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-364/2009/D,

Further Evironmental permit nos. fep-01/364/2009, fep-02/364/2009, FEP-05/364/2009/A, FEp-06/364/2009/a, FEp-07/364/2009/D, FEP-09/364/2009/B, fep-10/364/2009/B and fep-11/364/2009/B

 

Quarterly Environmental Monitoring
and Audit Report

 

- DECEMBER 2015 to FEBRUARY 2016 -

 

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:

 

 

 

March 2016


Table of contents

 

1. Introduction.. 1

1.1 Scope of the Report 1

1.2 Structure of the Report 1

2. Project Background.. 2

2.1 Background. 2

2.2 Scope of the Project and Site Description.. 2

2.3 Division of the Project Responsibility. 3

2.4 Project Organization and Contact Personnel 5

2.5 Principal Work and Activities. 7

3. Monitoring Requirements. 12

3.1. Noise Monitoring. 12

3.2. Air quality monitoring. 14

4. Monitoring Results. 16

4.1. Noise Monitoring Results. 17

4.2. Real Time Noise Monitoring Results. 21

4.3. Air quality monitoring Results. 24

4.4. Waste Monitoring Results. 28

5. Compliance Audit.. 33

5.1. Noise Monitoring. 33

5.2. Air quality monitoring. 34

5.3. Real Time Noise Monitoring. 35

5.4. Site Audit 37

5.5. Review of the Reasons for and the Implications of Non-compliance. 37

5.6. Summary of action taken in the event of and follow-up on non-compliance. 37

6. Complaints, Notification of Summons and Prosecution.. 38

7. Cumulative Construction Impact due to the Concurrent Projects 44

8. Conclusion.. 45


lIST OF TABLES

 

Table I Principal Work Activities for Contract no. HY/2009/18

Table II Principal Work Activities for Contract no. HK/2009/01

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

Table IV Principal Work Activities for Contract no. HY/2009/15

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

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

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

Table VIII Principal Work Activities for Contract no. HY/2011/08

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 2.4 Principal Work Activities for Contract no. HY/2009/18

Table 2.5 Principal Work Activities for Contract no. HK/2009/01

Table 2.6 Principal Work Activities for Contract no. HK/2009/02

Table 2.7 Principal Work Activities for Contract no. HY/2009/15

Table 2.8 Principal Work Activities for Contract no. HY/2009/19

Table 2.9 Principal Work Activities for Contract no. HK/2012/08

Table 2.10 Principal Work Activities for Contract no. HY/2010/08

Table 2.11 Principal Work Activities for Contract no. HY/2011/08

Table 3.1 Noise Monitoring Stations

Table 3.2 Real Time Noise Monitoring Stations

Table 3.3 Air quality monitoring Stations

Table 4.1 Noise Monitoring Station for Contract no. HY/2009/18

Table 4.2 Noise Monitoring Stations for Contract nos. HK/2009/01 and HK/2009/02

Table 4.3 Noise Monitoring Station for Contract nos. HY/2009/15

Table 4.4 Noise Monitoring Stations for Contract no. HY/2009/19

Table 4.5 Noise Monitoring Stations for Contract no. HY/2010/08

Table 4.6 Noise Monitoring Stations for Contract no. HY/2011/08

Table 4.7 Real Time Noise Monitoring Stations for Contract no. HY/2009/19

Table 4.8 Real Time Noise Monitoring Stations for Contract no. HY/2011/08

Table 4.9 Air quality monitoring Stations for Contract no. HY/2009/18

Table 4.10 Air quality monitoring Stations for Contract no. HK/2009/01

Table 4.11 Air quality monitoring Station for Contract no. HK/2009/02

Table 4.12 Air quality monitoring Station for Contract no. HY/2009/15

Table 4.13 Air quality monitoring Stations for Contract no. HY/2009/19

Table 4.14 Air quality monitoring Stations for Contract no. HK/2012/08

Table 4.15 Air quality monitoring Stations for Contract no. HY/2010/08

Table 4.16 Air quality monitoring Stations for Contract no. HY/2011/08

Table 4.17 Details of Waste Disposal for Contract no. HK/2009/01

Table 4.18 Details of Waste Disposal for Contract no. HK/2009/02

Table 4.19 Details of Waste Disposal for Contract no. HY/2009/18

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 4.24 Details of Waste Disposal for Contract no. HY/2011/08

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 Results and Graphical Presentations

Appendix 4.2 Real-time Noise Monitoring Results and Graphical Presentations

Appendix 4.3 Air Quality Monitoring Results and Graphical Presentations

Appendix 5.1 Event Action Plans

Appendix 6.1 Complaint Log

Appendix 6.2 Notification of Exceedance

Appendix 8.1 Construction Programme of Individual Contracts


 

EXECUTIVE SUMMARY

 

  1. This is the Environmental Monitoring and Audit (EM&A) Quarterly Report December 2015 to February 2016 specific for Environmental Permit no. EP-364/2009/D, Further Environmental Permit nos. FEP-01/364/2009, FEP-02/364/2009, FEP-05/364/2009/A, FEP-06/364/2009/A, FEP-07/364/2009/D, FEP-09/364/2009/B, FEP-10/364/2009/B AND FEP-11/364/2009/B. The EM&A report is prepared by the Environmental Team (ET) employed under Contract No. HK/2011/07 Wan Chai Development Phase II and Central Wanchai Bypass Sampling, Field Measurement and Testing Works (Stage 2). This report presents the environmental monitoring findings and information recorded during the period from 28 November 2015 to 26 February 2016. The cut-off date of reporting is at 26th of each reporting quarter.

 

  1. The implementation of the Environmental Monitoring and Audit Programme for the Wan Chai Development phase II and Central-Wan Chai Bypass Project has been taken over by the Lam Geotechnics Limited (LGL) under Contract HK/2015/01 Wan Chai Development Phase II and Central Wanchai Bypass Sampling, Field Measurement and Testing Works (Stage 3) from 27 December 2015 in continuation of the previous Environmental Team employed under Contact HK/2011/07 Wan Chai Development Phase II and Central Wanchai Bypass Sampling, Field Measurement and Testing Works (Stage 2).

 

  1. In the reporting quarter, the principal work activities of individual contracts are included as follows:

Contract no. HY/2009/18 - Central - Wan Chai Bypass (CWB) - Central Interchange under FEP-05/364/2009/

Major construction activities for Contract no. HY/2009/18 have been commenced on 21 April 2011. During this reporting period, the principal work activities for Contract no. HY/2009/18 are summarized as below:

Table I Principal Work Activities for Contract no. HY/2009/18

December 2015

January 2016

February 2016

Ÿ   Drainage works

Ÿ   Road works

Ÿ   Bridges construction

 

Ÿ   Drainage works

Ÿ   Road works

Ÿ   Bridges construction

 

Ÿ   Drainage works

Ÿ   Road works

Ÿ   Landscaping works

 

 

 

 

 

 

 

 

 

Contract no. HK/2009/01 - Wan Chai Development Phase II - Central - Wan Chai Bypass at Hong Kong Convention and Exhibition Centre - Tunnel Works under FEP-02/364/2009

Major construction activities for Contract no. HK/2009/01 have been commenced on 25 August 2011. During this reporting period, the principal work activities are summarized as below:

Table II Principal Work Activities for Contract no. HK/2009/01

December 2015

January 2016

February 2016

Ÿ   Stage 1 & 2 Backfilling works at CWB Tunnel top slab

Ÿ   Construction of slip road 2 and slip road 3

Ÿ   Stage 3 RC structure for CWB Tunnel Bay 18 to 20

Ÿ   Removal of abandoned cooling main (P7/P9) at Convention Avenue

Ÿ   Reinstatement of outfall was

Ÿ   Reinstatement of triangular planter at Fenwick Pier Street

Ÿ   Roadworks /drains for Expo Drive East

Ÿ   Stage 4 ELS works

Ÿ   Stage 3 Backfilling works at CWB Tunnel top slab

Ÿ   Construction of slip road 3

Ÿ   Stage 4 ELS works and tunnel structure works.

Ÿ   Removal of abandoned cooling main (P7/P9) at Convention Avenue

Ÿ   Reinstatement of outfall

Ÿ   Reinstatement of triangular planter at Fenwick Pier Street

Ÿ   Roadworks /drains for Expo Drive East

 

Ÿ   Stage 3 backfilling works at CWB Tunnel top slab.

Ÿ   Construction of slip road 3.

Ÿ   Stage 4 demolition of the bulkhead wall and construction tunnel structure.

Ÿ   Removal of abandoned cooling main (P7/P9) at Convention Avenue

Ÿ   Reinstatement of outfall

Ÿ   Reinstatement of triangular planter at Fenwick Pier Street

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Contract no. HK/2009/02 - Wan Chai Development Phase II - Central - Wan Chai Bypass at Wan Chai East (CWB Tunnel) under FEP-01/364/2009

Major construction activities for Contract no. HK/2009/02 have been commenced on 26 April 2011. During this reporting period, the principal work activities are summarized as below:

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

December 2015

January 2016

February 2016

Ÿ   Completion of road side barriers

Ÿ   Backfilling works

Ÿ   Cutting the top part of diaphragm wall

Ÿ   Strut layer S6 lateral support installation

Ÿ   Breaking through bulkhead wall BW3

Ÿ   Pouring blinding layer concrete

Ÿ   Tunnel construction at west side

Ÿ   Waterproofing layer application

Ÿ   Ground investigation works for bored piles and diaphragm wall

Ÿ   Bored pile construction

Ÿ   Pre-treatment works and guide wall construction for diaphragm wall

Ÿ   Diaphragm wall construction

Ÿ   Extraction of the temporary sheetpile seawall and removal of the temporary seawall blocks near the interface between Portion 2 and Portion 5

 

 

Ÿ   Removal of stockpile of material, site clearance works at OHVD at Tunnel Portion 1.

Ÿ   Construction of road side barriers

Ÿ   Struts installation for layer S6

Ÿ   Excavation for formation level

Ÿ   Construction of blinding layer

Ÿ   Breaking through bulkhead wall BW3

Ÿ   Ground investigation works

Ÿ   Bored pile construction

Ÿ   Extraction of the temporary sheet pile seawall and removal of the temporary seawall blocks near the interface between Portion 2 and Portion 5

Ÿ   Setting up of silo tanks, pre-treatment works for diaphragm wall construction

Ÿ   Excavation at diaphragm wall panel

 

Ÿ   Installation of steel angles for trough cover

Ÿ   Site clearance works was on going at OHVD at Tunnel Portion 1.

Ÿ   Construction of road side barriers

Ÿ   Casting/grouting the openings of OHVD slab and the king post recesses at top slab soffit

Ÿ   Construction of road side barriers

Ÿ   Excavation for formation level

Ÿ   Construction of blinding layer

Ÿ   Breaking through bulkhead wall BW3

Ÿ   Waterproofing works and base slab construction

Ÿ   Bored pile construction

Ÿ   Diaphragm wall panel construction

Ÿ   Setting up of silo tanks

 

 

 

 

 

 

 

Contract no. HY/2009/15 - Central-Wanchai Bypass Tunnel (Causeway Bay Typhoon Shelter Section) under FEP-06/364/2009/A

Major construction activities for Contract no. HY/2009/15 has been commenced on 13 July 2011. During this reporting period, the principal work activities are summarized as below:

Table IV Principal Work Activities for Contract no. HY/2009/15

December 2015

January 2016

February 2016

Ÿ   Construction roadside barrier at Mined Tunnel

Ÿ   Rock excavation at TPCWAW

Ÿ   Demolition of bulkhead wall between TPCWAE and TPCWAW

Ÿ   Construction RC structure at TPCWAW

Ÿ   Remaining works inside tunnel at TS4 and TPCWAE

Ÿ   Removal of standby Dewatering System and monitoring instrument along Hung Hing road

 

Ÿ   Construction roadside barrier at Mined Tunnel

Ÿ   Rock excavation at TPCWAW

Ÿ   Demolition of bulkhead wall between TPCWAE and TPCWAW

Ÿ   Construction RC structure at TPCWAW

Ÿ   Remaining works inside tunnel at TS4 and TPCWAE

Ÿ   Removal of standby Dewatering System and monitoring instrument along Hung Hing road

 

Ÿ   Construction RC structure at TPCWAW

Ÿ   Dismantle steel work at TPCWAW

Ÿ   Remaining works inside tunnel at TS4 and TPCWAE

Ÿ   Remedial works at Mined Tunnel

 

 

Contract no. HY/2009/19 - Central - Wanchai Bypass Tunnel (North Point Section) and Island Eastern Corridor Link under FEP-07/364/2009/D

Major construction activities for Contract no. HY/2009/19 have been commenced on March 2011. During this reporting period, the principal work activities are summarized as below:

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

December 2015

January 2016

February 2016

Ÿ   Pier construction for IEC

Ÿ   Construction of EVB

Ÿ   Column modification at F1 to F8

Ÿ   Bridge E deck construction

Ÿ   Watson Road laying of new water pipe

Ÿ   Oil Street drainage works

Ÿ   Excavation / Construction of retaining wall/Approach Ramp /ADB

Ÿ   Bridge segment erections

Ÿ   Pre-bored H-pile for Approach Ramp

Ÿ   Hing Fat Street modification works

Ÿ   Bridge TA2 demolition

Ÿ   Abutment D12 construction

Ÿ   Pier construction for IEC

Ÿ   Construction of EVB

Ÿ   Column modification at F1 to F8

Ÿ   Watson Road laying of new water pipe

Ÿ   Oil Street drainage works

Ÿ   Excavation / Construction of retaining wall/ADB

Ÿ   Bridge segment erections

Ÿ   Pre-bored H-pile for Approach Ramp

Ÿ   Hing Fat Street modification works

Ÿ   Bridge TA2 demolition

Ÿ   Abutment D12 construction

Ÿ   EVA Temporary works

 

Ÿ   Pier construction for IEC

Ÿ   Construction of EVB

Ÿ   Column modification at F1 to F8

Ÿ   Watson Road laying of new water pipe

Ÿ   Oil Street drainage works

Ÿ   Excavation / Construction of retaining wall/ADB

Ÿ   Bridge segment erections

Ÿ   Pre-bored H-pile for Approach Ramp

Ÿ   Hing Fat Street modification works

Ÿ   EVA Temporary works

 

 

Contract no. HK/2012/08 Wan Chai Development Phase II Central- Wan Chai Bypass at Wan Chai West under FEP-09/364/2009B

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

December 2015

January 2016

February 2016

Ÿ   Diaphragm wall construction

Ÿ   Grouting

Ÿ   Construction of MVB

Ÿ   Pre-bored H-pile construction

Ÿ   Construction of concrete plug

Ÿ   Excavation and lateral support installation

Ÿ   Grouting

Ÿ   Construction of MVB

Ÿ   Pre-bored H-pile construction

Ÿ   Construction of concrete plug

Ÿ   Excavation and lateral support installation

 

Ÿ   Grouting

Ÿ   Construction of MVB

Ÿ   Pre-bored H-pile construction

Ÿ   Construction of concrete plug

Ÿ   Excavation and lateral support installation for CWB tunnel

 

 

 

Contract no. HY/2010/08 Central and WanChai Bypass Slip road 8 section under FEP-10/364/2009B

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

December 2015

January 2016

February 2016

Ÿ   Tree protection works next to existing BGO,

Ÿ   Drainage improvement works,

Ÿ   Sheet piling works,

Ÿ   Excavation and Lateral Support for U-structure,

Ÿ   Pipe piling & grouting works,

Ÿ   Utility diversion works,

Ÿ   Retaining wall works

Ÿ   ELS works,

Ÿ   Diaphragm Wall, Barrette construction and king post installation works

Ÿ   D-wall drill cutting works

Ÿ   Construction works for subway extension

Ÿ   Tree protection works next to existing BGO,

Ÿ   Drainage improvement works,

Ÿ   Sheet piling works,

Ÿ   Excavation and Lateral Support for U-structure,

Ÿ   Pipe piling & grouting works,

Ÿ   Utility diversion works,

Ÿ   Retaining wall works

Ÿ   ELS works,

Ÿ   Diaphragm Wall, Barrette construction and king post installation works

Ÿ   D-wall drill cutting works

Ÿ   Construction works for subway extension

 

Ÿ   Tree protection works next to existing BGO,

Ÿ   Drainage improvement works,

Ÿ   Excavation and Lateral Support for U-structure,

Ÿ   Pipe piling & grouting works,

Ÿ   Utility diversion works,

Ÿ   Retaining wall works

Ÿ   ELS works,

Ÿ   D-wall drill cutting works

Ÿ   Construction works for subway extension

 

Contract no. HY/2011/08 Central - Wan Chai Bypass (CWB) Tunnel Buildings, Systems and Fittings, and Works Associated with Tunnel Commissioning under FEP-11/364/2009B

 

Table VIII Principal Work Activities for Contract no. HY/2011/08

December 2015

January 2016

February 2016

Ÿ   West Ventilation Building Construction

Ÿ   East Ventilation Shaft Construction

Ÿ   Tunnel Thermal Barrier Construction

 

Ÿ   Construction of Ventilation Buildings, inclusive of East Ventilation Shaft, West Ventilation Building

Ÿ   Construction of Tunnel Thermal Barrier

 

Ÿ   Construction of Ventilation Buildings, inclusive of East Ventilation Shaft, West Ventilation Building

Ÿ   Construction of Tunnel Thermal Barrier

Ÿ   Installation of Electricals and Mechanicals

 

Noise Monitoring

  1. Noise monitoring was conducted at M1a - Harbour Road Sports Center; M2b - Noon-day gun area; M3a - Tung Lo Wan Fire Station; M4b - Victoria Center; M5b - City Garden, M6 - HK Baptist Church Henrietta Secondary School, M7e and M7w International Finance Centre eastern and western wing, and M8 City Hall on a weekly basis.
  2. Four limit level exceedances were recorded at noise monitoring station M1a Habour Road Sports Center on 01, 08, 15 and 23 December 2015. The exceedances were concluded as non-project related.
  3. Two limit level exceedances were recorded at noise monitoring station M6 HK Baptist Church Henrietta Secondary School on 11 and 16 December 2015. The exceedances were concluded as non-project related.
  4. Two limit level exceedances were recorded at noise monitoring station M1a Habour Road Sports Center on 12 and 19 January 2016. The exceedances were concluded as non-project related.
  5. Two limit level exceedances were recorded at noise monitoring station M1a Habour Road Sports Center on 16 and 23 February 2016. The exceedances were concluded as non-project related.

 

Real time Noise Monitoring

  1. 24-hour real time noise monitoring was conducted at RTN1 - FEHD Hong Kong Transport Section Whitefield Depot for the pilling works in FEHD Whitfield Depot and RTN2 Tunnel (North Point Section) and Island Eastern Corridor Link during the period from 28 September 2012 til 10am on 5 October 2012 in the reporting period.
  2. Real time noise monitoring station at Oil Street Community Liaison Centre (RTN2- Oil Street Community Centre) was relocated from Oil Street Community Liaison Centre to Hong Kong Electric (RTN2a- Electric Centre) on 5 Oct which is a representative of the noise sensitive receiver City Garden. The baseline noise level of RTN2a will adopt the results derived from the baseline noise monitoring conducted in Electric Centre from 4 December 2009 to 17 December 2009.
  3. As confirmed by CWB RSS, the IECL parapet removal operations will commence in March 2013. Liaison was conducted with HK Baptist Church Henrietta Secondary School and Po Leung Kuk Yu Lee Mo Fan Memorial School regarding the set up of RTN3 real time noise monitoring station. Po Leung Kuk Yu Lee Mo Fan Memorial School grant permission for set up on 4 Sep 2012 and station set up was performed on 14 Sep 2012.
  4. Real Time Noise Monitoring at RTN3- Po Leung Kuk Yu Lee Mo Fan Memorial School was commenced since 06 Oct 2012.
  5. Causeway Bay Community Centre has granted permission for set up of real time noise monitoring station on 21 Dec 2012 and station set up was performed on 27 Dec 2012. The Baseline noise level of RTN4- Causeway Bay Community Centre will adopt the results from the baseline noise monitoring report for EP/364/2009 in 22 April 2010 in which approved by EPD.
  6. According to clause 3.1 stated in EP-364/2009B, the real-time monitoring system shall be in place no later than two weeks before the commencement date of demolition works of the existing Island Eastern Corridor. IEC demolition associated construction works was commenced on 3 Feb 2013 and Real time noise monitoring at RTN4-Causeway Bay Community Centre was commenced on 13 Jan 2013.
  7. Real-time noise monitoring station RTN1-FEHD Whitfield Depot was finely adjusted from 2/F to roof-top at FEHD Whitfield Depot on 24 June 2013 with respect to the commencement of advance works for IEC parapet demolition.
  8. No limit level exceedance was recorded in December, January and February reporting month at RTN1- FEHD Hong Kong Transport Section Whitfield Depot during this reporting quarter.
  9. No project related exceedance was recorded in December and February reporting month and no limit level exceedance was recorded in January reporting month at RTN2a-Hong Kong Electric Centre during this reporting quarter.
  10. No limit level exceedance was recorded in December, January and February reporting month at RTN3-Yu Lee Mo Fan Memorial School during this reporting quarter.
  11. No project related exceedance was recorded in December and no limit level exceedance was recorded in January and February reporting month at RTN4- Causeway Bay Community Centre in the reporting quarter.

 

Air Quality Monitoring

  1. Due to extension of site boundary by contractor of HY/2009/19, location of air quality monitoring station CMA1b Oil Street Community Liaison Centre has been finely adjusted on 21 April 2012.
  2. 1-hour and 24-hour Total Suspended Particulates (TSP) monitoring were conducted at CMA1b - Oil Street Community Liaison Centre; CMA2a - Causeway Bay Community Center; CMA3a - CWB PRE Site Office Area; CMA4a Society for the Prevention of Cruelty to Animals; CMA5a - Children Garden opposite to Pedestrian Plaza; MA1e and MA1w International Finance Centre eastern and western wing on every six days basis.
  3. No action or limit exceedance was recorded in the December, January and February reporting month in this reporting quarter.

 

Complaints, Notifications of Summons and Successful Prosecutions

  1. Six environmental complaints were received in the reporting quarter.

 

  1. First public complaint regarding construction dust impact referred by EPD was received by ET on 04 December 2015 (EPD Ref: H04/RS/00028924-15). The complainant reported that excessive construction dust was generated from the construction site near Two International Finance Centre at Finance Street, Central

 

ET confirmed with the Resident Site Staff that bridge works and drains/ sewers construction at the concerned location was undertaken by Contract HY/2009/18 on 12 November 2015. A stockpile which would be reused for backfilling was stored at the concerned location by Contract HY/2009/18 on 12 November 2015.

 

Mitigation measures implemented by the Contractor for the above construction works including covering of idled portion of stockpile and dampening of the exposed stockpile was implemented for the stockpile at the concerned location.

 

According to relevant site records confirmed by RSS, bridge works and drains/ sewers construction at the concerned location was undertaken by Contractor of HY/2009/18 on 12 November 2015 and a stockpile which would be reused for backfilling was stored at the concerned location. Mitigation measures including covering of idled portion of stockpile and dampening of the exposed stockpile was implemented for the stockpile at the concerned location.

 

In view of the public concern on potential dust impact at the concerned location, the Contractor of HY/2009/18 rearranged the works sequence and placed concrete blocks at the bridge retaining wall to allow for early commencement of backfilling on 19 November 2015 to minimize the size of the stockpile at an earlier stage. Additional water sprinklers were installed on 27 November 2015 to further enhance the dampening of the stockpile surface during excavation.

 

Follow-up inspection was conducted during weekly environmental inspection on 10 December 2015 and mitigation measures including covering of stockpile stored at the concerned location was implemented while it was observed that stockpiles stored near Man Chiu Street was not properly covered. The Contractor of HY/2009/18 was advised to promptly provide covering to all idled stockpile stored on site and the Contractor was reminded to enhance the watering during excavated material handling near the concerned location. Further follow up inspection was conducted on 17 December 2015 and mitigation measures including covering and watering for idle stockpile and material handling were implemented.

 

  1. Second public complaint regarding noise impact referred by RSS was received by ET on 16 December 2015 (ICC Case Ref.: 2-1656689815 dated 14 December 2015). The complainant reported that incessant noise emanating from the construction site of the Island Eastern Corridor Link that forms part of the Central-Wanchai Bypass Project.

 

Over the past couple of weeks, there have been loud mechanical pounding at the construction site over the reclaimed area between Blocks 10 and 11 of City Garden. As can be seen, machines have been breaking open the concrete paved on top of the reclaimed area. Work often starts well before 9am on weekdays and, barring a brief period of lull during lunch hours, would often continue unabated until after 5pm. Although I note that certain noise reduction measures have been put into place (e.g. the erection of flimsy noise barriers around the work area), the noise created is still enormous, and this has become a significant nuisance for residents living in nearby blocks of our estate, especially children and the elderly who have to stay at home for longer hours.

 

ET confirmed with the Resident Site Staff that concreting breaking works was carried out with one breaker on 7, 9, 11, 12 and 14 December 2015 and the breaking works at the concerned location were completed on 14 December 2015 morning. Noise mitigation measures including temporary noise barriers near the point of breaking and covering the breaker with acoustic mat were provided during the concerned concrete breaking works.

 

According to information confirmed by RSS, concreting breaking works was carried out by one excavator mounted breaker on 7, 9, 11, 12 and 14 December 2015 and the concerned breaking works outside City Garden Block 10 and Block 11 was completed on 14 December 2015 morning. Noise mitigation measures including temporary noise barriers near the point of breaking and covering the breaker with acoustic mat were provided during the concerned concrete breaking works. Based on the further review on the record of the environmental inspection conducted on 09 December 2015, the Contractor of HY/2009/19 was reminded to temporary noise barrier provided for the pile cap demolition shall follow the Environmental Permit EP-364/2009/D requirement.

 

Follow up inspection was conducted during weekly environmental inspection on 17 December 2015, the concerned breaking works opposite to City Garden Block 10 and Block 11 was observed completed while the Contractor was reminded that the remaining section of temporary noise barrier in accordance with the latest Environmental Permit EP-364/2009/D shall be completed on site as soon as possible. According to the information provided by RSS, the temporary noise barrier in accordance with the Environmental Permit requirement opposite to City Garden was substantially completed on 21 December 2015. In view of the public concern, the Contractor was suggested to consider to review the works duration at daytime and conduct other future breaking works around the concerned location intermittently to minimize the potential noise nuisance caused to the surroundings.

 

Referring to the complaint case regarding the illegal disposal of construction waste referred by EPD was received by ET on 17 November 2015, the updated 2nd and 3rd interim investigation report were submitted to the EPD on 17 December 2015 and 31 December 2015 respectively. In response to the complaint concern, additional water quality monitoring and additional site inspections have been conducted by the ET and the investigation findings were included in the interim investigation reports separately submitted to the EPD. In addition, the ET and IEC have conducted checking on the waste disposal records and site construction records with the CWB RSS team to confirm the key construction activities during the concerned period and the quantities of inert C&D material disposed. Upon further review on relevant records and follow up inspections on the implementation of site measures, the final investigation would be issued.

 

  1. Third public complaint regarding construction noise referred by EPD was received by ET on 14 January 2016 (EPD Ref.: H05/RS/00000570-16 dated 14 January 2016). The complainant reported that there was operation of powered mechanical equipment at the construction site near Lung King Street after 1900hrs. (Contract HK/2012/08)

 

ET confirmed with the Resident Site Staff that from 1900hrs to 2115hrs on 06 January 2016, shifting of equipment and socket H-pile casing was undertaken by the Contractor of HK/2012/08 at the concerned location. Total one crawler crane was in operation.

 

According to the relevant site records provided by RSS, shifting of equipment and socket H-pile casing was undertaken by the Contractor of HK/2012/08 at the concerned location from 1900hrs to 2115hrs on 06 January 2016. Total one crawler crane was in operation and the relevant Construction Noise Permit GW-RS0976-15 for the concerned operation was confirmed in place. Based on the above, the construction activities conducted under Contract HK/2012/08 on 06 January 2016 after 1900hrs was in compliance with the statutory requirement. Nevertheless, the Contractor was reminded to upkeep the site control system for construction works carried out during restricted hours and night time for Construction Noise Permit compliance in view of the nearby public concern.

 

  1. Fourth public complaint regarding the subject matter on blocked drainage were referred by RSS was received by ET on 19 January 2016 (ICC Ref.: #2-1754682833 and ICC Ref: #2-1759629742). The first ICC complainant (ICC Ref.: #2-1754682833) on 11 January 2016 reported that the drainage at Hung Hing Road, Causeway Bay near the entrance of Cross Harbour Tunnel was blocked and sewage was overflowing from the sewer. The first complainant on 13 January 2016 enquired the status of follow-up, the complainant reported that the sewage overflow was severe and pose environmental hygiene concern to the surroundings. The first complainant on 14 January 2016 reported that the situation was not improved and would escalate the case if not addressed.

 

The second ICC complainant on 12 January 2016 (ICC Ref: #2-1759629742) reported that a foul sewer was found choking and foul water flows onto the carriageways.

 

ET confirmed with the Resident Site Staff that no discharge point from the Contractor of HY/2009/15 is located within the concern portion of public drain (roadside gully) along Hung Hing Road. The observed yellow pipe extending from the roadside gully at Hung Hing Road into the site area under Contract HY/2009/15 was installed by the Contractor of HY/2009/15 to pump excessive sewage from the roadside gully on 11 January 2016.

 

According to relevant site records and information provided by RSS, a steady flow of wastewater, noticeably sewer-like odour, was seeping through an existing sewage manhole at Hung Hing Road on 11 January 2016 and resulting in the formation of local ponding formed around the low point gully nearby. Based on relevant site information, no discharge point from the Contractor of HY/2009/15 was located at the concerned public drain (roadside gully) along Hung Hing Road while the observed yellow pipe extending from the roadside gully at Hung Hing Road into Contract HY/2009/15 site area was installed by the Contractor of HY/2009/15 to pump excessive sewage from the roadside gully on 11 January 2016. In view of no discharge point established under Contractor HY/2009/15 was observed at the concerned portion of Hung Hing Road, no direct information indicating the association with the Contractor of HY/2009/15 is considered available.

 

Follow up inspection was conducted during the weekly environmental inspection on 26 January 2016, no further accumulation of wastewater and no particular blockage of the concerned roadside gully at Hung Hing Road was observed. In addition, no overflow from the roadside sewer was observed. Nevertheless, the Contractor of HY/2009/15 was reminded to upkeep the site exit condition to avoid any potential impact to the surroundings.

 

  1. Fifth public complaint regarding the blockage of public drainage referred by EPD was received by ET on 22 January 2016 (EPD Case Ref.: H05/RS/00001524-16). The complainant reported that construction wastewater from the China States construction site under Contract HY/2009/15 was discharged from the site exit at Hung Hing Road near the Royal Hong Kong Yacht Club to the carriage of Hung Hing Road causing accumulation of stagnant water starting from 11 January 2016.

ET confirmed with the Resident Site Staff that no construction activities with potential runoff at the main entrance of PRE Office was conducted under Contractor of HY/2009/15 on 11, 14, 15 and 17 January 2016.Concreting for Seawall Reinstatement at TPCWAE was conducted under Contractor of HY/2009/15 on 12 January 2016 and 18 January 2016.

Concreting for construction works at covered Tunnel by using concrete pump at TPCWAE was conducted under Contractor of HY/2009/15 on 13 January 2016 and 16 January 2016.

 

According to relevant site records and information provided by RSS, a steady flow of wastewater, noticeably sewer-like odour, was seeping through an existing sewage manhole at Hung Hing Road on 11 January 2016 and resulting in the formation of local ponding formed around the low point gully nearby.

 

Based on relevant site information provided by RSS, no construction activity with potential runoff at the main entrance of PRE Office were conducted under Contractor of HY/2009/15 on 11, 14, 15 and 17 January 2016 while concreting for seawall reinstatement at TPCWAE were conducted on 12 January 2016 and 18 January 2016 and concreting for construction works at covered Tunnel by using concrete pump at TPCWAE were conducted on 13 January 2016 and 16 January 2016. All construction runoff was pumped to the wastewater treatment facility. In addition, no discharge point from the Contractor of HY/2009/15 was located at the concerned public drain (roadside gully) along Hung Hing Road.

 

Follow up inspection was conducted during the weekly environmental inspection on 26 January 2016. No further accumulation of wastewater and particular blockage of the concerned roadside gully at Hung Hing Road was observed and no overflow from the roadside sewer was observed. The condition of the construction site exit under HY/2009/15 was generally in order and no particular construction surface runoff was observed. Nevertheless, the Contractor of HY/2009/15 was reminded to upkeep the site exit condition to avoid any potential impact to the surroundings.

 

The final investigation report of the previous public complaint regarding illegal disposal of construction waste referred by EPD on 17 November 2015 was submitted to EPD on 05 February 2016 to conclude the construction waste disposal information and additional measures and inspection implemented by the Environmental Team and the CWB RSS team in response to the public concern and the respective findings.

 

  1. Sixth public complaint regarding construction works at restricted hours referred by EPD was received by ET on 16 February 2016 (EPD Ref.: H05/RS/00003169-16 dated 16 February 2016). The complainant reported that there was construction work at construction site of CEDD Wan Chai Development Phase II reclamation project around 2200hrs on 06 February 2016 at the west of HKCEC within the work area of Contract HK/2012/08.

 

ET confirmed with the Resident Site Staff that from 1900hrs to 2300hrs on 06 February 2016, no site activity was undertaken by the Contractor of HK/2012/08 at the concerned location

and site activities under the Contractor of HK/2012/08 at the concerned area were stopped around 1700hrs on 06 February 2016.

 

According to the relevant site records provided by RSS, from 1900hrs to 2300hrs on 06 February 2016, no site activity was undertaken by the Contractor of HK/2012/08 at the concerned location and site activities under the Contractor of HK/2012/08 at the concerned area were stopped around 1700hrs on 06 February 2016. Nevertheless, the Contractor was reminded to upkeep the site control system for any construction works carried out during restricted hours and night time for Construction Noise Permit compliance.

 

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-364/2009/D and Further Environmental permit nos. FEP-01/364/2009, FEP-02/364/2009, FEP-05/364/2009/A, FEP-06/364/2009/A, FEP-07/364/2009/D, FEP-09/364/2009/B, FEP-10/364/2009/B and FEP-11/364/2009/B 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 10.3 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 28 November 2015 to 26 February 2016.

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.     Design and Construction of Central Wan Chai Bypass and Island Eastern Corridor Link under the Project involves the construction and operation of a trunk road and its road tunnel more than 800m in length between portals that is shown at Figure 2.1.

2.2.2.     The study area encompasses existing developments from Central to North Point. The scope of the Central-Wanchai Bypass (CWB) and Island Eastern Corridor Link (IECL) includes:

          A dual three-lane trunk road, approximately 4.5 km in length, and tunnel approximately 3.7 km in length defined from the connection with the existing Rumsey Street Flyover in Central, through to a connection with the existing Island Eastern Corridor to the east of the Causeway Bay Typhoon Shelter (CBTS);

          The Central Interchange near the Rumsey Street Flyover to provide road connections to the Central area;

          Tunnel control buildings and ventilation buildings;

          Slip roads to connect the CWB to the local road system in the Wan Chai North and Causeway Bay area;

          Associated road lighting, road signing, traffic control and surveillance system; and

          Other associated works.

 

2.2.3.     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 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.     In the reporting period, all the contracts were commenced and contract no. 04/HY/2006 had been completed. 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

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

21 April 2011

04/HY/2006

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

DP1

September 2010

(Completed)

HK/2009/01

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

DP1, DP2

25 August 2011

HK/2009/02

Wan Chai Development Phase II Central Wan Chai Bypass at Wan Chai East(CWB Tunnel)

DP1

26 April 2011

HY/2009/15

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

DP1

13 July 2011

HY/2009/19

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

DP1

24 March 2011

HK/2010/06

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

DP3

22 March 2011

(Completed)

HK/2012/08

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

DP1,DP2, DP3

10 March 2014

HY/2010/08

Central- Wanchai Bypass Tunnel Tunnel (Slip Road 8)

DP1, DP2, DP3

21 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

 

2.3.3.     The construction works of Contract no. 04/HY/2006 Reconstruction of Bus Terminus near Man Yiu Street and Man Kwong Street under FEP-04/364/2009/A was completed, and the FEP was surrendered by the Contractor on 11 February 2011.

2.3.4.     Construction of bored pile E3B under HY/2009/17 was confirmed completed and the respective work area under FEP-03/364/2009 was handover and inspected under HY/2009/19 from 19 Dec 2012 onwards. Subsequently, the FEP-03/364/2009 was surrendered by the Contractor on 28 March 2013.

2.3.5.     Construction works under HK/2010/06 was confirmed completed and the respective work area under FEP-08/364/2009/A was handover and inspected under HK/2012/08 from 22 Sep 2014 onwards. Subsequently, the FEP-08/364/2009/A was surrendered by the Contractor on 3 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

Principal Resident Engineer

Mr. Frankie Fan

2587 1778

2587 1877

Engineers Representative for CWB

Principal Resident Engineer

Mr. Peter Poon

3916 1818

3529 2829

Chun Wo Leader Joint Venture

Contractor under Contract no. HK/2009/01

Project Manager

Mr. Simon Liu

2162 9909

2634 1626

Site Agent

Mr. Andy Yu

9648 4896

Construction Manager

Mr. Terry Wong

9757 9846

Construction Manager

Mr. Wyman Wong

9627 2467

Construction Manager

Mr. Kenneth Chan

9160 3850

Environmental Officer

Ms. Wendy Ng

9103 2370

Assistant Environmental Engineer

Ms. Connie Chan

9047 6148

Chun Wo CRGL Joint Venture

Contractor under Contract no. HK/2009/02

Site Agent

Mr. K.K. Yuen

3658-3002

2827 9996

Project Manager

Mr. Paul Yu

3658 3085

Environmental Officer

Mr. C.P. Ho

9191 8856

Chun Wo - CRGL - MBEC Joint Venture

Contractor under Contract no. HY/2009/19

Project Manager

Mr. David Lau

3758 8879

2570 8013

Deputy Project Manager

Mr. William Luk

9456 9819

Deputy Site Agent

Eric Fong

6191 9337

Environmental Manager /

Environmental Officer

Mr. M.H. Isa

9884 0810

Environmental Engineer

Mr. Calvin Leung

9286 9208

Leighton Contractors (Asia) Limited

Contractor under Contract no. HY/2009/18

Site Agent

Mr. Jimmy Chu

2214 7700

2140 6799

Deputy Site Agent

Mr. Bob Yeung

2214 7703

Environmental Officer

Mr. Chris Chan

2823 1161

Assistant Environmental Engineer

Mr. Christy So

3937 1065

China State Construction Engineering (HK) Ltd.

Contractor under Contract no. HY/2009/15

Project Director

Mr. Chris Leung

3557 6393

2566 2192

Site Manager

Mr. Y. Huo

3557 6368

Contractors Representative

Mr. Rex Chan

3557 6371

Environmental Officer

Mr. Andy Mak

3557 6215

Environmental Supervisor

Mr. Harry Wong

3557 6348

China State- Leader JV

Contractor under Contract no. HK/2012/08

Project Director

Mr. C.N. Lai

9137 1811

2877 1522

Project Manager

Mr. Eddie Chung

9193 8871

Site Agent

Mr. Keith Tse

9095 7922

Environmental Officer

Mr. James MA

9130 9549

Environmental Supervisor

Mr. Y.L. Ho

6050 4919

China State

Contractor under Contract no.HY/2010/08

Project Director

Cheung Kit Cheung

3557 6399

3465 2899

Project Manager

Chan Ying Lun

9812 0592

Deputy Project Manager

Chris Leung

3467 4299

Site Agent

Mr. Andrew Wong

3467 4277

Environmental Officer

Mr. Gabriel Wong

3557 6464

Environmental Supervisor

Mr. Louis Lam Tsz Kwan

3557 6470

Leighton Joint Venture

Contractor under Contract no. HY/2011/08

Project Manager

Paul Evans

2823 1111

21406799

Site Agent

Colman Wong

9730 0806

Environmental Officer

Malcom Leung

3973 0850

Environmental Supervisor

Christy So

3973 1065

Lam Geotechnics Limited

Environmental Team (ET)

Environmental Team Leader (ETL)

Mr. Raymond Dai

2882 3939

2882 3331

RAMBOLL ENVIRON Hong Kong Limited

Independent Environmental Checker (IEC)

Independent Environmental Checker (IEC)

Mr. David Yeung

3465 2888

3465 2899

 

2.5          Principal Work and Activities

2.5.1.     Major construction activities for Contract no. HY/2009/18 have been commenced on 21 April 2011. During this reporting period, the principal work activities for Contract no. HY/2009/18 are summarized in Table2.4:

Table 2.4 Principal Work Activities for Contract no. HY/2009/18

December 2015

January 2016

February 2016

Ÿ   Drainage works

Ÿ   Road works

Ÿ   Bridges construction

 

Ÿ   Drainage works

Ÿ   Road works

Ÿ   Bridges construction

 

Ÿ   Drainage works

Ÿ   Road works

Ÿ   Landscaping works

 

2.5.2.     Major construction activities for Contract no. HK/2009/01 have been commenced on 25 August 2011. During this reporting period, the principal work activities are summarized in Table2.5:

Table 2.5 Principal Work Activities for Contract no. HK/2009/01

December 2015

January 2016

February 2016

Ÿ   Stage 1 & 2 Backfilling works at CWB Tunnel top slab

Ÿ   Construction of slip road 2 and slip road 3

Ÿ   Stage 3 RC structure for CWB Tunnel Bay 18 to 20

Ÿ   Removal of abandoned cooling main (P7/P9) at Convention Avenue

Ÿ   Reinstatement of outfall was

Ÿ   Reinstatement of triangular planter at Fenwick Pier Street

Ÿ   Roadworks /drains for Expo Drive East

Ÿ   Stage 4 ELS works

Ÿ   Stage 3 Backfilling works at CWB Tunnel top slab

Ÿ   Construction of slip road 3

Ÿ   Stage 4 ELS works and tunnel structure works.

Ÿ   Removal of abandoned cooling main (P7/P9) at Convention Avenue

Ÿ   Reinstatement of outfall

Ÿ   Reinstatement of triangular planter at Fenwick Pier Street

Ÿ   Roadworks /drains for Expo Drive East

 

Ÿ   Stage 3 backfilling works at CWB Tunnel top slab.

Ÿ   Construction of slip road 3.

Ÿ   Stage 4 demolition of the bulkhead wall and construction tunnel structure.

Ÿ   Removal of abandoned cooling main (P7/P9) at Convention Avenue

Ÿ   Reinstatement of outfall

Ÿ   Reinstatement of triangular planter at Fenwick Pier Street

 

 

2.5.3.     Major construction activities for Contract no. HK/2009/02 have been commenced on 26 April 2011. During this reporting period, the principal work activities are summarized in Table2.6:

Table 2.6 Principal Work Activities for Contract no. HK/2009/02

December 2015

January 2016

February 2016

Ÿ   Completion of road side barriers

Ÿ   Backfilling works

Ÿ   Cutting the top part of diaphragm wall

Ÿ   Strut layer S6 lateral support installation

Ÿ   Breaking through bulkhead wall BW3

Ÿ   Pouring blinding layer concrete

Ÿ   Tunnel construction at west side

Ÿ   Waterproofing layer application

Ÿ   Ground investigation works for bored piles and diaphragm wall

Ÿ   Bored pile construction

Ÿ   Pre-treatment works and guide wall construction for diaphragm wall

Ÿ   Diaphragm wall construction

Ÿ   Extraction of the temporary sheetpile seawall and removal of the temporary seawall blocks near the interface between Portion 2 and Portion 5

 

 

Ÿ   Removal of stockpile of material, site clearance works at OHVD at Tunnel Portion 1.

Ÿ   Construction of road side barriers

Ÿ   Struts installation for layer S6

Ÿ   Excavation for formation level

Ÿ   Construction of blinding layer

Ÿ   Breaking through bulkhead wall BW3

Ÿ   Ground investigation works

Ÿ   Bored pile construction

Ÿ   Extraction of the temporary sheet pile seawall and removal of the temporary seawall blocks near the interface between Portion 2 and Portion 5

Ÿ   Setting up of silo tanks, pre-treatment works for diaphragm wall construction

Ÿ   Excavation at diaphragm wall panel

 

Ÿ   Installation of steel angles for trough cover

Ÿ   Site clearance works was on going at OHVD at Tunnel Portion 1.

Ÿ   Construction of road side barriers

Ÿ   Casting/grouting the openings of OHVD slab and the king post recesses at top slab soffit

Ÿ   Construction of road side barriers

Ÿ   Excavation for formation level

Ÿ   Construction of blinding layer

Ÿ   Breaking through bulkhead wall BW3

Ÿ   Waterproofing works and base slab construction

Ÿ   Bored pile construction

Ÿ   Diaphragm wall panel construction

Ÿ   Setting up of silo tanks

 

 

 

 

 

 

2.5.4.     Major construction activities for Contract no. HY/2009/15 have been commenced on 13 July 2011. During this reporting period, the principal work activities are summarized in Table 2.7:

Table 2.7 Principal Work Activities for Contract no. HY/2009/15

December 2015

January 2016

February 2016

Ÿ   Construction roadside barrier at Mined Tunnel

Ÿ   Rock excavation at TPCWAW

Ÿ   Demolition of bulkhead wall between TPCWAE and TPCWAW

Ÿ   Construction RC structure at TPCWAW

Ÿ   Remaining works inside tunnel at TS4 and TPCWAE

Ÿ   Removal of standby Dewatering System and monitoring instrument along Hung Hing road

 

Ÿ   Construction roadside barrier at Mined Tunnel

Ÿ   Rock excavation at TPCWAW

Ÿ   Demolition of bulkhead wall between TPCWAE and TPCWAW

Ÿ   Construction RC structure at TPCWAW

Ÿ   Remaining works inside tunnel at TS4 and TPCWAE

Ÿ   Removal of standby Dewatering System and monitoring instrument along Hung Hing road

 

Ÿ   Construction RC structure at TPCWAW

Ÿ   Dismantle steel work at TPCWAW

Ÿ   Remaining works inside tunnel at TS4 and TPCWAE

Ÿ   Remedial works at Mined Tunnel

 

2.5.5.     Major construction activities for Contract no. HY/2009/19 have been commenced on March 2011. During this reporting period, the principal work activities are summarized in Table 2.8:

Table 2.8 Principal Work Activities for Contract no. HY/2009/19

December 2015

January 2016

February 2016

Ÿ   Pier construction for IEC

Ÿ   Construction of EVB

Ÿ   Column modification at F1 to F8

Ÿ   Bridge E deck construction

Ÿ   Watson Road laying of new water pipe

Ÿ   Oil Street drainage works

Ÿ   Excavation / Construction of retaining wall/Approach Ramp /ADB

Ÿ   Bridge segment erections

Ÿ   Pre-bored H-pile for Approach Ramp

Ÿ   Hing Fat Street modification works

Ÿ   Bridge TA2 demolition

Ÿ   Abutment D12 construction

Ÿ   Pier construction for IEC

Ÿ   Construction of EVB

Ÿ   Column modification at F1 to F8

Ÿ   Watson Road laying of new water pipe

Ÿ   Oil Street drainage works

Ÿ   Excavation / Construction of retaining wall/ADB

Ÿ   Bridge segment erections

Ÿ   Pre-bored H-pile for Approach Ramp

Ÿ   Hing Fat Street modification works

Ÿ   Bridge TA2 demolition

Ÿ   Abutment D12 construction

Ÿ   EVA Temporary works

 

Ÿ   Pier construction for IEC

Ÿ   Construction of EVB

Ÿ   Column modification at F1 to F8

Ÿ   Watson Road laying of new water pipe

Ÿ   Oil Street drainage works

Ÿ   Excavation / Construction of retaining wall/ADB

Ÿ   Bridge segment erections

Ÿ   Pre-bored H-pile for Approach Ramp

Ÿ   Hing Fat Street modification works

Ÿ   EVA Temporary works

 

 

2.5.6.     Major construction activities for Contract no. HK/2012/08 have been commenced on March 2013. During the reporting period, the principal work activities are summarized in Table 2.9

Table 2.9 Principal Work Activities for Contract no. HK/2012/08

December 2015

January 2016

February 2016

Ÿ   Diaphragm wall construction

Ÿ   Grouting

Ÿ   Construction of MVB

Ÿ   Pre-bored H-pile construction

Ÿ   Construction of concrete plug

Ÿ   Excavation and lateral support installation

Ÿ   Grouting

Ÿ   Construction of MVB

Ÿ   Pre-bored H-pile construction

Ÿ   Construction of concrete plug

Ÿ   Excavation and lateral support installation

 

 

 

Ÿ   Grouting

Ÿ   Construction of MVB

Ÿ   Pre-bored H-pile construction

Ÿ   Construction of concrete plug

Ÿ   Excavation and lateral support installation for CWB tunnel

 

 

2.5.7.     Major construction activities for Contract no.HY/2010/08 have been commenced on March 2013. During the reporting period, the principal work activities are summarized in Table 2.10

Table 2.10 Principal Work Activities for Contract no. HY/2010/08

December 2015

January 2016

February 2016

Ÿ   Tree protection works next to existing BGO,

Ÿ   Drainage improvement works,

Ÿ   Sheet piling works,

Ÿ   Excavation and Lateral Support for U-structure,

Ÿ   Pipe piling & grouting works,

Ÿ   Utility diversion works,

Ÿ   Retaining wall works

Ÿ   ELS works,

Ÿ   Diaphragm Wall, Barrette construction and king post installation works

Ÿ   D-wall drill cutting works

Ÿ   Construction works for subway extension

Ÿ   Tree protection works next to existing BGO,

Ÿ   Drainage improvement works,

Ÿ   Sheet piling works,

Ÿ   Excavation and Lateral Support for U-structure,

Ÿ   Pipe piling & grouting works,

Ÿ   Utility diversion works,

Ÿ   Retaining wall works

Ÿ   ELS works,

Ÿ   Diaphragm Wall, Barrette construction and king post installation works

Ÿ   D-wall drill cutting works

Ÿ   Construction works for subway extension

Ÿ   Tree protection works next to existing BGO,

Ÿ   Drainage improvement works,

Ÿ   Excavation and Lateral Support for U-structure,

Ÿ   Pipe piling & grouting works,

Ÿ   Utility diversion works,

Ÿ   Retaining wall works

Ÿ   ELS works,

Ÿ   D-wall drill cutting works

Ÿ   Construction works for subway extension

2.5.8.     Contract no. HY/2011/08 Central - Wan Chai Bypass (CWB) Tunnel Buildings, Systems and Fittings, and Works Associated with Tunnel Commissioning under FEP-11/364/2009B. During the reporting period, the principal work activities are summarized in Table 2.11

Table 2.11 Principal Work Activities for Contract no. HY/2011/08

December 2015

January 2016

February 2016

Ÿ   West Ventilation Building Construction

Ÿ   East Ventilation Shaft Construction

Ÿ   Tunnel Thermal Barrier Construction

 

Ÿ   Construction of Ventilation Buildings, inclusive of East Ventilation Shaft, West Ventilation Building

Ÿ   Construction of Tunnel Thermal Barrier

 

Ÿ   Construction of Ventilation Buildings, inclusive of East Ventilation Shaft, West Ventilation Building

Ÿ   Construction of Tunnel Thermal Barrier

Ÿ   Installation of Electricals and Mechanicals

2.5.9.     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 Station

Station

Description

M1a

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

*M7e

International Finance Centre (Eastern End of Podium)

M7w

International Finance Centre (Western End of Podium)

M8

City Hall

* Remark 1: Location ID has been updated from M7 to M8 for City Hall

* Remark 2: M7e has become a reference station starting from 7 Aug 2012

Real time Noise Monitoring Stations

3.1.2.     The noise 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 Real Time Noise Monitoring Station

District

Station

Description

Tin Hau

RTN1

FEHD Hong Kong Transport Section Whitefield Depot

North Point

RTN2a

Electric Centre

North Point

RTN3

Po Leung Kuk Yu Lee Mo Fan Memorial School

Tin Hau

RTN4

Causeway Bay Community Centre

* RTN2 was relocated from Oil Street Community Liaison Centre to Electric Centre on

05 Oct 2012 and re-designated as RTN2a.

 

 

 

 

Noise Monitoring Parameters, Frequency and Duration

3.1.3.     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.

3.1.4.     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.

3.1.5.     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.

3.1.6.     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.

Monitoring Equipment

3.1.7.     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.

3.1.8.     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.

3.1.9.     The sound level meter shall be checked using an acoustic calibrator generating a known sound pressure level at a known frequency before deployment to the site and during each site visit. Measurements may be accepted as valid only if the calibration level from before and after the noise measurement agree to within 1.0 dB.

3.2.          Air quality monitoring

Air Quality Monitoring Stations

3.2.1.     The air quality monitoring stations for the Project are listed and 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 Air quality 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

MA1e

International Finance Centre (Eastern End of Podium)

Central

MA1w

International Finance Centre (Western End of Podium)

Central

Remarks*: The location ID of monitoring station CMA1b was updated as Oil Street Site Office in April 2013. With respect to the removal of Oil Street Site Office, the respective air quality monitoring station CMA1b was finely adjusted on 11 September 2015.

Remarks**: 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.

 

Air quality 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.