Contract No: HK/2011/07

 

Wanchai Development Phase II and Central Wanchai Bypass

Sampling, Field Measurement and Testing Work (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,

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

 

Quarterly Environmental Monitoring
and Audit Report

 

- September 2014 to November 2014 -

 

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:

 

 

December 2014


Table of contents

 

EXECUTIVE SUMMARY. 4

1. Introduction. 12

1.1 Scope of the Report 12

1.2 Structure of the Report 12

2. Project Background. 13

2.1 Background. 13

2.2 Scope of the Project and Site Description. 13

2.3 Division of the Project Responsibility. 14

2.4 Project Organization and Contact Personnel 16

2.5 Principal Work and Activities. 18

3. Monitoring Requirements. 21

3.1. Noise Monitoring. 21

3.2. Air Monitoring. 23

3.3 Water Quality Monitoring. 25

4. Monitoring Results. 31

4.1. Noise Monitoring Results. 31

4.2. Real Time Noise Monitoring Results. 33

4.3. Air Monitoring Results. 34

4.4 Water Monitoring Results. 36

4.5 Waste Monitoring Results. 42

5. Compliance Audit. 48

5.1. Noise Monitoring. 48

5.2. Real-time Noise Monitoring. 48

5.3. Air Monitoring. 48

5.4. Water Quality Monitoring. 48

5.5. Site Audit 50

5.6. Review of the Reasons for and the Implications of Non-compliance. 50

5.7. Summary of action taken in the event of and follow-up on non-compliance. 50

6. Complaints, Notification of Summons and Prosecution. 51

7. Cumulative Construction Impact due to the Concurrent Projects. 54

8. Conclusion. 55


lIST OF TABLES

 

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

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

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

Table IV Principal Work Activities for Contract no. HK/2010/06

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 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. HK/2009/01

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

Table 2.6 Principal Work Activities for Contract no. HY/2009/15

Table 2.7 Principal Work Activities for Contract no. HK/2010/06

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 3.1 Noise Monitoring Stations

Table 3.2 Real Time Noise Monitoring Station

Table 3.3 Air Monitoring Stations

Table 3.4 Marine Water Quality Stations for Water Quality Monitoring

Table 3.5 Marine Water Quality Monitoring Frequency and Parameters

Table 3.6 Marine Water Quality Stations for Enhanced Water Quality Monitoring

Table 4.1 Noise Monitoring Station for Contract nos. HK/2009/01 and HK/2009/02 and HK/2010/06

Table 4.2 Noise Monitoring Station for Contract nos. HY/2009/15

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

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

Table 4.5 Real Time Noise Monitoring Station for Contract no. HY/2009/11 and HY/2009/19

Table 4.6 Air Monitoring Stations for Contract no. HK/2009/01

Table 4.7 Air Monitoring Station for Contract no. HK/2009/02

Table 4.8 Air Monitoring Station for Contract no. HY/2009/15

Table 4.9 Air Monitoring Stations for Contract no. HY/2009/19

Table 4.10 Water Monitoring Stations for Contract no. HK/2009/01

Table 4.11 Water Monitoring Stations for Contract no. HK/2009/02

Table 4.12 Water Monitoring Stations for Contract no. HK/2012/08

Table 4.13 Water Monitoring Stations for Contract no. HY/2009/15

Table 4.14 Summary of Water Quality Monitoring Exceedances in Reporting period

Table 4.15 Summary of Enhanced Dissolved Oxygen Monitoring Exceedances in Reporting period

Table 4.16 Details of Waste Disposal for Contract no. HK/2009/01

Table 4.17 Details of Waste Disposal for Contract no. HK/2009/02

Table 4.18 Details of Waste Disposal for Contract no. HY/2009/15

Table 4.19 Details of Waste Disposal for Contract no. HK/2010/06

Table 4.20 Details of Waste Disposal for Contract no. HY/2009/19

Table 4.21 Details of Waste Disposal for Contract no. HK/2012/08

Table 4.22 Details of Waste Disposal for Contract no. HY/2010/08

Table 5.1 Summary of Water Quality Monitoring Exceedances in Reporting period

Table 5.2 Summary of Enhanced Dissolved Oxygen Monitoring Exceedances in Reporting period

Table 6.1 Cumulative Statistics on Complaints

Table 6.2 Cumulative Statistics on Successful Prosecutions

 

 

 

 

 

 

 

lIST OF FIGUREs

 

Figure 2.1 Project Layout

Figure 2.2 Project Organization Chart

Figure 3.1 Locations of Environmental Monitoring Stations

 

 

 

 

lIST OF APPENDIces

 

Appendix 2.1 Environmental Mitigation Implementation Schedule

Appendix 3.1 Action and Limit Level

Appendix 4.1 Noise Monitoring Graphical Presentations

Appendix 4.2 Air Quality Monitoring Graphical Presentations

Appendix 4.3 Water Quality Monitoring Graphical Presentations

Appendix 4.4 Real-time Noise Monitoring Results and Graphical Presentations

Appendix 5.1 Event Action Plans

Appendix 6.1 Complaint Log

Appendix 7.1 Construction Programme of Individual Contracts

EXECUTIVE SUMMARY

  1. This is the Quarterly Environmental Monitoring and Audit (EM&A) Report September 2014 to November 2014 prepared for the Project of Wan Chai Development Phase II and Central-Wanchai Bypass under Environmental Permit no. EP-356/2009 and Further Environmental permit nos. FEP-02/356/2009, FEP-03/356/2009, FEP-04/356/2009, FEP-05/356/2009, FEP-06/356/2009 and FEP-07/356/2009. This report presents the environmental monitoring and audit findings and information during the period from September 2014 to November 2014. The cut-off date of reporting is at 27th of each reporting period.

 

Construction Activities for the Reported Period

  1. During this reporting period, the principal work activities for Contract no. HK/2009/01 are summarized as below:

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

September 2014

October 2014

November 2014

Ÿ   Rock trimming works

Ÿ   Rock trimming works

Ÿ    Rock trimming works

 

  1. During this reporting period, the principal work activities for Contract no. HK/2009/02 are summarized as below:

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

September 2014

October 2014

November 2014

Ÿ   Works of covered walkway

Ÿ   ABWF works at section VIIIA

Ÿ   HHR Flyover Diversion at Stage 2

Ÿ   Demolition of Existing Wan Chai Ferry Pier

Ÿ   Works of covered walkway

Ÿ   Drainage work

Ÿ   ABWF work

Ÿ   Demolition of HHR Flyover Approach Ramp

Ÿ   Demolition of Existing Wan Chai Ferry Pier

Ÿ   Dredging and Reclamation at WCR3

Ÿ   Works of covered walkway

Ÿ   Drainage work

Ÿ   ABWF work

Ÿ   Demolition of Existing Wan Chai Ferry Pier

Ÿ   Dredging and Reclamation at WCR3

 

  1. Contract no. HY/2009/15 was commenced on 10 November 2010. During this reporting period, the principal work activities for Contract no. HY/2009/15 are summarized as below:

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

September 2014

October 2014

November 2014

          Construction works of East Ventilation Shaft

          Removal of temporary reclamation and seawall blocks at TPCWAE & TS4

          Demolition of D-Wall at TS2, TPCWAE & TS4

          Construction works of East Ventilation Shaft

          Removal of temporary reclamation, D-Wall and seawall blocks at TPCWAE & TS4

          Maintenance dredging

            Removal of temporary reclamation, D-wall and seawall blocks at TPCWAE & TS4

          Temporary reclamation works and installation of seawall blocks at TPCWAW

          Maintenance dredging

 

  1. Contract no. HK/2010/06 was commenced on 22 March 2011. During this reporting period, the principal work activities for Contract no. HK/2010/06 are summarized as below:

Table IV Principal Work Activities for Contract no. HK/2010/06

September 2014

October 2014

Ÿ   Nil

 

Ÿ   Nil

 

 

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

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

September 2014

October 2014

November 2014

Ÿ  Construction of Dolphin Cap

Ÿ  Construction of Dolphin Cap

Ÿ   Construction of Dolphin Cap

 

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

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

September 2014

October 2014

November 2014

Ÿ   ELS for box culvert La at Lung King Street

Ÿ   Installation of caisson seawall

Ÿ   Removal of rock armour

Ÿ   Filling

Ÿ   Sheet piling

Ÿ   ELS for box culvert L at Lung King Street

Ÿ   Removal of rock armour

Ÿ   Placing of rockfill

Ÿ   Sheet piling

Ÿ   Excavation of Dry Dock and disposal of soil

 

Ÿ   ELS for box culvert L at Lung King Street

Ÿ   Removal of rock armour

Ÿ   Dry dock construction

Ÿ   Installation of caisson seawall

 

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

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

September 2014

October 2014

November 2014

Ÿ   Rock filling works

Ÿ   Dredging works

Ÿ   Seawall blocks installation

Ÿ   Sheet pilling works at outfall Q

Ÿ   Installation of water tank

 

Ÿ   Rock filling works

Ÿ   Dredging works

Ÿ   Seawall blocks installation

Ÿ   Sheet piling works at Outfall Q

Ÿ   Seawater intake diversion works

Ÿ   Installation of water tank

Ÿ   Rock filling works

Ÿ   Dredging works

Ÿ   Seawall blocks installation

Ÿ   Sheet piling works, welding & struts installation works at Outfall Q

Ÿ   Seawater intake diversion works

Ÿ   Installation of water tank

 

Noise Monitoring

  1. Noise monitoring during day time and evening time were conducted at the M1a, M2b, M3a, M4b, M5b and M6 on a weekly basis in the reporting period. The Action and Limit level exceedances recorded in the reporting period are listed below. Investigation found that exceedances were not related to the Project. Investigation found that exceedances were not related to the Project.
  2. No action and limit level exceedance was recorded in September, October and November 2014 reporting month.

 

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. Real-time noise monitoring at FEHD Hong Kong Transport Section Whitefield Depot and Oil Street Community Centre have been commenced on 5 October 2010 for the filling works of Contract no. HY/2009/11.
  3. Real-time noise monitoring at FEHD Hong Kong Transport Section Whitefield Depot commenced external wall renovation since 1 June 2012
  4. Oil Street Community Liaison Centre was confirmed to be demolished in mid-October by CWB RSS. This presented a need for relocation of RTN2 Oil Street Community Liaison Centre. After liaison with Hong Kong Electric, permission was granted on 21 Sep 2012 for real time noise monitoring set up at City Garden Electric Centre (RTN2a Electric Centre), which is a representative of the noise sensitive receiver City Garden. 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. 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.
  5. No project related exceedance was recorded in September, October and November 2014 reporting months at RTN2a-Hong Kong Electric Centre during this reporting quarter.

 

Air Quality Monitoring

  1. Due to electricity interruption, the following 24hr TSP monitoring events were rescheduled in this reporting quater,

24hr TSP monitoring at CMA5a was rescheduled from 24 September 2014 to 25 September 2014.

24hr TSP monitoring at CMA5a was rescheduled from 29 September 2014 to 30 September 2014.

24hr TSP monitoring at CMA3a, CMA4a and CMA5a were rescheduled from 20 November 2014 to 21 November 2014.

  1. The location ID of air monitoring station CMA1b was updated as Oil Street Site Office in April 2013.
  2. 1hr and 24hr TSP monitoring were conducted at CMA1b, CMA2a, CMA3a, CMA4a, CMA5a and CMA6a in the reporting period.
  3. The odour patrol along the odour route with 7 sniffing locations was conducted by a qualified odour patrol member on 2, 18 and 29 September 2014 at the concerned hours (afternoon for higher daily temperature). No Action and Limit Level was recorded during September reporting month.

 

Water Quality Monitoring

  1. With respect to the reported public safety concern and blockage of major traffic around Admiralty and Wanchai North, water quality monitoring scheduled on 29 September 2014 for both flood tide and ebb tide was cancelled.
  2. Due to blockage of access to the Enhance DO Monitoring Stations Ex-PCWA, Enhance DO monitoring at Ex-PCWA SE and SW station were cancelled on 22 Oct 2014 during ebb tide.
  3. Water quality monitoring was conducted at 8 monitoring stations namely WSD19, C1, C7, P1, P3, P4, P5 and RW21-P789 during the reporting period.
  4. There were 1 action level and 2 limit level exceedances of turbidity, and 1 action level and 2 limit level exceedances of SS recorded in September reporting month. Investigation found that exceedances are not related to the Project works.
  5. There were 12 action level and 12 limit level exceedances of turbidity, and no action level and 2 limit level exceedances of SS recorded in October reporting month. Investigation found that the exceedances were not related to Project works.
  6. There were 3 action level and 3 limit level exceedances of turbidity recorded in the reporting month. Investigation found that the exceedances were not related to Project works.
  7. 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.
  8. There were 3 action level exceedances and 9 limit level exceedances of enhanced dissolved oxygen recorded in September reporting month. Investigation found that the exceedances are not related to the Project works.
  9. There were 8 action level exceedances and 16 limit level exceedances of enhanced dissolved oxygen recorded in October reporting month. Investigation found that the exceedances are not related to the Project works.
  10. There were 1 action level exceedances and 7 limit level exceedances of enhanced dissolved oxygen recorded in November reporting month. Investigation found that the exceedances are not related to the Project works.

xxx.        With respect to the commencement of temporary reclamation works and seawall construction at Ex-PCWAW zone and diverted culvert extension, the location of the Enhance DO monitoring stations (Ex-PCWASW and Ex-PCWA SE) were finely adjusted to the PCWAE since 7 November 2014.

  1. With respect to the commencement of marine dredging works at WCR3 under contract HK/2009/02. The respective water quality monitoring station C1 were associated with HK/2009/01 and HK/2009/02.
  2. As confirmed by CWB RSS, the operation of the pump station for Windsor House Cooling Water was suspended from 22 Oct 2014 for the Windsor House intake cooling intake scheme and temporary supply of freshwater from WSD water mains was provided to cooling water intake The water quality monitoring for the respective cooling water intake at WQM station C7 was temporarily suspended from 22 Oct 2014. The water quality monitoring at monitoring station C7 for Windsor House Cooling water intake shall be resumed after the completion of the diversion scheme for the diverted intake subject to CWB RSS advice.
  3. With respect to the commencement of filling works at TS3 and the formation of TZ3 reclamation zone, the enhance DO monitoring at Enhance monitoring station C7 was temporarily suspended from 22 Oct 2014.
  4. As confirmed by WDII RSS and IEC, the cross harbor dredging works have completed since 16 March 2012 while the dredging works for submarine outfall pipeline has completed since 29 November 2011, considering current construction stage and dredging Scenario, the water quality monitoring at stations WSD9 and WSD17 was temporarily suspended since 8 September 2014 flood tide.
  5. Action and Limit level of water quality monitoring was transited from wet season to dry season from 1 October 2014.
  6. As advised by WDII RSS, the water quality monitoring for WSD21 pump station with respect to HK/2009/02 was switched over to the relocated location since 12 March 2014. According to the EM&A Manual, the water quality monitoring station WSD21 was relocated to station RW21-P789 and the water quality monitoring at station WSD21 was temporarily suspended since 12 March 2014.
  7. With respect to the switching over of cooling water intake location, the water quality monitoring at the relocated intake station RW21-P789 under HK/2009/02 was commenced since 29 July 2013 and monitoring station C5e and C5w were temporarily suspended and switched over to monitoring station RW21-P789 on 29 July 2013 due to suspension of pump house operation.
  8. With respect to the commencement of dredging works under HK/2012/08 and the installation of MTR precast protection unit, the enhanced water quality monitoring for Culvert L was temporarily suspended since 24 July 2013.
  9. With respect to the commencement of marine dredging works under contract HY/2010/08. The respective water quality monitoring station C7 were associated with HY/2009/15 and HY/2010/08.
  10. With respect to the commencement of marine dredging works under contract HK/2012/08/ The respective water quality monitoring station WSD19, P1, P3, P4, and P5 were associated with Contract HK/2012/08 Since September 2013.
  11. WQM events on 22 April 2013 at monitoring stations C2, C3, C4e and C4w were temporarily suspended. 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.
  12. 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.
  13. 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.
  14. RSS confirmed that all Type III Dredging works under HK/2009/01 have been completed since Oct 2012.
  15. Due to the presence of obstacle within the inner silt curtain frame at sampling point, water quality point at C7 was finely adjusted to the outside of the inner silt curtain frame since 29 Dec 2012.
  16. With respect to the trial dredging at WCR2 was scheduled on 20, 22, 24, 25 March and 1, 3 , 11, 13, 15, 17, 19, 20 Apr and 3 May 2012, on-going water quality monitoring results at WSD21 during this period was checked and indicated that there was no contribution due to the trial dredging operation. Enhanced review of water quality around WCR2 was also implemented and no deterioration in the water quality was observed.
  17. 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.
  18. 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 remain unchanged.
  19. 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. Water quality monitoring at WSD10 and WSD15 was temporary suspended while water quality monitoring at WSD9 and WSD17 was implemented with respect to HK/2009/02 from 8 Feb 12 onwards;
  20. 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 it was completed on 6 February 2012.
  21. Based on the safety concern when external fa蓷de 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 fa蓷de refurbishment work.
  22. 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.
  23. 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. No environmental complaint received in September reporting month.
  2. One environmental complaint received in October reporting month.

 

  1. A public complaint regarding construction noise impact referred by EPD was received by ET on 16 October 2014 (EPD Ref.: EP860/E2/24 Annex IV dated 16 October 2014). The complainant reported that construction noise like piling works was heard on 14 October 2014 night until 23:45 hrs. It was suspected that the noise was emanated from the work site next to new Wan Chai Ferry Pier and opposite to Wan Chai Sports Ground.

 

  1. According to the relevant site records under Contract HK/2009/02, from 19:00hrs to 23:00hrs on 14 October 2014, dredging works was conducted under Contractor of HK/2009/02 at WCR3 Area. Total one grab dredger was in operation. Mitigation measures including provision of steel sheeting screening to the power generation part of the grab dredger was implemented by the Contractor of HK/2009/02.

  1. From 23:00 hrs to 05:00 hrs, dredging works was conducted under Contractor of HK/2009/02 at WCR3 Area. Total one grab dredger was in operation. Mitigation measures including provision of steel sheeting screening to the power generation part of the grab dredger was implemented by the Contractor of HK/2009/02. From 23:00 hrs to 06:00hrs, panel replacement works was conducted under Contractor of HK/2009/02 at the Temporary Covered Walkway. Total one scissor platform and two hand held drills (battery) were in operation. From 23:00 hrs to 06:00hrs, trial pit works was conducted under Contractor of HK/2009/02 at Hung Hing Road. Total one crane lorry was in operation.

 

  1. In view of the above findings, no direct information associated with the noise concern was considered available.

 

  1. Three environmental complaints were received in November reporting month.

 

  1. A public complaint regarding to malodour referred by EPD was received by ET on 10 November 2014 (EPD Ref.: H05/RS/00027815-14). The complainant reported that malodour of construction plant exhaust from the construction site at old Wan Chai Ferry Pier was scented that affecting the swimmers at Wan Chai Swimming Pool on 7 November 2014.

 

  1. According to the relevant site records under Contract HK/2009/02, ELS works was conducted on 7 November 2014 during daytime at Portion 2 (Area opposite to Wan Chai Swimming Pool). Total 3 nos. of excavators, 2 nos. of crawler cranes, 2 nos. of generator, 1 no. of crane lorry and 2 no. of dump trucks were operated. Demolition works was conducted on 7 November 2014 during day time at West of old Wan Chai Ferry Pier. Total 2 nos. of excavators, 1 no. of derrick barge and 1 no. of tug boat were operated.

 

  1. Follow-up inspection was conducted during weekly environmental inspection on 13 November 2014, no dark smoke emission was observed from the PMEs operation on-site. The condition of chemical waste storage was considered satisfactory and no malodour was identified. Despite no information related to malodour was identified, the Contractor was reminded to conduct regular checking on the condition of PMEs to ensure only well maintained PMEs are used on site.

 

  1. A public complaint regarding to malodour and dark smoke referred by EPD was received by EP on 13 November 2014 (EPD Ref.: H05/RS/00028253-14). The complainant reported that malodour and dark smoke emission from an excavator located at the construction site at old Wan Chai Ferry Pier was observed that affect the pedestrians on 12 November 2014.

 

  1. According to the relevant site records under Contract HK/2009/02, demolition works was conducted on 12 November 2014 during daytime at old Wan Chai Ferry Pier. Total 2 nos. of excavators, 1 no. of derrick barge and 1 no. tug boat were operated.

 

  1. In addition, investigation found that due to malfunctioning of one of the excavators deployed at old Wan Chai Ferry Pier, dark smoke was emitted from the defective excavator for a short period of approximately 30 seconds at around 15:00 hrs on 12 November 2014. The operation of excavator was immediately suspended and followed by repair works. The normal operation of the excavator was resumed after repair.

 

  1. Follow-up inspection was conducted during weekly environmental inspection on 13 November 2014, no dark smoke emission was observed from the PMEs operating on-site and the Contractor of HK/2009/02 was reminded to conduct regular checking on the condition of PMEs to ensure only well maintained PMEs are used on site.

 

  1. A public complaint regarding to construction noise impact referred by EPD was received by ET via email on 21 November 2014 (EPD Ref: H08/RS/28263-14). Resident in Hing Fat Street complained about loud noise from dredging work in CBTS up to 10pm at night.

 

  1. EPD investigation found that the operation of a derrick barge is covered by CNP no. GW-RS0701-14. EPD reminded the Contractor of HY/2011/08 to ensure the work strictly follow the permit conditions and endeavour to minimize the noise as so not to disturb the nearby residents.

1. Introduction

1.1          Scope of the Report

1.1.1.     Lam Geotechnics Limited (LGL) has been appointed to work as the Environmental Team (ET) under Environmental Permit no. EP-356/2009 and Further Environmental permit nos. FEP-02/356/2009, FEP-03/356/2009, FEP-04/356/2009, FEP-05/356/2009, FEP-06/356/2009 and FEP-07/356/2009 to implement the Environmental Monitoring and Audit (EM&A) programme as stipulated in the EM&A Manual of the approved Environmental Impact Assessment (EIA) Report for Wan Chai Development phase II and Central-Wan Chai Bypass (Register No.: AEIAR-125/2008) and in the EM&A Manual of the approved EIA Report for Central-Wan Chai Bypass and Island Eastern Corridor Link (Register No. AEIAR-014/2001).

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

1.1.3.     This report documents the finding of EM&A works during the period from September 2014 to November 2014.

1.2          Structure of the Report

 

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

 

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

 

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

 

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

 

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

 

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

 

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

 

Section 8 Conclusion

2. Project Background

2.1          Background

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

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

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

 

2.2          Scope of the Project and Site Description

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

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

2.2.3.     The scope of the Project comprises:

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

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

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

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

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

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

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

 

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

Table 2.1 Schedule 2 Designated Projects under this Project

Item

Designated Project

EIAO Reference

Reason for inclusion

DP1

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

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

Trunk road and road tunnel more than 800 m in length

DP2

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

Schedule 2, Part I, A.1

Primary / district distributor roads

DP3

Reclamation works including associated dredging works

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

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

DP5

Wan Chai East Sewage Outfall

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

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

DP6

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

Schedule 2, Part I, C.12

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

 

 

2.3          Division of the Project Responsibility

2.3.1       Due to the multi-contract nature of the Project, the status of permits and/or licences under the individual contract(s) are presented as below:

Contract no. HK/2010/06 Wan Chai Development Phase II Central Wan Chai Bypass over MTR Tsuen Wan Line under FEP-05/356/2009

2.3.2       The construction works were completed and the FEP-05/356/2009 was surrendered by the Contractor on 3 October 2014.

Contract no. HY/2009/11 Wan Chai Development Phase II Central Wan Chai Bypass - North Point Reclamation

2.3.1.     The construction works were completed and the FEP-01/356/2009 was surrendered by the Contractor on 22 October 2012.

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

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

Table 2.2 Details of Individual Contracts under the Project

Contract No.

Contract Title

Associated DP(s)

Construction Commencement Date

HK/2009/01

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

DP3, DP6

23 July 2010

DP1, DP2

25 August 2011

HK/2009/02

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

DP3, DP5

5 July 2010

DP1

26 April 2011

HY/2009/11

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

DP3

17 March 2010

(Completed)

HY/2009/15

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

DP3

10 November 2010

DP1

13 July 2011

HK/2010/06

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

DP3

22 March 2011

04/HY/2006

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

DP1

September 2010

(Completed)

HY/2009/17

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

DP1

5 October 2010

(Completed)

HY/2009/18

Central - Wan Chai Bypass (CWB) Central Interchange

DP1

10 March 2014

HY/2009/19

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

DP1

24 March 2011

HK/2012/08

Wan Chai Development Phase II Central-

Wan Chai Bypass at Wan Chai

West

DP1,DP2, DP3

5 March 2013

HY/2011/08

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

DP1

8 October 2014

2.4          Project Organization and Contact Personnel

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

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

Table 2.3 Contact Details of Key Personnel

Party

Role

Post

Name

Contact No.

Contact Fax

AECOM

Engineers Representative for WDII

Principal Resident Engineer

Mr. Frankie Fan

2587 1778

2587 1877

Engineers Representative for CWB

Principal Resident Engineer

Mr. Peter Poon

3912 3388

3912 3010

Chun Wo Leader Joint Venture

Contractor under Contract no. HK/2009/01

Joint Venture Board Representative

Mr. Simon Liu

9304 8355

2587 1878

Deputy 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

Senior Environmental Engineer

Ms. Wendy Ng

9803 0057

Assistant Environmental Engineer

Miss. Connie Chan

6157 7057

Chun Wo CRGL Joint Venture

Contractor under Contract no. HK/2009/02

Project Manager

Mr. Alfred Leung

3658-3022

2827 9996

Quality & Environmental Manager

Mr. C.P. Ho

9191 8856

China State Construction Engineering (HK) Ltd.

Contractor under Contract no. HY/2009/15

Project Director

K C Cheung

3557 6399

2566 2192

 

Site Manager

J H Chen

3557 6368

 

 

Contractors Representative

Andrew Wong

3557 6358

 

 

Contractors Representative

Gene Cheung

3557 6395

 

 

Senior Project Manager

Eddie Tang

35576452

Environmental Officer

Mr. Daniel Sin

3557 6347

Gammon

-Leader JV

 

 

Contractor under Contract no. HK/2010/06

 

 

Project Manager

Mr. Paul Lui

9095 7922

2529 2880

 

 

 

Site Agent

Mr. Eric Yip

2529 2068

Environmental Officer

Clement Pang

9735 9200

Environmental Supervisor

Jacky Cheung

9779 2292

Chun Wo - CRGL - MBEC Joint Venture

 

Contractor under Contract no. HY/2009/19

 

Project Manager

Mr. Rayland Lee

3758 8879

2570 8013

Site Agent

Mr. Eric Yip

252902068

Environmental Engineer

Mr. Calvin Leung

9286 9208

Environmental Manager /

Environmental Officer

Mr. M.H. Isa

9884 0810

Construction Manager (Marine)

William Luk

9610 1101

Construction Manager

(Land)

Patrick Cheung

9643 3012

Construction Manager

(Land)

Eric Fong

6191 9337

Operation Manager (Land)

Yung Kwok Wah

9834 1010

China State-

Leader JV

Contractor

under Contract

no. HK/2012/08

Project Director

Andrew Tse

9137 1811

2877 1522

Project Manager

Victor Wu

9193 8871

 

Deputy Project Manager

George Cheung

9268 1918

 

Site Agent

Paul Lui

9095 7922

 

Environmental Officer

James Ma

9130 9549

 

Environmental Supervisor

Ching Man, Chan

6050 4919

 

China State

 

Contractor

under Contract

no. HY/2010/08

Project Director

Cheung Kit Cheung

3557 6399

2566 8061

 

 

 

Project Manager

Chan Ying Lun

3418 3001

 

 

 

Deputy Project Manager

Chris Leung

3467 4299

 

 

 

Site Agent

Dave Chan

3467 4277

 

 

 

Environmental Officer

C.M. Wong

3557 6464

 

 

 

Environmental Supervisor

Desmond Ho Tsz Ho

3557 6466

 

ENVIRON Hong Kong Limited

Independent Environmental Checker (IEC)

Independent Environmental Checker (IEC)

Mr. David Yeung

34652888

34652899

Lam Geotechnics Limited

Environmental Team (ET)

Environmental Team Leader (ETL)

Mr. Raymond Dai

2882 3939

2882 3331

 

2.5          Principal Work and Activities

2.5.1.     During this reporting period, the principal work activities for Contract no. HK/2009/01 are summarized in Table 2.4.

Table 2.4 Principal Work Activities for Contract no. HK/2009/01

September 2014

October 2014

November 2014

Ÿ   Rock trimming works

Ÿ   Rock trimming works

Ÿ    Rock trimming works

 

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

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

September 2014

October 2014

November 2014

Ÿ   Works of covered walkway

Ÿ   ABWF works at section VIIIA

Ÿ   HHR Flyover Diversion at Stage 2

Ÿ   Demolition of Existing Wan Chai Ferry Pier

Ÿ   Works of covered walkway

Ÿ   Drainage work

Ÿ   ABWF work

Ÿ   Demolition of HHR Flyover Approach Ramp

Ÿ   Demolition of Existing Wan Chai Ferry Pier

Ÿ   Dredging and Reclamation at WCR3

Ÿ   Works of covered walkway

Ÿ   Drainage work

Ÿ   ABWF work

Ÿ   Demolition of Existing Wan Chai Ferry Pier

Ÿ   Dredging and Reclamation at WCR3

 

2.5.3.     Major construction activities for Contract no. HY/2009/15 was commenced on 10 November 2010. During this reporting period, the principal work activities for Contract no. HY/2009/15 are summarized as below:

 

 

Table 2.6 Principal Work Activities for Contract no. HY/2009/15

September 2014

October 2014

November 2014

          Construction works of East Ventilation Shaft

          Removal of temporary reclamation and seawall blocks at TPCWAE & TS4

          Demolition of D-Wall at TS2, TPCWAE & TS4

          Construction works of East Ventilation Shaft

          Removal of temporary reclamation, D-Wall and seawall blocks at TPCWAE & TS4

          Maintenance dredging

            Removal of temporary reclamation, D-wall and seawall blocks at TPCWAE & TS4

          Temporary reclamation works and installation of seawall blocks at TPCWAW

          Maintenance dredging

 

2.5.4.     Contract no. HK/2010/06 was commenced on 22 March 2011. During this reporting period, the principal work activities for Contract no. HK/2010/06 are summarized as below:

Table 2.7 Principal Work Activities for Contract no. HK/2010/06

September 2014

October 2014

Ÿ   Nil

 

Ÿ   Nil

 

 

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

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

September 2014

October 2014

November 2014

Ÿ  Construction of Dolphin Cap

Ÿ  Construction of Dolphin Cap

Ÿ   Construction of Dolphin Cap

 

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

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

September 2014

October 2014

November 2014

Ÿ   ELS for box culvert La at Lung King Street

Ÿ   Installation of caisson seawall

Ÿ   Removal of rock armour

Ÿ   Filling

Ÿ   Sheet piling

Ÿ   ELS for box culvert L at Lung King Street

Ÿ   Removal of rock armour

Ÿ   Placing of rockfill

Ÿ   Sheet piling

Ÿ   Excavation of Dry Dock and disposal of soil

 

Ÿ   ELS for box culvert L at Lung King Street

Ÿ   Removal of rock armour

Ÿ   Dry dock construction

Ÿ   Installation of caisson seawall

 

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

 

 

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

September 2014

October 2014

November 2014

Ÿ   Rock filling works

Ÿ   Dredging works

Ÿ   Seawall blocks installation

Ÿ   Sheet pilling works at outfall Q

Ÿ   Installation of water tank

 

Ÿ   Rock filling works

Ÿ   Dredging works

Ÿ   Seawall blocks installation

Ÿ   Sheet piling works at Outfall Q

Ÿ   Seawater intake diversion works

Ÿ   Installation of water tank

Ÿ   Rock filling works

Ÿ   Dredging works

Ÿ   Seawall blocks installation

Ÿ   Sheet piling works, welding & struts installation works at Outfall Q

Ÿ   Seawater intake diversion works

Ÿ   Installation of water tank

 

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

3. Monitoring Requirements

3.1.          Noise Monitoring

Noise Monitoring Stations

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

Table 3.1 Noise Monitoring Stations

Station

Description

M1a

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

 

Real time Noise Monitoring Stations

3.1.2.     The real-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.

3.1.3.     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.

3.1.4.     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 RTN1 - FEHD Hong Kong Transport Section Whitfield Depot was excluded under EP-356/2009 since 28 November 2012.

Table 3.2 Real Time Noise Monitoring Station

District

Station

Description

North Point

RTN2

Oil Street Community Liaison Centre

North Point

RTN2a

Electric Centre

l   Real time noise monitoring results and graphical presentation during night time period are for information only.

l   RTN2 had been relocated to RTN2a since 5 Oct 2012

 

 

 

Noise Monitoring Parameters, Frequency and Duration

3.1.5.     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.

3.1.6.     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.

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

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

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

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

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

 

Monitoring Equipment

3.1.9.     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.

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

 

 

3.2.                Air Monitoring

Air Quality Monitoring Stations

3.2.1.     The air monitoring stations for the Project are listed and shown in Table 3.3 and Figure 3.1. Appendix 3.1 shows the established Action/Limit Levels for the monitoring works.

Table 3.3 Air Monitoring Stations

Station ID

Monitoring Location

Description

CMA1b

Oil Street Community Liaison Centre

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

CMA5a

Children Playgrounds opposite to Pedestrian Plaza

Wan Chai

CMA6a

WDII PRE Site Office *

Wan Chai

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

Air Monitoring Parameters, Frequency and Duration

3.2.2.     One-hour and 24-hour TSP levels should be measured to indicate the impacts of construction dust on air quality. The 24-hour TSP levels shall be measured by following the standard high volume sampling method as set out in the Title 40 of the Code of Federal Regulations, Chapter 1 (Part 50), Appendix B.

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

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

Sampling Procedure and Monitoring Equipment

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

          0.6 - 1.7 m3 per minute adjustable flow range;

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

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

          capable of providing a minimum exposed area of 406 cm2;

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

          equipped with a shelter to protect the filter and sampler;

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

          equipped with a flow recorder for continuous monitoring;

          provided with a peaked roof inlet;

          incorporated with a manometer;

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

          easily changeable filter; and

          capable of operating continuously for a 24-hour period.

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

Laboratory Measurement / Analysis

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

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

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

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

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

impact monitoring for odour patrol

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

        be at least 16 years of age;

        be free from any respiratory illnesses; and

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

        before and during odour patrol

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

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

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

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

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

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

            3 - Strong Identifiable, likely to have odour nuisance;

            4 - Extreme Severe odour, and unacceptable odour level.

 

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

3.3    Water Quality Monitoring

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

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

 

 

Water Quality Monitoring Stations

3.3.3.     It is proposed to monitor the water quality at 2 WSD salt water intakes and 8 cooling water intakes along the seafront of the Victoria Harbour. The proposed water quality monitoring stations of the Project are shown in Table 3.4 and Figure 3.1. Appendix 3.1 shows the established Action/Limit Levels for the monitoring works.

Table 3.4 Marine Water Quality Stations for Water Quality Monitoring

Station Ref.

Location

Easting

Northing

WSD Salt Water Intake

WSD19

Sheung Wan

833415.0

816771.0

Cooling Water Intake

C1

HKCEC Extension

835885.6

816223.0

C7

Windsor House

837193.7

816150.0

P1

HKCEC Phase I

835774.7

816179.4

P3

The Academy of performing Arts

835824.6

816212.0

P4

Shui on Centre

835865.6

816220.0

P5

Government Buildings

(Wanchai Tower / Revenue Tower / Immigration Tower)

835895.2

816215.2

Cooling Water Intake / WSD Salt Water Intake

RW21-P789

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

836268.0

816020.0

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

-    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, 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 were temporarily suspended from 27 Apr 2012

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

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

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

-    Maintenance responsibility of silt screen C1, WSD19, P3, P4 and P5 are under Contract HK/2009/01.

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

-    Water quality monitoring for Windsor House Cooling (Station Ref: C7) was temporarily suspended since 22 October 2014 with respect to the diversion scheme.

 

 

Water Quality Parameters and frequency

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

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

3.3.6.     The interval between two sets of monitoring should not be less than 36 hours except where there are exceedances of Action and/or Limit Levels, in which case the monitoring frequency will be increased. Table 3.5 shows the proposed monitoring frequency and water quality parameters. Duplicate in-situ measurements and water sampling should be carried out in each sampling event. For selection of tides for in-situ measurement and water sampling, tidal range of individual flood and ebb tides should be not less than 0.5m.

Table 3.5 Marine Water Quality Monitoring Frequency and Parameters

Activities

Monitoring Frequency1

Parameters2

During the 4-week baseline monitoring period

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

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

During marine construction works

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

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

After completion of marine construction works

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

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

Notes:

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

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

 

Dissolved Oxygen and Temperature Measuring Equipment

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

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

          a temperature of 0-45 degree Celsius

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

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

Turbidity Measurement Instrument

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

Sampler

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

Sample Container and Storage

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

Water Depth Detector

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

Salinity

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

Monitoring Position Equipment

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

Calibration of In-situ Instruments

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

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

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

 

Laboratory Measurement / Analysis

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

 

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

Working Area and the Causeway Bay Typhoon Shelter

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

3.3.21    Dissolved oxygen monitoring at the intakes C6 and C7 in Causeway Bay Typhoon Shelter when there is temporary reclamation in Causeway Bay Typhoon Shelter and at the south-western and south-eastern corners of the ex-Wan Chai Public Cargo Working Area. The proposed water quality monitoring stations of the Project are shown in Table 3.6 and Figure 3.1.

Table 3.6 Marine Water Quality Stations for Enhanced Water Quality Monitoring

Station

Location

C6

Excelsior Hotel

C7

Windsor House

Ex-WPCWA-SW

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

Ex-WPCWA-SE

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

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

 

 

 

 

Daily SS Monitoring and 24 hours Turbidity Monitoring System

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

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

Additional Dissovled oxygen Monitoring FOR CULVERT L WATER DISCHARGE FLOW

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

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

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

4. Monitoring Results

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

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

  4.1.       Noise Monitoring Results

Contract no. HK/2009/01 - Wan Chai Development Phase II Central Wanchai Bypass at HKCEC and Contract no. HK/2009/02 - Wan Chai Development Phase II Central Wan Chai Bypass at WanChai East and Contract no. HK/2010/06 Wan Chai Development Phase II Central-Wan Chai Bypass over MTR Tsuen Wan Line

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

Table 4.1 Noise Monitoring Station for Contract nos. HK/2009/01 and HK/2009/02