Contract No: HK/2009/05

 

Wanchai Development Phase II and Central Wanchai Bypass

Sampling, Field Measurement and Testing Work (Stage 1)

 

Environmental Permit no. EP-356/2009,

Further Evironmental permit nos. fep-01/356/2009, fep-02/356/2009, FEP-03/356/2009 and Fep-04/356/2009

 

Quarterly Environmental Monitoring
and Audit Report

 

- december 2010  February 2011 -

 

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:

 

 

29 March 2011


Table of contents

 

EXECUTIVE SUMMARY. 3

1.   Introduction. 9

1.1    Scope of the Report 9

1.2    Structure of the Report 9

2.   Project Background. 10

2.1    Background. 10

2.2    Scope of the Project and Site Description. 10

2.3    Division of the Project Responsibility. 11

2.4    Project Organization and Contact Personnel 12

2.5    Principle Work and Activities. 14

3.   Monitoring Requirements. 19

3.1.    Noise Monitoring. 19

3.2.    Air Monitoring. 20

3.3.    Water Quality Monitoring. 21

4.   Monitoring Results. 24

4.1.    Noise Monitoring Results. 24

4.2.    Real Time Noise Monitoring Results. 25

4.3.    Air Monitoring Results. 25

4.4.    Water Monitoring Results. 27

4.5.    Waste Monitoring Results. 30

5.   Compliance Audit. 34

5.1.    Noise Monitoring. 34

5.2.    Real-time Noise Monitoring. 34

5.3.    Air Monitoring. 34

5.4.    Water Quality Monitoring. 34

5.5.    Site Audit 36

5.6.    Review of the Reasons for and the Implications of Non-compliance. 36

5.7.    Summary of action taken in the event of and follow-up on non-compliance. 36

6.   Complaints, Notification of Summons and Prosecution. 37

7.   Cumulative Construction Impact due to the Concurrent Projects. 39

8.   Conclusion. 40


lIST OF TABLES

 

Table I        Principle Work Activities for Contract no. HY/2009/11

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

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

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

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      Principle Work Activities for Contract no. HY/2009/11

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

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

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

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 Stations for Contract no. HY/2009/11

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

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

Table 4.4     Real Time Noise Monitoring Station for Contract no. HY/2009/11

Table 4.5     Air Monitoring Stations for Contract no. HY/2009/11

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     Water Monitoring Stations for Contract no. HY/2009/11

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. HY/2009/15

Table 4.13     Summary of Water Quality Monitoring Exceedances in Reporting Quarter

Table 4.14    Details of Waste Disposal for Contract no. HY/2009/11

Table 4.15    Details of Waste Disposal for Contract no. HK/2009/01

Table 4.15a    Details of Non-inert C&D Material Recycled for Contract no. HK/2009/01

Table 4.16    Details of Waste Disposal for Contract no. HK/2009/02

Table 4.17    Details of Waste Disposal for Contract no. HY/2009/15

Table 5.1     Summary of Water Quality Exceedances in the Reporting Quarter

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 8.1   Construction Programme of Individual Contracts

EXECUTIVE SUMMARY

  1. This is the Quarterly Environmental Monitoring and Audit (EM&A) Report  /span> December 2010 to February 2011 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-01/356/2009, FEP-02/356/2009, FEP-03/356/2009 and FEP-04/356/2009. This report presents the environmental monitoring and audit findings and information during the period from 28th November 2010 to 27th February 2011. The cut-off date of reporting is at 27th of each reporting quarter.

 

Construction Activities for the Reported Period

  1. During this reporting period, the principle work activities for Contract no. HY/2009/11 are summarized as below:

Table I     Principle Work Activities for Contract no. HY/2009/11

December 2010

January 2011

February 2011

Ÿ      Dredging works;

Ÿ      Reclamation works;

Ÿ      Construction & installation of seawall block;

Ÿ      Floating out of caisson seawall;

Ÿ      Construction & installation of seawall block;

Ÿ      Construction of coping;

Ÿ      Pre-casting the caisson seawall (off-site);

Ÿ      Delivery of caisson seawall;

Ÿ      Drainage construction works;

Ÿ      Installation of caisson Seawall; and

Ÿ      Temporary Protection and Precautionary Measures to Existing Island Eastern Corridor Structure

Ÿ     Dredging works;

Ÿ     Reclamation works;

Ÿ     Construction & installation of seawall block;

Ÿ     Floating out of caisson seawall;

Ÿ     Construction & installation of seawall block;

Ÿ     Construction of coping;

Ÿ     Delivery of caisson seawall,

Ÿ     Drainage construction works and

Ÿ     Installation of caisson Seawall.

Ÿ     Dredging works;

Ÿ     Reclamation works;

Ÿ     Construction & installation of Seawall Block;

Ÿ     Drainage Construction works; and

Ÿ     Construction of coping

 

 

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

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

December 2010

January 2011

February 2011

Ÿ      Dredging woks had been completed about 46% for the open cut trench of cross harbour water mains;

Ÿ      Manufacturing of Taper-lok flange joint;

Ÿ      Trial pits for determination of connection location at both Wan Chai and Tsui Sha Tsui areas;

Ÿ      Routine maintenance and clearance works for silt screens;

Ÿ      Trial pits for determination of connection location at both Wan Chai and Tsim Sha Tsui areas;

Ÿ      Due to construction of SCL works, preparation works for temporary diversion of Convention Plaza discharge mains area;

Ÿ      6 pipe piles of P1 Wall had been installed; and

Ÿ      Fabrication of conveyor belt system for filling works at HKCEC water channel reclamation;

 

Ÿ      Dredging works for the open cut trench of cross harbour water mains;

Ÿ      Casting of concrete surround to submarine pipelines;

Ÿ      Concrete surrounded submarine pipeline were transported to fabrication yard for field jointing.;

Ÿ      Routine maintenance and clearance works for silt screens;

Ÿ      Trial pits for determination of connection location for HKAPA, Great Eagle Centre / Harbour Centre at Wan Chai areas;

Ÿ      Preparation works for temporary diversion of Convention Avenue discharge mains Due to construction of SCL works;

Ÿ      Erection of temporary staging platform was commenced;

Ÿ      Installation of pipe pile PQ4 down to -40mPD was completed;

Ÿ      The fabrication of extra 3 nos. of mud barges; and

Ÿ      Dredging at HKCEC water channel.

 

Ÿ      Casting of concrete surround to submarine pipelines;

Ÿ      Field jointing for steel pipes for surround pipelines at precast yard;

Ÿ      Joint initial survey at MTR Tsuen Wan Line tunnel (Wan Chai Side);.

Ÿ      Trim dredging for cross harbour water mains pipe trench (CHA970 - 1150);

Ÿ      Final joint hydrograph survey checking for cross harbour water mains pipe trench (Pipe line A1 to A10);

Ÿ      Removal of rock fill material and pipe trench excavation at west side sloping seawall of HKCEC extension;

Ÿ      Silt screen routine maintenance for the existing cooling water intake;

Ÿ      Installation of cooling main pipelines at HKCEC West Wing (Zone B1-2);

Ÿ      Preparation and excavation for pipe laying works at HKCEC Area (Zone B1-5);

Ÿ      Preparation and excavation for pipe laying works at Convention Avenue (Zone A4-1);

Ÿ      Construction for temporary diversion of Convention Plaza discharge mains at Convention Avenue (Zone A1-1);

Ÿ      Pump Station Nos. 1, 3, 4 & 5 were approved for stage 1 and all coring s under diameter 350 mm;

Ÿ      Preparation work for E&M first fixing at high level of Pump Station No. 1, 3, 4 & 5;

Ÿ      Dredging work up to CH 160 at HKCEC water channel;

Ÿ      Fabrication of floating pontoon for conveyor belt;

Ÿ      Installation of pipe piles P1 Wall;

Ÿ      Reclamation works at HKCEC; and

Ÿ      Preparation and excavation for pipe laying works at Convention Avenue (both Zone A5-1 and A2-2)

 

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

 

 

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

December 2010

January 2011

February 2011

Ÿ      Site clearance; nbsp;        

Ÿ      Dredging in West temporary seawall construction in Area WCR1;

Ÿ      Rock Filling and Reclamation in Area WCR1;

Ÿ      Casting, delivery and installation of precast caisson seawalls, pumping stations and seawall blocks;

Ÿ      Permanent seawall construction;

Ÿ      Drainage diversion of existing 1800mm dia. pipe for WCR1 reclamation;

Ÿ      Road improvement at Junction of Fleming Road and Gloucester Road;

Ÿ      Road modification at Expo Drive East;

Ÿ      Construction of new public toilet and helipad terminal building at Expo Drive East;

Ÿ      Fabrication and delivery of HDPE pipe for submarine outfall;

Ÿ      Installation of ‘Z section of submarine outfall underneath the seawall;

Ÿ      Laying of cooling water mains;

Ÿ      Pre-bored H-piling at proposed WSD Salt Water Pumping Station;

Ÿ      Seawall construction near Expo Drive East;

Ÿ      Tree transplanting;

Ÿ      Establishing public fill sorting facility at TKO;

Ÿ      Testing with trial run of public fill sorting facility at TKO;

Ÿ      Trench excavation for construction of Salt Water Intake Culvert at Wan Shing Street;

Ÿ      Piling at new Wan Chai Ferry Pier;

Ÿ      Installation of building services for public toilet; and

Ÿ      Construction of precast units of Box Culvert N1, Salt Water Intake Culvert, Drain FRP-N and Cooling Water Discharge Pipe in Area WCR1.

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

Ÿ      Maintenance dredging works at TCBR4 and TCBR1E for mooring and anchorage rearrangement;

Ÿ      Dredging works at TPCWAE and TCBR1E for seawall;

Ÿ      Marine Site Investigation at TPCBR1E and TPCWAE;

Ÿ      Demolition of Ex-Fireboat Station; and

Ÿ      Erection of the CSHK’s Site Office

Ÿ      Site clearance;

Ÿ      Dredging in West temporary seawall construction in Area WCR1;

Ÿ      Rock Filling and Reclamation in Area WCR1;

Ÿ      Permanent seawall construction;

Ÿ      Drainage diversion of existing 1800mm dia. pipe for WCR1 reclamation;

Ÿ      Construction of new public toilet and helipad terminal building at Expo Drive East;

Ÿ      Seawall construction near Expo Drive East;

Ÿ      Tree transplanting;

Ÿ      Piling at new Wan Chai Ferry Pier;

Ÿ      Operation of Public Fill Sorting Facility at TKO 137;

Ÿ      Installation of building services for public toilet;

Ÿ      Construction of precast units of Box Culvert N1, Salt Water Intake Culvert, Drain FRP-N and Cooling Water Discharge Pipe in Area WCR1;

Ÿ      Installation of Cooling Main at China Resources Building;

Ÿ      Driven temporary sheetpiles, erect temporary shoring and excavation at China Resources Building, Great Eagle Centre/Harbour Centre;

Ÿ      Break or remove existing footpath for cooling main work at Great Eagle Centre and Harbour Centre;

Ÿ      Pile road test at WSD Salt Water Pumping Station;

Ÿ      Sheetpiles & Cantilever decking (Left Lane) at Wan Shing Street;

Ÿ      Dredging for Submarine outfall;

Ÿ      Outfall pipe installation for submarine sewage outfall; and

Ÿ      Excavation for WSD Salt Water Pumping Station

 

Ÿ      Construction of wall and roof floor slab for new public toilet at Expo Drive East was completed on 1 February 2011.

Ÿ      Construction of basement for new passenger terminal building was ongoing.

Ÿ      Partial demolition of existing ferry pier at Expo Drive East;

Ÿ      Preparation works for seawall modification at Expo Drive East ;

Ÿ      Excavation at Harbour Road and Harbour Centre for cooling mains;

Ÿ      Approximate 24m pipe was laid at Harbour Road;

Ÿ      Breaking DSD’s boundary wall;

Ÿ      Driving remaining sheet-piles for excavation and lateral support at WSD Salt Water

Ÿ      Pumping Station;

Ÿ      Excavation for construction of WSD Salt Water Pumping Station;

Ÿ      Driving sheet-piles at Wan Shing Street for WSD Intake Culvert;

Ÿ      Pre-bored sheet-pile for WSD Salt Water Intake Culvert;

Ÿ      Dredging for submarine outfall pipe;

Ÿ      Reclamation at WCR1 area;

Ÿ      Compaction for reclaimed land;

Ÿ      Strengthening for Western Temporary Seawall;

Ÿ      Pre-drilling of bored pile for tunnel structure;

Ÿ      Bored-pile works;

Ÿ      Guide wall for diaphragm wall construction;

Ÿ      1800 diameter drainage diversion; and

Ÿ      Road work for traffic diversion within pet garden

 

 

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

 

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

December 2010

January 2011

February 2011

Ÿ      Maintenance dredging works at TCBR4 and TCBR1E for mooring and anchorage rearrangement;

Ÿ      Dredging works at TPCWAE and TCBR1E for seawall;

Ÿ      Marine Site Investigation at TPCBR1E and TPCWAE;

Ÿ      Demolition of Ex-Fireboat Station; and

Ÿ      Erection of the CSHK’s Site Office

Ÿ      Dredging works at TCBR1W and TPCWAW;

Ÿ      Dredging works at TPCWAE and TCBR1E for seawall;

Ÿ      Type 3 sediments disposal; and

Ÿ      Ground investigation works

 

 

Ÿ      Rock removal at TS4 and TPCWA;

Ÿ      Disposal of Type 3 sediment;

Ÿ      Rock-filling at TS1, seawall block construction at TPCWA; and

Ÿ      Ground investigation and trial pit excavation

 

 

  1. No construction work was undertaken under Contract no.HK/2010/06 during this reporting period.

 

Noise Monitoring

  1. Noise monitoring during day time and evening time were conducted at the M1a, M2b, M3a, M4b and M5b on a weekly basis in the reporting quarter. The limit level exceedances recorded in the reporting quarter are listed below. Investigation found that exceedances were not related to the Project. Investigation found that exceedances were not related to the Project.

Ÿ             Seven limit level exceedances at M1a on 6, 14 and 25 December 2010, 4 and 12 January, 17 and 22 February 2011 during the evening time period; and

Ÿ             One action level exceedance was recorded due to the noise complaint regarding the noise nuisance arising from the 2 barges for filling operation near City Garden at 22:00 on 6 December 2010.

 

Real-time Noise Monitoring

  1. 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.

 

  1. Continuous limit level exceedances were recorded at FEHD Depot from 2025hrs to 2115 hrs on 21 December 2010 and from 2300hrs to 2325 hrs on 23 December 2010. Besides, the frequent limit level exceedances were recorded at Oil Street Community Centre from 19:46 to 21:21 on 7 December 2010. It was checked that there was no construction work near the FEHD station on 21 and 23 December 2010 and only maintenance works was conducted on 7 December 2010. It was anticipated that the noise exceedances were contributed from traffic along Island Eastern Corridor.

 

  1. Continuous Limit Level exceedances were recorded on 4 February 2011 evening time due to the shooting off the Lunar New Year Fireworks. It was concluded as non-project related exceedances

 

Air Quality Monitoring

  1. 1hr and 24hr TSP monitoring were conducted at CMA1b, CMA2a and CMA4a in the reporting quarter. No exceedance was recorded during the reporting quarter.

 

Water Quality Monitoring

  1. Water quality monitoring was conducted at 19 monitoring stations namely WSD7, WSD9, WSD10, WSD15, WSD17, WSD19, WSD20, WSD 21, C1, C2, C3, C4e, C4w, C5e, C5w, C6, C7, C8 and C9 during the reporting period. The water quality monitoring at C6 and C7 were commenced on 9 November 2010.

 

  1. Total 25 exceedances of Turbidity and 34 exceedances of SS were recorded during mid-flood while 4 exceedances of Turbidity and 18 exceedances of SS were recorded during mid-ebb in the reporting period. Investigations were found that the most of exceedances are not related to the Project works except the SS and turbidity exceedances at C8 on 16 and 30 December 2010 at mid-flood tide, C6 on 7 February 2011 at mid-flood and mid-ebb tides and turbidity exceedances recorded at C5e, C5w and WSD21 on 11 February 2011 at mid-flood. The details of the recorded excedances can be referred to the Section 5.4.

 

Complaints, Notifications of Summons and Successful Prosecutions

  1. There were two environmental complaints were received on 3 and 6 December 2010 in this reporting period. The complaint received on 3 December 2010 was regarding to the bad odour generated from the dredging plant off North Point. The noise nuisance and visual impact was complained on 6 December 2010 that was arisen from the 2 barges and spot light pointing directly to the complainant flat. No further complaint was received after investigation on 8 December 2010 and follow-up action taken by the Contractor for contract no. HY/2009/11.

 

  1. Incidents of split bottom hopper barge named Shun Tat 11 (Licence no. B21623V) were recorded near Kwai Shek (200-300m distance) under Contract no. HY/2009/15 on 17 December 2010 and at the location near Cross Harbour Water Mains marine work zone under Contract no. HK/2009/01 on 24 January 2011.

 

  1. The hopper barge under Contract no. HY/2009/15 was trapped by a strong current and grounded on shallow rock clusters on 17 December 2010. Jettison of marine sediment (Type 1  Open Sea Disposal (Dedicate Sites) & Type 2   Confined Marine Disposal) in hopper barge at the scene of incident was needed in order to avoid capsizing of vessel. Contractor informed this incident to EPD on 18 December 2010.

 

  1. The ballast tank on the port side of the split hopper barge under Contract no. HK/2009/01was flooded with water on 24 January 2011. It was towed back to the dredging zone within a short period and immediately opened its hopper to dump the sediment back to the same dredging trench. It is suspected that the hull on the port side might be broken causing ingress of seawater into the ballast tanks. Meanwhile, the barge has been demobilized from the site and currently anchored at To Kwa Wan Typhoon Shelter. The emergency dumping was notified to EPD on 24 January 2011 at 10:00a.m. This barge will not be deployed to the site under HK/2009/01 to dispose the dredged sediment until it has been repaired and inspected by the competent surveyor. These incidents will be kept in view for determining further follow up and remedial measures. All Contractors under EP-356/2009 were reminded to ensure the deployed hopper barge has been adequately checked by qualified person and ensured in good condition before the engagement on site.

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-01/356/2009, FEP-02/356/2009, FEP-03/356/2009 and FEP-04/356/2009 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  /span>Environmental Monitoring and Audit Requirements /span> under Particular Specification Section 27.

1.1.3.        This report documents the finding of EM&A works during the period from 28th December 2010 to 27th February 2011.

1.2               Structure of the Report

 

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

 

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

 

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

 

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

 

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

 

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

 

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

 

Section 8     Conclusion

2.     Project Background

2.1               Background

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

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

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

 

2.2               Scope of the Project and Site Description

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

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

2.2.3.        The scope of the Project comprises:

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

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

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

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

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

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

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

 

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

Table 2.1   Schedule 2 Designated Projects under this Project

Item

Designated Project

EIAO Reference

Reason for inclusion

DP1

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

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

Trunk road and road tunnel more than 800 m in length

DP2

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

Schedule 2, Part I, A.1

Primary / district distributor roads

DP3

Reclamation works including associated dredging works

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

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

DP5

Wan Chai East Sewage Outfall

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

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

DP6

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

Schedule 2, Part I, C.12

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

 

 

2.3               Division of the Project Responsibility

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

2.3.2.        In the reporting period, Contract no. HY/2009/15 - Central-Wanchai Bypass  Tunnel (Causeway Bay Typhoon Shelter Section) under the Project was commenced on 10 November 2010. 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

Pending

HK/2009/02

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

DP3, DP5

5 July 2010

DP1

Pending

HY/2009/11

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

DP3

17 March 2010

HY/2009/15

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

DP3

10 November 2010

HK/2010/06

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

DP3

Anticipated on

22 March 2011

 

2.3.3.        Contract no. HK/2010/06  Wan Chai Development Phase II-Central-Wan Chai Bypass over MTR Tsuen Wan Line was commenced on 20 January 2011. No construction works were undertaken in the reporting period. The tentative commencement of construction is anticipated on 22 March 2011.

 

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

Engineer for WDII

Principle Resident Engineer

Mr. Frankie Fan

2587 1778

2587 1877

Engineer for CWB

Principle Resident Engineer

Mr. Peter Poon

3916 1818

3529 2829

China Harbour- CRBC Joint Venture

Contractor under Contract no. HY/2009/11

Project Director

Mr. Cho Yu Fun

3157 1086

3157 1085

Project Manager

Mr. Gregory Wong

3157 1086

Site Agent

Mr. Daniel Cheung

3157 1086

Environmental Officer

Mr. C. M. Wong

3157 1086

Chun Wo  Leader Joint Venture

Contractor under Contract no. HK/2009/01

Site Agent

Mr. Paul Yu

9456 9819

2634 1626

Operation Manager

Lau Yee Ching

9466 3918

Construction Manager

David Wong

9653 8635

Construction Manager

Wilson Lau

5183 1270

Construction Manager

Chan Mui Sang

9864 8615

Environmental Officer (Compliance Manager)

Brian Wan

9312 2827

Environmental Engineer

Shelton Chan

5395 5470

Chun Wo  CRGL Joint Venture

Contractor under Contract no. HK/2009/02

Project Manager

Mr. Chan Sing Cho

3658 3002

2827 9996

Site Agent

Mr. Eric Lam

3658-3048

Environmental Officer (Compliance Manager)

Mr. Barry Leung

3658 3031

Environmental Engineer

Ms. Flora Ng

3658-3064

China State Construction Engineering (HK) Ltd.

Contractor under Contract no. HY/2009/15

Project Manager

Mr. M Y Wong

2823 7879

2528 5651

Site Agent

Mr. K Y Leung

9026 8808

2566 2192

 

 

Construction Manager

Mr. C K Kwok

9779 2162

 

 

 

Assistant Construction Manager (East)

Mr. Gene Cheung

6105 4880

 

 

 

Assistant Construction Manager (West)

Mr. Tony Chiu

9090 0606

 

 

 

Section Agent (East)

Mr. Jason Chan

9254 1635

 

 

 

Section Agent (West)

Mr. Tang Ka Tung

9473 4771

 

 

 

Environmental Manager

Ms. Anna Yu

9473 1945

 

Gammon

-Leader JV

Contractor under Contract no. HK/2010/06

Manager

Mr. Simon Tong

9124 2471

2529 2880

Site Agent

Mr. Book Kin Man

9193 8680

Environmental Officer

Mr. Lee Wai Man

9481 6024

ENVIRON Hong Kong Limited

Independent Environmental Checker (IEC)

Independent Environmental Checker (IEC)

Mr. David Yeung

3743 0788

3548 6988

Lam Geotechnics Limited

Environmental Team (ET)

Environmental Team Leader (ETL)

Mr. Raymond Dai

2882 3939

2882 3331

 

2.5               Principle Work and Activities

2.5.1.        During this reporting period, the principle work activities for Contract no. HY/2009/11 are summarized in Table2.4.

Table 2.4   Principle Work Activities for Contract no. HY/2009/11

December 2010

January 2011

February 2011

Ÿ      Dredging works;

Ÿ      Reclamation works;

Ÿ      Construction & installation of seawall block;

Ÿ      Floating out of caisson seawall;

Ÿ      Construction & installation of seawall block;

Ÿ      Construction of coping;

Ÿ      Pre-casting the caisson seawall (off-site);

Ÿ      Delivery of caisson seawall;

Ÿ      Drainage construction works;

Ÿ      Installation of caisson Seawall; and

Ÿ      Temporary Protection and Precautionary Measures to Existing Island Eastern Corridor Structure

Ÿ     Dredging works;

Ÿ     Reclamation works;

Ÿ     Construction & installation of seawall block;

Ÿ     Floating out of caisson seawall;

Ÿ     Construction & installation of seawall block;

Ÿ     Construction of coping;

Ÿ     Delivery of caisson seawall,

Ÿ     Drainage construction works and

Ÿ     Installation of caisson Seawall.

Ÿ     Dredging works;

Ÿ     Reclamation works;

Ÿ     Construction & installation of Seawall Block;

Ÿ     Drainage Construction works; and

Ÿ     Construction of coping

 

 

2.5.2.        During this reporting period, the principle work activities for Contract no. HK/2009/01 are summarized in Table 2.5.

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

December 2010

January 2011

February 2011

Ÿ      Dredging woks had been completed about 46% for the open cut trench of cross harbour water mains;

Ÿ      Manufacturing of Taper-lok flange joint;

Ÿ      Trial pits for determination of connection location at both Wan Chai and Tsui Sha Tsui areas;

Ÿ      Routine maintenance and clearance works for silt screens;

Ÿ      Trial pits for determination of connection location at both Wan Chai and Tsim Sha Tsui areas;

Ÿ      Due to construction of SCL works, preparation works for temporary diversion of Convention Plaza discharge mains area;

Ÿ      6 pipe piles of P1 Wall had been installed; and

Ÿ      Fabrication of conveyor belt system for filling works at HKCEC water channel reclamation;

 

Ÿ      Dredging works for the open cut trench of cross harbour water mains;

Ÿ      Casting of concrete surround to submarine pipelines;

Ÿ      Concrete surrounded submarine pipeline were transported to fabrication yard for field jointing.;

Ÿ      Routine maintenance and clearance works for silt screens;

Ÿ      Trial pits for determination of connection location for HKAPA, Great Eagle Centre / Harbour Centre at Wan Chai areas;

Ÿ      Preparation works for temporary diversion of Convention Avenue discharge mains Due to construction of SCL works;

Ÿ      Erection of temporary staging platform was commenced;

Ÿ      Installation of pipe pile PQ4 down to -40mPD was completed;

Ÿ      The fabrication of extra 3 nos. of mud barges; and

Ÿ      Dredging at HKCEC water channel.

 

Ÿ      Casting of concrete surround to submarine pipelines;

Ÿ      Field jointing for steel pipes for surround pipelines at precast yard;

Ÿ      Joint initial survey at MTR Tsuen Wan Line tunnel (Wan Chai Side);.

Ÿ      Trim dredging for cross harbour water mains pipe trench (CHA970 - 1150);

Ÿ      Final joint hydrograph survey checking for cross harbour water mains pipe trench (Pipe line A1 to A10);

Ÿ      Removal of rock fill material and pipe trench excavation at west side sloping seawall of HKCEC extension;

Ÿ      Silt screen routine maintenance for the existing cooling water intake;

Ÿ      Installation of cooling main pipelines at HKCEC West Wing (Zone B1-2);

Ÿ      Preparation and excavation for pipe laying works at HKCEC Area (Zone B1-5);

Ÿ      Preparation and excavation for pipe laying works at Convention Avenue (Zone A4-1);

Ÿ      Construction for temporary diversion of Convention Plaza discharge mains at Convention Avenue (Zone A1-1);

Ÿ      Pump Station Nos. 1, 3, 4 & 5 were approved for stage 1 and all coring s under diameter 350 mm;

Ÿ      Preparation work for E&M first fixing at high level of Pump Station No. 1, 3, 4 & 5;

Ÿ      Dredging work up to CH 160 at HKCEC water channel;

Ÿ      Fabrication of floating pontoon for conveyor belt;

Ÿ      Installation of pipe piles P1 Wall;

Ÿ      Reclamation works at HKCEC; and

Ÿ      Preparation and excavation for pipe laying works at Convention Avenue (both Zone A5-1 and A2-2)

 

2.5.3.        During this reporting period, the principle work activities for Contract no. HK/2009/02 are summarized in Table 2.6.

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

December 2010

January 2011

February 2011

Ÿ      Site clearance; nbsp;        

Ÿ      Dredging in West temporary seawall construction in Area WCR1;

Ÿ      Rock Filling and Reclamation in Area WCR1;

Ÿ      Casting, delivery and installation of precast caisson seawalls, pumping stations and seawall blocks;

Ÿ      Permanent seawall construction;

Ÿ      Drainage diversion of existing 1800mm dia. pipe for WCR1 reclamation;

Ÿ      Road improvement at Junction of Fleming Road and Gloucester Road;

Ÿ      Road modification at Expo Drive East;

Ÿ      Construction of new public toilet and helipad terminal building at Expo Drive East;

Ÿ      Fabrication and delivery of HDPE pipe for submarine outfall;

Ÿ      Installation of ‘Z section of submarine outfall underneath the seawall;

Ÿ      Laying of cooling water mains;

Ÿ      Pre-bored H-piling at proposed WSD Salt Water Pumping Station;

Ÿ      Seawall construction near Expo Drive East;

Ÿ      Tree transplanting;

Ÿ      Establishing public fill sorting facility at TKO;

Ÿ      Testing with trial run of public fill sorting facility at TKO;

Ÿ      Trench excavation for construction of Salt Water Intake Culvert at Wan Shing Street;

Ÿ      Piling at new Wan Chai Ferry Pier;

Ÿ      Installation of building services for public toilet; and

Ÿ      Construction of precast units of Box Culvert N1, Salt Water Intake Culvert, Drain FRP-N and Cooling Water Discharge Pipe in Area WCR1.

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

Ÿ      Maintenance dredging works at TCBR4 and TCBR1E for mooring and anchorage rearrangement;

Ÿ      Dredging works at TPCWAE and TCBR1E for seawall;

Ÿ      Marine Site Investigation at TPCBR1E and TPCWAE;

Ÿ      Demolition of Ex-Fireboat Station; and

Ÿ      Erection of the CSHK’s Site Office

Ÿ      Site clearance;

Ÿ      Dredging in West temporary seawall construction in Area WCR1;

Ÿ      Rock Filling and Reclamation in Area WCR1;

Ÿ      Permanent seawall construction;

Ÿ      Drainage diversion of existing 1800mm dia. pipe for WCR1 reclamation;

Ÿ      Construction of new public toilet and helipad terminal building at Expo Drive East;

Ÿ      Seawall construction near Expo Drive East;

Ÿ      Tree transplanting;

Ÿ      Piling at new Wan Chai Ferry Pier;

Ÿ      Operation of Public Fill Sorting Facility at TKO 137;

Ÿ      Installation of building services for public toilet;

Ÿ      Construction of precast units of Box Culvert N1, Salt Water Intake Culvert, Drain FRP-N and Cooling Water Discharge Pipe in Area WCR1;

Ÿ      Installation of Cooling Main at China Resources Building;

Ÿ      Driven temporary sheetpiles, erect temporary shoring and excavation at China Resources Building, Great Eagle Centre/Harbour Centre;

Ÿ      Break or remove existing footpath for cooling main work at Great Eagle Centre and Harbour Centre;

Ÿ      Pile road test at WSD Salt Water Pumping Station;

Ÿ      Sheetpiles & Cantilever decking (Left Lane) at Wan Shing Street;

Ÿ      Dredging for Submarine outfall;

Ÿ      Outfall pipe installation for submarine sewage outfall; and

Ÿ      Excavation for WSD Salt Water Pumping Station

 

Ÿ      Construction of wall and roof floor slab for new public toilet at Expo Drive East was completed on 1 February 2011.

Ÿ      Construction of basement for new passenger terminal building was ongoing.

Ÿ      Partial demolition of existing ferry pier at Expo Drive East;

Ÿ      Preparation works for seawall modification at Expo Drive East ;

Ÿ      Excavation at Harbour Road and Harbour Centre for cooling mains;

Ÿ      Approximate 24m pipe was laid at Harbour Road;

Ÿ      Breaking DSD’s boundary wall;

Ÿ      Driving remaining sheet-piles for excavation and lateral support at WSD Salt Water

Ÿ      Pumping Station;

Ÿ      Excavation for construction of WSD Salt Water Pumping Station;

Ÿ      Driving sheet-piles at Wan Shing Street for WSD Intake Culvert;

Ÿ      Pre-bored sheet-pile for WSD Salt Water Intake Culvert;

Ÿ      Dredging for submarine outfall pipe;

Ÿ      Reclamation at WCR1 area;

Ÿ      Compaction for reclaimed land;

Ÿ      Strengthening for Western Temporary Seawall;

Ÿ      Pre-drilling of bored pile for tunnel structure;

Ÿ      Bored-pile works;

Ÿ      Guide wall for diaphragm wall construction;

Ÿ      1800 diameter drainage diversion; and

Ÿ      Road work for traffic diversion within pet garden

 

 

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

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

December 2010

January 2011

February 2011

Ÿ      Maintenance dredging works at TCBR4 and TCBR1E for mooring and anchorage rearrangement;

Ÿ      Dredging works at TPCWAE and TCBR1E for seawall;

Ÿ      Marine Site Investigation at TPCBR1E and TPCWAE;

Ÿ      Demolition of Ex-Fireboat Station; and

Ÿ      Erection of the CSHK’s Site Office

Ÿ      Dredging works at TCBR1W and TPCWAW;

Ÿ      Dredging works at TPCWAE and TCBR1E for seawall;

Ÿ      Type 3 sediments disposal; and

Ÿ      Ground investigation works

 

 

Ÿ      Rock removal at TS4 and TPCWA;

Ÿ      Disposal of Type 3 sediment;

Ÿ      Rock-filling at TS1, seawall block construction at TPCWA; and

Ÿ      Ground investigation and trial pit excavation

 

 

2.5.5.        No construction work was undertaken under Contract no.HK/2010/06 during this reporting period.

2.5.6.        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.  /span>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

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

Table 3.2  Real Time Noise Monitoring Station

District

Station

Description

Tin Hau

RTN1

FEHD Hong Kong Transport Section Whitefield Depot

North Point

RTN2

Oil Street Community Liaison Centre

 

Noise Monitoring Parameters, Frequency and Duration

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

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

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

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

3.1.5.        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.

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

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

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

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

3.2.                        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.

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.

Water Quality Monitoring Stations

3.3.2.        It is proposed to monitor the water quality at 9 WSD salt water intakes and 14 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

WSD7

Kowloon South

834150.0

818300.3

WSD9

Tai Wan

837921.0

818330.0

WSD10

Cha Kwo Ling

841900.9

817700.1

WSD15

Sai Wan Ho

841110.4

816450.1

WSD17

Quarry Bay

839790.3

817032.2

WSD19

Sheung Wan

833415.0

816771.0

WSD20

Kennedy Town

830750.6

816030.3

WSD21

Wan Chai

836220.8

815940.1

RW1

Wan Chai (Reprovision)

836188.8

815911.1

Cooling Water Intake

C1

HKCEC Extension

835885.6

816223.0

C2

Telecom House

835647.9

815864.4

C3

HKCEC Phase I

835836.2

815910.0

C4e

Wan Chai Tower and Great Eagle Centre (Eastern)

835932.8

815888.2

C4w

Wan Chai Tower and Great Eagle Centre (Western)

835629.8

815889.2

C5e

Sun Hung Kai Centre (Eastern)

836250.1

815932.2

C5w

Sun Hung Kai Centre (Western)

836248.1

815933.2

C6

World Trade Centre

837009.6

815999.3

C7

Windsor House

837193.7

816150.0

C8

City Garden

837970.6

816957.3

C9

Provident Garden

838355.0

817116.6

RC1

Proposed HKAPA Extension

835487.7

815987.7

RC5

Sun Hung Kai Centre (Reprovision)

836291.4

816029.7

RC7

Windsor House (Temporary Dilution)

837245.2

816156.6

 

Water Quality Parameters and frequency

3.3.3.        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. 

3.3.4.        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.

3.3.5.        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.

 

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

Working Area and the Causeway Bay Typhoon Shelter

3.3.6.        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.

3.3.7.        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

 

3.3.8.        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

3.3.9.        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.

3.3.10.    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 sahll be downloaded daily and compared with the Action and Limit level determined during the baseline water qualtiy monitoring at the cooling water intake locations.

 

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).

 

   4.1.          Noise Monitoring Results

Contract no. HY/2009/11  Central  Wanchai Bypass, North Point Reclamation

4.1.1.        The proposed division of noise monitoring stations for Contract no. HY/2009/11 are summarized in Table 4.1 below:

Table 4.1   Noise Monitoring Stations for Contract no.  /span>HY/2009/11

Station

Description

M4b

Victoria Centre

M5b

City Garden

 

4.1.2.        One action level exceedance was recorded due to the noise complaint regarding the noise nuisance arising from the 2 barges for filling operation near City Garden at 22:00 on 6 December 2010. No Limit Level exceedance was recorded in reporting period.

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

 

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

4.1.4.        The proposed division of noise monitoring stations are summarized in Table 4.2 below.

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

Station

Description

M1a

Harbour Road Sports Centre

4.1.5.        Seven limit level exceedances at M1a on 6, 14 and 25 December 2010, 4 and 12 January, 17 and 22 February 2011 during construction works at evening time for Contract no. HK/2009/02 in reporting quarter. Major noise source was contributed from Tonnochy Road and water sport competition at Wan Chai Training Swimming Pool. The dredging work was complied with the conditions under valid Construction Noise Permit no. GW-RS0777-10 during the measurement.

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

4.1.6.        The noise monitoring for HY/2009/15 was commenced on 10 November 2010. The proposed division of noise monitoring stations are summarized in Table 4.3 below. No exceedance was recorded in the reporting quarter.

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

Station

Description

M2b

Noon Gun Area

M3a

Tung Lo Wan Fire Station

 

   4.2.          Real Time Noise Monitoring Results

Contract no. HY/2009/11  Central  Wanchai Bypass, North Point Reclamation

4.2.1.        The proposed division of real time noise monitoring stations are summarized in Table 4.4 below. Real time noise monitoring for the piling works under contract no. HY/2009/11 was commenced on 5 October 2010.

Table 4.4  Real Time Noise Monitoring Station for Contract no. HY/2009/11

District

Station

Description

Tin Hau

RTN1

FEHD Hong Kong Transport Section Whitefield Depot

North Point

RTN2

Oil Street Community Liaison Centre

4.2.2.        Continuous limit level exceedances were recorded at FEHD Depot from 2025hrs to 2115 hrs on 21 December 2010 and from 2300hrs to 2325 hrs on 23 December 2010. Besides, the frequent limit level exceedances were recorded at Oil Street Community Centre from 19:46 to 21:21 on 7 December 2010. It was checked that there was no construction work near the FEHD station on 21 and 23 December 2010 and only maintenance works was conducted on 7 December 2010. It was anticipated that the noise exceedances were contributed from traffic along Island Eastern Corridor.

4.2.3.        Continuous Limit Level exceedances were recorded on 4 February 2011 evening time due to the shooting off the Lunar New Year Fireworks. It was concluded as non-project related exceedances

4.2.4.        Details of real time noise monitoring results and graphical presentation can be referred to Appendix 4.2

   4.3.          Air Monitoring Results

Contract no. HY/2009/11  Central  Wanchai Bypass, North Point Reclamation

4.3.1.        The proposed division of air monitoring stations is summarized in Table 4.5 below.

Table 4.5  Air Monitoring Stations for Contract no. HY/2009/11

Station

Description

CMA1b

Oil Street Community Liaison Centre

CMA2a

Causeway Bay Community Centre

 

4.3.2.        Since the filling work was commenced in mid-August 2010, the 1hr and 24-hr TSP monitoring were commenced on 12 August and 11 August 2010 respectively. Until the commencement of the permanent power supply connection at CMA1b on 22 September 2010, the 24hr TSP at CMA1b was then commenced on 27 September 2010. No exceedance was recorded in the reporting quarter. Details of noise monitoring results and graphical presentation can be referred in Appendix 4.2.

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

4.3.3.        Air monitoring will be commenced from the filling work for Contract no. HK/2009/01. The proposed division of air monitoring stations are summarized in Table 4.6  below.

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

Station

Description

CMA5a

Children Playgrounds opposite to Pedestrian Plaza

CMA6a

WDII PRE Site Office *

* Remarks: As per the ENPC meeting in January 2011, the monitoring stations CMA6a - Future AECOM site office at Work Area was renamed as remark.

 

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

4.3.4.        Air monitoring was commenced in mid-January 2011 for the land-filling work for Contract no. HK/2009/02. The proposed division of air monitoring stations is summarized in Table 4.7 below. No exceedance was recorded in the reporting period.

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

Station

Description

CMA4a

Society for the Prevention of Cruelty to Animals

 

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

4.3.5.        Air monitoring will be commenced from the land filling work for Contract no. HY/2009/15. The proposed division of air monitoring stations are summarized in Table 4.8 below.

 

 

 

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

Station

Description

CMA3a

CWB site office at Wanchai Waterfront Promenade

 

4.3.6.        No major dust impact is anticipated to be caused by the site preparation works and dredging works during the reporting quarter. Air monitoring will be commenced from the filling works for Contract no. HK/2009/01 and HY/2009/15. Therefore, no air monitoring was conducted for these two contracts in the reporting period.

   4.4.          Water Monitoring Results

Contract no. HY/2009/11  Central  Wanchai Bypass, North Point Reclamation

4.4.1.        Water quality monitoring for Contract no. HY/2009/11 was commenced on 19 March 2010. The proposed division of water monitoring stations for Contract no. HY/2009/11 is summarized in Table 4.9 below:

Table 4.9  Water Monitoring Stations for Contract no.  /span>HY/2009/11

Station Ref.

Location

Easting

Northing

WSD Salt Water Intake

WSD9

Tai Wan

837921.0

818330.0

WSD10

Cha Kwo Ling

841900.9

817700.1

WSD15

Sai Wan Ho

841110.4

816450.1

WSD17

Quarry Bay

839790.3

817032.2

Cooling Water Intake

C8

City Garden

837970.6

816957.3

C9

Provident Garden

838355.0

817116.6

 

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

4.4.2.        Water quality monitoring for Contract no. HK/2009/01 was commenced on 8 July 2010. The proposed division of water monitoring stations is summarized in Table 4.10 below.

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

Station Ref.

Location

Easting

Northing

WSD Salt Water Intake

WSD7

Kowloon South

834150.0

818300.3

WSD19

Sheung Wan

833415.0

816771.0

WSD20

Kennedy Town

830750.6

816030.3

Cooling Water Intake

C1

HKCEC Extension

835885.6

816223.0

C2

Telecom House

835647.9

815864.4

C3

HKCEC Phase I

835836.2

815910.0

C4e

Wan Chai Tower and Great Eagle Centre (Eastern)

835932.8

815888.2

C4w

Wan Chai Tower and Great Eagle Centre (Western)

835629.8

815889.2

 

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

4.4.3.        Water quality monitoring for Contract no. HK/2009/02 was commenced on 8 July 2010. The proposed division of water monitoring stations is summarized in Table 4.11 below.

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

Station Ref.

Location

Easting

Northing

WSD Salt Water Intake

WSD21

Wan Chai

836220.8

815940.1

Cooling Water Intake

C5e

Sun Hung Kai Centre (Eastern)

836250.1

815932.2

C5w

Sun Hung Kai Centre (Western)

836248.1

815933.2

 

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

 

4.4.4.        Due to the commencement of the maintenance dredging on 10 November 2010, water quality monitoring for Contract no. HY/2009/15 was commenced on 9 November 2010. The proposed division of water monitoring stations is summarized in Table 4.12 below.

Table 4.12 Water Monitoring Stations for Contract no. HY/2009/15

Station Ref.

Location

Easting

Northing

Cooling Water Intake

C6

Excelsior Hotel

837009.6

815999.3

C7

Windsor House

837193.7

816150

 

4.4.5.        The enhanced water quality monitoring at C6, C7, Ex-WPCWA-SW and Ex-WPCWA-SE was commenced on 13 January 2011. No exceedance was recorded in the reporting period.

4.4.6.        During dredging of the sediment at the south-western corner of the Causeway Bay Typhoon Shelter between 15 February and 24 February 2011, daily monitoring of suspended solids and 24 hours monitoring of turbidity at cooling water intakes at C6 was be conducted. No project-related exceedance was recorded.

4.4.7.        As per the advised from the RE on 15 February 2011, the maintenance works and suspension of flush water pump system at Windsor House intake (C7) have been carried out between 15 February and 31 March 2011. The installed silt screen at C7 was then removed on 15 February 2011 to facilitate their maintenance works as per the intake owner’s request. Considering the absence of intake pump operation at Windsor House intake (C7), this sensitive receiver was apparently not exist during this period so that no water quality monitoring at C7 for compliance checking was undertaken starting from 15 February in this reporting period.

4.4.8.        Due to the access restriction of WSD Salt Water Pumping Stations owing to security reasons and no dredging activities confirmed with the Contractor between 3 February and 6 February 2011 (Chinese Lunar New Year Holiday), the scheduled impact water monitoring on 3 and 4 February 2011 was cancelled.

4.4.9.        Water monitoring results measured in this reporting period are reviewed and summarized in Table 4.13. Details of water quality monitoring results and graphical presentation can be referred in Appendix 4.3.

Table 4.13 Summary of Water Quality Monitoring Exceedances in Reporting Quarter

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

HY/2009/11

WSD9

0

0

0

0

0

0

0

0

0

0

0

0

 

WSD10

0

0

0

0

0

0

0

0

0

0

1

0

 

WSD15

0

0

0

0

0

0

0

0

0

0

1

3

 

WSD17

0

0

0

0

1

0

0

0

0

0

0

0

 

C8

0

0

2

4

6

2

0

0

1

1

1

1

 

C9

0

0

1

2

6

1

0

0

0

0

1

0

HK/2009/01

WSD19

0

0

0

0

1

0

0

0

0

0

1

1

 

WSD20

0

0

1

4

0

6

0

0

0

0

2

0

 

WSD7

0

0

0

0

0

0

0

0

1

0

1

1

 

C1

0

0

0

0

0

0

0

0

0

0

0

0

 

C2

0

0

0

0

0

0

0

0

0

0

0

0

 

C3

0

0

0

0

1

0

0

0

0

0

0

0

 

C4e

0

0

0

0

0

0

0

0

0

0

0

0

 

C4w

0

0

0

0

0

1

0

0

0

0

0

0

HK/2009/02

C5e

0

0

0

2

3

0

0

0

0

0

0

1

 

C5w

0

0

1

1

1

0

0

0

0

0

2

0

 

WSD21

0

0

1

0

1

1

0

0

0

0

0

0

HY/2009/15

C6

0

0

2

3

1

2

0

0

0

1

1

0

 

C7

0

0

1

0

0

0

0

0

0

0

0

0

Total

0

0

9

16

21

13

0

0

2

2

11

7

 

4.4.10.    The exceedances have been investigated and were considered unlikely to be related to project works except the SS and turbidity exceedances at C8 on 16 and 30 December 2010 at mid-flood tide, C6 on 7 February 2011 at mid-flood and mid-ebb tides and turbidity exceedances recorded at C5e, C5w and WSD21 on 11 February 2011 at mid-flood. Water monitoring results measured in this reporting period are reviewed and summarized. Details of graphical presentation can be referred in Appendix 4.2.

 

   4.5.          Waste Monitoring Results

Contract no. HY/2009/11  Central  Wanchai Bypass, North Point Reclamation

4.5.1.        No inert and non-inert C&D waste was disposed in this reporting period. Details of the waste flow table are summarized in Table 4.14

Table 4.14 Details of Waste Disposal for Contract no. HY/2009/11

Waste Type

Quantity this quarter

Cumulative Quantity-to-Date

Disposal / Dumping Grounds

Inert C&D materials disposed, m3

NIL

NIL

N/A

Inert C&D materials recycled, m3

NIL

NIL

N/A

Non-inert C&D materials disposed, m3

NIL

NIL

SENT Landfill

Non-inert C&D materials recycled, m3

NIL

NIL

N/A

Chemical waste disposed, kg

N/A

N/A

N/A

Marine Sediment (Type 1  Open Sea Disposal), m3

0

(Bulk Volume)

89,500

(Bulk Volume)

South of Cheung Chau

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

7,800

(Bulk Volume)

125,300

(Bulk Volume)

East of Sha Chau

 

4.5.2.        Contractor clarified that the quantity of Marine Sediment (Type 1  Open Sea Disposal (Dedicate Sites) & Type 2  Confined Marine Disposal), m3 in December 2010 shall be 4,800m3 and cumulative quantity of this type sediment up to February 2011 is 125,300m3. It will be also updated in the coming Monthly EM&A Report for March 2011.

4.5.3.        There was marine sediment Type 1  Open Sea Disposal (Dedicate Sites) & Type 2   Confined Marine Disposal marine sediment disposed in the reporting period. The maximum dredging rate in North Point Shoreline Zone is 1,500m3 per day in the reporting quarter, which is complied with the criteria listed in Table 2 of FEP-01/356/2009.

 

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

4.5.4.        Inert and non-inert C&D waste was disposed of for the site preparation works in this reporting period. Details of the waste flow table are summarized in Table 4.15.

Table 4.15 Details of Waste Disposal for Contract no. HK/2009/01

Waste Type

Quantity this quarter

Cumulative Quantity-to-Date

Disposal / Dumping Grounds

Inert C&D materials disposed, m3

2,295.39

3,699.89

TKO134

Inert C&D materials recycled, m3

NIL

NIL

N/A

Non-inert C&D materials disposed, m3

61.08

166.5

SENT Landfill

Non-inert C&D materials recycled, kg

4438

14,678

N/A

Chemical waste disposed, kg

1,170

1,830

N/A

Marine Sediment (Type 1  Open Sea Disposal) , m3

14,882.2

(Bulk Volume)

67,379.2

 /span>(Bulk Volume)

South of Cheung Chau

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

5,799

(Bulk Volume)

12,461

(Bulk Volume)

 

East of Cha Chau

 

 

4.5.5.        Checking on the quantity of the non-inert C&D material recycled with Contractor, there were the calculation errors on the quantity reported in past months. Contractor clarified that the non-inert C&D material recycled in kg should be as Table4.15a.

Table 4.15a Details of Non-inert C&D Material Recycled for Contract no. HK/2009/01

Month

Non-inert C&D materials recycled, kg

Jul 2010

2890

Aug 2010

0

Sept 2010

0

Oct 2010

150

Nov 2010

7200

Dec 2010

4310

Jan 2011

128

Feb 2011

0

Cumulative Quantity-to-Date

14,678

 

4.5.6.        There were marine sediments Type 1  Open Sea Disposal and Type 1  Open Sea Disposal (Dedicate Sites) & Type 2   Confined Marine Disposal marine sediment disposed in the reporting period. The maximum dredging rate in Cross Harbour Water Mains marine work zone and HKCEC1 subzone under Hong Kong Convention Exhibition Centre (HKCEC) marine work zone are 654m3 per day, which is complied with the recommended maximum dredging rate per day listed in Table 2 of FEP-02/356/2009.

 

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

4.5.7.        Inert and non-inert C&D waste was disposed of for the site preparation works in this reporting period. Details of the waste flow table are summarized in Table 4.16.

Table 4.16 Details of Waste Disposal for Contract no. HK/2009/02

Waste Type

Quantity this quarter

Cumulative Quantity-to-Date

Disposal / Dumping Grounds

Inert C&D materials disposed, m3

1,149

4,996

TKO137

Inert C&D materials recycled, m3

NIL

NIL

N/A

Non-inert C&D materials disposed, m3

23.2

63.7

SENT Landfill

Non-inert C&D materials recycled, m3

NIL

NIL

N/A

Chemical waste disposed, kg

NIL

NIL

N/A

Marine Sediment (Type 1  Open Sea Disposal), m3

0

(Bulk Volume)

82,257

(Bulk Volume)

South of Cheung Chau

 

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

10,595

 /span>(Bulk Volume)

87,565

(Bulk Volume)

East of Sha Chau

 

4.5.8.        There were marine sediments Type 1  Open Sea Disposal and Type 1  Open Sea Disposal (Dedicate Sites) & Type 2   Confined Marine Disposal marine sediment disposed in the reporting period at a maximum dredging rate 1,260m3 per day, which is complied with the recommended maximum dredging rate per day in Wan Chai Reclamation (WCR) marine work zone and sub-marine pipeline work zone listed in Table 2 of FEP-03/356/2009.

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

4.5.9.        Inert and non-inert C&D waste was disposed of for the site preparation works in this reporting period. Details of the waste flow table are summarized in Table 4.17.

Table 4.17 Details of Waste Disposal for Contract no. HY/2009/15

Waste Type

Quantity this quarter

Cumulative Quantity-to-Date

Disposal / Dumping Grounds

Inert C&D materials disposed, m3

3.5

3.5

Tuen Mun

Area 38

Inert C&D materials recycled, m3

184.0

184.0

To Contract

HY/2009/11

Non-inert C&D materials disposed, m3

26.0

30.2

SENT Landfill

 

Non-inert C&D materials recycled, kg

95

13,530

N/A

Chemical waste disposed, kg

NIL

NIL

N/A

Marine Sediment (Type 1  Open Sea Disposal) , m3

NIL

NIL

N/A

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

107,487

(Bulk Volume)

119,877

(Bulk Volume)

 

East of Sha Chau

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

2,750

(Bulk Volume)

 

2,750

(Bulk Volume)

 

East of Sha Chau

 

4.5.10.    There were marine sediments Type 1  Open Sea Disposal (Dedicate Sites) & Type 2  Confined Marine Disposal marine and Type 3  Special Treatment / Disposal contained in Geosynthetic Containers sediment disposed from the dredging works at TCBR and TPCWA in the reporting period at a maximum dredging rate 3,805m3 per day, which is complied with the recommended maximum dredging rate per day in Wan Chai Reclamation (WCR) marine work zone and sub-marine pipeline work zone listed in Table 2 of FEP-04/356/2009.

 

5.     Compliance Audit

5.0.1.        The Event Action Plan for construction noise, air quality and water quality are presented in Appendix 5.1.

5.1.               Noise Monitoring

5.1.1          Seven limit level exceedances at M1a on 6, 14 and 25 December 2010, 4 and 12 January, 17 and 22 February 2011 during construction works at evening time for Contract no. HK/2009/02 in reporting quarter. Major noise source was contributed from Tonnochy Road and water sport competition at Wan Chai Training Swimming Pool. The dredging work was complied with the conditions under valid Construction Noise Permit no. GW-RS0777-10 during the measurement.

5.1.2          One action level exceedance was recorded due to the noise complaint regarding the noise nuisance arising from the 2 barges for filling operation near City Garden at 22:00 on 6 December 2010. No Limit Level exceedance was recorded in reporting period.

5.2.               Real-time Noise Monitoring

5.2.1.        Continuous limit level exceedances were recorded at FEHD Depot from 2025hrs to 2115 hrs on 21 December 2010 and from 2300hrs to 2325 hrs on 23 December 2010. Besides, the frequent limit level exceedances were recorded at Oil Street Community Centre from 19:46 to 21:21 on 7 December 2010. It was checked that there was no construction work near the FEHD station on 21 and 23 December 2010 and only maintenance works was conducted on 7 December 2010. It was anticipated that the noise exceedances were contributed from traffic along Island Eastern Corridor.

5.2.2.        Continuous Limit Level exceedances were recorded on 4 February 2011 evening time due to the shooting off the Lunar New Year Fireworks. It was concluded as non-project related exceedances

5.3.               Air Monitoring

5.3.1.        No exceedance was recorded in the reporting quarter.

5.4.               Water Quality Monitoring

5.4.1.        The summary of water quality exceedances recorded in reporting quarter is presented in the Table 5.1.

Table 5.1  Summary of Water Quality Exceedances in the Reporting Quarter

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

HY/2009/11

WSD9

0

0

0

0

0

0

0

0

0

0

0

0

 

WSD10

0

0

0

0

0

0

0

0

0

0

1

0

 

WSD15

0

0

0

0

0

0

0

0

0

0

1

3

 

WSD17

0

0

0

0

1

0

0

0

0

0

0

0

 

C8

0

0

2

4

6

2

0

0

1

1

1

1

 

C9

0

0

1

2

6

1

0

0

0

0

1

0

HK/2009/01

WSD19

0

0

0

0

1

0

0

0

0

0

1

1

 

WSD20

0

0

1

4

0

6

0

0

0

0

2

0

 

WSD7

0

0

0

0

0

0

0

0

1

0

1

1

 

C1

0

0

0

0

0

0

0

0

0

0

0

0

 

C2

0

0

0

0

0

0

0

0

0

0

0

0

 

C3

0

0

0

0

1

0

0

0

0

0

0

0

 

C4e

0

0

0

0

0

0

0

0

0

0

0

0

 

C4w

0

0

0

0

0

1

0

0

0

0

0

0

HK/2009/02

C5e

0

0

0

2

3

0

0

0

0

0

0

1

 

C5w

0

0

1

1

1

0

0

0

0

0

2

0

 

WSD21

0

0

1

0

1

1

0

0

0

0

0

0

HY/2009/15

C6

0

0

2

3

1

2

0

0

0

1

1

0

 

C7

0

0

1

0

0

0

0

0

0

0

0

0

Total

0

0

9

16

21

13

0

0

2

2

11

7

 

5.4.2.        Investigations were found that the most of exceedances are unikely related to the Project works except the SS and turbidity exceedances at C8 on 16 and 30 December 2010 at mid-flood tide, C6 on 7 February 2011 at mid-flood and mid-ebb tides and turbidity exceedances recorded at C5e, C5w and WSD21 on 11 February 2011 at mid-flood.

5.4.3.        Exceedance at C8 on 16 and 30 December 2010 was recorded. Due to intake owner's constraint, delay was experienced in the re-provision of modified frame-type silt screen to protect City Garden intake against potential impact arising from the dredging works and accumulation of pollutants from nearby outfall adjacent to the intake. The exceedances were confirmed related to HY/2009/11 contractor difficulties in the provision of frame type silt screen. Contractor enhanced mitigation measures with a double layer silt curtain on 7 January 2011. No further exceedance was recorded after installation of double layer silt curtain. Close monitoring on contractor mitigation and the variation of water quality results will be maintained.

5.4.4.        The turbidity exceedances were recorded at C5e, C5w and WSD21 on 11 Feb 2011 at mid-flood when the local buckling of western sheetpile temporary seawall at WCR1 was recorded in the morning of 11 February 2011. These exceedances were confirmed due to the buckling of western sheetpile temporary seawall. Contractor had immediately installed the additional silt curtain surround the location of buckling seawall on that day.

5.4.5.        Turbidity and SS exceedances at C6 on 7 February 2011 at mid-flood and mid-ebb tides were recorded. Further investigation on 9 Feb 2011 revealed the crack on the silt screen at C6. A crack on silt screen structure leaded to ingress of unscreened polluted water directly to the intake created by frequent vessel movement on shallow water in Causeway Bay Typhoon Shelter. The exceedances were confirmed due to the silt screen defect.

5.5.               Site Audit

5.5.1.        There was no non-compliance from the site audits in the reporting period. During environmental site inspections conducted during the reporting quarter, minor deficiencies were noted. However, the Contractor rectified all deficiencies after receipt of notification.

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

5.6.1.        No project-related non-compliance from monitoring was recorded in the reporting period.

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

5.7.1.        There was no particular action taken since no project-related non-compliance was recorded from the site audits and environmental monitoring in the reporting period.

 

6.     Complaints, Notification of Summons and Prosecution

6.0.1.        There were two environmental complaints were received on 3 and 6 December 2010 in this reporting period. The complaint received on 3 December 2010 was regarding to the bad odour generated from the dredging plant off North Point. The noise nuisance and visual impact was complained on 6 December 2010 that was arisen from the 2 barges and spot light pointing directly to the complainant flat.  /span>

6.0.2.        The complainant from City Garden complained on the bad odour from the dredging plant off North Point on 3 December 2010 at 01:45. Investigation of the backhoe barge at City garden conducted by ET with RE and Contractor of Contract HY/2009/11 was carried on 8 December 2010. No irritated odour was noted during the site investigation.

6.0.3.        The noise and visual complaint was complained on 6 December 2010 by the complainant from the City Garden. It was complained on two barges generating noise at 22:00 on 6 December 2010 in which the noise from filling operation was louder than the traffic noise and visual impact generating due to the spot-light pointing directly to the complainant flat and suspected the filling operation was part of Wanchai Development Phase II. Complainant also raised the same complaint to District Councillor, Mr. Hui on 7 Dec 2010 regarding the night time noise and suspected earlier start of work at 06:30. Complaint also requested for limiting the plant operating hours from 09:00-21:00.

6.0.4.        It was checked and confirmed that the two derrick barges were in operation at the time of complaint for placing 400 rockfill onto the excavation trench and for levelling the formation level to receive the pre-cast caisson seawall and flood light on the control mast of derrick barge have no lighting shields for the prevention of glare of flood lights causing visual glare to the complainant at night-time. Besides, construction works was started after 0800hrs on 7 December 2010. It was found that the occasional noise nuisance might be caused by the hitting or scratching onto the rock surface during loading down the grab onto the Grade 400 rockfill. Contractor was advised to minimize the finishing time of placing Grade 400 rockfill at 2100hrs and switch off all unnecessary floodlights apart from the light for the safety and security purpose.

6.0.5.         /span>The details of cumulative complaint log and summary of complaints are presented in Appendix 6.1.

6.0.6.        No notification of summons or prosecution was received in the reporting period. Cumulative statistic on complaints and successful prosecutions are summarized in Table 6.1 and Table 6.2 respectively.

Table 6.1  Cumulative Statistics on Complaints

Reporting Period

No. of Complaints

Dec 2010  Feb 2011

2

Project-to-Date

9

 

Table 6.2  Cumulative Statistics on Successful Prosecutions

Environmental Parameters

Cumulative No. Brought Forward

No. of Successful Prosecutions this quarter (Offence Date)

Cumulative No. Project-to-Date

Air

-

0

0

Noise

-

0

0

Water

-

0

0

Waste

-

0

0

Total

-

0

0

 

6.0.7.        Incidents of split bottom hopper barge named Shun Tat 11 (Licence no. B21623V) were recorded near Kwai Shek (200-300m distance) under Contract no. HY/2009/15 on 17 December 2010 and at the location near Cross Harbour Water Mains marine work zone under Contract no. HK/2009/01 on 24 January 2011.

6.0.8.        The hopper barge under Contract no. HY/2009/15 was trapped by a strong current and grounded on shallow rock clusters on 17 December 2010. Jettison of marine sediment (Type 1  Open Sea Disposal (Dedicate Sites) & Type 2  Confined Marine Disposal) in hopper barge at the scene of incident was needed in order to avoid capsizing of vessel. Contractor informed this incident to EPD on 18 December 2010.

6.0.9.        The ballast tank on the port side of the split hopper barge under Contract no. HK/2009/01was flooded with water on 24 January 2011. It was towed back to the dredging zone within a short period and immediately opened its hopper to dump the sediment back to the same dredging trench. It is suspected that the hull on the port side might be broken causing ingress of seawater into the ballast tanks. Meanwhile, the barge has been demobilized from the site and currently anchored at To Kwa Wan Typhoon Shelter. The emergency dumping was notified to EPD on 24 January 2011 at 10:00a.m. This barge will not be deployed to the site under HK/2009/01 to dispose the dredged sediment until it has been repaired and inspected by the competent surveyor. These incidents will be kept in view for determining further follow up and remedial measures. All Contractors under EP-356/2009 were reminded to ensure the deployed hopper barge has been adequately checked by qualified person and ensured in good condition before the engagement on site.

 

7.     Cumulative Construction Impact due to the Concurrent Projects

7.0.1.        According to Condition 3.4 of the EP-356/2009, this section addresses the relevant cumulative construction impact due to the concurrent activities of the current projects including the Central Reclamation, Central-WanChai Bypass and Island Eastern Corridor Link projects.

7.0.2.        According to the construction programme of Wan Chai Development Phase II, Central-Wan Chai Bypass and Island Eastern Corridor Link projects, the major construction activities under Wan Chai Development Phase II were the dredging and filling works at North Point Reclamation Shoreline Subzone (NPR2E) and (NPR1) respectively, the dredging and filling at submarine sewage pipeline and Wan Chai Reclamation Shoreline Subzone (Submarine sewage pipeline) respectively, dredging at HKCEC3W and cross harbour water mains and dredging at TCBR in the reporting period. The major environmental impact was water quality impact at North Point and Wan Chai.

7.0.3.        The major environmental impacts generated from the filling work at Central Reclamation Phase III were only located along the coastline of Central and Admiralty. As the recorded project-related exceedances in North Point, Causeway Bay Typhoon Shelter and Wan Chai that was localized interference and far away from the work area of CRIII, it is evaluated the cumulative construction impact from the concurrent projects including Wan Chai Development Phase II and Central Reclamation Phase III was insignificant.

8.     Conclusion

8.0.1.        The EM&A programme was carried out in accordance with the EM&A Manual requirements, minor alterations to the programme proposed were made in response to changing circumstances.

8.0.2.        No non-compliances were noted and no prosecutions were received during the reporting quarter.

8.0.3.        The construction programmes of individual contracts are provided in Appendix 8.1.