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................................................................................................ 2

1.4         Purpose of the Report.............................................................................................. 3

2       SUMMARY OF EM&A REQUIREMENTS                                                                           3

2.1         Monitoring Requirements......................................................................................... 3

2.2         Environmental Mitigation Measures........................................................................ 4

3       SUMMARY OF EM&A Monitoring Data                                                                              4

3.1         Monitoring Data........................................................................................................ 4

3.2         Summary of Monitoring Exceedances.................................................................... 4

4       WASTE MANAGEMENT                                                                                                      5

5       ENVIRONMENTAL NON-CONFORMANCE                                                                       5

6       CONCLUSION, COMMENTS AND RECOMMENDATIONS                                             6

 

 

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 Quarter

Table 3.2      Summary of Exceedance Events in the Reporting Quarter

 

 

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  Implementation Schedule of Environmental Mitigation Measures (EMIS)

Appendix D  Meteorological Data Extracted from Hong Kong Observatory

Appendix E  Environmental Monitoring Data for Air Quality and Noise

Appendix F  Waste Flow Table

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

 


EXECUTIVE SUMMARY

This report documents the findings of EM&A works conducted in the quarter between 1 August 2014 and 31 October 2014.

 

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

 

In the reporting quarter, a total of 3 exceedance events were recorded.  The exceedances were concluded not to be project related.  No necessary remedial actions have been taken.

 

No environmental non-compliance was noted. No environmental complaint was received. No environmental related prosecution or notification of summons was received in the reporting quarter. 

 

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 were temporary 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 quarter 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. 

 

 

 

 

 


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.

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/B 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 construction programme is presented in Appendix A.  The major construction activities undertaken in the reporting quarter are summarized below:

¡P         Bored pile and bored pile wall construction;

¡P         Cable detection and trial trenches;

¡P         Local diversion of DN1400;

¡P         Lay Dia.1050 storm drains;

¡P         Mini pile construction;

¡P         Noise barrier installation;

¡P         Pile Cap Works;

¡P         Piling works for Bridge E;

¡P         Pre-drilling;

¡P         Receiving & Jacking Pit;

¡P         Retaining Structure;

¡P         Road works at Fanling Highway;

¡P         Sewer works at TWSRW;

¡P         Slope upgrading works;

¡P         Soil nail construction;

¡P         Tree Felling Works;

¡P         Water pipe installation;

¡P         RC structure of new valve control & Telemetry House;

¡P         Demolition of Huts;

¡P         Abutment construction for Bridge E;

¡P         Excavation by trenchless method;

¡P         Extension of Bored pile for bored pile wall;

¡P         Filling Works at Tong Hang East;

¡P         Lay storm drains;

¡P         Load test for installed Mini pile;

¡P         Pier Construction;

¡P         Socket H-pile installation; and

¡P         Utilities duct laying.

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

Telephone

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. Terence Kong

2828 5919

2827 1823

Chun Wo

Contractor

Site Agent

Mr. Daniel Ho

2638 6144

2638 7077

Senior Environmental Officer

Mr. Sam Lam

2638 6168

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 Quarterly EM&A Report which summaries the impact monitoring results and audit findings for the Project during the reporting period between 1 August 2014 and 31 October 2014.

2                 SUMMARY OF EM&A REQUIREMENTS

2.1              Monitoring Requirements

2.1.1          In accordance with the Updated EM&A Manual, environmental parameters including Air Quality and 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

 

Temporary Suspension of Box Culvert Works and Water Quality Monitoring

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

2.1.3          As such, impact monitoring for water quality was not necessary in the reporting quarter 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. 

2.2              Environmental Mitigation Measures

2.2.1          Environmental mitigation measures have been recommended in the EM&A Manual and are given in Appendix C.  The implementation status for the reporting quarter 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 quarter.  Meteorological data for the reporting quarter have been extracted from Hong Kong Observatory and are given in Appendix D.  Monitoring data with graphical presentation for the reporting quarter have been given in Appendix E.  A summary on the monitoring results has also been given in Table 3.1.

Table 3.1     Summary of Monitoring Data in the Reporting Quarter

Monitoring Location

Minimum

Maximum

Average

Air Quality

1 hour Total Suspended Particulate

SR77

41.5mg/m3

229.7mg/m3

95.5mg/m3

24 hour Total Suspended Particulate

SR77

40.8mg/m3

237.9mg/m3

114.5mg/m3

Construction Noise

SR77

65.9dB(A)

71.7dB(A)

68.8dB(A)

 

3.1.2          The maximum recorded 24-hour Total Suspended Particulate in the reporting quarter is 237.9mg/m3 which is higher than the action level of 170.3mg/m3.  However, respective investigation has been conducted and concluded the exceedances would not be project related.

3.2              Summary of Monitoring Exceedances

3.2.1          The number of exceedances event recorded in the reporting quarter is summarized in Table 3.2.

3.2.2          Investigations for the exceedance events in the reporting quarter have been completed.  The exceedances were considered not to be related to the construction works.  The respective investigation reports have been presented in the respective Monthly EM&A Reports.

Table 3.2     Summary of Exceedance Events in the Reporting Quarter

Parameter

 

Number of Exceedances 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

3

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:

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

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

¡P         Channels or earth bunds or sand bag barriers should be provided on site to prevent surface runoff and properly direct the stormwater to silt removal facilities;

¡P         Silty effluent should be treated/desilted before discharged; Untreated effluent should be prevented from entering public drain channel;

¡P         Stockpiles of dusty materials should be covered by tarpaulin or similar fabric during rainy seasons;

¡P         All chemicals stored on site should be provided with drip trays;

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

¡P         All chemicals stored on site should be provided with drip trays; and

¡P         Refuse collection bins should be labelled properly.

4                 WASTE MANAGEMENT

4.1.1          The Contractor has registered as a chemical waste producer of the Project.  The C&D materials and waste sorting were carried out on-site.  Receptacles were provided for general refuse collection.

4.1.2          During the reporting quarter, a total of 15,427m3 of excavated material has been generated.  10,444m3 of inert C&D materials was disposed of at public fill to Tuen Mun Area 38, while 4,068m3 of inert C&D materials was reused on site.  390m3 of general refuse was disposed of at North East New Territories (NENT) Landfill.  15m3 of plastics and no paper/cardboard packaging and metals were collected by recycling contractor in the reporting quarter.  9m3 of chemical waste was collected by licensed contractor in the reporting quarter.  Details of the waste management data are presented in Appendix F.

5                 ENVIRONMENTAL NON-CONFORMANCE

5.1.1          No environmental non-compliance was recorded in the reporting quarter.  No environmental complaints were received in the reporting quarter.  Investigations for the exceedances have been conducted.  No environmental related prosecution or notification of summons was received in the reporting quarter.  The summary for the non-compliance, complaints and prosecutions is provided in Appendix G.

6                 CONCLUSION, COMMENTS AND RECOMMENDATIONS

6.1.1           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 quarter.

6.1.2          In the reporting quarter, a total of 3 exceedance events have been recorded.  No exceedances were concluded to be project related.  No necessary remedial actions have been taken.

6.1.3          No environmental non-compliances were noted. No environmental complaint was received. No environmental related prosecution or notification of summons were received in the reporting quarter. 

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

6.1.5          As such, impact monitoring for water quality was not necessary in the reporting quarter 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.