Table of Contents
1 Introduction 1
1.1 Contract Background 1
1.2 Report Structure 1
2 Contract Organization and Construction progress and Environmental Submissions 2
2.1 Contract Organization 2
2.2 Construction Progress 2
2.3 Summary of Environmental Submissions 2
3 Summary of Impact Monitoring Requirements Under the Contract 3
3.1 General 3
3.2 Air Quality Monitoring 3
3.3 Monitoring Location 3
3.4 Monitoring Frequency 3
3.5 Monitoring Equipment 4
3.6 Derivation of Action/Limit (A/L) Levels 5
3.7 Other Environmental Aspects 5
3.8 Monitoring Schedule 6
4 Air Quality Monitoring 7
4.1 General 7
4.2 Air Quality Monitoring Results in Reporting
Period 7
4.3 Action and Limit (A/L) Levels Exceedance 7
4.4 Air Quality Exceedance Investigation 7
5 Ecology Monitoring 8
5.1 General 8
5.2 Pitcher Plants Inspection 8
6 CULTURAL HERITAGE 9
6.1 General 9
6.2 Grave Inspection 9
7 LandscAPe and Visual 10
7.1 General 10
7.2 Landscape and Visual Inspection 10
8 Landfill Gas Hazard Monitoring 11
8.1 General 11
8.2 Landfill Gas Monitoring Result 11
9 Waste Management 13
9.1 General Waste Management 13
9.2 Records of Waste Quantities 13
10 Inspection and Audit 14
10.1 Site Inspection 14
11 Environmental Complaint and Non-compliance 16
11.1 Environmental Complaint, Summons and Prosecution 16
12 Implementation Status of Mitigation Measures 17
12.1 General Requirements 17
12.2 Tentative Construction Activities in the Coming
Month 17
12.3 Key Environmental Issues for the Coming Month 18
13 Conclusions and Recommendations 19
13.1 Conclusions 19
13.2 Recommendations 19
List
of TABLES
Table
2-1 Status
of Environmental Licenses and Permits of the Contract
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 Landfill
Gas Monitoring Zone
Table
8-2 Summary
of Landfill Gas Measurement Results
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
Table
10-2 Outstanding
Items in Site Inspection of previous Reporting Period
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 Appendices
Appendix A Project
Layout Plan
Appendix B Layout Plan of the Contract
Appendix C Organization
of the Contract
Appendix D Three Months rolling Programme
Appendix E Monitoring
Locations for the Contract
Appendix F Event
and Action Plan
Appendix G Monitoring
Schedule
Appendix H Calibration
Certificates of Monitoring Equipment
Appendix I Landfill
Gas Monitoring Results and Graphical Plots
Appendix J Investigation
Report for Exceedance
Appendix K Checklist for Landscape and Visual
Monitoring
Appendix L Monthly
Summary Waste Flow Table
Appendix M Environmental Mitigation and Enhancement
Measures Implementation Schedule (EMIS)
Appendix N Cumulative Statistics on Exceedance and
Complaint
Appendix O Investigation Report for the Complaint
Appendix P Inspection
Checklist for vulnerable to contaminated water discharge
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 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
This is 28th monthly EM&A
report presenting the monitoring results and inspection findings for period from 1 to 28 February 2017.
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 and Environmental Submissions
Section 3 Summary of Impact
Monitoring Requirements under the Contract
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 Inspections and Audit
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. The three-months rolling programme of the Contract is enclosed in Appendix D.
Ÿ
Instrumentation and Monitoring
Ÿ
Site Formation –
Earthwork on Slope D and E; surface drainage on Slope C, D & E and Portion
H;
Ÿ
Toll Plaza Decking TD1 and
TD2;
Ÿ
Toll Plaza Footbridge;
Ÿ
Retaining Structure RW_A,
RW_B and RW_F;
Ÿ
Toll Collector Subway,
Toll Booth Canopy & Associated Works;
Ÿ
Bridge G1 and Bridge H1
by Form Traveller;
Ÿ
Bridge G2
Ÿ
Sewer Culvert at FC1 and
FC2;
Ÿ
Road and Drainage Works
at +11mPD, +19mPD, Portion H, Portion J and Lung Mun
Road
2.3
Summary of Environmental Submissions
2.3.1
The environmental submissions under the EP
requirement had been submitted to the EPD and they are 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 environmental
permits, licenses and notifications for the Contract is presented in Table 2-1.
Table 2-1 Status of Environmental
Licenses and Permits of the Contract
|
No.
|
Type of Permit/
License
|
Submission Date
|
Reference/
License No.
|
Date of Issue
|
Date of Expiry
|
|
1
|
Air pollution
Control (Construction Dust) Regulation
|
06-08-2014
|
377719
|
06-08-2014
|
N/A
|
|
2
|
Chemical Waste
Producer Registration - Waste Producers Number
|
06-08-2014
|
5117422C389301
|
03-09-2014
|
N/A
|
|
3
|
Water Pollution Control Ordinance -Variation of Effluent Discharge
License
|
22-08-15
|
WT00023973-2016
|
14-03-16
|
30-09-2019
|
|
4
|
Waste Disposal
Regulation - Billing Account for Disposal of Construction Waste
|
21-07-2014
|
7020460
|
01-08-2014
|
N/A
|
|
5
|
CNP for Multiple
Task
|
18-10-2016
|
GW-RW0619-16
|
05-11-2016
|
04-05-2017
|
|
6
|
CNP for MH5
|
1-11-2016
|
GW-RW0650-16
|
18-11-2016
|
17-05-2017
|
|
7
|
CNP for Tunnel
Works
|
3-11-2016
|
GW-RW0653-16
|
23-11-2016
|
22-05-2017
|
|
8
|
CNP for Falsework
Erection
|
01-12-2016
|
GW-RW0724-16
|
28-12-2016
|
16-03-2017
|
|
9
|
CNP for Portion H
Roundabout
|
21-11-2016
|
GW-RW0704-16
|
06-12-2016
|
21-02-2017
|
|
10
|
CNP for Portion H
Roundabout
|
02-02-2017
|
GW-RW0049-17
|
14-02-2017
|
18-08-2017
|
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
|
ID
|
Location
|
Air monitoring station Description
|
|
ASR1
|
Tuen Mun
Fireboat Station
|
EM&A Manual
|
|
ASR5
|
Pillar Point Fire Station
|
EM&A Manual
|
|
AQMS1
|
Previous River Trade Golf
|
Enhanced TSP Level under EP
condition 2.4
|
|
ASR6
|
Butterfly Beach Laundry
|
Enhanced TSP Level under EP
condition 2.4
|
|
ASR10
|
Butterfly Beach Park
|
Enhanced TSP Level under EP
condition 2.4
|
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
|
Condition
|
Monitoring
Parameter
|
Monitoring
Location
|
Frequency
|
Monitoring Requirement
|
|
General
|
1-hour TSP
|
ASR1, ASR5, AQMS1, ASR6, ASR10
|
3 times per day every six days
|
Throughout the Northern Connection, toll plaza and tunnel buildings
construction works
|
|
24-hour TSP
|
ASR1, ASR5, AQMS1, ASR6, ASR10
|
Daily every six days
|
|
Special
|
1-hour TSP
|
ASR1, ASR5, AQMS1, ASR6, ASR10
|
3 times per day every three days
|
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
|
|
24-hour TSP
|
ASR1, ASR5, AQMS1, ASR6, ASR10
|
Daily every three days
|
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 24-hour TSP measurement shall be determined by HOKLAS
accredited laboratory.
3.5.5
If the ET Leader
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 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
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
|
|
ASR1
|
213
|
260
|
331
|
500
|
|
ASR5
|
238
|
260
|
340
|
500
|
|
AQMS1
|
213
|
260
|
335
|
500
|
|
ASR6
|
238
|
260
|
338
|
500
|
|
ASR10
|
214
|
260
|
337
|
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.
3.8.1
The monitoring schedule
for landscape &visual and landfill gas for the present and next reporting
period are presented in Appendix G.
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
2017).
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
|
Date of Exceedance
|
Monitoring Station
|
Air Quality
Parameter
|
Result
|
Exceed
|
|
NA
|
NA
|
NA
|
--
|
--
|
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 shall be conducted at least once every week to report the protection measure of the Pitcher Plants during construction period.
5.1.2
A total of 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.
5.2.1
Inspection for the mitigation
measures implementation status of the Pitcher Plant at the final receptor area were
performed on 2nd, 7th, 14th, 21st and 28th February 2017 by the ET in the
Reporting Period.
5.2.2
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.
5.2.3
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,
Grave G1 of inspection was undertaken on 2nd, 7th, 14th, 21st and 28th February 2017. 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.
6.2.2
Since construction works
very close to buffer zone of the Grave G1, cultural heritage mitigation measures and protection measures as provided by the Contractor, therefore has fully
implemented in accordance with EM&A Manual requirements.
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 on 3rd, 10th, 17th and 24th February 2017 by the Registered Landscape Architect.
7.2.2
Most of the landscape works
such as planting was not yet commenced.
The detailed inspection checklists were provided in Appendix K.
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 (SO) 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 and 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
|
Yes
|
|
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
|
Yes
|
8.2.1
In the Reporting Period, landfill gas monitoring was conducted at the zone TD1 and LMR which have excavation works was undertaking. A BIOGAS 5000 gas analyser was
used for the landfill gas monitoring and the valid calibration certificate is
presented in Appendix H.
8.2.2
There were a total of 24 days monitoring were carried by the Safety Officer or an approved and
qualified persons. The results of landfill gas measurement are
summarized in Table 8-2. Moreover, database of monitoring
result and graphical plot are attached in Appendix I.
Table 8-2 Summary of Landfill
Gas Measurement Results
|
Landfill Gas Parameter
|
Action Level
|
Limit Level
|
Detectable
at TD1
|
Detectable
at LMR
|
|
Min
|
Max
|
Min
|
Max
|
|
Methane
|
>10% LEL (>0.5% v/v)
|
>20% LEL (>1% v/v)
|
0.1%
|
0.1%
|
0.1%
|
0.1%
|
|
Oxygen
|
<19%
|
<18%
|
21.0%
|
21.1%
|
21.0%
|
21.1%
|
|
Carbon Dioxide
|
>0.5%
|
>1.5%
|
0.1%
|
0.2%
|
0.1%
|
0.2%
|
8.2.3
The measurement results
shown that slightly methane concentration was detected and oxygen concentration
measured was over 21.0 % and Carbon Dioxide was between 0.1% and 0.2 %. No exceedance was triggered and
therefore no corrective action was required accordingly.
9.1.1
Waste management was carried out by an
on-site Environmental Officer or an Environmental Supervisor from time to time.
The effective management of waste arising during the construction phase will be
monitored through the site audit programme. The aims
of the waste audit are:
l to ensure
the waste arising from the works are handled, stored, collected, transferred
and disposed of in an environmentally acceptable manner; and
l to encourage the reuse and recycling of material.
9.1.2
In addition to the site inspections, the ET
shall review the documentation procedures prepared by the Waste Coordinator
once a week to ensure proper records are being maintained and procedures
undertaken in accordance with the Waste Management Plan.
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
The quantities of wastes generated under the
Contract in this Reporting Period are summarized in Tables 9-1 and 9-2 and the Monthly
Summary Waste Flow Table is shown in Appendix L. Whenever possible, materials were reused
on-site as far as practicable.
Table 9-1 Summary of
Quantities of Inert C&D Materials
|
Type of Waste
|
Quantity
|
Disposal Location
|
|
Reused in this
Contract (Inert) (`000m3)
|
1.066
|
-
|
|
Reused in other
Projects (Inert) (`000m3)
|
10.617
|
1.
Lam Tei Quarry
2.
Eco Park K.Wah
Recycle Facilities
3.
Lung Kwu Tan
Tailor Recycled Aggregates
4.
Liantang BCP
Project
5.
TM-CLKL Contract 2 - Northern Connection
Sub-sea Tunnel Section Project
|
|
Disposal as Public
Fill (Inert) (`000m3)
|
2.566
|
Tuen Mum Area 38
|
Table 9-2 Summary
of Quantities of C&D Wastes
|
Type of Waste
|
Quantity
|
Disposal Location
|
|
|
0
|
-
|
|
Recycled
Paper / Cardboard Packaging (`000kg)
|
0
|
-
|
|
Recycled
Plastic (`000kg)
|
0
|
-
|
|
Chemical
Wastes (`000kg)
|
0
|
License Collector
|
|
General
Refuses (`000m3)
|
0.074
|
WENT
|
10.1.1
According to the approved EM&A Manual,
the environmental site inspection shall be formulated by ET Leader on weekly
basis to confirm the environmental performance of the construction site.
Findings / Deficiencies During
Reporting Period
10.1.2
In the Reporting Period, joint site
inspections to evaluate site environmental performance were carried out by the RE, ET and the
Contractor on 2nd, 7th, 14th, 21st and 28th February 2017. No non-compliance was
noted but 1 observation and 4 reminders were recorded during site inspection. Moreover, ENPO/IEC has attended joint
site inspection on 28th February 2017.
10.1.3
The findings / deficiencies observed during
the weekly site inspection in the Reporting Period are listed in Table 10-1.
Table 10-1 Site
Observations for the Contract
|
Date
|
Findings / Deficiencies
|
Follow-Up Status
|
|
2 February 2017
|
Ÿ Empty bucket cumulated on
site should be cleaned. (Retaining Wall A)
|
Ÿ Not required for reminder.
|
|
7 February 2017
|
Ÿ Stockpile storage on site
should be covered to minimize dust generation.. (Central Divider)
|
Ÿ Not required for reminder.
|
|
14 February 2017
|
Ÿ
Broken tarpaulin covered on the exposed slope should
be replaced. (Bridge H1)
|
Ÿ Broken tarpaulin was
replaced.
|
|
21 February 2017
|
Ÿ Dust control measures
frequency should be increased during dry season to minimize dust impact.
(General)
|
Ÿ Not required for reminder.
|
|
28 February 2017
|
Ÿ Proper dust mitigation
measures should be provided for stockpile on site to minimize dust impact.
(Retaining Wall F)
|
Ÿ Not required for reminder.
|
10.1.4
No
outstanding deficiency remained to be rectified in previous Reporting Period
which presented in Table 10-2.
Table 10-2 Outstanding
Items in Site Inspection of previous Reporting Period
|
Date
|
Findings
/ Deficiencies
|
Follow-Up
Status
|
|
--
|
Ÿ NA
|
Ÿ NA
|
10.1.5
Air
quality mitigation measures such as watering of site area for 12 times per day
and covering of exposed slopes should be implemented during the construciton
period to reduce construction dust impact as recommended in the
EMIS.
10.1.6
Good site practice for daily housekeeping is
reminded. In addition, clean-up of the waste skips and wastewater treatment
system should be increased to ensure these facilities functional
and effective.
10.1.7
In addition, muddy water or other water
pollutants from site surface runoff shall not be discharged into public areas. Water quality mitigation measures to
prevent surface runoff into the public areas should be paid on special attention.
10.1.8
Stagnant water should be removed as
soon as possible after rain to prevent mosquito breeding on site.
Inspection Checklist for Vulnerable to
Contaminated Water Discharge
10.1.9
Following to the complaint about
discharge of milky water to Bufferfuly 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.
10.1.10
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.
10.1.11
The daily inpsection for vulnerable
to contaminated water discharge was temporarily suspended during the dry season
and will be resumed at wet season or after the rainstorm warnings. As requested
by the EPD, the associated inspection checklist should be presented in the
Monthly EM&A Report and it is shown in Appendix P (if necessary).
11.1.1
In the Reporting Period, no environmental
complaint, summons and prosecution under the EM&A Programme
was lodged. Moreover, no exceedance
of the environmental performance (Action / Limit Levels) was recorded for
monitoring programme.
11.1.2
The statistical summary table of environmental
exceedance, complaint, summons and prosecution are 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 Month
|
Previous Months
|
Cumulative
|
|
February
2017
|
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
|
|
Air
|
Noise
|
Water
|
|
February
2017
|
0
|
7
|
1
|
NA
|
6
|
Table 11-3 Statistical
Summary of Environmental Summons
|
Reporting Period
|
Environmental Summons Statistics
|
|
Frequency
|
Cumulative
|
Complaint Nature
|
|
Air
|
Noise
|
Water
|
|
February
2017
|
0
|
0
|
NA
|
NA
|
NA
|
Table 11-4 Statistical
Summary of Environmental Prosecution
|
Reporting Period
|
Environmental Prosecution Statistics
|
|
Frequency
|
Cumulative
|
Complaint Nature
|
|
Air
|
Noise
|
Water
|
|
February
2017
|
0
|
0
|
NA
|
NA
|
NA
|
11.1.3
In the
Reporting Period, no warning letter related to environmental issue was
received from the EPD or HyD.
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 M.
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 M.
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.
|
12.2.1
Construction activities as undertaken in the
coming month for the Contract lists below:
Ÿ
Site Formation –
Earthwork on Slope D and E; surface drainage on Slope C, D & E and Portion
H;
Ÿ
Toll Plaza Decking TD1
and TD2;
Ÿ
Toll Plaza Footbridge;
Ÿ
Retaining Structure RW_A,
RW_B and RW_F;
Ÿ
Toll Collector Subway
& Associated Works;
Ÿ
Bridge G1, G2 and Bridge
H1 by Form Traveller;
Ÿ
Sewer Culvert at FC1 and
FC2;
Ÿ
Waterproofing and lining
at Vehicular Underpass; and
Ÿ
Road and Drainage Works
at +11mPD, +19mPD and Portion H
12.3.1
Key environmental issues to be considered in the
coming month include:
Ÿ
Implementation of dust
suppression measures at all times;
Ÿ
Potential wastewater
quality impact due to surface runoff;
Ÿ
Potential fugitive
dust impact due to the dry/loose/exposure soil surface/dusty material;
Ÿ
Ensure dust suppression measures are
implemented properly;
Ÿ
Sediment catch-pits and silt removal
facilities should be regularly maintained;
Ÿ
Management of chemical wastes;
Ÿ
Site effluent discharge to the nearby nullah is prohibited;
Ÿ
Follow-up of improvement on general waste
management issues; and
Ÿ
Implementation of construction noise
preventative control measures
13.1.1
This is 28th monthly EM&A
report presenting the monitoring results and inspection findings for the period
of 1st to 28th February 2017.
13.1.2
No air
quality monitoring including 1-hour and 24-hour TSP exceedance was recorded in
the Reporting Period.
13.1.3
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.
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.
Most of the landscape works such as planting was not yet commenced.
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
Landfill
gas monitoring was conducted at the TD1 and Lung Mun Road works area. The monitoring results shown no
exceedances were triggered.
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
In the Reporting
Period, joint site inspection by the
RE, ET and the Contractor was carried out on
2nd, 7th, 14th, 21st and 28th February 2017 and the IEC has attended the joint site inspection on 28th February 2017. No non-compliance was recorded during
the site inspection but 1 observation and 4 reminders were recorded.
13.1.10
In the Reporting Period,
Grave G1 of inspection was undertaken on 2nd, 7th, 14th, 21st and 28th February 2017. Based on the inspection findings,
the cultural heritage mitigation measures as implemented by the Contractor are
fully complied with the EM&A Manual requirements.
13.2.1
During dry season, air quality mitigation
measures such as watering of site area for 12 times per day and covering of
exposed slopes should be fully implemented to reduce construction dust impact as
recommended in the EMIS.
13.2.2
Moreover, 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.
13.2.3
Stagnant water should be removed as soon as
possible after rain to prevent mosquito breeding on
site.
