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AUES Job No.: TCS00715/14
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Tuen Mun - Chek Lap Kok Link
Contract No. HY/2013/12 –
Northern Connection Toll Plaza and Associated Works
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2nd Quarterly Environmental
Monitoring & Audit Summary Report –
(February to April 2015)
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Prepared
For
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CRBC
and Kaden Joint Venture
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Quality Index
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Date
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Reference No.
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Prepared By
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Certified By
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27 May 2015
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TCS00715/14/600/R0093v2
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Ben
Tam
(Environmental Consultant)
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T.W. Tam
(Environmental Team Leader)
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This
report has been prepared by Action-United Environmental Services &
Consulting with all reasonable skill, care and diligence within the terms of
the Agreement with the client, incorporating our General Terms and Conditions
of Business and taking account of the resources devoted to it by agreement
with the client. We disclaim any responsibility to the client and others in
respect of any matters outside the scope of the above. This report is
confidential to the client and we accept no responsibility of whatsoever
nature to third parties to whom this report, or any part thereof, is made
known. Any such party relies upon the report at their own risk.
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1.1.1. CRBC-Kaden
Joint Venture (hereafter “CRBC-Kaden JV”) is commissioned by the
Highways Department (HyD) as the Main Contractor of
the Contract No. HY/2013/12 – Northern
Connection Toll Plaza and Tunnel Section ((hereafter “the Contract”) and this
Contract is part of the Tuen Mun
– Chek Lap Kok Link (TM-CLK
Link Project). TM-CLK Link Project
is a Designated Project under Environmental Permit number VEP-354/2009C issued on 10 December 2014. The
layout Plan of the Project and the Contract are showed
in Appendix A and B
respectively.
1.1.2.
The construction works
of the Contract mainly include:-
a.
construction of an approximately 5.4 hectares
toll plaza and an associated footbridge;
b.
construction of associated carriageways
including approximately 0.74 kilometre land viaducts,
and an approximately 230 metres vehicular underpass
to connect the toll plaza and the roundabout at Lung Mun Road/Lung Fu Road;
c.
site formation for the construction of the
toll plaza, including associated slope works and natural terrain hazard
mitigation measures;
d.
modification and realignment of the existing
Lung Mun Road and Lung Fu Road; and
e.
associated
waterworks, drainage, sewerage and landscaping works, etc..
1.1.3.
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.
1.1.4.
This is the 2nd
Quarterly EM&A Summary Report covering the period
from 1
February to 30 April 2015.
1.2.1
The Monthly Environmental Monitoring and
Audit (EM&A) Report is structured into the following sections:-
Section 1 Introduction
Section 2 Contract
Organization and Construction Progress
Section 3 Summary
of Impact Monitoring Requirements
Section 4 Air
Quality Monitoring
Section 5 Ecology
Monitoring
Section 6 Cultural
Heritage
Section 7 Landscape
and Visual
Section 8 Landfill
gas hazard Monitoring
Section 9 Waste
Management
Section 10 Site Inspections
Section 11 Environmental
Complaints and Non-Compliance
Section 12 Implementation
Status of Mitigation Measures
Section 13 Conclusions
and Recommendations
2.1.1
The Contract organization and contact details
of key personnel are shown in Appendix C.
2.2.1
In the Reporting Period, the major
construction activity conducted under the Contract is summarized in below. Moreover, the master construction
program is enclosed in Appendix D.
February 2015
Ÿ
Bridge Work – Portion X
Ÿ
Site Formation – Portion X
Ÿ
Underpass – Portion X
Ÿ
Retaining Wall Structure TP_F & RW_B – Portion
X
Ÿ
Footbridge FB1 – Portion X
Ÿ
Ground Investigation Works – Various Locations
Ÿ
Site Clearance – Various Locations
Ÿ
Tree Felling – Various Locations
March 2015
Ÿ
Instrumentation and Monitoring
Ÿ
Site Formation to Slope A, B, C, D, E, TP_F and
Upgrading Works
Ÿ
Excavation to Slope A, B,C,D & E
Ÿ
Vehicular Underpass TN-01
Ÿ
Construction of Culvert 1-Stage 4 & Conforming
design
Ÿ
Bridge TD1, Bridge G1, G2,Bridge H1& Footbridge
Ÿ
Retaining Structure RW_B-Section 1
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Ground Investigation Works – Various Locations
Ÿ
Site Clearance – Various Locations
Ÿ
Tree Felling – Various Locations
Ÿ
Natural terrain hazard mitigation measures
April 2015
Ÿ Site Formation to Slope A, B, C, D, E, TP_F and Upgrading Works
Ÿ Toll Plaza Decking TD1, TD2
Ÿ Retaining Structure RW_B-Section 1
Ÿ Instrumentation and Monitoring
Ÿ Bridge TD1,TD2, Bridge G1, G2,Bridge H1& Footbridge
Ÿ Construction of Culvert 1-Stage 4
Ÿ Site Clearance
Ÿ Tree Felling
2.3 Summary of Environmental Submissions
2.3.1
In according to the EP, the required documents
have submitted to EPD for retention which listed in below:
Ÿ
Monitoring Plan on Construction Dust
(submission refer to Contract HY/2012/08)
Ÿ
Landscape and Visual Plan (not yet endorsed by EPD)
Ÿ
Waste Management Plan (endorsed by EPD on 16 March 2015)
Ÿ
Baseline Monitoring Report (not yet endorsed
by EPD)
2.3.2
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
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No.
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Type of Permit/
License
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Submission Date
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Reference/
License No.
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Date of Issue
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Date of Expiry
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1
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Air pollution Control (Construction Dust)
Regulation
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06-08-2014
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377719
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06-08-2014
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N/A
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2
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Chemical Waste Producer Registration -
Waste Producers Number
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06-08-2014
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5117422C389301
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03-09-2014
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N/A
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3
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Water Pollution Control Ordinance -
Discharge License
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13-08-2014
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WT00020065-2014
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29-09-2014
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30-09-2019
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4
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Waste Disposal Regulation - Billing Account
for Disposal of Construction Waste
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21-07-2014
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7020460
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01-08-2014
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N/A
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5
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Permission
to Transplant Pitcher Plant
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02-12-2014
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(7) in AF CON 11/13 pt.4
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09-12-2014
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08-06-2015
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6
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CNP for Multiple Task
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05-12-2014
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GW-RW0949-14
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05-12-2014
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04-05-2015
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7
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CNP for GI works
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23-2-2015
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GW-RW0134-15
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16-03-2015
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07-04-2015
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3.1.1
The major construction activities under the
Contract are land-based and no marine work will be involved. In accordance with the Project EM&A
Manual requirements, the environmental aspects under the Contract shall be included
air quality, ecological, cultural heritage, landscape and visual, landfill gas and
site inspection during construction period. In addition, audit of the contractor’s
implementation of the construction noise and land-based water quality pollution
control measures are also required for the Contract.
3.1.2
A summary of construction phase EM&A
requirements are presented in the
sub-sections below.
3.2.1
The construction phase monitoring air quality
shall cover the following parameters:
•
1-hour TSP; and
•
24-hour TSP
3.3.1
The air quality
monitoring stations for impact monitoring are listed in Table 3-1
and illustrated in Appendix E.
Table
3-1 Air
Quality Monitoring Stations under the Contract
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ID
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Location
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Air monitoring station
Description
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ASR1
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Tuen Mun Fireboat Station
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EM&A Manual
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ASR5
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Pillar Point Fire Station
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EM&A Manual
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AQMS1
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Previous River Trade Golf
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Enhanced TSP Level under EP condition 2.4
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ASR6
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Butterfly Beach Laundry
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Enhanced TSP Level under EP condition 2.4
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ASR10
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Butterfly Beach Park
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Enhanced TSP Level under EP condition 2.4
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3.4.1
As per Condition 2.4 of the EP of TM-CLKL, an
enhanced monitoring plan on TSP level at Tuen Mun (“the Enhanced TSP Monitoring
Plan”) is required to be submitted to the DEP for approval at least 1 month
before the commencement of construction of the Project. Details of the Enhanced TSP Monitoring
Plan under Contract No. HY/2012/08 could be found from the project website. The
air quality monitoring work under this Contract will follow the monitoring
requirement of enhanced TSP monitoring under the project.
3.4.2
The air quality monitoring requirements for
the Contract is summarized in Table 3-2.
Table
3-2 Enhanced
TSP Monitoring Plan – Construction Phase
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Condition
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Monitoring Parameter
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Monitoring Location
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Frequency
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Monitoring Requirement
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General
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1-hour TSP
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ASR1, ASR5, AQMS1, ASR6, ASR10
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3 times per day every
six days
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Throughout the
Northern Connection, toll plaza and tunnel buildings construction works
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24-hour TSP
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ASR1, ASR5, AQMS1, ASR6, ASR10
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Daily every six days
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Special
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1-hour TSP
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ASR1, ASR5, AQMS1, ASR6, ASR10
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3 times per day every
three days
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Northern Connection
During excavation
works for launching shaft, excavation work for Cut and Cover Tunnel and Cut
and Cover Tunnel Construction
Toll Plaza
During excavation,
slope works, construction of road and superstructures and wind erosion from
open sites and stockpiling areas
Tunnel Buildings
During excavation,
foundation works, construction of superstructures and wind erosion from open
sites and stockpiling areas
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24-hour TSP
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ASR1, ASR5, AQMS1, ASR6, ASR10
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Daily every three days
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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.
3.5.2
The filter paper of 24-hour TSP measurement
shall be determined by HOKLAS accredited laboratory. A high volume sampler in
compliance with the following specifications shall be used for carrying out the
1-hr and 24-hr TSP monitoring:
(i)
0.6-1.7 m3/min (20-60
SCFM) adjustable flow range;
(ii)
equipped with a
timing/control device with +/- 5 minutes accuracy for 24 hours operation;
(iii)
installed with
elapsed-time meter with +/- 2 minutes accuracy for 24 hours operation;
(iv)
capable of providing a
minimum exposed area of 406 cm2 (63 in2);
(v)
flow control accuracy:
+/- 2.5% deviation over 24-hr sampling period;
(vi)
equipped with a shelter
to protect the filter and sampler;
(vii) incorporated with an electronic mass flow rate controller or other
equivalent devices;
(viii) equipped with a flow recorder for continuous monitoring;
(ix)
provided with a peaked
roof inlet;
(x)
equipped with a
manometer;
(xi)
able to hold and seal
the filter paper to the sampler housing in a horizontal position;
(xii) easy to change the filter; and
(xiii) capable of operating
continuously for 24-hr period.
3.5.3
Calibration of dust monitoring equipment
shall be conducted by the ET upon installation and in bi-monthly intervals
during construction phase. The
transfer standard shall be traceable to the internationally recognized primary
standard and be calibrated annually. The calibration data shall be properly
documented for future reference by concerned parties, such as the IEC. All the
data shall be converted into standard temperature and pressure condition.
3.5.4
The filter paper of 24-hour TSP measurement
shall be determined by HOKLAS accredited laboratory.
3.5.5
If the ET proposes to use a direct reading
dust meter to measure 1-hr TSP levels on an ad hoc basis, he shall submit
sufficient information to the IEC to prove that the instrument is capable of
achieving a comparable result as that the High Volume Sampler (HVS) and may be
used for the 1-hr sampling. The
instrument should also be calibrated regularly and the 1-hr sampling shall be
checked periodically by the HVS to check the validity and accuracy of the
results measured by the direct reading method.
3.5.6
According to the Project 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:
(i)
the wind sensors should
be installed on masts at an elevated level 10 m above ground so that they are
clear of obstructions or turbulence caused by the buildings;
(ii)
the wind data should be
captured by a data logger to be down-loaded for processing at least once a
month;
(iii)
the wind data monitoring
equipment should be re-calibrated at least once every six months; and
(iv)
wind direction should be
divided into 16 sectors of 22.5 degrees each.
3.6.1
The baseline monitoring results formed the
basis for determining the air quality criteria for the impact monitoring. The
ET shall compare the impact monitoring results with air quality criteria set up
for 24-hour TSP and 1-hour TSP.
Based on results of the approved Baseline Monitoring Report of HyD Contract HY/2012/08, the Action and Limit Levels for
impact dust monitoring are shown in Tables 3-3.
Table 3-3 Action and Limit Levels for Impact Air
Quality Monitoring
|
Air Quality Monitoring Stations
|
24-hour TSP (μg/m3)
|
1-hour TSP (μg/m3)
|
|
Action Level
|
Limit Level
|
Action Level
|
Limit Level
|
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ASR1
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213
|
260
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331
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500
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ASR5
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238
|
260
|
340
|
500
|
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AQMS1
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213
|
260
|
335
|
500
|
|
ASR6
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238
|
260
|
338
|
500
|
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ASR10
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214
|
260
|
337
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500
|
3.6.2
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 F.
Noise
3.7.1
The TM-CLKL EIA study stated that no existing
noise sensitive receiver (NSR) was identified within the Study Area at Tuen
Mun. Therefore, no noise monitoring
is required for the construction phase of the Contract.
3.7.2
Regular site inspections and audits will be
carried out during the construction phase in order to confirm the construction
works under the Contract comply with the regulatory noise requirements.
Water Quality
3.7.3
No marine works will be undertaken under the Contract. Therefore, no water quality monitoring
is required for the construction phase of the Contract.
Ecology
3.7.4
No marine works will be undertaken under the Contract
and generated marine ecological impact, no dolphin monitoring is required for
the construction phase of the Contract.
3.7.5
During construction phase, the ET will
perform Pitcher Plants inspection at least once every week to report the growth
condition and protection measures.
Landscape and Visual
3.7.6
Measures to mitigate landscape and visual impact
during construction should be checked and monitored by a Registered Landscape
Architect to ensure compliance with the intended aims of the mitigation
measures in accordance with the EM&A Manual.
Cultural Heritage
3.7.7
Grave G1 as a heritage resource is situated
near the proposed toll plaza in Tuen Mun.
Site inspections should be undertaken at least once per week throughout
the construction period to ensure compliance with the intended aims of recommended
mitigation measures.
Landfill Gas
3.7.8
During EIA study, landfill gas hazards are likely
to be generated from the Pillar Point Valley (PPV) Landfill. Landfill gas monitoring is recommended
during construction of the Contract to ensure the works area is free of
landfill gas before the worker entered the concerned area.
4.1.1
The air quality impact monitoring and enhanced
Total Suspended Particulates (TSP) level monitoring at five proposed locations
are currently carried out by the ET of Contract HY/2012/08. Sharing of impact air quality monitoring
data between HY/2012/08 and HY/2013/12 is agreed by all relevant parties. The Contract is not required to conduct
its own dust monitoring exercise until the Contract HY/2012/08 ends.
4.2.1
In the Reporting Period, 1- hour and
24-hour TSP monitoring at the five proposed locations are continued to perform by
the ET of Contract HY/2012/08. Therefore,
no air quality monitoring was conducted by the ET of Contract HY/2013/12. Details information of air quality
monitoring results could be referred to the Monthly EM&A Reports of the
Contract HY /2012 /08 (February 2015, March 2015 and April 2015).
4.3.1
According to the air quality monitoring
result provided by Contract HY/2012/08, no exceedances in 1-hour and 24-hour
TSP were recorded in the Reporting Period.
No Notification on Exceedances (NOEs) was issued by the ET of Contract
HY/2012/08. The summary of air
quality exceedance in the Reporting Period is shown in Table 4-1.
Table 4-1 Summary of Air Quality Monitoring Exceedance
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Date of Exceedance
|
Monitoring Station
|
Air Quality Parameter
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Result
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Exceed
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NA
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NA
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NA
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--
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--
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4.4.1
No investigation for
exceedance is required for the Reporting Period.
5.1.1
According to the EM&A Manual
requirements, regularly
inspection for Pitcher Plants at least once every week to report it growth and protection
measure
situation shall be conducted during construction period.
5.2.1
In the Reporting Period, inspections for
implementation status of mitigation measures for the Pitcher Plants were
carried out by the ET on 3rd,
10th, 17th and 24th February 2015, 3rd,
10th, 17th , 24th and 31st March
2015, 8th, 14th, 21st and 28th
April 2015. Trial
transplantation of pitcher plant from the nursery site to final receptor site
was carried out on 15 April 2015 and a total of 5% of pitcher plant was transplanted.
5.2.2
During weekly site inspection, the
transplanted Pitcher Plants at the nursery
zone were
overall in fair to poor condition. The scaffold structure and chain link fence of
protection were implemented properly, no repair or maintenance was
required. Moreover, no construction
activities were conducted nearby the nursery zone.
5.2.3
Random checking was undertaken for the
protected areas Zones 8, 9 and 10 during weekly site inspection. During each occasion of site inspection,
no construction activities were found to be conducted nearby the protected
areas of Pitcher Plants. The chain link fence provided at the
protected areas was properly erected.
The growths of Pitcher Plants as retained at the protected areas were in fair to poor condition.
6.1.1
According to the EM&A Manual
requirements, regular inspection for heritage resource, Grave G1, shall be
audited by the ET at least once every week to ensure recommended mitigation
measures implemented during construction period. The aim of the survey is to
prevent any possible damage to the grave and to ensure the proposed mitigation
measures are implemented. The broad
scope of the audit will involve supervision of the following:
Ÿ
Non-contact effects of
the engineering works, such as vibration from pneumatic drills which could case damage, such as foundation or wall cracks and
loosening of tiles or fixtures; and
Ÿ
Contact between the
historic structures and equipment and materials associated with the engineering
works.
6.1.2
Specifically, the monitoring programme
will entail the following tasks:
Ÿ
The extent of the agreed
works areas should be regularly checked during the construction phase to ensure
the buffer is being maintained; and
Ÿ
Ensure no stockpiling or
equipment storage is affecting the structure.
6.1.3
In the event of non-compliance the
responsibilities of the relevant parties is detailed in the Event/ Action Plan
in Appendix F.
6.2.1
In the Reporting Period, site inspection for
the Grave G1 was undertaken on 3rd,
10th, 17th and 24th February 2015, 3rd,
10th, 17th, 24th and 31st
March 2015, 8th, 14th,
21st and 28th April 2015. During site inspection, buffer zone
between the working area and the Grave was maintained and no
construction material or equipment was stored nearby the Grave.
6.2.2
Mitigation measures undertaken by the
Contractor has fully implemented the EM&A Manual requirements.
7
Landscpae and Visual
7.1.1
According to EM&A Manual requirements,
monitoring of Contractor’s operations during construction period to report on
Contractor’s compliance should be carried out on weekly basis. Measure to mitigate landscape and visual
impact during construction should be checked and monitored by a Registered
Landscape Architect to ensure compliance with the intended aims of the
mitigation measures. Moreover, the
progress of the engineering works shall be regularly reviewed on site to
identify the earliest practical opportunities for the landscape works to be
undertaken.
7.2.1
In the Reporting Period, site inspection for
landscape and visual mitigation measures was undertaken by the Registered
Landscape Architect on 6th, 13th, 17th
and 27th February 2015, 6th, 13th,
20th and 27th March 2015, 2nd, 10th, 17th,
24th and 30th April 2015.
7.2.2
Most of the landscape works such as planting
was not yet commenced. The detailed
inspection checklists can be referred to the Monthly EM&A Reports
(February 2015, March 2015and April 2015) of the contract.
8.1 General
8.1.1
During EIA study, landfill gas hazards are likely
to be generated from the Pillar Point Valley (PPV) Landfill. Hence, regular
landfill gas monitoring is recommended during construction of the proposed toll
plaza.
8.1.2
During construction, a Safety Officer should
be appointed to carry out the monitoring works. The monitoring frequency and
areas to be monitored should be set down prior to commencement of ground-works
either by the Safety Officer or an approved and appropriated qualified person.
The routine monitoring should be carried out in all excavations, manholes,
chambers, relocation of monitoring wells and any other confined spaces that may
have been created. All measurements in excavations should be made with the
extended monitoring tube located not more than 10 mm from the exposed ground
surface. Monitoring should be performed properly to make sure that the area is
free of landfill gas before any man enters in the area.
8.1.3
For excavations deeper than 1m, measurements
should be carried out:
Ÿ
at the ground surface
before excavation commences;
Ÿ
immediately before any
worker enters the excavation;
Ÿ
at the beginning of each
working day for the entire period the excavation remains open; and
Ÿ
periodically through the working day whilst workers are in the excavation.
8.1.4
For excavations between 300mm and 1m deep,
measurements should be carried out:
Ÿ
directly after the
excavation has been completed; and
Ÿ
periodically whilst the
excavation remains open
8.1.5
For excavations less than 300mm deep,
monitoring may be omitted, at the discretion of the Safety Officer or other
appropriately qualified person.
8.1.6
To ensure the accuracy of the monitoring
data, zeroing of the gas analyser shall be undertaken
at the start of each day’s monitoring.
As part of the QA/QC, calibration of the gas analyser
shall be conducted at least once every two weeks according to the specification
of the manufacturer’s operation manual.
8.2.1
In the Reporting Period, landfill gas
monitoring was conducted at the construction of Retaining Wall B and Retaining
Wall F and the locations are illustrated in Appendix E. A BIOGAS 5000 gas
analysis was used for the landfill gas monitoring.
8.2.2
There were total 68 workings days monitoring were carried by the Safety Officer or
an approved and qualified persons in this reporting period. Table
8-1 is summarized landfill gas measurement results. Moreover, graphical plot are attached in
Appendix G.
Table 8-1 Summary
of Landfill Gas Measurement Results in Reporting Period
|
Landfill Gas Parameter
|
Action
Level
|
Limit
Level
|
Detectable at Retaining Wall B
|
Detectable at Retaining Wall F
|
|
Min
|
Max
|
Min
|
Max
|
|
Methane
|
>10% LEL (>0.5%
v/v)
|
>20% LEL (>1% v/v)
|
0%
|
0.2%
|
0%
|
0.2%
|
|
Oxygen
|
<19%
|
<18%
|
21.0%
|
21.2%
|
21.0%
|
21.2%
|
|
Carbon Dioxide
|
>0.5%
|
>1.5%
|
0%
|
0.2%
|
0%
|
0.2%
|
8.2.3
The measurement results shown that slightly
methane concentration was detected and all oxygen concentration were over 21.0% and Carbon Dioxide was between 0 and 0.2
%. No corrective action was
required accordingly.
9.1 General
Waste Management
9.1.1
Waste management was carried out by an on-site
Environmental Officer or an Environmental Supervisor from time to time.
9.2.1
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.
9.2.2
Whenever possible, materials were reused
on-site as far as practicable. The
quantities of waste for disposal in the Reporting Period are summarized in Tables
9-1 and 9-2 and the Waste Flow Table is presented in Appendix H.
Table 9-1 Summary
of Quantities of Inert C&D Materials
|
Type of Waste
|
Quantity
|
Disposal
Location
|
|
Feb 15
|
Mar 15
|
Apr 15
|
|
Reused in this
Project (Inert) (in '000 m3)
|
24.411
|
13.473
|
8.06
|
-
|
|
Reused in other
Projects (Inert) (in '000 m3)
|
25.313
|
26.648
|
11.209
|
HY/2012/08
|
|
Disposal as Public
Fill (Inert) (in '000 m3)
|
0.629
|
2.042
|
9.765
|
Tuen Mum Area 38
|
Table 9-2 Summary
of Quantities of C&D Wastes
|
Type of Waste
|
Quantity
|
Disposal Location
|
|
Feb 15
|
Mar 15
|
Apr 15
|
|
|
0
|
0
|
0
|
-
|
|
Recycled
Paper / Cardboard Packing (in '000kg)
|
0
|
0.05
|
0
|
-
|
|
Recycled
Plastic (in '000kg)
|
0
|
0
|
0
|
-
|
|
Chemical
Wastes (in '000kg)
|
0
|
0
|
0
|
-
|
|
General
Refuses (in '000m3)
|
0.01
|
0.01
|
0.003
|
WENT
|
9.2.3
To control the site performance on waste management, the
Contractor shall ensure that all solid and liquid waste management works are
fully in compliance with the relevant license/permit requirements, such as the
effluent discharge license and the chemical waste producer registration. The Contractor is also reminded to
implement the recommended environmental mitigation measures according to the Environmental Monitoring and Audit
Manual.
10.1 requirements
10.1.1
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.
10.1.2
During
the Reporting Period, 14
events of the joint site inspections were undertaken to evaluate the site
environmental performance. The
summaries of the findings during site inspection are presented in Tables
10-1 and 10-2.
Table
10-1 Site Observations for the Contract for
the Reporting Period
|
Date
|
Findings
/ Deficiencies
|
Follow-Up
Status
|
|
3 Feb 2015
|
Ÿ
Stockpile without cover was observed. Dust mitigation measures should be
applied to minimize dust generation.
|
Ÿ Stockpile without cover was
removed before site
inspection on 10 February 2015.
|
|
Ÿ General refuse scattered on site was
observed. The contractor was reminded to clean and provide more rubbish bin
on site.
|
Ÿ General refuse scattered on site
has cleared during site inspection on 10 February 2015.
|
|
Ÿ As a reminder, tree protection
zone should be set up for the retained tree on site to prevent cause any
damage due site activities.
|
Ÿ Not required for reminder.
|
|
10 Feb 2015
|
Ÿ General refuse placing outside
the waste skip was observed. The contractor was reminded all general refuse
should be disposal into proper containers to maintain the site clean and
tidy.
|
2.
General refuse as placed outside
the waste skip has been properly disposal.
|
|
Ÿ
The contractor was reminded that the sump pit should be regularly cleanup
to maintain the drainage system function properly.
|
Ÿ
Not
required for reminder.
|
|
Ÿ
Mitigation measures for dust and noise should be implemented for the
works area near Lung Mun Road to reduce public impact.
|
Ÿ Not required for reminder.
|
|
17 Feb 2015
|
Ÿ
Free standing chemical container without drip tray was observed. The contractor was reminded to provide
drip tray underneath.
|
Ÿ
The
free standing chemical container without drip tray has removed during site inspection on 24
February 2015.
|
|
Ÿ
During the dry season, dust mitigation measures should be implementated
to reduce dust impact.
|
Ÿ
Not
required for reminder.
|
|
24 Feb 2015
|
Ÿ As a reminder, dust mitigation measures should be implemented for
breaking/excaviting activities to reduce construction dust impact.
|
Ÿ Not required for reminder.
|
|
Ÿ As a reminder, stagnant water cumulated
inside the u-channel or gully should be
drained away to prevent mosquito breeding.
|
Ÿ Not required for reminder.
|
|
3 March 2015
|
Ÿ
Dusty haul road was observed near the retaining wall works area. The
contractor should provide water spraying at those area to minimize dust
generation and make sure the frequency of water spraying comply with the EP
requirement.
|
·
Water spraying of dust mitigation
measures has been provided and no dust emission observed was generated from
the vehicles passing through haul road.
|
|
Ÿ Ponding water cumulated in the
site was observed. To prevent mosquito breeding, the contractor was reminded
to cleanup.
|
Ÿ Ponding water has been removed
before site inspection on 10 March 2015.
|
|
Ÿ It was reminded that dust mitigation
measures should implement to reduce construction dust emission during rock
breaking and excavating activities at the dry season.
|
Ÿ Not required for reminder.
|
|
10 March 2015
|
Ÿ Drilling
work was observed to conduct near the public areas, extra barrier or hoarding
should be provided to reduce noise impact.
|
Ÿ
During site inspection on 17
March 2015, drill rig has relocated far from the public area. No any noisy construction activities
observed to conduct near the public area.
|
|
Ÿ Mud/soil trails were observed at
the site exit. The contractor should provide wheel washing facilities at all
construction site exit to make sure all the vehicles leaving from site is
clean.
|
Ÿ No mud/soil trails were observed
at the site exit during site inspection 17 March 2015. The deficiency has rectified.
|
|
Ÿ It was reminded that the
contractor should display all the EP and discharge license at all the site
entrance.
|
Ÿ Not required for reminder.
|
|
Ÿ As a reminder, dust mitigation
measures should be implemented to minimize dust impact as came form the dust
materials stockpile, haul roads and construction activities during the dry
and windy season
|
Ÿ Not required for reminder.
|
|
17 March 2015
|
Ÿ
No vaild EP and discharge license was displayed at the site entrance.
The contractor strongly reminded that the EP and all relevant licenses shall
display at site entrance.
|
Ÿ
Vaild EP and discharge license has displayed at site entrance
|
|
Ÿ
Stockpile without cover was observed. The contractor shall provide proper dust mitigation
measures to reduce dust generation.
|
Ÿ The stockpile has removed and no
dust generation was observed in this area during the inspection on 31 March
2015.
|
|
Ÿ Dust generation observed during
loading and unloading from truck. Water spraying shall be provide to reduce
dust generation.
|
Ÿ Dust generation during loading and unload
was not observed. Addition, Water spraying to reduce dust
generation from haul road was observed during site inspection 24 March 2015.
|
|
Ÿ Earth bund or temporary drainage
system is reminded installation to prevent the surface run-off damage the
nursery zone.
|
Ÿ Temporary barriers has provided
at the site boundary.
|
|
24 March 2015
|
Ÿ Muddy water observed near site
boundary. Temporary drain channel should be provide to divert the muddy
surface run-off to the de-silting facilities and prevent mosquito breeding
|
Ÿ Temporary barrier was provided at
the site boundary to prevent surface runoff flow out of site boundary.
|
|
Ÿ Oil drum without drip tray was
observed. The contractor should provide drip tray underneath.
|
Ÿ Underneath oil drum, drip tray
has provided to prevent land contamination.
|
|
Ÿ
It was reminded that stockpiles located within the site area should
provide proper dust mitigation measures to prevent dust generation.
|
Ÿ Not required for reminder.
|
|
31 March 2015
|
Ÿ No environmental issue was
observed during the site inspection
|
Ÿ NA
|
|
8 April 2015
|
Ÿ
Oil leakage from backhoe was observed. The contractor should clean up
the contaminate area and provide maintenance to the plant to prevent further
leakage
|
·
The leakage excavator has been
fixed and no leakage observed from the excavator or the other plants
|
|
Ÿ Chemical containers without drip
tray was observed. The contractor should provide drip tray underneath.
|
Ÿ Chemical containers without drip
tray was removed.
|
|
Ÿ Broken tarpaulin covered on the stockpile was observed. The contractor
was reminded to replace the broken tarpaulin sheets to minimize dust
generation
|
Ÿ Not required for reminder.
|
|
14 April 2015
|
Ÿ Chemical containers without drip
tray was observed. The contractor should provide drip tray underneath.
|
·
Chemical containers without drip
tray was removed
|
|
Ÿ
Turbidity water discharged from site was observed. The contractor should
treat the water before discharge from site.
|
Ÿ No turbidity water discharged
from site was observed.
|
|
Ÿ
To remind that Stagnant water cumulated on site should be cleanup to
prevent mosquito breeding.
|
Ÿ Not required for reminder.
|
|
Ÿ To remind that The updated EP and
license should be display at all site entrance.
|
Ÿ Not required for reminder.
|
|
21 April 2015
|
Ÿ
The traces of soil and mud were observed at the site exit near
Firestation. The contractor was requested to clean to maintain the site exit
clean and tidy.
|
·
All the site exits has been
cleaned regularly. No soil and mud traces were observed at site exits.
|
|
Ÿ At Portion X-2, earth bund with
tarpaulin should be provide for the stockpile prevent soil loss to clog up
nearby gully.
|
Ÿ Tarpaulin was provided for stockpiles
which located on site.
|
|
28 April 2015
|
Ÿ Diesel oil drums underneath
without drip tray were observed at the work platform +23mPD. The contractor
should provide drip tray to prevent land contamination.
|
·
A drip tray has provided underneath the diesel oil drums.
|
|
Ÿ Dust emission observed from the
breaking and drilling work. The contractor should provide mitigation measures
to reduce dust generation.
|
Ÿ Water spray of dust mitigation measures has provided during the breaking and drilling work
|
|
Ÿ Stockpile without cover was
observed. The contractor should provide mitigation measures to reduce dust
impact.
|
Ÿ Tarpaulin was provided for
stockpiles which located on site.
|
Table 10-2 Summary of Reminders/Observations
of Site Inspection
|
Reporting Period
|
Date of site inspection
|
Nos. of findings / reminders
|
Follow-Up Status
|
|
February 2015
|
3rd, 10th, 17th,
and 24th February 2015
|
10
|
Completed
|
|
March 2015
|
3rd,
10th, 17th, 24th and 31st March
2015
|
14
|
Completed
|
|
April 2015
|
8th, 14th, 21st and 28th
April 2015
|
12
|
Completed
|
10.1.3
In the
Reporting Period, no non-compliance was recorded,
however, 36 observations/ reminders were
recorded during the site inspections.
Minor deficiencies found
in the weekly site inspection were in general rectified within the specified deadlines. The environmental performance of the
Project was therefore considered satisfactory.
10.1.4
In the upcoming wet
season, muddy water or other water pollutants from site
surface runoff into the public areas will be key environment issue. Water
quality mitigation measures to prevent surface runoff into public areas should
be paid on special attention.
10.1.5
For waste management, good practice for daily
housekeeping is reminded. Furthermore, clean-up frequency of the waste skips
and wastewater treatment system should be increased to ensure these facilities
functional and effective.
11.1
Environmental Complaint, Summons and Prosecution
11.1.1 For the
Contract, no environmental complaint, summons and prosecution were received in
the Reporting Period. Moreover, no
exceedances of the environmental performance limit (Action and Limit Level)
were recorded. The statistical
summary table of environmental exceedance, complaint, summons and prosecution
is presented in Tables 11-1, 11-2, 11-3 and 11-4.
Table 11-1 Statistical
Summary of Environmental Exceedance
|
Reporting Period
|
Environmental Aspect / Parameter
|
Environmental Performance
|
Event
Exceedance
|
|
Reporting
Period
|
Previous
Periods
|
Cumulative
|
|
1 February
2015 –
30 April 2015
|
Air Quality - 1-hr TSP
|
Action Level
|
0
|
4
|
4
|
|
Limit Level
|
0
|
0
|
0
|
|
Air Quality - 24-hr
TSP
|
Action Level
|
0
|
0
|
0
|
|
Limit Level
|
0
|
0
|
0
|
Table
11-2 Statistical
Summary of Environmental Complaints
|
Reporting Period
|
Environmental Complaint Statistics
|
|
Frequency
|
Cumulative
|
Complaint Nature
|
|
23 October 2014 –
31 January 2015
|
0
|
0
|
NA
|
|
1 February
2015 –
30 April 2015
|
0
|
0
|
NA
|
Table
11-3 Statistical
Summary of Environmental Summons
|
Reporting Period
|
Environmental Complaint Statistics
|
|
Frequency
|
Cumulative
|
Complaint Nature
|
|
23 October 2014 –
31 January 2015
|
0
|
0
|
NA
|
|
1 February
2015 –
30 April 2015
|
0
|
0
|
NA
|
Table
11-4 Statistical
Summary of Environmental Prosecution
|
Reporting Period
|
Environmental Complaint Statistics
|
|
Frequency
|
Cumulative
|
Complaint Nature
|
|
23 October 2014 –
31 January 2015
|
0
|
0
|
NA
|
|
1 February
2015 –
30 April 2015
|
0
|
0
|
NA
|
11.1.2
In the Reporting Period, no warning letter related to environmental issue was received from the EPD
or CEDD.
12.1 General
Requirements
12.1.1
The environmental mitigation measures that
recommended in the Environmental Mitigation and Enhancement Measures
Implementation Schedule (EMIS) for in the Project EM&A Manual covered the
issues of air quality, cultural heritage, ecology, landfill gas hazard, landscape & visual,
noise, water and waste. The
updated EMIS for the Contract is shown in Appendix I.
12.1.2
The Contractor shall implement the required
environmental mitigation measures according to the EM&A Manual as subject
to the site condition. The environmental mitigation measures implemented by the
Contract in this Reporting Period are summarized in Table 12-1 and Appendix I.
Table 12-1 Environmental
Mitigation Measures
|
Issues
|
Environmental Mitigation Measures
|
|
Air Quality
|
· Maintain damp / wet surface
on access road
· Keep slow speed in the sites
· All vehicles must use wheel
washing facility before off site
· Sprayed water during rock
breaking works
· During transportation by truck, materials loaded lower
than the side and tail boards, and covered before transport
· Compacted all soil stockpiles
· Part of the exposed slopes covered geotextile net
|
|
Cultural Heritage
|
· Set a buffer zone between the working area
and the Grave
· All construction materials and equipment store far from
the Grave
· Inspection the Grave to ensure provision mitigation
measures effective
|
|
Ecology
|
·
Wire fencing provided
for temporary protect Pitcher Plants
·
Undertake weekly
inspection of Pitcher Plants
|
|
Landfill Gas Hazard
|
·
Landfill Gas
measurement undertake during trench excavation
|
|
Water Quality
|
· Temporary drainage system
provide for surface runoff prevent discharge to public area
· Wastewater to be treated by
sedimentation tank before discharge.
|
|
Noise
|
· Restrain operation time of
plants from 07:00 to 19:00 on any working day except for Public Holiday and
Sunday.
· Keep good maintenance of
plants
· The noisy plants or works
provide mobile noise barriers
· Shut down the plants when
not in used
|
|
Waste and Chemical
Management
|
· On-site sorting prior to
disposal
· Follow requirements and
procedures of the “Trip-ticket System”
·
Predict required quantity of concrete accurately
· Collect the unused fresh concrete at designated
locations in the sites for subsequent disposal
|
|
General
|
· The site was generally kept
tidy and clean.
|
13.1 Conclusions
13.1.1 This is 2nd Quarterly EM&A
report presenting the monitoring results and inspection findings for the
Reporting Period from 1 February 2015 to 30 April 2015.
13.1.2 No air
quality monitoring including 1-hour and 24-hour TSP exceedance was recorded in
the Reporting Period. Although air quality monitoring result complied with the performance
criteria, the Contractor was reminded to fully implement the dust control
measures.
13.1.3 In this
Reporting Period, no noise complaint was
received by RE, the Contractor, ENPO or HyD. No Action Level exceedances were triggered and no NOE or the associated corrective actions were therefore issued.
13.1.4 Site
inspection for landscape and visual was conducted on weekly basis by the
Landscape Architect to ensure if the existing condition compliance with the
intended aims of the mitigation measures.
Most of the landscape works such as planting was not yet commenced.
13.1.5 Site
inspection was performed for the transplanted Pitcher Plants in the nursery
site and protected Zones 8 to 10.
The transplanted Pitcher Plant in nursery site was protected by the
scaffold structure which surrounded by chain link fencing and the protected
Pitcher Plants in Zones 8 to 10 were fenced off by chain link fencing. The condition of the transplanted
pitcher plant was in fair to poor condition. No construction activities were found to
conduct nearby the nursery site and protection zones.
13.1.6 Moreover, trial transplantation of pitcher plant from the nursery site
to final receptor site was carried out on 15 April 2015 and a total of 5% of
pitcher plant was transplanted. The
condition of the transplanted pitcher plant will be kept in view.
13.1.7 Landfill
gas monitoring was conducted at the construction of Retaining Wall B and
Retaining Wall F by the Safety Officer.
The monitoring results shown no exceedances were triggered.
13.1.8
No documented a complaint, notification of
summons or successful prosecution is received by the Contract.
13.1.9
During
the Reporting Period, 13
events of the joint site inspections were undertaken to evaluate the site
environmental performance. No adverse environmental impacts were
observed during the weekly site inspection and environmental audit of the
Reporting Period, indicating the implemented mitigation measures for air
quality, construction noise and water quality were effective. Minor deficiencies found in the weekly
site inspection were in general rectified within the specified deadlines. The environmental performance of the
Project was therefore considered satisfactory.
13.1.10No documented a
complaint, notification of summons or successful prosecution is received by the
Contract.
13.2.1
During wet season, muddy water or other water pollutants from site surface runoff into the
public areas will be key environment issue. Water
quality mitigation measures prevent surface runoff into the public areas should
be paid on special attention.
13.2.2
Furthermore, air quality
mitigation measures such as watering of site area for 12 times per day and
covering of exposed slopes should be implemented to reduce construction dust
impact as recommended in the EMIS.
13.2.3 Moreover, good practice for daily housekeeping is reminded. Addition,
clean-up frequency of the waste skips and wastewater treatment system should be
increased to ensure these facilities functional and effective.