Contract No: HK/2011/07

 

Wanchai Development Phase II and Central Wanchai Bypass

Sampling, Field Measurement and Testing Works (Stage 2)

 

Environmental Permit no. EP-356/2009,

Further Evironmental permit nos. fep-02/356/2009, FEP-03/356/2009, Fep-04/356/2009 ,Fep-05/356/2009 AND  Fep-06/356/2009

 

Monthly Environmental Monitoring & Audit Report

 

- APRIL 2013 -


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

 

 

 

 

 

Certified by:



 

 

 

 

 

                                               

Raymond Dai

Environmental Team Leader

 

 

 

DATE:

 

 

May 2013


Table of contents

 

EXECUTIVE SUMMARY. 4

1.     Introduction. 14

1.1        Scope of the Report 15

1.2        Structure of the Report 15

2.     Project Background. 17

2.1        Background. 17

2.2        Scope of the Project and Site Description. 17

2.3        Division of the Project Responsibility. 18

2.4        Project Organization and Contact Personnel 19

3.     Status of Regulatory Compliance. 27

3.1        Status of Environmental Licensing and Permitting under the Project 28

4.     Monitoring Requirements. 38

4.1        Noise Monitoring. 40

4.2        Air Monitoring. 41

4.3        Water Quality Monitoring. 44

5.     Monitoring Results. 50

5.1        Noise Monitoring Results. 50

5.2        Real-time Noise Monitoring. 52

5.3        Air Monitoring Results. 52

5.4        Water Monitoring Results. 54

5.5        Waste Monitoring Results. 61

6.     Compliance Audit. 64

6.1        Noise Monitoring. 66

6.2        Real-time noise Monitoring. 66

6.3        Air Monitoring. 66

6.4        Water Quality Monitoring. 67

6.5        Review of the Reasons for and the Implications of Non-compliance. 71

6.6        Summary of action taken in the event of and follow-up on non-compliance. 71

7.     Cumulative Construction Impact due to the Concurrent Projects. 71

8.     Environmental Site Audit. 73

9.     Complaints, Notification of Summons and Prosecution. 75

10.    Conclusion. 78


lIST OF TABLES

 

Table I         Summary of Water Quality Monitoring Exceedances in Reporting Month

Table II        Summary of Enhanced Dissolved Oxygen Monitoring Exceedances in Reporting Month

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 3.1      Summary of the current status on licences and/or permits on environmental protection pertinent to the Project

Table 3.4      Cumulative Summary of Valid Licences and Permits under Contract no. HK/2009/01

Table 3.5      Summary of submission status under FEP-02/356/2009 Condition

Table 3.6      Cumulative Summary of Valid Licences and Permits under Contract no. HK/2009/02

Table 3.7      Summary of submission status under FEP-03/356/2009 Condition

Table 3.8      Cumulative Summary of Valid Licences and Permits under Contract no. HY/2009/15

Table 3.9      Summary of submission status under FEP-04/356/2009 Condition

Table 3.10    Cumulative Summary of Valid Licences and Permits under Contract no. HK/2010/06

Table 3.11    Summary of submission status under EP-356/2009 and FEP-05/356/2009 Condition

Table 3.12    Cumulative Summary of Valid Licences and Permits under Contract no. HY/2009/19

Table 3.13    Cumulative Summary of Valid Licences and Permits under Contract no. HK/2012/08

Table 3.14    Summary of submission status under EP-356/2009 and FEP-06/356/2009 Condition

Table 4.1      Noise Monitoring Station

Table 4.2      Real Time Noise Monitoring Station

Table 4.3      Air Monitoring Station

Table 4.4     Marine Water Quality Stations for Water Quality Monitoring

Table 4.5      Marine Water Quality Monitoring Frequency and Parameters

Table 4.6     Marine Water Quality Stations for Enhanced Water Quality Monitoring

Table 4.7     Marine Water Quality Stations for Additional DO Monitoring

Table 5.2     Noise Monitoring Station for Contract nos. HK/2009/01, HK/2009/02 and HK/2010/06

Table 5.3     Noise Monitoring Station for Contract no. HY/2009/15

Table 5.4     Noise Monitoring Station for Contract no. HY/2009/19

Table 5.5      Real Time Noise Monitoring Station for Contract no. HY/2009/19

Table 5.7    Air Monitoring Station for Contract no. HK/2009/01

Table 5.8     Air Monitoring Station for Contract no. HK/2009/02

Table 5.9     Air Monitoring Station for Contract no. HY/2009/15

Table 5.10    Air Monitoring Stations for Contract no. HY/2009/19

Table 5.11  Water Monitoring Stations for contracts with respect to remaining DP3

work areas after the completion of DP5 & DP6 in 2012 and intake diversion in 2013

Table 5.12    Water Monitoring Stations for Contract no. HK/2009/01

Table 5.13    Water Monitoring Stations for Contract no. HK/2009/02

Table 5.14    Water Monitoring Stations for Contract no. HK/2010/06

Table 5.15    Water Monitoring Stations for Contract no. HY/2009/15

Table 5.16    Water Monitoring Stations for Contract no. HY/2009/19

Table 5.17    Summary of Water Quality Monitoring Exceedances in Reporting Month

Table 5.18    Summary of Enhanced Dissolved Oxygen Monitoring Exceedances in Reporting Month

Table 5.19    Details of Waste Disposal for Contract no. HK/2009/01

Table 5.20    Details of Waste Disposal for Contract no. HK/2009/02

Table 5.21    Details of Waste Disposal for Contract no. HY/2009/15

Table 5.22    Details of Waste Disposal for Contract no. HK/2010/06

Table 5.23    Details of Waste Disposal for Contract no. HY/2009/19

Table 8.1     Summary of Environmental Inspections for Contract no. HK/2009/01

Table 8.2     Summary of Environmental Inspections for Contract no. HK/2009/02

Table 8.3     Summary of Environmental Inspections for Contract no. HY/2009/15

Table 8.4     Summary of Environmental Inspections for Contract no. HK/2010/06

Table 9.1      Cumulative Statistics on Complaints

Table 9.2      Cumulative Statistics on Successful Prosecutions

Table 10.1    Construction Activities and Recommended Mitigation Measures in Coming Reporting Month

 

 

lIST OF FIGUREs

 

Figure 2.1       Project Layout

Figure 2.2       Project Organization Chart

Figure 2.3     Locations of Environmental Monitoring Stations

 

 

 

lIST OF APPENDIces

 

Appendix 3.1  Environmental Mitigation Implementation Schedule

Appendix 4.1  Action and Limit Level

Appendix 4.2  Copies of Calibration Certificates

Appendix 5.1  Monitoring Schedule for Reporting Month and Coming month

Appendix 5.2  Noise Monitoring Results and Graphical Presentations

Appendix 5.3  Air Quality Monitoring Results and Graphical Presentations

Appendix 5.4  Water Quality Monitoring Results and Graphical Presentations

Appendix 5.4a  Additional Dissolved Oxygen Monitoring Results

Appendix 5.5  Real-time Noise Monitoring Results and Graphical Presentations

Appendix 6.1  Event Action Plans

Appendix 6.2  Summary for Notification of Exceedance

Appendix 7.1  Complaint Log

Appendix 8.1  Construction Programme of Individual Contracts


 

EXECUTIVE SUMMARY

  1. This is the Environmental Monitoring and Audit (EM&A) Monthly Report íVApril 2013 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-05/356/2009 and FEP-06/356/2009. This report presents the environmental monitoring findings and information recorded during the period March 2013 to April 2013. The cut-off date of reporting is at 27th of each reporting month.

 

Construction Activities for the Reported Period

 

  1. During this reporting period, the major work activities for Contract no. HK/2009/01 included:

Marine Works (at Wan Chai)

íP          Rockfilling at the northern part of HKCEC3E (East of HKCEC) between CH290 and CH385.

íP          Installation of shoring for temporary open channel between CH290 and CH385.

íP          Construction of mass concrete coping for new seawall.

íP          Installation of ELS for construction of proposed box culvert Bay 8 and Bay 9.

             

Cross-Harbour Watermains Installation (CHA & CHB) and Marine Works (at TST)

íP          Grade 75 Rockfilling and rock protection to cross-harbour watermains.

íP          Installation of interim connecting pipe between existing main and the proposed pipeline at Salisbury Garden.

íP          CCTV inspection for cross-harbour water main (including CHA, CHB, CHE & CHF) .

íP          Installation of interim connecting pipe between existing main and the proposed pipeline at Lung King Street.

íP          Installation of interim connecting pipe between land main and submarine pipeline at Zone B1-5A.

íP          Flushing and sterilization for cross harbour watermains (whole length).

íP          Pre-handover and final handover by WSD .

íP          HEC and PCCW cabling works in Zone A1-1 which connected to the proposed transformer rectifier at new reclaimed area.

 

Fresh Watermains, Cooling Watermains and Salt Watermains (On Land)

íP          Mainlaying works at Zone B6-1B, B6-2A, B6-4, B6-5B, A2-3A, A1-5C, A3-3C, C1-2 and X2-1.

íP          Washout pit construction in Zone A2-3A and A3-2B and Reinstatement works in Zone A3-2B.

íP          TTA at Zone A1-5C at Convention Avenue. Salt water main laying works was carried out in combined TTA Zone of A2-3A and A1-5C.

íP          Mainlaying works at Zone C1-2 and X2-1.

íP          Mainlaying works in Zone B6-4 and B6-5B.

íP          Mainlaying works in Zone B6-1B and B6-2A.

íP          Connection works for 2nd Intake pipe of Convention Plaza (CP).

íP          Trench excavation in Zone X2-1 of Convention Avenue and mainlaying works.

 

Tunnel Works

íP          Pre-drilling works for CWB (Stage 2).

íP          Diaphragm wall construction works at Stage 2 (North). The remaining Diaphragm wall would be carried out after mobilization of Trench Cutter on site.

íP          Temporary bulkhead wall construction works between Stage1 / Stage2.

íP          Trench cutter was mobilized to Site.

íP          Pre-bored H piling works for CWB (Stage1b).

íP          2nd Piling rig for pre-bored H piling works under atrium was mobilized to Site.

 

E & M

íP          Full commissioning test for Cooling Water Pumping Station P3.

íP          Handover inspection for Cooling Water Pumping Station P1.

íP          Handover inspection for Cooling Water Pumping Station P4.

íP          Full commissioning test for Cooling Water Pumping Station P5.

 

Application of Epoxy Lining to Existing Box Culvert M (VO No.31)

íP          Epoxy lining application to the eastern box of the existing Box Culvert M.

íP          Epoxy lining application to the western box of the existing Box Culvert M.

 

  1. During this reporting period, the major work activities for Contract no. HK/2009/02 included:

íP          Modification work of PTI at Expo Drive East.

íP          Modification of existing covered walkway along Expo Drive East.

íP          Pressure tests for both intake main of GE/HC and SHK in the whole WCR1 area. 

íP          Remedial works for P7, P8. Mini pile foundation to support the rectified pipeworks.

íP          Major E&M works and their T&C in Cooling Water Pumping Stations P7, P8 and P9.

íP          Footpath reinstatement for the trenches near Harbour Centre.

íP          Dry tests at WSD Salt Water Pumping Station.  Wet test after completion of the proposed intake culvert.

íP          Drilling hole and installation of pipe bracket for aeration and chlorination pipe inside salt water intake culvert between Bay 4 and Bay 11 (except Bay 7) .

íP          Installation of stoplog at Bay 2A of the proposed intake culvert.

íP          Remedial works for concrete plug at Bay 1B.

íP          Mainlaying works for DN800 salt watermains (CHS8A) at Ex-Pet Garden.  Bend block at CH175 - CH195 and backfilling work.

íP          Backfilling works of Bay19B at the junction between Wan Shing Street and Hung Hing Street.

íP          The ABWF works in WSD Salt Water Pumping Station, including maintenance platform and external finishes.

íP          The whole sewage outfall system under Section VI was handed over to DSD.

íP          Backfilling for the receiving pit adjacent to WCE PTW at Hung Hing Road.

íP          Re-construction for the DSD Pumping Station boundary wall at Hung Hing Road.

íP          The manhole for 1050 dia. concrete pipe between Bay 1 and the existing drainage.

íP          Installation of concrete block and plastering works wall for toilet over PT2 & PT3 at Level 1 (+4.15mPD).

íP          Concreting of base slab and stem wall for PT4 & PT5 at Level 1 (+4.15mPD) and top-slab.

íP          Installation of Steel frame on Observation Deck.

íP          Formwork erection for the late cast roof slab.

íP          Concreting of western concrete staircase to Level 2; and its construction to Observation Deck Level.

íP          Concreting of base slab and stem wall for PT1 at Level 1 (+4.15mPD).

íP          Concreting of Feature Tower on Observation Deck.

íP          Installation of bracket and railing for the proposed movable ramp system.

íP          Planter wall and parapet wall construction at Level 2 and Observation Deck.

íP          ABWF including brickworks and E&M cable tray at 1/F, 2/F and M/F.

íP          Dredging of TWCR4 dredging works.

 

  1. During this reporting period, the major work activities for Contract no. HY/2009/15 included:

íP          Removal of eastern breakwater of CBTS

íP          Installation of temporary wave protection barrier at eastern breakwater

                         

  1. During this reporting period, the major work activities for Contract no. HK/2010/06 included:

íP          Sheet Piling Works

íP          Utility Diversion Works

íP          Road surfacing preparatory works

íP          Precast Unit Box Installation Preparation Works (mainland China)

 

  1. During this reporting period, the major work activities for Contract no. HY/2009/19 included:

íP          Bored piling (Land)

íP          D-wall and Barrette Construction

íP          Construction works for Box Culvert T1

íP          Construct ion of socket-H pile

íP          Construction works for Culvert U1

íP          Dismantling of marine platform

íP          Demolition of parapet at IEC Link

íP          Construction of Pile caps & columns (Marine)

íP          Construction of dewatering well for Cut & Cover Tunnel

íP          D8-D9 Gantry Fabrication for precast segment

íP          ELS for Cut & Cover Tunnel

íP          Laying of 1500f pipe

 

  1. During this reporting period, the major work activities for Contract no. HK/2012/08 included:

íP          Site preparation works

íP          Site survey

 

Noise Monitoring

  1. Noise monitoring during daytime and restricted hour were conducted at the stations M1a, M2b, M3a, M4b, M5b and M6 on a weekly basis in the reporting month.
  2. No action and 4 limit level exceedances at M6 íV HK Baptist Church Henrietta Secondary School were recorded on 3, 12, 16 and 23 April 2013 in this reporting month. Execeedances on 3, 16 and 23 April 2013 were concluded as non-project related and exceedance on 12 April 2013 was concluded as Project related.
  3. Due to adverse weather condition, the noise monitoring at the following stations were rescheduled:

M3a: from 11 April 2013 to 12 April 2013

M4b: from 11 April 2013 to 12 April 2013

M5b: from 2 April 2013 to 3 April 2013 and from 11 April 2013 and 12 April 2013

M6: from 2 April 2013 to 3 April 2013 and from 11pril 2013 and 12 April 2013

 

Real-time Noise Monitoring

  1. As the land-based piling and filling works- DP3 at Tin Hau had been completed on 3 September 2012 and confirmed by RSS, the real-time noise monitoring results at FEHD Hong Kong Transport Section Whitfield Depot was excluded under EP-356/2009 since 28 November 2012.
  2. The real-time noise monitoring at RTN2-Oil Street Community Liaison Centre has been relocated to City Garden Electric Centre (RTN2a- Electric Centre) on 5 Oct 2012, which is a representative of 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. 24-hour real time noise monitoring was conducted at RTN2a íV Hong Kong Electric Centre. No project related exceedance was recorded in the reporting month.

 

Air Quality Monitoring

  1. Due to extension of site boundary by contractor of HY/2009/19, location of air monitoring station CMA1b íV Oil Street Community Liaison Centre has been finely adjusted on 21 April 2012.
  2. The location ID of air monitoring station CMA1b was updated as Oil Street Site Office in the reporting month.
  3. Due to lack of electricity supply, the 24-hr TSP monitoring at the following stations were

Rescheduled,

CMA1b: from 19 Apr 2013 to 20 Apr 2013

CMA3a: from 8 Apr 2013 to 9 Apr 2013 and from 25 Apr 2013 to 26 Apr 2013

  1. 1-hour and 24-hour Total Suspended Particulates (TSP) monitoring were conducted at CMA1b íV Oil Street Site Office; CMA2a - Causeway Bay Community Center; CMA3a - CWB PRE Site Office Area; CMA4a íV Society for the Prevention of Cruelty to Animals; CMA5a - Children Garden opposite to Pedestrian Plaza; MA1e and MA1w íV International Finance Centre eastern and western wing on every six days basis.
  2. 2 action level and no limit level exceedances were recorded during 1hr-TSP monitoring on 15 April 2013 at CMA1b íV Oil Street Site Office in this reporting month. The exceedances were concluded as non-project related.
  3. 2 action level and no limit level exceedances were recorded during 1hr-TSP monitoring on 15 April 2013 at CMA3a íV CWB PRE Site Office in this reporting month. The exceedances were concluded as non-project related.
  4. 1 action level and no limit level exceedances were recorded during 1hr-TSP monitoring on 15 April 2013 at CMA6a íV WD2 PRE Office in this reporting month. The exceedances were concluded as non-project related.

 

Water Quality Monitoring

 

  1. As confirmed by CWB RSS, the marine pilling works under contract HY/2009/19 was confirmed completed by 4 March 2013.  The water quality monitoring at the respective monitoring stations C8 and C9 were temporarily suspended since 30 March 2013.
  2. With respect to status of cooling intakes relocation, WQM events on 22 April 2013 at monitoring stations C2, C3, C4e and C4w were temporarily suspended to confirm the commissioning status of the relocated pump stations with the WDII RSS and the IEC for preparation of relocation of the WQM stations to the relocated cooling intake pump stations
  3. Upon confirmation with WDII RSS and the IEC, water quality monitoring at relocated intakes monitoring location P1, P3, P4 and P5 were commenced since 24 April 2013.
  4. WDII/RSS advised that the dredging works for submarine pipeline at Victoria Harbour had been completed in January 2012. Therefore, the concurrent dredging activities at Sewage Pipeline Zone and reclamation shoreline zone TCBR under the EP-356/2009 scenario 2B no longer exist. As such, with reference to Table 5.39 of the EIA Report for Wan Chai Development Phase II and Central-Wan Chai Bypass, the application of silt screen for cooling water intakes for Queensway Government Offices was suspended and the others were remains unchanged.
  5. Based on the joint inspection on 4 Jan 2012 for the NPR area, the 4-week water quality monitoring at WSD9, WSD10, WSD15, WSD17, C8, C9 to confirm no water deterioration with respect to NPR was commenced since 7 Jan 2012 and was completed on 6 Feb 2012 water quality monitoring.
  6. Water quality monitoring at WSD10 and WSD15 will be temporary suspended while water quality monitoring at WSD9 and WSD17 was implemented with respect to HK/2009/02 from 8 Feb 12 onwards;
  7. Water quality monitoring at C8 and C9 have been implemented with respect to HY/2009/19 since the marine bore piling work started on 28 Jan 12.
  8. Due to the marine piling under Contract no. HY/2009/19 was completed on 4 March 2013, the temporary suspension of impact water quality monitoring at C8 and C9 from 4 March 2013 have been monitored for 4-week period after the completion of marine works to confirm no water deterioration.
  9. Based on the safety concern when external façade refurbishment was conducted by contractor employed by Provident Centre (C9) between 9 January 2012 to 30 July 2012 which caused to the inaccessibility of sampling either land and marine since 3 Feb 2012, there is a fine adjustment of the sampling location of water quality monitoring at C9 since 10 March 2012 to the closest accessible point prior to the completion of the external façade refurbishment work.
  10. Due to the access of water monitoring station at WSD19 was blocked by LCSD construction works from 3 April 2012 to 2 May 2012 and lead to the inaccessibility of sampling either land and marine, there is a fine adjustment of the sampling point of WSD 19 since 5 April 2012 to the closest accessible point prior to the completion of the construction activities.
  11. Due to the dredging works for Cross Harbour Water Mains from Wan Chai to Tsim Sha Tsui- DP6 was completed on 26 March 2012, the temporary suspension of impact water quality monitoring at WSD7 and WSD20 after 27 April 2012 for the water quality monitoring at WSD7 and WSD20 have been monitored for 4-week period after the completion of DP6 to confirm no water deterioration.
  12. Water quality monitoring at 14 monitoring stations was conducted three days per week during the reporting period. The action and limit level exceedances of water quality monitoring are summarized in Table I.

 


Table I    Summary of Water Quality Monitoring Exceedances in Reporting Month

 

Contract no.

Water Monitoring Station

Mid-flood

Mid-ebb

DO

Turbidity

SS

DO

Turbidity

SS

AL

LL

AL

LL

AL

LL

AL

LL

AL

LL

AL

LL

HK/2009/01

WSD19

0

0

0

0

0

0

0

0

1

3

1

2

 

C1

0

0

0

0

0

0

0

0

0

0

0

0

 

C3

0

5

0

0

0

0

0

5

0

0

0

0

 

C4e

0

5

0

0

1

0

0

4

0

1

0

0

 

C4w

1

3

0

0

1

0

1

4

0

0

0

0

 

P1

0

0

0

0

0

0

0

0

0

0

0

0

 

P3

0

0

0

0

0

0

0

0

0

0

0

0

 

P4

0

0

0

0

0

0

0

0

0

0

0

0

P5

0

0

0

0

0

0

0

0

0

0

0

0

Monitoring finished on 27 April 2012

WSD20

0

0

0

0

0

0

0

0

0

0

0

0

WSD7

0

0

0

0

0

0

0

0

0

0

0

0

HK/2009/01

& HK/2010/06

C2

0

0

0

0

0

0

0

0

0

0

0

0

HK/2009/02

C5e

0

0

0

0

0

0

0

0

0

0

0

0

 

C5w

0

0

0

0

0

0

0

0

0

0

0

0

Monitoring started on

8 Feb 2012

WSD21

0

0

0

0

2

0

0

0

0

0

0

0

WSD9

0

0

0

0

0

0

0

0

0

0

0

0

 

WSD17

0

0

0

0

1

0

0

0

0

0

0

0

HY/2009/15

C7

0

0

0

0

0

0

0

0

0

0

0

0

HY/2009/19

Monitoring started on 28 Jan 2012

C8

0

0

0

0

0

0

0

0

0

0

0

0

C9

0

0

1

0

0

0

0

0

0

0

0

0

Total

1

13

1

0

5

0

1

13

1

4

1

2

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.

         -   WSD9 and WSD17 were implemented with respect to HK/2009/02 from 8 Feb 2012.

-   4-week water quality monitoring at WSD9, WSD10, WSD15, WSD17, C8 and C9 were completed on 6 Feb 2012.

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

-       C8 & C9 was temporary suspended on 30 March 2013 due to the marine works for Contract no. HY/2009/19 had been completed on 4 March 2013

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

 

  1. Investigation revealed that exceedances from 8 to 12 April 2013 at C3, C4e and C4w were project-related exceedances. All the other remaining exceedances were concluded as non-project-related. The details of the recorded exceedances can be referred to the Section 6.4.
  2. Enhanced DO monitoring at 4 monitoring stations in Causeway Bay Typhoon Shelter and Ex-Public Cargo Works Area was conducted three days per week during the reporting period. The action and limit level exceedances of water quality monitoring are summarized in Table II.

      


Table II   Summary of Enhanced Dissolved Oxygen Monitoring Exceedances in Reporting Month

Contract no.

Water Monitoring Station

Mid-flood

Mid-ebb

DO

DO

AL

LL

AL

LL

HY/2009/15

C6

0

0

0

0

C7

0

0

0

0

Ex-WPCWA SW

0

0

1

1

Ex-WPCWA SE

0

0

2

0

Total

0

0

3

1

 

  1. There were 3 action level exceedances and 1 limit level exceedances of enhanced dissolved oxygen recorded in this reporting month. Investigation found that the exceedances are not related to the Project works. The details of the recorded exceedances can be referred to the Section 6.4.
  2. 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.

 

Complaints, Notifications of Summons and Successful Prosecutions

  1. There was no environmental complaint received in this reporting month.

 

Site Inspections and Audit

  1. The Environmental Team (ET) conducted weekly site inspections for Contract nos. HK/2009/01, HK/2009/02, HY/2009/15 HK/2010/06, HY/2009/19 and HK/2012/08 under EP no. EP-356/2009 in the reporting month. Major observations and recommendations made during the audit sessions were rectified by the Contractors. No non-conformance was identified during the site inspections.

 

Future Key Issues

  1. In coming reporting month, the principal work activities of individual contracts are anticipated as follows:

 

Contract no. HK/2009/01 - Wan Chai Development Phase II íV Central íVWanchai Bypass at HKCEC

Marine Works

íP          Filling works up to +4.0mPD.

íP          Steel bridge construction over temporary open channel between CH220 and CH260.

íP          Construction of mass concrete coping for new seawall.

íP          Installation of ELS for construction of proposed box culvert Bay 8 and Bay 9. Subsequent Box Culvert construction for Bay 8 & 9.

íP          Backfilling to temporary water channel for subsequent demolition of promenade deck and pumping station at HKCEC Water Channel.

íP          Connection works of Pipeline D to exiting mains at Wan Chai.

íP          Connection works of Pipeline C to exiting mains at Wan Chai.

 

Fresh Watermains, Cooling Watermains and Salt Watermains (On Land)

íP          Works at Zone B6-1B, B6-2A, B6-4, B6-5B, A2-3A, A1-5C, A3-3C, C1-2 and X2-1.

íP          Mainlaying works at Zone A2-3A and A1-5C.

íP          Mainlaying works in Zone C1-2.

íP          Mainlaying works for proposed sewerage system in Zone B6-1B, B6-2A, B6-4.

íP          Mainlaying works at Zone X2-1.

íP           

Tunnel Works

íP          Installation of pre-bored H-pile in CWB Stage 1B under the atrium link (from Ch80 to Ch220).

íP          Installation of pre-bored H-pile in CWB Stage 1B under the atrium link (from Ch120 to Ch220).

íP          3rd Piling rig for pre-bored H piling works under atrium would be mobilized to Site.

íP          CWB diaphragm wall construction under the atrium lin.

íP          Construction of bulkhead Wall at Ch120.

íP          Pre-drilling works for CWB (Stage 3).

íP          Demolition of the promenade deck and pumping stations at HKCEC Water Channel.

 

E&M Works

íP          Full commissioning for Cooling Water Pumping Station P5.

íP          Handover inspection for Cooling Water Pumping Station P3.

íP          Handover inspection for Cooling Water Pumping Station P5.

 

Application of Epoxy Lining to Existing Box Culvert M (VO No.31)

íP          Epoxy lining application to the western box of the existing Box Culvert M.

 

 

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

íP          Footpath reinstatement works of cooling mains near Harbour Centre / Great Eagle Centre.

íP          Remedial works and subsequent T&C for CRB intake pipes within WCR1 area. Notification to stakeholder for switching over for the proposed cooling water intake system.

íP          Construction of pile caps for rectifying the subsided intake pipes for both GE/HC and SHK.

íP          Remaining DN800 salt watermins (CHS8A) installation and backfilling works inside Ex-pet Garden.

íP          Construction of remedial works for the concrete plug at Bay 1B and the subsequent construction of Bay 1B and Bay 2B Intake Culvert.

íP          All mainlaying works and prepare for connection with the existing DN600 salt watermains at Hung Hing Road.

íP          Leakage test for the installed stoplog at Bay 2A of Intake Culvert

íP          Synthetic woods and façade works for the external wall of WSD Salt Water Pumping Station.

íP          Backfilling to Bay 6 to Bay 11 of Intake Culvert.

íP          PLC & SCADA functional and performance tests after completion of training to WSD staff.