Contract No: HK/2015/01

 

Wanchai Development Phase II and Central Wanchai Bypass

Sampling, Field Measurement and Testing Work (Stage 3)

 

Environmental Permit no. EP-356/2009,

Further Evironmental permit nos. fep-02/356/2009, FEP-03/356/2009, Fep-04/356/2009

Fep-06/356/2009, FEP-07/356/2009 and FEP-08/356/2009

 

Quarterly Environmental Monitoring
and Audit Report

 

- June to August 2018 -

 

CLIENTS:

PREPARED BY:

 

 

Civil Engineering and Development

Department

 

and

 

Highways Department

 

Lam Geotechnics Limited

 

11/F Centre Point

181-185 Gloucester Road,

Wanchai, H.K.

 

Telephone: (852) 2882-3939

Facsimile: (852) 2882-3331

E-mail: info@lamenviro.com

Website: http://www.lamenviro.com

 

 

 

 

 

CHECKED by:



 

 

 

 

 

Raymond Dai

Environmental Team Leader

 

 

 

DATE:

 

 

2 October 2018


Table of contents

 

EXECUTIVE SUMMARY. 3

1. Introduction. 7

1.1 Scope of the Report 7

1.2 Structure of the Report 7

2. Project Background. 8

2.1 Background. 8

2.2 Scope of the Project and Site Description. 8

2.3 Division of the Project Responsibility. 9

2.4 Project Organization and Contact Personnel 11

2.5 Principal Work and Activities. 13

3. Monitoring Requirements. 14

3.1. Noise Monitoring. 14

3.2. Air Monitoring. 15

3.3 Water Quality Monitoring. 18

4. Monitoring Results. 24

4.1. Noise Monitoring Results. 24

4.2. Air Monitoring Results. 26

4.3 Water Monitoring Results. 28

4.4 Waste Monitoring Results. 31

5. Compliance Audit. 37

5.1. Noise Monitoring. 37

5.2. Air Monitoring. 37

5.3. Water Quality Monitoring. 37

5.4. Site Audit 38

5.5. Review of the Reasons for and the Implications of Non-compliance. 38

5.6. Summary of action taken in the event of and follow-up on non-compliance. 38

6. Complaints, Notification of Summons and Prosecution. 38

7. Cumulative Construction Impact due to the Concurrent Projects. 41

8. Conclusion. 42


lIST OF TABLES

Table II Principal Work Activities for Contract no. HK/2009/02

Table IV Principal Work Activities for Contract no. HY/2009/19

Table V Principal Work Activities for Contract no. HK/2012/08

Table VI Principal Work Activities for Contract no. HY/2010/08

Table 2.1 Schedule 2 Designated Projects under this Project

Table 2.2 Details of Individual Contracts under the Project

Table 2.3 Contact Details of Key Personnel

Table 2.5 Principal Work Activities for Contract no. HK/2009/02

Table 2.7 Principal Work Activities for Contract no. HY/2009/19

Table 2.8 Principal Work Activities for Contract no. HK/2012/08

Table 2.9 Principal Work Activities for Contract no. HY/2010/08

Table 3.1 Noise Monitoring Stations

Table 3.2 Air Monitoring Stations

Table 3.3 Marine Water Quality Stations for Water Quality Monitoring

Table 3.4 Marine Water Quality Monitoring Frequency and Parameters

Table 3.5 Marine Water Quality Stations for Enhanced Water Quality Monitoring

Table 4.1 Noise Monitoring Station for Contract nos. HK/2009/02

Table 4.3 Noise Monitoring Stations for Contract no. HY/2009/19

Table 4.4 Noise Monitoring Stations for Contract no. HY/2010/08

Table 4.6 Air Monitoring Station for Contract no. HK/2009/02

Table 4.8 Air Monitoring Stations for Contract no. HY/2009/19

Table 4.9 Air Monitoring Station for Contract no. HK/2012/08

Table 4.10 Air Monitoring Stations for Contract no. HY/2010/08

Table 4.12 Water Monitoring Stations for Contract no. HK/2009/02

Table 4.13 Water Monitoring Stations for Contract no. HK/2012/08

Table 4.16 Water quality monitoring Stations for Contract no. HY/2010/08

Table 4.17 Enhance Dissolved Oxygen Monitoring Stations for Contract no. HY/2010/08

Table 4.18 Details of Waste Disposal for Contract no. HK/2009/01

Table 4.19 Details of Waste Disposal for Contract no. HK/2009/02

Table 4.20 Details of Waste Disposal for Contract no. HY/2009/15

Table 4.21 Details of Waste Disposal for Contract no. HY/2009/19

Table 4.22 Details of Waste Disposal for Contract no. HK/2012/08

Table 4.23 Details of Waste Disposal for Contract no. HY/2010/08

Table 6.1 Cumulative Statistics on Complaints

Table 6.2 Cumulative Statistics on Successful Prosecutions

 

 

lIST OF FIGUREs

 

Figure 2.1 Project Layout

Figure 2.2 Project Organization Chart

Figure 3.1 Locations of Environmental Monitoring Stations

 

 

 

lIST OF APPENDIces

 

Appendix 2.1 Environmental Mitigation Implementation Schedule

Appendix 3.1 Action and Limit Level

Appendix 4.1 Noise Monitoring Graphical Presentations

Appendix 4.2 Air Quality Monitoring Graphical Presentations

Appendix 4.3 Water Quality Monitoring Graphical Presentations

Appendix 5.1 Event Action Plans

Appendix 6.1 Complaint Log

Appendix 7.1 Construction Programme of Individual Contracts

EXECUTIVE SUMMARY

  1. This is the Quarterly Environmental Monitoring and Audit (EM&A) Report June 2018 to August 2018 prepared for the Project of Wan Chai Development Phase II and Central-Wanchai Bypass under Environmental Permit no. EP-356/2009 and Further Environmental permit nos. FEP-02/356/2009, FEP-03/356/2009, FEP-04/356/2009, FEP-06/356/2009 and FEP-07/356/2009. This report presents the environmental monitoring and audit findings and information during the period from 27th June 2018 to 26th August 2018. The cut-off date of reporting is at 26th of each reporting period.

 

Construction Activities for the Reported Period

  1. Contract no. HK/2009/02 was commenced on 5 July 2010. During this reporting period, the principal work activities for Contract no. HK/2009/02 are summarized as below:

Table II Principal Work Activities for Contract no. HK/2009/02

June 2018

July 2018

August 2018

Ÿ   Removal of TWCR4

Ÿ   Removal of TWCR4

Ÿ   Removal of TWCR4

 

  1. Contract no. HY/2009/19 was commenced on 24 March 2011. During this reporting period, the principal work activities for Contract no. HY/2009/19 are summarized as below:

Table IV Principal Work Activities for Contract no. HY/2009/19

June 2018

July 2018

August 2018

Ÿ  Nil

Ÿ  Nil

Ÿ   Nil

 

  1. Contract no. HK/2012/08 was commenced on 5 March 2013. During this reporting period, the principal work activities for Contract no. HK/2012/08 are summarized as below:

Table V Principal Work Activities for Contract no. HK/2012/08

June 2018

July 2018

August 2018

Ÿ  Nil

Ÿ  Nil

Ÿ   Nil

 

  1. Contract no. HY/2010/08 was commenced on 21 March 2013. During this reporting period, the principal work activities for Contract no. HY/2010/08 are summarized as below:

Table VI Principal Work Activities for Contract no. HY/2010/08

June 2018

July 2018

August 2018

Ÿ Seawall reinstatement

Ÿ  Seawall reinstatement

Ÿ Seawall reinstatement

 

 

 

 

 

 

 

Noise Monitoring

  1. With respect to the shift in major construction site portions at Wan Chai North, the noise monitoring station M1a Harbour Sports Centre was finely adjusted from East of Harbour Road Sports Centre to West of Harbour Road Sports Centre on 21 June 2016.
  2. Noise monitoring during day time and evening time were conducted at the M1a, M2b, M3a, M4b, M5b and M6 on a weekly basis in the reporting period. The Action and Limit level exceedances recorded in the reporting period are listed below. Investigation found that exceedances were not related to the Project.
  3. With respect to the demolition of Ex-Harbour Road Sports Centre, the respective noise monitoring station M1a Harbour Road Sports Centre were finely adjusted on 16 and 25 May 2017 and thereafter to the Footbridge at Harbour Road Sports Centre for noise monitoring.
  4. One limit level exceedance was recorded at M6 HK Baptist Church Henrietta Secondary School on 7 June 2018 in the June 2018 reporting period. After the investigation, the exceedance recorded was considered as non-project related.
  5. No action or limit level exceedance was recorded in the July 2018 reporting period.
  6. No action or limit level exceedance was recorded in the August 2018 reporting period.

Air Quality Monitoring

  1. No action or limit level exceedance was recorded in the June2018 reporting period.
  2. No action or limit level exceedance was recorded in the July 2018 reporting period.
  3. No action or limit level exceedance was recorded in the August 2018 reporting period.
  4. With respect to the proposed demolition of eastern podium of Oil Street Site Office, the respective air quality monitoring station CMA1b Oil Street Site Office was finely adjusted from East podium of the Oil Street Site Office to the West podium of the Oil Street Site Office on 21 December 2016
  5. The location ID of air monitoring station CMA1b was updated as Oil Street Site Office in April 2013.
  6. With respect to the area handover, the air quality monitoring station CMA5a at Children Playgrounds opposite to the Pedestrian Plaza was relocated to the Pedestrian Plaza on 3 December 2014. The station reference and location ID of the air quality monitoring station CMA5a was updated as CMA5b and Pedestrian Plaza respectively.
  7. 1hr and 24hr TSP monitoring were conducted at CMA1b, CMA2a, CMA3a, CMA4a, CMA5b and CMA6a in the reporting period.

Water Quality Monitoring

  1. Action and Limit level of water quality monitoring was transited from dry season to wet season from 01 April 2018.
  2. Due to the hoisting of Amber Rainstorm Warning Signal, the water quality monitoring event on 6 June 2018 during ebb tide and 13 June 2018 during flood tide were cancelled.
  3. Due to the hoisting of Tropical Cyclone Warning Signal No. 3, the water quality monitoring event on 18 July 2018 during flood tide was cancelled.
  4. Due to the hoisting of Amber Rainstorm Warning Signal, the water quality monitoring event scheduled on 11 August 2018 during ebb tide and 17 August 2018 during flood tide were cancelled.
  5. No action or limit level exceedance was recorded in the June 2018 reporting period.
  6. Total 2 action level exceedances of dissolved oxygen, 2 limit level exceedances of turbidity, 1 action level exceedance of suspended solids and 1 limit level exceedance of suspended solids were recorded in the July 2018 reporting period. After the investigation, the exceedances recorded were considered as non-project related.
  7. Total 2 limit level exceedance of turbidity, 1 action level exceedance of turbidity and 1 limit level exceedance of suspended solids were recorded in the August 2018 reporting period. After the investigation, the exceedances recorded were considered as non-project related.
  8. With respect to the reinstatement of the silt screen system for Cooling Water Intakes P7, P8, P9 and WSD Water Intake RW21, the respective water quality monitoring was reverted to the previous monitoring location for Water Quality Monitoring Station RW21-P789 from water quality stations RW21-P789 East (RW21-P789E) and RW21-P789 West (RW21-P789W) from 25 January 2017 onwards.
  9. With respect to the removal of silt screen at WQM station RW21-P789 on 26 November 2016, the respective water quality monitoring at RW21-P789 was adjusted to RW21-P789E and RW21-P789W since 28 November 2016 ebb-tide.
  10. With respect to the temporarily suspension of marine construction works at WCR3 Area by Contract HK/2009/02, the installed silt screen for intake group (P7, P8, P9 and WSD21) was removed on 26 November 2016.
  11. As advised by the Contractor of HK/2009/01, all silt screen remains removal works at P1, P3, P4, P5 and C1 water quality monitoring stations were completed on 8 May 2016.
  12. With respect to the marine works undertaken at WCR3 by Contract HK/2009/02, the respective water quality monitoring station C1 associated with Contract HK/2009/01 was updated as in association with Contract HK/2009/01 and Contract HK/2009/02.
  13. With respect to the marine works undertaken at CBTS by Contract HY/2010/08, the respective water quality monitoring station C7 associated with Contract HY/2009/15 was updated as in association with Contract HY/2009/15 and Contract HY/2010/08.
  14. With respect to the marine works undertaken at HKCEC2 by Contract HK/2012/08, the respective water quality monitoring station WSD19, P1, P3, P4, and P5 were associated with Contract HK/2012/08.
  15. Enhanced DO monitoring at Windsor House Cooling (Station Ref: C7) was temporarily suspended since 22 October 2014 with respect to the formation of temporary reclamation zone TS3
  16. Referring to CWB RSS confirmation on the completion of marine construction activities within the Ex-PCWA area and the completion of the post construction water quality monitoring, the respective Enhance DO Monitoring within Ex-PCWA for monitoring station Ex-PCWA SE and Ex-PCWA SW was temporarily suspended since 07 March 2017 ebb tide onwards.
  17. Water quality monitoring station C7 and Enhance DO monitoring station C6 shall be associated with Contract HY/2010/08, upon confirmation of marine construction works completion under Contract HY/2009/15 at CBTS area and Ex-PCWA area since 19 June 2017.
  18. Enhanced DO monitoring at Windsor House Cooling (Station Ref: C7) was resumed from 1 February 2018 onwards with respect to the completion of removal of temporary reclamation zone.
  19. Referring to CWB RSS confirmation on the completion of marine construction activities within the TS3 area and the completion of the post construction water quality monitoring, the respective Enhance DO Monitoring within TS3 for monitoring station C6 and C7 was temporarily suspended since 05 March 2018 onwards.

 

Complaints, Notifications of Summons and Successful Prosecutions

  1. Two environmental complaints were received in the June 2018 reporting period.

 

An EPD complaint was referred to the ET on 25 June 2018 (CASE Ref: H05/RS/000015459-18). The complainant reported that muddy water discharge was found at the site outside Lung Wo Road on 5 June 2018 afternoon. ET confirmed with the Resident Site Staff that installation of metal formwork at seawall was carried out on 5 June 2018 afternoon and mitigation measure including placing rock fill material on slope surface was implemented at the concerned location to reduce surface runoff. Follow up site inspection was conducted by the Environmental Team on 26 June 2018, no muddy water discharge or surface runoff related water quality impact was observed at construction area under HK/2012/08 near the concerned area Nevertheless, in view of the public concern, the Contractor of HK/2012/08 was reminded to provide addition tarpaulin covering to the slope surface along the seawall around the concerned location to reduce the potential surface runoff. In addition, the Contractor of HK/2012/08 is recommended to maintain regular checking on the embankment condition to ensure no gap / void to avoid potential seepage / surface runoff to nearby water.

 

An EPD complaint was referred to the ET on 25 June 2018 (CASE Ref: H05/RS/00015954-18). The complainant reported that construction dust and muddy water discharge was found at the site near Wan Chai Pier on 11 June 2018 afternoon. ET confirmed with the Resident Site Staff that marine construction activity of removal of TWCR4 and stockpile of fill material at WCR3 Area were conducted under the Contractor of HK/2009/02 on 11 June 2018 afternoon. The Contractor of HK/2009/02 reported that double silt curtain was in place as mitigation measures during the marine activity and regular spraying water was provided as dust mitigation measures at WCR3 Area. Follow-up inspection was conducted on 28 June 2018, excavation works was observed at WCR3 Area and mitigation measures including watering during excavation was generally in place. Other dust mitigation measure including covering the stockpile material and watering the dusty surface and haul road were generally in place. No particular dust impact was observed. No muddy water discharge or surface runoff related water quality monitoring impact was observed at Contract HK/2009/02 site area. Mitigation measures for marine activity includes providing double layers of silt curtain to enclose the marine activity area was generally in place and additional tarpaulin was provided to cover the temporary cut slope to avoid the potential surface runoff. In view of the public concern, the Contractor of HK/2009/02 was reminded to keep review the performance of dust mitigation measures including watering during excavation and material handling, covering the stockpile material and watering the dusty surface and haul road to avoid potential dust impact and minimize any potential dust impact to the surroundings. The Contractor of HK/2009/02 is also reminded to maintain regular checking on the embankment, silt curtain and tarpaulin condition to ensure no gap / void to avoid potential water quality related impact.

 

  1. No environmental complaint was received in the July and August 2018 reporting period.

1. Introduction

1.1          Scope of the Report

1.1.1.     Lam Geotechnics Limited (LGL) has been appointed to work as the Environmental Team (ET) under Environmental Permit no. EP-356/2009 and Further Environmental permit nos. FEP-02/356/2009, FEP-03/356/2009, FEP-04/356/2009, FEP-06/356/2009, FEP-07/356/2009 and FEP-08/356/2009 to implement the Environmental Monitoring and Audit (EM&A) programme as stipulated in the EM&A Manual of the approved Environmental Impact Assessment (EIA) Report for Wan Chai Development phase II and Central-Wan Chai Bypass (Register No.: AEIAR-125/2008) and in the EM&A Manual of the approved EIA Report for Central-Wan Chai Bypass and Island Eastern Corridor Link (Register No. AEIAR-041/2001).

1.1.2.     This report presents the environmental monitoring and auditing work carried out in accordance to the Section 10.4 of EM&A Manual and Environmental Monitoring and Audit Requirements under Particular Specification Section 27.

1.1.3.     This report documents the finding of EM&A works during the period from 27th June 2018 to 26th August 2018.

1.2          Structure of the Report

 

Section 1 Introduction details the scope and structure of the report.

 

Section 2 Project Background summarizes background and scope of the project, site description, project organization and contact details of key personnel during the reporting period.

 

Section 3 Monitoring Requirements summarizes all monitoring parameters, monitoring locations, monitoring frequency, duration and action plan.

 

Section 4 Monitoring Results summarizes the monitoring results obtained in the reporting period.

 

Section 5 Compliance Audit summarizes the auditing of monitoring results, all exceedances environmental parameters.

 

Section 6 Complaints, Notification of summons and Prosecution summarizes the cumulative statistics on complaints, notification of summons and prosecution

 

Section 7 Cumulative Construction Impact due to the Concurrent Projects summarizes the relevant cumulative construction impact due to the concurrent activities of the concurrent Projects.

 

Section 8 Conclusion

2. Project Background

2.1          Background

2.1.1.     Wan Chai Development phase II and Central-Wan Chai Bypass and Central-Wan Chai Bypass and Island Eastern Corridor Link (hereafter called the Project) are Designed Project (DP) under the Environmental Impact Assessment Ordinance (Cap. 499) (EIAO). The Environmental Impact Assessment (EIA) Reports for Central-Wan Chai Bypass and Island Eastern Corridor Link (Register No. AEIAR-041/2001) and Wan Chai Development phase II and Central-Wan Chai Bypass (Register No.: AEIAR-125/2008) have been approved on 31 August 2001 and 11 December 2008 respectively.

2.1.2.     The key purpose of Wan Chai Development Phase II (WDII) is to provide land at Wan Chai North and North Point for construction of the Central-Wan Chai Bypass and Island Eastern Corridor Link (CWB). Land formed under the project will be developed as a world-class waterfront promenade joining that at the new Central waterfront for public enjoyment.

2.1.3.     There is a compelling and present need for the CWB to provide relief to the very congested east-west Connaught Road Central/Harcourt Road / Gloucester Road Corridor (the Corridor) which is currently operating beyond its capacity. The CWB will provide relief to the existing congestion along the Corridor and cater for the anticipated growth of traffic on Hong Kong Island. Without the CWB and its access roads, there will not be sufficient capacity to serve the heavy traffic demands at both strategic and local levels.

 

2.2          Scope of the Project and Site Description

2.2.1.     The Project is located mainly in Wan Chai North, Causeway Bay and North Point, and is demarcated by Gloucester Road and Victoria Park Road to the south, Fenwick Pier Street to the west and Tong Shui Road Interchange to the east, as shown in Figure 2.1.

2.2.2.     The study area encompasses existing developments along the Wan Chai, Causeway Bay and North Point shorelines. Major land uses include the Hong Kong Convention & Exhibition Centre (HKCEC) Extension, the Wan Chai Ferry Pier, the ex-Wan Chai Public Cargo Working Area (ex-PCWA), the Royal Hong Kong Yacht Club (RHKYC), the Police Officers' Club, the Causeway Bay Typhoon Shelter (CBTS) and commercial and residential developments.

2.2.3.     The scope of the Project comprises:

          Land formation for key transport infrastructure and facilities, including the Trunk Road (i.e. CWB) and the associated slip roads for connection to the Trunk Road and for through traffic from Central to Wan Chai and Causeway Bay. The land formed for the above transport infrastructure will provide opportunities for the development of an attractive waterfront promenade for the enjoyment of the public

          Reprovisioning / protection of the existing facilities and structures affected by the land formation works mentioned above

          Extension, modification, reprovisioning or protection of existing storm water drainage outfalls, sewerage outfalls and watermains affected by the revised land use and land formation works mentioned above

          Upgrading of hinterland storm water drainage system and sewerage system, which would be rendered insufficient by the land formation works mentioned above

          Provision of the ground level roads, flyovers, footbridges, necessary transport facilities and the associated utility services

          Construction of the new waterfront promenade, landscape works and the associated utility services

          The Trunk Road (i.e. CWB) within the study area and the associated slip roads for connection to the Trunk Road.

 

2.2.4.     The project also contains various Schedule 2 DPs that, under the EIAO, require Environmental Permits (EPs) to be granted by the DEP before they may be either constructed or operated. Table 2.1 summarises the five individual DPs under this Project. Figure 2.1 shows the locations of these Schedule 2 DPs.

Table 2.1 Schedule 2 Designated Projects under this Project

Item

Designated Project

EIAO Reference

Reason for inclusion

DP1

Central-Wanchai Bypass (CWB) including its road tunnel and slip roads

Schedule 2, Part I, A.1 and A.7

Trunk road and road tunnel more than 800 m in length

DP2

Road P2 and other roads which are classified as primary/district distributor roads

Schedule 2, Part I, A.1

Primary / district distributor roads

DP3

Reclamation works including associated dredging works

Schedule 2, Part I, C.1 and C.12

Reclamation more than 5 ha in size and a dredging operation less than 100 m from a seawater intake point

DP5

Wan Chai East Sewage Outfall

Schedule 2, Part I, F.5 and F.6

Submarine sewage pipelines with a total diameter more than 1,200 mm and include a submarine sewage outfall

DP6

Dredging for the Cross-harbour Water Mains from Wan Chai to Tsim Sha Tsui

Schedule 2, Part I, C.12

A dredging operation less than 100 m from a seawater intake point

 

 

2.3          Division of the Project Responsibility

2.3.1       Due to the multi-contract nature of the Project, there are a number of contracts sub-dividing the whole works area into different work areas to be commenced. Contractors of individual contracts will be required by the EP holder to apply Further Environmental Permits (FEP) such that the impact monitoring stations are sub-divided accordingly to facilitate the implementation of EM&A programme and to streamline the EM&A reporting for individual FEP holders correspondingly.

2.3.2       The details of individual contracts are summarized in Table2.2.

Table 2.2 Details of Individual Contracts under the Project

Contract No.

Contract Title

Associated DP(s)

Construction Commencement Date

HK/2009/01

Wan Chai Development Phase II Central Wanchai Bypass at Hong Kong Convention and Exhibition Centre

DP3, DP6

23 July 2010

(Completed)

DP1, DP2

25 August 2011

(Completed)

HK/2009/02

Wan Chai Development Phase II Central Wan Chai Bypass at WanChai East

DP3, DP5

5 July 2010

DP1

26 April 2011

HY/2009/11

Wan Chai Development Phase II and Central Wan Chai Bypass North Point Reclamation

DP3

17 March 2010

(Completed)

HY/2009/15

Central-Wanchai Bypass Tunnel (Causeway Bay Typhoon Shelter Section)

DP3

10 November 2010

(Completed)

DP1

13 July 2011

(Completed)

HK/2010/06

Wan Chai Development Phase II-Central-Wan Chai Bypass over MTR Tsuen Wan Line

DP3

22 March 2011

(Completed)

04/HY/2006

Reconstruction of Bus Terminus near Man Yiu Street and Man Kwong Street

DP1

September 2010

(Completed)

HY/2009/17

Central - Wan Chai Bypass (CWB) at FEHD Whitfield Depot - Advanced piling works.

DP1

5 October 2010

(Completed)

HY/2009/18

Central - Wan Chai Bypass (CWB) Central Interchange

DP1

10 March 2014

(Completed)

HY/2009/19

Central - Wanchai Bypass Tunnel (North Point Section) and Island Eastern Corridor Link

DP1

24 March 2011

HK/2012/08

Wan Chai Development Phase II Central- Wan Chai Bypass at Wan Chai

West

DP1,DP2, DP3

5 March 2013

HY/2011/08

Central-Wan Chai Bypass (CWB) Tunnel Buildings, Systems and Fittings, and Works Associated with Tunnel Commissioning

DP1

8 October 2014

 

 

 

 

 

 

 

 

 

 

 

2.4          Project Organization and Contact Personnel

2.4.1.     Civil Engineering and Development Department and Highways Department are the overall project controllers for the Wan Chai Development Phase II and Central-Wan Chai Bypass respectively. For the construction phase of the Project, Project Engineer, Contractor(s), Environmental Team and Independent Environmental Checker are appointed to manage and control environmental issues.

2.4.2.     The proposed project organization and lines of communication with respect to environmental protection works are shown in Figure 2.2. Key personnel and contact particulars are summarized in Table 2.3:

Table 2.3 Contact Details of Key Personnel

Party

Role

Post

Name

Contact No.

Contact Fax

AECOM

Engineers Representative for WDII

Chief Resident Engineer

Ms. Gloria Tang

2587 1778

2587 1877

Engineers Representative for CWB

Principal Resident Engineer

Mr. Peter Poon

3912 3388

3912 3010

Chun Wo CRGL Joint Venture

Contractor under Contract no. HK/2009/02

Project Manager

Mr. Paul Yu

3658 3085

2827 9996

Quality & Environmental Manager

Mr. C.P. Ho

9191 8856

China State Construction Engineering (HK) Ltd.

Contractor under Contract no. HY/2009/15

Project Director

Mr. Chris Leung

3557 6393

2566 2192

Site Agent

Mr. Patrick Ho

 

3557 6405

Construction Manager

Mr. Tom Tong

3557 6415

Environmental Officer

Mr. Desmond Ho

3557 6347

Environmental Supervisor

Mr. Gordon Lai

6145 6365

Chun Wo - CRGL - MBEC Joint Venture

Contractor under Contract no. HY/2009/19

Project Manager

Mr. David Lau

3758 8879

3757 8901

Site Agent

Mr. William Luk

3758 6868

Deputy Site Agent

Mr. Andy Chan

9879 4325

Environmental Manager /

Environmental Officer

Mr. M.H. Isa

9884 0810

Assistant Environmental Officer

Mr. James Chan

9602 2911

Construction Manager (Marine)

Mr. Wingo Wong

9608 6366

Construction Manager (Land)

Mr. Ray Ho

Mr. Mark Mak

9834 1010

9356 4421

Construction Manager (Land)

Mr. Yung Kwok

Wah

9834 1010

Construction

Manager (Ext. Works)

Mr. Paul Wan

6629 4652

China State-

Build King Joint Venture

Contractor

under Contract

no. HK/2012/08

Project Director

Mr. C. N. Lai

9106 5806

2877 1522

Project Manager

Mr. George Cheung

9268 1918

 

Environmental Officer

Mr. James Ma

9130 9549

 

Environmental Supervisor

Mr. Y. L. Ho

9856 5669

 

China State

 

Contractor

under Contract

no. HY/2010/08

Project Director

Mr. Chris Leung

3467 4299

2566 8061

Project Manager

Mr. Chan Ying Lun

3418 3001

 

Site Agent

Mr. Thomas Lui

3557 6452

 

Marine Manager

Mr. Nickael Chan

3557 6333

 

Construction

Manager

Mr. Tom Tong

3557 6415

 

Environmental Officer

Mr. Gabriel Wong

3557 6466

 

Ramboll Hong Kong Limited

Independent Environmental Checker (IEC)

Independent Environmental Checker (IEC)

Mr. David Yeung

3465 2888

3465 2899

Lam Geotechnics Limited

Environmental Team (ET)

Environmental Team Leader (ETL)

Mr. Raymond Dai

2882 3939

2882 3331

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2.5          Principal Work and Activities

2.5.1.     During this reporting period, the principal work activities for Contract no. HK/2009/02 are summarized in Table 2.5.

Table 2.5 Principal Work Activities for Contract no. HK/2009/02

June 2018

July 2018

August 2018

Ÿ  Removal of TWCR4

Ÿ  Removal of TWCR4

Ÿ  Removal of TWCR4

 

2.5.2.     Contract no. HY/2009/19 was commenced on 24 March 2011. During this reporting period, the principal work activities for Contract no. HY/2009/19 are summarized as below:

Table 2.7 Principal Work Activities for Contract no. HY/2009/19

June 2018

July 2018

August 2018

Ÿ  Nil

Ÿ  Nil

Ÿ  Nil

 

2.5.3.     Contract no. HK/2012/08 was commenced on March 2013. During this reporting period, the principal work activities for Contract no. HK/2012/08 are summarized as below:

Table 2.8 Principal Work Activities for Contract no. HK/2012/08

June 2018

July 2018

August 2018

Ÿ  Nil

Ÿ  Nil

Ÿ  Nil

 

2.5.4.     Contract no. HY/2010/08 was commenced on 21 March 2013. During this reporting period, the principal work activities for Contract no. HY/2010/08 are summarized as below:

Table 2.9 Principal Work Activities for Contract no. HY/2010/08

June 2018

July 2018

August 2018

Ÿ Seawall reinstatement

Ÿ Seawall reinstatement

Ÿ Seawall reinstatement

 

2.5.5.     Implementation status of the recommended mitigation measures during this reporting period is presented in Appendix 2.1.

3. Monitoring Requirements

3.1.          Noise Monitoring

Noise Monitoring Stations

3.1.1.     The noise monitoring stations for the Project are listed and shown in Table 3.1 and Figure 3.1. Appendix 3.1 shows the established Action/Limit Levels for the monitoring works.

Table 3.1 Noise Monitoring Stations

Station

Description

M1a

Footbridge at Ex-Harbour Road Sports Centre*

M2b

Noon Gun Area

M3a

Tung Lo Wan Fire Station

M4b

Victoria Centre

M5b

City Garden

M6

HK Baptist Church Henrietta Secondary School

Remarks*: With respect to the demolition of Ex-harbour Road Sports Centre, the respective noise monitoring station M1a- Harbour Road Sports Centre were finely adjusted on 16 and 25 May 2017 and thereafter to the Footbridge at Harbour Road Sports Centre for noise monitoring.

 

Noise Monitoring Parameters, Frequency and Duration

3.1.2.     The construction noise level shall be measured in terms of the A-weighted equivalent continuous sound pressure level (Leq). Leq (30 minutes) shall be used as the monitoring parameter for the time period between 0700 and 1900 hours on normal weekdays. For all other time periods, Leq (5 minutes) shall be employed for comparison with the Noise Control Ordinance (NCO) criteria. Supplementary information for data auditing, statistical results such as L10 and L90 shall also be obtained for reference.

3.1.3.     Noise monitoring shall be carried out at all the designated monitoring stations. The monitoring frequency shall depend on the scale of the construction activities. The following is an initial guide on the regular monitoring frequency for each station on a weekly basis when noise generating activities are underway:

          one set of measurements between 0700 and 1900 hours on normal weekdays.

3.1.4.     If construction works are extended to include works during the hours of 1900 0700 as well as public holidays and Sundays, additional weekly impact monitoring shall be carried out during respective restricted hours periods. Applicable permits under NCO shall be obtained by the Contractor.

3.1.5.     Real time noise shall be carried out at the designated monitoring stations. The following is an initial guide on the regular monitoring frequency for each station on a 24 hours daily basis when noise generating activities are underway:

          One set of measurements between 0700 and 1900 hours on normal weekdays.

          One set of measurements between 1900 and 2300 hours on normal weekdays and 0700 and 2300 hours on public holidays.

          One set of measurements between 2300 and 0700 hours on next day on everyday.

 

Monitoring Equipment

3.1.6.     As referred to in the Technical Memorandum issued under the NCO, sound level meters in compliance with the International Electrotechnical Commission Publications 651: 1979 (Type 1) and 804: 1985 (Type 1) specifications shall be used for carrying out the noise monitoring. Immediately prior to and following each noise measurement the accuracy of the sound level meter shall be checked using an acoustic calibrator generating a known sound pressure level at a known frequency. Measurements may be accepted as valid only if the calibration level from before and after the noise measurement agree to within 1.0 dB.

3.1.7.     Noise measurements shall not be made in fog, rain, wind with a steady speed exceeding 5 m/s or wind with gusts exceeding 10 m/s. The wind speed shall be checked with a portable wind speed meter capable of measuring the wind speed in m/s.

3.2.                Air Monitoring

Air Quality Monitoring Stations

3.2.1.     The air monitoring stations for the Project are listed and shown in Table 3.2 and Figure 3.1. Appendix 3.1 shows the established Action/Limit Levels for the monitoring works.

Table 3.2 Air Monitoring Stations

Station ID

Monitoring Location

Description

CMA1b

Oil Street Site Office**

North Point

CMA2a

Causeway Bay Community Centre

Causeway Bay

CMA3a

CWB PRE Site Office *

Causeway Bay

CMA4a

Society for the Prevention of Cruelty to Animals

Wan Chai

CMA5b

Pedestrian Plaza***

Wan Chai

CMA6a

WDII PRE Site Office *

Wan Chai

Remarks*: As per the ENPC meeting in January 2011, the monitoring stations CMA3a - Future CWB site office at Wanchai Waterfront Promenade and CMA6a - Future AECOM site office at Work Area were renamed as remark.

Remarks**: The location ID of monitoring station CMA1b was updated as Oil Street Site Office in April 2013.

Remarks***: The station ID and monitoring location was updated in December 2014 with respect to monitoring station relocation.

 

 

Air Monitoring Parameters, Frequency and Duration

3.2.2.     One-hour and 24-hour TSP levels should be measured to indicate the impacts of construction dust on air quality. The 24-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.

3.2.3.     All relevant data including temperature, pressure, weather conditions, elapsed-time meter reading for the start and stop of the sampler, identification and weight of the filter paper, and any other local atmospheric factors affecting or affected by site conditions, etc., shall be recorded down in detail.

3.2.4.     For regular impact monitoring, the sampling frequency of at least once in every six-days, shall be strictly observed at all the monitoring stations for 24-hour TSP monitoring. For 1-hour TSP monitoring, the sampling frequency of at least three times in every six-days should be undertaken when the highest dust impact occurs.

Sampling Procedure and Monitoring Equipment

3.2.5       High volume samplers (HVSs) in compliance with the following specifications shall be used for carrying out the 1-hour and 24-hour TSP monitoring:

          0.6 - 1.7 m3 per minute adjustable flow range;

          equipped with a timing / control device with +/- 5 minutes accuracy for 24 hours operation;

          installed with elapsed-time meter with +/- 2 minutes accuracy for 24 hours operation;

          capable of providing a minimum exposed area of 406 cm2;

          flow control accuracy: +/- 2.5% deviation over 24-hour sampling period;

          equipped with a shelter to protect the filter and sampler;

          incorporated with an electronic mass flow rate controller or other equivalent devices;

          equipped with a flow recorder for continuous monitoring;

          provided with a peaked roof inlet;

          incorporated with a manometer;

          able to hold and seal the filter paper to the sampler housing at horizontal position;

          easily changeable filter; and

          capable of operating continuously for a 24-hour period.

3.2.6       Initial calibration of dust monitoring equipment shall be conducted upon installation and thereafter at bi-monthly intervals. The transfer standard shall be traceable to the internationally recognized primary standard and be calibrated annually. The concern parties such as IEC shall properly document the calibration data for future reference. All the data should be converted into standard temperature and pressure condition.

Laboratory Measurement / Analysis

3.2.7       A clean laboratory with constant temperature and humidity control, and equipped with necessary measuring and conditioning instruments to handle the dust samples collected, shall be available for sample analysis, and equipment calibration and maintenance. The laboratory should be HOKLAS accredited.

3.2.8       An alternative non-HOKLAS accredited laboratory was set-up for carrying out the laboratory analysis, the laboratory equipment was approved by the ER on 8 February 2011 and the measurement procedures were witnessed by the IEC. Any measurement performed by the laboratory was be demonstrated to the satisfaction of the ER and IEC. IEC shall regularly audit to the measurement performed by the laboratory to ensure the accuracy of measurement results.

3.2.9       Filter paper of size 8" x 10" shall be labelled before sampling. It shall be a clean filter paper with no pinholes, and shall be conditioned in a humidity-controlled chamber for over 24-hours and be pre-weighed before use for the sampling.

3.2.10    After sampling, the filter paper loaded with dust shall be kept in a clean and tightly sealed plastic bag. The filter paper shall then be returned to the laboratory for reconditioning in the humidity controlled chamber followed by accurate weighing by an electronic balance with readout down to 0.1 mg. The balance shall be regularly calibrated against a traceable standard.

3.2.11    All the collected samples shall be kept in a good condition for 6 months before disposal.

 

impact monitoring for odour patrol

3.2.12    Odour patrols along the shorelines of Causeway Bay Typhoon Shelter and ex-Wan Chai Public Cargo Working Area when there is temporary reclamation in Causeway Bay Typhoon Shelter and/or in the ex-Wan Chai Public Cargo Working Area, or when there is dredging of the odorous sediment and slime at the south-western corner of the Causeway Bay Typhoon Shelter. Odour patrols will be carried out at bi-weekly intervals during July, August and September by a qualified person of the ET who shall:

        be at least 16 years of age;

        be free from any respiratory illnesses; and

        not be allowed to smoke, eat, drink (except water) or use chewing gum or sweets 30 min

        before and during odour patrol

3.2.13    Odour patrol shall be conducted by independent trained personnel / competent persons patrolling and sniffing around the shore as shown in Figure 3.1 to detect any odour at the concerned hours (afternoon is preferred for higher daily temperature).

3.2.14    The qualified person will use the nose (olfactory sensor) to sniff odours at different locations. The main odour emission sources and the areas to be affected by the odour nuisance will be identified.

3.2.15    The perceived odour intensity is to be divided into 5 levels which are ranked in the descending order as follows:

            0 - Not detected. No odour perceived or an odour so weak that it cannot be easily characterized or described;

            1 - Slight Identifiable odour, and slight chance to have odour nuisance;

            2 - Moderate Identifiable odour, and moderate chance to have odour nuisance;

            3 - Strong Identifiable, likely to have odour nuisance;

            4 - Extreme Severe odour, and unacceptable odour level.

 

3.2.16    The findings including odour intensity, odour nature and possible odour sources, and also the local wind speed and direction at each location will be recorded. In addition, some relevant meteorological and tidal data such as daily average temperature, and daily average humidity, on that surveyed day will be obtained from the Hong Kong Observatory Station for reference. The Action and Limit levels for odour patrol are shown in Appendix 3.1.

3.3    Water Quality Monitoring

3.3.1.     The EIA Report has identified that the key water quality impact would be associated with the dredging works during the construction phase. Marine water quality monitoring for dissolved oxygen (DO), suspended solid (SS) and turbidity is therefore recommended to be carried out at selected WSD flushing water intakes. The impact monitoring should be carried out during the proposed dredging works to ensure the compliance with the water quality standards.

3.3.2.     The updated EM&A Manual for EP-356/2009 (Version in March 2011) is approval by EPD on 29 April 2011. As such, the Action Level and Limit Level for the wet season (April September) will be effected and applied to the water quality monitoring data from 30 April 2011.

Water Quality Monitoring Stations

3.3.3.     Water quality monitoring was undertaken at WSD salt water intakes and cooling water intakes along the seafront of the Victoria Harbour. The proposed water quality monitoring stations of the Project are shown in Table 3.3 and Figure 3.1. Appendix 3.1 shows the established Action/Limit Levels for the monitoring works.

Table 3.3 Marine Water Quality Stations for Water Quality Monitoring

Station Ref.

Location

Easting

Northing

WSD Salt Water Intake

WSD19

Sheung Wan

833415.0

816771.0

Cooling Water Intake

C1

HKCEC Extension

835885.6

816223.0

C7

Windsor House

837193.7

816150.0

P1

HKCEC Phase I

835774.7

816179.4

P3

The Academy of performing Arts

835824.6

816212.0

P4

Shui on Centre

835865.6

816220.0

P5

Government Buildings

(Wanchai Tower / Revenue Tower / Immigration Tower)

835895.2

816215.2

Cooling Water Intake / WSD Salt Water Intake

RW21-P789

Great Eagle Centre/ Sun Hung Kai Centre/ WSD Wanchai salt water intake

836268.0

816020.0

Remarks: - The cessation of seawater intake operation for C6 was confirmed on 17 May 2011, the water monitoring at C6 was then terminated since 17 May 2011.

-   4-week post construction water quality monitoring at WSD9, WSD10, WSD15, WSD17, C8 and C9 were completed on 6 Feb 2012 and the water quality monitoring at WSD 10 and WSD15 were temporary suspended since 8 Feb 2012, and WSD9 and WSD17 was implemented with respect to HK/2009/02 from 8 Feb 2012 onwards.

-   C8 and C9 were implemented with respect to HY/2009/19 from 28 Jan 2012.

-   C8 & C9 were temporary suspended since 30 March 2013.

-   WSD7 and WSD20 water quality monitoring were temporarily suspended from 27 Apr 2012.

-   C2, C3 C4e and C4w water quality monitoring station was temporarily suspended since 24 Apr 2013

-   C5e and C5w water quality monitoring station was temporarily suspended since 29 July 2013.

-   WSD21 water quality monitoring station was temporarily suspended since 12 Mar 2014

-   WSD9 and WSD17 water quality monitoring station was temporarily suspended since 8 Sep 2014 flood tide.

-   The water quality monitoring station C1 shall be associated with Contract No. HK/2009/02 upon commencement of marine works under DP3 at WCR3 area

-   The water quality monitoring station RW21-P789 was adjusted to RW21-P789E and RW21-P789W since 28 November 2016 ebb-tide.

-   The water quality monitoring was reverted to previous monitoring station RW21-P789 from PW21-P789E and RW21-P789W from 25 January 2017 onwards.

 

Water Quality Parameters and frequency

3.3.4.     Monitoring of dissolved oxygen (DO), turbidity and suspended solids (SS) shall be carried out at WSD flushing water intakes and cooling water intakes. DO and Turbidity are measured in-situ while SS is determined in laboratory.

3.3.5.     In association with the water quality parameters, other relevant data shall also be measured, such as monitoring location/position, time, sampling depth, water temperature, pH, salinity, dissolved oxygen (DO) saturation, weather conditions, sea conditions, tidal stage, and any special phenomena and work underway at the construction site etc.

3.3.6.     The interval between two sets of monitoring should not be less than 36 hours except where there are exceedances of Action and/or Limit Levels, in which case the monitoring frequency will be increased. Table 3.4 shows the proposed monitoring frequency and water quality parameters. Duplicate in-situ measurements and water sampling should be carried out in each sampling event. For selection of tides for in-situ measurement and water sampling, tidal range of individual flood and ebb tides should be not less than 0.5m.

 

 

 

Table 3.4 Marine Water Quality Monitoring Frequency and Parameters

Activities

Monitoring Frequency1

Parameters2

During the 4-week baseline monitoring period

Three days per week, at mid-flood and mid-ebb tides

Turbidity, Suspended Solids (SS), Dissolved Oxygen (DO), pH, Temperature, Salinity

During marine construction works

Three days per week, at mid-flood and mid-ebb tides

Turbidity, Suspended Solids (SS), Dissolved Oxygen (DO), pH, Temperature, Salinity

After completion of marine construction works

Three days per week, at mid-flood and mid-ebb tides

Turbidity, Suspended Solids (SS), Dissolved Oxygen (DO), pH, Temperature, Salinity

Notes:

1.     For selection of tides for in-situ measurement and water sampling, tidal range of individual flood and ebb tides should be not less than 0.5m.

2.     Turbidity should be measured in situ whereas SS should be determined by laboratory.

 

Dissolved Oxygen and Temperature Measuring Equipment

3.3.7.     The instrument should be a portable, weatherproof dissolved oxygen measuring instrument complete with cable, sensor, comprehensive operation manuals, and use a DC power source. It should be capable of measuring:

          a dissolved oxygen level in the range of 0-20 mg/l and 0-200% saturation

          a temperature of 0-45 degree Celsius

3.3.8.     It should have a membrane electrode with automatic temperature compensation complete with a cable. Sufficient stocks of spare electrodes and cables should be available for replacement where necessary. (e.g. YSI model 59 meter, YSI 5739 probe, YSI 5795A submersible stirrer with reel and cable or an approved similar instrument).

3.3.9.     Should salinity compensation not be build-in in the DO equipment, in-situ salinity shall be measured to calibrate the DO equipment prior to each DO measurement.

Turbidity Measurement Instrument

3.3.10    The instrument should be a portable, weatherproof turbidity-measuring instrument complete with comprehensive operation manual. The equipment should use a DC power source. It should have a photoelectric sensor capable of measuring turbidity between 0‑1000 NTU and be complete with a cable (e.g. Hach model 2100P or an approved similar instrument).

Sampler

3.3.11    Water sampler comprises a transparent PVC cylinder, with a capacity of not less than 2 litres, and can be effectively sealed with latex cups at both ends. The sampler should have a positive latching system to keep it open and prevent premature closure until released by a messenger when the sampler is at the selected water depth (e.g. Kahlsico Water Sampler or an approved similar instrument).

 

Sample Container and Storage

3.3.12    Water samples for suspended solids measurement should be collected in high-density polythene bottles, packed in ice (cooled to 4蚓 without being frozen), and delivered to ALS Technichem (HK) Pty Ltd. as soon as possible after collection for analysis.

Water Depth Detector

3.3.13    A portable, battery-operated echo sounder shall be used for the determination of water depth at each designated monitoring station. This unit can either be handheld or affixed to the bottom of the workboat, if the same vessel is to be used throughout the monitoring programme.

Salinity

3.3.14    A portable salinometer capable of measuring salinity in the range of 0-40 ppt shall be provided for measuring salinity of the water at each of monitoring location.

Monitoring Position Equipment

3.3.15    A hand-held or boat-fixed type digital Global Positioning System (GPS) with waypoint bearing indication or other equivalent instrument of similar accuracy shall be provided and used during monitoring to ensure the monitoring vessel is at the correct location before taking measurements.

Calibration of In-situ Instruments

3.3.16    All in-situ monitoring instrument shall be checked, calibrated and certified by a laboratory accredited under HOKLAS or equivalent before use, and subsequently re-calibrated at 3 monthly intervals throughout all stages of the water quality monitoring. Responses of sensors and electrodes should be checked with certified standard solutions before each use. Wet bulb calibration for a DO meter shall be carried out before measurement at each monitoring location.

3.3.17    For the on site calibration of field equipment by the ET, the BS 127:1993, "Guide to Field and on-site test methods for the analysis of waters" should be observed.

3.3.18    Sufficient stocks of spare parts should be maintained for replacements when necessary. Backup monitoring equipment shall also be made available so that monitoring can proceed uninterrupted even when some equipment is under maintenance, calibration, etc.

 

Laboratory Measurement / Analysis

3.3.19    Analysis of suspended solids has been carried out in a HOKLAS accredited laboratory, ALS Technichem (HK) Pty Ltd. Water samples of about 1L shall be collected at the monitoring stations for carrying out the laboratory SS determination. The SS determination work shall start within 24 hours after collection of the water samples. The SS determination shall follow APHA 19ed or equivalent methods subject to the approval of IEC and EPD.

Enhanced Water Quality Monitoring in the ex-Wan Chai Public Cargo

Working Area and the Causeway Bay Typhoon Shelter

3.3.20    The enhanced water quality monitoring and audit programme is to avoid aggravation of odour nuisance from seawater arising from temporary reclamation in the ex-Wan Chai Public Cargo Working Area and the Causeway Bay Typhoon Shelter.

3.3.21    Dissolved oxygen monitoring at the intakes C6 and C7 in Causeway Bay Typhoon Shelter when there is temporary reclamation in Causeway Bay Typhoon Shelter and at the south-western and south-eastern corners of the ex-Wan Chai Public Cargo Working Area. The proposed water quality monitoring stations of the Project are shown in Table 3.5 and Figure 3.1.

Table 3.5 Marine Water Quality Stations for Enhanced Water Quality Monitoring

Station

Location

C6

Excelsior Hotel

C7

Windsor House

Ex-WPCWA-SW

South-western of the ex-Wan Chai Public Cargo Working Area

Ex-WPCWA-SE

South-eastern of the ex-Wan Chai Public Cargo Working Area

3.3.22    The monitoring of dissolved oxygen are to be carried out 3 days per week, at mid-flood and mid-ebb tides for 3 water depths (1m below water surface, mid-depth and 1m above sea bed, except where the water depth less than 6m, the mid-depth may be omitted. If the water depth be less than 3m, only the mid-depth will be monitored).

Daily SS Monitoring and 24 hours Turbidity Monitoring System

3.3.23    During dredging of the sediment at the south-western corner of the Causeway Bay Typhoon Shelter, daily monitoring of suspended solids and 24 hour monitoring of turbidity at the cooling water intakes (C6 and C7) shall be conducted.

3.3.24    The 24 hours monitoring of turbidty at the cooling water intakes (C6 and C7) shall be established by setting up a continuous water quality monitoring station in front of the intakes during the dredging activities. The monitoring system include the turbidity sensor and data logger which is capable of data capturing at every 5 minutes. The data shall be downloaded daily and compared with the Action and Limit level determined during the baseline water qualtiy monitoring at the cooling water intake locations.

Additional Dissovled oxygen Monitoring FOR CULVERT L WATER DISCHARGE FLOW

3.3.25    In response to the Condition 2.18 of the Environmental Permit no. EP-356/2009 requiring that a silt curtain / impermeable barrier system be installed to channel water discharge flow from Culvert L to locations outside the embayment area, a proposed replacement of the requirement with additional dissolved oxygen monitoring has been conducted at three monitoring stations, namely A, B and C between the eastern seawall of Central Reclamation Phase III and the HKCEC Extension since November 2011 under EP-356/2009 so that DO level between the eastern seawall of Central Reclamation Phase II and the HKCEC extension could be continuously monitored.

3.3.26    With respect to the commencement of dredging works under HK/2012/08 and the installation of MTR precast protection unit, the enhanced water quality monitoring for Culvert L was temporarily suspended since 24 July 2013

3.3.27    The monitoring of dissolved oxygen are to be carried out once per week, at mid-flood and mid-ebb tides for 3 water depths (1m below water surface, mid-depth and 1m above sea bed, except where the water depth less than 6m, the mid-depth may be omitted. If the water depth be equal to or less than 3m, only the mid-depth will be monitored).

4. Monitoring Results

4.0.1.     The environmental monitoring will be implemented based on the division of works areas of each designed project managed under different contracts with separate FEP applied by individual contractors. Overall layout showing work areas of various contracts, latest status of work commencement and monitoring stations is shown in Figure 2.1 and Figure 3.1. The monitoring results are presented in according to the Individual Contract(s).

4.0.2.     According to EP-364/2009/A Part B, Scale and Scope of Designated Project, Remarks (c),The permanent and temporary reclamation and associated dredging works related to the CWB construction are separately covered by environmental permit No. EP-356/2009 issued to Civil Engineering and Development Department, and marine piling works to be conducted by the Contractor of Contract no. HY/2009/19 from 28 January 2012 was considered to be governed under EP-356/2009. As the construction site area of Contract no. HY/2009/11 had already been handed over to Contract no. HY/2009/19, the designated noise, water and air quality monitoring stations for Contract no. HY/2009/11 would be shared with Contract no. HY/2009/19 from 28 January 2012.

4.0.3.     As confirmed by WDII RSS, the marine construction works under Contract HK/2009/01 have been completed since 24 July 2017, the monitoring association with Contract HK/2009/01 and relevant reporting has been ceased from November 2017. FEP-02/356/356/2009 under Contract HK/2009/01 was surrendered on 19 April 2018.

4.0.4.     As confirmed by CWB RSS, the marine construction works under Contract HY/2009/15 and relevant reporting have been completed by 19 June 2017, the monitoring association with Contract HY/2009/15 and relevant reporting has been ceased from November 2017.

  4.1.       Noise Monitoring Results

Contract no. HK/2009/02 - Wan Chai Development Phase II Central Wan Chai Bypass at WanChai East

4.1.1.     The proposed divisions of noise monitoring stations are summarized in Table 4.1 below.

Table 4.1 Noise Monitoring Station for Contract nos. HK/2009/02

Station

Description

M1a

Footbridge at Ex-Harbour Road Sports Centre

4.1.2.     No action or limit level exceedance was recorded in the June, July and August 2018 reporting period.

 

 

 

 

Contract no. HY/2009/19 Central- Wan Chai Bypass Tunnel (North Point Section) and Island Eastern Corridor Link

4.1.3.     Noise quality monitoring at M4b and M5b have been implemented with respect to HY/2009/19 since the marine bore piling work started on 28 Jan 2012.

4.1.4.     The proposed division of noise monitoring stations for Contract no. HY/2009/19 are summarized in Table 4.3 below:

Table 4.3 Noise Monitoring Stations for Contract no. HY/2009/19

Station

Description

M4b

Victoria Centre

M5b

City Garden

M6

HK Baptist Church Henrietta Secondary School

 

 

 

 

 

4.1.1       One limit level exceedance was recorded at M6 - HK Baptist Church Henrietta Secondary School on 7 June 2018 in the June 2018 reporting period.

No construction work was conducted under HY/2009/19 around the monitoring location and nearby traffic noise was observed as major noise source during monitoring. As such, the exceedance was considered as non-Project related. No action or limit level exceedance was recorded in the April 2018 reporting month.

4.1.2       No action or limit level exceedance was recorded in the July and August 2018 reporting month.

Contract no. HY/2010/08-Central-Wanchi Bypass Tunnel (Slip Road 8 Section)

4.1.5.     The proposed division of noise monitoring stations are summarized in Table 4.4 below.

Table 4.4 Noise Monitoring Station for Contract no. HY/2010/08

Station

Description

M2b

Noon Gun Area

M3a

Tung Lo Wan Fire Station

 

 

 

4.1.6.     No action or limit level exceedance was recorded in the June, July and August 2018 reporting period.

4.1.7.     All Noise monitoring results measured in this reporting period are reviewed and summarized. Details of noise monitoring results and graphical presentation can be referred in Appendix 4.1.

  4.2.       Air Monitoring Results

4.2.1       1hr and 24hr TSP monitoring were conducted at CMA1b, CMA2a, CMA3a, CMA4a, CMA5b and CMA6a in the reporting period.

Contract no. HK/2009/02 - Wan Chai Development Phase II Central Wan Chai Bypass at WanChai East

4.2.2       Air monitoring was commenced in mid-January 2011 for the land-filling work for Contract no. HK/2009/02. The proposed division of air monitoring stations is summarized in Table 4.6 below.

Table 4.6 Air Monitoring Station for Contract no. HK/2009/02

Station

Description

CMA3a

CWB PRE Site Office

CMA4a

Society for the Prevention of Cruelty to Animals

4.2.3       No action or limit exceedance was recorded in in the June, July and August 2018 reporting period. .

 

Contract no. HY/2009/19 Central- Wan Chai Bypass Tunnel (North Point Section) and Island Eastern Corridor Link

4.2.4       Air monitoring at CMA1b and CMA2a have been implemented with respect to HY/2009/19 since the marine bore piling works started on 28 Jan 2012. No exceedance was recorded in the reporting period.

4.2.5       The proposed division of air monitoring stations is summarized in Table 4.8 below.

Table 4.8 Air Monitoring Stations for Contract no. HY/2009/19

Station

Description

CMA1b

Oil Street Site Office

CMA2a

Causeway Bay Community Centre

4.2.6       No action or limit exceedance was recorded in in the June, July and August 2018 reporting period.

 

 

 

 

 

Contract no. HK/2012/08- Wan Chai Development Phase II Central-Wan Chai Bypass at Wan Chai West

4.2.7       The proposed division of air monitoring stations are summarized in Table 4.9 below.

Table 4.9 Air Monitoring Stations for Contract no. HK/2012/08

Station

Description

CMA5b

Pedestrian Plaza

CMA6a

WDII PRE Site Office

4.2.8       No action or limit exceedance was recorded in in the June, July and August 2018 reporting month.

 

Contract no. HY/2010/08- Central-Wanchai Bypass Tunnel (Slip Road 8 Section)

4.2.9       The proposed division of air monitoring stations are summarized in Table 4.10 below.

Table 4.10 Air Monitoring Stations for Contract no. HY/2010/08

Station

Description

CMA3a

CWB PRE Site Office

4.2.10    No action or limit exceedance was recorded in in the June, July and August 2018 reporting month.

 

 

 

 

 

 

 

 

 

 

 

  4.3.       Water Monitoring Results

Contract no. HK/2009/02 - Wan Chai Development Wan Chai Development Phase II Central Wan Chai Bypass at WanChai East

4.3.1       Water quality monitoring for Contract no. HK/2009/02 was commenced on 8 July 2010. The proposed division of water monitoring stations is summarized in Table 4.12 below.

Table 4.12 Water Monitoring Stations for Contract no. HK/2009/02

Station Ref.

Location

Easting

Northing

Cooling Water Intake

C1

HKCEC Extension

835885.6

816223.0

Cooling Water Intake

RW21-P789

Great Eagle Centre/ Sun Hung Kai Centre/WSD Wanchai salt water intake / China Resources Building

836268.0

816020.0

 

4.3.2      No action or limit level exceedance was recorded in the June 2018 reporting period.

4.3.3      1 action level exceedance of dissolved oxygen was recorded at RW21-P789 on 20 July 2018 during flood tide in the July 2018 reporting period.

Removal of temporary seawall block at Portion 3 & 4 under Contract HK/2009/02 was conducted on the monitoring date. Location of the construction area was at downstream of monitoring station RW21-P789 during the monitoring period and contractor mitigation measure including the use of silt curtain and installation of silt screen was general in order. In view of the above, it is considered the exceedance was not related to Project work. No exceedance was recorded on the subsequent monitoring on 21 July 2018 Flood tide.

4.3.4      No action or limit level exceedance was recorded in the August 2018 reporting period.

 

 

 

 

 

 

 

 

 

Contract no. HK/2012/08 - Wan Chai Development Phase II Central- Wan Chai Bypass at Wan Chai West

4.3.5       Water monitoring for Contract no. HK/2012/08 was commenced on 5 March 2013. The proposed division of water monitoring stations are summarized in Table 4.13 below.

Table 4.13 Water Monitoring Stations for Contract no. HK/2012/08

Station Ref.

Location

Easting

Northing

WSD Salt Water Intake

WSD19

Sheung Wan

833415.0

816771.0

Cooling Water Intake

P1

HKCEC Phase I

835774.7

816179.4

P3

The Academy of performing Arts

835824.6

816212.0

P4

Shui on Centre

835865.6

816220.0

P5

Government Buildings

(Wanchai Tower / Revenue Tower / Immigration Tower)

835895.2

816215.2

4.3.6      No action or limit level exceedance was recorded in the June 2018 reporting period.

4.3.7      1 action level of dissolved oxygen was recorded at WSD19 on 3 July 2018 during ebb tide in the July 2018 reporting period. No marine construction activity under Contract HK/2012/08 was conducted on the monitoring date. In view of above, it is considered the exceedance was not related to Project work. No exceedance was recorded in the subsequent monitoring on 5 July 2018 Flood tide.

1 action level of suspended solids was recorded at WSD19 on 14 July 2018 during flood tide in the July 2018 reporting period. No marine construction activity under Contract HK/2012/08 was conducted on the monitoring date. In view of above, it is considered the exceedance was not related to Project work.

1 limit level of suspended solids and 1 limit level of turbidity was recorded at WSD19 on 16 July 2018 during flood tide in the July 2018 reporting period. No marine construction activity under Contract HK/2012/08 was conducted on the monitoring date. In view of above, it is considered the exceedance was not related to Project work.

1 limit level of turbidity was recorded at WSD19 on 20 July 2018 during flood tide in the July 2018 reporting period. No marine construction activity under Contract HK/2012/08 was conducted on the monitoring date. In view of above, it is considered the exceedance was not related to Project work.

4.3.8      1 limit level exceedance of turbidity and one limit level of suspended solids were recorded at WSD19 on 15 August 2018 during flood tide in the August 2018reporting period. No marine construction activity under Contract HK/2012/08 was conducted on the monitoring date. In view of above, it is considered the exceedance was not related to Project work.

1 limit level exceedance of turbidity was recorded at WSD19 on 15 August 2018 during ebb tide in the August 2018 reporting period. No marine construction activity under Contract HK/2012/08 was conducted on the monitoring date. In view of above, it is considered the exceedance was not related to Project work.

1 action level exceedance of turbidity was recorded at P4 on 15 August 2018 during flood tide in the reporting period. No marine construction activity was conducted under Contract HK/2012/08 on the monitoring date, while the location of the construction area was at downstream of monitoring station P4 during monitoring period. In view of the above, it is considered that the exceedance was not related to Project works. No exceedance was recorded in the subsequent monitoring on 15 August 2018 during ebb tide.

 

Contract no. HY/2010/08- Central-Wanchai Bypass Tunnel (Slip Road 8 Section)

4.3.9 The proposed division of water quality monitoring stations are summarized in Table 4.16 and Table 4.17 below:

Table 4.16 Water quality monitoring Stations for Contract no. HY/2010/08

Station Ref.

Location

Easting

Northing

Cooling Water Intake

C7

Windsor House

837193.7

816150.0

4.3.10    No action or limit level exceedance was recorded in the June, July and August 2018 reporting period.

Table 4.17 Enhance Dissolved Oxygen Monitoring Stations for Contract no. HY/2010/08

Station Ref.

Location

C6

Excelsior Hotel

C7

Windsor House Cooling

4.3.11    Referring to CWB RSS confirmation on the completion of marine construction activities within the TS3 area and the completion of the post construction water quality monitoring, the respective Enhance DO Monitoring within TS3 for monitoring station C6 and C7 was temporarily suspended since 05 March 2018 onwards.

 

 

 

 

 

4.4  Waste Monitoring Results

Contract no. HK/2009/02 - Wan Chai Development Phase II Central Wan Chai Bypass at WanChai East

4.4.1       Inert C&D waste and no Non-inert C&D waste were disposed of for the site works in this reporting period. Details of the waste flow table are summarized in Table 4.19.

Table 4.19 Details of Waste Disposal for Contract no. HK/2009/02

Waste Type

Quantity this quarter

Cumulative Quantity-to-Date

Disposal / Dumping Grounds

Inert C&D materials disposed, m3

13838.3

301565.9

TKO137/ TM 38

Inert C&D materials recycled, m3

NIL

18161

N/A

Non-inert C&D materials disposed, m3

NIL

1515.103

SENT Landfill

Non-inert C&D materials recycled, m3

N/A

N/A

N/A

Chemical waste disposed, kg

NIL

13860

SENT Landfill

Marine Sediment (Type 1 Open Sea Disposal), m3

NIL

240222

(Bulk volume)

South of Cheung Chau

 

Marine Sediment (Type 1 Open Sea Disposal (Dedicate Sites) & Type 2 Confined Marine Disposal), m3 *

NIL

146445

(Bulk volume)

East of Sha Chau

4.4.2       There was no Marine Sediment (Type 1 Open Sea Disposal) and no Marine Sediment (Type 1- Open Sea Disposal (Dedicate Sites) & Type 2- Confined Marine Disposal) disposed of in this reporting quarter.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Contract no. HY/2009/15 - Central-Wanchai Bypass Tunnel (Causeway Bay Typhoon Shelter Section)

4.4.3       There was no Inert C&D waste disposed in this reporting period and no non-inert C&D waste was disposed in this reporting period. Details of the waste flow table are summarized in Table 4.20.

Table 4.20 Details of Waste Disposal for Contract no. HY/2009/15

Waste Type

Quantity this quarter

Cumulative Quantity-to-Date

Disposal / Dumping Grounds

Remarks

Inert C&D materials disposed, m3

NIL

141579.2

Tuen Mun Area 38

NIL

NIL

65216

TKO137 FB

NIL

Inert C&D materials recycled, m3

NIL

8127.21

HY/2010/08

NIL

NIL

304

Ex-PCWA

NIL

NIL

111.9

TS4

NIL

Non-inert C&D materials disposed, m3

NIL

252.2

SENT Landfill

 

NIL

Non-inert C&D materials recycled, kg

NIL

299361.5

N/A

NIL

Chemical waste disposed, kg

NIL

8,200

N/A

NIL

Marine Sediment (Type 1 Open Sea Disposal) , m3

NIL

156909

(Bulk Volume)

South of Cheung Chau

Dredging from TCBR1E / TCBR1W / TCBR2/ TCBR3 / TCBR4 / Maintenance dredging

Marine Sediment (Type 1 Open Sea Disposal (Dedicate Sites) & Type 2 Confined Marine Disposal) , m3

NIL

327746

(Bulk Volume)

 

East of Sha Chau

Dredging from TCBR1E / TCBR1W / TCBR2/ TCBR3 / TCBR4 / Maintenance dredging

Marine Sediment (Type 3 Special Treatment / Disposal contained in Geosynthetic Containers)

NIL

12640

(Bulk Volume)

 

East of Sha Chau

Dredging from TCBR1W / Maintenance dredging

Marine Sediment (Type 2 Confined Marine Disposal), m3

NIL

(Bulk Volume)

9350

(Bulk Volume)

East of Sha Chau

Dredging from Eastern Breakwater of CBTS

Marine Sediment (Type 1 Open Sea Disposal) , m3

NIL

(Bulk Volume)

600

(Bulk Volume)

East Sha Chau / South of The Brothers

Dredging from Phase 3 Mooring Re-arrangement

Marine Sediment (Type 2 Confined Marine Disposal) , m3

NIL

(Bulk Volume)

14,780

(Bulk Volume)

South of The Brothers

Dredging from Phase 3 Mooring Re-arrangement

Marine Sediment (Type 3 Special Treatment / Disposal contained in Geosynehetic Containers) , m3

NIL

(Bulk Volume)

2,760

(Bulk Volume)

South of The Brothers

Dredging from Phase 3 Mooring Re-arrangement

4.4.4       There were no marine sediments Type1- Open Sea Disposal and no Type 1 Open Sea Disposal (Dedicate Sites) & Type 2 Confined Marine Disposal in this reporting quarter.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Contract no. HY/2009/19 Central- WanChai Bypass Tunnel (North Point Section) and Island Eastern Corridor Link

4.4.5       No Inert and non-inert C&D waste were disposed of in this reporting quarter. Details of the waste flow table are summarized in Table 4.21.

Table