Contents

 

                                                                                                                                                    Page

EXECUTIVE SUMMARY                                                                                                               iii

1       INTRODUCTION AND PROJECT INFORMATION                                                         12

1.1         Background............................................................................................................ 12

1.2         Construction Programme and Activities................................................................ 12

1.3         Project Organisation................................................................................................ 2

1.4         Purpose of the Report............................................................................................ 32

2       SUMMARY OF EM&A REQUIREMENTS                                                                         32

2.1         Environmental Impact Hypothesis under Monitoring............................................ 32

2.2         Monitoring Requirements....................................................................................... 32

2.3         Environmental Mitigation Measures...................................................................... 42

3       SUMMARY OF EM&A MONITORING DATA                                                                   52

3.1         Monitoring Data...................................................................................................... 52

3.2         Summary of Monitoring Exceedances.................................................................. 52

4       ENVIRONMENTAL NON-CONFORMANCE                                                                     62

4.1         Summary of Environmental Non-Compliance...................................................... 62

4.2         Summary of Environmental Complaints............................................................... 72

4.3         Summary of Environmental Summon and Successful Prosecutions.................. 72

5       REVIEW OF THE VALIDITY OF EIA PREDICTIONS                                                       72

6       REVIEW OF EM&A PROGRAMME                                                                                   72

7       CONCLUSIONS                                                                                                                   72

 

 

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 Data 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 20154 and October 20165.

 

The impact stage EM&A programme for the Project includes air quality, noise and water 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, only 51 exceedance events waeres recorded and the exceedances wasere concluded not related to the Project.  No necessary remedial actions have been taken.

 

No environmental non-compliance was noted. NoOne environmental complaint, which was concluded as 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.  Due to the loading requirement of a fresh water main under the box culvert, installation of the base slab at Box Culvert ID4 has been scheduled to be commenced in December 2016.

has to be scheduled in November 2015 after the utilities diversions were completed, and therefore the construction works were temporary suspended. 

The construction works at the box culvert ID4 are temporarily suspended until the utilities diversion works complete.   The 4-week post construction water quality monitoring will be conducted after the installation of the base slab finishes, hence the completion of the box culvert works.  As such, impact monitoring for water quality is anticipated to be resumed in December 2016 during the course of remaining box culvert works.  As such, impact monitoring for water quality is anticipated to be resumed in November 2015 during the course of remaining box culvert works. 

 

 

 

 


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 current VEP (EP-324/2008/D) was granted on 27 August 2015.

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         Decking Construction for Bridge E;

¡P         Demolition of Existing Vehicular Bridge;

¡P         E & M Work for New Valve Control & Telemetry House;

¡P         Erection of Temporary support for demolition of J-bridge;

¡P         Filling Works at Tong Hang East;

¡P         Footbridge Construction;

¡P         FRP Lining on Existing Water Main;

¡P         Installation of Stone Cladding;

¡P         Noise Barrier Construction;

¡P         Pier / Pier Table Construction;

¡P         Pile Cap Works;

¡P         Piling Works;

¡P         Piling Works for Viaduct ;

¡P         Piling Works for Noise Barrier;

¡P         Portal Beam Construction;

¡P         Pre-drilling;

¡P         Pre-drilling works and Piling Works for Noise Barrier;

¡P         Pre-drilling Works and Piling Works for Viaduct ;

¡P         Road Works at Fanling Highway;

¡P         Retaining Wall Construction ;

¡P         Road Works;

¡P         Sewer Works ;

¡P         Slope Works;

¡P         Socket H-pile Installation ;

¡P         Steel Posts and Panels Installation of Noise Barrier;

¡P         Storm Drains Laying;

¡P         Tree Felling Works;

¡P         Utilities Duct Laying;

¡P         Viaduct Segment Erection;

¡P         Water Main Connection Works;

¡P         Water Main Laying; and

¡P            Waterworks.

¡P            Tree felling works;

¡P            Abutment construction for Bridge E;

¡P            Erection of temporary support at DSD nullah;

¡P            Piling works;

¡P            Piling works for Bridge E;

¡P            Utilities duct laying;

¡P            Socket H-pile installation;

¡P            Road works at Fanling Highway;

¡P            Traffic diversion for Fanling Highway;

¡P            Retaining structure construction;

¡P            Construction of valve control Telemetry House;

¡P            Pre-drilling works;

¡P            Pile cap works;

¡P            Pier / Pier table construction;

¡P            Noise barrier construction;

¡P            Sewer pipes laying;

¡P            Water pipes laying;

¡P            Storm drains laying;

¡P            Lagging wall and capping beam for bored pile wall;

¡P            Filling Works at Tong Hang East;

¡P            Catch fence erection;

¡P            Cable detection and trial trenches;

¡P            Pile cap construction for Bridge E;

¡P            ADMS installation;

¡P            E & M work for new valve control & Telemetry House;

¡P            Demolition of central divider at Fanling Highway;

¡P            Viaduct segment erection;

¡P            Socket H-pile load test;

¡P            Sewer works at TWSRW;

¡P            Diversion of DN600;

¡P            Erection of temporary support at DSD nullah for Bridge E;

¡P            Box culvert inlet structure;

¡P            Portal beam construction;

¡P            Decking construction for Bridge E;

¡P            Construction of temporary steel ramp for Kiu Tau Footbridge; and

¡P         Slope 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 1.1Table 1.1.

Table 1.11   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. Victor Huang

2638 6181

 

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 20152014 and October 20162015.

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          For water quality, it is also anticipated that with proper protection measures being implemented, the water quality during construction phase would be locally confined and controllable.

2.1.4          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 and water quality have been monitored.  The specific parameters, monitoring frequency and the respective Action and Limit Levels are given in Table 2.1Table 2.1 and the location of the monitoring station is shown in the Figure 2.

Table 2.11   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

Water Quality

Depth

 

--

--

Three occasions per week

Temperature

¢XC

--

--

Three occasions per week

Salinity

ppt

--

--

Three occasions per week

pH

--

--

--

Three occasions per week

DO

mg/L

6.7

4mg/L or 40% saturation at 15 degree Celsius

Three occasions per week

DO Saturation

%

--

--

Three occasions per week

Turbidity

NTU

81.9NTU or 120% of upstream control station¡¦s Tby of the same day

91.9NTU or 130% of upstream control station¡¦s Tby of the same day

Three occasions per week

SS

mg/L

42.6 mg/L or 120% of upstream control station¡¦s SS of the same day

46.8 mg/L or 130% of upstream station¡¦s SS of the same day and specific sensitive receiver water quality requirements

Three occasions per 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.

Temporary Suspension of Box Culvert Works and Water Quality Monitoring

2.2.3          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.  Due to the loading requirement of a fresh water main under the box culvert, installation of the base slab at Box Culvert ID4 has been scheduled to be commenced in December 2016.  The 4-week post construction water quality monitoring will be conducted after the installation of the base slab finishes, hence the completion of the box culvert works.  As such, impact monitoring for water quality is anticipated to be resumed in December 2016 during the course of remaining box culvert works. 

1.1.1                    The box culvert works have been partially completed by the end of March 2014 except the last construction activity, which is the installation of a base slab at Box Culvert ID4.  Due to the loading requirement of a fresh water main under the box culvert, installation of the base slab at Box Culvert ID4 has to be scheduled in November 2015 after the utilities diversions were completed, and therefore the construction works are temporarily suspended.  The 4-week post construction water quality monitoring will be conducted after the installation of the base slab finishes, hence the completion of the box culvert works.  As such, impact monitoring for water quality is anticipated to be resumed in November 2015 during the course of remaining box culvert works. 

2.3              Environmental Mitigation Measures

2.3.1          Environmental mitigation measures have been recommended in the EM&A Manual and is 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 Mmeteorological datacondition 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 3.1Table 3.1.

Table 3.11   Summary of Monitoring Data in the Reporting Period

Monitoring Location

Minimum

Maximum

Average

Air Quality

1-hour Total Suspended Particulate

SR77

58.9mg/m340.4mg/m3

279.3mg/m3211.2mg/m3

138.9mg/m3119.7mg/m3

24-hour Total Suspended Particulate

SR77

22.8mg/m342.1mg/m3

172.3mg/m3148.3mg/m3

91.9mg/m389.8mg/m3

Construction Noise

SR77

59.5dB(A) 62.0dB(A)

76.5dB(A)76.5dB(A)

64.5dB(A)69.2dB(A)

Water Quality

DO

I5

4.3mg/L

5.4mg/L

4.9mg/L

C3a

5.2mg/L

7.6mg/L

6.4mg/L

C3b

8.6mg/L

9.2mg/L

8.9mg/L

Turbidity

I5

4.9NTU

17.7NTU

11.3NTU

C3a

4.1NTU

11.1NTU

7.6NTU

C3b

4.8NTU

46.9NTU

25.9NTU

SS

I5

3.2mg/L

3.7mg/L

3.4mg/L

C3a

10.0mg/L

19.0mg/L

14.5mg/L

C3b

5.1mg/L

27.5mg/L

16.3mg/L

 

3.2              Summary of Monitoring Exceedances

3.2.1          The number of exceedance events recorded in the reporting period is summarized in Table 3.2Table 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 3.22   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

10

0

Limit Level

0

0

Construction Noise

Leq 30min

Action Level

0

0

Limit Level

1

0

Water Quality

DO

Action Level

2

0

Limit Level

0

0

Turbidity

Action Level

0

0

Limit Level

1

0

SS

Action Level

0

0

Limit Level

0

0

 

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

¡P         Silt removal facilities, channels and manholes should be well inspected and maintained regularly;

¡P         All plant and equipment should be well maintained and in good operating condition to avoid black smoke emission;

¡P         Water treatment facilities should be properly maintained and avoid untreated water entering storm drain;

¡P         Proper drainage channels/bunds should be provided at the site boundaries to collect/intercept the surface run-off from works areas;

¡P         Water spraying or covering of tarpaulin should be properly implemented whenever necessary for the unpaved roads, access roads and construction areas;

¡P         All vehicles should be washed to remove any dusty materials before leaving the construction site;

¡P         Vessels and equipment operating should be checked regularly and properly maintained;

¡P         Secondary containment, like drip trays and/or bundings, should be provided for all chemical containers to retain any oil/chemical waste leakage within the construction site;

¡P         Chemical waste should be stored, handled and disposed of properly; and

¡P         On site segregation should be implemented as far as practicable for reuse and recycle.

¡P            Water spraying or covering of tarpaulin should be properly implemented whenever necessary for the unpaved roads, access roads construction areas;

¡P            All vehicles should be washed to remove any dusty materials before leaving the construction site;

¡P            Wheel washing facilities should be properly maintained to ensure proper functioning;

¡P            All types of wastes, both on land floating in the river stream, should be collected sorted properly, also be disposed timely properly.  Refuse collection bins should be labelled properly;

¡P            Provide proper chemical storage and chemical waste management;

¡P            Water treatment facilities should be properly maintained avoid untreated water entering storm drain;

¡P            Secondary containment should be provided for all powered mechanical equipment within the construction site;

¡P            A spill response procedure shall be in place absorption material available for minor spillages;

¡P            Good housekeeping should be maintained general refuse should be removed regularly;

¡P            Plant equipment should be properly maintained to avoid emitting black smoke;

¡P            Proper drainage channels/bunds should be provided at the site boundaries to collect/intercept the surface run-off from works areas

¡P            Vessels and equipment operating should be checked regularly properly maintained;

¡P            Secondary containment, like drip trays/or bundings, should be provided for all chemical containers to retain any oil/chemical waste leakage within the construction site; and

¡P            Chemical waste should be stored, handled disposed of properly.

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          NoOne (1) environmental complaint was received in the reporting period. period regarding water quality of Ng Tung River.  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, noise and water quality, environmental impact would be locally confined and controllable.  During the reporting period, 5only 1 exceedances wereas recorded and the exceedances wereas concluded not related to the Project.  Hence, it is considered that the EIA predictions is 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.  Due to the loading requirement of a fresh water main under the box culvert, installation of the base slab at Box Culvert ID4 has been scheduled to be commenced in December 2016.  The 4-week post construction water quality monitoring will be conducted after the installation of the base slab finishes, hence the completion of the box culvert works.  As such, impact monitoring for water quality is anticipated to be resumed in December 2016 during the course of remaining box culvert works. 

1.1.1                    The box culvert works have been partially completed by the end of March 2014 except the last construction activity, which is the installation of a base slab at Box Culvert ID4.  Due to the loading requirement of a fresh water main under the box culvert, installation of the base slab at Box Culvert ID4 has to be scheduled in November 2015 after the utilities diversions were completed, and therefore the construction works were temporarily suspended.  The 4-week post construction water quality monitoring will be conducted after the installation of the base slab finishes, hence the completion of the box culvert works.  As such, impact monitoring for water quality is anticipated to be resumed in November 2015 during the course of remaining box culvert works.

 

7                 CONCLUSIONS

7.1.1          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.

7.1.2          In the reporting period, 51 exceedance events have has been recorded and the exceedances were was concluded not related to the Project.  No necessary remedial actions have been taken.

7.1.3          No environmental non-compliances were noted. One environmental complaint, which was concluded as unlikely due to the construction works of this Project after investigations, was received. No environmental related prosecution or notification of summons were 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.  Due to the loading requirement of a fresh water main under the box culvert, installation of the base slab at Box Culvert ID4 has been scheduled to be commenced in December 2016.  The 4-week post construction water quality monitoring will be conducted after the installation of the base slab finishes, hence the completion of the box culvert works.  As such, impact monitoring for water quality is anticipated to be resumed in December 2016 during the course of remaining box culvert works.  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.  Due to the loading requirement of a fresh water main under the box culvert, installation of the base slab at Box Culvert ID4 has to be scheduled in November 2015 after the utilities diversions were completed, and therefore the construction works are temporarily suspended.  The 4-week post construction water quality monitoring will be conducted after the installation of the base slab finishes, hence the completion of the box culvert works.  As such, impact monitoring for water quality was not necessary in the reporting period due to temporary suspension of the construction works and is anticipated to be resumed in November 2015 during the course of remaining box culvert works.