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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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22nd Quarterly
Environmental Monitoring & Audit Summary Report –
(February to April
2020)
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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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17
July 2020
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TCS00715/14/600/R0667v2
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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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Executive
Summary
ES.01.
This is the 22nd Quarterly EM&A Summary Report
for the “Tuen Mun - Chek Lap Kok Link - Northern Connection Toll Plaza and Associated
Works” under
Environmental Permit No. EP-354/2009/D (hereinafter ‘‘the EP’’), covering the period from 1
February to 30 April
2020 (hereinafter “Reporting Period”).
Environmental
Monitoring and Audit Activities
ES.02.
Environmental monitoring activities under the
EM&A programme in the Reporting Period are summarized
in the following table.
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Environmental Aspect
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Environmental
Monitoring Parameters / Inspection
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Total Occasions
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Air Quality
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1-hour Total Suspended Particulates (TSP)
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450
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24-hour TSP
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150
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Cultural heritage inspection
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Grave G1
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12
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Landfill Gas Monitoring
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Oxygen; Methane & Carbon Dioxide
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Nil
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Landscape &Visual
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Landscape
&Visual Monitoring
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11
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Joint Site Inspection / Audit
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IEC, ET, the Contractor and RE joint site Environmental Inspection and Auditing
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12
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Breaches of Action/Limit levels
ES.03. In the
Reporting Period, 1 Action Level exceedance
of 1-hour TSP was recorded at ASR5 on 12 March 2020; 3 Action Level exceedances of 1-hour TSP were recorded at ASR1 and ASR5 on 8 April
2020 respectively; 1 Limit Level exceedance of 1-hour TSP was recorded at ASR1 on 14 April 2020 according
to the measurement results by the ET of Contract HY/2012/08, investigation reports for the exceedances have been completed and the corresponding investigation reports have
been submitted to all relevant parties.
The summary of breach of air quality performance is shown below. The summary of breach of air quality and landfill gas monitoring is shown
below.
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Environmental
Aspect
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Monitoring Parameters
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Action Level
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Limit Level
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Event & Action
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NOE Issued
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Investigation
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Corrective Actions
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Air Quality
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1-hour TSP
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4
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1
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3
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3
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0
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24-hour TSP
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0
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0
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0
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0
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0
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Landfill Gas
Monitoring
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Oxygen
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0
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0
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0
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0
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0
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Methane
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0
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0
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0
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0
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0
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Carbon
Dioxide
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0
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0
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0
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0
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0
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ES.04. In the
Reporting Period, no noise complaint was received by RE, the Contractor, ENPO
or HyD.
No Action Level exceedances were therefore triggered and no NOE or the
associated corrective actions were required.
Environmental
Complaint
ES.05.
In the Reporting Period,
no environmental complaint was received.
Notification of Summons and
Successful Prosecutions
ES.06. No
environmental summons or successful prosecutions were recorded in the Reporting
Period.
Reporting Changes
ES.07. No
reporting changes were made in the Reporting Period.
Future key issues
ES.08. As wet season is approaching, muddy water or other water
pollutants from site surface runoff into the public areas will be key
environment issue. Special
attention should be paid on the water quality mitigation measures to prevent
surface runoff flow to public area.
ES.09. Moreover, air quality mitigation measures such as
watering of site area for at least 12 times per day and covering
of exposed slopes should be fully implemented to reduce construction dust
impact as recommended in the EMIS.
ES.10. It was
reminded that good housekeeping practice should be maintained. Mosquito control measures should be
properly implemented to prevent mosquito breeding on site especially after rain.
Table of Contents
1. Introduction 1
1.1. Project Background 1
1.2 Report Structure 1
2 Contract Organization and Construction
progress 2
2.1 Contract Organization 2
2.2 Construction Progress 2
2.3 Summary of Environmental Submissions 2
3 Summary of Impact monitoring
Requirements 4
3.1 General 4
3.2 Air Quality Monitoring 4
3.3 Monitoring Locations 4
3.4 Monitoring Frequency 4
3.5 Monitoring Equipment 5
3.6 Derivation of Action/Limit (A/L)
Levels 6
3.7 Other Environmental Aspects 6
4 Air Quality Monitoring 8
4.1 General 8
4.2 Summary of Monitoring Results 8
4.3 Action and Limit (A/L) Levels
Exceedance 8
4.4 Air Quality Exceedance Investigation 8
5 Ecology Monitoring 9
5.1 General 9
5.2 Pitcher Plants Inspection 9
6 CULTURAL HERITAGE 10
6.1 General 10
6.2 Grave Inspection 10
7 Landscpae and Visual 11
7.1 General 11
7.2 Landscape and Visual Inspection 11
8 Landfill Gas Hazard Monitoring 12
8.1 General 12
8.2 Landfill Gas Monitoring Result 13
9 Waste Management 14
9.1 General Waste Management 14
9.2 Records of Waste Quantities 14
10 Site Inspections 15
10.1 requirements 15
11 Environmental Complaint and
Non-compliance 17
11.1 Environmental Complaint, Summons and
Prosecution 17
12 Implementation Status of Mitigation
Measures 18
12.1 General Requirements 18
13 Conclusions and Recommendations 19
13.1 Conclusions 19
13.2 Recommendations 20
List of tables
Table 2-1 Status of
Environmental Licenses and Permits of the Contracts
Table 3-1 Air Quality
Monitoring Stations under the Contract
Table 3-2 Enhanced TSP
Monitoring Plan – Construction Phase
Table 3-3 Action and Limit
Levels for Impact Air Quality Monitoring
Table 4-1 Summary of Air
Quality Monitoring Exceedance
Table 8-1 Summary of Landfill
Gas Monitoring Zone
Table 9-1 Summary of
Quantities of Inert C&D Materials
Table 9-2 Summary of
Quantities of C&D Wastes
Table 10-1 Site Observations for the Contract
for the Reporting Period
Table 10-2 Summary of Reminders/Observations
of Site Inspection
Table 11-1 Statistical Summary of
Environmental Exceedance
Table 11-2 Statistical Summary of
Environmental Complaints
Table 11-3 Statistical Summary of
Environmental Summons
Table 11-4 Statistical Summary of
Environmental Prosecution
Table 12-1 Environmental Mitigation
Measures
List of Annexes
Appendix
A Layout plan of the Project
Appendix
B Layout plan of the Contract
Appendix C Environmental Management Organization
Chart
Appendix D Construction Programme
Appendix E Monitoring Locations / Sensitive
Receivers for the Contract
Appendix F Event and Action Plan
Appendix G
Landfill Gas Monitoring Graphical Plots
Appendix H
Waste Flow Table
Appendix I Implementation Schedule for
Environmental Mitigation Measures
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). The TM-CLK Link
Project is a designated project under Environmental Permit number EP-354/2009/D issued on 13 March 2015. 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 22nd Quarterly EM&A Summary
Report covering the period from 1 February to 30 April 2020.
1.2.1
The Quarterly 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 three-month rolling programme is enclosed in Appendix D.
February 2020
Ÿ
Instrumentation and Monitoring;
Ÿ
E & M Works at Retaining Wall B;
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Road and Drainage Works at LMR and Butterfly Beach;
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Landscape planting works on slopes, Lung Mun Road and Butterfly Beach;
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Finishing work at Footbridge;
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Modification of Toll booth Canopy.
March 2020
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E & M Works at Retaining Wall B;
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Road and Drainage Works at LMR and Butterfly Beach;
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Landscape planting works on slopes, Lung Mun Road and Butterfly Beach;
Ÿ
Finishing work at Footbridge;
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Modification of Toll booth Canopy.
April 2020
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E & M Works at Retaining Wall B;
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Road and Drainage Works at LMR and Butterfly Beach;
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Landscape planting works on slopes, Lung Mun Road and Butterfly Beach;
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Finishing work at Footbridge;
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Modification of Toll booth Canopy.
2.3 Summary of Environmental Submissions
2.3.1
According to the EP,
the required documents had been submitted to EPD for retention and are listed
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 Contract No. HY/2013/12 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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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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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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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 -Variation of
Effluent Discharge License
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WT00034613-2019
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29-08-2019
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30-09-2024
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4
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Waste Disposal Regulation - Billing Account for
Disposal of Construction Waste
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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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CNP for Multiple Task
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GW-RW0555-19
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25-11-2019
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23-05-2020
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6
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CNP for Portion H
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GW-RW0556-19
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25-11-2019
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17-05-2020
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7
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CNP for Lung Mun Road
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GW-RW0004-20
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09-01-2020
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14-03-2020
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GW-RW0123-20
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27-03-2020
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14-05-2020
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8
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CNP for Lung Fu Road
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GW-RW0005-20
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10-01-2020
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26-03-2020
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GW-RW0130-20
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08-04-2020
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24-06-2020
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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 air quality monitoring
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
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 1-hour TSP and 24-hour TSP measurement shall be determined
by HOKLAS accredited laboratory.
3.5.5
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 Leader 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 Table 3-3.
Table 3-3 Action and Limit Levels for Impact Air
Quality Monitoring
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Air Quality Monitoring Stations
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24-hour TSP (μg/m3)
|
1-hour TSP (μg/m3)
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Action Level
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Limit Level
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Action Level
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Limit Level
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ASR1
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213
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260
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331
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500
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ASR5
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238
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260
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340
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500
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AQMS1
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213
|
260
|
335
|
500
|
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ASR6
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238
|
260
|
338
|
500
|
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ASR10
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214
|
260
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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 (only undertaken at Establishment period) 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 2020, March 2020 and April 2020).
4.3.1
According to the air quality monitoring
result provided by Contract HY/2012/08, 1 Action Level exceedance of 1-hour TSP was recorded at ASR5 on 12 March 2020; 3
Action Level exceedances of 1-hour TSP were recorded at ASR1 and ASR5 on 8 April 2020 respectively;
1 Limit Level exceedance of 1-hour TSP was recorded at ASR1 on 14 April 2020.
Notification
of Exceedances (NOEs) were issued after receiving
the monitoring result from the 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
|
Date of Exceedance
|
Monitoring Station
|
Air Quality Parameter
|
Result
|
Exceed
|
|
12 March 2020
|
ASR5
|
1Hr TSP
|
356 µg/m3
|
Action Level
|
|
8 April 2020
|
ASR1
|
1Hr TSP
|
357 µg/m3
|
Action Level
|
|
8 April 2020
|
ASR1
|
1Hr TSP
|
457 µg/m3
|
Action Level
|
|
8 April 2020
|
ASR5
|
1Hr TSP
|
384 µg/m3
|
Action Level
|
|
14 April 2020
|
ASR1
|
1Hr TSP
|
673 µg/m3
|
Limit Level
|
4.4 Air
Quality Exceedance Investigation
4.4.1
Investigation for the 1-hour TSP exceedances were undertaken upon
received the monitoring results by
the ET of the Contract HY/2012/08.
4.4.2
For the exceednances in this reporting period,
the investigation reports were submitted to all relevant parties and concluded
that those exceedances are unlikely related to the Contract work and no
corrective action was required accordingly. The detailed investigation reports
and findings can be referred to the Monthly EM&A Reports (March 2020 and April 2020) of the
contract.
5.1.1
According to the EM&A Manual
requirements, regularly inspection for Pitcher Plants shall be conducted at
least once every week to report the protection measure of the Pitcher Plants during
construction period.
5.2.1
Total 181 pitcher plants were transplanted to
final receptor site and the rest of the Pitcher Plant individuals (certified
dead by the specialist) were not transplanted and were treated as general
refuse. All the transplantation of pitcher plant from the nursery site to final
receptor site was completed on 10th September 2015.
5.2.2
In the Reporting Period, inspections for
implementation status of mitigation measures for the Pitcher Plants were
carried out by the ET on 4th, 21st, 25th February 2020, 3rd, 10th, 17th, 24th and 31st
March 2020, 7th, 14th, 21st and 28th April
2020. 1 inspection for the mitigation measures implementation status of the
Pitcher Plant at the final receptor area on 11th February 2020 had been ceased due to the outbreak of
coronavirus disease (COVID-19) at nearby Contract HY/2012/08,
the site had been closed between 6 and 19 February 2020.
5.2.3
Establishment period for the pitcher plants
was completed at the end of September 2016, the join site completion of Establishment
period visit with AFCD was undertaken on 23 September 2016 and the final
pitcher plants report was submitted to AFCD on early December 2016. Therefore after 23 September
2016, only the integrity of the protection fence was checked to fulfill the EIA
requirement. During each inspection, the protection mitigation measures were
checking at the final receptor area to make sure no site activities was
undertaken inside the protection zone. Besides, no construction activities were
observed to be carried out at the surrounding of the final receptor area. The condition of chain link fence is
good and no repair or maintenance is required.
5.2.4
No matters the
completion of Establishment period, the Contractor should properly maintain the
fencing along the receptor area to avoid disturbance to the pitcher plants
under the EIA requirement.
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 cause
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 4th, 21st, 25th February 2020, 3rd, 10th, 17th, 24th and 31st
March 2020, 7th, 14th, 21st and 28th April
2020. During
these inspections, buffer zone was maintained between the working area and the
Grave. The nearby areas were clean,
and no construction materials or mechanical equipment were stored within or
close to the buffer zone. Moreover protective
measures (hoarding and scaffold with protective net above the grave) was
provided for constructing Toll Plaza Decking TD2 deck structure. 1 inspection
for the grave inspection on 11th February 2020 had been
ceased due to the outbreak of coronavirus disease (COVID-19) at nearby Contract
HY/2012/08, the site had been closed between 6 and 19
February 2020.
6.2.2
Accordingly, the Contractor has had fully
implemented cultural heritage mitigation measures in accordance with 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 21st, 28th February 2020, 6th, 13th, 20th,
27th March 2020, 3rd, 9th,
17th, 24th and 29th April 2020. 2 site inspections for landscape and visual
mitigation measures on 7th & 14th February
2020 had been ceased due to the outbreak of coronavirus disease (COVID-19)
at nearby Contract HY/2012/08, the site had been
closed between 6 and 19 February 2020.
7.2.2
Landscape works
such as slope planting was commenced and some transplanting works was commenced
on 22 May 2017. The
detailed inspection checklists can be referred
to the Monthly EM&A Reports (February 2020, March 2020 and April 2020) 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 advised by the SO, the gas analyser would
be optimally calibrated by the self-test function to provide the most accurate
result. The gas analyser
is calibrated and certified by a laboratory accredited under HOKLAS or any
other international accreditation scheme at yearly basis.
8.1.7
The landfill consultation zone was divided
into 6 monitoring zones. The landfill gas monitoring zones are summarized in Table
8-1. Moreover part of
landfill gas monitoring zone at TD1 was handover to the Contract No. HY/2017/10
since 7 May 2018. The layout plan for the monitoring zone is illustrated in Appendix E.
Table 8-1 Landfill
Gas Monitoring Zone
|
ID
|
Location
|
Excavation >300mm deep
undertaken in this reporting period
|
|
TD1
|
TD1, Retaining Wall A, Grave
G1 and Subway
|
No
|
|
RW-B
|
Retaining Wall B
|
No
|
|
RW-F
|
Retaining Wall F
|
No
|
|
S&U
|
Slope and Underpass
|
No
|
|
BW
|
Bridge Works (G2, H1)
|
No
|
|
LMR
|
Lung Mun Road
|
No
|
8.2.1
In the Reporting Period, no landfill gas monitoring was
conducted at the consultation zone.
8.2.2
The excavation
works within the landfill consultation zone was temporarily completed on 25 September 2019. Therefore, the landfill
gas monitoring will be temporarily suspended until the excavation works within
the consultation zone resume.
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 20
|
Mar 20
|
Apr 20
|
|
Reused in this Contract (Inert) (in '000 m3)
|
0.000
|
0.000
|
0.000
|
-
|
|
Reused in other
Projects (Inert) (in '000 m3)
|
0.000
|
0.000
|
0.000
|
• Lam Tei Quarry
• Eco Park
K.wah Recycle Facilities
• Lung Kwu Tan Tailor Recycled Aggregates
• Laintang BCP
• TM-CLKL
C2
|
|
Disposal as Public
Fill (Inert) (in '000 m3)
|
0.091
|
0.624
|
*1.016
|
Tuen Mun Area 38
|
*The quantity of Inert C&D
Materials in April 2020 was amended by contractor after the monthly EM&A
report was submitted
Table 9-2 Summary
of Quantities of C&D Wastes
|
Type of Waste
|
Quantity
|
Disposal
Location
|
|
Feb 20
|
Mar 20
|
Apr 20
|
|
|
0
|
0
|
0
|
-
|
|
Recycled
Paper / Cardboard Packaging (in '000kg)
|
0
|
0
|
0
|
-
|
|
Recycled
Plastic (in '000kg)
|
0
|
0
|
0
|
-
|
|
Chemical
Wastes (in '000kg)
|
0
|
0
|
0
|
-
|
|
General
Refuses (in '000m3)
|
0.038
|
0.183
|
0.092
|
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 formulated by ET Leader.
Weekly environmental site inspections should carry out to confirm the
environmental performance of the
construction site.
10.1.2 During the
Reporting Period, 12 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
|
|
4 February 2020
|
Ÿ Proper dust mitigation measures should be
provided for breaking works to reduce dust impact, (Toll Booth)
|
Ÿ Not required for reminder.
|
|
21 February 2020
|
Ÿ Ponding water cumulated inside the pit should be
cleaned. (Foot Bridge)
|
Ÿ Ponding water inside the pit was cleaned and the
pit was sealed to prevent stagnant water accmulation.
|
|
Ÿ NRMM label should be displayed properly for NRMM
using on-site. (Toll Booth)
|
Ÿ Proper NRMM label had been displayed.
|
|
Ÿ Drip tray should be provided for chemical storage
on-site. (LMR)
|
Ÿ Chemical container without drip tray was removed.
|
|
25 February 2020
|
Ÿ Oil stain leakage from the public road cumulated
inside the site bound should be cleaned. (Portion F)
|
Ÿ Oil stain leakage on the ground was cleaned.
|
|
3 March 2020
|
Ÿ Nil
|
Ÿ NA
|
|
10 March 2020
|
Ÿ Water spraying should be provided for excavation
works to reduce dust impact. (platform 10)
|
Ÿ Water spraying had been provided to reduce dust
impact.
|
|
17 March 2020
|
Ÿ Proper dust mitigation measures should be
provided for the exposed slope to reduce dust impact. (Portion J)
|
Ÿ Exposed slope had been covered with tarpaulin to
reduce dust impact.
|
|
Ÿ C&D waste and debris cumulated on-site should
be cleaned. (Portion J)
|
Ÿ C&D waste and debris cumulated on-site was
cleaned.
|
|
24 March 2020
|
Ÿ Proper dust mitigation measures should be
provided for excavation works to reduce dust impact. (Platform 10)
|
Ÿ Water spraying had been provided for the
excavation works to reduce dust impact.
|
|
31 March 2020
|
Ÿ Drip tray should be provided for chemical storage
on-site. (Platform 10)
|
Ÿ Oil drum without drip tray had been removed.
|
|
7 April 2020
|
Ÿ Drip tray should be provided for chemical storage
on-site. (Platform 10)
|
Ÿ Chemical containers without drip tray had been
removed.
|
|
14 April 2020
|
Ÿ Broken NRMM label should be replaced. (Platform
10)
|
Ÿ Broken NRMM label had been replaced.
|
|
Ÿ Proper dust mitigation should be provided for
stockpile storage on-site. (Platform 10 near Retaining Wall B)
|
Ÿ Stockpile of material storage on-site had been
removed.
|
|
21 April 2020
|
Ÿ Nil
|
Ÿ NA
|
|
28 April 2020
|
Ÿ Stockpile of bag cement should be covered with
tarpaulin to reduce dust impact. (Platform 10)
|
Ÿ Stockpile of bag cement had been removed.
|
Table 10-2 Summary
of Reminders/Observations of Site Inspection
|
Reporting Period
|
Date of site inspection
|
Nos. of findings / reminders
|
Follow-Up Status
|
|
February 2020
|
4th, 21st and 25th
February 2020
|
5
|
Completed
|
|
March 2020
|
3rd, 10th, 17th,
24th and 31st March 2020
|
5
|
Completed
|
|
April 2020
|
7th, 14th, 21st
and 28th April 2020
|
4
|
Completed
|
10.1.3 In the
Reporting Period, no non-compliance was recorded; however, 14 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.
1 weekly inspection on 11th
February 2020 had been ceased due to the outbreak of coronavirus
disease (COVID-19) at nearby Contract HY/2012/08, the
site had been closed between 6 and 19 February 2020.
Inspection Checklist for Vulnerable to Contaminated Water Discharge
10.1.4
Following
to the complaint about discharge of milky water to Bufferfly Beach on 2
September 2015. The Contractor
proposed to carry out daily inspection of wastewater treatment facilities,
concerned discharge points, drainage inlets and outlets during typhoon or wet
season.
10.1.5
In
addition, specific inspections would also be conducted before and after adverse
weather to ensure necessary remedial works would be carried out timely. Should
incidental contaminated water discharge be found at the inlet of the associated
drainage system, a specific inspection of the relevant drainage pipes would be
conducted for traces of deposit, and follow up actions would be taken when
necessary.
10.1.6
Following the EPD’s site
inspection on 22 February 2019, the contractor was advised to
carry on the temporary drainage inspection until the completion of
the construction of permanent drainage
system. As the permanent drainage system was fully
commissioned in July 2019, the temporary drainage
inspection has been terminated since then.
11.1
Environmental Complaint, Summons and Prosecution
11.1.1
In the Reporting Period, no environmental
complaint, summons and prosecution under the EM&A Programme
was lodged. However, total 5
exceedances of the environmental
performance (Action / Limit Levels) were recorded
for monitoring programme.
11.1.2 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
|
Environmental Aspect / Parameter
|
Environmental Performance
|
Event
Exceedance
|
|
Reporting
Period
|
Previous
|
Cumulative
|
|
Air Quality - 1-hr TSP
|
Action Level
|
4
|
79
|
83
|
|
Limit Level
|
1
|
10
|
11
|
|
Air Quality - 24-hr TSP
|
Action Level
|
0
|
5
|
5
|
|
Limit Level
|
0
|
3
|
3
|
Table 11-2 Statistical
Summary of Environmental Complaints
|
Reporting Period
|
Environmental
Complaint Statistics
|
|
Frequency
|
Cumulative
|
Complaint Nature
|
|
23
October 2014 –
31 January 2020
|
11
|
11
|
Water (6), Air (4), Noise (1), Others (2)
|
|
1 February
2020 –
30 April 2020
|
0
|
11
|
Water (6), Air (4), Noise (1), Others (2)
|
Table 11-3 Statistical
Summary of Environmental Summons
|
Reporting Period
|
Environmental Summons
Statistics
|
|
Frequency
|
Cumulative
|
Complaint Nature
|
|
23 October
2014 –
31 January 2020
|
0
|
0
|
NA
|
|
1 February
2020 –
30 April 2020
|
0
|
0
|
NA
|
Table 11-4 Statistical
Summary of Environmental Prosecution
|
Reporting Period
|
Environmental Prosecution
Statistics
|
|
Frequency
|
Cumulative
|
Complaint Nature
|
|
23
October 2014 –
31 January 2020
|
0
|
0
|
NA
|
|
1 February
2020 –
30 April 2020
|
0
|
0
|
NA
|
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
|
· No
operation of powered mechanical equipment is allowed during restricted hours
from 19:00 to 07:00 on the following day and whole day during Sunday and
public holiday without a valid construction noise permit (CNP).
· Keep good maintenance of
plants
· The noisy plants or works
provide mobile noise barriers
· Shut down the plants when
not in use
|
|
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 22nd Quarterly EM&A report presenting the monitoring
results and inspection findings for the Reporting Period from 1 February to 30 April 2020.
13.1.2 In this reporting period, 1 Action Level exceedance of 1-hour TSP was recorded at ASR5 on 12 March 2020; 3
Action Level exceedances of 1-hour TSP
were recorded at ASR1 and ASR5 on 8 April
2020 respectively; 1 Limit Level exceedance of 1-hour TSP was recorded at ASR1 on 14 April 2020. NOEs were issued to notify all
relevant parties. Investigation reports for the exceednances in March and April 2020 were
completed by ET and submitted to all relevant parties.
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 the compliance of the intended aims of the
mitigation measures.
13.1.5 Establishment period for the pitcher plants was completed at the end of
September 2016, the join site completion of Establishment period visit with
AFCD was undertaken on 23 September 2016 and the final pitcher plants report
was submitted to AFCD on early December 2016. Therefore
after 23 September 2016, only the integrity of the protection fence was checked
to fulfil the EIA requirement. During each inspection, the protection
mitigation measures were checking at the final receptor area to make sure no
site activities was undertaken inside the protection zone. Besides, no
construction activities were observed to be carried out at the surrounding of
the final receptor area. The
condition of chain link fence is good and no repair or maintenance is required.
13.1.6 No landfill gas monitoring was conducted in the consultation zone in this reporting month due to the excavation works within the zone was temporarily completed.
13.1.7 In the Reporting Period, no environmental
complaint was received.
13.1.8 No notifications of summons, or successful prosecution
were received by the Contractor during the Reporting Period.
13.1.9 During the
Reporting Period, 12 events of
the joint site inspections were undertaken to evaluate the site environmental
performance. No non-compliance of environmental impacts were
observed, indicating the implemented mitigation measures for air quality,
construction noise and water quality were effective. Minor deficiencies found in the weekly
site inspection were rectified within the specified deadlines. The environmental performance of the
Project was considered satisfactory.
13.1.10For
cultural heritage, the buffer zone between the working area and the Grave was
observed and no construction material or equipment was stored nearby.
13.1.11No
notifications of summons, or successful prosecution were received by the
Contractor during the Reporting Period.
13.2.1 As wet
season is approaching, muddy water or other water pollutants from site surface
runoff into the public areas will be key environment issue. Special attention should be paid on the
water quality mitigation measures to prevent surface runoff flow to public
area.
13.2.2 Moreover, air
quality mitigation measures such as watering of site area for at least 12 times per day and
covering of exposed slopes should be fully implemented to reduce construction
dust impact as recommended in the EMIS.
13.2.3 Stagnant
water should be removed as soon as possible after rain to prevent mosquito breeding
on site.