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 Landscpae 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 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 Master Construction
Program and three Months roll Program
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
1.1.1
CRBC-Kaden Joint Venture (hereafter
“CRBC-Kaden JV”) is commissioned by the Highways Department (HyD) as the Main Contractor of the Contract No. HY/2013/12 – Northern Connection Toll Plaza and
Tunnel Section ((hereafter “the Contract”) and this Contract is part of the Tuen Mun – Chek
Lap Kok Link (TM-CLK Link Project). TM-CLK Link Project is a Designated
Project under Environmental Permit number VEP-354/2009D 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 5th
monthly EM&A report presenting the monitoring results and inspection
findings for period from 1 to 31 March 2015.
1.2.1
The Monthly Environmental Monitoring and
Audit (EM&A) Report is structured into the following sections:-
Section 1 Introduction
Section 2 Contract Organization
and Construction Progress 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 master construction program of the
Contract is enclosed in Appendix D.
Ÿ
Instrumentation and Monitoring
Ÿ
Site Formation to Slope A, B, C, D, E, TP_F and
Upgrading Works
Ÿ
Excavation to Slope A, B,C,D & E
Ÿ
Vehicular Underpass TN-01
Ÿ
Construction of Culvert 1-Stage 4 & Conforming
design
Ÿ
Bridge TD1, Bridge G1, G2,Bridge H1& Footbridge
Ÿ
Retaining Structure RW_B-Section 1
Ÿ
Ground Investigation Works – Various Locations
Ÿ
Site Clearance – Various Locations
Ÿ
Tree Felling – Various Locations
Ÿ
Natural terrain hazard mitigation measures
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 -
Discharge License
|
13-08-2014
|
WT00020065-2014
|
29-09-2014
|
30-09-2019
|
|
4
|
Waste Disposal Regulation - Billing Account
for Disposal of Construction Waste
|
21-07-2014
|
7020460
|
01-08-2014
|
N/A
|
|
5
|
Permission
to Transplant Pitcher Plant
|
02-12-2014
|
(7) in AF CON 11/13 pt.4
|
09-12-2014
|
08-06-2015
|
|
6
|
CNP for Multiple Task
|
05-12-2014
|
GW-RW0949-14
|
05-12-2014
|
04-05-2015
|
|
7
|
CNP for GI works
|
23-2-2015
|
GW-RW0134-15
|
16-03-2015
|
07-04-2015
|
3.1.1
The major construction
activities under the Contract are land-based and no marine work will be
involved. In accordance with the
Project EM&A Manual requirements, the environmental aspects under the
Contract shall be included air quality, ecological, cultural heritage, landscape
and visual, landfill gas and site inspection during
construction period. In addition,
audit of the contractor’s implementation of the construction noise and
land-based water quality pollution control measures are also required for the
Contract.
3.1.2
A summary of construction phase EM&A
requirements are presented in the
sub-sections below.
3.2.1
The construction phase monitoring air quality
shall cover the following parameters:
•
1-hour TSP; and
•
24-hour TSP
3.3.1
The air quality monitoring stations for impact monitoring are listed in Table 3-1 and illustrated in Appendix E.
Table 3-1 Air
Quality Monitoring Stations under the Contract
|
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 proposes to
use a direct reading dust meter to measure 1-hr TSP levels on an ad hoc basis,
he shall submit sufficient information to the IEC to prove that the instrument
is capable of achieving a comparable result as that the High Volume Sampler
(HVS) and may be used for the 1-hr sampling. The instrument should also be calibrated
regularly and the 1-hr sampling shall be checked periodically by the HVS to
check the validity and accuracy of the results measured by the direct reading
method.
3.5.6
According to the Project EM&A Manual,
wind data monitoring equipment shall also be provided and set up for logging
wind speed and wind direction near the dust monitoring locations. The equipment installation location shall
be proposed by the ET and agreed with the IEC. For
installation and operation of wind data monitoring equipment, the following
points shall be observed:
(i)
the wind sensors should
be installed on masts at an elevated level 10 m above ground so that they are
clear of obstructions or turbulence caused by the buildings;
(ii)
the wind data should be
captured by a data logger to be down-loaded for processing at least once a
month;
(iii)
the wind data monitoring
equipment should be re-calibrated at least once every six months; and
(iv)
wind direction should be divided into 16 sectors of 22.5 degrees each.
3.6.1
The baseline monitoring
results formed the basis for determining the air quality criteria for the
impact monitoring. The ET shall compare the impact monitoring results with air
quality criteria set up for 24-hour TSP and 1-hour TSP. Based on results of the approved
Baseline Monitoring Report of HyD Contract
HY/2012/08, the Action and Limit Levels for impact dust monitoring are shown in
Tables
3-3.
Table
3-3 Action
and Limit Levels for Impact Air Quality Monitoring
|
Air Quality Monitoring Stations
|
24-hour TSP (μg/m3)
|
1-hour TSP (μg/m3)
|
|
Action Level
|
Limit Level
|
Action Level
|
Limit Level
|
|
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.
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 L&V 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 refer to the Monthly EM&A
Reports of the Contract HY /2012 /08 (March
2015).
4.3.1
According to the air quality monitoring
result provided by Contract HY/2012/08, no exceedances in 1-hour and 24-hour
TSP were recorded in the Reporting Period.
No Notification on Exceedances (NOEs) was issued by the ET of Contract
HY/2012/08. The summary of air
quality exceedance in the Reporting Period is shown in Table 4-1.
Table 4-1 Summary
of Air Quality Monitoring Exceedance
|
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.
5.2.1
In the Reporting Period,
inspections for implementation status of mitigation measures for the Pitcher
Plants were carried out by the ET on 3rd, 10th, 17th
, 24th and 31st March 2015.
5.2.2
During weekly site
inspection at the nursery zone, the transplanted Pitcher Plants observation overall should be in fair
condition. No construction
activities were conducted nearby the nursery zone. To conclusion that the Pitcher Plants has been
protected properly. Moreover, no repair or
maintenance is required for the scaffold structure and chain link fence.
5.2.3
Random checking was performed
for the protected areas Zones 8, 9 and 10 during the weekly site inspections. The Pitcher Plants at the protected areas was protected properly and the growth also was in normal
condition. Moreover, no
construction activities were carried out nearby the protected areas of Pitcher
Plants. 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:
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 3rd,
10th, 17th, 24th and 31st
March 2015. Each inspection observed that buffer zone
has maintained between the working area and the Grave. The nearby areas were cleanness and no
construction materials or equipment was stored to nearby it.
6.2.2
Mitigation measures
undertaken by the Contractor has fully implemented the EM&A Manual
requirements accordingly.
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 6th,
13th, 20th and 27th March 2015 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.
8.2.1
In the Reporting Period, landfill gas monitoring was conducted at the
construction of Retaining Wall B and
Retaining Wall F and the locations are illustrated in Appendix E. A
BIOGAS 5000 gas analysis was used for the landfill gas monitoring and the valid
calibration certificate is presented in Appendix H.
8.2.2
There were a total of 26 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%
|
0.2%
|
0%
|
0.2%
|
|
Oxygen
|
<19%
|
<18%
|
21.1%
|
21.2%
|
21.1%
|
21.2%
|
|
Carbon Dioxide
|
>0.5%
|
>1.5%
|
0%
|
0.2%
|
0%
|
0.2%
|
8.2.3
The measurement results
shown that slightly methane concentration was detected and oxygen concentration
measured was over 21.1% and Carbon Dioxide was between 0 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)
|
13.473
|
-
|
|
Reused in other
Projects (Inert) (`000m3)
|
26.648
|
HY/2012/08
|
|
Disposal as Public
Fill (Inert) (`000m3)
|
2.042
|
Tuen Mum Area 38
|
Table 9-2 Summary
of Quantities of C&D Wastes
|
Type of Waste
|
Quantity
|
Disposal Location
|
|
|
0
|
-
|
|
Recycled
Paper / Cardboard Packing (`000kg)
|
0.05
|
-
|
|
Recycled
Plastic (`000kg)
|
0
|
-
|
|
Chemical
Wastes (`000kg)
|
0
|
-
|
|
General
Refuses (`000m3)
|
0.01
|
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 3rd, 10th, 17th,
24th
and 31st
March 2015. No non-compliance was noted but 10 observations and 4 reminders were recorded
during the 5 occasions of site
inspection. Moreover, ENPO/IEC
has attended joint site inspection on 31 March 2015.
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
|
|
3 March 2015
|
Ÿ
Dusty haul road was observed near the retaining wall works area. The
contractor should provide water spraying at those area to minimize dust
generation and make sure the frequency of water spraying comply with the EP
requirement.
|
Ÿ Water spraying of dust mitigation
measures has been provided and no dust emission observed was generated from the
vehicles passing through haul road.
|
|
|
Ÿ Ponding water cumulated in the
site was observed. To prevent mosquito breeding, the contractor was reminded
to cleanup.
|
Ÿ Ponding water has been removed
before site inspection on 10 March 2015.
|
|
|
Ÿ It was reminded that dust
mitigation measures should implement to reduce construction dust emission
during rock breaking and excavating activities at the dry season.
|
Ÿ Not required for reminder.
|
|
10 March 2015
|
Ÿ Drilling
work was observed to conduct near the public areas, extra barrier or hoarding
should be provided to reduce noise impact.
|
Ÿ
During site inspection on 17
March 2015, drill rig has relocated far from the public area. No any noisy construction activities
observed to conduct near the public area.
|
|
|
Ÿ Mud/soil trails were observed at
the site exit. The contractor should provide wheel washing facilities at all
construction site exit to make sure all the vehicles leaving from site is
clean.
|
Ÿ No mud/soil trails were observed
at the site exit during site inspection 17 March 2015. The deficiency has rectified.
|
|
|
Ÿ It was reminded that the
contractor should display all the EP and discharge license at all the site
entrance.
|
Ÿ Not required for reminder.
|
|
|
Ÿ As a reminder, dust mitigation
measures should be implemented to minimize dust impact as came form the dust
materials stockpile, haul roads and construction activities during the dry
and windy season
|
Ÿ Not required for reminder.
|
|
17 March 2015
|
Ÿ
No vaild EP and discharge license was displayed at the site entrance.
The contractor strongly reminded that the EP and all relevant licenses shall
display at site entrance.
|
Ÿ
Vaild EP and discharge license has displayed at site entrance
|
|
|
Ÿ
Stockpile without cover was observed. The contractor shall provide proper dust mitigation measures
to reduce dust generation.
|
Ÿ The stockpile has removed and no
dust generation was observed in this area during the inspection on 31 March
2015.
|
|
|
Ÿ Dust generation observed during
loading and unloading from truck. Water spraying shall be provide to reduce
dust generation.
|
Ÿ Dust generation during loading and unload
was not observed. Addition, Water spraying to reduce dust
generation from haul road was observed during site inspection 24 March 2015.
|
|
|
Ÿ Earth bund or temporary drainage
system is reminded installation to prevent the surface run-off damage the
nursery zone.
|
Ÿ Temporary barriers has provided
at the site boundary.
|
|
24 March 2015
|
Ÿ Muddy water observed near site
boundary. Temporary drain channel should be provide to divert the muddy
surface run-off to the de-silting facilities and prevent mosquito breeding
|
Ÿ To follow up and report the next coming
month
|
|
|
Ÿ Oil drum without drip tray was
observed. The contractor should provide drip tray underneath.
|
Ÿ Underneath oil drum, drip tray has
provided to prevent land contamination.
|
|
|
Ÿ It was reminded that stockpiles
located within the site area should provide proper dust mitigation measures
to prevent dust generation.
|
Ÿ Not required for reminder.
|
|
31 March 2015
|
Ÿ No environmental issue was
observed during the site inspection
|
Ÿ NA
|
10.1.4
No
outstanding deficiency was remained to be rectified in previous Reporting
Period.
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
In the upcoming wet
season, muddy water or other water pollutants from site
surface runoff into the public areas will be key environment issue. Water
quality mitigation measures to prevent surface runoff into public areas should
be paid on special attention.
10.1.6
Furthermore,
air quality mitigation measures such as watering of site area for 12 times per day
and covering of exposed slopes should be implemented to reduce construction
dust impact as recommended in the EMIS.
10.1.7
Moreover, good practice for daily
housekeeping is reminded. Addition, clean-up frequency of the waste skips and
wastewater treatment system should be increased to ensure these facilities
functional and effective.
11.1.1
In the Reporting Period, no environmental complaint,
summons and prosecution was received For the Contract. Moreover, no exceedance of the
environmental performance limit (Action and Limit Levels) was recorded for air
quality monitoring. 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
|
|
March 2015
|
Air Quality - 1-hr TSP
|
Action Level
|
0
|
4
|
4
|
|
Limit Level
|
0
|
0
|
0
|
|
Air Quality - 24-hr TSP
|
Action Level
|
0
|
0
|
0
|
|
Limit Level
|
0
|
0
|
0
|
Table 11-2 Statistical Summary of
Environmental Complaints
|
Reporting Period
|
Environmental
Complaint Statistics
|
|
Frequency
|
Cumulative
|
Complaint Nature
|
|
Air
|
Noise
|
Water
|
|
March 2015
|
0
|
0
|
NA
|
NA
|
NA
|
Table 11-3 Statistical Summary of
Environmental Summons
|
Reporting Period
|
Environmental
Summons Statistics
|
|
Frequency
|
Cumulative
|
Complaint Nature
|
|
Air
|
Noise
|
Water
|
|
March 2015
|
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
|
|
March 2015
|
0
|
0
|
NA
|
NA
|
NA
|
11.1.2
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
|
· 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 to Slope A, B, C, D, E, F, RW_A and
Upgrading Works
Ÿ
Toll Plaza Decking TD1, TD2
Ÿ
Retaining Structure RW_B-Section 1
Ÿ
Instrumentation and Monitoring
Ÿ
Site Clearance
Ÿ
Bridge TD1,TD2, Bridge G1, G2,Bridge H1&
Footbridge
Ÿ
Tree Felling
Ÿ
TTA
Ÿ
Construction of Culvert 1-Stage 4 & Conforming
design
Ÿ
Natural terrain hazard mitigation measures
Ÿ
Vehicular Underpass TN-01
Ÿ
Vehicular Underpass TN-1 (Drill and Break)
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 quality impact due from 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 5th
monthly EM&A report presenting the monitoring results and inspection
findings for the period of 1 to 31 March 2015.
13.1.2
No air quality monitoring including 1-hour
and 24-hour TSP exceedance was recorded in the Reporting Period. Although air quality monitoring result complied with the performance
criteria, the Contractor was reminded to fully implement the dust control
measures.
13.1.3
In 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 if the existing condition
compliance with the intended aims of the mitigation measures. Most of the landscape works such as
planting was not yet commenced.
13.1.5
Weekly site inspection
and random checking respectively were performed for the transplanted
Pitcher Plants in the nursery site and protected Zones 8 to 10. No repair or maintenance is required the scaffold
structure or chain link fence. Moreover,
no construction activities were conducted nearby
the nursery zone and the protected areas of
Pitcher Plants. The growths of the transplanted pitcher plant and the Pitcher Plants as retained at the
protected areas were in fair and normal.
13.1.6
Landfill gas monitoring was conducted at the
construction of Retaining Wall B and Retaining Wall F by the Safety Officer. The monitoring results shown no
exceedances were triggered.
13.1.7
No documented a complaint, notification of
summons or successful prosecution is received by the Contract.
13.1.8
Joint site
inspection by the RE, ET and Contractor was carried out on 3rd,
10th, 17th, 24th and 31st March 2015. Moreover, ENPO/IEC attended joint site inspection on 31 March 2015. No
non-compliance was recorded during the site inspection, 10 observations and 4 reminders
were recorded during site inspections.
13.1.9
For cultural heritage,
the buffer zone between the working area
and the Grave was observed and no construction material or equipment was stored
nearby.
13.2.1
In upcoming wet season, muddy water or other water pollutants from site surface runoff into the public
areas will be key environment issue. Water
quality mitigation measures to prevent surface runoff into public areas should
be paid on special attention.
13.2.2
Furthermore,
air quality mitigation measures such as watering of site area for 12 times per day
and covering of exposed slopes should be implemented to reduce construction
dust impact as recommended in the EMIS.
13.2.3
It was reminded
that good housekeeping practice should be maintained. Mosquito control measures should be properly
implemented to prevent mosquito breeding on site.
