TABLE OF CONTENTS
Page
1.1 Project
Organization and Contacts of Key Management
1.3 Summary
of Construction Works
2 Environmental Monitoring and Audit Requirements
2.3 Environmental
Quality Performance Limits (Action/Limit Levels)
2.4 Environmental
Mitigation Measures
5 Advice on the Solid and Liquid Waste Management Status
6 Summary of Exceedances of the Environmental Quality Performance Limit
7 Summary of Complaints, Notifications of Summons and Successful
Prosecutions
8 Comments, recommendations and Conclusions
List of
Tables
Table 1.1 Contact Information of Key Personnel
Table 3.1 Summary of 1-hour TSP
Monitoring Results in the Reporting Period
Table 3.2 Summary of 24-hour
TSP Monitoring Results in the Reporting Period
Table 3.3 Summary of the Number of Exceedances for 1-hr &
24-hr TSP Monitoring
Table 4.1 Summary of Construction Noise Monitoring Results in
the Reporting Period
Table 4.2 Summary of the Number of Monitoring Exceedances for
Construction Noise
Table 5.1 Summary of
Waste Flow Table
Figure 1.1 General
Project Layout Plan
Figure 1.2a-b Locations
of Monitoring Station
List of Appendices
Appendix A Project
Organization Structure
Appendix B Construction
Programme
Appendix C Implementation
Schedule of Environmental Mitigation Measures (EMIS)
Appendix D Summary of Action
and Limit Levels
Appendix E Impact
Air Quality Monitoring Results and their Graphical Presentation
Appendix F Meteorological
Data
Appendix G Impact
Daytime Construction Noise Monitoring Results and their Graphical Presentation
Appendix H Statistics
on Complaints, Notifications of Summons and Successful Prosecutions
EXECUTIVE SUMMARY
The proposed widening of Tolo Highway and Fanling Highway
between Island House Interchange and Fanling (the
Project) is a Designated Project under the Environmental Impact Assessment
Ordinance (Cap. 499) (EIAO). An Environmental Impact Assessment (EIA) Report
(the approved EIA Report) together with an Environmental Monitoring and Audit
(EM&A) Manual (the approved EM&A Manual) were completed and approved
under the EIAO on 14 July 2000 (Register Number: EIA-043/2000).
The objective of the Project “Widening of Tolo
Highway / Fanling Highway between Island House
Interchange and Fanling” is to widen Tolo Highway and Fanling Highway
to dual 4-lane carriageway in order to alleviate the current traffic congestion
problems and to cope with the increasing transport demands to and from the
urban areas and also cross boundary traffic.
The construction works for this Project will be delivered in 2 stages
i.e. Stage 1 (between Island House Interchange and Tai Hang) and Stage 2
(between Tai Hang and Wo Hop Shek Interchange). Stage 2 would be implemented under two
works contracts. Contract No. HY2012/06 “Widening of Fanling Highway –
Tai Hang to Wo Hop Shek Interchange” and the entrusted portion to CEDD under
Contract No. CV/2012/09 ”Liantang/Heung
Yuen Wai Boundary Control Point Site Formation and Infrastructure Works –
Contract 3”. This report focuses on Contract No. HY2012/06 “Widening
of Fanling Highway – Tai Hang to Wo
Hop Shek Interchange” in Stage 2 of the Project only.
Pursuant
to the EP (EP-324/2008/C) Condition 2.7, the Capture Survey Trip Report for Ma
Wat River Northern Meander (Version 2) for the Project was submitted on 24
December 2013 by the Environmental Team (ET) and verified by the Independent
Environmental Checker (IEC) on 6 January 2014.
The
construction phase of the Contract under the EP and the Environmental
Monitoring and Audit (EM&A) programme of the contract commenced on 21 November 2013. The impact
environmental monitoring and audit includes air quality and noise monitoring.
This report documents the
findings of EM&A works conducted in the period between 1 August
to 31 October 2015. As informed by the Contractor, construction
activities in the reporting period were as follows:
- Ground investigation
- Piling works
- Pipe laying
- Retaining wall construction
- Noise barrier
- Excavation
- Backfilling
- Drainage
- Temporary bridge construction
- House construction
- Footbridge demolition
- Bridge construction
Reporting Change
There was no reporting change
required in the reporting period.
Breaches of Action and Limit Levels for Air
Quality
No
exceedance of Action and Limit Level was recorded for 1-hour and 24-hour TSP monitoring
in the reporting period.
Breaches of Action and Limit Levels for Noise
No Action or Limit Level exceedance of construction noise was recorded
in the reporting period. No noise complaints related to 0700 – 1900 hours on
normal weekdays was received and followed by the Environmental Team in the
reporting period.
Complaint, Notification of Summons and
Successful Prosecution
No complaint, notification of summons or successful prosecution was received in the reporting period.
Future Key Issues
Key
issues to be considered in the coming month include:
-
Properly store and label oils and chemicals on site;
-
Chemical, chemical waste and waste management;
-
Collection of construction waste should be carried out regularly;
-
Properly maintain all drainage facilities and wheel washing
facilities on site;
-
Exposed slopes should be covered up properly if no temporary work
will be conducted;
-
Quieter powered mechanical equipment should be used;
-
Suppress dust generated from excavation activities and haul road
traffic; and
-
Tree protective measures for all retained trees should be well
maintained.
1
Introduction
1.1 Project Organization and Contacts of Key Management
1.1.1
The project organization structure is shown in Appendix A. The key
personnel contact names and numbers are summarized in Table 1.1.
Table 1.1 Contact Information of Key Personnel
|
Position |
Name |
Telephone |
Fax |
|
|
ER (Hyder-Arup-Black
& Veatch Joint Venture) |
Chief Resident Engineer |
Edwin
Chung |
6115 0818 |
2638 0950 |
|
IEC (Mott MacDonald Hong Kong Limited) |
Independent Environmental
Checker |
Terence Kong |
2828 5919 |
2827 1823 |
|
Contractor (China State Construction
Engineering (Hong Kong) Limited) |
Environmental Officer |
Michael Tsang |
9277 4956 |
2672 2501 |
|
C C
Chow |
9679 6315 |
2672 2501 |
||
|
ET (AECOM Asia Company Limited) |
ET Leader |
Y W Fung |
3922 9393 |
3922 9797 |
1.2 Programme
1.2.1
The Construction Programme is shown in
Appendix B.
1.3 Summary of Construction Works
1.3.1
Details of the construction works carried out by the Contractor in this
reporting period are listed below:
- Site clearance
- Ground investigation
- Piling works
- Pipe laying
- Retaining wall construction
- Noise barrier
- Excavation
- Backfilling
- Drainage
- Temporary bridge construction
- House construction
- Footbridge demolition
- Bridge construction
1.3.2
The general layout plan of the Project site showing the contract areas
is shown in Figure 1.1.
1.3.3
The environmental mitigation measures implementation schedule are
presented in Appendix C.
2
Environmental Monitoring
and Audit Requirements
2.1 Monitoring Parameters
2.1.1
The updated EM&A Manual has designated 1
air quality monitoring station and 2 noise monitoring stations to monitor
environmental impacts on air quality and noise due to Stage 2 of the Project.
2.1.2
The updated EM&A Manual also requires
environmental site inspections for air quality, noise, water quality, chemical,
waste management, ecology and landscape and visual impacts.
2.2 Monitoring Locations
2.2.1
For air quality monitoring, the monitoring
station was set up at Fanling Government Secondary
School, in accordance with updated EM&A Manual. The location is shown in
Figure 1.2a.
2.2.2
For noise monitoring, the monitoring stations M2 and M3 were set up at
West Tai Wo and Fanling Government Secondary School
respectively in accordance with updated EM&A Manual. Figure 1.2a-b shows
the locations of the monitoring stations.
2.3 Environmental Quality Performance Limits (Action/Limit Levels)
2.3.1
The environmental quality performance limits
(i.e. Action/Limit Levels) of air quality monitoring were derived from the
baseline air quality monitoring results at the monitoring station (AM2); while
the environmental quality performance limits of noise monitoring were defined
in the EM&A Manual.
2.3.2
The environmental quality performance limits
are given in Appendix D.
2.4 Environmental Mitigation Measures
2.4.1
Relevant environmental mitigation measures were
stipulated in the Particular Specification and EP for the Contractor to adopt.
A list of environmental mitigation measures and their implementation statuses
are given in Appendix C.
3
air quality monitoring
3.1.1
In accordance with the updated EM&A Manual,
baseline 1-hour and 24-hour TSP levels at one air quality monitoring station was
established. Impact 1-hour TSP monitoring was conducted for at least three
times every 6 days, while impact 24-hour TSP monitoring was carried out for at
least once every 6 days.
3.1.2
The weather was mostly sunny, with several fine,
cloudy and rainy days in the reporting quarter. Weather information including
the wind speed and wind direction is annexed in Appendix F. The information was
obtained from the Hong Kong Observatory Tai Po and Tai Mei Tuk
Automatic Weather Stations.
3.1.3
The monitoring results for 1-hour TSP and
24-hour TSP monitoring are summarized in Tables 3.1 and 3.2 respectively.
Detailed impact air quality monitoring results are presented in Appendix E.
Table 3.1 Summary
of 1-hour TSP Monitoring Results in the Reporting Period
|
Location |
Average (mg/m3) |
Range (mg/m3) |
Action Level (mg/m3) |
Limit Level (mg/m3) |
|
AM2 (Fanling Government Secondary School) |
77.0 |
68.6 – 84.6 |
317.8 |
500 |
Table 3.2 Summary
of 24-hour TSP Monitoring Results in the Reporting Period
|
Location |
Average (mg/m3) |
Range (mg/m3) |
Action Level (mg/m3) |
Limit Level (mg/m3) |
|
AM2 (Fanling Government Secondary School) |
40.2 |
18.0 – 87.6 |
200.7 |
260 |
3.1.4
The major dust sources in the reporting period
included construction activities from Stage 2 of the Project, as well as nearby
traffic emissions.
3.1.5
All 1-hour and 24-hour TSP results were below
the Action and Limit Level in the reporting quarter.
3.1.6
Detailed impact air quality monitoring results
are presented in Appendix E.
4
Noise MONITORING
4.1.1
In accordance with the EM&A Manual, impact
noise monitoring was conducted for at least once per week during the
construction phase of the Contract.
4.1.2
The monitoring results for construction noise
are summarized in Table 4.1 and the monitoring data are provided in Appendix G.
Table
4.1 Summary of Construction Noise Monitoring Results in the Reporting
Period
|
|
Average (dB(A)) Leq (30 mins) |
Range (dB(A)) Leq (30 mins) |
Limit Level (dB(A)) Leq (30 mins) |
|
M2* |
69.2 |
68.4 – 70.6 |
75 |
|
M3# |
63.8 |
61.1 – 67.2 |
65/70 |
*+3dB(A) Façade correction included
# Limit Level of 70dB(A) applies to
education institutes while 65dB(A) applies during school examination period.
4.1.3
The major noise sources during the noise
monitoring included nearby road traffic noise.
4.1.4
No Action or Limit Level exceedance of
construction noise was recorded in the reporting period. No noise complaints
related to 0700 – 1900 hours on normal weekdays was received and followed by
the Environmental Team in the reporting period.
4.1.5
The graphical plots of the trends of the
monitoring results are provided in Appendix G.
5
Advice on the Solid and
Liquid Waste Management Status
5.1.1
As advised by the Contractor, 4,383 m3 of inert C&D material was disposed of as
public fill to Tuen Mun 38 (of which 0m3 was broken concrete), while
205 m3 of general refuse was disposed of at NENT landfill. 224 kg of paper/cardboard packaging, 350 kg of plastics and 68 kg of
metals were collected
by recycling contractors in the reporting period. 1,966 m3, 823 m3, and 982
m3 of inert C&D materials were reused on site, in other projects
and in NENT for backfilling purpose respectively. 0kg of chemical wastes was collected by licensed
contractors in the reporting period.
5.1.2
The actual amounts of different types of waste
generated by the activities of the Project in the reporting quarter are summarized
in Table 5.1.
Table 5.1 Summary of Waste Flow Table
|
Waste
Type |
Actual
Amount |
Disposal/Reuse
Locations |
|
Inert
C&D materials |
4,383 m3 (of which 0 m3 was broken concrete) |
Tuen Mun
38 |
|
General refuse |
205 m3 |
NENT Landfill |
|
Paper/cardboard
packaging |
224 kg |
Recycling Contractors |
|
Plastics |
350 kg |
Recycling Contractors |
|
Metals |
68 kg |
Recycling Contractors |
|
C&D
materials reused on site |
1,966 m3 |
Site Area |
|
C&D
materials reused in other projects |
823 m3 |
Other projects |
|
C&D
materials reused in NENT for backfilling |
982 m3 |
NENT Landfill |
|
Chemical wastes |
0 kg |
Licensed Contractors |
6
Summary of
Exceedances of the Environmental Quality Performance Limit
6.1.1
All 1-hour and 24-hour TSP monitoring results
complied with the Action / Limit Levels in the reporting quarter.
6.1.2
No Action or Limit Level exceedance of
construction noise was recorded in the reporting period. No noise complaints
related to 0700 – 1900 hours on normal weekdays was received and followed by
the Environmental Team in the reporting period.
7
Summary of
Complaints, Notifications of Summons and Successful Prosecutions
7.1.1
No complaint, notification of summons or
successful prosecution was received in the reporting period.
7.1.2
The statistics on complaints, notifications of
summons and successful prosecutions are summarized in Appendix H.
7.1.3
A 24-hour complaint hotline at 6628 8366 has
been established for the Project. The hotline number is displayed at the site
entrances, fencings and project signboards, as well as printed on publications
such as newsletters for the public.
8
Comments, recommendations and Conclusions
8.1 Comments
8.1.1
According to the
environmental site inspections performed in the reporting period, the following comments
are made to the Contractor for precautionary and rectification purposes:
Air Quality Impact
l The Contractor was recommended to cover the soil stockpile entirely to reduce dust generation.
l The Contractor was recommended to water the
site area frequently for dust suppression.
l The Contractor was recommended to keep the
public road and site entrance clear of dusty materials.
l The load on vehicle should be covered
entirely before leaving the site.
l The Contractor should cover cement stock
with impervious sheeting entirely.
Construction Noise Impact
l The breaker tip should be wrapped with acoustic-resistant materials to reduce noise nuisance.
Water Quality Impact
l Muddy water should be removed in catch pit and drainage.
l Proper mitigation measures should be implemented to prevent potential surface runoff and site water generated by wheel washing from entering public roads.
l The sediment at the bottom of the U-channel should be regularly removed to avoid stagnant water.
l The mud accumulated at a section of U-channel inside the site boundary at SA 340 should be removed regularly especially after rain fall to maintain a high efficiency of the WetSep.
Chemical
and Waste Management
l The Contractor should provide drip trays to oil drums to prevent any oil leakage.
Landscape and
Visual Impact
l Nil.
Miscellaneous
l The Contractor was recommended to ensure public road is kept clear of dusty materials from the construction site.
l The up-to-date EP should be posted at all entrances/exits.
l Stagnant water in a material skip and H-beam should be removed.