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
December 2013; 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 September 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
-
Installation
of soil nails
-
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
-
Initial
and record survey
-
Survey
Setting out works for slopes and 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 wall and associated mini-piles
-
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 ¨C 1900 hours on normal weekdays was received and followed
by 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
No follow-up complaint, new complaint, 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 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.
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 December 2013; while 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.
1.1.1
This is the forty-seventh monthly
EM&A Report under the Agreement No. CE 20/2009 (EP) -
Widening of Tolo Highway between Island House
Interchange and Tai Hang ¨C 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 September 2013.
1.1.1
1.1.1
1.1.1
1.2.1
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
-
Installation
of soil nails
-
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
-
Initial
and record survey
-
Survey
Setting out works for slopes and 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 wall and associated mini-piles
-
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 ¡À2.5% 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 ¡ãC
and not variable by more than ¡À3 ¡ãC;
the relative humidity (RH) was < 50% and not variable by more than ¡À5%. 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 September 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
|
78.4
|
72.4 ¨C 83.2
|
302.1
|
500
|
|
AM2
|
78.6
|
72.9 ¨C 84.0
|
301.9
|
500
|
|
AM3
|
79.3
|
72.6 ¨C 84.8
|
301.9
|
500
|
|
AM4A
|
79.1
|
73.9 ¨C 86.0
|
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
|
46.3
|
23.9 ¨C 68.1
|
176.6
|
260
|
|
AM2
|
24.8
|
12.2 ¨C 42.7
|
178.6
|
260
|
|
AM3
|
27.7
|
12.8 ¨C 40.7
|
193.1
|
260
|
|
AM4A
|
34.0
|
17.9 ¨C 34.0
|
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 September 2013 from the
Tai Mei Tuk Automatic Weather Station were missing,
the weather data from Tai Po Automatic Weather Station in September 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
|
|
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 ¨C 1900 on normal weekdays; Leq(5-minutes) during restricted hours
i.e. 19:00
¨C 23:00 and 23:00 ¨C 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 September 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
|
61.8
|
57.7 ¨C 64.1
|
75
|
|
NM2
|
63.6*
|
65.9 ¨C 61.9*
|
75
|
|
NM3
|
62.2
|
53.3 ¨C 64.3
|
70#
|
|
NM4
|
63.8
|
60.4 ¨C 65.8
|
75
|
|
NM5
|
60.5
|
56.7 ¨C 62.9
|
75
|
|
NM6
|
60.2*
|
56.5 ¨C 62.6*
|
70#
|
|
NM7
|
58.0
|
55.6 ¨C 59.9
|
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
There was no noise
complaint related to 0700 ¨C 1900 hours on
normal weekdays was received and followed
up by 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 4, 11, 18 and 25 September 2013 for Contract 1 of the Project, and 4 site inspections for Contract 2 of
the Project were carried out on 5, 12, 19 and 26 September 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
The
Contractor was reminded to remove the stagnant water within the construction
site at Bridge 11.
Chemical and Waste Management
4.1.7
The
Contractor was reminded to remove the general refuse at Bridge 11.
4.1.8
The
Contractor was reminded to remove the construction waste within the
construction area at Bridge 10.
Landscape and Visual Impact
4.1.9
No adverse observation was
identified in the reporting month.
Miscellaneous
4.1.10
No adverse observation was
identified in the reporting month.
4.1.11 Particular
observations and reminder during
the site inspections for Contract 2 are described below:
Air Quality
4.1.12
The Contractor was reminded to cover the exposed soil
stockpile at Lam Kam Bridge P2.
4.1.13
The
Contractor was reminded to cover the cement bags with impervious sheet at Link
Bridge 1.
Noise
1.1.1
No adverse observation was
identified in the reporting month.
1.1.1
1.1.1
1.1.1
4.1.14
Water
Quality
4.1.15
The Contractor was reminded to remove the standing water
held within the drip tray at Link Bridge 1.
Chemical
and Waste Management
4.1.16
The Contractor was reminded to remove the general refuse
at NB 30.
4.1.17
The Contractor was reminded to remove the oil drum or
provide a drip tray for holding the oil drum at NB 30.
4.1.18
The Contractor was reminded to provide drip tray for
holding the oil cans at Link Bridge 1.
Landscape and Visual Impact
4.1.19 No
adverse observation was identified in the reporting month.
Miscellaneous
4.1.20
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), 0m3 of inert
C&D material was disposed as public fill to Tuen Mun 38 (of which 0m3 was broken concrete), while 104m3 of general
refuse was disposed
at NENT landfill. 96kg of
paper/cardboard packaging, 2,424kg of
plastics and 0kg of metals were collected
by recycling contractor in the reporting month. 2,137m3 and 688m3 of inert C&D
materials were reused on site and reused in NENT for backfilling
purpose respectively. 0kg of chemical waste was collected by
licensed contractor in the reporting period.
4.2.3
As advised by the Contract 2
Contractor (GCL), 380m3 of inert
C&D material were disposed to Tuen Mun 38 and 290m3 general
refuse was disposed to NENT landfill in the
reporting period. 240kg of
paper/cardboard packaging, 0kg of plastics and 0kg of metals were collected
by recycling contractor in the reporting month. No inert C&D
material was reused on site or reused in NENT for backfilling purpose. Besides, no chemical
waste was collected by 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-RN0226-13
|
24/04/2013
|
23/10/2013
|
CSHK
|
Construction of W4 - NLKRB South
Abutment
|
|
GW-RN0375-13
|
09/07/2013
|
17/09/2013
|
CSHK
|
Erection of Columns of Sign
Gantry & Noise Barrier between Shan Tong Road and Ma Wo
|
|
GW-RN0377-13
|
09/07/2013
|
17/09/2013
|
CSHK
|
Modification of Sign Gantry_G13,
G14, 15, 16, 17, 65, 66, 67 68 & 70
|
|
GW-RN0388-13
|
27/07/2013
|
06/10/2013
|
CSHK
|
Modification of Sign Gantry_G11,
73, 74, 75 & 76
|
|
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-RN0425-13
|
29/07/2013
|
28/09/2013
|
CSHK
|
Installation of Noise Barrier on Tolo Highway at Island House Interchange
|
|
GW-RN0434-13
|
03/08/2013
|
23/09/2013
|
CSHK
|
Road Marking Alternation at SB of
Tolo Highway near King Nga
Court
|
|
GW-RN0444-13
|
06/08/2013
|
28/09/2013
|
CSHK
|
Road Paving on Slip Road from Tolo Highway (Fanling Bound) to
Yuen Shin Road
|
|
GW-RN0453-13
|
11/08/2013
|
29/09/2013
|
CSHK
|
Road Paving & Road Marking
Works at Yuen Shin Road near Tolo Highway
|
|
GW-RN0454-13
|
14/08/2013
|
06/10/2013
|
CSHK
|
Modification of G 12
|
|
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-RN0487-13
|
21/08/2013
|
14/09/2013
|
CSHK
|
Stitching Works on Bridge 11
|
|
GW-RN0507-13
|
28/08/2013
|
31/10/2013
|
CSHK
|
Road Pavement at North Bound of Tolo Highway near The Paragon and Ma Wo
|
|
GW-RN0512-13
|
01/09/2013
|
31/10/2013
|
CSHK
|
Carrying out construction works
within MTRC's tracks protection zone
|
|
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-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-RN0194-13
|
03/04/2013
|
02/10/2013
|
GCL
|
Near
Lam Kam Interchange
Supersede CNP GW-RN0064-13
|
|
GW-RN0235-13
|
19/04/2013
|
16/10/2013
|
GCL
|
Tolo
Highway Northbound near Buddist Tai Kwong Middle
School and Shek Lin Road
|
|
GW-RN0250-13
|
30/04/2013
|
26/10/2013
|
GCL
|
Tolo
Highway Southbound near Parc Versailles
|
|
GW-RN0260-13
|
08/05/2013
|
25/10/2013
|
GCL
|
Slip
Road from Tolo Highway North Bound to Tai Po Tai Wo 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-RN0351-13
|
30/06/2013
|
08/09/2013
|
GCL
|
Tolo Highway near Ma Wo Village
|
|
GW-RN0360-13
|
03/07/2013
|
27/09/2013
|
GCL
|
Renewal
of GW-RN0237-13 Dismantling at Tai Po Tai Wo Road
Uphill
|
|
GW-RN0362-13
|
16/07/2013
|
29/10/2013
|
GCL
|
Renewal of GW-RN0259-13
Dismantling of Overhead Falsework between NLKP8 and
NLKP10
|
|
GW-RN0391-13
|
14/07/2013
|
16/09/2013
|
GCL
|
Lane Shifting at Tolo Highway Northbound for tie-in with NLKRF
|
|
GW-RN0398-13
|
12/07/2013
|
26/09/2013
|
GCL
|
Steel Portal Dismantle at Tai Po
Tai Wo Road Uphill
|
|
GW-RN0405-13
|
25/07/2013
|
24/01/2014
|
GCL
|
Northbound near CH.18.39 - 19.1
near Shek Link Road
|
|
GW-RN0421-13
|
28/07/2013
|
23/09/2013
|
GCL
|
Near CH.18.7 to 20.01
|
|
GW-RN0435-13
|
04/08/2013
|
14/10/2013
|
GCL
|
Road Diversion from Dynasty View
to Mui Shu Hang
Playground
|
|
GW-RN0437-13
|
04/08/2013
|
23/09/2013
|
GCL
|
Road diversion at Tolo Highway CH18.7 to 19.3
|
|
GW-RN0439-13
|
01/08/2013
|
17/10/2013
|
GCL
|
Erection of Sign Gantry at Tolo Highway Ch19.6 to 17.1
|
|
GW-RN0445-13
|
11/08/2013
|
14/10/2013
|
GCL
|
Lane Shifting at Tolo Highway Shatin Bound CH18
- 19.2 and Slip Road of Tai Po Tai Wo Road
|
|
GW-RN0457-13
|
11/08/2013
|
14/10/2013
|
GCL
|
Tolo Highway South Bound CH19.8 to CH
18.7
|
|
GW-RN0467-13
|
16/08/2013
|
31/10/2013
|
GCL
|
Dismantling of B18 Pier
|
|
GW-RN0473-13
|
27/08/2013
|
11/10/2013
|
GCL
|
A section of Fanling
Highway and Tai Wo Service Road West near Wai Tau
|
|
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-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
|
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
There was no
complaint followed up by Environmental Team in the
reporting period.
4.6.3
No new complaint, notification of summons and
prosecution was received in the reporting period.
4.6.4
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 October 2013 will be:-
-
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
5.1.2
The major construction works for
Contract 2 in October 2013 will be:-
-
Condition
survey of existing structures
-
Initial
and record survey
-
Survey
Setting out works for slopes and 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 wall and associated mini-piles
-
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 October 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 October 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 September 2013. Recommendations
on remedial actions were given to the Contractors for the
deficiencies identified during the site audits.
6.1.6
There was no complaint
followed
up by Environmental Team in the reporting month.
6.1.7
No new complaint, 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.
