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AUES Job No.: TCS00715/14 |
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Tuen Mun - Chek
Lap Kok Link Contract No. HY/2013/12 ¡V Northern Connection Toll Plaza and Associated Works |
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17th Monthly
Environmental Monitoring and Audit (EM&A) Report ¡V March 2016 |
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Prepared
For CRBC
and Kaden Joint Venture |
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Date |
Reference No. |
Prepared By |
Certified By |
27 April 2016 |
TCS00715/14/600/R0182v2 |
Ben Tam (Environmental Consultant) |
T.W. Tam (Environmental Team Leader) |
EXECUTIVE
SUMMARY
ES01
This is the 17th Monthly EM&A Report presenting the monitoring
results and inspection findings for the period from 1 to 31 March
2016 (hereinafter ¡¥the Reporting Period¡¦).
Summary of EM&A activities for the Reporting Period
ES02
The EM&A activities
conducted in the Reporting Period are summary in below:-
24-hours TSP of Air
Quality Monitoring ¡V 50
events
1-hour TSP of Air
Quality Monitoring ¡V 150 events
Cultural Heritage
Inspection ¡V 5 events
Landfill Gas Monitoring ¡V 24 days
Landscape & Visual Monitoring ¡V 4 events
Environmental Site
Inspection ¡V 5 events
Breach
of Action and Limit (A/L) Levels
ES03
In the Reporting Period, no exceedances of
1-hour and 24-hour TSP were recorded according to the measurement results by
the ET of Contract HY/2012/08. The
summary of breach of air quality performance is shown below.
Environmental
Aspect |
Monitoring
Parameters |
Action Level |
Limit Level |
Event & Action |
||
NOE Issued |
Investigation |
Corrective Actions |
||||
Air Quality |
1-hour TSP |
0 |
0 |
0 |
0 |
0 |
24-hour TSP |
0 |
0 |
0 |
0 |
0 |
ES04
No noise complaints were received in the
Reporting Period.
ES05
Landfill gas monitoring was conducted at the
construction of Retaining Wall B and Retaining Wall F by the Safety
Officer. The monitoring results
shown no exceedances were triggered.
ES06
Site inspection for landscape and visual was
conducted on weekly basis by the Landscape Architect to ensure the compliance
with the intended aims of the mitigation measures. Most of the landscape works such as
planting was not yet commenced.
ES07
In the Reporting
Period, joint site inspection by the RE,
ET and the Contractor was carried out on
1st, 8th, 15th,
22nd and 29th March 2016 and the IEC has attended the joint site inspection on 22nd March 2016. No non-compliance was
recorded during the site inspection but 8 observations and 4 reminders were recorded.
ES08
Inspection for Pitcher
Plants of ecology and grave of culture heritage
were also carried out during the weekly site inspection. It was observed that the transplanted
pitcher plants were properly protected and the growth was normally in fair condition
except a few individuals appeared poor condition. It is considered that the Pitcher Plant were establishing after
transplanting shock and adapting to the condition of the Final Receptor Site
and frequent watering is recommended.
Environmental Complaint
ES09
In the Reporting Period,
no environmental complaint was received.
ES10 The
statistical summary of environmental complaints is summarized in the following
table.
Reporting Period |
Environmental
Complaint Statistics |
|
Frequency |
Cumulative |
|
Since the Contract commencement |
3 |
3 |
March 2016 |
0 |
3 |
Notification of Summons and Successful Prosecutions
ES11
No environmental summons or successful
prosecutions were recorded in the Reporting Period.
Reporting Change
ES12
No reporting changes were made in the
Reporting Period.
Future Key Issues
ES13 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.
ES14
Although
in coming wet 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.
ES15 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 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 ¡V 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 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
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 ¡V Northern Connection Toll Plaza and
Tunnel Section ((hereafter ¡§the Contract¡¨) and this Contract is part of the Tuen Mun ¡V 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 17th
monthly EM&A report presenting the monitoring results and inspection
findings for period from 1 to 31 March 2016.
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.
Instrumentation and Monitoring
Site Formation ¡V Retaining Structure for RW_A,
Slope TP_F, TP_G, TP_A and Associated Works, TP_B and Associated Works, TP_C
and Associated Works, TP_D and Associated Works, TP_E and Associated Works and
Slope Upgrading Works
Toll Plaza Decking TD1-Section 1, TD2-Section 1
Toll Plaza Footbridge-Section 1
Retaining Structure RW_B and RW_F
Toll Collector Subway & Associated
Works-Section 1
Bridge G1, G2,Bridge H1 Section 2
Sewer Culvert at FC1 and FC2
Excavation of underpass from East Portal
Road and Drainage Works at Butterfly Bay, +11mPD
and +19mPD
2.3.1
The environmental submissions under the EP
requirement had been submitted to the EPD and they are listed in below:
Monitoring Plan on Construction Dust
(submission refer to Contract HY/2012/08)
Landscape and Visual Plan (not yet endorsed by EPD)
Waste Management Plan (endorsed by EPD on 16 March 2015)
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
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 -
Discharge License |
13-08-2014 |
WT00020065-2014 |
29-09-2014 |
30-09-2019 |
4 |
Variation of Effluent Discharge License |
22-08-15 |
WT00023973-2016 |
14-03-16 |
N/A |
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 |
7-10-2015 |
GW-RW0520-15 |
05-11-2015 |
04-05-2016 |
6 |
CNP for MH5 |
23-10-2015 |
GW-RW0563-15 |
18-11-2015 |
17-05-2016 |
7 |
CNP for Tunnel works |
4-11-2015 |
GW-RW0582-15 |
23-11-2015 |
22-05-2016 |
8 |
CNP for falsework erection |
01-02-2016 |
GW-RW0076-16 |
15-02-2016 |
21-04-2016 |
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 ¡V
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 (£gg/m3) |
1-hour TSP (£gg/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 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.
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 (March
2016).
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 finial 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
growth and mitigation measures implementation status of the Pitcher Plant at
the final receptor area were performed on 1st,
8th, 15th, 22nd and 29th March 2016
by the ET in the Reporting Period.
5.2.2
During each inspection, the transplanted pitcher plant
was performed random checking at the final receptor area. It was observed that the transplanted
pitcher plants were properly protected and the growth was normally in fair
condition except a few individuals appeared poor condition. It is considered that the Pitcher Plant were establishing after
transplanting shock and adapting to the condition of the Final Receptor Site
and frequent watering is recommended. 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.
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:
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
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:
The extent of the agreed
works areas should be regularly checked during the construction phase to ensure
the buffer is being maintained; and
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 1st,
8th, 15th, 22nd and 29th March 2016. 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.
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 4th,
11th, 18th and 25th March 2016 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:
at the ground surface
before excavation commences;
immediately before any worker
enters the excavation;
at the beginning of each
working day for the entire period the excavation remains open; and
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:
directly after the
excavation has been completed; and
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.
8.2.1
In the Reporting Period, landfill gas monitoring was conducted at the
construction of Retaining Walls B and F.
Location of both Retaining Walls is illustrated in Appendix E. 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 8-1. Moreover, database of monitoring result and
graphical plot are attached in Appendix I.
Table 8-1 Summary of
Landfill Gas Measurement Results
Landfill Gas Parameter |
Action Level |
Limit Level |
Detectable
at Retaining Wall B |
Detectable
at Retaining Wall F |
||
Min |
Max |
Min |
Max |
|||
Methane |
>10% LEL (>0.5% v/v) |
>20% LEL (>1% v/v) |
0% |
0.1% |
0% |
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) |
16.333 |
- |
Reused in other
Projects (Inert) (`000m3) |
6.392 |
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) |
0.496 |
Tuen Mum Area 38 |
Table 9-2 Summary
of Quantities of C&D Wastes
Type of Waste |
Quantity |
Disposal Location |
Recycled Metal
(`000kg) |
0 |
- |
Recycled
Paper / Cardboard Packing (`000kg) |
0 |
- |
Recycled
Plastic (`000kg) |
0 |
- |
Chemical
Wastes (`000kg) |
0 |
- |
General
Refuses (`000m3) |
0.089 |
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 1st,
8th, 15th, 22nd and 29th March 2016. No non-compliance was
noted but 8 observations and 4
reminders were recorded during site inspection. Moreover, ENPO/IEC has attended joint
site inspection on 22nd March 2016.
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 |
1 Mar 2016 |
Wastewater overflow from
site into public area was observed. The contractor should divert the
wastewater to de-silting facilities and prevent site discharge water overflow
into the public area. (Lung Mun Road near retaining wall B) |
No site discharge water
overflow into the public area was observed. |
General refuse scattered on
site was observed and housekeeping should be improved. Also, general refuse and C&D waste
should be disposed separately. (Under retaining wall B) |
Housekeeping was improved
general refuse scattered on site was cleared. |
|
Chemical container without drip
tray was observed. Drip tray should be provided for all chemical storage on
site. (MH5 & Near retaining wall B) |
Drip tray was provided for
the oil drum. |
|
8 Mar 2016 |
C&D waste cumulated on site
was observed and housekeeping should be improved. The contractor should clean
up the waste more frequently. (General) |
Housekeeping was improved
and C&D waste cumulated on site was disposed properly. |
Oil drums without drip tray
was observed. Drip tray should be provided for all chemical storage on site.
(Workshop near weight bridge & works area near TD1) |
Drip tray was provided for
the chemial containers. |
|
Generator without NRMM label
was observed. The contractor should display the label appropriately.
(Workshop of Tinkle) |
NRMM label was displayed
appropriately. |
|
15 Mar 2016 |
It was reminded that loose
and C&D materials near the stream should be removed and proper protection
for the edge should be provided to prevent muddy surface runoff overflow into
the stream. (Stream B) |
Not required for reminder. |
It was reminded that
stagnant water cuulated inside the drip tray should be removed after the
rainstorm. (Works area near TD1) |
Not required for reminder. |
|
22 Mar 2016 |
Tree protection zone should
be set up for the retained tree. (Workshop near wheeel washing bay) |
Tree protection zone was set up for the retained tree. |
It was reminded that site surface
run-off after the rainstorm should be treated before discharge. |
Not required for reminder. |
|
29 Mar 2016 |
Diverted site discharge overflow into the public area
was observed. The Contractor should
improve the diverted system to prevent the site discharge spillage into the
public area (Lung Mun Road near Stream A) |
No discharge overflow was observed. |
It was reminded that dust
mitigation measures should be provided for the dusty site activities to
reduce dust impact during dry season. |
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 |
-- |
NA |
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 on 11 April 2016.
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 |
|||
Mar 2016 |
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 |
|||
Mar 2016 |
0 |
3 |
NA |
NA |
3 |
Table 11-3 Statistical
Summary of Environmental Summons
Reporting Period |
Environmental Summons Statistics |
||||
Frequency |
Cumulative |
Complaint Nature |
|||
Air |
Noise |
Water |
|||
Mar 2016 |
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 |
|||
Mar 2016 |
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 CEDD.
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 |
¡P Maintain damp / wet surface
on access road ¡P Keep slow speed in the sites ¡P All vehicles must use wheel
washing facility before off site ¡P Sprayed water during rock
breaking works ¡P During transportation by truck, materials loaded lower
than the side and tail boards, and covered before transport ¡P Compacted all soil stockpiles ¡P Part of the exposed slopes covered geotextile net |
Cultural Heritage |
¡P Set a buffer zone between the working area
and the Grave ¡P All construction materials and equipment store far from
the Grave ¡P Inspection the Grave to ensure provision mitigation
measures effective |
Ecology |
¡P
Wire fencing provided
for temporary protect Pitcher Plants ¡P
Undertake weekly
inspection of Pitcher Plants |
Landfill Gas Hazard |
¡P
Landfill Gas
measurement undertake during trench excavation |
Water Quality |
¡P Temporary drainage system
provide for surface runoff prevent discharge to public area ¡P Wastewater to be treated by
sedimentation tank before discharge. |
Noise |
¡P Restrain operation time of plants
from 07:00 to 19:00 on any working day except for Public Holiday and Sunday. ¡P Keep good maintenance of
plants ¡P The noisy plants or works
provide mobile noise barriers ¡P Shut down the plants when
not in used |
Waste and Chemical
Management |
¡P On-site sorting prior to
disposal ¡P Follow requirements and
procedures of the ¡§Trip-ticket System¡¨ ¡P
Predict required quantity of concrete accurately ¡P Collect the unused fresh concrete at designated
locations in the sites for subsequent disposal |
General |
¡P The site was generally kept
tidy and clean. |
12.2.1
Construction activities as undertaken in the
coming month for the Contract lists below:
Site Formation ¡V
Retaining Structure for RW_A, Slope TP_F, TP_G, TP_A and Associated Works, TP_B
and Associated Works, TP_C and Associated Works, TP_D and Associated Works,
TP_E and Associated Works and Slope Upgrading Works
Toll Plaza
Decking TD1-Section 1, TD2-Section 1
Toll Plaza
Footbridge-Section 1
Retaining
Structure RW_B and RW_F
Toll Collector
Subway & Associated Works-Section 1
Bridge G1,
G2,Bridge H1 Section 2
Sewer Culvert at
FC1 and FC2
Excavation of
underpass from East Portal
Road and
Drainage Works at Butterfly Bay, +11mPD and +19mPD
12.3.1
Key environmental issues to be considered in
the coming month include:
Implementation of dust
suppression measures at all times;
Potential wastewater
quality impact due to surface runoff;
Potential fugitive
dust impact due to the dry/loose/exposure soil surface/dusty material;
Ensure dust suppression measures are
implemented properly;
Sediment catch-pits and silt removal
facilities should be regularly maintained;
Management of chemical wastes;
Site effluent discharge to the nearby nullah
is prohibited;
Follow-up of improvement on general waste
management issues; and
Implementation of construction noise
preventative control measures
13.1.1
This is 17th
monthly EM&A report presenting the monitoring results and inspection
findings for the period of 1st to 31st March 2016.
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
Weekly site inspection and random checking respectively
were performed for the transplanted
Pitcher Plants in the finial receptor site. It was observed that the
transplanted pitcher plants were properly protected and the growth was normally
in fair condition except a few individuals appeared poor condition. It is considered that the Pitcher Plant were establishing after
transplanting shock and adapting to the condition of the Final Receptor Site
and frequent watering is recommended.
13.1.6
Landfill
gas monitoring was conducted at the construction of Retaining Walls B and F by
the Safety Officer. 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
1st, 8th, 15th,
22nd and 29th March 2016 and the IEC has attended the joint site inspection on 22nd March 2016. No non-compliance was
recorded during the site inspection but 8 observations and 4 reminders were
recorded.
13.1.10
In the Reporting Period,
Grave G1 of inspection was undertaken on 1st,
8th, 15th, 22nd and 29th March 2016. 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
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.
13.2.2
As wet season is approaching, muddy water or other
water pollutants from site surface runoff discharged into public areas would be
a potential environmental 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.