The
proposed widening of Tolo Highway and Fanling Highway between Island House Interchange and Fanling (the Project) is a Designated Project under the
Environmental Impact Assessment Ordinance (Cap. 499) (EIAO) and is governed by an Environmental Permit (EP-324/2008)(EP) issued by EPD
on 23 December 2008.
Subsequently, EPD issued a Variation of Environmental Permit (EP-324/2008/A)
(VEP) on 31 January 2012.
The
Project aims to widen Tolo
Highway and Fanling Highway to dual 4-lane
carriageway in order to alleviate the current traffic congestion problems and
to cope with the increasing transport demands to and from the urban areas and
also cross boundary traffic.
The
construction works for this Project will be delivered in 2 stages i.e. Stage 1
(between Island House Interchange and Tai Hang) and Stage 2 (between Tai Hang
and Wo Hop Shek Interchange). The construction works
of Stage 1 were commenced on 23 November 2009 and will tentatively be completed
in January 2014; while construction programme of Stage 2 is currently under
review. This report focuses on Stage 1 of the Project only.
The
construction phase of Stage 1 under the EP and the Environmental Monitoring and
Audit (EM&A)
programme for Stage 1 of the Project commenced on 23 November 2009. The impact
environmental monitoring and audit includes air quality and noise monitoring.
This report documents the
findings of EM&A works conducted in the period between 1 and 30 November 2013.
As informed by the Contract
1 Contractor (China State Construction Engineering
(Hong Kong) Ltd.),
construction activities in the reporting period were:-
-
Temporary shoring, sheetpiling and excavation
-
At-grade road construction
-
Widening and demolition of central
dividers
-
Retaining wall construction
-
Noise barrier footing construction
-
Noise barrier panels installation
-
Asphalt laying
-
Installation of Drainage Pipes
-
Modification of Edge coping
The
construction works carried out by the
Contract 2 Contractor (Gammon Construction Ltd.) in the reporting period were:-
-
Condition survey of existing
structures
-
Setting up the temporary
traffic arrangement
-
Excavation of trial trenches to
locate existing utilities
-
Construction of haul road
-
Construction of concrete
profile barrier and beam barrier
-
Construction of Pilecap / Spread footing of Noise Barrier / Semi Noise
Enclosure
-
Slope works, including
installation of soil nails
-
NTHA mitigation works
-
Construction of retaining walls
-
Noise barrier construction
-
Modification of existing bridge
structures
-
Entrusted watermains
works
-
Sewer Installation
-
Road and drainage works
-
Landscaping works
There was no
reporting change required in the reporting month.
Breaches of Action and Limit Levels
for Air Quality
No exceedance of Action and Limit Level
was recorded for 1-hour and 24-hour TSP monitoring in the reporting month.
Breaches of Action and Limit Levels
for Noise
No Action Level exceedance of construction
noise was recorded in the reporting month since no noise complaints related to 0700 – 1900 hours on normal
weekdays was received and followed by the Environmental Team in the reporting
month.
No Limit Level exceedance
of construction noise was recorded in the reporting month.
Complaint, Notification of Summons
and Successful Prosecution
There was one (1) complaint (including one (1) noise
related complaint) received on 4 November 2013 and followed up by the Environmental
Team in November 2013. The complaint is still under investigation in November
2013and the investigation result will be reported in the next Monthly EM&A
Report (December 2013).
No notification of summons and successful prosecution
was received in the reporting month.
Future Key Issues
Key issues to be considered in the coming month included:-
- Properly
store and label oils and chemicals on site;
- Chemical,
chemical waste and waste management;
- Collection of
construction waste should be carried out regularly;
- Site runoff
should be properly collected and treated prior to discharge;
- Properly
maintain all drainage facilities and wheel washing facilities on site;
- Exposed
slopes should be covered up properly if no temporary work will be conducted;
- Suppress dust
generated from excavation, breaking and drilling activities,
haul road traffic and grout mixing;
- Quieter
powered mechanical equipment should be used;
- Closely check
and replace the sound insulation materials wrapped at the concrete breaker tip regularly;
- Better
scheduling of construction works to minimize noise nuisance; and
- Tree
protective measures for all retained trees should be well maintained.
1.1.1.
Tolo Highway and Fanling Highway are expressways
in the North East New Territories connecting Sha Tin,
Tai Po and Fanling. These highways form a vital part
of the strategic Route 9, which links other major strategic routes to Shenzhen.
At present, this section of Route 9 is dual 3-lane carriageway. However, at
several major interchanges along this section of Route 9, the highway is only
dual-2 lane. Severe congestion is a frequent occurrence during peak periods,
particularly in the Kowloon bound direction.
1.1.2.
The objective of the Project
“Widening of Tolo Highway / Fanling
Highway between Island House Interchange and Fanling”
is to widen Tolo Highway and Fanling
Highway to dual 4-lane carriageway in order to alleviate the current traffic
congestion problems and to cope with the increasing transport demands to and
from the urban areas and also cross boundary traffic.
1.1.3.
The Project is a designated
project and is governed by an Environmental Permit (EP-324/2008)(EP) issued by EPD on 23 December 2008. Subsequently,
EPD issued a Variation of Environmental Permit (EP-324/2008/A) (VEP) on 31
January 2012.
1.1.4.
The scope of the Project
comprises mainly:-
|
(i)
|
Widening
of a 5.7 km section of Tolo Highway and 3.0 km
section of Fanling Highway between Island House
Interchange and Wo Hop Shek Interchange from the
existing dual 3-lane to dual 4-lane, including construction of new vehicular
bridges;
|
|
(ii)
|
Widening
of interchange sections at Island House Interchange, Tai Po North
Interchange, and Lam Kam Road Interchange from dual 2-lane to dual 3-lane,
except Sha Tin bound carriageway at Tai Po North
Interchange, which is widened from 3-lane to 4-lane, including realignment of
various slip roads;
|
|
(iii)
|
Modification
and reconstruction of highways, vehicular bridges, underpasses and
footbridges.
|
1.1.5.
The construction works for this
Project will be delivered in 2 stages i.e. Stage 1 (between Island House
Interchange and Tai Hang) and Stage 2 (between Tai Hang and Wo
Hop Shek Interchange). The construction works of Stage 1 commenced on 23
November 2009 and will tentatively be completed in January
2014; while the construction
programme of Stage 2 is currently under review. This report focuses on Stage 1 of the Project only.
1.1.6.
The construction works for Stage
1 of the Project will be implemented under 2 works contracts (Contract 1 and
Contract 2). Contract 1 covers the
section of Tolo Highway between Island House
Interchange and Ma Wo, Contract 2 covers the section of Tolo
Highway between Ma Wo and Tai Hang.
1.1.7.
Hyder-Arup-Black and Veatch Joint Venture (HABVJV) are appointed by Highways
Department (HyD) as the consultants for the design
and construction assignment for the Tolo project
under Agreement No. CE 58/2000 Supplementary Agreement No. 3 (SA3) (i.e. the
Engineer for the Contracts).
1.1.8.
China State Construction
Engineering (Hong Kong) Ltd. (CSHK) was commissioned as the Contractor of
Contract 1 of Stage 1 of the Project, while Gammon Construction Limited (GCL)
was commissioned as the Contractor of Contract 2 of Stage 1 of the Project.
1.1.9.
AECOM Asia Co. Ltd. was employed
by HyD as the Environmental Team (ET) to undertake
the Environmental Monitoring and Audit
(EM&A) works
for Stage 1 of the Project and Mott MacDonald Hong Kong Ltd. acts as the
Independent Environmental Checker (IEC) for the Contracts.
1.1.10.
The construction phase of Stage 1
under the EP commenced on 23 November 2009.
1.1.11.
According to the updated EM&A Manual of Stage 1 of the Project, there is a need
of an EM&A programme including air quality and
noise monitoring. The EM&A programme for Stage 1
of the Project commenced on 23 November 2009.
1.2.1
This is the forty-ninth monthly EM&A Report
under the Agreement No. CE 20/2009 (EP) - Widening of Tolo Highway between Island House Interchange and Tai Hang
– Investigation. This report
presents a summary of the environmental monitoring and audit works, list of
activities and mitigation measures proposed by the ET for Stage 1 of the
Project in November 2013.
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 of Stage 1,
Contract 1
(Hyder-Arup-Black & Veatch Joint
Venture)
|
Chief Resident Engineer /TOLO1
|
James Tsang
|
9038 8797
|
26674000
|
|
ER of Stage 1,
Contract 2
(Hyder-Arup-Black & Veatch Joint
Venture)
|
Chief Resident Engineer /TOLO2
|
Paul Appleton
|
9097 5833
|
2653 2348
|
|
IEC of Stage 1
(Mott MacDonald Hong
Kong Limited)
|
Independent Environmental
Checker
|
Terence Kong
|
2828 5919
|
2827 1823
|
|
Contractor of
Stage 1, Contract 1
(China State
Construction Engineering (Hong Kong) Limited)
|
Site Agent
|
Eddie Tang
|
9863 7686
|
2667 5666
|
|
Environmental Officer
|
Michael Tsang
|
9277 4956
|
2667 5666
|
|
M L Lam
|
9489 4641
|
2667 5666
|
|
Contractor of
Stage 1, Contract 2
(Gammon Construction Limited)
|
Site Agent
|
John Chan
|
3126 1202
|
2559 3410
|
|
Environmental Officer
|
Thomson Chang
|
9213 6569
|
2559 3410
|
|
Crispin Ao
|
9223 8773
|
2559 3410
|
|
Ao Ho Fo
|
9220 5848
|
2559 3410
|
|
ET of Stage 1
(AECOM Asia Company Limited)
|
ET Leader
|
Y T Tang
|
3922 9393
|
3922 9797
|
1.4.1 The construction
phase of Stage 1 under the EP commenced on 23 November 2009.
1.4.2 Details of the construction works carried out by the
Contract 1 Contractor (China State Construction Engineering (Hong Kong) Ltd.)
in this reporting period are listed below:-
-
Temporary shoring, sheetpiling and excavation
-
At-grade road construction
-
Widening and demolition of central
dividers
-
Retaining wall construction
-
Noise barrier footing construction
-
Noise barrier panels installation
-
Asphalt laying
-
Installation of Drainage Pipes
-
Modification of Edge coping
1.4.3 Details of the construction works carried out by the
Contract 2 Contractor (Gammon Construction Ltd.) in this reporting period are
listed below:-
-
Condition survey of existing
structures
-
Setting up the temporary
traffic arrangement
-
Excavation of trial trenches to
locate existing utilities
-
Construction of haul road
-
Construction of concrete
profile barrier and beam barrier
-
Construction of Pilecap / Spread footing of Noise Barrier / Semi Noise
Enclosure
-
Slope works, including
installation of soil nails
-
NTHA mitigation works
-
Construction of retaining walls
-
Noise barrier construction
-
Modification of existing bridge
structures
-
Entrusted watermains
works
-
Sewer Installation
-
Road and drainage works
-
Landscaping works
1.4.4 The Construction Programmes
are shown in Appendix B.
1.4.5 The general layout plan of the Project site showing
the contract areas is shown in Figure 1.1.
1.4.6 The environmental mitigation measures implementation
schedule are presented in Appendix C.
1.5.1 The EM&A programme
required environmental monitoring for air quality, noise and environmental site
inspections for air quality, water quality, noise, waste management, ecology,
and landscape and visual impact. 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 updated EM&A Manual,
baseline 1-hour and 24-hour TSP levels at 4 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 D.
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 updated 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
|
Equipment
|
Brand and Model
|
|
Portable direct reading dust meter
(1-hour TSP)
|
Sibata Digital Dust Monitor (Model
No. LD-3 and LD-3B)
|
|
High Volume Sampler
(24-hour TSP)
|
Tisch Total Suspended Particulate
Mass Flow Controlled High Volume Air Sampler (Model No. TE-5170
& GMW-2310)
|
2.3.1
Monitoring locations AM2 and AM3 were set up at
the proposed locations in accordance with updated EM&A Manual. However, for
monitoring locations: Dynasty View and Tai Po Garden, proposed in the updated
EM&A Manual, as approval could not be obtained from the owner’s corporation
of the premises, baseline and impact air quality monitoring was conducted at 13
Ha Wun Yiu (AM1) and Tai Kwong
Secondary School (AM4) respectively. The monitoring station at 13 Ha Wun Yiu (AM1) was relocated to Fan Sin Temple, 3 Sheung Wun Yiu (AM1A) in February
2010. Also, the monitoring station at Tai Kwong
Secondary School (AM4) was relocated to 168 Shek Kwu
Lung Village (AM4A) in September 2011.
2.3.2
Figure 2.1 shows the locations of monitoring
stations. Table 2.2 describes the details of the monitoring stations.
Table 2.2 Locations
of Impact Air Quality Monitoring Stations
|
Monitoring Station
|
Location
|
Description
|
|
AM1A
|
3 Sheung Wun Yiu
|
Ground
floor at the boundary outside Fan Sin Temple
|
|
AM2
|
12
Shan Tong New Village
|
Ground
floor outside the premises
|
|
AM3
|
Riverain Bayside
|
Roof
of the switch room
|
|
AM4A
|
168 Shek Kwu Lung Village
|
Roof
of the switch room
|
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
|
Parameter
|
Frequency and Duration
|
|
1-hour TSP
|
Three times every 6 days while the highest dust impact was
expected
|
|
24-hour TSP
|
Once every 6 days
|
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.
(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 aluminum 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 1.1 m3/min, and complied
with the range specified in the updated 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)
5-point calibration of the HVS
was conducted using TE-5025A
Calibration Kit prior to the commencement of baseline monitoring. Bi-monthly
5-point calibration of the HVS will be carried out during impact monitoring.
(iii)
Calibration certificate of the
HVSs are provided in Appendix E.
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 E.
(ii)
1-hour validation checking of the
TSP meter against HVS is carried out yearly at the air quality monitoring
locations.
2.6
Monitoring Schedule for the
Reporting Month
2.6.1
The schedule for environmental monitoring in November
2013 is provided in Appendix F.
2.7.1
The baseline condition of air quality in the
Project site was reviewed in October and November 2009. A baseline monitoring
of air quality, in terms of 1-hour Total Suspended Particulates (TSP) and
24-hour TSP, was carried out from 20 October 2009 to 4 November 2009 for 14
days. The baseline monitoring report was submitted by ETL and approved by the
ER and the IEC on 9 November 2009. Action Levels for air quality were
established and are summarized in Table 2.4, Table 2.5 and Appendix D.
2.8.1
The monitoring results for 1-hour TSP and
24-hour TSP are summarized in Table 2.4 and 2.5 respectively. Detailed impact
air quality monitoring results are presented in Appendix G.
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)
|
|
AM1A
|
82.1
|
78.8 – 84.1
|
302.1
|
500
|
|
AM2
|
82.0
|
76.9 – 85.5
|
301.9
|
500
|
|
AM3
|
81.7
|
78.5 – 84.5
|
301.9
|
500
|
|
AM4A
|
82.3
|
77.3 – 86.1
|
302.3
|
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)
|
|
AM1A
|
52.9
|
42.9 – 62.2
|
176.6
|
260
|
|
AM2
|
50.5
|
34.5 – 93.2
|
178.6
|
260
|
|
AM3
|
24.3
|
7.3 – 37.0
|
193.1
|
260
|
|
AM4A
|
42.6
|
26.0 – 58.2
|
198.5
|
260
|
2.8.2
The major dust source in the reporting period
included construction activities from Stage 1 of the Project, as well as nearby
traffic emissions.
2.8.3
All 1-hour and 24-hour TSP results were below
the Action and Limit Level at all monitoring locations in the reporting month.
2.8.4
The event action plan is annexed in Appendix J.
2.8.5
Weather information including wind speed and
wind direction is annexed in Appendix H. The information was obtained from Hong
Kong Observatory Sha Tin and Tai Mei Tuk Automatic Weather Station. As some of the weather data
in November 2013 from the Tai Mei Tuk Automatic
Weather Station were missing, the weather data from Tai Po Automatic Weather
Station in November 2013 are included in Appendix H for supplementary
purpose.
3.1.1
In accordance with the EM&A Manual,
impact noise monitoring was conducted for at least once per week during the
construction phase of Stage 1 of the Project. The Action and Limit level of the noise monitoring is provided in Appendix D.
3.2
Monitoring Equipment
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
|
Equipment
|
Brand and Model
|
|
Integrated
Sound Level Meter
|
Rion NL-31 / B&K 2238 / B&K 2250-L
/ B&K 2270
|
|
Acoustic
Calibrator
|
Rion NC-73
|
3.3.1
Monitoring stations NM3, NM6 and NM7 were set
up at the proposed locations in accordance with updated EM&A Manual. However,
for monitoring locations: Tai Po Garden (NM1), Dynasty View (NM2), Hong Kong
Teachers’ Association Lee Heng Kwei
Secondary School (NM4) and Grand Palisades (NM5), proposed in the updated
EM&A Manual, impact noise monitoring was conducted at alternative
monitoring locations, as approval of access could not be obtained from the
owner’s corporation of the premises or the principal of the education
institutes. The monitoring station at Tai Kwong
Secondary School (NM1) was relocated to 168 Shek Kwu
Lung Village (NM1A) in September 2011.
3.3.2
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
|
Monitoring Station
|
Location
|
Description
|
|
NM1A
|
168 Shek Kwu
Lung Village
|
1m from the exterior wall of the
village house
|
|
NM2
|
38 Ha Wun
Yiu
|
1.2m from the ground floor free-field
of the village house
|
|
NM3
|
Wong Shiu Chi Middle School
|
1m from the exterior of the roof
top façade of the New Wing
|
|
NM4
|
Uptown Plaza
|
1m from the exterior of the roof top
façade of Block 4
|
|
NM5
|
The Paragon
|
1m from the exterior of the roof
top façade of the club house
|
|
NM6
|
PLK Tin Ka Ping Primary School
|
1.2m ground floor free-field near the
entrance
|
|
NM7
|
Riverain Bayside
|
1m from the exterior of the roof
façade of the switch room
|
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
|
Parameter
|
Frequency and Duration
|
|
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)
Façade measurements were made at
all monitoring locations, except monitoring stations NM2 and NM6.
(b)
The sound level meter was set on
a tripod at a height of 1.2 m
above the ground for free-field measurements at NM2 and NM6.
(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 E.
3.6.1
The schedule for environmental monitoring in November
2013 is provided in Appendix F.
3.7.1
The monitoring results for construction noise
are summarized in Table 3.4 and the monitoring data is provided in Appendix I.
Table 3.4 Summary of Construction 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)
|
|
NM1A
|
60.0
|
47.9 – 62.8
|
75
|
|
NM2
|
63.7*
|
62.3 – 65.1*
|
75
|
|
NM3
|
61.3
|
56.5 – 62.9
|
70#
|
|
NM4
|
63.0
|
62.0 – 64.3
|
75
|
|
NM5
|
60.3
|
58.0 – 61.7
|
75
|
|
NM6
|
62.3*
|
59.1 – 64.4*
|
70#
|
|
NM7
|
59.0
|
57.7 – 61.1
|
75
|
*+3dB(A) Façade correction included
# Limit Level of 70dB(A) applies
to education institutes while 65dB(A) applies during school examination period.
3.7.2
No noise complaint related to 0700 – 1900 hours
on normal weekdays was received and
followed up by the Environmental Team in the reporting
period. Hence, no Action Level exceedance was
recorded.
3.7.3
No noise monitoring result exceeding the Limit
Level was recorded at all monitoring stations in the reporting month.
3.7.4
Major noise sources during the noise monitoring
included construction activities of Stage 1 of the Project and nearby traffic
noise and general school activities.
3.7.5
The event action plan is annexed in Appendix J.
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 Stage 1 of the Project. In the reporting month,
4 site inspections were carried out on 6, 13, 20 and 27 November 2013 for Contract 1 of the Project, and 4 site inspections for
Contract 2 of the Project were carried out on 7, 14, 21 and 28 November 2013.
4.1.2
The environmental site inspections summaries
are provided in Appendix K.
4.1.3
Particular observations during the site inspections for
Contract 1 are described below:
Air Quality
4.1.4
No adverse observation was identified in the
reporting month.
Noise
4.1.5
No adverse observation was identified in the
reporting month.
Water Quality
4.1.6
No adverse observation was identified in the
reporting month.
Chemical and Waste
Management
4.1.7
No adverse observation was identified in the
reporting month.
Landscape and Visual
Impact
4.1.8
No adverse observation was identified in the
reporting month.
Miscellaneous
4.1.9
No adverse observation was identified in the
reporting month.
4.1.10 Particular observations and reminder during the site inspections for
Contract 2 are described below:
Air Quality
4.1.11
No adverse observation was identified in
the reporting month.
Noise
4.1.12
No adverse observation was identified in the
reporting month.
Water Quality
4.1.13
The Contractor was reminded to
provide a drip tray to hold the oil can or remove the oil can.
4.1.14
Oil leakage was observed under
the generator. The Contractor was reminded to clear the oil stain, and identify
and eliminate the source of leakage.
Chemical and Waste Management
4.1.15
The Contractor was reminded to cover the
stockpiles at Gate 7B.
4.1.16
The Contractor was reminded to clear the
general refuse at Bridge 13.
Landscape and Visual
Impact
4.1.17 No adverse observation was identified in the reporting month.
Miscellaneous
4.1.18
No adverse observation was identified in the
reporting month.
4.2
Advice on the Solid and
Liquid Waste Management Status
4.2.1
The Contract 1 Contractor (CSHK) and the
Contract 2 Contractor (GCL) are registered as chemical waste producers for
Stage 1 of the Project. C&D material sorting was carried out on site.
Sufficient numbers of receptacles were available for general refuse collection.
4.2.2
As advised by the Contract 1 Contractor (CSHK),
326m3 of inert C&D materials was disposed of to the public
fill at Tuen Mun 38 (of which 122m3 was broken concrete), while
130m3 of general refuse was disposed of at the NENT landfill. 107kg of paper/cardboard packaging, 3,133kg of plastics and 36,741kg of metals were collected by recycling contractors in the reporting
month. 1,106m3 and 1,133m3 of inert
C&D materials were reused on site and reused in NENT for backfilling
purpose respectively. 0kg of chemical waste was collected by the licensed
contractor in the reporting period.
4.2.3
As advised by the Contract 2 Contractor (GCL), 200m3 of inert C&D materials was disposed of to Tuen Mun 38 and 215m3 of general refuse was disposed of to the NENT landfill in
the reporting period. No paper/cardboard packaging, plastics or metals was collected by the recycling contractors in the reporting month. Besides, no
chemical waste was collected by the licensed contractor in
the reporting period.
4.2.4
The Contract 1 Contractor (CSHK) and the
Contract 2 Contractor (GCL) are advised to maintain on site waste sorting and
recording system and maximize reuse / recycle of C&D wastes.
4.3
Environmental Licenses and
Permits
4.3.1 The environmental licenses and permits for Stage 1 of the 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
|
License/ Permit
|
License or Permit No.
|
Valid Period
|
License/ Permit Holder
|
Remarks
|
|
From
|
To
|
|
EIAO
|
Environmental
Permit
|
EP-324/2008/A
|
31/01/2012
|
N/A
|
HyD
|
Tolo Highway/Fanling Highway between Island House
Interchange and Ma Wo
|
|
WPCO
|
Discharge
License (Office)
|
WT00005096-2009
|
03/12/2009
|
31/12/2014
|
CSHK
|
Discharge
at Site Office
|
|
Discharge
License (Site)
|
WT00005445-2009
|
15/12/2009
|
31/12/2014
|
CSHK
|
Discharge
of Construction Runoff
|
|
Discharge
License (Office)
|
WT00006782-2010
|
25/06/2010
|
30/06/2015
|
GCL
|
Discharge
at Site Office
|
|
Discharge
License (Site)
|
WT00007162-2010
|
09/08/2010
|
31/07/2015
|
GCL
|
Discharge
of Construction Runoff
|
|
WDO
|
Chemical
Waste Producer Registration
|
5213-727-C3249-46
|
25/09/2009
|
N/A
|
CSHK
|
Chemical
waste produced in Contract HY/2008/09
|
|
5213-722-G2347-18
|
18/05/2010
|
N/A
|
GCL
|
Chemical
waste produced in Contract HY/2009/08
|
|
WDO
|
Billing Account for Disposal of
Construction
Waste
|
7009328
|
08/09/2009
|
N/A
|
CSHK
|
Waste
disposal in Contract HY/2008/09
|
|
7010320
|
02/03/2010
|
N/A
|
GCL
|
Waste
disposal in Contract HY/2009/08
|
|
NCO
|
Construction
Noise Permit
|
GW-RN0417-13
|
21/07/2013
|
17/01/2014
|
CSHK
|
Construction works at Island
House Interchange
|
|
GW-RN0422-13
|
29/07/2013
|
31/12/2013
|
CSHK
|
Road Paving on Tolo Highway at Island House
Interchange
|
|
GW-RN0468-13
|
19/08/2013
|
23/01/2014
|
CSHK
|
Routine Road Maintenance
|
|
GW-RN0479-13
|
21/08/2013
|
15/11/2013
|
CSHK
|
Lifting Operation at W20A
|
|
GW-RN0513-13
|
07/09/2013
|
03/11/2013
|
CSHK
|
Road Marking Alternation
near Sign Gantry G14
|
|
GW-RN0524-13
|
04/09/2013
|
15/11/2013
|
CSHK
|
Sign Gantry at Tolo Highway between Yuen Chau Tsai and Ma Wo
|
|
GW-RN0525-13
|
16/09/2013
|
30/11/2013
|
CSHK
|
Stitching Works on Bridge 11
|
|
GW-RN0561-13
|
02/10/2013
|
01/04/2014
|
CSHK
|
Modification of Sign Gantry_G11,
G13, G70, G73, G74, G75 & G76
|
|
GW-RN0564-13
|
28/09/2013
|
22/12/2013
|
CSHK
|
Road Paving Reconstruction
on Tolo Highway (Fanling
Bound) near Shan Tong Road
|
|
GW-RN0566-13
|
25/09/2013
|
30/11/2013
|
CSHK
|
Road Paving Reconstruction
on Slip Road from Tai Po Road-Yuen Chau Tsai
|
|
GW-RN0572-13
|
07/09/2013
|
03/12/2013
|
CSHK
|
Modification of Sign
Gantry_G14, G15, G16, G17, G65, G66, G67 & G68
|
|
GW-RN0582-13
|
06/10/2013
|
22/12/2013
|
CSHK
|
Road Paving for slip road
from Tai Po Road-Yuen Chau Tsai
|
|
GW-RN0584-13
|
05/10/2013
|
24/11/2013
|
CSHK
|
Road Marking Alternation at Tolo Highway near Shan Tong Road
from CH17.0A to CH16.1A
|
|
GW-RN0606-13
|
13/10/2013
|
24/11/2013
|
CSHK
|
Road Paving & Road
Marking Works at Yuen Shin Road near Tolo Highway
|
|
GW-RN0607-13
|
19/10/2013
|
22/12/2013
|
CSHK
|
Road Paving on Tolo Highway between Ma Wo and
NLKRB (Shatin Bound)
|
|
GW-RN0614-13
|
19/10/2013
|
22/12/2013
|
CSHK
|
Road Paving on North Bound
of Tolo Highway at Island House Interchange
|
|
GW-RN0620-13
|
19/10/2013
|
22/12/2013
|
CSHK
|
Road Paving Reconstruction
on Tolo Highway (Fanling Bound) Between NB12 and Tat Wan Road
|
|
GW-RN0647-13
|
01/11/2013
|
31/12/2013
|
CSHK
|
Carrying out construction
works within MTRC's tracks protection zone
|
|
GW-RN0693-13
|
16/11/2013
|
22/12/2013
|
CSHK
|
Road Paving on Tolo Highway at Island House Interchange (Shatin Bound)
|
|
GW-RN0703-13
|
19/11/2013
|
28/12/2013
|
CSHK
|
Installation of Noise Barrier
on Kwong Fuk West Viaduct
|
|
GW-RN0707-13
|
19/11/2013
|
28/12/2013
|
CSHK
|
Road Paving Reconstruction on Tolo
Highway (Fanling & Shatin
Bound) near Shan Tong Road
|
|
GW-RN0710-13
|
21/11/2013
|
24/12/2013
|
CSHK
|
Sign Gantry at Tolo Highway between Yuen
Chau Tsai and Ma Wo
|
|
GW-RN0726-13
|
27/11/2013
|
31/12/2013
|
CSHK
|
Concreting Works on Tolo Highway (Fanling Bound) near Tat Wan Road
|
|
GW-RN0284-13
|
15/05/2013
|
02/11/2013
|
GCL
|
Construction of B15A
|
|
GW-RN0309-13
|
27/06/2013
|
26/12/2013
|
GCL
|
Tai Po Tai Wo Road Uphill Northbound
|
|
GW-RN0405-13
|
25/07/2013
|
24/01/2014
|
GCL
|
Northbound near CH.18.39 - 19.1 near Shek Link Road
|
|
GW-RN0484-13
|
02/09/2013
|
31/12/2013
|
GCL
|
Renewal of GW-RN0091-13
Tolo Highway and Fanling Highway near Tai Po Tai Wo
Road, Lam Kam Interchange & Tai Wo Service Road
West
|
|
GW-RN0519-13
|
15/09/2013
|
09/03/2014
|
GCL
|
Renewal of GW-RN0351-13
Tolo Highway near Ma Wo Village
|
|
GW-RN0530-13
|
03/10/2013
|
02/02/2014
|
GCL
|
Renewal of GW-RN0194-13
Tolo Highway near Tai Po Tau Raw Water Pumping
Station
|
|
GW-RN0549-13
|
17/09/2013
|
30/11/2013
|
GCL
|
Erection and dismantle of Sign Gantry
|
|
GW-RN0551-13
|
19/09/2013
|
03/12/2013
|
GCL
|
Stitching Construction of B12B
|
|
GW-RN0575-13
|
27/09/2013
|
10/12/2013
|
GCL
|
Erection of Sign Gantry at Lam Kam Road Flyover CH. 20.2 to 20.3
|
|
GW-
RN608-13
|
12/10/2013
|
21/12/2013
|
GCL
|
Renewal of GW-RN0473-13
Dismantling of Overhead Falsework at NLKP6 to NLKP7
|
|
GW-RN0610-13
|
16/10/2013
|
10/12/2013
|
GCL
|
Road Diversion at Tolo Highway South Bound
CH.18.1-18.7
|
|
GW-
RN613-13
|
22/10/2013
|
24/12/2013
|
GCL
|
Renewal of GW-RN0362-13
Dismantling of Overhead Falsework at NLKP8 to
NLKP10
|
|
GW-
RN617-13
|
18/10/2013
|
31/12/2013
|
GCL
|
Road
Diversion at Tolo Highway CH19.4 to 19.9
|
|
GW-RN0652-13
|
10/11/2013
|
29/12/2013
|
GCL
|
Road Diversion at Tolo Highway CH18.1 - 18.4B
Fanling Bound near Ma Wo
|
|
GW-RN0665-13
|
10/11/2013
|
29/12/2013
|
GCL
|
Road Diversion at Tolo Highway CH19.4 to
19.9
|
|
GW-RN0686-13
|
17/11/2013
|
29/12/2013
|
GCL
|
Road diversion at Tolo Highway CH18.4-18.6,
CH19.3-19.5 and CH20-20.2 Fanling Bound near Ma Wo
|
|
GW-RN0695-13
|
17/11/2013
|
12/05/2014
|
GCL
|
General work and asphalt paving at Tolo
Highway near Shek Kwu Lung and Ma Wo (CH18.1 - 19.2)
|
|
GW-RN0716-13
|
28/11/2013
|
31/12/2013
|
GCL
|
Dismantle of overhead falsework between
NLKP8 to NLKP10
|
4.4.1
In response to the site audit findings, the Contractors
carried out corrective actions.
4.4.2
A summary of the Implementation Schedule of
Environmental Mitigation Measures (EMIS) is presented in Appendix C. Most of
the necessary mitigation measures were implemented properly.
4.5
Summary of Exceedances of the Environmental Quality Performance Limit
4.5.1
All 1-hour and 24-hour TSP monitoring results
complied with the Action / Limit Levels in the reporting period.
4.5.2
For construction noise, no Action and Limit
Level exceedance was recorded at all monitoring
stations in the reporting period.
4.6
Summary of Complaints,
Notification of Summons and Successful Prosecutions
4.6.1
The Environmental Complaint Handling Procedure
is annexed in Figure 4.1.
4.6.2
No
complaint from previous reporting months were followed up by the Environmental
Team in the reporting period.
4.6.3
There was one (1) complaint (including one (1)
noise related complaint) received on 4 November 2013 and followed up by the
Environmental Team in November 2013. The complaint is still under investigation
in November 2013and the investigation result will be reported in the next
Monthly EM&A Report (December 2013).
4.6.4
EPD referred a noise complaint from a resident
living near Uptown Plaza at Tai Po. The complainant expressed that the
construction work between late-night hours on 2 November and early morning of 3
November at[n1] [n2]
Tolo Highway disturbed the resident’s sleep.
4.6.5
No new notification of summons and prosecution
was received in the reporting period.
4.6.6
Statistics on complaints, notifications of
summons and successful prosecutions are summarized in Appendix L.
5
FUTURE
KEY ISSUES
5.1.1
The major construction works for Contract 1 in December 2013 will be:-
-
Temporary shoring, sheetpiling and excavation
-
At-grade road construction
-
Retaining wall construction
-
Noise barrier footing construction
-
Noise barrier panels installation
-
Asphalt laying
-
Installation of drainage pipes
-
Modification of edge coping
5.1.2
The major construction works for Contract 2 in December 2013 will be:-
-
Condition survey of existing
structures
-
Setting up the temporary
traffic arrangement
-
Excavation of trial trenches to
locate existing utilities
-
Construction of haul road
-
Construction of concrete
profile barrier and beam barrier
-
Construction of Pilecap / Spread footing of Noise Barrier / Semi Noise
Enclosure
-
Slope works, including
installation of soil nails
-
NTHA mitigation works
-
Construction of retaining walls
-
Noise barrier construction
-
Modification of existing bridge
structures
-
Entrusted watermains
works
-
Sewer Installation
-
Road and drainage works
-
Landscaping works
5.2
Key Issues for the Coming
Month
5.2.1
Key issues to be considered in December 2013:-
-
Properly store and label oils and chemicals on site;
-
Chemical, chemical waste and waste management;
-
Collection of construction waste should be carried out
regularly;
-
Site runoff should be properly collected and treated prior
to discharge;
-
Properly maintain all drainage facilities and wheel washing
facilities on site;
-
Exposed slopes should be covered up properly if no temporary
work will be conducted;
-
Suppress dust generated from excavation, breaking and
drilling activities, haul road traffic and
grout mixing process;
-
Quieter powered mechanical equipment should be used;
-
Closely check and replace the sound insulation materials
wrapped at the concrete breaker tip
regularly;
-
Better scheduling of construction works to minimize noise
nuisance; and
- Tree protective
measures for all retained trees should be well maintained.
5.3
Monitoring Schedule for the
Coming Month
5.3.1
The tentative schedule for environmental
monitoring in December 2013 is provided in Appendix
F.
6.1.1
The construction phase and EM&A programme of Stage 1 of the project commenced on 23
November 2009.
6.1.2
1-hour TSP, 24-hour TSP and noise monitoring
were carried out in the reporting period.
6.1.3
All 1-hour and 24-hour TSP monitoring results
complied with the Action / Limit Levels in the reporting period.
6.1.4
No Action and Limit Level exceedance
for construction noise was recorded at all monitoring stations in the reporting
month.
6.1.5
Environmental site inspection was carried out 8 times in November 2013. Recommendations on remedial actions were
given to the Contractors for the deficiencies identified during the site audits.
6.1.6
No
complaint from previous reporting months were followed up by the Environmental
Team in the reporting period.
6.1.7
There was one (1) complaint (including one (1)
noise related complaint) received on 4 November 2013 and followed up by the
Environmental Team in November 2013. The complaint is still under investigation
in November 2013and the investigation result will be reported in the next
Monthly EM&A Report (December 2013).
6.1.8 No new notification
of summons and prosecution was received in the reporting period.
6.2.1
According to the
environmental site inspections performed in the reporting month, the following
recommendations were provided:-
Air Quality Impact
l The soil stockpiles
should be properly covered.
l The
grouting station should be properly sheltered as one of the dust control
measures
Construction Noise Impact
l Properly erect the
temporary noise barriers in accordance with the Environmental Permit
requirement.
l Noisy operations
should be oriented to a direction away from sensitive receivers as far as
possible.
l Sound insulation
materials shall be wrapped at the breaker tip for concrete breaking works.
Water Quality Impact
l Preventive measures should
be implemented to avoid the spread of mud trails on the public road.
l Silty effluent should be treated/desilted before
discharged. Untreated effluent should be prevented from entering public drain
channel.
l Proper drainage
channels/bunds should be provided at the site boundaries to collect/intercept
the surface run-off from works areas.
l Stagnant water
accumulated within works area should be removed.
Chemical and Waste Management
l C&D materials and
wastes, general refuse should be sorted properly and removed timely.
l All chemical
containers and oil drums should be properly stored.
l All plants and
vehicles on site should be properly maintained to prevent oil leakage.
l All drain holes of
the drip trays utilized within works areas should be properly plugged to avoid
any oil leakage.
l Oil stains on soil
surface and empty chemical containers should be cleared and disposed of as
chemical waste.
l Drip tray should be provided to
prevent oil leakage.
l Only the recycling
materials should be dumped into the appropriate recycling bins.
Landscape and Visual Impact
l All retained trees
should be properly fenced off at the works area.
