Contents

 

                                                                                                                                                    Page

EXECUTIVE SUMMARY                                                                                                                 i

1       INTRODUCTION AND PROJECT INFORMATION                                                           1

1.1         Background.............................................................................................................. 1

1.2         Construction Programme and Activities.................................................................. 1

1.3         Project Organisation............................................................................................ 232

1.4         Purpose of the Report............................................................................................ 23

2       SUMMARY OF EM&A REQUIREMENTS                                                                           3

2.1         Environmental Impact Hypothesis under Monitoring.............................................. 3

2.2         Monitoring Requirements..................................................................................... 343

2.3         Environmental Mitigation Measures.................................................................... 344

3       SUMMARY OF EM&A MONITORING DATA                                                                   35

3.1         Monitoring Data...................................................................................................... 35

3.2         Summary of Monitoring Exceedances.................................................................. 45

4       ENVIRONMENTAL NON-CONFORMANCE                                                                   576

4.1         Summary of Environmental Non-Compliance.................................................... 576

4.2         Summary of Environmental Complaints............................................................... 57

4.3         Summary of Environmental Summon and Successful Prosecutions.................. 57

5       REVIEW OF THE VALIDITY OF EIA PREDICTIONS                                                       57

6       REVIEW OF EM&A PROGRAMME                                                                                   57

7       CONCLUSIONS                                                                                                                   67

 

 

List of Tables

Table 1.1      Contact Information of Key Personnel

Table 2.1      Monitoring Parameter

Table 3.1      Summary of Monitoring Data in the Reporting Period

Table 3.2      Summary of Exceedance Events in the Reporting Period

 

 

List of Figures

Figure 1        Demarcation of Entrusted Portion of Widening of Tolo Highway/Fanling Highway between Island House Interchange and Fanling ¡V Stage 2

Figure 2        Environmental Monitoring Locations

 

 

List of Appendices

Appendix A  Construction Programme

Appendix B  Project Organization Structure

Appendix C  Summary of Event and Action Plan

Appendix D  Implementation Schedule of Environmental Mitigation Measures (EMIS)

Appendix E  Summary of Meteorological Condition Extracted from Hong Kong Observatory

Appendix F  Environmental Monitoring Data for Air, Noise and Water Quality

Appendix G  Statistics on Complaints, Notifications of Summons and Successful Prosecutions

 


EXECUTIVE SUMMARY

This report documents the findings of EM&A works conducted during the period between November 2017 and October 2018.

 

The impact stage EM&A programme for the Project includes air quality and, noise quality monitoring. 

 

The EM&A programme was carried out by the ET in accordance with the EM&A Manual requirements.  It is concluded from the environmental monitoring and audit works that adequate environmental mitigation measures have been implemented by the civil works contractors where appropriate in the reporting period.

 

In the reporting period, 1 exceedance event was recorded and the exceedances was concluded not related to the Project.  No necessary remedial actions have been taken.

 

No environmental non-compliance was noted. One environmental complaint was received,. which was concluded that it was unlikely due to the construction works of this Project after investigations, was received.   No environmental related prosecution or notification of summons was received in the reporting period. 

 

The box culvert works have been partially completed by the end of March 2014 except the last construction activity, i.e. installation of a base slab at Box Culvert ID4. The installation of the base slab at Box Culvert ID4 was commenced in December 2016 and has been completed in March 2017. The 4-week post-construction water quality monitoring at I5 was completed in the end of April 2017. 

 

 

 

 


1                 INTRODUCTION AND PROJECT INFORMATION

1.1              Background

1.1.1          The Project is a Designated Project under the Environmental Impact Assessment Ordinance (EIAO) (Cap. 499).  An Environmental Impact Assessment (EIA) Report together with an Environmental Monitoring and Audit (EM&A) Manual were approved on 14 July 2000 (Register Number: EIA-043/2000).  The Project is governed by an Environmental Permit (EP) (EP-324/2008) which was granted on 23 December 2008.  A variation of EP (VEP) was applied and the VEP (EP-324/2008/A) was subsequently granted on 31 January 2012.  An additional VEP has been applied on 24 February 2014 and the VEP (EP-324/2008/B) was subsequently granted on 17 March 2014. Furthermore, an additional VEP has been applied on 9 March 2015 and the VEP (EP-324/2008/C) was subsequently granted on 27 March 2015. The previous VEP (EP-324/2008/D) was granted on 27 August 2015. The current VEP (EP-324/2008/E) was granted on 26 January 2017.

1.1.2          Chun Wo Construction & Engineering Co Ltd (Chun Wo) was commissioned by the Civil Engineering and Development Department (CEDD) as the Civil Contractor for the Entrusted Portion of Widening of Tolo Highway/Fanling Highway between Island House Interchange and Fanling Stage 2.  Meinhardt Infrastructure & Environment Ltd (MIEL) has been appointed by Chun Wo as the Environmental Team (ET) to fulfill the corresponding EM&A requirements pursuant to Environmental Permit No. EP-324/2008/D in accordance with the Updated EM&A Manual (dated October 2013) for Widening of Tolo Highway/Fanling Highway between Island House Interchange and Fanling Stage 2.  The EM&A programme commenced in 5 November 2013.

1.1.3          Figure 1 shows the works areas for the Entrusted Portion of Widening of Tolo Highway/Fanling Highway between Island House Interchange and Fanling Stage 2. 

1.2              Construction Programme and Activities

1.2.1          The master construction programme for the entire construction period is presented in Appendix A.  The major construction activities undertaken in the reporting period are summarized below:

¡P         Cable Detection and Trial Trenches;

¡P         Remaining Works on New Kiu Tau Footbridge;

¡P         Noise Barrier Construction;

¡P         Roadworks and Pavement Works;

¡P         Viaduct Segment Erection;

¡P         Water Main Laying Works (on Grade and on bridge deck);

¡P         Installation of Noise Barrier Steel Column & Panel and sign gantry (on Grade and on bridge deck);

¡P         Parapet Installation on Bridge Deck;

¡P         Drainage Work;

¡P         Mini-pile Installation;

¡P         Construction of Profile Barrier & Planter Wall on Bridge Deck;

¡P         Stressing of External Tendon;

¡P         Construction of Retaining Wall Behind Abutment and backfill;

¡P         Waterproofing works on Bridge deck;

¡P         Stitching works for longitudinal stitch of viaduct;

¡P         Demolition of Existing Kiu Tau Vehicular Bridge;

¡P         Bitumen paving on bridge deck;

¡P         Installation of deck cell light inside the bridge deck;

¡P         Installation of movement joint on the bridge; and

¡P         Landscaping works.

1.3              Project Organisation

1.3.1          The project organization structure is shown in Appendix B.  The key personnel contact names and numbers for the Project, together with the general enquiry hotline, are summarised in Table 1.1.

Table 1.1     Contact Information of Key Personnel

Party

Role

Position

Name

Tele-phone

Fax

AECOM

Engineer¡¦s Representative

Senior Resident Engineer

Mr. Alan Lee

2171 3303

2171 3498

Resident Engineer (Environmental)

Mr. Perry Yam

2171 3350

Mott MacDonald

Independent Environmental Checker (IEC)

IEC

Mr. Steven Tang

2828 5920

2827 1823

Chun Wo

Contractor

Site Agent

Mr. Daniel Ho

2638 6144

2638 7077

Environmental Officer

Mr. Yang Ran

2638 6147

Environmental Supervisor

Mr. Franki Leung

2638 7005

Meinhardt

Environmental Team (ET)

ET Leader

Mr. Fredrick Leong

2859 1739

2540 1580

Enquiry Hotline

General Enquiry

--

Ms Helena Mak

6355 1731

--

 

1.4              Purpose of the Report

1.4.1          This is the Annual EM&A Review Report which summaries the impact monitoring results and audit findings for the Project during the reporting period between November 2017 and October 2018.

2                 SUMMARY OF EM&A REQUIREMENTS

2.1              Environmental Impact Hypothesis under Monitoring

2.1.1          The EIA Report concluded that with proper mitigation measures implemented, fugitive dust emission during construction phase would be controlled and will not exceed the acceptable criteria. 

2.1.2          For construction noise, exceedances were predicted only at 2 schools (SR41 Wong Shiu Chi Middle School and SR45 HK Teacher¡¦s Association Secondary School) but they are out of the scope of this EM&A Programme.  Hence the EIA did not anticipate any noise exceedances during construction phase within the scope of this EM&A Programme.

2.1.3          The above criteria have been tested under this EM&A Programme during the reporting period.

2.2              Monitoring Requirements

2.2.1          In accordance with the Updated EM&A Manual, environmental parameters including air quality, noise have been monitored.  The specific parameters, monitoring frequency and the respective Action and Limit Levels are given in Table 2.1 and the location of the monitoring station is shown in the Figure 2.

Table 2.1     Monitoring Parameter

Parameter

Unit

Action Level

Limit Level

Frequency

Air Quality

1-hour TSP

mg/m3

292.7

500

Three times every 6 days

24-hour TSP

mg/m3

170.3

260

Once every 6 days

Construction Noise

Leq 30min

dB(A)

When one documented valid complaint is received

75

Once every Week

 

2.2.2          The Event and Action Plan for the occurrence of non-compliance of the criteria of the monitoring parameters is annexed in Appendix C.

2.3              Environmental Mitigation Measures

2.3.1          Environmental mitigation measures have been recommended in the EM&A Manual and are given in Appendix D.  The implementation status for the reporting period is also given in the Appendix.

3                 SUMMARY OF EM&A MONITORING DATA

3.1              Monitoring Data

3.1.1          Monitoring has been conducted in accordance with the specification in the EM&A Manual in the reporting period. Summary of meteorological condition for the reporting period have been extracted from Hong Kong Observatory and are given in Appendix E.  Monitoring data with graphical presentation for the reporting period have been given in Appendix F.  A summary on the monitoring results has also been given in Table 3.1.

Table 3.1     Summary of Monitoring Data in the Reporting Period

Monitoring Location

Minimum

Maximum

Average

Air Quality

1-hour Total Suspended Particulate

SR77

68.1mg/m3

247.0mg/m3

132.8mg/m3

24-hour Total Suspended Particulate

SR77

12.1mg/m3

202.7mg/m3

66.7mg/m3

Construction Noise

SR77

62.0dB(A)

74.5dB(A)

71.2dB(A)

 

3.2              Summary of Monitoring Exceedances

3.2.1          The number of exceedance events recorded in the reporting period is summarized in Table 3.2.

3.2.2          Investigation for the exceedance event in the reporting period has been completed and the exceedance was concluded not related to the Project.  No necessary remedial actions have been taken.  The respective investigation report has been presented in the respective Monthly EM&A Report.

Table 3.2     Summary of Exceedance Events in the Reporting Period

Parameter

 

Number of Exceedance Events

Number of Project Related Exceedance Events

Air Quality

1-hour Total Suspended Particulates

Action Level

0

0

Limit Level

0

0

24-hour Total Suspended Particulates

Action Level

1

0

Limit Level

0

0

Construction Noise

Leq 30min

Action Level

0

0

Limit Level

0

0

 

3.2.3          The Contractor has been reminded to strengthen the mitigation measures including:

Air Quality

¡P         Watering within site and vehicle washing facilities shall be enhanced.

¡P         Stockpiles and/or excavated dusty materials shall be covered coverage with impervious sheeting and/or sufficient water spraying for dust suppression.

¡P         Colour NRMM label shall be provided for all Non Road Mobile Machineries.

¡P         Mud and debris shall be removed to prevent potential muddy water flow to public road.

 

Chemical and Waste Management

¡P         Housekeeping shall be enhanced and refuse shall be collected regularly.P

¡P         Secondary containment and/or drip tray shall be provided for chemicals to prevent any potential leakage.

¡P         General housekeeping shall be enhanced throughout the construction site.

Water Quality

¡P     Drainage facilities shall be well maintained and inspected regularly.

¡P     Preventive measure shall be enhanced to prevent soil/ rock from engineering the WSD area.

¡P     Trapped Water shall be pumped or removed to avoid site runoff overflow.

¡P     Enhancement to water pumping pipe at NB 67 shall be adopted.

¡P     Wastewater shall be removed and treated properly prior to discharge in accordance with WPCO License.

4                 ENVIRONMENTAL NON-CONFORMANCE

4.1              Summary of Environmental Non-Compliance

4.1.1          No environmental non-compliance was recorded in the reporting period. 

4.2              Summary of Environmental Complaints

4.2.1          One (1) environmental complaint was received in the reporting period regarding air quality nearby Kau Lung Hang and Hong Lok Yuen was received on 28 Dec 2017.  Investigation has been conducted and the complaint was considered unlikely due to the construction works of this Project. 

4.3              Summary of Environmental Summon and Successful Prosecutions

4.3.1          No environmental related prosecution or notification of summons was received in the reporting period.  The cumulative statistics are provided in is provided in Appendix G.

5                 REVIEW OF THE VALIDITY OF EIA PREDICTIONS

5.1.1          The EIA report predicted that with proper implementation of the mitigation measures for air and noise, environmental impact would be locally confined and controllable.  During the reporting period, One (1) exceedances was recorded and the exceedances w concluded not related to the Project.  Hence, it is considered that the EIA predictions are valid for the reporting period.

6                 REVIEW OF EM&A PROGRAMME

6.1.1          The EM&A programme was considered successfully and adequately conducted during the course of the reporting period.

6.1.2          The box culvert works have been partially completed by the end of March 2014 except the last construction activity, i.e. installation of a base slab at Box Culvert ID4.  The box culvert works have been completed in the end of March 2017. The 4-week post-construction water quality monitoring at I5 was completed in the end of April 2017 in the same manner as the impact monitoring..

7                 CONCLUSIONS

7.1.1          The EM&A programme were carried out by the ET in accordance with the EM&A Manual requirements. It is concluded from the environmental monitoring and audit works that adequate environmental mitigation measures have been implemented by the civil works contractors where appropriate in the reporting period.

7.1.2          In the reporting period, 1 exceedance event  has been recorded and the exceedances was concluded not related to the Project.  No necessary remedial actions have been taken.

7.1.3          No environmental non-compliances were noted. No environmental complaint was received in the reporting period. 

7.1.4          The box culvert works have been partially completed by the end of March 2014 except the last construction activity, i.e. installation of a base slab at Box Culvert ID4. The box culvert works had been completed in March 2017. The 4-week post-construction water quality monitoring at I5 was completed in the end of April 2017.