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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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3rd Quarterly Environmental
Monitoring & Audit Summary Report ¡V (May to July 2015) |
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Prepared
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CRBC
and Kaden Joint Venture |
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Quality Index |
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Date |
Reference No. |
Prepared By |
Certified By |
10 September 2015 |
TCS00715/14/600/R0120v2 |
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Ben
Tam (Environmental Consultant) |
T.W. Tam (Environmental Team Leader) |
This
report has been prepared by Action-United Environmental Services &
Consulting with all reasonable skill, care and diligence within the terms of
the Agreement with the client, incorporating our General Terms and Conditions
of Business and taking account of the resources devoted to it by agreement
with the client. We disclaim any responsibility to the client and others in
respect of any matters outside the scope of the above. This report is
confidential to the client and we accept no responsibility of whatsoever
nature to third parties to whom this report, or any part thereof, is made
known. Any such party relies upon the report at their own risk. |
Executive Summary
ES.01. This is the 3rd Quarterly EM&A Summary Report
for the ¡§Tuen Mun - Chek Lap Kok Link - Northern
Connection Toll Plaza and Associated Works¡¨ under Environmental Permit No. EP-354/2009/C (hereinafter ¡¥¡¥the EP¡¦¡¦), covering the period from 1 May to 31 July 2015 (hereinafter ¡§Reporting Period¡¨).
Environmental Monitoring and
Audit Activities
ES.02. Environmental monitoring activities under
the EM&A programme in the Reporting Period are
summarized in the following table.
Environmental Aspect |
Environmental
Monitoring Parameters / Inspection |
Total Occasions |
Air Quality |
1-hour TSP |
465 |
24-hour TSP |
155 |
|
Cultural heritage inspection |
Grave G1 |
13 |
Landfill Gas Monitoring |
Oxygen; Methane & Carbon Dioxide |
75 days |
Landscape &Visual |
Landscape
&Visual Monitoring |
13 |
Joint Site Inspection / Audit |
IEC, ET, the Contractor and RE joint site Environmental Inspection and Auditing |
13 |
Breaches
of Action/Limit levels
ES.03.
In the Reporting Period, no exceedance was
recorded for the measured parameter under the Contract. The summary of breach
of monitoring 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 |
|
Landfill Gas
Monitoring |
Oxygen |
0 |
0 |
0 |
0 |
0 |
Methane |
0 |
0 |
0 |
0 |
0 |
|
Carbon
Dioxide |
0 |
0 |
0 |
0 |
0 |
Environmental
Complaint
ES.04. In the
Reporting Period, one (1) environmental complaint was received from DSD on 28
July 2015 regarding to milky water observed from drainage outlet to Butterfly
Beach. Joint site inspection was
carried out by the EPD, AECOM and CKJV on 29 July 2015 and no milky/ muddy
water was observed. Investigation
report for the complaint has been conducted by the Contractor and submitted to
the EPD and no comment was received.
Notification of Summons and Successful Prosecutions
ES.05. No
environmental summons or successful prosecutions were recorded in the Reporting
Period.
Reporting Changes
ES.06. No
reporting changes were made in the Reporting Period.
Future key issues
ES.07. During wet
season, muddy water or other water pollutants from site surface runoff into the
public areas will be key environment issue. Water quality mitigation measures to
prevent surface runoff into public areas should be paid on special attention.
ES.08. 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.
ES.09. It was
reminded that good housekeeping practice should be maintained. Mosquito control measures such as
removal of stagnant water after rain should be properly implemented to prevent
mosquito breeding on site.
Table of Contents
2 Contract
Organization and Construction progress
2.3 Summary of Environmental Submissions
3 Summary of Impact
monitoring Requirements
3.6 Derivation
of Action/Limit (A/L) Levels
3.7 Other
Environmental Aspects
4.2 Summary
of Monitoring Results
4.3 Action
and Limit (A/L) Levels Exceedance
7.2 Landscape
and Visual Inspection
8 Landfill Gas Hazard
Monitoring
8.2 Landfill
Gas Monitoring Result
9.2 Records
of Waste Quantities
11 Environmental Complaint and
Non-compliance
11.1 Environmental
Complaint, Summons and Prosecution
12 Implementation Status of
Mitigation Measures
13 Conclusions and Recommendations
List
of tables
Table 2-1 Status
of Environmental Licenses and Permits of the Contracts
Table 3-1 Air
Quality Monitoring Stations under the Contract
Table 3-2 Enhanced
TSP Monitoring Plan ¡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 in Reporting Period
Table 9-1 Summary
of Quantities of Inert C&D Materials
Table 9-2 Summary
of Quantities of C&D Wastes
Table 10-1 Site
Observations for the Contract for the Reporting Period
Table 10-2 Summary
of Reminders/Observations of Site Inspection
Table 11-1 Statistical
Summary of Environmental Exceedance
Table 11-2 Statistical
Summary of Environmental Complaints
Table 11-3 Statistical
Summary of Environmental Summons
Table 11-4 Statistical
Summary of Environmental Prosecution
Table 12-1 Environmental
Mitigation Measures
List of Annexes
Appendix A Layout plan of the Project
Appendix B Layout plan of the Contract
Appendix C Environmental Management Organization Chart
Appendix D Master Construction Programme for
Appendix E Monitoring Locations / Sensitive Receivers for the Contract
Appendix F Event and Action Plan
Appendix G Landfill Gas Monitoring
Graphical Plots
Appendix H Waste Flow Table
Appendix I Implementation Schedule for Environmental
Mitigation Measures
1.1.1. CRBC-Kaden
Joint Venture (hereafter ¡§CRBC-Kaden JV¡¨) is commissioned by the
Highways Department (HyD) as the Main Contractor of
the Contract No. HY/2013/12 ¡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). The TM-CLK Link
Project is a designated project under Environmental Permit number EP-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.
Action-United Environmental Services & Consulting has been commissioned as an Independent ET to implement the
relevant EM&A program in accordance
with the approved EM&A Manual, as well as the associated duties.
1.1.4.
This is the 3rd
Quarterly EM&A Summary Report covering the period
from 1 May
to 31 July 2015.
1.2.1
The Monthly Environmental Monitoring and
Audit (EM&A) Report is structured into the following sections:-
Section 1 Introduction
Section 2 Contract
Organization and Construction Progress
Section 3 Summary
of Impact Monitoring Requirements
Section 4 Air
Quality Monitoring
Section 5 Ecology
Monitoring
Section 6 Cultural
Heritage
Section 7 Landscape
and Visual
Section 8 Landfill
gas hazard Monitoring
Section 9 Waste
Management
Section 10 Site Inspections
Section 11 Environmental
Complaints and Non-Compliance
Section 12 Implementation
Status of Mitigation Measures
Section 13 Conclusions
and Recommendations
2.1.1
The Contract organization and contact details
of key personnel are shown in Appendix C.
2.2.1
In the Reporting Period, the major
construction activity conducted under the Contract is summarized in below. Moreover, the master construction
program is enclosed in Appendix D.
May 2015
Instrumentation and Monitoring
Site Formation to Slope A, B, C, D, E, TP_F and
Upgrading Works
Toll Plaza Decking TD1, TD2
Toll Plaza Footbridge-Section 1
Retaining Structure RW_B-Section 1
Bridge G1, G2,Bridge H1
Culvert 1 (TBM) ¡V Stage 4
Vehicular Underpass TN-01
Natural Terrain Hazard Mitigation Measures
Site Clearance
Tree Felling
June 2015
Instrumentation and Monitoring
Site Formation to Slope A, B, C, D, E, TP_F and
Upgrading Works
Toll Plaza Decking TD1, TD2
Toll Plaza Footbridge-Section 1
Retaining Structure RW_B-Section 1
Bridge G1, G2,Bridge H1
Culvert 1 (TBM) ¡V Stage 4
Vehicular Underpass TN-01
Natural Terrain Hazard Mitigation Measures
Road and Drainage Work at Lung Fu Road Roundabout
Site Clearance
Tree Felling
July 2015
Instrumentation and Monitoring
Site Formation to Slope C, D, E, TP_F and Upgrading
Works
Toll Plaza Decking TD1, TD2
Toll Plaza Footbridge-Section 1
Retaining Structure RW_B-Section 1
Bridge G1, G2,Bridge H1
Culvert 1 (TBM) ¡V Stage 4
Vehicular Underpass TN-01
Natural Terrain Hazard Mitigation Measures
Road and Drainage Work at Lung Fu Road Roundabout
Site Clearance
Tree Felling
2.3.1
In according to the EP, the required documents
have submitted to EPD for retention which 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
the relevant permits, licenses, and/or notifications on environmental protection
for the Project of each contracts are presented in Table 2-1.
Table 2-1 Status
of Environmental Licenses and Permits of the Contracts
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 Multiple
Task |
24-04-2015 |
GW-RW0225-15 |
13-05-2015 |
04-11-2015 |
8 |
CNP for MH5 |
05-05-2015 |
GW-RW0226-15 |
18-05-2015 |
17-11-2015 |
9 |
Permission to Transplant Pitcher Plant |
15-6-2015 |
(30) in AF CON 11/13 pt.4 |
23-6-2015 |
22-12-2015 |
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 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
The filter paper of 24-hour TSP measurement
shall be determined by HOKLAS accredited laboratory. A high volume sampler in
compliance with the following specifications shall be used for carrying out the
1-hr and 24-hr TSP monitoring:
(i)
0.6-1.7 m3/min (20-60
SCFM) adjustable flow range;
(ii)
equipped with a
timing/control device with +/- 5 minutes accuracy for 24 hours operation;
(iii)
installed with
elapsed-time meter with +/- 2 minutes accuracy for 24 hours operation;
(iv)
capable of providing a
minimum exposed area of 406 cm2 (63 in2);
(v)
flow control accuracy:
+/- 2.5% deviation over 24-hr sampling period;
(vi)
equipped with a shelter
to protect the filter and sampler;
(vii) incorporated with an electronic mass flow rate controller or other
equivalent devices;
(viii) equipped with a flow recorder for continuous monitoring;
(ix)
provided with a peaked
roof inlet;
(x)
equipped with a
manometer;
(xi)
able to hold and seal
the filter paper to the sampler housing in a horizontal position;
(xii) easy to change the filter; and
(xiii) capable of operating
continuously for 24-hr period.
3.5.3
Calibration of dust monitoring equipment
shall be conducted by the ET upon installation and in bi-monthly intervals
during construction phase. The
transfer standard shall be traceable to the internationally recognized primary
standard and be calibrated annually. The calibration data shall be properly
documented for future reference by concerned parties, such as the IEC. All the
data shall be converted into standard temperature and pressure condition.
3.5.4
The filter paper of 24-hour TSP measurement
shall be determined by HOKLAS accredited laboratory.
3.5.5
If the ET proposes to use a direct reading
dust meter to measure 1-hr TSP levels on an ad hoc basis, he shall submit
sufficient information to the IEC to prove that the instrument is capable of
achieving a comparable result as that the High Volume Sampler (HVS) and may be
used for the 1-hr sampling. The
instrument should also be calibrated regularly and the 1-hr sampling shall be
checked periodically by the HVS to check the validity and accuracy of the
results measured by the direct reading method.
3.5.6
According to the Project EM&A Manual,
wind data monitoring equipment shall also be provided and set up for logging
wind speed and wind direction near the dust monitoring locations. The equipment installation location
shall be proposed by the ET and agreed with the IEC. For installation and operation of wind
data monitoring equipment, the following points shall be observed:
(i)
the wind sensors should
be installed on masts at an elevated level 10 m above ground so that they are
clear of obstructions or turbulence caused by the buildings;
(ii)
the wind data should be
captured by a data logger to be down-loaded for processing at least once a
month;
(iii)
the wind data monitoring
equipment should be re-calibrated at least once every six months; and
(iv)
wind direction should be
divided into 16 sectors of 22.5 degrees each.
3.6.1
The baseline monitoring results formed the
basis for determining the air quality criteria for the impact monitoring. The
ET shall compare the impact monitoring results with air quality criteria set up
for 24-hour TSP and 1-hour TSP.
Based on results of the approved Baseline Monitoring Report of HyD Contract HY/2012/08, the Action and Limit Levels for
impact dust monitoring are shown in Tables 3-3.
Table 3-3 Action and Limit Levels for Impact Air
Quality Monitoring
Air Quality Monitoring Stations |
24-hour TSP (£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.
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 (May 2015, June 2015 and July 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 at least once every week to report it growth and protection
measure
situation shall be conducted during construction period.
5.2.1
In the Reporting Period, inspections for
implementation status of mitigation measures for the Pitcher Plants were
carried out by the ET on 5th, 12th, 19th ,26th
May 2015 and 2nd, 9th, 16th, 23rd,
30th June 2015 and 7th, 14th, 21st,
28th July 2015. Trial
transplantation of pitcher plant from the nursery site to final receptor site
was carried out on 15 April 2015 and transplantation of remaining 95% was
schedule in September 2015 tentatively.
5.2.2
During weekly site inspection at the nursery
zone, the
transplanted Pitcher Plants were observed in fair to poor
condition. No construction
activities were conducted nearby the nursery zone and the Pitcher Plants were protected properly. Moreover, no repair or
maintenance is required for the protected facilities such as 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 fair to poor 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:
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, site inspection for
the Grave G1 was undertaken on 5th, 12th, 19th,
26th May 2015 and 2nd, 9th, 16th,
23rd, 30th June 2015 and 7th, 14th,
21st, 28th July 2015. During site inspection, buffer zone
between the working area and the Grave was maintained and no
construction material or equipment was stored nearby the Grave.
6.2.2
Mitigation measures undertaken by the
Contractor has fully implemented the EM&A Manual requirements.
7.1.1
According to EM&A Manual requirements,
monitoring of Contractor¡¦s operations during construction period to report on
Contractor¡¦s compliance should be carried out on weekly basis. Measure to mitigate landscape and visual
impact during construction should be checked and monitored by a Registered
Landscape Architect to ensure compliance with the intended aims of the
mitigation measures. Moreover, the
progress of the engineering works shall be regularly reviewed on site to
identify the earliest practical opportunities for the landscape works to be
undertaken.
7.2.1
In the Reporting Period, site inspection for
landscape and visual mitigation measures was undertaken by the Registered
Landscape Architect on 8th,
15th, 22nd, 29th May 2015 and 5th, 12th,
19th, 26th June 2015 and 3rd, 10th,
17th, 24th, 31st July 2015.
7.2.2
Most of the landscape works such as planting
was not yet commenced. The detailed
inspection checklists can be referred to the Monthly EM&A Reports
(May 2015, June 2015and July 2015) of the contract.
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 or other
appropriately qualified person.
8.1.6
To ensure the accuracy of the monitoring
data, zeroing of the gas analyser shall be undertaken
at the start of each day¡¦s monitoring.
As part of the QA/QC, calibration of the gas analyser
shall be conducted at least once every two weeks according to the specification
of the manufacturer¡¦s operation manual.
8.2.1
In the Reporting Period, landfill gas
monitoring was conducted at the construction of Retaining Wall B and Retaining
Wall F and the locations are illustrated in Appendix E. A BIOGAS 5000 gas analyser was used for the landfill gas monitoring.
8.2.2
There were total 75 workings days monitoring were carried by the Safety Officer or
an approved and qualified persons in this reporting period. Table
8-1 is summarized landfill gas measurement results. Moreover, graphical plot are attached in
Appendix G.
Table 8-1 Summary
of Landfill Gas Measurement Results in Reporting Period
Landfill Gas Parameter |
Action
Level |
Limit
Level |
Detectable at Retaining Wall B |
Detectable at Retaining Wall F |
||
Min |
Max |
Min |
Max |
|||
Methane |
>10% LEL (>0.5%
v/v) |
>20% LEL (>1% v/v) |
0% |
0.2% |
0% |
0.2% |
Oxygen |
<19% |
<18% |
21.0% |
21.2% |
21.0% |
21.2% |
Carbon Dioxide |
>0.5% |
>1.5% |
0% |
0.2% |
0% |
0.2% |
8.2.3
The measurement results shown that slightly
methane concentration was detected and all oxygen concentration were over 21.0% and Carbon Dioxide was between 0 and 0.2
%. No corrective action was
required accordingly.
9.1.1
Waste management was carried out by an
on-site Environmental Officer or an Environmental Supervisor from time to time.
9.2.1
All types of waste arising from the
construction work are classified into the following:
l Construction
& Demolition (C&D) Material;
l Chemical
Waste;
l General
Refuse; and
l Excavated
Soil.
9.2.2
Whenever possible, materials were reused
on-site as far as practicable. The
quantities of waste for disposal in the Reporting Period are summarized in Tables
9-1 and 9-2 and the Waste Flow Table is presented in Appendix H.
Table 9-1 Summary
of Quantities of Inert C&D Materials
Type of Waste |
Quantity |
Disposal
Location |
||
May 15 |
Jun 15 |
Jul 15 |
||
Reused in this
Project (Inert) (in '000 m3) |
4.626 |
17.48 |
19.216 |
- |
Reused in other
Projects (Inert) (in '000 m3) |
18.857 |
9.577 |
9.037 |
HY/2012/08 |
Disposal as Public
Fill (Inert) (in '000 m3) |
7.024 |
4.234 |
5.668 |
Tuen Mum Area 38 |
Table 9-2 Summary
of Quantities of C&D Wastes
Type of Waste |
Quantity |
Disposal Location |
||
May 15 |
Jun 15 |
Jul 15 |
||
Recycled Metal (in '000kg) |
0 |
0 |
0 |
- |
Recycled
Paper / Cardboard Packing (in '000kg) |
0 |
0 |
0 |
- |
Recycled
Plastic (in '000kg) |
0 |
0 |
0 |
- |
Chemical
Wastes (in '000kg) |
0 |
0 |
0 |
- |
General
Refuses (in '000m3) |
0.04 |
0.022 |
0.1 |
WENT |
9.2.3
To control the site performance on waste management, the
Contractor shall ensure that all solid and liquid waste management works are
fully in compliance with the relevant license/permit requirements, such as the
effluent discharge license and the chemical waste producer registration. The Contractor is also reminded to
implement the recommended environmental mitigation measures according to the Environmental Monitoring and Audit
Manual.
10.1.1
According to the approved EM&A Manual,
the environmental site inspection shall be formulation by ET Leader. Weekly environmental site inspections should
carry out to confirm the environmental performance.
10.1.2
During
the Reporting Period, 13
events of the joint site inspections were undertaken to evaluate the site
environmental performance. The
summaries of the findings during site inspection are presented in Tables
10-1 and 10-2.
Table
10-1 Site Observations for the Contract for
the Reporting Period
Date |
Findings
/ Deficiencies |
Follow-Up
Status |
5 May 2015 |
Stagnant water cummlated inside the lifting eyes of conrete block was
observed, the Contractor should fill the lifting eyes with sand to prevent mosquito breeding |
Lifting eyes were filled with
sand to prevent stagnant water. |
12 May 2015 |
Turbid effluent was observed from
the wastewater treatment facilities, the Contractor was reminded to clean the
treatment facilities regularly to ensure the discharge complies with the
discharge licenses standard. |
The treatment facilities has been cleaned and no turbid discharge was
observed from the site. |
Earth bund or sand bags should
been erected at the surrounding of site boundary to ensure the surface
run-off divert to de-silting facilities for treatment. |
Sand bages were provided to divert
the surface runoff. |
|
19 May 2015 |
Soil and mud was observed inside the u-channel, the Contractor should
clean up the soil to prevent muddy water discharge from site. (MH5) |
Sand bags were provided and soil cummualted inside the u-channel was
cleaned. |
Stagnant water was cumulated on site after rainstorm, the Contractor was
reminded to remove the stagnant water after rain to prevent mosquito
breeding. |
Not required for reminder. |
|
26 May 2015 |
Earth bund should be provided to
divert the surface runoff to the de-silting facilities for treatment before
discharge. (Portal X-2) |
Earth bund was provided to divert the
surface runoff. |
Earth bund should be provided to
divert the surface runoff to the de-silting facilities for treatment before
discharge. (Works area near Pillar Point Fire station) |
Sand bags were provided at the site
exit to prevent site surface runoff discharged in to the public area. |
|
Stagnant water was cumulated on site after rainstorm, the Contractor was
reminded to remove the stagnant water after rain to prevent mosquito
breeding. |
Not required for reminder. |
|
2 June 2015 |
Stagnant water cumulated inside
the drip tray was observed. The contractor should remove the water. |
Stagnant water cumulated inside
the drip tray was removed. |
Turbid water discharged from site
was observed. The contractor should treat the discharge water to comply with
the discharge license requirement before discharge. |
No turbid water discharge from
site. |
|
9 June 2015 |
Construction dust emitted from
rock breaking and drilling activities. Water spraying is required to prevent
air quality impact. |
Water spraying was provided to
minimize dust generation. |
Soil and mud trails was observed
at the site entrence.The contractor should clean up the trails and maintain
the public area near the site is clean and tidy. |
Sand and mud trails at the site
exit was cleaned. |
|
General refuse scattered near the
waste skip was observed. Housekeeping should be improved to maintain the site
is clean and tidy |
General refuse scattered near the
waste skip was cleaned. |
|
It was reminded that the grout
mixing area 3 sides and top cover should be provided to prevent dust emission. |
Not requred for reminder. |
|
It was reminded that the sludge
in the sump pit should be cleaned frequently to maintain the pit is
functional. |
Not requred for reminder. |
|
16 June 2015 |
Direct discharge was observed
near gate 2. The contractor should divert all the site discharge to the
de-silting facilities before discharge from site. |
No direct discharge was observed near gate 2. |
It was reminded that water
spraying should be provided when undertaking dusty activities such as
breaking or drilling to reduce dust generation. (Slope E). |
Not requred for reminder. |
|
23 June 2015 |
Turbid water discharged into the
storm water drainage was observed. The contractor should treat the water
before discharge. (Near gate 2 & retaining wall F) |
No turbid water discharge was
observed. |
Chemical containers without drip
tray was observed. The contractor should provide drip tray for chemical
container storage on site to prevent leakage . (Portion X-2) |
Chemical containers without drip tray
were removed to the chemical storage area for disposal. |
|
It was reminded that cumulated
C&D and general waste should be cleaned more frequently to maintain the
site clean and tidy. |
Not requred for reminder. |
|
It was reminded that stagnant
water cumulated inside the drip tray after the rainstorm should be cleaned. |
Not requred for reminder. |
|
30 June 2015 |
No adverse environmental issue
was observed. |
NA |
.7 July 2015 |
Stockpile of more than 20 bags
cememt was observed and the Contractor should be covered with tarpaulin
sheets. |
The stockpile of cement bags was
covered with tarpaulin sheets. |
Oil leakage from the backhoe was
observed. The Contractor should clean immediately to
prevent further contamination. |
The oil stain was removed and no
further leakage was observed. |
|
It was reminded that stagnant
water cummulated on site should be cleaned to prevent mosquito breeding. |
Not requred for reminder. |
|
It was reminded that all vehicles
should using the wheel washing facilities before leaving from site. |
Not requred for reminder. |
|
14 July 2015 |
Stagnant water direct pumping
into the storm water drainage was observed. The Contractor should divert all the site
stagnant water to the de-silting facilities before discharge from site. |
The direct discharge point was blocked
and no turbid water discharge from site was observed. |
21 July 2015 |
Turbid water discharged from site
was observed. The Contractor
should provide de-silting facilities to treat the water to comply with the
discharge licence requirement before discharge from site. |
The direct discharge point was blocked
and no turbid water discharge from site was observed. |
Free standing chemical containers
without drip tray was observed.
The Contractor should provide drip tray for all chemical containers
storage on site to prevent leakage. |
Drip tray was provided for the
chemical containers that storage on site. |
|
28 July 2015 |
No adverse environmental issue
was observed. |
NA |
It was reminded that all the
surface runoff and wastewater should be diverted to the de-silting facilities
and make sure all the discharge water is complied with the discharge license
requirement. |
Not requred for reminder. |
Table 10-2 Summary of Reminders/Observations
of Site Inspection
Reporting Period |
Date of site inspection |
Nos. of findings / reminders |
|
May 2015 |
5th,
12th , 19th and 26th May 2015 |
7 |
Completed |
June 2015 |
2nd,
9th, 16th, 23rd and 30th June 2015 |
13 |
Completed |
July 2015 |
7th,
14th, 21st and 28th July 2015 |
8 |
Completed |
10.1.3
In the
Reporting Period, no non-compliance was recorded,
however, 28 observations/ reminders were
recorded during the site inspections.
Minor deficiencies found
in the weekly site inspection were in general rectified within the specified
deadlines. The environmental
performance of the Project was therefore considered satisfactory.
10.1.4
In the upcoming wet
season, muddy water or other water pollutants from site
surface runoff into the public areas will be key environment issue. Water
quality mitigation measures to prevent surface runoff into public areas should
be paid on special attention.
10.1.5
For waste management, good practice for daily
housekeeping is reminded. Furthermore, clean-up frequency of the waste skips
and wastewater treatment system should be increased to ensure these facilities
functional and effective.
10.1.6
Moreover, good 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
Stagnant water should be removed as
soon as possible after rain to prevent mosquito breeding on site.
11.1.1 For the
Contract, no summons and prosecution were received in the Reporting Period. Moreover, no exceedances of the
environmental performance limit (Action and Limit Level) were recorded. However, one (1) environmental complaint was received and
lodged for the Contract in July 2015. Follow up actions have been undertaking
by the Contractor to resolve the deficiencies. The statistical
summary table of environmental exceedance, complaint, summons and prosecution
is presented in Tables 11-1, 11-2, 11-3 and 11-4.
Table 11-1 Statistical
Summary of Environmental Exceedance
Reporting Period |
Environmental Aspect / Parameter |
Environmental Performance |
Event
Exceedance |
||
Reporting
Period |
Previous
Periods |
Cumulative |
|||
1 May
2015 ¡V 31 July 2015 |
Air Quality - 1-hr TSP |
Action Level |
0 |
4 |
4 |
Limit Level |
0 |
0 |
0 |
||
Air Quality - 24-hr
TSP |
Action Level |
0 |
0 |
0 |
|
Limit Level |
0 |
0 |
0 |
Table 11-2 Statistical
Summary of Environmental Complaints
Reporting Period |
Environmental Complaint Statistics |
||
Frequency |
Cumulative |
Complaint Nature |
|
23 October 2014 ¡V 30 April 2015 |
0 |
0 |
NA |
1 May
2015 ¡V 31 July 2015 |
1 |
1 |
Water |
Table
11-3 Statistical
Summary of Environmental Summons
Reporting Period |
Environmental Complaint Statistics |
||
Frequency |
Cumulative |
Complaint Nature |
|
23 October 2014 ¡V 30 April 2015 |
0 |
0 |
NA |
1 May
2015 ¡V 31 July 2015 |
0 |
0 |
NA |
Table
11-4 Statistical
Summary of Environmental Prosecution
Reporting Period |
Environmental Complaint Statistics |
||
Frequency |
Cumulative |
Complaint Nature |
|
23 October 2014 ¡V 30 April 2015 |
0 |
0 |
NA |
1 May
2015 ¡V 31 July 2015 |
0 |
0 |
NA |
12.1.1
The environmental mitigation measures that
recommended in the Environmental Mitigation and Enhancement Measures
Implementation Schedule (EMIS) for in the Project EM&A Manual covered the
issues of air quality, cultural heritage, ecology, landfill gas hazard, landscape & visual,
noise, water and waste. The
updated EMIS for the Contract is shown in Appendix I.
12.1.2
The Contractor shall implement the required
environmental mitigation measures according to the EM&A Manual as subject
to the site condition. The environmental mitigation measures implemented by the
Contract in this Reporting Period are summarized in Table 12-1 and Appendix I.
Table 12-1 Environmental
Mitigation Measures
Issues |
Environmental Mitigation Measures |
Air Quality |
¡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. |
13.1.1 This is 3rd Quarterly EM&A
report presenting the monitoring results and inspection findings for the
Reporting Period from 1 May 2015 to 30 July 2015.
13.1.2 No air
quality monitoring including 1-hour and 24-hour TSP exceedance was recorded in
the Reporting Period. Although air quality monitoring result complied with the performance
criteria, the Contractor was reminded to fully implement the dust control
measures.
13.1.3 In this
Reporting Period, no noise complaint was
received by RE, the Contractor, ENPO or HyD. No Action Level exceedances were triggered and no NOE or the associated corrective actions were therefore issued.
13.1.4 Site
inspection for landscape and visual was conducted on weekly basis by the
Landscape Architect to ensure if the existing condition compliance with the
intended aims of the mitigation measures.
Most of the landscape works such as planting was not yet commenced.
13.1.5 Site
inspection was performed for the transplanted Pitcher Plants in the nursery
site and protected Zones 8 to 10.
The transplanted Pitcher Plant in nursery site was protected by the
scaffold structure which surrounded by chain link fencing and the protected
Pitcher Plants in Zones 8 to 10 were fenced off by chain link fencing. The condition of the transplanted
pitcher plant was in fair to poor condition. No construction activities were found to
conduct nearby the nursery site and protection zones.
13.1.6 Trial transplantation of pitcher plant from the nursery site to final
receptor site was carried out on 15 April 2015 and a total of 5% of pitcher
plant was transplanted. The
condition of the transplanted pitcher plant will be kept in view.
13.1.7 Landfill
gas monitoring was conducted at the construction of Retaining Wall B and
Retaining Wall F by the Safety Officer.
The monitoring results shown no exceedances were triggered.
13.1.8
In the
Reporting Period, one (1) environmental complaint was received from DSD on 28
July 2015 regarding to milky water observed from drainage outlet to Butterfly
Beach. Joint site inspection was
carried out by the EPD, AECOM and CKJV on 29 July 2015 and no milky/ muddy
water was observed. Investigation
report for the complaint is underway by the ET and it will submit to all
relevant parties.
13.1.9
No notifications of summons, or
successful prosecution were received by the Contractor during the Reporting
Period.
13.1.10During the Reporting Period, 13 events of the joint site inspections were
undertaken to evaluate the site environmental performance. No adverse environmental impacts were observed during the weekly site
inspection and environmental audit of the Reporting Period, indicating the
implemented mitigation measures for air quality, construction noise and water
quality were effective. Minor
deficiencies found in the weekly site inspection were in general rectified
within the specified deadlines. The
environmental performance of the Project was therefore considered satisfactory.
13.1.11For cultural
heritage, the buffer zone between the working area and the Grave was observed and
no construction material or equipment was stored nearby.
13.1.12No documented a
complaint, notification of summons or successful prosecution is received by the
Contract.
13.2.1
During wet season, muddy water or other water pollutants from site surface runoff into the
public areas will be key environment issue. Water
quality mitigation measures prevent surface runoff into the public areas should
be paid on special attention.
13.2.2
Furthermore, air quality
mitigation measures such as watering of site area for 12 times per day and
covering of exposed slopes should be implemented to reduce construction dust
impact as recommended in the EMIS.
13.2.3 Moreover, good practice for daily housekeeping is reminded. Addition,
clean-up frequency of the waste skips and wastewater treatment system should be
increased to ensure these facilities functional and effective.