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Job No.: TCS00670/13 |
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Agreement No. CE 45/2008
(CE) Liantang/Heung Yuen Wai Boundary Control Point
and Associated Works |
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Monthly Environmental Monitoring and Audit Report (No.29)
¡V December 2015 |
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Prepared For |
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Civil Engineering and Development Department (CEDD) |
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Date |
Reference No. |
Prepared By |
Certified By |
15
January 2016 |
TCS00694/13/600/R0093v3 |
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Nicola Hon (Environmental Consultant) |
Tam Tak Wing (Environmental Team Leader) |
Version |
Date |
Remarks |
1 |
12 January 2016 |
First
Submission |
2 |
15 January 2016 |
Amended
against the IEC¡¦s comments on 13 January 2016 |
3 |
15 January 2016 |
Amended against the
IEC¡¦s comments on 15 January 2016 |
executive summary
ES01
This is the 29th monthly EM&A report presenting the monitoring
results and inspection findings for the reporting period from 1 to 31 December 2015
(hereinafter ¡¥the Reporting Period¡¦).
Environmental
Monitoring and Audit Activities
ES02
To facilitate the project management and
implementation, Liantang/Heung Yuen Wai Boundary Control Point and Associated Works of the
Project is divided to six CEDD contracts including Contract 2 (CV/2012/08),
Contract 3 (CV/2012/09), Contract 4 (TCSS),
Contract 5 (CV/2013/03), Contract 6 (CV/2013/08) and Contract 7 (NE/2014/03) and
an ArshSD contract (Contract SS C505).
ES03
In the Reporting Period, the construction
works for Contract 6 was commenced on 23 October 2015 and therefore the active
contracts would be included Contract 2, Contract 3, Contract 5, Contract 6 and
Contract SS C505. Environmental
monitoring activities under the EM&A programme in
the Reporting Period are summarized in the following table.
Environmental Aspect |
Environmental
Monitoring Parameters / Inspection |
Reporting Period |
|
Number of Monitoring
Locations to undertake |
Total Occasions |
||
Air Quality |
1-hour TSP |
9 |
147 |
24-hour TSP |
9 |
54 |
|
Construction Noise |
Leq(30min) Daytime |
10 |
55 |
Water Quality |
Water sampling |
WM1 & WM1-C, WM3 &WM3-C WM4, WM4-CA &WM4-CB |
13(*) |
WM2A, WM2A-C & WM2B-C |
12 (*) |
||
WM2B |
15 (*) |
||
Joint Site Inspection / Audit |
IEC, ET, the Contractor and RE joint site Environmental Inspection and
Auditing |
Contract 2 |
5 |
Contract 3 |
4 |
||
Contract 5 |
5 |
||
Contract 6 |
5 |
||
Contract SS C505 |
5 |
(*) Monitoring day
Breach of Action and Limit (A/L) Levels
ES04
In the Reporting Period, no air quality and
construction noise exceedance was registered for the Project. For water quality, a total of thirty-five
(35) Action/ Limit Level exceedances, namely eighteen (18) exceedances of turbidity
and seventeen (17) exceedances of suspended solids recorded. The summary of exceedance in the
Reporting Period is shown below.
Environmental
Aspect |
Monitoring Parameters |
Action Level |
Limit Level |
Event & Action |
||
NOE Issued |
Investigation Result |
Corrective Actions |
||||
Air Quality |
1-hour TSP |
0 |
0 |
0 |
-- |
-- |
24-hour TSP |
0 |
0 |
0 |
-- |
-- |
|
Construction Noise |
Leq(30min) Daytime |
0 |
0 |
0 |
-- |
-- |
Water Quality |
DO |
0 |
0 |
0 |
-- |
-- |
Turbidity |
0 |
18 |
18 |
The Contractor of C6 was advised to improve
the water mitigation measure as per the ISEMM of the EM&A Manual |
Improvement works have been
undertaken by the Contractor of C6 |
|
SS |
0 |
17 |
17 |
ES05
In this Reporting Period, two (2) documented
environmental complaint was received and lodged for Contracts 6 regarding construction
dust and muddy water discharge on 1 and 16 December 2015 respectively. Follow up actions have been undertaking
by the Contractor to resolve the deficiencies and investigation report
conducted by ET had submitted to all relevant parties.
Notification of Summons and Successful Prosecutions
ES06
No environmental summons or successful
prosecutions were recorded in the Reporting Period.
ES07
No reporting changes were made in the
Reporting Period.
ES08
In this Reporting Period, joint site inspection to evaluate the site
environmental performance at Contract 2 has been carried out by
the RE, IEC, ET and the Contractor on 4, 11, 18, 23 and 30 December 2015. No
non-compliance was noted.
ES09
In the Reporting Period, joint site
inspection to evaluate the site environmental performance at Contract
3 has been carried out by the RE, IEC, ET and the Contractor on 7, 16, 21 and 28 December 2015. No non-compliance was noted.
ES10
In the Reporting Period, joint site
inspection to evaluate the site environmental performance at Contract
5 has been carried out by the RE, IEC, ET and the Contractor on 3, 10, 16, 24 and 31 December 2015. No non-compliance was noted.
ES11
In the Reporting Period, joint site
inspection to evaluate the site environmental performance at Contract
6 has been carried out by the RE, IEC, ET and the Contractor on 3, 10, 17, 23 and 30 December 2015. No non-compliance was noted.
ES12
In the Reporting Period, joint site
inspection to evaluate the site environmental performance at Contract
SS C505 has been carried out by the RE, IEC, ET and the Contractor on 2, 9, 16, 23 and 30 December 2015. No non-compliance was noted.
Future Key Issues
ES13
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.
ES14
The Contractor was also
reminded to prevent muddy water or other water pollutants from site surface flow
to local stream such as Kong Yiu
Channel, Ma Wat Channel, Ping Yuen River
or public area. Water
quality mitigation measures to prevent surface runoff into nearby water bodies
or public areas should paid attention and fully implemented.
ES15
Construction noise would
be a key environmental issue during construction work of the Project. Noise mitigation measures such as using
quiet plants should be implemented in accordance with the EM&A requirement.
Table of Contents
2 Project
Organization and Construction progress
2.1 Construction
Contract Packaging
2.5 Summary of Environmental Submissions
3 Summary
of Impact Monitoring Requirements
3.4 Monitoring
Frequency and Period
3.8 Derivation
of Action/Limit (A/L) Levels
3.9 Data
Management and Data QA/QC Control
4.2 Air
Quality Monitoring Results in Reporting Month
5 Construction
Noise Monitoring
5.2 Noise
Monitoring Results in Reporting Month
6.2 Results
of Water Quality Monitoring
7.2 Records
of Waste Quantities
8.2 Findings
/ Deficiencies During the Reporting Month
9 Environmental
Complaint and Non-Compliance
9.1 Environmental
Complaint, Summons and Prosecution
10 Implementation
Status of Mitigation Measures
10.2 Tentative
Construction Activities in the Coming Month
10.3 Key
Issues for the Coming Month
11 Conclusions
and Recommendations
List
of TABLES
Table 3-1 Summary
of EM&A Requirements
Table 3-2 Impact
Monitoring Stations - Air Quality
Table 3-3 Impact
Monitoring Stations - Construction Noise
Table 3-4 Impact
Monitoring Stations - Water Quality
Table 3-5 Air
Quality Monitoring Equipment
Table 3-6 Construction
Noise Monitoring Equipment
Table 3-7 Water
Quality Monitoring Equipment
Table 3-8 Action
and Limit Levels for Air Quality Monitoring
Table 3-9 Action
and Limit Levels for Construction Noise
Table 3-10 Action and Limit
Levels for Water Quality
Table 4-1 Summary
of 24-hour and 1-hour TSP Monitoring Results ¡V AM1a
Table 4-2 Summary
of 24-hour and 1-hour TSP Monitoring Results ¡V AM2
Table 4-3 Summary
of 24-hour and 1-hour TSP Monitoring Results ¡V AM3
Table 4-4 Summary
of 24-hour and 1-hour TSP Monitoring Results ¡V AM4B
Table 4-5 Summary
of 24-hour and 1-hour TSP Monitoring Results ¡V AM5a
Table 4-6 Summary
of 24-hour and 1-hour TSP Monitoring Results ¡V AM6
Table 4-7 Summary
of 24-hour and 1-hour TSP Monitoring Results ¡V AM7a
Table 4-8 Summary
of 24-hour and 1-hour TSP Monitoring Results ¡V AM8
Table 4-9 Summary
of 24-hour and 1-hour TSP Monitoring Results ¡V AM9b
Table 5-1 Summary
of Construction Noise Monitoring Results (Contract 3 and 5)
Table 5-2 Summary
of Construction Noise Monitoring Results (Contract 2 and 6)
Table 6-1 Summary
of Water Quality Monitoring Results for Contract 2 and 3
Table 6-2 Summary
of Water Quality Monitoring Results for Contract 5 and SS C505
Table 6-3 Summary
of Water Quality Monitoring Results for Contract 6
Table 6-4 Summary
of Water Quality Monitoring Results for Contract 2 and 6
Table 6-5 Breaches
of Water Quality Monitoring Criteria in Reporting Period
Table 7-1 Summary
of Quantities of Inert C&D Materials
Table 7-2 Summary
of Quantities of C&D Wastes
Table 8-1 Site
Observations for Contract 2
Table 8-2 Site
Observations for Contract 3
Table 8-3 Site
Observations for Contract 5
Table 8-4 Site
Observations for Contract 6
Table 8-5 Site
Observations for Contract SS C505
Table 9-1 Statistical
Summary of Environmental Complaints
Table 9-2 Statistical
Summary of Environmental Summons
Table 9-3 Statistical
Summary of Environmental Prosecution
Table 10-1 Environmental
Mitigation Measures
List of Appendices
Appendix A Layout
Plan of the Project
Appendix B Organization
Chart
Appendix C 3-month
rolling construction program
Appendix D Designated
Monitoring Locations as Recommended in the Approved EM&A Manual
Appendix E Monitoring
Locations for Impact Monitoring
Appendix F Calibration
Certificate of Monitoring Equipment and HOKLAS-accreditation Certificate of the
Testing Laboratory
Appendix G Event
and Action Plan
Appendix H Impact
Monitoring Schedule
Appendix I Database
of Monitoring Result
Appendix J Graphical
Plots for Monitoring Result
Appendix K Meteorological
Data
Appendix L Waste
Flow Table
Appendix M Implementation
Schedule for Environmental Mitigation Measures
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/C granted on 12 March 2015.
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 ¡V this section
comprises at-grade and viaducts and includes the improvement works at Lin Ma
Hang Road;
2)
Ping Yeung to Wo Keng Shan ¡V 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 ¡V 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 ¡V 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 ¡V 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 ¡V 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 29th
monthly EM&A report presenting the monitoring results and inspection
findings for reporting period from 1 to 31 December 2015.
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:
¡P
Contract 2 (CV/2012/08)
¡P
Contract 3 (CV/2012/09)
¡P
Contract 4 (NE/2014/02)
¡P
Contract 5 (CV/2013/03)
¡P
Contract 6 (CV/2013/08)
¡P
Contract 7 (NE/2014/03)
¡P
ArchSD Contract No. SS C505
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 was commenced on 19 May 2014. Major Scope of Work of the Contract 2 is
listed below:
¡P
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;
¡P
construction of a
ventilation adit tunnel and the mid-ventilation
building;
¡P
construction of
the north and south portal buildings of the Lung Shan Tunnel and their
associated slope works;
¡P
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;
¡P
construction of
Tunnel Administration Building adjacent to Wo Keng
Shan Road and the associated E&M and building services works; and
¡P
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:
¡P
construction of
four link roads connecting the existing Fanling
Highway and the south portal of the Lung Shan Tunnel;
¡P
realignment of
the existing Tai Wo Service Road West and Tai Wo Service Road East;
¡P
widening of the
existing Fanling Highway (HyD¡¦s
entrustment works);
¡P
demolishing
existing Kiu Tau vehicular bridge and Kiu Tau footbridge and reconstruction of the existing Kiu Tau Footbridge (HyD¡¦s
entrustment works); and
¡P
construction of associated
footpath, slopes, retaining structures, drainage, sewerage, waterworks,
landscaping works and other ancillary works.
Contract 4 (NE/2014/02)
2.1.5
Contract 4 has not yet been 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:
¡P
site formation of about 23
hectares of land for the development of the BCP;
¡P
construction of an
approximately 1.6 km long perimeter road at the BCP including a 175m long
depressed road;
¡P
associated
diversion/modification works at existing local roads and junctions including
Lin Ma Hang Road;
¡P
construction of pedestrian
subway linking the BCP to Lin Ma Hang Road;
¡P
provision of resite area with supporting infrastructure for reprovisioning of the affected village houses; and
¡P
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 awarded in June 2015 and
construction work was commenced on 23 October 2015. Major Scope of Work of the Contract 6 would
be included below:
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;
associated diversion/modification works at access roads to the resite of Chuk Yuen Village;
provision of sewage collection, treatment and disposal facilities for
the BCP and the resite of Chuk
Yuen Village;
construction of a pedestrian subway linking the BCP to Lin Ma Hang
Road;
provisioning of the affected facilities including Wo Keng Shan Road garden; and
construction of associated footpath, slopes, retaining
structures, drainage, sewerage, waterworks, landscaping works and other
ancillary works.
Contract 7 (NE/2014/03)
2.1.8
Contract 7 has awarded in December 2015 and
the construction works of Contract 7 will tentatively commence in February 2016.
Major Scope of Work of the Contract
7 would be included below:
construction of the Hong Kong Special
Administrative Region (HKSAR) portion of four vehicular bridge
construction of one pedestrian bridge crossing Shenzhen (SZ) River
(cross boundary bridges)
ArchSD Contract No. SS
C505
2.1.9
SS C505 has awarded in July 2015 and
construction work was commenced on 1 September 2015. Major Scope of Work of the SS C505 would
be included below:
passenger-related facilities including
processing kiosks and examination facilities for private cars and coaches,
passenger clearance building and halls, the interior fitting works for the
pedestrian bridge crossing Shenzhen River, etc.;
cargo processing facilities including kiosks
for clearance of goods vehicles, customs inspection platforms, X-ray building,
etc.;
accommodation for the facilities inside of the
Government departments providing services in connection with the BCP;
transport-related facilities inside the BCP
including road networks, public transport interchange, transport drop-off and
pick-up areas, vehicle holding areas and associated road furniture etc;
a public carpark; and
other ancillary
facilities such as sewerage and drainage, building services provisions and
electronic systems, associated environmental mitigation measure and landscape
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.
Architectural
Services Department (ArchSD)
2.2.3
ArchSD acts as
the works agent for Development Bureau (DEVB), for Contract SS C505 Liantang/ Heung Yuen Wai Boundary Control Point (BCP) ¡V BCP
Buildings and Associated Facilities.
Environmental
Protection Department (EPD)
2.2.4
EPD is the statutory enforcement body for
environmental protection matters in Hong Kong.
Ronald Lu
& Partners (Hong Kong) Ltd (The Architect)
2.2.5
Ronald Lu & Partners (Hong Kong) Ltd is
appointed by ArchSD as an Architect for Contract SS
C505 Liantang/ Heung Yuen Wai Boundary Control Point
(BCP) ¡V BCP Buildings and Associated Facilities. It responsible for overseeing the
construction works of Contract SS C505 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 Architect 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¡¦ and ET¡¦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
Regulation of Shenzhen River Stage 4 (RSR 4)¡¨ Project discussing regarding the
cumulative impact issues.
Engineer
or Engineers Representative (ER)
2.2.6
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:
¡P
Monitor the Contractors¡¦ compliance with
contract specifications, including the implementation and operation of the
environmental mitigation measures and their effectiveness
¡P
Monitor Contractors¡¦s,
ET¡¦s and IEC¡¦s compliance with the requirements in the Environmental Permit
(EP) and EM&A Manual
¡P
Facilitate ET¡¦s implementation of the
EM&A programme
¡P
Participate in joint site inspection by the
ET and IEC
¡P
Oversee the implementation of the agreed
Event / Action Plan in the event of any exceedance
¡P
Adhere to the procedures for carrying out
complaint investigation
¡P
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)
2.2.7
There will be one contractor for each
individual works contract. Once the contractors are appointed, EPD, ET and IEC
will be notified the details of the contractor.
2.2.8
The Contractor for Contracts under CEDD
should report to the ER. For ArchSD Contract, the
Contractor should report to the Architect or Architect¡¦s Representative (AR).
The duties and responsibilities of the Contractor are:
¡P
Comply with the relevant contract conditions
and specifications on environmental protection
¡P
Employ an Environmental Team (ET) to
undertake monitoring, laboratory analysis and reporting of EM &A Facilitate
ET¡¦s monitoring and site inspection activities
¡P
Participate in the site inspections by the ET
and IEC, and undertake any corrective actions
¡P
Provide information / advice to the ET
regarding works programme and activities which may
contribute to the generation of adverse environmental impacts
¡P
Submit proposals on mitigation measures in
case of exceedances of Action and Limit levels in accordance with the Event /
Action Plans
¡P
Implement measures to reduce impact where
Action and Limit levels are exceeded
¡P
Adhere to the procedures for carrying out
complaint investigation
Environmental Team (ET)
2.2.9
Once the ET is appointed, the EPD, CEDD, ER, Architect
and IEC will be notified the details of the ET.
2.2.10
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:
¡P
Monitor and audit various environmental
parameters as required in this EM&A Manual
¡P
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
¡P
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
¡P
Monitor compliance with conditions in the EP,
environmental protection, pollution prevention and control regulations and
contract specifications
¡P
Audit environmental conditions on site
¡P
Report on the environmental monitoring and
audit results to EPD, the ER, the Architect, the lEC
and Contractor or their delegated representatives
¡P
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
¡P
Liaise with the IEC on all environmental
performance matters and timely submit all relevant EM&A proforma
for approval by IEC
¡P
Advise the Contractor(s) on environmental
improvement, awareness, enhancement measures etc., on site
¡P
Adhere to the procedures for carrying out
complaint investigation
¡P
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)
2.2.11
One IEC will be employed for this Project.
Once the IEC is appointed, EPD, ER, the Architect and ET will be notified the
details of the IEC.
2.2.12
The Independent Environmental Checker (IEC)
should not be in any way an associated body of the Contractor 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 appointment of IEC should be subject to the approval of
EPD. The IEC should:
¡P
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
¡P
Review and audit all aspects of the EM&A programme implemented by the ET
¡P
Review and verify the monitoring data and all
submissions in connection with the EP and EM&A Manual submitted by the ET
¡P
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
¡P
Check compliance with the agreed Event /
Action Plan in the event of any exceedance
¡P
Check compliance with the procedures for
carrying out complaint investigation
¡P
Check the effectiveness of corrective
measures
¡P
Feedback audit results to ET by signing off
relevant EM&A proforma
¡P
Check that the mitigation measures are
effectively implemented
¡P
Verify the log-book(s) mentioned in Condition
2.2 of the EP, notify the Director by fax, within one working day of receipt of
notification from the ET Leader of each and every occurrence, change of
circumstances or non-compliance with the EIA Report and/or the EP, which might
affect the monitoring or control of adverse environmental impacts from the
Project
¡P
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
¡P
Liaison with the client departments,
Engineer/Engineer¡¦s Representative, the Architect, ET, lEC
and the Contractor 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;
(b)
Widening of Fanling
Highway ¡V Tai Hang to Wo Hop Shek
Interchange ¡V Contract No. HY/2012/06;
(c)
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 2, 3,
5, 6 and SS C505 and they are summarized in below. Moreover, the 3-month rolling
construction program of the Contracts 2, 3, 5, 6 and SS C505 is enclosed in Appendix
C.
Contract 2 (CV/2012/08)
2.4.2
The
contract commenced in May 2014. In this Reporting Period, construction
activities conducted are listed below:
Mid-Vent Portal |
Cavern excavation
Tube excavation (NB + SB)
Adit invert
slab
Building works foundation |
North Portal |
Slope stablilization
and retaining wall
Northbound top heading excavation
Tunnel Boring Machine excavation |
South Portal |
Southbound and Northbound Drill and Blast excavation
Building works foundation and substructure |
Admin Building |
Building works foundation |
Contract 3 (CV/2012/09)
2.4.3
The Contract commenced in November 2013. In this Reporting Period, construction
activities conducted are listed below:
Cable
detection and trial trenches
Decking
construction for Bridge E
E&M
work for new valve control & Telemetry House
Filling
works at Tong Hang East
FRP Lining
on existing water main
Storm
drain laying
Noise
barrier construction
Pier /
pier table construction
Pile cap
works
Portal
beam construction
Pre-drilling
Retaining
Wall construction
Road works
at Fanling Highway
Sewer
works
Tree
felling works
Utilities
duct laying
Viaduct
segment erection
Slope
works
Contract 4 (Contract number to be assigned)
2.4.4
The contract has not yet been awarded.
Contract 5 (CV/2013/03)
2.4.5
The Contract awarded in April 2013 and
commenced on August 2013. In this
Reporting Period, construction activities conducted are listed below:
Construction
of rising main at existing Lin Ma Hang (LMH) Road
Drainage
works at Road L15
Filling works for ArchSD Depot
Construction
of Depressed Road at BCP3
Additional
works (Access Works) for Village House at RS4
Drainage
works at existing LMH Road
Brick
laying at footpath of proposed LMH road
Preparation
works for planting at proposed LMH road
Remaining
formation works at BCPB Area
Installation
of Underground Utility (UU) at proposed and existing LMH road
Road work
(kerb laying) for L15 road
Irrigation
at proposed LMH Road
Water works at existing LMH Road
Bituminous
laying at existing & proposed LMH road
Construction of Pavilion at Chung Yuen Ha
Village
Contract 6 (CV/2013/08)
2.4.6
Contract 6 has awarded in June 2015 and
construction work was commenced on 23 October 2015. In this Reporting Period,
construction activities conducted are listed below:
Site
Clearance
Slope
Works
Site
Accesses Construction
Ground Investigation
(GI) Works
Soil nail
Bored
piling
Contract 7 (NE/2014/03)
2.4.7
Construction works of Contract 7 did not
commence in the reporting period
Contract SS C505
2.4.8
Contract SS C505 has awarded in July 2015 and
construction work was commenced on 1 September 2015. In this Reporting Period, construction
activities conducted are listed below:
Excavation
& fill works
Predrilling
Percussive
piling
Pre-boring
Bored
piling
Pile caps
Site
office set-up
Structural
works
Assembly
of crawler crane
2.5.1
In according to the EP, the required documents
have submitted to EPD for retention which listed in below:
Project Layout Plans of Contracts 2, 3, 5, 6 and SS C505
Landscape Plan
Topsoil Management Plan
Environmental Monitoring and Audit Programme
Baseline Monitoring Report (TCS00690/13/600/R0030v3) for the Project
Waste Management Plan of the Contracts 2, 3, 5,
6 and SS C505
Contamination Assessment Plan (CAP) for Po
Kat Tsai, Loi Tung and the workshops in Fanling
Contamination Assessment Report (CAR) for Po
Kat Tsai, Loi Tung and the workshops in Fanling
Vegetation Survey Report
Woodland Compensation Plan
Habitat Creation Management Plan
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 |
||||
Ref. no. |
Effective Date |
Expiry Date |
||||
Contract 2 |
||||||
1 |
Air pollution Control (Construction Dust) Regulation |
Ref No.: 368864 |
31 Dec 2013 |
Till Contract ends |
||
2 |
Chemical Waste Producer Registration |
North Portal Waste
Producers Number: No.5213-652-D2523-01 |
25 Mar 2014 |
Till Contract ends |
||
Mid-Vent Portal Waste
Producers Number: No.5213-634-D2524-01 |
25 Mar 2014 |
Till Contract ends |
||||
South Portal Waste
Producers Number: No.5213-634-D2526-01 |
9 Apr 2014 |
Till Contract ends |
||||
3 |
Water Pollution Control Ordinance - Discharge License |
No.WT00018374-2014 |
3 Mar 2014 |
28 Feb 2019 |
||
No.: W5/1I389 |
28 Mar 2014 |
31 Mar 2019 |
||||
No.: W5/1I390 |
19 June 2014 |
31 Mar 2019 |
||||
No.: W5/1I391 |
28 Mar 2014 |
17 Dec 2015 |
||||
No. WT00023063-2015 (Variation of W5/1I391) |
18 Dec 2015 |
31-Mar -2019 |
||||
No.: W5/1I392 |
28 Mar 2014 |
31 Mar 2019 |
||||
4 |
Waste Disposal Regulation - Billing Account for
Disposal of Construction Waste |
Account No. 7019105 |
8 Jan 2014 |
Till Contract ends |
||
5 |
Construction Noise Permit |
GW-RN0479-15 |
31 Jul 2015 |
29 Jan 2016 |
||
GW-RN0562-15 |
7 Sep 2015 |
6 Dec 2015 |
||||
GW-RN0606-15 |
25 Sep 2015 |
24 Nov 2015 |
||||
GW-RN0678-15 |
1 Nov 2015 |
31 Jan 2016 |
||||
GW-RN0718-15 |
25 Nov 2015 |
24 Jan 2015 |
||||
GW-RN0724-15 |
17 Nov 2015 |
16 Dec 2015 |
||||
GW-RN0738-15 |
18 Nov 2015 |
8 May 2016 |
||||
GW-RN0760-15 |
26 Nov 2015 |
27 Feb 2016 |
||||
GW-RN0761-15 |
28 Nov 2015 |
27 Feb 2016 |
||||
GW-RN0795-15 |
7 Dec 2015 |
6 Jun 2016 |
||||
GW-RN0838-15 |
24-Dec-2015 |
23-Feb-2016 |
||||
GW-RN0875-15 |
24-Dec-2015 |
23-Feb-2016 |
||||
GW-RN0893-15 |
01-Jan-2016 |
27-Jun-2016 |
||||
Contract 3 |
||||||
1 |
Air pollution Control (Construction Dust) Regulation |
Ref. No: 362101 |
17 Jul 2013 |
Till Contract ends |
||
2 |
Chemical Waste Producer Registration |
Waste Producers Number:
No.:5113-634-C3817-01 |
7 Oct 2013 |
Till Contract ends |
||
3 |
Water Pollution Control Ordinance - Discharge License |
No.:WT00016832 ¡V 2013 |
28 Aug 13 |
31 Aug
2018 |
||
4 |
Waste Disposal Regulation - Billing Account for
Disposal of Construction Waste |
Account No. 7017914 |
2 Aug 13 |
Till Contract ends |
||
5 |
Construction Noise Permit |
GW-RN0334-15 |
8 Jun 2015 |
7 Dec 2015 |
||
GW-RN0428-15 |
9 Ju1 2015 |
31 Dec 2015 |
||||
GW-RN0473-15 |
29 Jul 2015 |
17 Dec 2015 |
||||
GW-RN0461-15 |
5 Aug 2015 |
8 Jan 2016 |
||||
GW-RN0495-15 |
12 Aug 2015 |
11 Feb 2016 |
||||
GW-RN0497-15 |
14 Aug 2015 |
13 Feb 2016 |
||||
GW-RN0525-15 |
29 Aug 2015 |
13 Feb 2016 |
||||
GW-RN0542-15 |
1 Sep 2015 |
25 Feb 2016 |
||||
GW-RN0608-15 |
28 Sep 2015 |
29 Feb 2016 |
||||
GW-RN0633-15 |
15 Oct 2015 |
29 Feb 2016 |
||||
GW-RN0655-15 |
1 Dec 2015 |
29 Feb 2016 |
||||
GW-RN0677-15 |
26 Oct 2015 |
29 Feb 2016 |
||||
GW-RN0699-15 |
10 Nov 2015 |
27 Feb 2016 |
||||
GW-RN0695-15 |
29 Nov 2015 |
28 Feb 2016 |
||||
GW-RN0712-15 |
16 Nov 2015 |
29 Feb 2016 |
||||
GW-RN0736-15 |
24 Nov 2015 |
29 Feb 2016 |
||||
GW-RN0765-15 |
1 Dec 2015 |
27 Feb 2016 |
||||
GW-RN0812-15 |
20 Dec 2015 |
29 Feb 2016 |
||||
GW-RN0837-15 |
23 Dec 2015 |
29 Feb 2016 |
||||
GW-RN0892-15 |
9 Jan 2016 |
8 July 2016 |
||||
GW-RN0894-15 |
5 Jan 2016 |
27 Feb 2016 |
||||
Contract 5 |
||||||
1 |
Air pollution Control (Construction Dust) Regulation |
Ref. No: 359338 |
13 May 2013 |
Till the end of Contract |
||
2 |
Chemical Waste Producer Registration |
Waste Producers Number No.:
5213-642-S3735-01 |
8 Jun 2013 |
Till the end of Contract |
||
3 |
Water Pollution Control Ordinance - Discharge License |
No.: W5/1G44/1 |
8 Jun 13 |
30 Jun 2018 |
||
4 |
Waste Disposal Regulation - Billing Account for
Disposal of Construction Waste |
Account No. 7017351 |
29 Apr 13 |
Till the end of Contract |
||
Contract 6 |
||||||
1 |
Air pollution Control (Construction Dust) Regulation |
Ref. No: 390614 |
29 Jun 2015 |
Till the end of Contract |
||
2 |
Chemical Waste Producer Registration |
Waste Producers Number No.: 5213-652-C3969-01 |
31 Aug 2015 |
Till the end of Contract |
||
3 |
Waste Disposal Regulation - Billing Account for
Disposal of Construction Waste |
Account No. 7022707 |
9 Jul 2015 |
Till the end of Contract |
||
4 |
Water Pollution Control Ordinance - Discharge License |
Application
is processing by EPD |
||||
5 |
Construction Noise Permit |
GW-RN0681-15 |
26 Oct 2015 |
25 Apr 2016 |
||
6 |
Construction Noise Permit |
GW-RN0683-15 |
26 Oct 2015 |
25 Apr 2016 |
||
Contract SS C505 |
||||||
1 |
Air pollution Control (Construction Dust) Regulation |
Ref. No: 390974 |
13 Jul 2015 |
Till the end of Contract |
||
2 |
Chemical Waste Producer Registration |
Waste
Producer No.: 5213-642-L1048-07 |
16 Sep 2015 |
Till the end of Contract |
||
3 |
Water Pollution Control Ordinance - Discharge License |
Licence No.: WT00022774-2015 |
17 Nov 2015 |
30 Nov 2020 |
||
4 |
Waste Disposal Regulation - Billing Account for
Disposal of Construction Waste |
Account No. 7022831 |
23 Jul 2015 |
Till the end of Contract |
||
5 |
Construction Noise Permit |
PP-RN0027-15 |
5 Oct 2015 |
2 Apr 2016 |
||
PP-RN0032-15 |
23 Nov 2015 |
22 Jan 2016 |
||||
GW-RN0768-15 |
27 Nov 2015 |
22 Dec 2015 |
||||
GW-RN0865-15 |
23 Dec 2015 |
22 Jan 2016 |
||||
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 |
1-hour
TSP by Real-Time Portable Dust Meter; and 24-hour
TSP by High Volume Air Sampler. |
Noise |
Leq(30min) in
normal working days (Monday to Saturday) 07:00-19:00 except public holiday;
and 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 Supplementary
information for data auditing, statistical results such as L10 and
L90 shall also be obtained for reference. |
Water Quality |
In-situ Measurements Dissolved
Oxygen Concentration (mg/L); Dissolved
Oxygen Saturation (% ); Turbidity
(NTU); pH unit; Water
depth (m); and Temperature
(¢J). |
Laboratory Analysis
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 |
ArchSD SS C505 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 |
AM4b^ |
House no. 10B1 Nga Yiu Ha Village |
LMH to Frontier
Closed Area |
Contract 6 |
AM5a^ |
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 |
AM7b@ |
Loi Tung Village House |
Sha Tau Kok Road |
Contract 2 Contract 6 |
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 March 2014 after verified by the IEC. It was
approved by EPD (EPD¡¦s ref.: (6) in EP 2/N7/A/52 Pt.12 dated 9 Jun 2014).
@ Proposal for the change of air quality monitoring location from AM7a to
AM7b was submitted to EPD on 4 June 2014 after verified by the IEC. It was
approved by EPD (EPD¡¦s ref.: (7) in EP 2/N7/A/52 Pt.12 dated 9 Jun 2014).
^ proposal for change of monitoring location
are subject to approve by EPD.
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 |
ArchSD SS C505 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
Road |
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 |
Coordinates of Designated / Alternative Location |
Nature of the location |
Related to the Work Contract |
|
WM1 |
Downstream of Kong Yiu Channel |
833 679 |
845 421 |
Alternative location located at upstream 51m of the designated location |
ArchSD SS C505 Contract 5 |
WM1- Control |
Upstream of Kong Yiu Channel |
834 185 |
845 917 |
NA |
ArchSD SS C505 Contract 5 |
WM2A |
Downstream of River Ganges |
834 204 |
844 471 |
Alternative location located at downstream 81m of the designated
location |
Contract 6 |
WM2A- Control |
Upstream of River Ganges |
835 270 |
844 243 |
Alternative location located at upstream 78m of the designated location |
Contract 6 |
WM2B |
Downstream of River Ganges |
835 433 |
843 397 |
NA |
Contract 6 |
WM2B- Control |
Upstream of River Ganges |
835 835 |
843 351 |
Alternative location located at downstream 31m of the designated
location |
Contract 6 |
WM3 |
Downstream of River Indus |
836 324 |
842 407 |
NA |
Contract 2 Contract 6 |
WM3- Control |
Upstream of River Indus |
836 763 |
842 400 |
Alternative location located at downstream 26m of the designated
location |
Contract 2 Contract 6 |
WM4 |
Downstream of Ma Wat Channel |
833 850 |
838 338 |
Alternative location located at upstream 11m of the designated location |
Contract 2 Contract 3 |
WM4¡V Control A |
Kau Lung Hang
Stream |
834 028 |
837 695 |
Alternative location located at downstream 28m of the designated
location |
Contract 2 Contract 3 |
WM4¡V Control B |
Upstream of Ma Wat Channel |
833760 |
837395 |
Alternative location located at upstream 15m of the designated location |
Contract 2 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:
1-hour TSP |
3 times every six
days during course of works |
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* |
* Instrument was used in the Reporting
Period and the calibration certificate could be referred in Appendix F.
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.
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-31 or Rion NL-52* |
Calibrator |
B&K Type 4231* or Cesva
CB-5* or Rion NC-74* |
Portable Wind Speed Indicator |
Testo Anemometer |
* Instrument was used in the Reporting
Period and the calibration certificate could be referred in Appendix F.
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 Professional Plus /YSI PRO20 Handheld Dissolved
Oxygen Instrument* / YSI 550A Multifunctional Meter/ YSI Professional DSS* |
pH meter |
YSI Professional Plus / AZ8685 pH pen-style meter*/ YSI
6820/ 650MDS/ YSI Professional DSS* |
Turbidimeter |
Hach 2100Q*/ YSI 6820/
650MDS/ YSI Professional DSS* |
Sample Container |
High density polythene bottles (provided by laboratory) |
Storage
Container |
¡¥Willow¡¦
33-liter plastic cool box with Ice pad |
* Instrument was used in the Reporting
Period and the calibration certificate could be referred in Appendix F.
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.
3.6.3
The equipment used for 24-hour TSP
measurement is Tisch Environmental, Inc. Model TE-5170 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.
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 procedures 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 or tape measurement 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 or YSI Professional DSS 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 AZ Model 8685 pH pen-style meter or YSI Professional
DSS is used for in-situ pH measurement. The pH meter is capable of measuring pH
in the range of 0 ¡V 14 and readable to 0.1.
3.6.16
A portable Hach
2100Q Turbidimeter or YSI Professional DSS is used
for in-situ turbidity measurement. The turbidity meter is capable of measuring
turbidity in the range of 0 ¡V 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 |
||
AM4b |
267 |
148 |
||
AM5a |
268 |
143 |
||
AM6 |
269 |
148 |
||
AM7b |
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 2,
3, 5, 6 and Contract SS C505 and air quality monitoring was performed at all designated
locations.
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 147 events of 1-hour TSP and 54
events 24-hours TSP monitoring were carried out and the monitoring results are
summarized in Tables 4-1 to 4-9. 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 ¡V AM1a
Date |
24-hour
TSP (mg/m3) |
1-hour
TSP (mg/m3) |
||||
Date |
Start Time |
1st reading |
2nd reading |
3rd reading |
||
3-Dec-15 |
59
|
2-Dec-15 |
10:01 |
54 |
60 |
100 |
9-Dec-15 |
27
|
8-Dec-15 |
10:09 |
75 |
80 |
93 |
15-Dec-15 |
51
|
14-Dec-15 |
10:10 |
41 |
32 |
126 |
21-Dec-15 |
38
|
19-Dec-15 |
8:45 |
47 |
51 |
49 |
24-Dec-15 |
37
|
24-Dec-15 |
10:13 |
142 |
149 |
118 |
30-Dec-15 |
69
|
30-Dec-15 |
13:00 |
247 |
251 |
185 |
Average (Range) |
47 (27-69) |
Average (Range) |
106 (32 ¡V 251) |
Table 4-2 Summary
of 24-hour and 1-hour TSP Monitoring Results ¡V AM2
Date |
24-hour
TSP (mg/m3) |
1-hour
TSP (mg/m3) |
||||
Date |
Start Time |
1st
reading |
2nd
reading |
3rd
reading |
||
3-Dec-15 |
88
|
2-Dec-15 |
9:53 |
50 |
45 |
40 |
9-Dec-15 |
33
|
8-Dec-15 |
10:03 |
77 |
70 |
84 |
15-Dec-15 |
72
|
14-Dec-15 |
10:02 |
76 |
52 |
35 |
21-Dec-15 |
88
|
19-Dec-15 |
8:40 |
59 |
77 |
56 |
24-Dec-15 |
65
|
24-Dec-15 |
10:06 |
136 |
155 |
98 |
30-Dec-15 |
78
|
30-Dec-15 |
13:00 |
245 |
230 |
201 |
Average (Range) |
71 (33-88) |
Average (Range) |
99 (35 ¡V 245) |
Table 4-3 Summary
of 24-hour and 1-hour TSP Monitoring Results ¡V AM3
Date |
24-hour
TSP (mg/m3) |
1-hour
TSP (mg/m3) |
||||
Date |
Start Time |
1st
reading |
2nd
reading |
3rd
reading |
||
3-Dec-15 |
56
|
2-Dec-15 |
9:39 |
47 |
67 |
73 |
9-Dec-15 |
24
|
8-Dec-15 |
9:57 |
68 |
63 |
82 |
15-Dec-15 |
23
|
14-Dec-15 |
9:56 |
68 |
59 |
54 |
21-Dec-15 |
78
|
19-Dec-15 |
8:34 |
57 |
56 |
61 |
24-Dec-15 |
48
|
24-Dec-15 |
9:59 |
190 |
129 |
140 |
30-Dec-15 |
97
|
30-Dec-15 |
13:00 |
189 |
161 |
170 |
Average (Range) |
54 (23-97) |
Average (Range) |
96 (47 ¡V 190) |
Table 4-4 Summary
of 24-hour and 1-hour TSP Monitoring Results ¡V AM4b
Date |
24-hour
TSP (mg/m3) |
1-hour
TSP (mg/m3) |
||||
Date |
Start Time |
1st
reading |
2nd
reading |
3rd
reading |
||
1-Dec-15 |
60
|
5-Dec-15 |
10:42 |
107 |
96 |
142 |
7-Dec-15 |
59
|
11-Dec-15 |
10:00 |
50 |
60 |
75 |
12-Dec-15 |
35
|
17-Dec-15 |
10:09 |
42 |
43 |
44 |
18-Dec-15 |
63
|
23-Dec-15 |
8:07 |
40 |
46 |
54 |
24-Dec-15 |
52
|
29-Dec-15 |
10:40 |
169 |
152 |
154 |
30-Dec-15 |
72
|
|
||||
Average (Range) |
57 (35-72) |
Average (Range) |
85 (40 ¡V 169) |
Table 4-5 Summary
of 24-hour and 1-hour TSP Monitoring Results ¡V AM5a
Date |
24-hour
TSP (mg/m3) |
1-hour
TSP (mg/m3) |
||||
Date |
Start Time |
1st
reading |
2nd
reading |
3rd
reading |
||
1-Dec-15 |
74
|
5-Dec-15 |
10:39 |
88 |
74 |
148 |
7-Dec-15 |
47
|
11-Dec-15 |
9:55 |
54 |
61 |
79 |
12-Dec-15 |
42
|
17-Dec-15 |
10:10 |
38 |
39 |
40 |
18-Dec-15 |
70
|
23-Dec-15 |
8:15 |
43 |
55 |
50 |
24-Dec-15 |
34
|
29-Dec-15 |
10:50 |
129 |
176 |
126 |
30-Dec-15 |
40
|
|
||||
Average (Range) |
52 (34-74) |
Average (Range) |
80 (38 ¡V 176) |
Table 4-6 Summary
of 24-hour and 1-hour TSP Monitoring Results ¡V AM6
Date |
24-hour
TSP (mg/m3) |
1-hour
TSP (mg/m3) |
||||
Date |
Start Time |
1st
reading |
2nd
reading |
3rd
reading |
||
1-Dec-15 |
99
|
5-Dec-15 |
10:53 |
130 |
146 |
239 |
7-Dec-15 |
138
|
11-Dec-15 |
9:47 |
44 |
63 |
87 |
12-Dec-15 |
105
|
17-Dec-15 |
10:00 |
53 |
71 |
49 |
18-Dec-15 |
77
|
23-Dec-15 |
8:04 |
46 |
51 |
40 |
24-Dec-15 |
123
|
29-Dec-15 |
10:27 |
113 |
102 |
98 |
30-Dec-15 |
142
|
|
||||
Average (Range) |
114 (77-142) |
Average (Range) |
89 (40 ¡V 238) |
Table 4-7 Summary
of 24-hour and 1-hour TSP Monitoring Results ¡V AM7b
Date |
24-hour
TSP (mg/m3) |
1-hour
TSP (mg/m3) |
||||
Date |
Start Time |
1st
reading |
2nd
reading |
3rd
reading |
||
3-Dec-15 |
50
|
5-Dec-15 |
9:45 |
92 |
104 |
117 |
9-Dec-15 |
29
|
11-Dec-15 |
9:15 |
52 |
57 |
66 |
15-Dec-15 |
49
|
17-Dec-15 |
9:05 |
86 |
68 |
59 |
21-Dec-15 |
37
|
23-Dec-15 |
9:11 |
246 |
253 |
199 |
24-Dec-15 |
77
|
29-Dec-15 |
9:23 |
87 |
82 |
93 |
30-Dec-15 |
59
|
|
||||
Average (Range) |
50 (29-77) |
Average (Range) |
111 (52 ¡V 253) |
Table 4-8 Summary
of 24-hour and 1-hour TSP Monitoring Results ¡V AM8
Date |
24-hour
TSP (mg/m3) |
1-hour
TSP (mg/m3) |
||||
Date |
Start Time |
1st
reading |
2nd
reading |
3rd
reading |
||
3-Dec-15 |
56
|
5-Dec-15 |
13:09 |
100 |
113 |
117 |
9-Dec-15 |
29
|
11-Dec-15 |
13:08 |
55 |
62 |
64 |
15-Dec-15 |
54
|
17-Dec-15 |
13:02 |
55 |
57 |
61 |
21-Dec-15 |
17
|
23-Dec-15 |
13:06 |
222 |
165 |
150 |
24-Dec-15 |
25
|
29-Dec-15 |
13:19 |
100 |
108 |
117 |
30-Dec-15 |
41
|
|
||||
Average (Range) |
37 (17-56) |
Average (Range) |
103 (55 ¡V 222) |
Table 4-9 Summary
of 24-hour and 1-hour TSP Monitoring Results ¡V AM9b
Date |
24-hour
TSP (mg/m3) |
1-hour
TSP (mg/m3) |
||||
Date |
Start Time |
1st
reading |
2nd
reading |
3rd
reading |
||
3-Dec-15 |
80
|
2-Dec-15 |
9:15 |
135 |
130 |
137 |
9-Dec-15 |
34
|
8-Dec-15 |
9:34 |
105 |
103 |
120 |
15-Dec-15 |
73
|
14-Dec-15 |
9:24 |
188 |
152 |
124 |
21-Dec-15 |
45
|
19-Dec-15 |
9:09 |
74 |
57 |
49 |
24-Dec-15 |
40
|
24-Dec-15 |
9:01 |
175 |
228 |
98 |
30-Dec-15 |
57
|
30-Dec-15 |
11:01 |
192 |
158 |
147 |
Average (Range) |
55 (34-80) |
Average (Range) |
132 (49 ¡V 228) |
4.2.2
As shown in Tables 4-1 to 4-9, all
the 1-hour TSP and 24-hour TSP monitoring results were below the Action/Limit
Levels. No Notification of
Exceedance (NOE) was issued in this Reporting Period.
4.2.3
The meteorological data during the impact
monitoring days are summarized in Appendix
K.
4.2.4
5.1.1
In the Reporting Period, construction works under the
project have been commenced in Contracts 2,
3, 5, 6 and Contract SS C505 and noise monitoring was performed at all
designated locations.
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 55 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, NM3, NM4, NM5, NM6, NM7,
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 and 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 and 5-2. 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 (Contracts 3 and 5)
Construction Noise Level (Leq30min), dB(A) |
|||||
Date |
NM1 |
NM2 |
NM8 |
NM9 |
NM10(*) |
2-Dec-15 |
64 |
64
|
61
|
59 |
69 |
8-Dec-15 |
69
|
62
|
55
|
52 |
70 |
14-Dec-15 |
68
|
61
|
58
|
58 |
69 |
19-Dec-15 |
63
|
65
|
58
|
63 |
65 |
24-Dec-15 |
57
|
62
|
53
|
55 |
64 |
30-Dec-15 |
63
|
61
|
63
|
60 |
64 |
Limit Level |
75 dB(A) |
Remarks
(*) façade correction (+3 dB(A)
is added according to acoustical principles and EPD guidelines
i bold and
underlined indicated Limit Level exceedance.
Table 5-2 Summary of Construction Noise Monitoring Results (Contracts 2 and 6)
Construction Noise Level (Leq30min), dB(A) |
|||||
Date |
NM3 |
NM4 |
NM5 |
NM6 |
NM7 |
5-Dec-15 |
60
|
64
|
53
|
58
|
60
|
11-Dec-15 |
59
|
66
|
52
|
58
|
59
|
17-Dec-15 |
59
|
66
|
65
|
61
|
67
|
23-Dec-15 |
61
|
69
|
58
|
53
|
63
|
29-Dec-15 |
60
|
67
|
53
|
59
|
60
|
Limit Level |
75 dB(A) |
5.2.1
As shown in Tables
5-1 and 5-2, the noise level measured at all designated monitoring
locations were below 75dB(A).
Furthermore, there was no noise complaints (Action Level
exceedance) received by the RE, Contractors or CEDD in the Reporting
Period. Therefore, no Action or
Limit Level exceedance was triggered and no corrective action was required.
5.2.2
There was outstanding
investigation result for noise exceedance at NM10 in last Reporting
Period. The relevant investigation
was completed and the result is presented in below.
Investigation Result for Exceedance at NM10 on 14
November 2015 (last Reporting Period)
5.2.3
According to the
field data sheet recorded by the ET¡¦s monitoring team, it was observed that
excavation and lifting works were undertaken near Bridge E under Contract 3
during the course of noise measurement. Moreover, other noise source from
excavation work and air compressor under a DSD project was observed at 40m from
the monitoring location NM10 at the last 15 minutes of the course of noise
monitoring.
5.2.4
As advised by the
Contractor, the construction activities carried out 14 November 2015 were
excavation and lifting of construction materials and the Powered Mechanical
Equipment (PME) in used near Bridge E included one excavator and one
crane. The construction works under
the Contract were normal site work which carried out throughout the November
2015 and no exceedances were recorded when similar construction activities
carried out.
5.2.5
In view of the
subsequent noise monitoring result at NM10 after 14 November 2015, no
exceedances were triggered and no noise complaints due to construction work
were received. It is considered the
exceedance was caused by cumulated noise of the Contract and nearby
construction activities of other project.
5.2.6
To minimize the
construction noise impact, The Contractor was advised to adopt good site
practice as mitigation measures in following.
(a) Do not operate machines continuously, i.e)
to take intermittent break.
(b) To avoid operating plants concurrently, such as limit
heavy vehicles entering and leaving the site while carrying out concreting near
the entrance.
(c)
To turn off any
idle equipment on site.
i.
6.1.1
In the Reporting Period, construction works under the
project has been commenced in Contracts 2,
3, 5, 6 and Contract SS C505 and water quality monitoring was performed at all
designated locations. 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, there were thirteen (13)
sampling days for WM1, WM3 and WM4 and their control stations and twelve (12)
sampling days for WM2A and WM2B and their control stations. Moreover, since 24 December 2015, three
(3) events of additional water monitoring were carried out at WM2B due to
exceedance following to the Event and Action Plan.
6.2.2
The key monitoring parameters including Dissolved Oxygen, Turbidity and Suspended
Solids are summarized in Tables 6-1 and 6-4. Breaches of water quality monitoring
criteria are shown in Table 6-5. 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 Contracts 2 and 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 |
|
1-Dec-15 |
7.6 |
7.7 |
7.0 |
13.6 |
15.5 |
11.1 |
14.0 |
13.5 |
8.5 |
3-Dec-15 |
5.9 |
7.7 |
4.1 |
66.4 |
9.3 |
12.6 |
56.5 |
4.5 |
10.5 |
5-Dec-15 |
7.2 |
7.4 |
5.9 |
25.9 |
9.0 |
11.1 |
23.0 |
12.0 |
8.0 |
8-Dec-15 |
7.5 |
8.0 |
5.4 |
20.2 |
12.1 |
17.9 |
19.5 |
7.0 |
14.5 |
10-Dec-15 |
7.3 |
7.8 |
6.3 |
24.7 |
17.4 |
32.9 |
20.5 |
7.5 |
18.0 |
12-Dec-15 |
7.4 |
8.2 |
6.4 |
17.0 |
10.3 |
35.5 |
22.5 |
10.0 |
45.5 |
14-Dec-15 |
7.4 |
8.2 |
5.6 |
22.7 |
22.7 |
14.4 |
20.0 |
5.5 |
12.5 |
16-Dec-15 |
8.7 |
9.2 |
7.2 |
16.5 |
5.3 |
15.2 |
15.5 |
3.5 |
22.0 |
18-Dec-15 |
8.6 |
9.3 |
6.8 |
16.8 |
5.9 |
11.8 |
10.5 |
2.5 |
11.5 |
22-Dec-15 |
7.6 |
8.6 |
5.8 |
13.9 |
7.4 |
18.2 |
8.0 |
5.0 |
19.5 |
24-Dec-15 |
8.0 |
8.1 |
6.6 |
28.5 |
12.3 |
15.0 |
23.5 |
9.5 |
20.5 |
28-Dec-15 |
8.5 |
8.9 |
7.6 |
18.2 |
5.6 |
33.6 |
13.5 |
3.0 |
37.0 |
30-Dec-15 |
8.4 |
9.1 |
7.5 |
14.7 |
6.6 |
12.4 |
13.5 |
3.5 |
13.0 |
Remark:
bold and underlined indicated Limit Level exceedance.
Table 6-2 Summary
of Water Quality Monitoring Results for Contracts 5 and SS C505
Date |
Dissolved Oxygen (mg/L) |
Turbidity (NTU) |
Suspended Solids (mg/L) |
|||
WM1 |
WM1- Control |
WM1 |
WM1- Control |
WM1 |
WM1- Control |
|
1-Dec-15 |
7.1 |
7.2 |
244.5 |
13.3 |
140.0 |
5.0 |
3-Dec-15 |
7.3 |
7.5 |
24.7 |
8.8 |
25.0 |
5.0 |
5-Dec-15 |
8.4 |
8.0 |
17.6 |
12.2 |
21.0 |
14.0 |
8-Dec-15 |
8.4 |
8.3 |
20.1 |
11.6 |
22.0 |
4.0 |
10-Dec-15 |
8.0 |
8.1 |
133.5 |
29.1 |
156.0 |
12.5 |
12-Dec-15 |
7.2 |
7.8 |
348.0 |
9.8 |
606.5 |
5.0 |
14-Dec-15 |
6.0 |
7.0 |
148.0 |
10.9 |
211.0 |
4.5 |
16-Dec-15 |
8.8 |
10.7 |
50.4 |
6.9 |
51.0 |
2.5 |
18-Dec-15 |
8.7 |
10.1 |
47.8 |
13.9 |
47.5 |
7.0 |
22-Dec-15 |
7.4 |
8.4 |
27.8 |
11.8 |
27.0 |
3.5 |
24-Dec-15 |
7.2 |
7.6 |
48.0 |
9.9 |
49.0 |
10.0 |
28-Dec-15 |
6.9 |
9.0 |
10.7 |
33.8 |
29.5 |
5.5 |
30-Dec-15 |
9.2 |
9.8 |
20.5 |
11.9 |
14.0 |
5.0 |
Remark:
bold and underlined indicated Limit Level exceedance.
Table 6-3 Summary
of Water Quality Monitoring Results for Contract 6
Date |
Dissolved Oxygen (mg/L) |
Turbidity (NTU) |
Suspended Solids (mg/L) |
||||||||||
WM2A |
WM2A- C |
WM2B |
WM2B- C |
WM2A |
WM2A- C |
WM2B |
WM2B- C |
WM2A |
WM2A- C |
WM2B |
WM2B- C |
||
2-Dec-15 |
8.2 |
7.3 |
7.6 |
7.0 |
10.4 |
7.9 |
30.3 |
4.9 |
8.5 |
4.0 |
67.5 |
4.5 |
|
4-Dec-15 |
8.4 |
5.9 |
8.7 |
7.0 |
8.3 |
13.2 |
34.1 |
7.8 |
7.0 |
3.5 |
41.0 |
2.0 |
|
7-Dec-15 |
9.0 |
7.9 |
9.3 |
7.2 |
35.7 |
13.3 |
28.2 |
7.8 |
60.0 |
3.5 |
27.0 |
2.0 |
|
9-Dec-15 |
8.0 |
8.5 |
7.9 |
7.4 |
375.0 |
782.5 |
68.1 |
4.0 |
300.0 |
461.0 |
80.0 |
2.0 |
|
11-Dec-15 |
7.9 |
7.9 |
8.1 |
7.2 |
52.1 |
12.8 |
18.3 |
24.1 |
21.0 |
3.5 |
10.0 |
17.0 |
|
15-Dec-15 |
8.5 |
8.2 |
8.8 |
7.6 |
19.7 |
10.5 |
113.0 |
3.5 |
10.5 |
4.0 |
123.5 |
2.0 |
|
17-Dec-15 |
10.0 |
9.1 |
9.6 |
8.0 |
10.5 |
15.9 |
88.4 |
9.0 |
5.5 |
5.0 |
125.5 |
2.0 |
|
19-Dec-15 |
10.3 |
9.6 |
9.9 |
8.0 |
13.5 |
8.1 |
56.8 |
3.7 |
12.0 |
6.5 |
121.0 |
2.0 |
|
21-Dec-15 |
9.3 |
8.3 |
9.4 |
7.9 |
7.8 |
14.2 |
54.0 |
4.3 |
3.0 |
6.5 |
79.5 |
2.0 |
|
23-Dec-15 |
8.7 |
7.9 |
8.8 |
7.5 |
12.5 |
10.9 |
18.8 |
8.6 |
5.0 |
2.5 |
9.5 |
4.0 |
|
24-Dec-15# |
|
6.1 |
|
4.0 |
|
||||||||
28-Dec-15# |
|
10.2 |
|
7.0 |
|
||||||||
29-Dec-15 |
9.3 |
8.5 |
9.9 |
7.8 |
7.4 |
8.3 |
7.2 |
5.9 |
2.5 |
3.5 |
5.0 |
2.0 |
|
30-Dec-15# |
|
9.4 |
|
8.0 |
|
||||||||
31-Dec-15 |
9.4 |
8.6 |
9.8 |
8.0 |
8.9 |
11.0 |
35.7 |
4.8 |
7.5 |
5.5 |
42.5 |
3.5 |
|
Remark (i) bold and underlined indicated Limit Level exceedance.
# Since 24 December 2015, additional water monitoring would be
carried out at the exceeded location(s).
Table 6-4 Summary
of Water Quality Monitoring Results for Contracts 2 and 6
Date |
Dissolved Oxygen (mg/L) |
Turbidity (NTU) |
Suspended Solids (mg/L) |
|||
WM3 |
WM3- Control |
WM3 |
WM3- Control |
WM3 |
WM3- Control |
|
2-Dec-15 |
6.8 |
6.9 |
35.8 |
31.5 |
47.0 |
70.5 |
4-Dec-15 |
7.7 |
6.7 |
13.5 |
14.4 |
14.0 |
14.0 |
7-Dec-15 |
7.7 |
8.2 |
20.6 |
27.4 |
20.0 |
30.5 |
9-Dec-15 |
6.7 |
7.4 |
226.0 |
48.3 |
148.0 |
58.0 |
11-Dec-15 |
7.6 |
7.6 |
17.0 |
26.0 |
8.5 |
61.5 |
15-Nov-15 |
8.2 |
7.0 |
13.0 |
11.8 |
11.5 |
14.0 |
17-Dec-15 |
8.7 |
8.9 |
6.5 |
18.6 |
11.5 |
13.0 |
19-Dec-15 |
9.2 |
9.5 |
16.6 |
21.5 |
11.0 |
19.5 |
21-Dec-15 |
8.6 |
8.9 |
21.5 |
23.2 |
14.0 |
24.5 |
23-Dec-15 |
8.2 |
8.3 |
23.8 |
26.7 |
13.0 |
28.5 |
26-Dec-15 |
9.1 |
10.1 |
15.7 |
17.0 |
13.0 |
17.0 |
29-Dec-15 |
9.1 |
7.6 |
15.3 |
38.7 |
14.5 |
40.0 |
31-Dec-15 |
8.8 |
8.8 |
18.6 |
30.2 |
8.5 |
22.5 |
Remark:
bold and underlined indicated Limit Level exceedance.
Table 6-5 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 |
4 |
0 |
4 |
0 |
8 |
WM2A |
0 |
0 |
0 |
2 |
0 |
2 |
0 |
4 |
WM2B |
0 |
0 |
0 |
10 |
0 |
9 |
0 |
19 |
WM3 |
0 |
0 |
0 |
1 |
0 |
1 |
0 |
2 |
WM4 |
0 |
0 |
0 |
1 |
0 |
1 |
0 |
2 |
No of Exceedance |
0 |
0 |
0 |
18 |
0 |
17 |
0 |
35 |
6.2.3
In this Reporting Period, a total of thirty-five
(35) Limit Level exceedances, namely eighteen (18) exceedances of turbidity and
seventeen (17) exceedances of suspended solids were recorded.
6.2.4
NOE was issued to relevant parties upon confirmation
of the monitoring result. The
investigation for the cause of exceedance is in progress.
6.2.5
There were outstanding investigation results
for water quality exceedances recorded at WM2A and WM2B in last Reporting
Period. The relevant investigation
was completed and the results are presented in below.
Investigation Result
for Exceedance at WM2A on 16 November 2015 (last Reporting Period)
6.2.6
According to the site information provided
from the Contractor of C6, construction activities carried out on 16 November
2015 at North Portal near WM2A included site clearance and Ground Investigation
(GI) works. As advised by the
Contractor, water re-circulation tank was provided for the GI works and no wastewater
was discharged.
6.2.7
According to the site record from the
monitoring team during monitoring on 16 November 2015, the water quality at
WM2A-C is visually clear but cloudy water was observed at WM2A.
6.2.8
During site inspection on 13 November 2015,
no excavation either inside the river course or on the land side of the works
area was observed. In order to
divert the upstream water across the site without contamination by the
construction activities, a flow diversion was constructed through the
site. However, silt and mud
cumulated inside the flow diversion was observed during site inspection.
Moreover, exposed surface next to the river stream was observed. According to
the rainfall record from the HKO, there were rains on 15 and 16 November 2015.
It is considered that the flow diversion was polluted by the silt and mud
cumulated inside the channel during rain.
6.2.9
As a prompt remedial action, the Contractor
was advised to clean up the silt and sediment in the diversion channel
regularly to minimize generation of turbid water. It was completed on 19 November 2015 and
the discharge water was visually clear. Moreover, the exposed surface next to
the river stream has been covered with impervious sheeting to minimize muddy
runoff.
6.2.10
To avoid contamination of the water in the
flow diversion right across the site during construction stage, the Contractor
was proposed to construct temporary drainage system along the site boundary to
collect the upstream water and preventing it passing through the construction
site. Moreover, the Contractor was
advised to set up a temporary drainage system next to the river stream to
prevent the runoff from the site entering the exiting river stream.
6.2.11
There were no exceedances triggered at WM2A
after rainy day and removal of silt in the diversion flow undertaken by the
Contractor on 19 November 2015. It
is considered that the exceedance was a single event due to rain.
Investigation Result
for Exceedance at WM2B on 12 and 14 November 2015 (last Reporting Period)
6.2.12
According to the site information provided
from the Contractor of C6, construction activities carried out on 12 and 14
November 2015 at North Portal at upstream of WM2B included bored pile works and
slope works.
6.2.13
According to the site record from the
monitoring team during monitoring on 12 and 14 November 2015, the water at
flowing at WM2B was visually clear but very shallow water was measured at WM2B
and the water depth was around 0.02m.
Moreover, cumulated sediment was observed at the channel bed. Since the
water sampling was carried out at the bridge over the drainage channel, the
sampled water could not avoid inclusion of the loose sediment and debris at the
channel bed which highly affected the monitoring result.
6.2.14
Since discharge license was not yet granted
for the Contract, self-monitoring for the effluent quality would be conducted
by the Contractor if discharge is required to ensure the discharge effluent
complied with the relevant requirements including the Technical Memorandum -
Standards for Effluents Discharged into Drainage and Sewerage Systems, Inland
and Coastal Waters. According to the self-monitoring record by the Contractor
on 12 and 14 November 2015, the treated water in the AquaSed
was visually acceptable, however, there were no effluent discharges made on 12
and 14 November 2015 due to insufficient treated effluent.
6.2.15
During site inspection at North Portal on 6
November 2015, it was observed that wastewater treatment system has been in
place and the water quality in the AquaSed was
visually acceptable. Moreover, to minimize the muddy runoff into the existing
channel, the slopes adjacent to channel were covered with tarpaulin sheet.
6.2.16
It is considered that the exceedances were
likely due to the shallow water and disturbance of sediment at the channel bed during
sampling and not related to the works under the project.
Investigation Result
for Exceedance at WM2B on 26 and 28 November 2015 (last Reporting Period)
6.2.17
According to the site information provided
from the Contractor of C6, construction activities carried out on 26 and 28
November 2015 at North Portal near WM2B included bored pile works and slope
works.
6.2.18
According to the site record from the
monitoring team during monitoring on 26 and 28 November 2015, very shallow
water was measured at WM2B and the water depth was around 0.01m to 0.02m. It
was observed that the water flowing at WM2 was visually clear, however, loose
sediment was cumulated at the channel bed.
Since the water sampling was carried out at the bridge over the drainage
channel, the sampled water could not avoid inclusion the sediment and debris at
the channel bed.
6.2.19
As advised by the Contractor, the wastewater
generated was recirculated for the bored pile work and no wastewater was
discharged. Since there were no
rainfall record on the exceedance days, runoff from the site is not likely to
occur. To minimize muddy runoff
under rainy day, the slope adjacent to the channel was covered with impervious
sheeting or hard paved. During weekly site inspection in November 2015, it was
observed that a wastewater treatment facility has been set up for necessary
use.
6.2.20
It is considered that the exceedances were
likely due to the shallow water and
disturbance of sediment at the channel bed during sampling and not related to
the works under the project.
Investigation Result
for Exceedance at WM1 on 1 December 2015 (Contract 5)
6.2.21
According to the site information provided by
the Contractor, formation work at BCPD area and road works at Lin Ma Hang Road
were carried out under Contract 5 on 1 December 2015. As advised by the Contractor, no
wastewater discharge was made on 1 December 2015.
6.2.22
According to the field data record by ET on 1
December 2015, muddy water was observed at WM1 which flowing from upstream but
the water quality at control station was clear.
6.2.23
Weekly site inspection was carried out by the
RE, Contractor, IEC and Contractor on 26 November and 3 December 2015, it was
noted that the active construction works were excavation and compaction in Lin
Ma Hang Road and these works would not generate wastewater. Site formation work was continued in BCP
area and no water quality impact caused by Contract 5 was observed.
6.2.24
Site inspection at areas adjacent to the
river course was carried out by the RE and ET on 7 December 2015 to
investigation the possible cause of exceedance. During the site inspection, it was
observed that formation work at BCPD area and road works at Lin Ma Hang Road
were carried out under Contract 5 and no wastewater generated site activities
were conducted. There were some
compacted slope surfaces observed however, no rainfall on and before 1 December
2015 as recorded by the Hong Kong Observatory and possible surface runoff from
the slopes and BCP open-cut area was unlikely to occur.
6.2.25
In view along the river course during site
inspection on 7 December 2015, there were no traces of muddy runoff nor
discharge observed throughout the channel adjacent to site. However, there was new private logistic
store located adjacent to Kong Yiu Channel which near
the area of Contract 5 and a new concrete paved land was observed at the front
yard of the logistic store and the concrete work may cause muddy water.
6.2.26
There were no exceedances of Turbidity
triggered in subsequent monitoring on 3 and 5 December 2015. Based on the above investigation, no
evident of wastewater discharge from the site was found and no turbidity exceedance
triggered in subsequent of monitoring days. It is conclude that the exceedances
should be a single event and not likely related to the works under Contract 5.
Investigation Result
for Exceedance at WM1 on 1 December 2015 (SS C505)
6.2.27
According to the site information provided by
the Contractor, the major construction activities carried out on 1 December
2015 included percussive piling, bored piling, pre-boring, backfilling and
ground investigation which are illustrated in Figure 1. It is noted that the majority active
construction area was conducted at Portion 1 which not closed to Kong Yiu River.
6.2.28
According to the field data record by ET on 1
December 2015, muddy water was observed at WM1 which flowing from upstream but
the water quality at control station was clear.
6.2.29
In view of the construction activities on 1
December 2015, wastewater was likely be generated during the bored piling
work. As advised by the Contractor,
the wastewater generated from the works was recirculated for the piling work
used. If water discharge is
required, they will follow the temporary site drainage plan in which wastewater
would be diverted to the perimeter channel and then collected to the wastewater
treatment plant for treatment before discharge. It is noted that the discharge
point connecting public drainage was located at the west of the site and the
discharge water would not flow to WM1 and its
upstream.
6.2.30
During site inspection on 2 December 2015, no
wastewater was observed at the perimeter channel near the bored piling area. Moreover,
sludge suction truck for sucking the sediment cumulated inside sedimentation
tank was observed and regular clearing of the sedimentation tanks could avoid
over accumulation of the sludge which affect the treatment capacity and
quality. As advised by the Contractor, regular checking the effluent quality by
visual test was conducted to ensure effluent quality meets on the discharge
requirement.
6.2.31
In view of the topography of the construction
site, the formation level of the site is lower than the roads bounding the site
(around 2m height difference), it is considered that
the wastewater generated on-site is not likely flowing out of the site
boundary. As advised by the
Contractor, around 90% of treated water is reused on-site (water spread for
dust suppression) whereas the rest of the treatment wastewater would be
discharge off site at the approval discharge point.
6.2.32
There were no exceedances triggered in the
subsequent monitoring result on 3 December 2015. According to the above
investigation, it is considered that the exceedance was a single event and not
likely related to the works under the Contract.
Investigation Result
for Exceedance at WM4 on 3 December 2015 (Contract 2)
6.2.33
According to the site information provided
from the Contractor of C2 (DHK), construction activities carried out on 3
December 2015 at South Portal included tunnel excavation, ventilation building
formation and superstructure which undertaken away from the Ma Wat River.
6.2.34
According to the site record from the
monitoring team during monitoring on 3 December 2015, milky water was observed
at WM4 and the water quality at WM4-CA and WM-4B were clear.
6.2.35
As informed by the Contractor of C3
(construction site at upstream of C2), burst of water main was happened within
the site area of C3 near box culvert ID4 on 3 December 2015 before the water
monitoring work. The burst water
main was a 1400mm dia. pipe which generated large amount of water. The welled water from the burst water
main cumulated in the catch pit, the Contractor of Contract 3 was immediately
diverted to turbid water from the catch pit to the nearby wastewater treatment
system No.2 for treatment to prevent the turbid water overflow from the site.
6.2.36
Since the amount of water and the flow is too
large to control, part of the water from the burst water main was flowing into
the existing channel through the underground pipes and uncompleted extension of
box culvert ID4. As water flow in
the exiting river channel was increased suddenly and milky-like water was
generated throughout the channel by water turbulence and stir up of river bed
sediment.
6.2.37
In view of the subsequent monitoring result
after 3 December 2015, no exceedances were triggered. It is considered that the exceedances
were due to the accident of burst of water main and not related to the works
under the Contract. Since the
exceedance was concluded as not project related, no increase monitoring
frequency was conducted as per the EAP.
Investigation Result
for Exceedance at WM4 on 3 December 2015 (Contract 3)
6.2.38
According to the site record from the
monitoring team during monitoring on 3 December 2015, milky water was observed
at WM4 and the water quality at WM4-CA and WM-4B were clear.
6.2.39
As informed by the Contractor, burst of water
main within the site area of both Contract 3 of LT/BCP Project and Entrusted
Works for Fanling Highway Widening was happened on 3
December 2015 before the water monitoring work. The burst water main was constructed by
the Contractor which has already handed over to WSD and the cause of burst of
water main was still under investigation.
The location of the accident is located near box culvert ID4.
6.2.40
As advised by the Contractor, the burst water
main was a 1400mm dia. pipe which generated large amount of water. The welled water from the burst water
main cumulated in the catch pit, the Contractor was immediately diverted to
turbid water from the catch pit to the nearby wastewater treatment system No.2
(WWTS No.2) for treatment to prevent the turbid water overflow from the site.
6.2.41
Since the amount of water and the flow is too
large to control, part of the water from the burst water main was flowing into
the existing channel through the underground pipes and uncompleted extension of
box culvert ID4. As water flow in
the exiting river channel was increased suddenly and milky-like water was
generated throughout the channel by water turbulence and stir up of river bed
sediment.
6.2.42
In view of the subsequent monitoring result
after 3 December 2015, no exceedances were triggered. It is considered that the exceedances
were due to the accident of burst of water main and not related to the works
under the Contract. Since the
exceedance was concluded as not project related, no increase monitoring
frequency was conducted as per the EAP.
Investigation Result
for Exceedance at WM1 on 10, 12 and 14 December 2015 (Contract 5)
6.2.43
According to the site information provided by
the Contractor, formation work at BCPD area and road works at Lin Ma Hang Road
were carried out under Contract 5 on 10, 12 and 14 December 2015. As advised by
the Contractor, no wastewater discharge was made on 10, 12 and 14 December
2015.
6.2.44
According to the field data record by ET on
10, 12 and 14 December 2015, cloudy water and accumulation of rubbish were
observed at WM1 whereas the water quality at WM1-C was visually clear.
6.2.45
According to the Daily Extract of
Meteorological Observations from the Hong Kong Observatory, a total rainfall at
44.6mm was recorded on 9 December 2015. According to the past record, turbid
water would be generated by stirring up of loose sediment at the river bed
during heavy rainstorm. Since
rubbish was flushing from upstream during rainstorm and cumulated at WM1, the
water flow near WM1 was retarded and cloudy water would be cumulated at WM1. According to the past experience, the
cloudy water generated under rainstorm would take about 5-6 days to settle and
completely flow away due to slow water flow.
6.2.46
Weekly site inspection was carried out by the
RE, Contractor, IEC and Contractor on 10 December 2015, it was noted that the
active construction works were excavation and compaction in Lin Ma Hang Road
and these works would not generate wastewater. No water impact raised from the
BCPD under Contract 5 was observed as well. However, turbid water was observed throughout
the channel including area away from the active construction area under
Contract 5
6.2.47
There were no exceedances triggered in the
subsequent monitoring result after 14 December 2015. According to the above
investigation, it is considered that the exceedances were due to residual
impact after rainstorm and not likely related to the works under the Contract.
Investigation Result
for Exceedance at WM1 on 10, 12 and 14 December 2015 (SS C505)
6.2.48
According to the site information provided by
the Contractor, the major construction activities carried out on 10, 12 and 14
December 2015 included percussive piling, bored piling, pre-boring, backfilling
and ground investigation which are illustrated in Figure 1. It is noted that the majority active
construction area was conducted at Portion 1 which not closed to Kong Yiu River.
6.2.49
According to the field data record by ET on
10, 12 and 14 December 2015, cloudy water and accumulation of rubbish were
observed at WM1 whereas the water quality at WM1-C was visually clear.
6.2.50
According to the Daily Extract of Meteorological
Observations from the Hong Kong Observatory, a total rainfall at 44.6mm was
recorded on 9 December 2015. According to the past record, turbid water would
be generated by stirring up of loose sediment at the river bed during heavy
rainstorm. Since rubbish was
flushing from upstream during rainstorm and cumulated at WM1, the water flow
near WM1 was retarded and cloudy water would be cumulated at WM1. According to the past experience, the
cloudy water generated under rainstorm would take about 5-6 days to settle and
completely flow away due to slow water flow.
6.2.51
In view of the construction activities on 10,
12 and 14 December 2015 and confirmed by the Contractor, wastewater was
generated during the bored piling work only and the wastewater was recirculated
for the piling work used. If water
discharge is required, they will follow the temporary site drainage plan in
which wastewater would be diverted to the perimeter channel and then collected
to the wastewater treatment plant for treatment before discharge. It is noted that the discharge point
connecting public drainage was located at the west of the site and the
discharge water would not flow to WM1 and its
upstream.
6.2.52
During site inspection on 16 December 2015,
soil and mud cumulated at the perimeter channel was observed and the Contractor
was advised to clear the channel regularly. No major water impact was observed
during site inspection on 16 December 2015.
6.2.53
In view of the topography of the construction
site, the formation level of the site is lower than the roads bounding the site
(around 2m height difference), it is considered that
the wastewater generated on-site is not likely flowing out of the site
boundary. As advised by the
Contractor, around 90% of treated water is reused on-site (water spread for
dust suppression) whereas the rest of the treatment wastewater would be
discharge off site at the approval discharge point.
6.2.54
There were no exceedances triggered in the
subsequent monitoring result after 14 December 2015. According to the above
investigation, it is considered that the exceedances were due to rainstorm and
not likely related to the works under the Contract.
Investigation Result
for Exceedance at WM2A on 7 and 11 December 2015 (Contract 6)
6.2.55
According
to the site information provided from the Contractor of C6, construction
activities carried out on 7 and 11 December 2015 at North Portal at far
upstream of WM2A included steel and rebar fixing and bridge footing. As advised by the Contractor, no
wastewater was generated from the works mentioned. Moreover, no construction activities
were conducted near WM2A.
6.2.56
According
to the site record from the monitoring team during monitoring on 7 and 11
December 2015, turbid water was observed at WM2A but the water WM2A-C observed
at WM2A-C was visually clear.
6.2.57
During
site inspection in early December 2015, it was observed that the Contractor has
covered the bare slopes with impervious sheeting to minimize muddy runoff and
fencing has been erected to prevent any plant crossing the river. In addition,
the Contractor was advised to set up a temporary drainage system as the
forthcoming active site area and activities are sensitive which close to the
river course.
6.2.58
As
advised by the Contractor, laying of rock fill at area adjacent to the river
course was completed and concrete bunds will be constructed along the river
course in coming stage.
6.2.59
In
view of the construction activities undertaken by the Contractor on 7 and 11
December 2015, no wastewater would be generated and discharge. Moreover, there were no rains on both
days and surface runoff from the construction site was unlikely to occur. It is considered that the exceedance was
not likely due to the contract.
Investigation Result
for Exceedance at WM3 on 9 December 2015 (Contract 2)
6.2.60
According to the site information provided
from the Contractor of C2 (DHK), construction activities carried out on 9
December 2015 at upstream of WM3 included northbound tunnel excavation, portal
formation and permanent drainage whereas the site at admin building was
idled.
6.2.61
According to the site record from the
monitoring team during monitoring on 9 December 2015, the water monitoring was
carried during rain and muddy water was observed at both WM3C and WM3.
According to the Daily Extract of Meteorological Observations from the Hong
Kong Observatory, a total rainfall at 44.6mm was recorded on 9 December 2015.
6.2.62
During weekly site inspection in November and
December 2015, it was observed that temporary drainage system and water
treatment system was implemented and operated properly at North Portal. All the
wastewater generated from the construction activities as well as the runoff
would be collected and diverted to the water treatment facilities for treatment
before discharge. Inspection for
the discharge quality was also conducted during site inspection and no adverse
water impact was observed in November and December 2015.
6.2.63
Apart from the water discharge from the
construction site, the monitored drainage channel would also collect the rain
water from the road surface via communal channel as well as water from the hill
at the vicinity. It is believed
that the water quality at monitored channel as WM3 would be deteriorated under influence
of rainfall.
6.2.64
There were no exceedances triggered in the
subsequent monitoring result after 9 December 2015. According to the above
investigation, it is considered that the exceedances were due to rainstorm and
not likely related to the works under the Contract.
Investigation Result
for Exceedance at WM3 on 9 December 2015 (Contract 6)
6.2.65
According to the site information provided
from the Contractor of C6, construction activities carried out on 9 December at
upstream of WM3 included bored pile works at Bridge A and steel and rebar
fixing at Wo Keng Shan Park.
6.2.66
According to the site record from the
monitoring team during monitoring on 9 December 2015, the water monitoring was
carried out during rain and muddy water was observed at both WM3C and WM3.
According to the Daily Extract of Meteorological Observations from the Hong
Kong Observatory, a total rainfall at 44.6mm was recorded on 9 December 2015.
6.2.67
As advised by the Contractor, as water
mitigation measures, a temporary drainage channel has been set up to divert
wastewater to the wastewater treatment facilities which under normal operation.
The effluent from wastewater treatment facilities was recirculated in the wheel
washing basin and no discharge was made.
6.2.68
Apart from the water discharge from the
construction site, the monitored drainage channel would also collect the rain
water from the road surface via communal channel as well as water from the hill
at the vicinity. It is believed
that the water quality at monitored channel as WM3 would be deteriorated under
influence of rainfall.
6.2.69
There were no exceedances triggered in the
subsequent monitoring result after 9 December 2015. It is considered that the
exceedances were due to rainstorm and not likely related to the works under the
Contract.
Investigation Result
for Exceedance at WM2B on 2, 4 and 7 December 2015 (Contract 6)
6.2.70
According to the site information provided
from the Contractor of C6, construction activities carried out on 2, 4 and 7
December at North Portal near WM2B included bored pile works and slope works.
6.2.71
According to the site record from the
monitoring team during monitoring on 2, 4 and 7 December 2015, very shallow
water was measured at WM2B and the water depth was around 0.01m. Since the
water sampling was carried out at the bridge over the drainage channel, the
sampling bucket may readily disturb the channel bed and the sampled water could
not avoid inclusion of the loose sediment and debris.
6.2.72
As advised by the Contractor, the wastewater
generated from the bored pile works was recirculated and an AquaSed
was set up aside for necessary use.
Since discharge license was not yet granted for the Contract,
self-monitoring for the effluent quality would be conducted by the Contractor
if discharge is required to ensure the discharge effluent complied with the
relevant requirements including the Technical Memorandum - Standards for
Effluents Discharged into Drainage and Sewerage Systems, Inland and Coastal
Waters. According to the
self-monitoring record by the Contractor on 2, 4 and 7 December 2015, the
treated water in the AquaSed was visually
acceptable. However, there were no
discharges made on the exceedance days due to insufficient effluent.
6.2.73
During weekly site inspection on 10 December
2015, it was observed that the wastewater treatment system was properly in
placed and no discharge was observed. Moreover, to minimize the muddy runoff
into the existing channel, the slopes adjacent to channel were covered with
tarpaulin sheet.
6.2.74
Based on our investigation, it is considered
that the exceedances were likely due to the shallow water and disturbance of
sediment at the channel bed during sampling and not related to the works under
the Contract.
Investigation Result
for Exceedance at WM2B on 9 December 2015 (Contract 6)
6.2.75
According to the site information provided
from the Contractor of C6, construction activities carried out on 9 December at
North Portal near WM2B included bored pile works and slope works.
6.2.76
According to the site record from the
monitoring team during monitoring on 9 December 2015, the water monitoring was
carried out during rain and turbid water was observed at WM2B whereas the water
at WM2B-C was clear. The water depth was around 0.04m and higher water flow was
observed as compared with non-rainy days.
According to the Daily Extract of Meteorological Observations from the
Hong Kong Observatory, a total rainfall at 44.6mm was recorded on 9 December
2015. (Figure 1)
6.2.77
During weekly site inspection on 10 December
2015, removal of silt and sediment at the existing channel was undertaken by
the Contractor. In view of the site condition, it was believed that the silt
and sediment cumulated at the channel was due to the surface runoff from the
opened slope at uphill due to the Contract during heavy rainstorm on 9 December
2015.
6.2.78
As water mitigation measures, a catch pit was
constructed under the slopes which aimed to temporary intercept and storage of
the runoff water from the site for further desilting. Moreover, the slopes
adjacent to channel were covered with tarpaulin sheet or hard paved, however,
it is considered that these measures were not sufficient to avoid muddy runoff
during heavy rain.
6.2.79
In our investigation, the Contractor was
advised to improve the capacity of the pit and construct temporary drainage
channel to collect the site runoff as recommended in the implementation
schedule for environmental mitigation measures in the EM&A Manual.
Investigation Result
for Exceedance at WM2B on 15 December 2015 (Contract 6)
6.2.80
According to the site information provided
from the Contractor of C6, construction activities carried out on 15 December
at North Portal near WM2B included bored pile works and slope works.
6.2.81
According to the site record from the
monitoring team during monitoring on 15 December 2015, very shallow water was
measured at WM2B and the water depth was around 0.01m. (Photo 1) Since the water sampling was carried out
at the bridge over the drainage channel, the sampling bucket may readily
disturb the channel bed and the sampled water could not avoid inclusion of the
loose sediment and debris.
6.2.82
During weekly site inspection on 10 December
2015, removal of silt and sediment at the existing channel was undertaken by
the Contractor. In view of the site condition, it was believed that the silt
and sediment cumulated at the channel was due to the surface runoff from the
opened slope at uphill when heavy rain on 9 December 2015.
6.2.83
As water mitigation measures, a catch pit was
constructed under the slopes which aimed to temporary intercept and storage of
the runoff water from the site for further desilting. Moreover, the slopes
adjacent to channel were covered with tarpaulin sheet or hard paved, however,
it is considered that this measure was not sufficient to avoid runoff during
heavy rain.
6.2.84
In our investigation, the Contractor was
advised to improve the capacity of the pit and construct temporary drainage
channel to collect the site runoff as recommended in the implementation
schedule for environmental mitigation measures in the EM&A Manual.
Investigation Result
for Exceedance at WM2B on 17, 19, 21 and 23 December 2015 (Contract 6)
6.2.85
During water monitoring at WM2B on 17, 19, 21
and 23 December 2015, it was observed that the water flowing at WM2B was
visually clear but there were observable cumulated sediment at the channel
bed. Since the water level of WM2B
was very shallow (~0.01m), the sampled water could not avoid inclusion of the
sediment and silt at the channel bed.
It is considered that the exceedances were due to disturbance of
sediment and silt at the channel bed when the sample collected under shallow
water.
Investigation Result
for Exceedance at WM2B on 31 December 2015 (Contract 6)
6.2.86
According to the site information provided
from the Contractor of C6, construction activities carried out on 31 December
2015 at North Portal at upstream of WM2B included bored piling and channel
clearing.
6.2.87
According to the site record from the
monitoring team during monitoring on 31 December 2015, very shallow water was
measured at WM2B and the water depth was around 0.01m. Since the water sampling was carried out
at the bridge over the drainage channel at shallow water, the sampled water
could not avoid inclusion of the loose sediment and debris.
6.2.88
As advised by the Contractor, channel
clearing for removal of sediment and muddy water was undertaken by the
Contractor on 31 December 2015 after rainfall. In view of the site condition, it was
believed that the sediment and muddy water cumulated at the channel was due to
the runoff from the opened slope at uphill when heavy rain on 31 December
2015. As water mitigation measures,
a sump pit with temporary channel were constructed under the slopes to divert
the site runoff for temporary storage and primarily desilting before divert to
the AquaSed.
Moreover, the slopes adjacent to channel were covered with tarpaulin
sheet or hard paved to minimise muddy runoff during
rain. The Contract was advised to enhance the water mitigation measures to cope
with the runoff due to rain.
6.2.89
During the process of the channel clearing,
the Contractor would trap the muddy water by sand bags and pump the muddy water
to the wastewater treatment system for de-silting. However, the remaining silt at the river
bed was difficult to clear and collect and unavoidably flowing to downstream
along with the nature water flow.
6.2.90
The Contractor has enhanced the water
mitigation measures in early January 2016 to resolve the runoff problem.
Another sump pits with temporary channel were constructed under the slopes Moreover, the slopes adjacent to channel
were covered as far as possible with tarpaulin sheet or hard paved to minimise muddy runoff during rain. Moreover, hydro-seeding at the
stabilized slope would be applied in forthcoming stage.
6.2.91
There were no exceedance recorded at WM2B on
4 and 5 January 2016. Nevertheless, the Contractor should continue to fully
implement the water mitigation measures as recommended in the implementation
schedule for environmental mitigation measures in the EM&A Manual.
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 2 |
Contract 3 |
Contract 5 |
Contract 6 |
Contract SS C505 |
Total Quantity |
|||||
Qty. |
Disposal location |
Qty. |
Disposal location |
Qty. |
Disposal location |
Qty. |
Disposal location |
Qty. |
Disposal location |
||
C&D Materials (Inert) (in '000m3) |
50.4888 |
-- |
3.158 |
-- |
0 |
-- |
51.601 |
-- |
0.663 |
-- |
105.9108 |
Reused in this Contract (Inert) (in '000 m3) |
0.8455 |
-- |
1.600 |
-- |
0 |
-- |
11.077 |
-- |
0 |
-- |
13.5225 |
Reused in other Contracts/ Projects (Inert) (in '000 m3) |
49.2509 |
C6/ NENT# &
other projects approved by the ER |
0 |
-- |
0 |
-- |
6.827 |
C5 & other projects
approved by the ER |
0 |
-- |
56.0779 |
Disposal as Public Fill (Inert) (in '000 m3) |
0.3925 |
Tuen Mun 38 |
1.558 |
Tuen Mun 38 |
0 |
-- |
33.697 |
Tuen Mun 38 |
0.663 |
TKO 137 |
36.3105 |
Remark #: The
C&D materials were delivered to NENT for reuse by laying cover of the
landfilling area.
Table 7-2 Summary
of Quantities of C&D Wastes for the Project
Type of Waste |
Contract 2 |
Contract 3 |
Contract 5 |
Contract 6 |
Contract SS C505 |
Total Quantity |
|||||
Qty. |
Disposal location |
Qty. |
Disposal location |
Qty. |
Disposal location |
Qty. |
Disposal location |
Qty. |
Disposal location |
||
Recycled Metal (¡¥000kg) # |
5.6100 |
Licensed collector |
0 |
- |
0 |
-- |
0 |
-- |
0 |
-- |
5.6100 |
Recycled
Paper / Cardboard Packing (¡¥000kg) # |
0.4000 |
Licensed collector |
0 |
- |
0 |
-- |
0.147 |
Licensed collector |
0 |
-- |
0.547 |
Recycled Plastic (¡¥000kg) # |
0 |
-- |
0.001 |
Licensed collector |
0 |
-- |
0 |
-- |
0 |
-- |
1m3 |
Chemical Wastes (¡¥000kg) # |
0.8800 |
Licensed collector |
0.0006 |
Licensed collector |
0 |
-- |
0 |
-- |
0 |
-- |
880kg+ 0.6m3 |
General Refuses (¡¥000m3) |
0.0446 |
NENT |
0.145 |
NENT |
0.07 |
NENT |
0.08 |
NENT |
0.111 |
NENT |
0.4506 |
Remark #: Unit
of recycled metal, recycled paper/ cardboard packing, recycled plastic and
chemical waste for Contractor 3 was in (¡¥000m3).
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.
Contract 2
8.2.1
In the Reporting Period, joint site
inspection for Contract 2 to evaluate the site environmental performance has
been carried out by the RE, IEC, ET and the Contractor on 4, 11, 18, 23 and 30 December 2015. No non-compliance was noted.
8.2.2
The findings / deficiencies of Contract
2 that observed during the weekly site inspection are listed in Table
8-1.
Table 8-1 Site
Observations for Contract 2
Date |
Findings / Deficiencies |
Follow-Up Status |
4 December 2015 |
Air compressor without drip tray was observed at north bound tunnel.
(South Portal) |
Drip tray was provided.. |
11 December 2015 |
No adverse environmental were observed. |
NA |
18 December 2015 |
Chemical container without drip tray and chemical label was observed.
Drip tray and chemical label should be provided for chemical container
storage on site. (South Portal) |
Chemical container without drip tray was removed. |
23 December 2015 |
Oil drum without drip tray was observed. Contractor should provide drip
tray for all chemical storage on site. (Admin-building) |
Oil drum was removed from site. |
30 December 2015 |
Oil drum without drip tray was observed. The contractor should provide
drip tray for all chemical storage on site. (South Portal) |
Oil drum was removed from site. |
As a reminder, the contractor should install the de-silting facilities
as soon as possible and make sure all discharge water should comply with
discharge license requirement. |
Not required for reminder. |
Contract 3
8.2.3
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, 21 and 28 December 2015. No non-compliance was noted.
8.2.4
The findings / deficiencies of Contract
3 that observed during the weekly site inspection are listed in Table
8-2.
Table 8-2 Site
Observations for Contract 3
Date |
Findings / Deficiencies |
Follow-Up Status |
7 December 2015 |
Stagnant water cumulated inside the drip tray was observed, the
Contractor should remove the stagnant water after rain regularly. (SA11B) |
Stagnant water cumulated inside the drip tray was removed. |
Muddy water discharge was observed, the Contractor should ensure the
wastewater has sufficient sedimentation time for treatment. (SA12) |
Discharge of muddy water was ceased immediately. |
|
16 December 2015 |
Continuous white smoke emitted from the generator was observed. (AB8
Pier) |
No white smoke was observed. |
It was reminded that tarpaulin sheet cover should be provided for
storage bagged cement which more than 20 bags. |
Not required for reminder. |
|
It was reminded that NRMM label should be displayed within 14 days after
the machinery granted the label. |
Not required for reminder. |
|
21 December 2015 |
Chemical container without drip tray was observed, Muddy trails were
observed at the site exit, the Contractor should provide wheel washing
facility and ensure all vehicles were washed before leaving the site. (SA2) |
Water hose was provided at the site exit |
Milky water generated from construction activities was observed, the
Contractor should provide proper mitigation measures to divert the milky
water for proper treatment and prevent further water pollution. (Bridge E) |
No milky water was observed. |
|
28 December 2015 |
Muddy water was observed from the outfall of Chun Wo site office. The
Contractor should ensure all wastewater was treated before discharge. |
No muddy water was observed from the outfall. |
The Contractor was reminded to maintain the wheel washing facility and
ensure all vehicles were washed before leaving the site to keep the public
road clean. |
Not required for reminder. |
Contract 5
8.2.5
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, 16, 24 and 31 December 2015. No non-compliance was noted.
8.2.6
The findings / deficiencies of Contract
5 that observed during the weekly site inspection are listed in Table
8-3.
Table 8-3 Site
Observations for Contract 5
Date |
||
3 December 2015 |
No adverse environmental were observed. |
NA |
10 December 2015 |
The Contractor was reminded to provide mitigation measures for open slope
to prevent runoff and dust control. |
Not required for reminder. |
16 December 2015 |
Tree protection should be provided to prevent tree damage. |
The tree at LMH near Police Station has been fenced off. |
Chemical oil container without drip tray was observed. To prevent land
contamination, the Contractor shall provide drip tray or remove it. |
The chemical oil container was removed and stored properly and the oil
stain was treated as chemical waste. |
|
It was reminded that dust
mitigation measures shall be properly implemented to prevent construction
dust emission. during dry and windy season. |
Not required for reminder. |
|
24 December 2015 |
Asphalt material leakage through a container was observed, the Contractor
should remove the asphalt material. (Location: LMH Road) |
The asphalt material has been removed from the public road. |
The Contractor was reminded to extend the site fencing and provide sand
bags at the site entrance/exit at LMH site office to prevent soil and gravel
runoff. |
Not required for reminder. |
|
31 December 2015 |
The Contractor was reminded that all vehicles should be washed off all
dusty material before leaving site area. |
Not required for reminder. |
Contract 6
8.2.7
In the Reporting Period, joint site
inspection for Contract 6 to evaluate the site environmental performance has
been carried out by the RE, IEC, ET and the Contractor on 3, 10, 17, 23 and 30 December 2015. No non-compliance was noted.
8.2.8
The findings / deficiencies of Contract
6 that observed during the weekly site inspection are listed in Table
8-4.
Table 8-4 Site
Observations for Contract 5
Date |
Findings / Deficiencies |
Follow-Up Status |
27 November 2015 (last Reporting Month) |
Oil drum without drip tray was observed. (Bridge C Don Don Hill) |
Oil drums have been removed. (Bridge C Don Don Hill) |
Oil leakage on ground was observed. The contractor should clean up to
prevent further contamination. (Bridge C Don Don Hill) |
The oil leakage has been cleaned up as chemical waste |
|
3 December 2015 |
NRMM label is not provided for an excavator, the Contractor should
provide proper NRMM label before using. (Bridge C) |
The NRMM label for this excavator is under application, the reference
number for the application is now provided |
The Contractor was reminded that all vehicles should be washed before
leaving the site. And the site exit/entrance should be kept clean of mud.
(BCP) |
Not required for reminder. |
|
The Contractor was reminded to check the tree¡¦s states and provide
proper label and protective measures. (BPC) |
Not required for reminder. |
|
10 December 2015 |
Gravel and muddy water runoff from the wheel washing bay was observed,
the Contractor should improve the vehicle washing system to prevent any
runoff to the public road. (Bridge D) |
Vehicle washing procedure is enhanced. Washing on the public road is
also provided to maintain cleanliness |
The Contractor should improve the mitigation measures for the internal
stream division within the site boundary to avoid surface runoff from the site.
(Bridge C) |
Preliminary cement layer has been fully provided on the exposed surface
for the diversion channel and no muddy water was observed afterward. |
|
17 December 2015 |
Dusty stockpiles without proper covering were observed, the Contractor
should cover the stockpile with impervious sheeting to minimize dust
generation. (Bridge C) |
The stockpiles have been removed. |
Open slope was observed, the Contractor should cover the slope to
prevent dust nuisance. (Bridge C) |
The exposed slope has been covered with tarpaulin. |
|
The Contractor should pave the exposed surface along the drainage-side.
(Bridge C) |
Exposed surface along the drainage-side has been paved with cement. |
|
The Contractor is reminded to provide more water sprinklers along the
haul road. |
Not required for reminder. |
|
Portal, the Contractor is reminded to clean up the sediment on the
channel bed. (North Portal) |
Not required for reminder. |
|
23 December 2015 |
Mud trace on public road near the site exit was observed. The Contractor
should maintain the road leading to the site clean and tidy. (Location:
Bridge D) |
Gravel has be cleared off from public road surface. |
Earth bund should be provided for the temporary bridge to prevent
surface run-off discharge intro the Kong Yiu Channel. |
Beam barrier has been reconstructed so as to prevent run-off from
entering Kong Yiu Rive |
|
Notice sign should be properly displayed leading site vehicles to wheel
washing facilities before leaving from the site. (Location: General &
Bridge C & D) |
Not required for reminder. |
|
EP and license should be properly displayed at all site entrance/exit.
(Location: General & BCP) |
Not required for reminder. |
|
30 December 2015 |
Lifting eye of the concrete block should be filled with sand to prevent
stagnant water accumulation. (Bridge A) |
The lifting eye of the concrete block was filled with sand. |
Dust mitigation should be provided for the stockpile storage on-site.
(Bridge A) |
The stockpile was covered with tarpaulin sheet. |
Contract SS C505
8.2.9
In the Reporting Period, joint site
inspection for Contract SS C505 to evaluate the site environmental performance
has been carried out by the RE, IEC, ET and the Contractor on 2, 9, 16, 23 and 30 December 2015. No non-compliance was noted.
8.2.10
The findings / deficiencies of Contract
SS C505 that observed during the weekly site inspection are listed in Table
8-5.
Table 8-5 Site
Observations for Contract SS C505
Date |
Findings / Deficiencies |
Follow-Up Status |
2 December 2015 |
As a reminder, all NRMM using on site should gained the label or in
under application under the NRMM Regulation. |
Not required for reminder. |
9 December 2015 |
No adverse environmental were observed. |
NA |
16 December 2015 |
The Contractor should provide a plug for the drip tray under the generator
at Portion 2. |
A stopper was provided for the drip tray under the generator at Portion
2. |
The Contractor was reminded to enhance dust mitigation measures on site
to reduce dust generation. |
Not required for reminder. |
|
23 December 2015 |
No adverse environmental were observed. |
NA |
30 December 2015 |
The Contractor should provide the approval/exception label to the
generator at Portion 1 under the NRMM regulation. |
Approval label was provided. |
Stagnant water was observed at the drip tray under the generation at
Portion 2, the Contractor should clear the stagnant water for mosquito
breeding prevention. |
Stagnant water at drip tray was removed. |
|
The Contractor was reminded to cover the cement bags well with
impervious sheet on site. |
Not required for reminder. |
8.2.11
Overall, general housekeeping such as daily
site tidiness and cleaniness should be
maintained for all Contracts. Furthermore, the Contractors were
reminded to implement Waste Management Plan of the Project.
Other Contracts
8.2.12
Since the construction works at the Contract
4 and Contract 7 have not yet been commenced, no site inspection is performed
for these Contracts.
9.1.1
In
the Reporting Period, no summons and prosecution under the EM&A Programme was lodged for Contracts 2, 3 and 5. However, two (2) documented
environmental complaint was received and lodged for Contracts 6.
9.1.2
Upon
receipt of the complaint, follow up action has been undertaken by both
Contractor promptly to resolve the complaints and deficiencies. During the complaint investigation work,
the Contractor was co-operated with the ET in providing all the necessary information
and assistance for completion of the investigation. Follow up actions have been undertaking
by the Contractor to resolve the deficiencies The details of complaint are
listed below:-
Investigation Result for Complaint on 1
December 2015
9.1.3
On
1 December 2015, EPD received a complaint from a villager in Ping Yeung Village
which adjacent to the construction site of Bridge C under Contract 6 regarding
the dust emission Site inspection was conducted by EPD
and Contractor at Bridge C on 1 and 2 December 2015 to investigate the cause of
complaint and an inspection form (yellow ticket) was issued to the Contractor
on 2 December 2015. EPD observed
that general dust mitigation measures as per the Implementation Schedule of the
EM&A Manual have been implemented at Bridge C. However, EPD expressed that the dust
emission control should be enhanced as follows:-
a)
The
remaining exposed surface and the stockpiled soil should be covered entirely
with tarpaulin sheet / dust net;
b)
Water
spraying should be enhanced for the breaking, excavation and loading/unloading
works;
c)
The
site access and the site haul road should be watered more frequently.
9.1.4
A
joint site inspection was carried out by the RE, Contractor, IEC and ET on 3
December 2015 at Bridge C for complaint investigation. The observed dust
control measures implemented by the Contractor during site inspection are
summarized below.
a)
The
exposed surface was partially covered with tarpaulin sheet / dust net and the
Contractor will cover the remaining exposed surface within a week; (Water
spraying by site labor and water lorry to maintain the haul road and access
road wetted;
b)
Continuous
water spraying was applied for dusty works to suppress fugitive dust;
c)
Water
sprinklers were provided for the excavation works to suppress fugitive dust
d)
Wheel
washing facility with wastewater treatment facility was provided and functioned
properly;
e)
It is
controlled that the site vehicles travelling within the speed limit not more
than 10km/hr
9.1.5
Based
on the site condition on 3 December 2015, it is considered that the Contractor
has implemented the dust suppressive measures appropriately. As advised by the Contractor, they will
further enhance the measures as recommended by EPD.
9.1.6
A
joint site inspection by the representative of EPD, RE, Contractor was carried
out on 16 December 2015 at Bridge C to follow up the status of dust control
enhancement work conducted. The observation during the site inspection are
summarized as follows:-
a)
Water
sprinklers were provided for the dusty works such as excavation;
b)
Water
tanks and pressure pumps was installed for enhancement of water spraying and
the water sprinklers;
c)
Water
spraying with water lorry for the site haul road;
d)
The
exposed surface was covered entirely with tarpaulin sheet / dust net;
e)
Water
spraying was carried out for the stockpile material;
f)
Wheel
washing facility with wastewater treatment facility was provided and functioned
properly;
g)
The
site haul road was paving with rock for dust suppression
9.1.7
Based
on the observation during site inspection on 16 December 2015, EPD was
satisfied enhancement work conducted by the Contractor and no further dust
complaint was received. Moreover,
according to the air quality monitoring result during the recent months, there
were no exceedances triggered which implied that the dust mitigation measures
implemented by the Contractor are effective.
Investigation Result for Complaint on 16
December 2015
9.1.8
A
public complaint was received by EPD on 16 December 2015 regarding muddy water
discharge at Bridge C to a fish pond nearby.
9.1.9
According
to the information provided by the Contractor and observation during site
inspection on 3 and 10 December 2015, the construction activities carried out
at Bridge C in early December 2015 include slope cutting and soil
stockpiling. No wastewater was
generated from the active site activities.
As advised by the Contractor, a temporary drainage system was under
construction and it will be properly in placed. The water mitigation measures provided
on site are summarized in follows:-
(a)
Provision of wastewater treatment
facilities (AquaSed) for the wastewater generated
from the wheel washing basin
(b)
Covering the stockpile with impervious
sheeting to minimize muddy runoff
9.1.10
A
joint site inspection by the EPD, RE and Contractor was carried out on 16
December 2015 at Bridge C for the complaint investigation. During the site inspection, the fish
pond by mentioned the complainant was not found. Moreover, no muddy water discharge from
the site was observed.
Nevertheless, the Contractor was advised to improve the temporary
drainage system at Bridge C as follows:-
(a)
The temporary drainage system at the slope
toe of Bridge C should be constructed so that surface runoff and waste water
can be effectively delivered to AquaSed.
(b)
Exposed surface should either be paved or
well covered.
(c)
Temporary drainage channels should be
paved by cement or geotextile so as to reduced contamination of water by loose
soil
(d)
Regular and frequent removal of silt in
open channels.
(e)
Wastewater treatment facilities should be
maintained to ensure they are under normal function.
9.1.11
Further
to the EPD site inspection at Bridge C on 16 December 2015, the Contractor has
rectified the deficiencies on 28 December 2015. Site inspection was carried out by the
RE, IEC, Contractor and ET on 30 December 2015 to follow up the status of
rectification works undertaken by the Contractor. The observed water mitigation measures
provided by the Contractor was summarized in following:-
(a)
The temporary drainage has been
constructed at the slope toe of the stockpile soil in order to divert any muddy
runoff to the wastewater treatment facilities
(b)
The exposed surface has been concreted to
minimize muddy runoff
(c)
A temporary drainage channels have been
concreted
(d)
The exposed surface of the temporary
system has been covered with geo-textile.
(e)
The open channels have been cleaned
regularly
9.1.12
It
is considered that the Contractor has improved the mitigation measure as
advised by the EPD. The ET will
closely inspect the implementation of water quality mitigation measure
conducted by the Contractor during the construction phase.
9.1.13
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 |
||
19 May 2014 ¡V 30 Nov2015 |
Contract 2 |
0 |
13 |
(6) Water Quality (5) Construction Dust (2) Noise |
06 Nov 2013 ¡V 30 Nov20152015 |
Contract 3 |
0 |
3 |
(1) Construction Dust (2) Water quality |
16 Aug 2013 ¡V 30 Nov20152015 |
Contract 5 |
0 |
2 |
(2) Construction Dust |
1 ¡V 31 December 2015 |
Contract 2 |
0 |
13 |
(6) Water Quality (5) Construction Dust (2) Noise |
Contract 3 |
0 |
3 |
(1) Construction Dust (2) Water quality |
|
Contract 5 |
0 |
2 |
(2) Construction Dust |
|
Contract 6 |
2 |
3 |
(2) Water Quality (1) construction Dust |
|
SS C505 |
0 |
0 |
N/A |
Table 9-2 Statistical
Summary of Environmental Summons
Reporting Period |
Contract No |
Environmental
Summons Statistics |
||
Frequency |
Cumulative |
Complaint Nature |
||
19 May 2014 ¡V 30 Nov2015 |
Contract 2 |
0 |
0 |
NA |
06 Nov 2013 ¡V 30 Nov20152015 |
Contract 3 |
0 |
0 |
NA |
16 Aug 2013 ¡V 30 Nov20152015 |
Contract 5 |
0 |
0 |
NA |
1 ¡V 31 December 2015 |
Contract 2 |
0 |
0 |
NA |
Contract 3 |
0 |
0 |
NA |
|
Contract 5 |
0 |
0 |
NA |
|
Contract 6 |
0 |
0 |
NA |
|
SS C505 |
0 |
0 |
NA |
Table 9-3 Statistical
Summary of Environmental Prosecution
Reporting Period |
Contract No |
Environmental
Prosecution Statistics |
||
Frequency |
Cumulative |
Complaint Nature |
||
19 May 2014 ¡V 30 Nov2015 |
Contract 2 |
0 |
0 |
NA |
06 Nov 2013 ¡V 30 Nov20152015 |
Contract 3 |
0 |
0 |
NA |
16 Aug 2013 ¡V 30 Nov20152015 |
Contract 5 |
0 |
0 |
NA |
1 ¡V 31 December 2015 |
Contract 2 |
0 |
0 |
NA |
Contract 3 |
0 |
0 |
NA |
|
Contract 5 |
0 |
0 |
NA |
|
Contract 6 |
0 |
0 |
NA |
|
SS C505 |
0 |
0 |
NA |
The Other Contracts
9.1.14
Since the construction works at the Contract
4 and Contact 7 have 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 2, 3, 5, 6 and Contract SS C505 in this
Reporting Period are summarized in Table 10-1.
Table 10-1 Environmental
Mitigation Measures
Issues |
Environmental
Mitigation Measures |
Water Quality |
¡P Wastewater to be treated by the
wastewater treatment facilities i.e. sedimentation tank or AquaSed before
discharge. |
Air Quality |
¡P Maintain damp / wet surface
on access road ¡P Keep slow speed in the sites ¡P All vehicles must use wheel
washing facility before off site ¡P Sprayed water during
breaking works ¡P A
cleaning truck was regularly performed on the public road to prevent fugitive dust emission |
Noise |
¡P Restrain operation time of
plants from 07:00 to 19:00 on any working day except for Public Holiday and
Sunday. ¡P Keep good maintenance of
plants ¡P Place noisy plants away from
residence or school ¡P Provide noise barriers or
hoarding to enclose the noisy plants or works ¡P Shut down the plants when
not in used. |
Waste and Chemical Management |
¡P On-site sorting prior to
disposal ¡P Follow requirements and
procedures of the ¡§Trip-ticket System¡¨ ¡P Predict required quantity of
concrete accurately ¡P Collect the unused fresh
concrete at designated locations in the sites for subsequent disposal |
General |
¡P 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 2
Mid-Vent Portal |
Tube
excavation (NB+SB) Adit invert
slab Building
works foundation |
North Portal |
Retaining walls and slope stabilization
South Bound tunnel internal works and
finishes
North top heading enlargement
TBM excavation |
South Portal |
Southbound and
Northbound D&B excavation
Building works superstructure |
Admin Building |
Building
works foundation |
Contract 3
Cable detection and trial trenches
Decking construction for Bridge E
E&M work for new valve control &
Telemetry House
Filling works at Tong Hang East
Storm Drains Laying
Noise barrier construction
Pier / Pier Table construction
Pile cap works
Portal beam erection
Pre-drilling works and piling works for
viaduct
Retaining Wall construction
Road works at Fanling
Highway
Slope works
Socket H-pile installation
Tree felling works
Utilities duct laying
Viaduct segment erection
Water works
Sewer works
Contract 5
Laying of additional rising main at LMH road
Bituminous laying at
proposed and existing LMH road.
Brick laying at footpath of proposed LMH road
Road works (kerb and
bituminous laying) for proposed LMH road and existing LMH road
Construction of access road (RS4)
Drainage works at Depressed Road at BCP3
Drainage works at existing LMH Road
Irrigation system at existing LMH Road
Installation of underground utilities at
existing LMH Road
Construction of Pavilion at Chung Yuen Ha Village
Contract 6
Site Clearance
Slope Works
Site Accesses Construction
Ground Investigation Works
Soil Nail
Bored Piling
Contract
SS C505
Excavation & fill works
Predrilling
Percussive piling
Pre-boring
Bored piling
Pile caps
Site office set-up
Structural works
Assembly of crawler crane
Mock up for curtain wall
Weighbridge works
Construction of Prototype A
10.3.1
Key issues to be considered in the coming
month for Contracts 2, 3, 5,6 and SS C505 include:
Implementation of
control measures for rainstorm;
Regular clearance of
stagnant water during wet season;
Implementation of dust
suppression measures at all times;
Potential wastewater
quality impact due to surface runoff;
Potential fugitive
dust quality impact due from the dry/loose/exposure soil surface/dusty
material;
Disposal of empty
engine oil containers within site area;
Ensure dust suppression measures are
implemented properly;
Sediment catch-pits and silt removal
facilities should be regularly maintained;
Management of chemical wastes;
Discharge of site effluent to the nearby
wetland, stockpiling or disposal of materials, and any dredging or construction
area at this area are prohibited;
Follow-up of improvement on general waste
management issues; and
Implementation of construction noise
preventative control measures
10.3.2
Contract 4 and Contact 7 have not yet
commenced and no environmental issue is presented.
11.1.1
This is 29th
monthly EM&A report presenting the monitoring results and inspection
findings for the Reporting Period from 1 to 31 December 2015.
11.1.2
For air quality monitoring, no 1-hour and
24-hour TSP monitoring results 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, total of thirty-five
(35) Limit Level exceedances, namely eighteen (18) exceedances of turbidity and
seventeen (17) exceedances of suspended solids recorded The investigations for the cause of
exceedances have been conducted by the ET and the associated investigation reports were submitted to
relevant parties
11.1.5
No notification of summons or successful
prosecution under the EM&A Programme of the
Project was received in the reporting period for Contract 2, 3, 5, 6 and SS
C505.
11.1.6
In this Reporting Period, two (2) documented
environmental complaint was received and lodged for Contracts 6 regarding
construction dust and muddy water discharge on 1 and 16 December 2015
respectively. Follow up actions
have been undertaking by the Contractor to resolve the deficiencies and investigation
report conducted by ET had submitted to all relevant parties.
11.1.7
During the Reporting Period, weekly joint
site inspection by the RE, IEC, ET with the relevant Main-contractor were
carried out for Contracts 2, 3, 5, 6 and SS C505 in accordance with the
EM&A Manual stipulation. No
non-compliance observed during the site inspection.
11.2.1
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.
11.2.2
The Contractor was also
reminded to prevent muddy water or other water pollutants from site surface flow
to local stream such as Kong Yiu Channel, Ma Wat
Channel, Ping Yuen River or public area.
Water quality mitigation measures to prevent surface runoff into nearby
water bodies or public areas should paid attention and fully implemented.
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.
11.2.4
Furthermore, daily cleaning and weekly tidiness shall be properly performed
and maintained. In addition, mosquito
control should be kept to prevent mosquito breeding on site.