),
Leq (30
mins)
|
Range, dB(A),
Leq (30
mins)
|
Limit Level,
dB(A),
Leq (30
mins)
|
|
ID 1A
|
61.2
|
56.0 – 63.6
|
*65/70
|
|
ID 2
|
62.6
|
58.5 – 65.2
|
75
|
|
ID 3
|
61.6
|
55.0 – 66.4
|
75
|
|
ID 4
|
63.6
|
58.8 – 65.3
|
*65/70
|
|
ID 5
|
59.7
|
48.4 – 64.2
|
*65/70
|
Note: *Daytime noise Limit Level
of 70dB(A) applies to education institutions while 65dB(A) applies
during school examination period.
3.7.2
According to the
information provided by the Contractor, no noise complaint was received in the
reporting month; hence, no Action Level
exceedance was recorded.
3.7.3 No Limit Level exceedance of noise
was recorded at all monitoring stations in the reporting month.
3.7.4 The event action plan is annexed in
Appendix I.
3.7.5
Major noise sources during the noise monitoring
included construction noise from the Project site, construction noise from other construction sites nearby,
nearby traffic noise and noise from
school activities and community noise.
4
ENVIRONMENTAL SITE INSPECTION AND AUDIT
4.1.1 Site Inspections were carried out on
a weekly basis to monitor the implementation of proper environmental pollution control and mitigation measures for
the Project. In the reporting month, 4 site inspections were carried out on 6, 13, 19 and 27
February 2014. Particular observations and
status of non-compliance issued by IEC are described below.
4.1.2
The
Contractor has rectified most of the observations as identified during
environmental site inspection in the reporting month within agreed time frame.
Rectifications of remaining identified items are undergoing by the Contractor.
Follow-up inspections on the status on provision of mitigation measures will be
conducted to ensure all identified items are mitigated properly.
4.1.3 Air
Quality Impact
l Mud
trail at the site entrance of R15 was observed. The Contractor should clear the
mud trail and ensure that all vehicles would have their wheels washed before
leaving the site.
l Ineffective
wheel washing mechanism was observed at Gate 6 and Gate 5. The Contractor
should to make sure all vehicles should have their wheel washed before leaving
the site.
l Dark
smoke was observed emitting from the excavator adjacent to the RE Site Office.
The Contractor should provide proper maintenance to the excavator to prevent
the arising of dark smoke.
l Fugitive
dust was observed arisen from the drilling activity near the RE Site Office.
The Contractor should provide spraying of water to the concerned works as dust
suppression measure.
4.1.4 Construction
Noise Impact
l Insufficient
noise abatement measure for pilling work was observed at works area in
Footbridge A. The Contractor should enhance the mitigation measures to lessen
noise nuisance to NSR.
4.1.5 Water Quality Impact
l Nil
4.1.6 Chemical and Waste Management
l Chemical
containers and oil drum were placed on bare ground without provision of drip
trays in Branch N, Footbridge B, Portion C, L1 and L2. The Contractor was
reminded to provide drip trays as soon as possible to prevent oil leakage.
l Oil leaking
generator was observed at Road L1. The Contractor should clear the oil stain
and disposed of as chemical waste, and maintain the generator in a good
condition in order to prevent oil leakage.
4.1.7 Landscape and
Visual Impact
l Nil
4.2.1
The Contractor is registered as a chemical waste producer for this
Project. C&D materials and wastes sorting were carried out on site.
Receptacles were available for C&D wastes and general refuse collection.
4.2.2
As advised by the
Contractor, a total of 13,021m3 C&D material was generated on
site in the reporting month. 4,084m3 of hard rock and large broken concrete was generated and transferred to
Anderson Road Quarry for further process.
For C&D waste, 23,050 kg of metals was generated
and collected by registered recycling collector. 10 kg of paper cardboard
packing were generated on site and collected by
registered recycling collector. No plastic and chemical waste was collected by registered recycling collector and licensed chemical waste collectors
respectively. 719.71 tonnes of other types of wastes (e.g. general refuse
and tree debris) were generated on site and disposed of at North East New
Territories (NENT) Landfill.
4.2.3 The Contractor is advised to
properly maintain on site C&D materials and wastes collection, sorting and
recording system and maximize reuse / recycle of C&D materials and wastes.
The Contractor is reminded to properly maintain the site tidiness and dispose
of the wastes accumulated on site regularly and properly.
4.2.4 The
Contractor is reminded that chemical waste containers should be properly
treated and stored temporarily in designated chemical waste storage area on
site in accordance with the Code of Practise on the Packaging, Labelling and
Storage of Chemical Wastes.
4.3.1 The
environmental licenses and permits for this Project and valid in the reporting
month is summarized in Table 4.1.
Table 4.1 Summary of Environmental Licensing and
Permit Status
|
Statutory Reference
|
Description
|
Permit No.
|
Valid
Period
|
Remarks
|
|
From
|
To
|
|
EIAO
|
Environmental Permit
|
EP-140/2002
|
--
|
--
|
- Widening of a section of
Po Lam Road
- Improvement works to
existing roads
|
|
APCO
|
NA notification
|
--
|
16/04/09
|
--
|
-
Whole Construction Site
|
|
WPCO
|
Discharge License
|
WT0002558-2009
|
06/08/09
|
31/08/14
|
-
Discharge of Construction Runoff
|
|
Discharge License
|
EP670/I/C0613/293
|
02/02/12
|
28/02/17
|
- Discharge from Road L6
|
|
WDO
|
Chemical Waste Producer Registration
|
5213-292-C3249-32
|
19/03/08
|
--
|
-
Whole Construction Site
|
|
Waste Charges Account
|
7006839
|
12/03/08
|
--
|
-
Whole Construction Site
|
|
NCO
|
Construction Noise Permit
|
GW-RE0982-13
|
20/09/13
|
03/02/14
|
- Hiu
Kwong Street Works
|
|
GW-RE0164-14
|
20/02/14
|
19/07/14
|
- Hiu
Kwong Street Works
|
|
GW-RE0189-14
|
20/02/14
|
19/07/14
|
-
Whole Construction Site
|
4.4.1 In response to the site audit findings,
the Contractor carried out corrective actions promptly for
particular items recorded.
Outstanding items were closely monitored to ensure mitigation measures are
implemented properly.
4.4.2 A summary of the Implementation
Schedule of Environmental Mitigation Measures (EMIS) is presented in Appendix
B. Many necessary
mitigation measures were implemented properly.
4.5.1 All 1-hour TSP and 24-hour TSP
results were below the Action and Limit level at all monitoring locations in
the reporting month.
4.5.2
According to the information provided by the
Contractor, no noise complaint was received in the reporting month; hence, no Action Level exceedance was recorded.
4.5.3 No Limit Level exceedance for noise
was recorded at all monitoring stations in the reporting month.
4.5.4
Cumulative statistics on exceedances is provided in Appendix J.
4.6.1 Complaints shall be referred to the
ET Leader for action. The ET Leader shall undertake the following procedures
upon receipt of any complaint:-
l Log complaint and date of receipt
onto the complaint database and inform the IC(E) immediately;
l Investigate the complaint to determine
its validity, and assess whether the source of the problem is due to works
activities;
l Identify mitigation measures in
consultation with the IC(E) if a complaint is valid and due to works;
l Advise the Contractor if additional
mitigation measures are
required;
l Review the Contractor’s response to
identified mitigation measures, and the updated situation;
l If the complaint is transferred from
EPD, submit interim report to EPD on status of the complaint investigation and
follow-up action within the time frame assigned by EPD;
l Undertake additional monitoring and
audit to verify the situation if necessary, and review that circumstances
leading to the complaint to not recur;
l Report investigation results and
subsequent actions to complainant (if the source of complaint is EPD, the
results should be reported within the time frame assigned by EPD); and
l Record the complaint, investigation,
the subsequent actions and the results in the monthly EM&A reports.
4.6.2 During any complaint investigation work,
the Contractor and the ER shall cooperate with the ET Leader in providing all
necessary information and assistance for completion of the investigation. If
mitigation measures are identified in the investigation, the Contractor shall
promptly carry out the mitigation. The ER shall ensure that all necessary
measures have been carried out by the Contractor.
4.6.3
As
informed by the Contractor on 6 March 2014, two summonses were received
regarding the suspected violation case of Water Pollution Control Ordinance
(Cap. 358) within site working area of the project on 4 May 2013.
4.6.4
Referring to the information provided by the
Contractor, no environmental
complaint and no notification of summons and successful prosecution were
received in the reporting month.
4.6.5 Cumulative
statistics on complaints, notification of summons
and successful prosecutions is provided in Appendix J.
5
FUTURE KEY ISSUES
5.1.1 The major construction works in March and
April 2014 will be:-
l Site
clearance
l Establishment
of temporary access road and temporary drainage
l Slope
stabilization and upgrading works
l Temporary
traffic arrangement and road work at New Clear Water Bay Road, Sau Mau Ping
Road, Sau Fung Street , J2 and J/O Po Lam Road
l Toe / Berm
planter and platform drainage construction
l Retaining
wall structural works
l Trench
excavation and pipe laying
l RE wall
panel installation and backfilling
l Pipe pile
construction of Footbridge C
l Structural
works at Footbridges A, B and C
l Pipe
Jacking at Sau Mau Ping Road
l Earth work
and C&D stock pile
l Breaking of
rock trench at public road
l Drainage
construction at public road
l Construction
of the twin 1800mm dia. pipes
l Construction
of the coping structure at R15b
l Installation
of precast panel to Bridge A
l Installation
of noise barriers
l Waterworks
l Mini-pile
construction of Footbridge A tower B
5.2.1 Key issues to be considered in the
coming months included:-
-
Properly store and label
oil drums and chemical containers placed on site;
-
Proper chemicals, chemical
wastes and wastes management;
-
Maintenance works should be
carried out within roofed, paved areas with proper drainage system to handle
run-off from maintenance works;
-
Collection and segregation
of construction waste and general refuse should be carried out properly and regularly;
-
Site runoff should be
properly collected and treated prior to discharge;
-
Regular review and
maintenance of drainage systems and desilting facilities;
-
Exposed slopes/soil
stockpiles should be properly treated to avoid generation of silty surface
run-off during rainstorm;
-
Proper mitigation measures
should be provided to avoid relocation of treated contaminated soil;
-
Regular review and
maintenance of wheel washing facilities provided at all site entrances/exits;
-
Suppress dust generated
from work processes with use of bagged cements, earth movements, drilling
works, breaking works, excavation activities, exposed areas/slopes/soil
stockpiles and haul road traffic;
-
Conduct regular inspection
of the
working machineries within works area to avoid any dark smoke emission and oil
leakage;
-
Quieter powered mechanical
equipment should be used;
-
Provision of proper and
effective noise control measures, such as erection of movable noise barriers
during blasting, breaking and drilling works and at crushing plant works area and provision of acoustic material wrapping to breaking tips of
breakers; and
-
Proper protection and
regular inspection of existing trees, transplanted/retained trees.
5.3.1
The
tentative schedule for environmental monitoring in March 2014 is provided in Appendix E.
6.1.1
The
construction phase of the project commenced in May 2008.
6.1.2 1-hour TSP, 24-hour TSP and noise
monitoring were carried out in the reporting month.
6.1.3
All
1-hour TSP and 24-hour TSP monitoring results complied with the Action / Limit
Level at all monitoring locations in the reporting month.
6.1.4
According
to the Contractor’s information, no noise complaint was received in the reporting month.
Hence, no Action Level
exceedance was recorded.
6.1.5
No Limit Level exceedance for noise was recorded at all monitoring stations in the reporting
month.
6.1.6 Environmental site inspections were carried out 4 times in February
2014. Recommendations on
remedial actions were given to the Contractor for the deficiencies identified
during the site audit.
6.1.7
As
informed by the Contractor on 6 March 2014, two summonses were received
regarding the suspected violation case of Water Pollution Control Ordinance
(Cap. 358) within site working area of the project on 4 May 2013.
6.1.8 According to the information provided
by the Contractor, no environmental complaint and no notification of summons
and successful prosecution were received in the reporting month.
6.2.1 According to the environmental site inspections performed in
the reporting month, the following recommendations were provided:-
Air
Quality Impact
l Regular spraying
of water should be provided as dust suppression measure.
Moreover, regular review to the wheel washing facilities should be provided at
works area to ensure the deposited silt on vehicles’ wheels and bodies was
washed off effectively.
Construction
Noise Impact
l
Proper and effective
noise mitigation measures (e.g. provision of noise barriers, absorptive
material coverage on scaffolding and absorptive material wrappings to the
breaking tips of the breakers) should be implemented at the breaking and
drilling works areas to minimize the noise impacts to sensitive receivers
nearby. The Contractor should conduct regular review on and maintain the noise
screening measures provided within works area.
Water
Quality Impact
l
No specific observation was identified in the
reporting month.
Chemical and Waste
Management
l
Sufficient drip tray
should be provided to the equipment and chemical containers in order to retain
any oil or chemical leakage. Moreover, regular inspection should be conducted
to maintain the status of the equipment to prevent any oil leakage and to ensure
that maintenance works are carried out in roofed, paved and confined works area
only.
l
On-site waste sorting
should be provided properly and dispose containers and cleared oil stain as
chemical waste accordingly
Landscape and
Visual Impact
l
No specific observation was identified in the
reporting month.
