1.1.1
Civil Engineering and Development Department is the Project Proponent and the Permit Holder of Agreement No. CE 45/2008 (CE)
Liantang / Heung Yuen Wai Boundary Control Point and Associated Works, which is
a Designated Project to be implemented under Environmental Permit number EP-404/2011/A issued on 28 October
2013.
1.1.2
The Project consists of two main components: Construction of a Boundary
Control Point (hereinafter referred as “BCP”); and Construction of a connecting
road alignment. Layout plan of the Project is shown in Appendix A.
1.1.3
The proposed BCP is located at the boundary with Shenzhen near the
existing Chuk Yuen Village, comprising a main passenger building with passenger
and cargo processing facilities and the associated customs, transport and
ancillary facilities. The
connecting road alignment consists of six main sections:
1)
Lin Ma Hang to Frontier Closed Area (FCA) Boundary – this section
comprises at-grade and viaducts and includes the improvement works at Lin Ma
Hang Road;
2)
Ping Yeung to Wo Keng
Shan – this section stretches from the Frontier Closed Area Boundary to the
tunnel portal at Cheung Shan and comprises at-grade and viaducts including an
interchange at Ping Yeung;
3)
North Tunnel – this section comprises the tunnel segment at Cheung Shan
and includes a ventilation building at the portals on either end of the tunnel;
4)
Sha Tau Kok Road – this section stretches from the tunnel portal at Wo Keng Shan to the tunnel portal
south of Loi Tung and comprises at-grade and viaducts including an interchange
at Sha Tau Kok and an administration building;
5)
South Tunnel – this section comprises a tunnel segment that stretches from
Loi Tung to Fanling and includes a ventilation building at the portals on
either end of the tunnel as well as a ventilation building in the middle of the
tunnel near Lau Shui Heung;
6)
Fanling – this section comprises the at-grade, viaducts and interchange
connection to the existing Fanling Highway.
1.1.4
Action-United Environmental Services & Consulting has been commissioned as an Independent ET to implement the
relevant EM&A program in accordance
with the approved EM&A Manual, as well as the associated duties. As part of the EM&A program, the
baseline monitoring has carried out between 13 June 2013 and 12 July 2013
for all parameters including air quality, noise and water quality before
construction work commencement. The
Baseline Monitoring Report summarized the key findings and the rationale behind
determining a set of Action and Limit Levels (A/L Levels) from the baseline
data. Also, the Project baseline
monitoring report which verified by the IEC has been submitted to EPD on 16 July 2013 for endorsement. The major construction works of the
Project was commenced on 16 August 2013
in accordance with the EP Section 5.3 stipulation.
1.1.5
This is 9th
monthly EM&A report presenting the monitoring results and inspection
findings for reporting period from 1 to 30 April 2014.
1.2.1
The Monthly Environmental Monitoring and
Audit (EM&A) Report is structured into the following sections:-
Section 1 Introduction
Section 2 Project
Organization and Construction Progress
Section 3 Summary
of Impact Monitoring Requirements
Section 4 Air
Quality Monitoring
Section 5 Construction
Noise Monitoring
Section 6 Water
Quality Monitoring
Section 7 Waste
Management
Section 8 Site
Inspections
Section 9 Environmental
Complaints and Non-Compliance
Section 10 Implementation
Status of Mitigation Measures
Section 11 Conclusions
and Recommendations
2.1.1
To facilitate the project management and
implementation, the Project would be divided by the following contracts:
·
Contract 2 (CV/2012/08)
·
Contract 3 (CV/2012/09)
·
Contract 4 (TCSS)
·
Contract 5 (CV/2013/03)
·
Contract 6 (CV/2013/08)
2.1.2
The
details of each contracts is summarized below and the delineation of each contracts is shown in Appendix
A.
Contract 2 (CV/2012/08)
2.1.3
Contract 2 has awarded in December 2013 and
construction work will commence on 19 May 2014. Major Scope of Work of the Contract 2 is
listed below:
·
construction of
an approximately 5.2km long dual two-lane connecting road (with about 0.4km of
at-grade road and 4.8km of tunnel) connecting the Fanling Interchange with the
proposed Sha Tau Kok Interchange;
·
construction of a
ventilation adit tunnel and the mid-ventilation
building;
·
construction of
the north and south portal buildings of the Lung Shan Tunnel and their
associated slope works;
·
provision and
installation of ventilation system, E&M works and building services works
for Lung Shan tunnel and Cheung Shan tunnel and their portal buildings;
·
construction of
Tunnel Administration Building adjacent to Wo Keng Shan Road and the associated E&M and building
services works; and
·
construction of associated
footpath, slopes, retaining structures, drainage, sewerage, waterworks,
landscaping works and other ancillary works.
Contract 3 (CV/2012/09)
2.1.4
Contract 3 was awarded in July 2013 and
construction work was commenced on 5 November 2013. Major Scope of Work of the Contract 3 is
listed below:
·
construction of
four link roads connecting the existing Fanling Highway and the south portal of
the Lung Shan Tunnel;
·
realignment of
the existing Tai Wo Service Road West and Tai Wo Service Road East;
·
widening of the
existing Fanling Highway (HyD’s
entrustment works);
·
demolishing
existing Kiu Tau vehicular bridge and Kiu Tau footbridge and reconstruction of the existing Kiu Tau Footbridge (HyD’s
entrustment works); and
·
construction of associated
footpath, slopes, retaining structures, drainage, sewerage, waterworks,
landscaping works and other ancillary works.
Contract 4 (Contract number to be
assigned)
2.1.5
Contract 4 has not yet awarded. The work of the Contract 4 includes provision and installation of
Traffic Control and Surveillance System and the associated electrical and
mechanical works for the Project.
Contract 5 (CV/2013/03)
2.1.6
Contract 5 has awarded in April 2013 and construction
work was commenced in August 2013.
Major Scope of Work of the Contract 5 is listed below:
·
site formation of about 23
hectares of land for the development of the BCP;
·
construction of an
approximately 1.6 km long perimeter road at the BCP including a 175m long
depressed road;
·
associated
diversion/modification works at existing local roads and junctions including
Lin Ma Hang Road;
·
construction of pedestrian
subway linking the BCP to Lin Ma Hang Road;
·
provision of resite area with supporting infrastructure for reprovisioning of the affected village houses; and
·
construction of associated footpath, slopes, retaining structures, drainage,
sewerage, waterworks, landscaping works and other ancillary works.
Contract 6 (CV/2013/08)
2.1.7
Contract 6 has not yet awarded. Major Scope of Work of the Contract 6
will be included below:
Ÿ construction of an approximately 4.6km long dual two-lane connecting
road (with about 0.6km of at-grade road, 3.3km of viaduct and 0.7km of tunnel)
connecting the BCP with the proposed Sha Tau Kok Road Interchange and the
associated ventilation buildings;
Ÿ associated diversion/modification works at access roads to the resite of Chuk Yuen Village;
Ÿ provision of sewage collection, treatment and disposal facilities for
the BCP and the resite of Chuk
Yuen Village;
Ÿ construction of a pedestrian subway linking the BCP to Lin Ma Hang
Road;
Ÿ provisioning of the affected facilities including Wo
Keng Shan Road garden; and
Ÿ construction of associated footpath, slopes, retaining
structures, drainage, sewerage, waterworks, landscaping works and other
ancillary works.
2.2.1
The project organization is shown in Appendix
B. The responsibilities of
respective parties are:
Civil
Engineering and Development Department (CEDD)
2.2.2
CEDD is the Project Proponent and the Permit Holder of the EP of the development
of the Project and will assume overall responsibility for the project. An
Independent Environmental Checker (IEC) shall be employed by CEDD to audit the
results of the EM&A works carried out by the ET.
Environmental
Protection Department (EPD)
2.2.3
EPD is the statutory enforcement body for
environmental protection matters in Hong Kong.
Engineer
or Engineers Representative (ER)
2.2.4
The ER is responsible for overseeing the
construction works and for ensuring that the works are undertaken by the
Contractor in accordance with the specification and contract requirements. The
duties and responsibilities of the ER with respect to EM&A are:
·
Monitor the Contractors’ compliance with
contract specifications, including the implementation and operation of the
environmental mitigation measures and their effectiveness
·
Monitor Contractors’s,
ET’s and IEC’s compliance with the requirements in the Environmental Permit
(EP) and EM&A Manual
·
Facilitate ET’s implementation of the
EM&A programme
·
Participate in joint site inspection by the
ET and IEC
·
Oversee the implementation of the agreed
Event / Action Plan in the event of any exceedance
·
Adhere to the procedures for carrying out
complaint investigation
·
Liaison with DSD, Engineer/Engineer’s
Representative, ET, IEC and the Contractor of the “Construction of the DSD’s Regulaiton of Shenzhen River Stage 4 (RSR 4)” Project
discussing regarding the cumulative impact issues.
The
Contractor(s)
2.2.5
There will be one contractor for each
individual works contract. The Contractor(s)
should report to the ER. The duties
and responsibilities of the Contractor are:
·
Comply with the relevant contract conditions
and specifications on environmental protection
·
Employ an Environmental Team (ET) to
undertake monitoring, laboratory analysis and reporting of EM &A Facilitate
ET’s monitoring and site inspection activities
·
Participate in the site inspections by the ET
and IEC, and undertake any corrective actions
·
Provide information / advice to the ET
regarding works programme and activities which may contribute to the generation
of adverse environmental impacts
·
Submit proposals on mitigation measures in
case of exceedances of Action and Limit levels in accordance with the Event /
Action Plans
·
Implement measures to reduce impact where
Action and Limit levels are exceeded
·
Adhere to the procedures for carrying out
complaint investigation
Environmental Team (ET)
2.2.6
One ET will be employed for this Project. The ET shall not be in any way an associated
body of the Contractor(s), and shall be employed by the Project
Proponent/Contractor to conduct the EM&A programme. The ET should be managed by the ET
Leader. The ET Leader shall be a person who has at least 7 years’ experience in
EM&A and has relevant professional qualifications. Suitably qualified staff
should be included in the ET, and resources for the implementation of the
EM&A programme should be allocated in time under the Contract(s), to enable
fulfillment of the Project’s EM&A requirements as specified in the EM&A
Manual during construction of the Project. The ET shall report to the Project
Proponent and the duties shall include:
·
Monitor and audit various environmental
parameters as required in this EM&A Manual
·
Analyse the
environmental monitoring and audit data, review the success of EM&A
programme and the adequacy of mitigation measures implemented, confirm the
validity of the EIA predictions and identify any adverse environmental impacts
arising
·
Carry out regular site inspection to investigate
and audit the Contractors’ site practice, equipment/plant and work
methodologies with respect to pollution control and environmental mitigation,
and effect proactive action to pre-empt problems
·
Monitor compliance with conditions in the EP,
environmental protection, pollution prevention and control regulations and
contract specifications
·
Audit environmental conditions on site
·
Report on the environmental monitoring and
audit results to EPD, the ER, the lEC and Contractor(s) or their delegated representatives
·
Recommend suitable mitigation measures to the
Contractor in the case of exceedance of Action and Limit levels in accordance
with the Event and Action Plans
·
Liaise with the IEC on all environmental
performance matters and timely submit all relevant EM&A proforma
for approval by IEC
·
Advise the Contractor(s) on environmental
improvement, awareness, enhancement measures etc., on site
·
Adhere to the procedures for carrying out
complaint investigation
·
Liaison with the client departments, Engineer/Engineer’s
Representative, ET, lEC and the Contractor(s) of the
concurrent projects as listed under Section 2.3 below regarding the cumulative
impact issues.
Independent Environmental Checker (IEC)
2.2.7
One IEC will be employed for this Project. The Independent Environmental Checker
(IEC) should not be in any way an associated body of the Contractor(s) or the
ET for the Project. The IEC should
be employed by the Permit Holder (i.e., CEDD) prior to
the commencement of the construction of the Project. The IEC should have at least 10 years’
experience in EM&A and have relevant professional qualifications. The duty of IEC should be:
·
Provide proactive advice to the ER and the
Project Proponent on EM&A matters related to the project, independent from
the management of construction works, but empowered to audit the environmental
performance of construction
·
Review and audit all aspects of the EM&A
programme implemented by the ET
·
Review and verify the monitoring data and all
submissions in connection with the EP and EM&A Manual submitted by the ET
·
Arrange and conduct regular, at least monthly
site inspections of the works during construction phase, and ad hoc inspections
if significant environmental problems are identified
·
Check compliance with the agreed Event /
Action Plan in the event of any exceedance
·
Check compliance with the procedures for
carrying out complaint investigation
·
Check the effectiveness of corrective
measures
·
Feedback audit results to ET by signing off
relevant EM&A proforma
·
Check that the mitigation measures are
effectively implemented
·
Report the works conducted, the findings,
recommendation and improvement of the site inspections, after reviewing ET’s
and Contractor’s works, and advices to the ER and Project Proponent on a
monthly basis
·
Liaison with the client departments,
Engineer/Engineer’s Representative, ET, lEC and the
Contractor(s) of the concurrent projects as listed under Section 2.3 below
regarding the cumulative impact issues.
2.3.1
The concurrent construction works that may be
carried out include, but not limited to, the following:
(a)
Regulation of Shenzhen River Stage IV
(Environmental Permit EP-430/2011);
(b)
Building works and road works by contractors
of Architectural Services Department (ArchSD) (Environmental
Permit EP-404/2011/A);
(c)
Widening of Fanling Highway – Tai Hang to Wo Hop Shek Interchange – Contract No. HY/2012/06;
(d)
Construction of cross-boundary vehicular and
pedestrian bridges (total 5 numbers) across the Shenzhen River; and
(e)
Construction of BCP
facilities in Shenzhen.
2.4.1
In the Reporting Period, the major
construction activity conducted under the Project is located in Contracts 3 and
5 and they are summarized in below.
Moreover, the master construction program of both Contracts 3 and 5 is
enclosed in Appendix C.
Contract 2 (CV/2012/08)
Ÿ The
contract has not yet commenced.
Contract 3 (CV/2012/09)
The Contract
commenced in November 2013. In this
Reporting Period, construction activities conducted is listed below:
Ÿ
Cable detection and trial trenches
Ÿ
Tree Felling Works
Ÿ
Pre-drilling works and piling works
Ÿ
Extension of box culvert ID04, ID05 &
BC01
Ÿ
Bored pile and bored pile wall construction
Ÿ
Construction of haul road and temporary soil
platform for geotechnical works
Ÿ
Slope upgrading works
Ÿ
Noise barrier installation
Ÿ
Waterworks
Contract 4 (Contract number to be assigned)
Ÿ The
contract has not yet awarded.
Contract 5 (CV/2013/03)
The Contract
awarded in April 2013 and commenced on August 2013. In this Reporting Period, construction activities
conducted is listed below:
Ÿ Construction
of Eastern pedestrian subway and pump room at LMH
Ÿ Construction
of Western pedestrian subway at LMH
Ÿ Piling
works at Bridge J
Ÿ Construction
of retaining wall No.1
Ÿ Drainage
works at LMH Road
Ÿ Water
works at LMH Road
Ÿ Western
Life shaft’s construction
Ÿ Eastern
Life shaft’s construction
Ÿ Formation
works at BCP Area
Ÿ Transplantation,
Pruning/felling of existing tree
Contract 6 (CV/2013/08)
Ÿ The
contract is still yet awarded
2.5
Summary of Environmental Submissions
2.5.1
In according to the EP, the required documents
have submitted to EPD for retention which listed in below:
Ÿ
Project Layout Plans of Contracts 2, 3 and 5
Ÿ
Landscape Plan
Ÿ
Topsoil Management Plan
Ÿ
Environmental Monitoring and Audit Programme
Ÿ
Baseline Monitoring Report (TCS00690/13/600/R0030v3) for the Project
Ÿ
Waste Management Plan of the Contracts 3 and
5
Ÿ
Contamination Assessment Plan (CAP) for Po
Kat Tsai and Loi Tung
Ÿ
Vegetation Survey Report
2.5.2
Summary of
the relevant permits, licenses, and/or notifications on environmental
protection for the Project of each contracts are presented in Table 2-1.
Table 2-1 Status of Environmental
Licenses and Permits of the Contracts
|
Item
|
Description
|
License/Permit Status
|
|
Contract
3
|
Contract
5
|
Contract
2, 4 & 6
|
|
1
|
Air pollution Control (Construction Dust)
Regulation
|
Ref.
No: 362101
Notification
received by EPD on 17 Jul 2013
|
Ref. No: 359338
Notified EPD on 13 May 2013
|
--
|
|
2
|
Chemical
Waste Producer Registration - Waste Producers
Number
|
No.:5113-634-C3817-01 Valid form 7 Oct 2013 till
the end of Contract
|
No.: 5213-642-S3735-01
Valid form 8 Jun 2013 till the end of Contract
|
--
|
|
3
|
Water
Pollution Control Ordinance - Discharge
License
|
No.:WT00016832 – 2013
Valid from 28 Aug 13 to 31 Aug 2018
|
No.: W5/1G44/1
Valid from 8 Jun 13 to 30 Jun 2018
|
--
|
|
4
|
Waste
Disposal Regulation - Billing Account for Disposal of Construction Waste
|
Account
No. 7017914
Valid form 2 Aug 13 till the end of Contract
|
Account
No. 7017351
Valid form 29 Apr 13 till the end of Contract
|
--
|
|
5
|
Construction
Noise Permit
|
GW-RN0109-14
Valid on
24 Feb 2014 till 17 May 2014
GW-RN0136-14
Valid on
4 Mar 2014 till 22 Jun 2014
|
NA
|
--
|
3.1.1
The Environmental Monitoring and Audit
requirements are set out in the Approved EM&A manual. Environmental issues
such as air quality, construction noise and water quality were identified as
the key issues during the construction phase of the Project.
3.1.2
A summary of construction phase EM&A
requirements are presented in the
sub-sections below.
3.2.1
The EM&A program of construction phase
monitoring shall cover the following environmental issues:
•
Air quality;
•
Construction noise; and
•
Water quality
3.2.2
A summary of the monitoring parameters is
presented in Table 3-1.
Table 3-1 Summary
of EM&A Requirements
|
Environmental Issue
|
Parameters
|
|
Air Quality
|
Ÿ 1-hour
TSP by Real-Time Portable Dust Meter; and
Ÿ 24-hour
TSP by High Volume Air Sampler.
|
|
Noise
|
Ÿ Leq(30min) in
normal working days (Monday to Saturday) 07:00-19:00 except public holiday;
and
Ÿ 3 sets
of consecutive Leq(5min) on restricted
hours i.e. 19:00 to 07:00 next day, and whole day of public holiday or Sunday
Ÿ Supplementary
information for data auditing, statistical results such as L10 and
L90 shall also be obtained for reference.
|
|
Water Quality
|
In-situ Measurements
Ÿ Dissolved
Oxygen Concentration (mg/L);
Ÿ Dissolved
Oxygen Saturation (% );
Ÿ Turbidity
(NTU);
Ÿ pH unit;
Ÿ Water
depth (m); and
Ÿ Temperature
(℃).
|
|
Laboratory Analysis
Ÿ Suspended
Solids (mg/L)
|
3.3.1
The designated monitoring locations as
recommended in the EM&A Manual are
shown in Appendix D. As the access to some of the designated
monitoring locations was questionable due to safety reason or denied by the
landlords, alternative locations therefore have had proposed. The proposed
alternative monitoring locations has updated in the revised EM&A Programme
which verified by IEC and certified by ET Leader prior submitted to EPD on 10
July 2013. Table 3-2, Table
3-3 and Table 3-4 are respectively listed the air quality, construction
noise and water quality monitoring locations for the Project and a map showing
these monitoring stations is presented in Appendix E.
Table 3-2 Impact
Monitoring Stations - Air Quality
|
Station ID
|
Description
|
Works Area
|
Related to the Work Contract
|
|
AM1a*
|
Garden Farm, Tsung Yuen Ha Village
|
BCP
|
Contract 5
|
|
AM2
|
Village House
near Lin Ma Hang Road
|
LMH to Frontier
Closed Area
|
Contract 5,
Contract 6
|
|
AM3
|
Ta Kwu Ling
Fire Service Station of Ta Kwu Ling Village.
|
LMH to Frontier
Closed Area
|
Contract 5,
Contract 6
|
|
AM4a
|
A village house located at about
160m east side of the original point AM4
|
LMH to Frontier
Closed Area
|
Contract 6
|
|
AM5
|
Ping Yeung
Village House
|
Ping Yeung to Wo Keng Shan
|
Contract 6
|
|
AM6
|
Wo Keng Shan Village House
|
Ping Yeung to Wo Keng Shan
|
Contract 6
|
|
AM7a
|
Another village (nameless) aligns
to Sha Tau Kok Road – Wo Hang Section proximity to Tai Tong Wu Village.
The location is about 140m away from the
original point AM7
|
Sha Tau Kok
Road
|
Contract 2
|
|
AM8
|
Po Kat Tsai
Village No. 4
|
Po Kat Tsai
|
Contract 2
|
|
AM9b#
|
Nam Wa Po Village House No. 80
|
Fanling
|
Contract 3
|
# Proposal for the change of air quality monitoring location from AM9a
to AM9b was submitted to EPD on 4 Nov 2013 after verified by the IEC and it was
approved by EPD (EPD’s ref.: (15) in EP 2/N7/A/52 Pt.10 dated 8 Nov 2013).
* Proposal for the change of air quality monitoring location from AM1to
AM1a was submitted to EPD on 24 March2014 after verified by the IEC.
Table 3-3 Impact
Monitoring Stations - Construction Noise
|
Station ID
|
Description
|
Works Area
|
Related to the Work Contract
|
|
NM1
|
Tsung Yuen Ha Village House No. 63
|
BCP
|
Contract 5
|
|
NM2
|
Village House near Lin Ma Hang
Road
|
Lin Ma Hang to Frontier Closed
Area
|
Contract 5,
Contract 6
|
|
NM3
|
Ping Yeung Village House (facade
facing northeast)
|
Ping Yeung to Wo
Keng Shan
|
Contract 6
|
|
NM4
|
Wo Keng Shan Village House
|
Ping Yeung to Wo
Keng Shan
|
Contract 6
|
|
NM5
|
Village House, Loi Tung
|
Sha Tau Kok Road
|
Contract 2,
Contract 6
|
|
NM6
|
Tai Tong Wu Village House 2
|
Sha Tau Kok Rpad
|
Contract 2,
Contract 6
|
|
NM7
|
Po Kat Tsai Village
|
Po Kat Tsai
|
Contract 2
|
|
NM8
|
Village House, Tong Hang
|
Fanling
|
Contract 2
Contract 3
|
|
NM9
|
Village House, Kiu
Tau Village
|
Fanling
|
Contract 3
|
|
NM10
|
Nam Wa
Po Village House No. 80
|
Fanling
|
Contract 3
|
Table 3-4 Impact
Monitoring Stations - Water Quality
|
Station ID
|
Description
|
Designated / Alternative Location
|
Nature of the
location
|
Related to the Work Contract
|
|
Coordinates
|
|
Easting
|
Northing
|
|
WM1
|
Downstream of Kong Yiu Channel
|
833679
|
845421
|
Alternative location located at upstream 51m of the designated location
|
Contract 5
|
|
WM1-Control
|
Upstream of Kong Yiu Channel
|
834185
|
845917
|
NA
|
Contract 5
|
|
WM2A
|
Downstream of River Ganges
|
834204
|
844471
|
Alternative location located at downstream 81m of the designated
location
|
Contract 6
|
|
WM2A-Control
|
Upstream of River Ganges
|
835270
|
844243
|
Alternative location located at upstream 78m of the designated location
|
Contract 6
|
|
WM2B
|
Downstream of River Ganges
|
835433
|
843397
|
NA
|
Contract 6
|
|
WM2B-Control
|
Upstream of River Ganges
|
835835
|
843351
|
Alternative location located at downstream 31m of the designated
location
|
Contract 6
|
|
WM3
|
Downstream of River Indus
|
836324
|
842407
|
NA
|
Contract 6
|
|
WM3-Control
|
Upstream of River Indus
|
836763
|
842400
|
Alternative location located at downstream 26m of the designated
location
|
Contract 6
|
|
WM4
|
Downstream of Ma Wat Channel
|
833850
|
838338
|
Alternative location located at upstream 11m of the designated location
|
Contract 3
|
|
WM4–Control A
|
Kau Lung Hang
Stream
|
834028
|
837695
|
Alternative location located at downstream 28m of the designated
location
|
Contract 3
|
|
WM4–Control B
|
Upstream of Ma Wat Channel
|
833760
|
837395
|
Alternative location located at upstream 15m of the designated location
|
Contract 3
|
The requirements of impact monitoring are stipulated in Sections 2.1.6, 3.1.5 and 4.1.6 of the approved EM&A Manual and presented as
follows.
Air Quality Monitoring
3.4.1
Frequency of impact air
quality monitoring is as follows:
|
Ÿ
1-hour TSP
|
3 times every six days during course of works
|
|
Ÿ
24-hour TSP
|
Once every 6 days during course of works.
|
Noise Monitoring
3.4.2
One set of Leq(30min)
as 6 consecutive Leq(5min)
between 0700-1900 hours on normal weekdays and once every week during course of works. If construction work necessary to carry
out at other time periods, i.e. restricted time period (19:00 to 07:00 the next
morning and whole day on public holidays) (hereinafter referred as “the
restricted hours”), 3 consecutive Leq(5min) measurement will
depended CNP requirements to undertake.
Supplementary information for data
auditing, statistical results such as L10 and L90 shall
also be obtained for reference.
Water Quality Monitoring
3.4.3
The water quality monitoring frequency shall
be 3 days per week during course of works.
The interval between two sets of monitoring shall not be less than 36
hours.
Air Quality Monitoring
3.5.1
The 24-hour and 1-hour TSP levels shall be
measured by following the standard high volume sampling method as set out in
the Title 40 of the Code of Federal
Regulations, Chapter 1 (Part 50), Appendix B. If the ET proposes to use a direct
reading dust meter to measure 1-hour TSP levels, it shall submit sufficient
information to the IEC to approve.
3.5.2
The filter paper of 24-hour TSP measurement shall be determined by HOKLAS
accredited laboratory.
3.5.3
All equipment to be used for air quality
monitoring is listed in Table 3-5.
Table 3-5 Air
Quality Monitoring Equipment
|
Equipment
|
Model
|
|
24-Hr TSP
|
|
High
Volume Air Sampler
|
TISCH High Volume
Air Sampler, HVS Model TE-5170
|
|
Calibration
Kit
|
TISCH Model TE-5025A
|
|
1-Hour TSP
|
|
Portable Dust Meter
|
Sibata LD-3B
Laser Dust monitor Particle Mass Profiler & Counter
|
Wind Data Monitoring Equipment
3.5.4
According to the approved EM&A Manual, wind
data monitoring equipment shall also be provided and set up for logging wind
speed and wind direction near the dust monitoring locations. The equipment installation location shall
be proposed by the ET and agreed with the IEC. For installation and operation of wind
data monitoring equipment, the following points shall be observed:
1)
The wind sensors should be installed 10 m
above ground so that they are clear of obstructions or turbulence caused by
buildings.
2)
The wind data should be captured by a data logger.
The data shall be downloaded for analysis at least once a month.
3)
The wind data monitoring equipment should be
re-calibrated at least once every six months.
4)
Wind direction should be divided into 16
sectors of 22.5 degrees each.
3.5.5
ET has liaised with the landlords of the successful
granted HVS installation premises.
However, the owners rejected to provide premises for wind data
monitoring equipment installation.
3.5.6
Under this situation, the ET proposed alternative
methods to obtain representative wind data. Meteorological information as extracted
from “the Hong Kong Observatory Ta Kwu Ling Station” is alternative method to obtain
representative wind data. For Ta
Kwu Ling Station, it is located nearby the Project site. Moreover, this station is located at 15m
above mean sea level while its anemometer is located at 13m above the existing
ground which in compliance with the general setting up requirement. Furthermore, this station also can be to
provide the humidity, rainfall, and air pressure and temperature etc.
meteorological information. In Hong
Kong of a lot development projects, weather information extracted from Hong
Kong Observatory is common alternative method if weather station installation
not allowed.
Noise Monitoring
3.5.7
Sound level meter in compliance with the
International Electrotechnical Commission
Publications 651: 1979 (Type 1) and 804: 1985 (Type 1) specifications shall be
used for carrying out the noise monitoring. The sound level meter shall be checked
using an acoustic calibrator. The
wind speed shall be checked with a portable wind speed meter capable of
measuring the wind speed in m s-1.
3.5.8
Noise monitoring equipment to be used for monitoring
is listed in Table 3-6.
Table 3-6 Construction
Noise Monitoring Equipment
|
Equipment
|
Model
|
|
Integrating Sound Level Meter
|
B&K Type 2238 or Rion
NL-14 or Rion NL-31
|
|
Calibrator
|
B&K Type 4231
|
|
Portable Wind Speed Indicator
|
Testo Anemometer
|
3.5.9
Sound level meters listed above comply with
the International Electrotechnical
Commission Publications 651: 1979 (Type 1) and 804: 1985 (Type 1) specifications, as recommended in TM issued
under the NCO. The acoustic
calibrator and sound level meter to be used in the impact monitoring will be
calibrated yearly.
Water Quality Monitoring
3.5.10
DO and water
temperature should be measured in-situ by a DO/temperature meter. The
instrument should be portable and weatherproof using a DC power source. It
should have a membrane electrode with automatic temperature compensation
complete with a cable. The equipment should be capable of measuring:
•
a DO level
in the range of 0-20 mg/l and 0-200% saturation; and
•
a
temperature of between 0 and 45 degree Celsius.
3.5.11
A portable pH meter
capable of measuring a range between 0.0 and 14.0 should be provided to measure
pH under the specified conditions accordingly to the APHA Standard Methods.
3.5.12
The instrument should
be portable and weatherproof using a DC power source. It should have a
photoelectric sensor capable of measuring turbidity between 0-1000 NTU.
3.5.13
A portable, battery-operated echo sounder or
tape measure will be used for the determination of water depth at each
designated monitoring station as appropriate.
3.5.14
A water sampler e.g. Kahlsico
Water Sampler, which is a transparent PVC cylinder with capacity not less than
2 litres, will be used for water sampling if water depth over than 0.5m. For sampling from very shallow water
depths e.g. <0.5 m, water sample collection will be directly from water
surface below 100mm use sampling plastic bottle to avoid inclusion of bottom
sediment or humus. Moreover, Teflon/stainless
steel bailer or self-made sampling buckets maybe used for water sampling. The equipment used for sampling will be
depended the sampling location and depth situations.
3.5.15
Water samples for laboratory measurement of
SS will be collected in high density polythene bottles, packed in ice (cooled
to 4 ºC without being frozen), and delivered to the laboratory in the same day
as the samples were collected.
3.5.16
Analysis of suspended solids should be
carried out in a HOKLAS or other accredited laboratory. Water samples of about
1L should be collected at the monitoring stations for carrying out the
laboratory suspended solids determination. The SS determination work should start
within 24 hours after collection of the water samples. The SS analyses should
follow the APHA Standard Methods 2540D
with Limit of Reporting of 2 mg/L.
3.5.17
Water quality monitoring equipment used in
the impact monitoring is listed in Table 3-7. Suspended solids (SS) analysis
is carried out by a local HOKLAS-accredited laboratory, namely ALS Technichem
(HK) Pty Ltd.
Table 3-7 Water
Quality Monitoring Equipment
|
Equipment
|
Model
|
|
Water
Depth Detector
|
Eagle Sonar or tape measures
|
|
Water Sampler
|
A 2-litre transparent PVC cylinder with latex cups at
both ends or teflon/stainless steel bailer or
self-made sampling bucket
|
|
Thermometer & DO meter
|
YSI PRO20 Handheld Dissolved
Oxygen Instrument
|
|
pH meter
|
The EcoSense ® pH10A pen-style instrument
|
|
Turbidimeter
|
Hach 2100Q
|
|
Sample Container
|
High density polythene bottles (provided by laboratory)
|
|
Storage
Container
|
‘Willow’
33-liter plastic cool box with Ice pad
|
1-hour TSP
Monitoring
3.6.1
The 1-hour TSP monitor was a brand named “Sibata LD-3B Laser Dust monitor Particle Mass Profiler
& Counter” which is a portable, battery-operated laser photometer. The 1-hour TSP meter provides a real
time 1-hour TSP measurement based on 90o light scattering. The 1-hour TSP monitor consists of the
following:
(a.)
A pump to draw sample aerosol through the
optic chamber where TSP is measured;
(b.)
A sheath air system to isolate the aerosol in
the chamber to keep the optics clean for maximum reliability; and
(c.)
A built-in data logger compatible with
Windows based program to facilitate data collection, analysis and reporting.
3.6.2
The 1-hour TSP meter is used within the valid
period as follow manufacturer’s Operation and Service Manual.
24-hour TSP
Monitoring
3.6.3
The equipment used for 24-hour TSP
measurement is Thermo Andersen Model GS2310 TSP high volume air sampling
system, which complied with EPA Code of
Federal Regulation, Appendix B to Part 50. The High Volume Air Sampler
(HVS) consists of the following:
(a.)
An anodized aluminum shelter;
(b.)
A 8”x10” stainless steel filter holder;
(c.)
A blower motor assembly;
(d.)
A continuous flow/pressure recorder;
(e.)
A motor speed-voltage control/elapsed time
indicator;
(f.)
A 7-day mechanical timer, and
(g.)
A power supply of 220v/50 Hz
3.6.4
The HVS is operated and calibrated on a
regular basis in accordance with the manufacturer’s instruction using Tisch Calibration Kit Model TE-5025A. Calibration would carry out in two month
interval.
3.6.5
24-hour TSP is collected by the ET on filters
of HVS and quantified by a local HOKLAS accredited laboratory, ALS Technichem (HK) Pty Ltd (ALS), upon receipt of the
samples. The ET keep all the
sampled 24-hour TSP filters in normal air conditioned room conditions, i.e. 70%
RH (Relative Humidity) and 25oC, for six months prior to disposal.
Noise Monitoring
3.6.6
Noise measurements were taken in terms of the
A-weighted equivalent sound pressure level (Leq)
measured in decibels dB(A). Supplementary statistical results
(L10 and L90) were also obtained for reference.
3.6.7
During the monitoring, all noise measurements
would be performed with the meter set to FAST response and on the A-weighted
equivalent continuous sound pressure level (Leq). Leq(30min)
in six consecutive Leq(5min) measurements will
use as the monitoring parameter for the time period between 0700-1900 hours on
weekdays; and also Leq(15min) in three
consecutive Leq(5min) measurements would
be used as monitoring parameter for other time periods (e.g. during restricted
hours), if necessary.
3.6.8
Prior of noise measurement, the accuracy of
the sound level meter is checked using an acoustic calibrator generating a
known sound pressure level at a known frequency. The checking is performed before and
after the noise measurement.
Water
Quality
3.6.9
Water quality monitoring is conducted at the
designated locations. The sampling produce with the in-situ monitoring are
presented as below:
Sampling Procedure
3.6.10
A Digital Global
Positioning System (GPS) is used to identify the designated monitoring stations
prior to water sampling. A
portable, battery-operated echo sounder is used for the determination of water
depth at each station. At each
station, water sample would be collected from 0.1m below water surface or the
water surface to prevent the river bed sediment for stirring.
3.6.11
The sample container will be rinsed with a
portion of the water sample. The
water sample then will be transferred to the high-density polythene bottles as provided by the laboratory,
labeled with a unique sample number and sealed with a screw cap.
3.6.12
Before sampling, general information such as
the date and time of sampling, weather condition as well as the personnel
responsible for the monitoring would be recorded on the field data sheet.
3.6.13
A ‘Willow’ 33-liter plastic cool box packed
with ice will be used to preserve the water samples prior to arrival at the
laboratory for chemical determination.
The water temperature of the cool box is maintained at a temperature as
close to 40C as possible without being frozen. Samples collected are delivered to the
laboratory upon collection.
In-situ Measurement
3.6.14
YSI PRO20 Handheld Dissolved Oxygen
Instrument is used for water in-situ
measures, which automates the measurements and data logging of
temperature, dissolved oxygen and dissolved oxygen saturation.
3.6.15
A portable EcoSense ® pH10A pen-style instrument is used for in-situ pH measurement. The pH meter is capable of measuring pH
in the range of 0 – 14 and readable to 0.1.
3.6.16
A portable Hach 2100Q Turbidimeter is used for in-situ turbidity measurement. The
turbidity meter is capable of measuring turbidity in the range of 0 – 1000 NTU.
3.6.17
All in-situ measurement equipment are calibrated by HOKLAS accredited laboratory of three
month interval.
Laboratory Analysis
3.6.18
All water samples analyzed Suspended Solids
(SS) will be carried out by a local HOKLAS-accredited testing laboratory (ALS Technichem (HK) Pty Ltd HOKLAS registration no. 66). SS determination using APHA
Standard Methods 2540D as specified in the EM&A Manual will start within
48 hours of water sample receipt.
3.7.1
Calibration of the HVS is performed upon installation
and thereafter at bimonthly intervals in accordance with the manufacturer’s
instruction using the certified standard calibrator (TISCH Model TE-5025A). Moreover, the Calibration
Kit would be calibrated annually. The
calibration data are properly documented and the records are maintained by ET
for future reference.
3.7.2
The 1-hour TSP
meter was calibrated by the supplier prior to purchase. Zero response of the equipment would be
checked before and after each monitoring event. Annually calibration with the High Volume
Sampler (HVS) in same condition would be undertaken by the Laboratory.
3.7.3
The sound level
meter and calibrator are calibrated and certified by a laboratory accredited
under HOKLAS or any other international accreditation scheme at yearly basis.
3.7.4
All water quality monitoring equipment would
be calibrated by HOKLAS accredited laboratory of three month intervals.
3.7.5
The calibration certificates of all monitoring
equipment used for the impact monitoring program in the Reporting Period and
the HOKLAS accredited certificate of laboratory are attached in Appendix F.
3.8.1
The baseline results form the basis for
determining the environmental acceptance criteria for the impact
monitoring. According to the approved
Environmental Monitoring and Audit Manual, the air quality, construction noise
and water quality criteria were set up, namely Action and Limit levels are
listed in Tables 3-8, 3-9 and 3-10.
Table 3-8 Action and
Limit Levels for Air Quality Monitoring
|
Monitoring
Station
|
Action Level (mg /m3)
|
Limit Level (mg/m3)
|
|
1-hour TSP
|
24-hour TSP
|
1-hour TSP
|
24-hour TSP
|
|
AM1a
|
265
|
143
|
500
|
260
|
|
AM2
|
268
|
149
|
|
AM3
|
269
|
145
|
|
AM4a
|
267
|
148
|
|
AM5
|
268
|
143
|
|
AM6
|
269
|
148
|
|
AM7a
|
275
|
156
|
|
AM8
|
269
|
144
|
|
AM9b
|
271
|
151
|
Table 3-9 Action
and Limit Levels for Construction Noise
|
Monitoring Location
|
Action Level
|
Limit Level in
dB(A)
|
|
Time Period:
0700-1900 hours on normal weekdays
|
|
NM1, NM2, NM3, NM4,
NM5, NM6, NM7, NM8, NM9, NM10
|
When one
or more documented complaints are received
|
75 dB(A)Note 1
& Note 2
|
Note 1: Acceptable Noise Levels
for school should be reduced to 70 dB(A)
and65 dB(A) during examination period
Note 2: If works are to be
carried out during restricted hours, the conditions stipulated in the construction noise permit issued by the NCA have to be followed.
Table 3-10 Action and
Limit Levels for Water Quality
|
Parameter
|
Performance
criteria
|
Monitoring
Location
|
|
WM1
|
WM2A
|
WM2B
|
WM3
|
WM4
|
|
DO (mg/L)
|
Action Level
|
(*)4.23
|
(**)4.00
|
(*)4.74
|
(**)4.00
|
(*)4.14
|
|
Limit Level
|
(#)4.19
|
(**)4.00
|
(#)4.60
|
(**)4.00
|
(#)4.08
|
|
Turbidity (NTU)
|
Action Level
|
51.3
|
24.9
|
11.4
|
13.4
|
35.2
|
|
AND 120% of upstream control station of
the same day
|
|
Limit Level
|
67.6
|
33.8
|
12.3
|
14.0
|
38.4
|
|
AND 130% of upstream control station of the same day
|
|
SS (mg/L)
|
Action Level
|
54.5
|
14.6
|
11.8
|
12.6
|
39.4
|
|
AND 120% of upstream control station of the
same day
|
|
Limit Level
|
64.9
|
17.3
|
12.4
|
12.9
|
45.5
|
|
AND 130% of upstream control station of the same day
|
|
Remarks:
(*) The
Proposed Action Level of Dissolved
Oxygen is adopted to be used 5%-ile of
baseline data
(**) The
Proposed Action & Limit Level of Dissolved
Oxygen is used 4mg/L
(#) The
Proposed Limit Level of Dissolved
Oxygen is adopted to be used 1%-ile of
baseline data
|
|
|
|
|
|
|
|
|
3.8.2
Should non-compliance of the environmental
quality criteria occurs, remedial actions will be triggered according to the
Event and Action Plan which presented in Appendix G.
3.9.1
All monitoring data will be handled by the ET’s in-house data recording and management system. The monitoring data
recorded in the equipment will be downloaded directly from the equipment at the
end of each monitoring day. The
downloaded monitoring data will input into a computerized database maintained
by the ET. The laboratory results will
be input directly into the computerized database and checked by personnel other
than those who input the data.
3.9.2
For monitoring parameters that require
laboratory analysis, the local laboratory shall follow the QA/QC requirements
as set out under the HOKLAS scheme for the relevant laboratory tests.
4.1.1
In the Reporting Period, construction works under the
project have been commenced in Contracts 3
and 5 and air quality monitoring was performed at 4 relevant designated
locations as below:
Ÿ
AM1a - Garden Farm, Tsung
Yuen Ha Village;
Ÿ
AM2 - Village House near Lin Ma Hang Road;
Ÿ
AM3 - Ta Kwu Ling Fire Service Station of Ta
Kwu Ling Village; and
Ÿ
AM9b - Nam Wa Po
Village House No. 80
4.1.2
The air quality monitoring schedule is presented
in Appendix H and the monitoring
results are summarized in the following sub-sections.
4.2.1
In the Reporting Period, a total of 60 events of 1-hour TSP and 24 events of 24-hours TSP
monitoring were carried out and the monitoring results are summarized in Tables
4-1 to 4-4. The detailed
24-hour TSP monitoring data are presented in Appendix I and the relevant graphical plots are shown in Appendix J.
Table 4-1 Summary
of 24-hour and 1-hour TSP Monitoring Results – AM1a
|
Date
|
24-hour
TSP (mg/m3)
|
1-hour
TSP (mg/m3)
|
|
Date
|
Start Time
|
1st reading
|
2nd reading
|
3rd reading
|
|
2-Apr-14
|
50
|
3-Apr-14
|
11:02
|
124
|
78
|
206
|
|
8-Apr-14
|
49
|
9-Apr-14
|
10:34
|
89
|
47
|
39
|
|
14-Apr-14
|
69
|
15-Apr-14
|
11:31
|
95
|
90
|
90
|
|
17-Apr-14
|
47
|
22-Apr-14
|
11:31
|
125
|
125
|
124
|
|
23-Apr-14
|
34
|
26-Apr-14
|
10:06
|
101
|
95
|
54
|
|
29-Apr-14
|
64
|
Average
(Range)
|
99
(39 – 206)
|
|
Average
(Range)
|
52
(34 – 69)
|
Table 4-2 Summary
of 24-hour and 1-hour TSP Monitoring Results – AM2
|
Date
|
24-hour
TSP (mg/m3)
|
1-hour
TSP (mg/m3)
|
|
Date
|
Start Time
|
1st reading
|
2nd
reading
|
3rd
reading
|
|
2-Apr-14
|
75
|
3-Apr-14
|
11:34
|
72
|
111
|
159
|
|
8-Apr-14
|
43
|
9-Apr-14
|
11:10
|
33
|
31
|
40
|
|
14-Apr-14
|
103
|
15-Apr-14
|
11:37
|
99
|
88
|
88
|
|
17-Apr-14
|
66
|
22-Apr-14
|
11:19
|
103
|
93
|
96
|
|
23-Apr-14
|
71
|
26-Apr-14
|
10:53
|
98
|
104
|
81
|
|
29-Apr-14
|
97
|
Average
(Range)
|
86
(31 - 159)
|
|
Average
(Range)
|
76
(43 – 103)
|
Table 4-3 Summary
of 24-hour and 1-hour TSP Monitoring Results – AM3
|
Date
|
24-hour
TSP (mg/m3)
|
1-hour
TSP (mg/m3)
|
|
Date
|
Start Time
|
1st reading
|
2nd
reading
|
3rd
reading
|
|
2-Apr-14
|
56
|
3-Apr-14
|
11:39
|
83
|
163
|
185
|
|
8-Apr-14
|
32
|
9-Apr-14
|
11:10
|
33
|
31
|
40
|
|
14-Apr-14
|
65
|
15-Apr-14
|
11:45
|
102
|
94
|
123
|
|
17-Apr-14
|
43
|
22-Apr-14
|
11:15
|
107
|
105
|
100
|
|
23-Apr-14
|
42
|
26-Apr-14
|
10:45
|
76
|
68
|
67
|
|
29-Apr-14
|
66
|
Average
(Range)
|
92
(31 – 185)
|
|
Average
(Range)
|
51
(32 – 66)
|
Table 4-4 Summary
of 24-hour and 1-hour TSP Monitoring Results – AM9b
|
Date
|
24-hour
TSP (mg/m3)
|
1-hour
TSP (mg/m3)
|
|
Date
|
Start Time
|
1st reading
|
2nd
reading
|
3rd
reading
|
|
2-Apr-14
|
37
|
3-Apr-14
|
10:21
|
186
|
132
|
181
|
|
8-Apr-14
|
29
|
9-Apr-14
|
11:26
|
42
|
25
|
27
|
|
14-Apr-14
|
69
|
15-Apr-14
|
10:54
|
96
|
83
|
84
|
|
17-Apr-14
|
26
|
22-Apr-14
|
10:35
|
115
|
96
|
98
|
|
23-Apr-14
|
53
|
26-Apr-14
|
11:08
|
73
|
75
|
117
|
|
29-Apr-14
|
60
|
Average
(Range)
|
95
(25 - 186)
|
|
Average
(Range)
|
46
(26 – 69)
|
4.2.2
As shown in Tables 4-1 to 4-4,
the 24-hour and 1-hour TSP monitoring results were below the Action/ Limit
Level. No Notification of
Exceedances (NOE) of air quality criteria or corrective action was therefore
required.
4.2.3
Two months interval calibration
were carried out at AM1a, AM2, AM3 and AM9b in accordance with the
EM&A Manual requirements. The
updated calibration certificates are attached in Appendix F.
4.2.4
The meteorological data during the impact
monitoring days are summarized in Appendix
K.
5.1.1
In the Reporting Period, construction works under the
project have been commenced in Contracts
3 and 5 and noise monitoring was performed at 5 relevant designated locations
as below:
Ÿ
NM1 - Tsung Yuen Ha
Village House No. 63;
Ÿ
NM2 - Village House near Lin Ma Hang Road;
Ÿ
NM8 - Village House, Tong Hang;
Ÿ
NM9 - Village House, Kiu
Tau Village; and
Ÿ
NM10 - Nam Wa Po
Village House No. 80
5.1.2
The noise monitoring schedule is presented in
Appendix H and the monitoring
results are summarized in the following sub-sections.
5.2.1
In the Reporting Period, a total of 25
event noise measurements were carried out at the designated locations. The sound level meter was set in 1m from
the exterior of the building façade including noise monitoring locations NM1,
NM2, NM8 and NM9. Therefore, no
façade correction (+3 dB(A) is added according to
acoustical principles and EPD guidelines.
However, free-field status was performed at NM10. So, façade correction (+3 dB(A) has added according to the requirement in this
month. The noise monitoring results
at the designated locations are summarized in Tables 5-1. The detailed noise monitoring
data are presented in Appendix
I and the relevant graphical plots are shown in Appendix J.
Table 5-1 Summary of Construction Noise Monitoring Results
|
Date
|
NM1
(Leq30min)
|
NM2
(Leq30min)
|
NM8
(Leq30min)
|
NM9
(Leq30min)
|
(*) NM10
(Leq30min)
|
|
3-Apr-14
|
52
|
58
|
68
|
68
|
61
|
|
9-Apr-14
|
53
|
59
|
63
|
60
|
70
|
|
15-Apr-14
|
57
|
66
|
65
|
59
|
72
|
|
22-Apr-14
|
50
|
60
|
57
|
58
|
61
|
|
26-Apr-14
|
53
|
58
|
65
|
61
|
65
|
|
Limit Level
|
75 dB(A)
|
Remarks
(*) façade correction (+3 dB(A)
is added according to acoustical principles and EPD guidelines
5.2.2
As shown in Table
5-1, the noise level measured at five (5) designated monitoring
locations were below 75dB(A). Furthermore, there were no noise complaints (Action Level
exceedance) received by the RE, Contractor or CEDD in the Reporting Period. Therefore,
no Action or Limit Level exceedance was triggered and no corrective action was required.
6.1.1
In the Reporting Period, construction works under the
project has been commenced in Contracts
3 and 5 and water quality monitoring was performed at 5 relevant designated
locations as below:
Ÿ
WM1 – Contract 5 working site downstream at Kong
Yiu Channel;
Ÿ
WM1-Control – Contract 5 working site upstream
at Kong Yiu Channel;
Ÿ
WM4 - Contract 3 working site Downstream of
Ma Wat Channel
Ÿ
WM4–Control A - Contract 3 working site Kau Lung Hang Stream
Ÿ
WM4–Control B - Contract 3 working site
Upstream of Ma Wat Channel
6.1.2
The water quality monitoring schedule is presented
in Appendix H. The monitoring results are summarized in
the following sub-sections.
6.2.1
In the Reporting Period, a total of 12
sampling days were performed for water quality monitoring at Contracts 3 and 5. The key monitoring parameters including Dissolved Oxygen, Turbidity and Suspended
Solids are summarized in Tables 6-1 and 6-2. Breaches of water
quality monitoring criteria are shown in Table 6-3. Detailed
monitoring database including in-situ measurements and laboratory analysis data
are shown in Appendix I and the relevant
graphical plot are shown in Appendix
J.
Table 6-1 Summary
of Water Quality Monitoring Results for Contract 3
|
Date
|
Dissolved Oxygen
(mg/L)
|
Turbidity
(NTU)
|
Suspended Solids
(mg/L)
|
|
WM4
|
WM4-CA
|
WM4-CB
|
WM4
|
WM4-CA
|
WM4-CB
|
WM4
|
WM4-CA
|
WM4-CB
|
|
2-Apr-14
|
7.52
|
8.40
|
6.87
|
136.0
|
25.8
|
63.3
|
65.5
|
18.0
|
41.0
|
|
4-Apr-14
|
7.10
|
7.75
|
7.25
|
9.5
|
4.9
|
8.9
|
4.5
|
2.0
|
5.0
|
|
7-Apr-14
|
8.54
|
8.27
|
6.58
|
10.0
|
4.3
|
8.0
|
11.0
|
2.0
|
6.5
|
|
9-Apr-14
|
7.54
|
8.10
|
6.99
|
34.5
|
4.2
|
13.2
|
28.0
|
3.0
|
8.5
|
|
11-Apr-14
|
8.48
|
8.21
|
7.70
|
11.5
|
4.3
|
7.9
|
11.0
|
4.5
|
6.5
|
|
15-Apr-14
|
8.79
|
8.60
|
10.27
|
8.7
|
7.8
|
5.5
|
9.0
|
10.0
|
4.5
|
|
17-Apr-14
|
8.97
|
7.61
|
7.68
|
12.5
|
4.2
|
5.4
|
7.0
|
3.0
|
2.5
|
|
22-Apr-14
|
4.82
|
6.64
|
2.49
|
11.2
|
4.2
|
4.9
|
11.5
|
2.0
|
2.0
|
|
24-Apr-14
|
7.11
|
7.69
|
6.12
|
12.2
|
4.8
|
6.2
|
15.5
|
6.0
|
9.0
|
|
26-Apr-14
|
4.82
|
6.29
|
6.52
|
15.7
|
12.4
|
12.2
|
17.0
|
10.0
|
7.5
|
|
28-Apr-14
|
7.04
|
6.86
|
6.75
|
9.4
|
4.7
|
4.9
|
11.5
|
3.0
|
4.5
|
|
30-Apr-14
|
6.87
|
6.94
|
4.67
|
11.8
|
8.5
|
7.1
|
9.5
|
3.0
|
9.5
|
Table 6-2 Summary
of Water Quality Monitoring Results for Contract 5
|
Date
|
Dissolved Oxygen
(mg/L)
|
Turbidity
(NTU)
|
Suspended Solids
(mg/L)
|
|
WM1
|
WM1- Control
|
WM1
|
WM1- Control
|
WM1
|
WM1- Control
|
|
2-Apr-14
|
7.15
|
7.53
|
941.5
|
800.0
|
749.5
|
399.0
|
|
4-Apr-14
|
7.47
|
7.60
|
48.8
|
9.1
|
44.5
|
2.0
|
|
7-Apr-14
|
7.52
|
8.12
|
45.0
|
10.7
|
31.0
|
5.5
|
|
9-Apr-14
|
6.46
|
7.39
|
38.0
|
8.4
|
20.0
|
4.5
|
|
11-Apr-14
|
8.95
|
8.54
|
37.0
|
8.4
|
47.5
|
5.0
|
|
15-Apr-14
|
9.30
|
9.54
|
31.6
|
13.6
|
51.5
|
9.5
|
|
17-Apr-14
|
9.60
|
8.13
|
22.3
|
12.7
|
21.0
|
11.0
|
|
22-Apr-14
|
8.33
|
8.17
|
23.4
|
8.0
|
24.0
|
3.5
|
|
24-Apr-14
|
8.60
|
8.33
|
20.2
|
15.1
|
25.0
|
7.0
|
|
26-Apr-14
|
7.72
|
7.34
|
15.4
|
8.2
|
16.0
|
3.0
|
|
28-Apr-14
|
8.18
|
8.67
|
13.2
|
9.9
|
8.5
|
2.0
|
|
30-Apr-14
|
8.13
|
6.72
|
35.9
|
18.7
|
30.5
|
7.0
|
Remark: bold and underlined indicated Limit Level
exceedance.
bold and italic indicated Action Level
exceedance.
Table 6-3 Breaches
of Water Quality Monitoring Criteria in Reporting Period
|
Location
|
Dissolved Oxygen
(mg/L)
|
Turbidity
(NTU)
|
Suspended Solids
(mg/L)
|
Total Exceedance
|
|
Action
|
Limit
|
Action
|
Limit
|
Action
|
Limit
|
Action
|
Limit
|
|
WM1
|
0
|
0
|
0
|
1
|
0
|
1
|
0
|
2
|
|
WM4
|
0
|
0
|
0
|
1
|
0
|
1
|
0
|
2
|
|
No of Exceedance
|
0
|
0
|
0
|
2
|
0
|
2
|
0
|
4
|
6.2.2
In view of the monitoring results of Dissolved Oxygen (DO) at W1 and W4, all the
measured results were higher than Action Level.
6.2.3
For
turbidity and SS, no Action Level and four (4) Limit Level exceedances were
recorded at WM4 and WM1 on 2 April 2014.
The Notification on Exceedances (NOEs) were
issued to all relevant parties upon the results confirmed. The investigation for the cause of
exceedance was completed and submitted to relevant parties.
Investigation for Exceedance at WM4 on 2
April 2014
6.2.4
According
to the site information provided by Chun Wo, only site
cleaning and maintenance works were carried out on 2 April 2014 due to
inclement weather. Photo records taken by out monitoring staff during the
course of monitoring show that the muddy water was coming from upstream of the
river at Nam Wah Po.
6.2.5
Having
reviewed the baseline monitoring data, it was noted that there is abnormally
high turbidity and suspended solids after rainfall. This implies that the
condition of the river is highly influenced by rainfall due to soil runoff.
This situation already existed before the commencement of the Project.
6.2.6
During
regular site inspection, it was observed that Chun Wo
has implemented water quality mitigation measures, such as the erection of a
sand bag barrier along the edge of the river adjacent to the works area to
prevent the storm runoff into the existing river.
6.2.7
In
view of the subsequent monitoring results, there were no exceedances recorded
on 4 and 7 April, which implied that the water quality was back to normal after
rainfall. Chun Wo was reminded to fully implement the
water mitigation measures as recommended in the implementation schedule for
environmental mitigation measures in the EM&A Manual.
6.2.8
Based
on the above investigation, it is considered that the exceedances were due to
rainfall and not related to the works under the Project.
Investigation for Exceedance at WM1 on 2
April 2014
6.2.9
According
to the site information provided by SRJV, no construction activity was carried
out on 2 April 2014 due to inclement weather. It was observed during site
inspection conducted by SRJV on 2 April 2014 that there was muddy water and
severe flooding throughout the Kong Yiu Channel. Moreover, a large amount of
refuse was flushed from upstream and accumulated at the monitoring point WM1.
6.2.10
Photo
records taken by our monitoring staff during the course of monitoring also
showed that muddy water was also observed at upstream control station WM1-C.
Moreover, pollutant was found discharged from a pipe into the existing stream
by others.
6.2.11
According
to the record by Hong Kong Observatory, continuous heavy rain was recorded on
30 March 2014 to 2 April 2014. The severe flooding may be the result of the
continuous heavy rain and backflow from Shenzhen River.
6.2.12
Having
reviewed the baseline monitoring data, it was noted that abnormally high
turbidity and suspended solids results were obtained after rainfall. This implies
that the condition of the river is highly influenced by the rainfall due to
soil runoff. This situation already existed before the commencement of the
Project.
6.2.13
SRJV
is reminded to fully implement the water mitigation measures as recommended in
the implementation schedule for the environmental mitigation measures in the
EM&A Manual. Based on above investigation, it is considered that the
exceedances on 2 April 2014 were not related to the works under the Project.
7.1.1
Waste management was carried out by an
on-site Environmental Officer or an Environmental Supervisor from time to time.
7.2.1
All types of waste arising from the
construction work are classified into the following:
l Construction
& Demolition (C&D) Material;
l Chemical
Waste;
l General
Refuse; and
l Excavated
Soil.
7.2.2
The quantities of waste for disposal in this
Reporting Period are summarized in Tables 7-1 and 7-2 and the Monthly
Summary Waste Flow Table is shown in Appendix L. Whenever possible, materials were reused
on-site as far as practicable.
Table 7-1 Summary
of Quantities of Inert C&D Materials for the Project
|
Type of Waste
|
Contract 3
|
Contract 5
|
Total Quantity for the Project
|
|
Quantity
|
Disposal Location
|
Quantity
|
Disposal Location
|
|
C&D Materials (Inert)
(in '000m3)
|
1.600
|
-
|
0
|
--
|
1.600
|
|
Reused in this Project (Inert)
(in '000 m3)
|
0.672
|
-
|
0
|
--
|
0.672
|
|
Reused in other Projects (Inert) (in '000 m3)
|
0
|
-
|
0
|
--
|
0
|
|
Disposal as Public Fill (Inert) (in '000 m3)
|
0.928
|
Tuen Mun 38
|
0
|
--
|
0.928
|
Table 7-2 Summary
of Quantities of C&D Wastes for
the Project
|
Type of Waste
|
Contract 3
|
Contract 5
|
Total Quantity for the Project
|
|
Quantity
|
Disposal Location
|
Quantity
|
Disposal Location
|
|
|
0
|
-
|
0.87
|
License collector
|
0.87
|
|
Recycled
Paper / Cardboard Packing (in '000m3)
|
0
|
-
|
0
|
--
|
0
|
|
Recycled Plastic (in '000m3)
|
0
|
-
|
0
|
--
|
0
|
|
Chemical Wastes (in '000m3)
|
0.020
|
License collector
|
0
|
--
|
0
|
|
General Refuses (in '000m3)
|
0.135
|
NENT
|
0.245
|
NENT
|
0.38
|
8.1.1
According to the approved EM&A Manual, the
environmental site inspection shall be formulation by ET Leader. Weekly environmental site inspections should
carry out to confirm the environmental performance.
The Contract 3
8.2.1
In the Reporting Period, joint site
inspection for Contract 3 to evaluate the site environmental performance has
been carried out by the RE, IEC, ET and the Contractor on 7, 16, 22, and 28 April 2014. No non-compliance was noted.
8.2.2
The findings / deficiencies of Contract
3 that observed during the weekly site inspection are listed in Table
8-1.
Table 8-1 Site
Observations for Contract 3
|
Date
|
Findings / Deficiencies
|
Follow-Up Status
|
|
7 April 2014
|
Ÿ The Contractor was reminded to ensure that
no obstacle is placed on the tree root at BC02 (SA14).
|
Ÿ The concerned trees at BC02 (SA12) were
being felled.
|
|
16 April 2014
|
Ÿ The Contractor was reminded to provide
wheel washing facilities at the site entrance/exit of SA3.
|
Ÿ Wheel washing facilities has been provided
to minimize dust impact.
|
|
22 April 2014
|
Ÿ No adverse environmental issues observed.
|
Ÿ NA
|
|
28 April 2014
|
Ÿ The Contractor should provide wheel washing
facilities at the entrance/exit of SA3.
|
Ÿ Wheel washing facilities has been provided
to minimize dust impact.
|
|
Ÿ The Contractor should modify the drilling
method and prevent muddy water from being released into the river body near
AM9b.
|
Ÿ The Contractor has modified the drilling
method and use form as the fluid media instead of water to avoid generation
of muddy water.
|
|
Ÿ The Contractor was reminded to prevent loss
of soil and release to the public road near SA11.
|
Ÿ The loose soil has been cleaned.
|
8.2.3
Moreover, the general housekeeping such as
tidiness of weekly and cleaniness of daily should be maintained in accordance
with the PS requirements.
The Contract 5
8.2.4
In the Reporting Period, joint site
inspection for Contract 5 to evaluate the site environmental performance has
been carried out by the RE, IEC, ET and the Contractor on 3, 10, 17, 24, and 30 April 2014. No non-compliance was noted.
8.2.5
The findings / deficiencies of Contract
5 that observed during the weekly site inspection are listed in Table
8-2.
Table 8-2 Site
Observations for Contract 5
|
Date
|
Findings
/ Deficiencies
|
Follow-Up
Status
|
|
3 April 2014
|
Ÿ Due to the heavy rain and thunderstorms, no major
construction activities were conducted.
|
Ÿ NA
|
|
10 April 2014
|
Ÿ The
Contractor should ensure that the water discharging system should comply with
the WPCO requirement.
|
Ÿ The
Contractor is noted.
|
|
|
Ÿ The Contractor was reminded to remove construction rock
materials that were left in the Kung Yui Channel.
|
Ÿ The
construction rock materials left on the Kung Yui Channel were removed.
|
|
|
Ÿ The Contractor was reminded to provide water spraying
regularly on dry haul road.
|
Ÿ Regular
water spraying was maintained to prevent fugitive dust on dry haul road.
|
|
17 April 2014
|
Ÿ The Contractor was reminded to clean up loose sand on
resident acess road near site office. The Contractor was reminded to provide
continuous improvement and to ensure public road cleanliness.
|
Ÿ Clean
public access road was observed, no loose soil observed on public areas
(close on 30 April 2014).
|
|
|
Ÿ An oil stain was observed on pipe jack area. The Contractor
was remidned that the contaminated soil shall be cleaned up immediately and
was requried to report the situation.
|
Ÿ The
Contractor treated and removed the contaminated soil as chemical waste.
|
|
|
Ÿ At site exit of retaining wall (Lin Ma Hang), labour shall
be provided when any vehicles are leaving the Project site.
|
Ÿ Labour was provided for vehicle washing.
|
|
|
Ÿ All drip trips are required to be checked on a regular
basis and the Contractor was reminded to plug the plughole of the drip tray
to prevent leakage from it.
|
Ÿ The
drip trip was plugged to prevent potential leakage.
|
|
|
Ÿ Chemical storage requirement is recommended to be included
in the tool-box for staff knowledge and awareness.
|
Ÿ Chemical
storage requirement was included in the tool-box.
|
|
24 April 2014
|
Ÿ Refer to previous observation Item 3 dated 17 April 2014,
labour was provided for vehicle washing, however the Contractor was reminded
to provide a noticeboard to enchance the vehicle washing system.
|
Ÿ Noticeboard
was provided at the entrance (Close on 30 April 2014).
|
|
|
Ÿ The contractor should review the wastewater treatment
system to ensure the quality of treated water is in accordance with the
liscense criteria.
|
Ÿ No
obvious muddy water was discharged at the outlet.
|
|
|
Ÿ Loose soil was observed at the discharge outlet, the
Contractor was reminded to provide mitigation measures to prevent potential
surface runoff into the river.
|
Ÿ Loose
soil was removed and also covered by concrete to prevent surface runoff.
|
|
|
Ÿ At the material storage area (LMH), stagnant water
accumulated should be drained away or applied with larvicidal oil to prevent
mosquitoes breeding.
|
Ÿ Larvicidal oil was provided to prevent mosquitoes from
breeding.
|
|
30 April 2014
|
Ÿ The
Contractor was reminded to check and maintain the mitigation measure for the
prevention of surface runoff into river.
Ÿ The
Contractor was reminded to improve the site staff environmental awareness and
knowledge, in particular the vehicle washing management site.
|
Ÿ The Contractor was noted.
Ÿ The Contractor was noted.
|
8.2.6
Moreover, the general housekeeping such as
tidiness of weekly and cleaniness of daily should be maintained in accordance
with the PS requirements. Addition,
regular basis cleaning the wheel washing bay is
reminded. Furthermore, works at
Bridge J Area, tree protected fences should be provided to protect all retained
tree. Moreover, the Contractor was
reminded setting up storage area as for all chemical waste dispose on site.
Other Contracts
8.2.7
Since the construction works at the Contract
2 and Contract 4 and Contract 6 are not yet commenced, no site inspection is
performed for these Contracts.
Contract 3
and 5
9.1.1
In
the Reporting Period, no complaint, summons and prosecution under the EM&A
Programme was lodged for Contracts 5. However, one environmental complaint was
received for Contract 3 on 16 April 2014.
9.1.2
Village
representatives (VRs) of Yuen Leng Village complained
wheels of some construction vehicles leaving the site of Chun Wo were not thoroughly washed.
9.1.3
Weekly
site inspection was carried out by the ET on 22 April 2014 subsequently to
check the environmental performance of the construction site as well as the
complaint regarding the wheel washing facilities. It was observed that wheel washing
facilities including wheel washing bays or water jets were provided at all
gates along the Tai Wo Service Road East, and adjacent roads to the gates. Watering at site exit/ entrance was
observed and the cleanliness was satisfactory.
9.1.4
Immediate
actions were taken out by Chun Wo and the following arrangements have been made
for each gate:
l Chun Wo has provided wheel washing facilities
and deployed necessary man powers to perform the wheel washing;
l The wheel washing bay will be desilted by specialist contractor regularly to maintain the
wheel washing performance;
l Water spraying was arranged to wash the public
road regularly;
l Road Sweeping was arranged to sweep the public
road regularly to maintain the tidiness of the road
9.1.5
Regard to complaint, Chun Wo will tighten up
the wheel washing operation to maintain the cleanliness of public roads in the
future. Also, ET will
regular check for the cleanliness of the site’ exit/ entrance during weekly
environmental site inspection.
9.1.6
The
statistical summary table of environmental complaint is presented in Tables 9-1, 9-2 and 9-3.
Table 9-1 Statistical
Summary of Environmental Complaints
|
Reporting Period
|
Contract No
|
Environmental
Complaint Statistics
|
|
Frequency
|
Cumulative
|
Complaint Nature
|
|
06 Nov 2013 - 31 Mar 2014
|
Contract 3
|
0
|
0
|
NA
|
|
16 Aug 2013 - 31 Mar 2014
|
Contract 5
|
1
|
1
|
(1) Construction
Dust
|
|
1 – 30 Apr 2014
|
Contract 3
|
1
|
1
|
(1) Construction
Dust
|
|
Contract 5
|
0
|
1
|
NA
|
Table 9-2 Statistical
Summary of Environmental Summons
|
Reporting Period
|
Contract No
|
Environmental
Summons Statistics
|
|
Frequency
|
Cumulative
|
Complaint Nature
|
|
06 Nov 2013 - 31 Mar 2014
|
Contract 3
|
0
|
0
|
NA
|
|
16 Aug 2013 - 31 Mar 2014
|
Contract 5
|
0
|
0
|
NA
|
|
1 – 30 Apr 2014
|
Contract 3
|
0
|
0
|
NA
|
|
Contract 5
|
0
|
0
|
NA
|
Table 9-3 Statistical
Summary of Environmental Prosecution
|
Reporting Period
|
Contract No
|
Environmental
Prosecution Statistics
|
|
Frequency
|
Cumulative
|
Complaint Nature
|
|
06 Nov 2013 - 31 Mar 2014
|
Contract 3
|
0
|
0
|
NA
|
|
16 Aug 2013 - 31 Mar 2014
|
Contract 5
|
0
|
0
|
NA
|
|
1 – 30 Apr 2014
|
Contract 3
|
0
|
0
|
NA
|
|
Contract 5
|
0
|
0
|
NA
|
The Other Contracts
9.1.7
Since the construction works at the Contract
2, Contract 4 and Contract 6 are not yet commenced, no environmental complaint,
summons and prosecution under the EM&A Programme are registered in the Reporting
Period.
10.1.1
The environmental mitigation measures that
recommended in the Implementation Schedule for Environmental Mitigation
Measures (ISEMM) in the approved EM&A Manual covered the issues of dust,
noise, water and waste and they are summarized presented in Appendix
M.
10.1.2
All contracts under the Project shall be
implementing the required environmental mitigation measures according to the approved
EM&A Manual as subject to the site condition. Environmental mitigation measures
generally implemented by Contracts 3 and 5 in this Reporting Period are
summarized in Table 10-1.
Table 10-1 Environmental
Mitigation Measures
|
Issues
|
Environmental
Mitigation Measures
|
|
Water Quality
|
· Wastewater to be treated by the
filtration systems i.e. sedimentation tank or AquaSed before to discharge.
|
|
Air Quality
|
· Maintain damp / wet surface
on access road
· Keep slow speed in the sites
· All vehicles must use wheel
washing facility before off site
· Sprayed water during
breaking works
· A cleaning
truck was regularly performed on the public road to prevent fugitive dust emission
|
|
Noise
|
· Restrain operation time of
plants from 07:00 to 19:00 on any working day except for Public Holiday and
Sunday.
· Keep good maintenance of
plants
· Place noisy plants away from
residence or school
· Provide noise barriers or
hoarding to enclose the noisy plants or works
· Shut down the plants when
not in used.
|
|
Waste and Chemical Management
|
· On-site sorting prior to
disposal
· Follow requirements and
procedures of the “Trip-ticket System”
· Predict required quantity of
concrete accurately
· Collect
the unused fresh concrete at designated locations in the sites for subsequent
disposal
|
|
General
|
· The site was generally kept
tidy and clean.
|
10.2.1
Construction activities as undertaken in the
coming month for the Project lists below:
Contract 3
Ÿ
Cable detection and trial trenches
Ÿ
Pre-drilling works and piling works
Ÿ
Tree felling and transplanting works
Ÿ
Pile cap works
Ÿ
Waterworks
Ÿ
Slope upgrading works
Ÿ
Noise barrier footing
Ÿ
Laying of concrete pipe works
Ÿ
Bored pile wall construction
Ÿ
Pier Construction
Ÿ
Piling works for Bridge
E
Ÿ
Site formation
demolition
Ÿ
Demolition
Ÿ
Diversion of DN600 &
DN1400
Contract 5
Ÿ
Construction of retaining wall No.1
Ÿ
Construction of Village House at RS4
Ÿ
Piling works at footbridge
Ÿ
Construction of Western pedestrian subway at
LMH
Ÿ
Pipe jacking across Kong Yuen River
Ÿ
Transplantation, Pruning/felling of existing
tree
Ÿ
Drainage works at proposed and existing LMH
Road
Ÿ
Formation Works at BCP Area
Ÿ
Construction of Depressed Road at BCP3
Ÿ
Filing Works for ArcHD
permanent office
Ÿ
Construction of substructure and superstructe of Bridge J
Ÿ
Water works at proposed and existing LMH Road
Ÿ
Water works at proposed and existing LMH Road
Ÿ
Construction of footbridge and staircase at
RS4
Ÿ
Construction of Eastern pedestrian subway and
pump room at LMH.
10.3.1
Key issues to be considered in the coming
month for Contracts 3 and 5 include:
Ÿ
Implementation of control
measures for rainstorm;
Ÿ
Regular clearance of
stagnant water during wet season;
Ÿ
Implementation of dust
suppression measures at all times;
Ÿ
Potential wastewater
quality impact due to surface runoff;
Ÿ
Potential fugitive
dust quality impact due from the dry/loose/exposure soil surface/dusty
material;
Ÿ
Disposal of empty
engine oil containers within site area;
Ÿ
Ensure dust suppression measures are
implemented properly;
Ÿ
Sediment catch-pits and silt removal
facilities should be regularly maintained;
Ÿ
Management of chemical wastes;
Ÿ
Discharge of site effluent to the nearby
wetland, stockpiling or disposal of materials, and any dredging or construction
area at this area are prohibited;
Ÿ
Follow-up of improvement on general waste
management issues; and
Ÿ
Implementation of construction noise preventative
control measures
10.3.2
For other Contracts, no environmental issue
is considered due to these contracts still yet to commence.
11.1.1
This is 9th
monthly EM&A report presenting the monitoring results and inspection
findings for the Reporting Period from 1 to 30 April 2014.
11.1.2
No 24-hour or 1-hour TSP monitoring results
that triggered the Action or Limit Levels were recorded. No NOEs or the
associated corrective actions were therefore issued.
11.1.3
No noise complaint (which is an Action Level
exceedance) was received and no construction noise measurement results that
exceeded the Limit Level were recorded in the Reporting Period. No NOEs or the associated corrective actions were therefore
issued.
11.1.4
For water quality monitoring, no Action Limit
and four (4) Limit Level exceedances of the parameters turbidity and SS were
recorded at WM4 and WM1. The
Notification on Exceedances (NOEs) was issued to all relevant parties. Investigation findings concluded that
that the exceedances on 2 April 2014 were not due to the Project works.
11.1.5
In the Reporting Period, one environmental
complaint was received for Contract 3 on 16 April 2014 regarding to the
construction dust. Measures have
been taken to ensure regular wheel washing of vehicles leaving the construction
sites, to ensure the maintenance of the wheel washing facilities, and the
maintenance of the cleanliness of the public roads. Investigation report has been submitted
to relevant parties.
11.1.6
No environmental complaint, notification of
summons or successful prosecution under the EM&A Programme of the Liantang/Heung Yuen Wai Boundary
Control Point and Associated Works was received
in the reporting period for Contract 5.
11.1.7
During the Reporting Period, four (4) and
five (5) events of Joint site inspection by the RE, IEC, ET and Main-contractor
were carried out for Contract 3 and Contract 5 respectively in accordance with
the EM&A Manual stipulation. No
non-compliance observed during the site inspection. During dry season, air quality
mitigation measures such as increase the water spray frequency (at least eight
times per day) in haul road to prevent construction dust emission is
reminded. The environmental
performance of the Project of Contracts 3 and 5 was therefore considered as
satisfactory.
11.2.1
During wet season, muddy water or other water
pollutants from site surface runoff into Kong Yiu Channel and Ma Wat Channel
will be key environment issue.
Water quality mitigation measures to prevent surface runoff into nearby
water bodies should be paid on special attention.
11.2.2
During dry season,
special attention should be paid on the potential construction dust impact
since most of the construction sites are adjacent to villages. The Contractor should fully implement
the construction dust mitigation measures properly.
11.2.3
Construction noise
should be a key environmental impact during the works. The noise mitigation measures such as
use of quiet plants or temporary noise barrier installation at the construction
noise predominate area should be implemented as accordance with the EM&A
requirement.
