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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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6th Quarterly Environmental
Monitoring & Audit Summary Report ¡V (February to April 2016) |
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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 |
24 May 2016 |
TCS00715/14/600/R0195v2 |
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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 6th Quarterly EM&A Summary Report
for the ¡§Tuen Mun - Chek Lap Kok Link - Northern
Connection Toll Plaza and Associated Works¡¨ under Environmental Permit No. EP-354/2009/D (hereinafter ¡¥¡¥the EP¡¦¡¦), covering the period from 1 February to 30 April 2016 (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 |
435 |
24-hour TSP |
145 |
|
Cultural heritage inspection |
Grave G1 |
13 |
Landfill Gas Monitoring |
Oxygen; Methane & Carbon Dioxide |
70 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
EPD on 28 April 2016 regarding to dust and smoke emission from a drilling rig
was observed on the slope near Pillar Point, Tuen Mun. Investigation report for the complaint is underway by
the ET and it will submit to all relevant parties.
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. Special attention should be paid on the
water quality mitigation measures to prevent surface runoff flow to public area.
ES.08. Although in 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.
ES.09. 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
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
4.4 Air
Quality Exceedance Investigation
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 Construction Programme
Appendix E Monitoring Locations / Sensitive Receivers for the Contract
Appendix F Event and Action Plan
Appendix G Landfill Gas Monitoring Graphical Plots
Appendix H Waste Flow Table
Appendix I Implementation Schedule for Environmental
Mitigation Measures
1.1.1. CRBC-Kaden
Joint Venture (hereafter ¡§CRBC-Kaden JV¡¨) is commissioned by the
Highways Department (HyD) as the Main Contractor of
the Contract No. HY/2013/12 ¡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-354/2009/D issued on 13 March 2015. The layout Plan of the Project and the Contract are showed in Appendix A and B respectively.
1.1.2.
The construction works
of the Contract mainly include:-
a.
construction of an approximately 5.4 hectares
toll plaza and an associated footbridge;
b.
construction of associated carriageways
including approximately 0.74 kilometre land viaducts,
and an approximately 230 metres vehicular underpass
to connect the toll plaza and the roundabout at Lung Mun
Road/Lung Fu Road;
c.
site formation for the construction of the
toll plaza, including associated slope works and natural terrain hazard
mitigation measures;
d.
modification and realignment of the existing
Lung Mun Road and Lung Fu Road; and
e.
associated
waterworks, drainage, sewerage and landscaping works, etc..
1.1.3.
Action-United Environmental Services & Consulting has been commissioned as an Independent ET to implement the
relevant EM&A program in accordance
with the approved EM&A Manual, as well as the associated duties.
1.1.4.
This is the 6th
Quarterly EM&A Summary Report covering the period
from 1 February
to 30 April 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
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 and 2-month rolling programme is enclosed in Appendix D.
February 2016
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-Section 1
Toll Collector Subway & Associated
Works-Section 1
Bridge
G1, G2, Bridge H1 Section 2
Sewer Culvert 1 (TBM) ¡V Stage 4, Culvert 2 &
Culvert 3 and Existing Culvert
Vehicular Underpass TN-01
Road and Drainage Works for Lung Fu Road Roundabout
March 2016
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
April 2016
Instrumentation and Monitoring
Site Formation ¡V Earthwork on Slope D and E;
surface drainage on slope C, D & E and Portion H;
Toll Plaza Decking TD1 (Portal Beam Construction)
and TD2;
Toll Plaza Footbridge;
Retaining Structure RW_A, RW_B and RW_F;
Toll Collector Subway & Associated Works;
Bridge G1, G2 and Bridge H1;
Sewer Culvert at FC1 and FC2;
Waterproofing and lining at Vehicular Underpass;
Road and Drainage Works at +11mPD, +19mPD and
Portion H.
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 Contract No. HY/2013/12 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 |
Variation of Effluent Discharge License |
22-08-15 |
WT00023973-2016 |
14-03-16 |
N/A |
5 |
Waste Disposal Regulation - Billing Account
for Disposal of Construction Waste |
21-07-2014 |
7020460 |
01-08-2014 |
N/A |
6 |
CNP for Multiple Task |
7-10-2015 |
GW-RW0520-15 |
05-11-2015 |
04-05-2016 |
7 |
CNP for MH5 |
23-10-2015 |
GW-RW0563-15 |
18-11-2015 |
17-05-2016 |
8 |
CNP for Tunnel |
13-11-2015 |
GW-RW0582-15 |
23-11-2015 |
22-05-2016 |
9 |
CNP for falsework erection |
01-02-2016 |
GW-RW0076-16 |
15-02-2016 |
21-04-2016 |
10 |
Extend CNP for Flasework
Erection |
07-04-2016 |
GW-RW0215-16 |
26-04-2016 |
21-06-2016 |
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
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 (February 2016, March 2015 and April 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 at least once every week to report it growth and protection
measure
situation shall be conducted during construction period.
5.2.1
Total 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.
5.2.2
In the Reporting Period, inspections for
implementation status of mitigation measures for the Pitcher Plants were
carried out by the ET on 2nd,
12th, 16th and 23rd February 2016, 1st,
8th, 15th, 22nd and 29th March 2016,
6th, 12th, 19th and 26th April 2016.
5.2.3
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, site inspection for
the Grave G1 was undertaken on 2nd,
12th, 16th and 23rd February 2016, 1st,
8th, 15th, 22nd and 29th March
2016, 6th, 12th, 19th and 26th
April 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
Accordingly, the Contractor has had fully
implemented cultural heritage mitigation measures in accordance with 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 5th,
12th, 19th and 26th February 2016,
4th, 11th,
18th and 25th March 2016, 1st, 8th,
15th, 22nd and 29th April 2016.
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
(February 2016, March 2016 and April 2016) 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 70 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% |
0.1% |
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 all oxygen concentration were over 21.0% and Carbon Dioxide was between 0.1 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 |
||
Feb 16 |
Mar 16 |
Apr 16 |
||
Reused in this
Project (Inert) (in '000 m3) |
7.894 |
16.333 |
15.186 |
- |
Reused in other
Projects (Inert) (in '000 m3) |
5.755 |
6.392 |
4.939 |
• Lam Tei Quarry • Eco Park
K.wah Recycle Facilities • Lung Kwu Tan Tailor Recycled Aggregates • Laintang BCP • TM-CLKL
C2 |
Disposal as Public
Fill (Inert) (in '000 m3) |
1.036 |
0.496 |
0.071 |
Tuen Mum Area 38 |
Table 9-2 Summary
of Quantities of C&D Wastes
Type of Waste |
Quantity |
Disposal Location |
||
Feb 16 |
Mar 16 |
Apr 16 |
||
Recycled Metal (in '000kg) |
0 |
0 |
0 |
- |
Recycled
Paper / Cardboard Packaging (in '000kg) |
0 |
0 |
0 |
Licensed collector |
Recycled
Plastic (in '000kg) |
0 |
0 |
0 |
- |
Chemical
Wastes (in '000kg) |
0 |
0 |
0 |
- |
General
Refuses (in '000m3) |
0.066 |
0.089 |
0.154 |
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 |
2 Feb 2016 |
C&D material scattered on the works area was observed. Housekeeping
should be improved to maintain works area clean and tidy. (Retaining Wall F) |
C&D material was removed and housekeeping was improved. |
It was reminded that stagnant water cumulated under Retaining Wall B
should be drained away as soon as possible or proper mitigation measure
should be applied to prevent mosquito breeding. |
Not required for reminder. |
|
12 Feb 2016 |
As a reminder, water spraying frequency should comply with the EP
requirement. |
Not required for reminder. |
16 Feb 2016 |
No environmental issue was observed during the site
inspection. |
NA |
23 Feb 2016 |
As a reminder, concrete washing water should be
diverted to the de-silting facilities before discharge and the contractor was
reminded to prevent washing water discharge into the public area. (Central
Divider) |
Not required for reminder. |
As a reminder, cut off drain should be installed at
the site exit to prevent site surface run-off or wheel washing water
discharge into public area. Also de-silting facilities should be provided.
(Works area near fire station) |
Not required for reminder. |
|
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. |
|
6 Apr 2016 |
No adverse environmental issue
was observed. |
NA |
12 Apr 2016 |
Turbidity water which after treatment discharged at
the designated discharge point was observed. The contractor should review the
de-silting system and make sure all discharge water from site should comply
with the discharge license requirement. (Behind the site office) |
No turbidity water
discharged from de-silting system was observed. |
19 Apr 2016 |
Tree protection zone should be set up after the chain
link fence is demolished to protect retaining tree. (Behind the site office) |
Not required for reminder. |
26 Apr 2016 |
Dust mitigation measures should be provided for the stockpile storage on
site to prevent dust impact. (Near Retaining Wall F) |
Stockpile without cover was
cleared. |
Table 10-2 Summary of Reminders/Observations
of Site Inspection
Reporting Period |
Date of site inspection |
Nos. of findings / reminders |
|
February 2016 |
2nd, 12th,
16th and 23rd February 2016 |
5 |
Completed |
March 2016 |
1st, 8th, 15th,
22nd and 29th March 2016. |
12 |
Completed |
April 2016 |
6th, 12th,
19th and 26th April 2016 |
3 |
Completed |
10.1.3
In the
Reporting Period, no non-compliance was recorded,
however, 20 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.
Inspection Checklist for Vulnerable to Contaminated Water Discharge
10.1.4
Following to the complaint about
discharge of milky water to Bufferfly Beach on 2 September 2015. The Contractor proposed to carry out
daily inspection of wastewater treatment facilities, concerned discharge
points, drainage inlets and outlets during typhoon or wet season.
10.1.5
In addition, specific inspections
would also be conducted before and after adverse weather to ensure necessary
remedial works would be carried out timely. Should incidental contaminated
water discharge be found at the inlet of the associated drainage system, a
specific inspection of the relevant drainage pipes would be conducted for
traces of deposit, and follow up actions would be taken when necessary.
10.1.6
The daily inpsection for vulnerable
to contaminated water discharge was temporarily suspended during the dry season
and resumed on 5 April 2016. As requested by the EPD, the associated inspection
checklist were presented in the Monthly EM&A Report ¡V April 2016.
11.1.1 In the Reporting Period, no 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. However, one (1) environmental complaint
was received and lodged for the Contract.
Follow up actions have been undertaking by the Contractor to resolve the
deficiencies. The details of complaint are listed below:-
l
28
April 2016 - A complaint was received from the EPD on 28 April 2016. The complainant complained that dust and
smoke emission from a drilling rig was observed on the slope near Pillar Point,
Tuen Mun. It was suspected that the heavy dust was
generated from the construction activities under the Contractor.
11.1.2 During the
complaint investigation work, the Contractor was co-operated with the ET in
providing all the necessary information and assistance for completion of the
investigation. Investigation report
for the complaint is underway by the ET and it will submit to all relevant
parties.
11.1.3 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 February
2016 ¡V 30 April 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 |
|
23 October 2014 ¡V 31 January 2016 |
3 |
3 |
Water (3) |
1
February 2016 ¡V 30 April 2016 |
1 |
4 |
Water (3), Air
(1) |
Table
11-3 Statistical
Summary of Environmental Summons
Reporting Period |
Environmental Complaint Statistics |
||
Frequency |
Cumulative |
Complaint Nature |
|
23 October 2014 ¡V 31 January 2016 |
0 |
0 |
NA |
1
February 2016 ¡V 30 April 2016 |
0 |
0 |
NA |
Table
11-4 Statistical
Summary of Environmental Prosecution
Reporting Period |
Environmental Complaint Statistics |
||
Frequency |
Cumulative |
Complaint Nature |
|
23 October 2014 ¡V 31 January 2016 |
0 |
0 |
NA |
1
February 2016 ¡V 30 April 2016 |
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 6th Quarterly EM&A
report presenting the monitoring results and inspection findings for the
Reporting Period from 1 February to 30 April 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 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 Random checking during
weekly site inspection were performed on 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 Wall B and
Retaining Wall 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
During
the Reporting Period, 13
events of the joint site inspections were undertaken to evaluate the site
environmental performance. No non-compliance of environmental
impacts were observed, indicating the implemented
mitigation measures for air quality, construction noise and water quality were
effective. Minor deficiencies found
in the weekly site inspection were rectified within the specified
deadlines. The environmental
performance of the Project was considered satisfactory.
13.1.10For cultural
heritage, the buffer zone between the working area and the Grave was observed and
no construction material or equipment was stored nearby.
13.1.11In the Reporting
Period, one (1) environmental complaint was received from EPD on 28 April 2016
regarding to dust and smoke emission from a drilling rig was observed on the
slope near Pillar Point, Tuen Mun.
Investigation report for the complaint is underway by the ET and it will submit
to all relevant parties.
13.1.12No
notifications of summons, or successful prosecution were received by the
Contractor during the Reporting Period.
13.2.1 During the wet
season, 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.
13.2.2 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.
13.2.3 Good
practice for daily housekeeping is reminded. Clean-up of waste skips and
wastewater treatment system should be increased to ensure these facilities are
functioned effectively.
13.2.4 Stagnant
water should be removed as soon as possible after rain to prevent mosquito
breeding on site.