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, Fep-04/356/2009

and fep-05/356/2009

 

Quarterly Environmental Monitoring
and Audit Report

 

- september to November 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:

 

 

4 January 2012


Table of contents

 

EXECUTIVE SUMMARY. 4

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. 18

3.1.    Noise Monitoring. 18

3.2.    Air Monitoring. 19

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. 31

5.   Compliance Audit. 35

5.1.    Noise Monitoring. 35

5.2.    Real-time Noise Monitoring. 35

5.3.    Air Monitoring. 35

5.4.    Water Quality Monitoring. 35

5.5.    Site Audit 37

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

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

6.   Complaints, Notification of Summons and Prosecution. 37

7.   Cumulative Construction Impact due to the Concurrent Projects. 42

8.   Conclusion. 43


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 V       Principle Work Activities for Contract no. HK/2010/06

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 2.8      Principle Work Activities for Contract no. HK/2010/06

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. HK/2010/06

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

Table 4.14     Summary of Water Quality Monitoring Exceedances in Reporting Quarter

Table 4.14a    Summary of Enhanced Dissolved Oxygen Monitoring Exceedances in Reporting Quarter

Table 4.15    Details of Waste Disposal for Contract no. HY/2009/11

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 5.1     Summary of Water Quality Monitoring Exceedances in Reporting Quarter

Table 5.1a     Summary of Enhanced Dissolved Oxygen Monitoring Exceedances in 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 3.2   Report of Review Baseline Noise Level

Appendix 3.3   Report on Noise Level Review for Real-time Noise Monitoring during Night Time

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> September to November 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, FEP-04/356/2009 and FEP-05/356/2009. This report presents the environmental monitoring and audit findings and information during the period from 28th September to 27th November 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

September 2011

October 2011

November 2011

Ÿ     Reclamation works;

Ÿ     Geo-textile laying;

Ÿ     Drainage Construction works;

Ÿ     Outfall construction works (Open Channel U);

Ÿ     Sheet Pilling;

Ÿ     Pre-casting of Coping; and

Ÿ     Construction & installation of Seawall Concrete Block

Ÿ     Sheet Pilling;

Ÿ     Geo-textile laying;

Ÿ     Slotted panel fixing;

Ÿ     Reclamation works;

Ÿ     Precasting of Coping;

Ÿ     Drainage Construction works;

Ÿ     Installation of berm blocks;

Ÿ     Construction of FEHD carpark and associated works;

Ÿ     Outfall construction works (Open Channel U); and

Ÿ     Installation of precast concrete blocks at seawall type 6 & 7

Ÿ     Geo-textile laying;

Ÿ     Slotted panel fixing;

Ÿ     Reclamation works;

Ÿ     Installation of Precast Coping;

Ÿ     Drainage Construction works;

Ÿ     Installation of Berm Blocks;

Ÿ     Outfall construction works (Open Channel U); 

Ÿ     Installation of precast concrete blocks at seawall type 6 & 7;

Ÿ     Construction of Seawall Type 8; and

Ÿ     Placing Granite Facing Stone

 

  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

September 2011

October 2011

November 2011

Ÿ     Installation of silt screen (type 1) at TST;

Ÿ     Seawall toe block installation for reinstating seawall at Zone B1-3;

Ÿ     Dredging within HKCEC Water Channel from CH160 to CH190 for Type 1 & 2 sediment;

Ÿ     Trench backfilling and seawall reinstatement for both the completed cross-harbour watermains and the seawall near Expo Promenade (Zone B1-3);

Ÿ     Installation of cross-harbour watermains nos. A8 & B8;

Ÿ     Final trimming within Principle Fairway for cross-harbour watermains installation;

Ÿ     Platform erection for crawler crane mobilization near the existing seawall at Salisbury Garden had been completed and WSD’s consent had been given for mobilization of crawler crane to the jack-up barge. Mobilization;

Ÿ     The trench excavation works at Zone B1-4, B4-2, A1-2, A2-4A, A3-3, A4-3B, A4-3B, A4-3C and A5-5;

Ÿ     Trench excavation works at Zone A3-2A;

Ÿ     Excavation for jacking pits for pipe laying works by heading method along Convention Avenue at Zone A1-2A, A1-4A and A2-4A;

Ÿ     Heading No. H2, H5 and H6 (Mainlaying works by trenchless method); and

Ÿ    Trench excavation for a 1000 dia. Watermains at Salisbury Garden

Ÿ     Installation of silt screen (type 3) at TST;

Ÿ     Removal of rock armour at North Bank of HKCECC Water Channel between CH156 and CH185;

Ÿ     Rockfilling for sheet pile water channel from Ch120 to Ch160;

Ÿ     Installation of sheet pile for cooling water intake at Dome Promenade between CH120 and CH160;

Ÿ     Construction of retaining wall (Base Slab) at Zone B1-3;

Ÿ     Construction of precast RC outfall for subsequent seawall reinstatement at Zone B1-3;

Ÿ     Reclamation HKCEC3w (up to Ch110) within HKCEC Water Channel;

Ÿ     Installation of cross harbour watermains nos. A9/B9 and A10;

Ÿ     Thrust block construction for A5B5;

Ÿ     Dredging of Type 2 sediment from Ch50 to CH250 for subsequent cross-harbour watermains installation off Tsim Sha Tsui;

Ÿ     Installation of pipe pile wall at TST landfall section was commenced;

Ÿ     Installation of sheet pile wall for pipe trench dredging at TST;

Ÿ     The trench excavation works at Zone B1-4, B4-2m B4-5m A1-2, A2-4A, A3-3, A3-2A, A4-3B, A4-4C and A5-5;

Ÿ     The trench excavation works at Zone B 4-2 and B4-5;

Ÿ     Heading No H2, H5 and H7 (Mainlaying works by trenchless method);

Ÿ     Tree transplant and its corresponding planter modification at Expo Drive were commenced. Such preparation works was catered for subsequent TTA implementation at the time when Zone B1-6 and B202 was being fenced off for the subsequent mainlaying works; and

Ÿ    Trench excavation and pipe laying works for a 1000 dia. watermains (CHF) at Salisbury Garden

Ÿ     Rock-filling for sheet pile water channel from CH120 to CH160;

Ÿ     Dredging works within HKCEC Water Channel from CH190 to CH260 for Type 1&2 sediment;

Ÿ     Removal of rock armours from CH150 to CH260 at the north bank of HKCEC Water Channel;

Ÿ     Installation of sheet pile for cooling water intake at Dome Promenade between CH120 and CH160;

Ÿ     Pre-cast RC outfall for subsequent seawall reinstatement at Zone B1-3 has been concreted;

Ÿ     Reclamation of HKCEC3W (up to CH110) with in HKCEC Water Channel has been commenced and substantially completed;

Ÿ     Installation of cross-harbor watermains nos. B10, A11/B11, A12/B12 and A13;

Ÿ     Trust block construction for A5B5 was substantially completed;

Ÿ     Dredging of Type 3 sediment from CH50 to Ch250 for subsequent cross-harbor watermains installation off Tsim Sha Tsui;

Ÿ     Installation of pipe pile wall at TST seafront;

Ÿ     Installation of sheet pile wall for pipe trench dredging at TST was substantially completed;

Ÿ     Mainlaying works at Zone B1-4, B4-2, B4-5, A3-3, A3-2A, HKCEC Way In/Out, A4-3B, A2-23B and A5-5;

Ÿ     Reinstatement works at Zone B1-4 and A3-3;

Ÿ     Mainlaying works at Zone A1-2 was substantially completed;

Ÿ     Mainlaying works at Zone HKCEC Way In/Out;

Ÿ     Headind No. H2 was substantially complete;

Ÿ     Heading No. H3, H4, H5 and H7;

Ÿ     Mainlaying works and the subsequent carriageway reinstatement in Zone A4-3C was substantially completed;

Ÿ     Tree transplantation and its corresponding planter modification at Expo Drive; and

Ÿ    Trench excavation and pipe laying works for a 1000 dia. Watermains (CHF) at Salisbury Garden

 

  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

September 2011

October 2011

November 2011

Ÿ       Tseung Kwan O public fill sorting facility 18,615.6 m3 sorted fill produced this month.

Ÿ      Steel fixing of Passenger Terminal Building was completed on 8 September 2011;

Ÿ      Demolition of existing ferry pier;

Ÿ      Racking piles and dredging work of Ferry Pier;

Ÿ      Formwork for lift shaft of Passenger Terminal Building;

Ÿ      Fixing G/F to 1/F R.C wall waling on Passenger Terminal Building;

Ÿ      Construction of wash out chamber at Harbour Road and access manhole at Harbour Centre;

Ÿ      Reinstatement work for footpath and existing inspection chamber at Great Eagle Centre;

Ÿ      Trench excavation and deck over works along Tonnochy Road;

Ÿ      Approximate 55m cooling water pipe was laid at Harbour Centre, Harbour Road and ex-pet garden;

Ÿ      Grouting for the cross road pipeline of Harbour Road;

Ÿ      Installation of PVC and G.I cable ducts was ongoing at Harbour Road;

Ÿ      Wall and column construction below -0.8 mPD;

Ÿ      Installation of submarine outfall pipe up to CHA-105 and CHB-130, continue backfill on the HDPE pipelines;

Ÿ      Dredging for submarine outfall pipe;

Ÿ      3 out of 12 nos of pre-bored H-pile for box culverts N1 was reached to founding levels;

Ÿ      1st and 2nd loading test of New Ferry Pier;

Ÿ      Marine piling works for new ferry pier was ongoing. 83 out of 83 nos. marine piles;

Ÿ      Dredging inside the piles was ongoing. 45 out of 83 piles;

Ÿ      Wall and column construction below -0.8 mPD;

Ÿ      Casting of the base slab of WSD Receiving Pit;

Ÿ      Excavation and lateral support for DSD receiving pits;

Ÿ      Half landing slab for P7, P8 & P9 Pumping Stations was completed, top slab false work & formwork erection;

Ÿ      Expo Drive East mass concreting coping formwork erection;

Ÿ      Levelling for proposed bream blocks in progress at Vertical Seawall T4 to T6; and

Ÿ     Commenced fabricating the steel frames for water diversion and temporary sheet piles walls for WCR2 reclamation.

Ÿ     Digging trial pit for bus shelter footing at Expo Drive East;

Ÿ     Fixing up reinforcement for 1/F beam of Passenger Terminal Building;

Ÿ     Erecting formwork of 1/F slab of of Passenger Terminal Building;

Ÿ     Fixing 1/F to 2/F R;C wall waling on Passenger Terminal Building;

Ÿ     Formwork for lift shaft of Passenger Terminal Building;

Ÿ     Demolition of existing ferry pier;

Ÿ     Racking piles and dredging work of Ferry Pier;

Ÿ     Demolition of remaining portion of cover walkway of New Public Toilet;

Ÿ     Construction of wash out chamber at Harbour Road and access manhole at Harbour  Centre;

Ÿ     Reinstatement work for footpath and existing inspection chamber at Great Eagle Centre;

Ÿ     Trench excavation and deck over works along Tonnochy Road;

Ÿ     Installation of PVC and G;I cable ducts was ongoing at Harbour Road;

Ÿ     Approximate 56m cooling water pipe was laid at Harbour Centre; Harbour Road and ex-pet garden;

Ÿ     Installation of submarine outfall pipe up to CHA-105 and CHB-130; continue backfill on the HDPE pipelines;

Ÿ     Dredging for submarine outfall pipe;

Ÿ     Filling up grade 75 to gap between casing sleeves and pile casing of new ferry pier;

Ÿ     3rd and 4th loading test of New Ferry Pier were completed on 26 September 2011 and 11 October 2011;

Ÿ     Grouting plug in piles of New Ferry Pier;

Ÿ     Dredging inside the piles was completed;

Ÿ     Installation of lateral support and excavation for common trench for 132kV cable and manholes of Wan Shing Street;

Ÿ     Rock filling and blinding of Wan Shing Street at Bay 22 was completed;

Ÿ     Excavation and lateral support for DSD receiving pits;

Ÿ     8 out of 12 nos of pre-bored H-pile for box culverts N1 was reached to founding levels as of 20 October 2011;

Ÿ     Re-bar fixing for vent shaft of P7; P8 and P9 pumping station;

Ÿ     Casting of top soffit slab of P7 and P9 pumping station were completed on 4 October 2011; and P8 pumping station were completed on 10 October 2011;

Ÿ     Expo Drive East mass concreting coping formwork erection;

Ÿ     Dismantling and erection of formwork for concrete coping;

Ÿ     Commenced fabricating the steel frames for water diversion and temporary sheet piles walls for WCR2 reclamation;

Ÿ     Installation of temporary sheet pile seawall of WCR-2

Ÿ     Trial panel of the 300mm thick topping slab;

Ÿ     R/F formwork erection and steel fixing of Passenger Terminal Building;

Ÿ     Formwork for lift shaft of Passenger Terminal Building;

Ÿ     Sheet piling for Noise Barrier 2 of Helipad;

Ÿ     Demolition of existing ferry pier;

Ÿ     Dismantling and erection of formwork for concrete coping;

Ÿ     Casting of Expo Drive East mass concreting coping formwork erection of Bays 8 and 9 were completed on 11 November 2011, and Bay 5;

Ÿ     Formwork and rebar fixing for the bus shelter footing at Expo Drive East;

Ÿ     Approximate 50m cooling water pipe was laid at Harbour Centre, Harbour Road, Tonnochy Raod and ex-pet garden;

Ÿ     Approximate 50m cable duct was laid at Harbour Road and Tonnochy Road;

Ÿ     Construction of wash out chamber at Harbour Road and access manhole at Harbour Centre;

Ÿ     Trench excavation and cooling mains installation along Tonnochy Road;

Ÿ     Installation of PVC and G.I cable ducts was ongoing at Harbour Road;

Ÿ     Installation of submarine outfall pipe up to CHA-105 and CHB-130, continue backfilling on the HDPE pipelines;

Ÿ     Dredging for submarine outfall pipe;

Ÿ     Filling up grade 75 to gap between casing sleeves and pile casing of new ferry pier;

Ÿ     Installation of lateral support and excavation for common trench for 132kV cable and manholes of Wan Shing Street;

Ÿ     Rebar fixing of base slab and formwork completed of Wan Shing Street at Bay 22 was completed;

Ÿ     Rock filling and blinding of Wan Shing Street at Bays 23 and 24 were completed on 11 November 2011, and Bay 21 was completed on 18 November 2011;

Ÿ     Base slab of Wan Shing Street at Bays 24;

Ÿ     Excavation and lateral support for DSD receiving pits;

Ÿ     Commence D610 pipe pile wall construction at landside cofferdam of salt water intake culvert;

Ÿ     11 out of 12 nos of pre-bored H-pile for box culverts N1 was casted as of 20 November 2011;

Ÿ     Removal of falsework of P9 was completed on 13 November 2011, and P8 was completed on 19 November 2011;

Ÿ     Fabrication of the steel frames for water diversion and temporary sheet pile walls of WCR2 reclamation commenced; and

Ÿ     Installation of temporary sheet pile seawall of WCR-2

 

  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

September 2011

October 2011

November 2011

Ÿ      Seawall block construction, reclamation work at TS4;

Ÿ      Maintenance dredging of navigation channel and mooring area;

Ÿ      Night time protection works at CHT;

Ÿ      Construction of dewatering well at Hung Hing Road and POC; and

Ÿ      Precautionary works at Abutment A

Ÿ      Seawall block construction, reclamation work and diaphragm wall construction preparation works at TS4;

Ÿ      Maintenance dredging of navigation channel and mooring area; and

Ÿ      Night time protection works at CHT

 

 -       Seawall block construction and reclamation work at TS4;

 -       Dredging works at ME4;

 -       Night time protection works at CHT;

 -       Precautionary works at Abutment A

 

 

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

Table V    Principle Work Activities for Contract no. HK/2010/06

September 2011

October 2011

November 2011

Ÿ      Installation of bored pile casing;

Ÿ      Excavation of bored piles;

Ÿ      Pre-drilling works; and

Ÿ      Installation of temporary staging platforms

Ÿ      Installation of bored pile casing;

Ÿ      Excavation of bored piles;

Ÿ      Pre-drilling works;

Ÿ      Installation of temporary staging platforms

 

Ÿ      Installation of bored pile casing;

Ÿ      Excavation of bored piles;

Ÿ      Concreting of bored piles; and

Ÿ      Pre-drilling works

Ÿ       

 

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 Action and 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             Ten limit level exceedances at M1a on 7, 15 and 20 September, 7, 25 and 31 October, 8, 15 and 21 November 2011 and at M2b   Noon Day Gun Area on 21 November 2011  /span> /span>2011 during the evening time period; and

Ÿ             One Action Level exceedance was recorded due to one recorded noise complaints on 6 November 2011.

 

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 and HY/2009/15.  /span>No project-related exceedance was recorded in the reporting quarter.

 

Air Quality Monitoring

  1. 1hr and 24hr TSP monitoring were conducted at CMA1b, CMA2a, CMA3a, CMA4a, CMA5a and CMA6a in the reporting quarter. No exceedance was recorded during the reporting quarter.
  2. Since the land located the Oil Street Community Liaison Centre was handed-over to Food and Environmental Hygiene Department (FEHD) for the construction of temporary FEHD depot in the end of September 2011, the air monitoring station  CMA1b was then removed and temporary suspended on 18 September 2011. After liaison with FEHD, the permission of the installation of HVS at temporary FEHD depot was obtained from the premises owner in the early of November 2011. 1hr and 24hr TSP monitoring at CMA1b were resumed on 14 November 2011 and 19 November 2011 respectively.

 

  1. The odour patrol along the odour route with 8 sniffing locations was conducted by a qualified odour patrol member on 7, 20 September 2011 at the concerned hours (afternoon for higher daily temperature). The odour intensity detected at 8 locations was found to be from level 0 up to level 1 which were below the Action Level.

 

Water Quality Monitoring

  1. Water quality monitoring was conducted at 18 monitoring stations namely WSD7, WSD9, WSD10, WSD15, WSD17, WSD19, WSD20, WSD 21, C1, C2, C3, C4e, C4w, C5e, C5w, C7, C8 and C9 during the reporting period.

 

  1. Total 3 DO exceedances, 51 turbidity exceedances and 41 SS exceedances were recorded during mid-flood while 5 DO exceedances, 29 turbidity exceedances and 11 SS exceedances were recorded during mid-ebb in the reporting period. Investigations were found that all exceedances are not related to the Project works except project-related exceedances were recorded at C3 and C4w on 10 October and C3 on 12 October 2011. The details of the recorded exceedances can be referred to the Section 5.4.

 

Complaints, Notifications of Summons and Successful Prosecutions

  1. There were four environmental complaints recorded in the reporting quarter. Investigations revealed that the complaints were followed-up and preventive actions were recommended to the Contractor. Details can be referred to the Section 6.0.

 

 

 

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, FEP-04/356/2009 and FEP-05/356/2009 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 September to 27th November 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. HK/2010/06 - Wan Chai Development Phase II-Central-Wan Chai Bypass over MTR Tsuen Wan Line under the Project was commenced on 22 March 2011. 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

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

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

Mr. Lau Yee Ching

9466 3918

Construction Manager

Mr. Jerry Siu

9493 3664

Construction Manager

Mr. Ricky Lai

9487 6549

Construction Manager

Mr. KK Yuen

3498 1213

Environmental Officer (Compliance Manager)

Mr. Andy Mak

9103 2370

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 Manager

Mr. C.P. Ho

3658-3000

Environmental Officer

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. Simon Tang

3557 6358

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 (West)

Mr. Tang Ka Tung

9473 4771

 

 

 

Environmental Manager

Mr. Samuel Tsui

3557 6347

 

 

 

Environmental Officer

Mr. Daniel Sin

3557 6215

 

Gammon

-Leader JV

Contractor under Contract no. HK/2010/06

Manager

Mr. Simon Tong

9124 2471

2529 2880

Site Agent

Mr. Keith Tse

2529 2068

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

September 2011

October 2011

November 2011

Ÿ     Reclamation works;

Ÿ     Geo-textile laying;

Ÿ     Drainage Construction works;

Ÿ     Outfall construction works (Open Channel U);

Ÿ     Sheet Pilling;

Ÿ     Pre-casting of Coping; and

Ÿ     Construction & installation of Seawall Concrete Block

Ÿ     Sheet Pilling;

Ÿ     Geo-textile laying;

Ÿ     Slotted panel fixing;

Ÿ     Reclamation works;

Ÿ     Precasting of Coping;

Ÿ     Drainage Construction works;

Ÿ     Installation of berm blocks;

Ÿ     Construction of FEHD carpark and associated works;

Ÿ     Outfall construction works (Open Channel U); and

Ÿ     Installation of precast concrete blocks at seawall type 6 & 7

Ÿ     Geo-textile laying;

Ÿ     Slotted panel fixing;

Ÿ     Reclamation works;

Ÿ     Installation of Precast Coping;

Ÿ     Drainage Construction works;

Ÿ     Installation of Berm Blocks;

Ÿ     Outfall construction works (Open Channel U); 

Ÿ     Installation of precast concrete blocks at seawall type 6 & 7;

Ÿ     Construction of Seawall Type 8; and

Ÿ     Placing Granite Facing Stone

 

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

September 2011

October 2011

November 2011

Ÿ     Installation of silt screen (type 1) at TST;

Ÿ     Seawall toe block installation for reinstating seawall at Zone B1-3;

Ÿ     Dredging within HKCEC Water Channel from CH160 to CH190 for Type 1 & 2 sediment;

Ÿ     Trench backfilling and seawall reinstatement for both the completed cross-harbour watermains and the seawall near Expo Promenade (Zone B1-3);

Ÿ     Installation of cross-harbour watermains nos. A8 & B8;

Ÿ     Final trimming within Principle Fairway for cross-harbour watermains installation;

Ÿ     Platform erection for crawler crane mobilization near the existing seawall at Salisbury Garden had been completed and WSD’s consent had been given for mobilization of crawler crane to the jack-up barge. Mobilization;

Ÿ     The trench excavation works at Zone B1-4, B4-2, A1-2, A2-4A, A3-3, A4-3B, A4-3B, A4-3C and A5-5;

Ÿ     Trench excavation works at Zone A3-2A;

Ÿ     Excavation for jacking pits for pipe laying works by heading method along Convention Avenue at Zone A1-2A, A1-4A and A2-4A;

Ÿ     Heading No. H2, H5 and H6 (Mainlaying works by trenchless method); and

Ÿ    Trench excavation for a 1000 dia. Watermains at Salisbury Garden

Ÿ     Installation of silt screen (type 3) at TST;

Ÿ     Removal of rock armour at North Bank of HKCECC Water Channel between CH156 and CH185;

Ÿ     Rockfilling for sheet pile water channel from Ch120 to Ch160;

Ÿ     Installation of sheet pile for cooling water intake at Dome Promenade between CH120 and CH160;

Ÿ     Construction of retaining wall (Base Slab) at Zone B1-3;

Ÿ     Construction of precast RC outfall for subsequent seawall reinstatement at Zone B1-3;

Ÿ     Reclamation HKCEC3w (up to Ch110) within HKCEC Water Channel;

Ÿ     Installation of cross harbour watermains nos. A9/B9 and A10;

Ÿ     Thrust block construction for A5B5;

Ÿ     Dredging of Type 2 sediment from Ch50 to CH250 for subsequent cross-harbour watermains installation off Tsim Sha Tsui;

Ÿ     Installation of pipe pile wall at TST landfall section was commenced;

Ÿ     Installation of sheet pile wall for pipe trench dredging at TST;

Ÿ     The trench excavation works at Zone B1-4, B4-2m B4-5m A1-2, A2-4A, A3-3, A3-2A, A4-3B, A4-4C and A5-5;

Ÿ     The trench excavation works at Zone B 4-2 and B4-5;

Ÿ     Heading No H2, H5 and H7 (Mainlaying works by trenchless method);

Ÿ     Tree transplant and its corresponding planter modification at Expo Drive were commenced. Such preparation works was catered for subsequent TTA implementation at the time when Zone B1-6 and B202 was being fenced off for the subsequent mainlaying works; and

Ÿ    Trench excavation and pipe laying works for a 1000 dia. watermains (CHF) at Salisbury Garden

Ÿ     Rock-filling for sheet pile water channel from CH120 to CH160;

Ÿ     Dredging works within HKCEC Water Channel from CH190 to CH260 for Type 1&2 sediment;

Ÿ     Removal of rock armours from CH150 to CH260 at the north bank of HKCEC Water Channel;

Ÿ     Installation of sheet pile for cooling water intake at Dome Promenade between CH120 and CH160;

Ÿ     Pre-cast RC outfall for subsequent seawall reinstatement at Zone B1-3 has been concreted;

Ÿ     Reclamation of HKCEC3W (up to CH110) with in HKCEC Water Channel has been commenced and substantially completed;

Ÿ     Installation of cross-harbor watermains nos. B10, A11/B11, A12/B12 and A13;

Ÿ     Trust block construction for A5B5 was substantially completed;

Ÿ     Dredging of Type 3 sediment from CH50 to Ch250 for subsequent cross-harbor watermains installation off Tsim Sha Tsui;

Ÿ     Installation of pipe pile wall at TST seafront;

Ÿ     Installation of sheet pile wall for pipe trench dredging at TST was substantially completed;

Ÿ     Mainlaying works at Zone B1-4, B4-2, B4-5, A3-3, A3-2A, HKCEC Way In/Out, A4-3B, A2-23B and A5-5;

Ÿ     Reinstatement works at Zone B1-4 and A3-3;

Ÿ     Mainlaying works at Zone A1-2 was substantially completed;

Ÿ     Mainlaying works at Zone HKCEC Way In/Out;

Ÿ     Headind No. H2 was substantially complete;

Ÿ     Heading No. H3, H4, H5 and H7;

Ÿ     Mainlaying works and the subsequent carriageway reinstatement in Zone A4-3C was substantially completed;

Ÿ     Tree transplantation and its corresponding planter modification at Expo Drive; and

Ÿ    Trench excavation and pipe laying works for a 1000 dia. Watermains (CHF) at Salisbury Garden

 

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

September 2011

October 2011

November 2011

Ÿ       Tseung Kwan O public fill sorting facility 18,615.6 m3 sorted fill produced this month.

Ÿ      Steel fixing of Passenger Terminal Building was completed on 8 September 2011;

Ÿ      Demolition of existing ferry pier;

Ÿ      Racking piles and dredging work of Ferry Pier;

Ÿ      Formwork for lift shaft of Passenger Terminal Building;

Ÿ      Fixing G/F to 1/F R.C wall waling on Passenger Terminal Building;

Ÿ      Construction of wash out chamber at Harbour Road and access manhole at Harbour Centre;

Ÿ      Reinstatement work for footpath and existing inspection chamber at Great Eagle Centre;

Ÿ      Trench excavation and deck over works along Tonnochy Road;

Ÿ      Approximate 55m cooling water pipe was laid at Harbour Centre, Harbour Road and ex-pet garden;

Ÿ      Grouting for the cross road pipeline of Harbour Road;

Ÿ      Installation of PVC and G.I cable ducts was ongoing at Harbour Road;

Ÿ      Wall and column construction below -0.8 mPD;

Ÿ      Installation of submarine outfall pipe up to CHA-105 and CHB-130, continue backfill on the HDPE pipelines;

Ÿ      Dredging for submarine outfall pipe;

Ÿ      3 out of 12 nos of pre-bored H-pile for box culverts N1 was reached to founding levels;

Ÿ      1st and 2nd loading test of New Ferry Pier;

Ÿ      Marine piling works for new ferry pier was ongoing. 83 out of 83 nos. marine piles;

Ÿ      Dredging inside the piles was ongoing. 45 out of 83 piles;

Ÿ      Wall and column construction below -0.8 mPD;

Ÿ      Casting of the base slab of WSD Receiving Pit;

Ÿ      Excavation and lateral support for DSD receiving pits;

Ÿ      Half landing slab for P7, P8 & P9 Pumping Stations was completed, top slab false work & formwork erection;

Ÿ      Expo Drive East mass concreting coping formwork erection;

Ÿ      Levelling for proposed bream blocks in progress at Vertical Seawall T4 to T6; and

Ÿ     Commenced fabricating the steel frames for water diversion and temporary sheet piles walls for WCR2 reclamation.

Ÿ     Digging trial pit for bus shelter footing at Expo Drive East;

Ÿ     Fixing up reinforcement for 1/F beam of Passenger Terminal Building;

Ÿ     Erecting formwork of 1/F slab of of Passenger Terminal Building;

Ÿ     Fixing 1/F to 2/F R;C wall waling on Passenger Terminal Building;

Ÿ     Formwork for lift shaft of Passenger Terminal Building;

Ÿ     Demolition of existing ferry pier;

Ÿ     Racking piles and dredging work of Ferry Pier;

Ÿ     Demolition of remaining portion of cover walkway of New Public Toilet;

Ÿ     Construction of wash out chamber at Harbour Road and access manhole at Harbour  Centre;

Ÿ     Reinstatement work for footpath and existing inspection chamber at Great Eagle Centre;

Ÿ     Trench excavation and deck over works along Tonnochy Road;

Ÿ     Installation of PVC and G;I cable ducts was ongoing at Harbour Road;

Ÿ     Approximate 56m cooling water pipe was laid at Harbour Centre; Harbour Road and ex-pet garden;

Ÿ     Installation of submarine outfall pipe up to CHA-105 and CHB-130; continue backfill on the HDPE pipelines;

Ÿ     Dredging for submarine outfall pipe;

Ÿ     Filling up grade 75 to gap between casing sleeves and pile casing of new ferry pier;

Ÿ     3rd and 4th loading test of New Ferry Pier were completed on 26 September 2011 and 11 October 2011;

Ÿ     Grouting plug in piles of New Ferry Pier;

Ÿ     Dredging inside the piles was completed;

Ÿ     Installation of lateral support and excavation for common trench for 132kV cable and manholes of Wan Shing Street;

Ÿ     Rock filling and blinding of Wan Shing Street at Bay 22 was completed;

Ÿ     Excavation and lateral support for DSD receiving pits;

Ÿ     8 out of 12 nos of pre-bored H-pile for box culverts N1 was reached to founding levels as of 20 October 2011;

Ÿ     Re-bar fixing for vent shaft of P7; P8 and P9 pumping station;

Ÿ     Casting of top soffit slab of P7 and P9 pumping station were completed on 4 October 2011; and P8 pumping station were completed on 10 October 2011;

Ÿ     Expo Drive East mass concreting coping formwork erection;

Ÿ     Dismantling and erection of formwork for concrete coping;

Ÿ     Commenced fabricating the steel frames for water diversion and temporary sheet piles walls for WCR2 reclamation;

Ÿ     Installation of temporary sheet pile seawall of WCR-2

Ÿ     Trial panel of the 300mm thick topping slab;

Ÿ     R/F formwork erection and steel fixing of Passenger Terminal Building;

Ÿ     Formwork for lift shaft of Passenger Terminal Building;

Ÿ     Sheet piling for Noise Barrier 2 of Helipad;

Ÿ     Demolition of existing ferry pier;

Ÿ     Dismantling and erection of formwork for concrete coping;

Ÿ     Casting of Expo Drive East mass concreting coping formwork erection of Bays 8 and 9 were completed on 11 November 2011, and Bay 5;

Ÿ     Formwork and rebar fixing for the bus shelter footing at Expo Drive East;

Ÿ     Approximate 50m cooling water pipe was laid at Harbour Centre, Harbour Road, Tonnochy Raod and ex-pet garden;

Ÿ     Approximate 50m cable duct was laid at Harbour Road and Tonnochy Road;

Ÿ     Construction of wash out chamber at Harbour Road and access manhole at Harbour Centre;

Ÿ     Trench excavation and cooling mains installation along Tonnochy Road;

Ÿ     Installation of PVC and G.I cable ducts was ongoing at Harbour Road;

Ÿ     Installation of submarine outfall pipe up to CHA-105 and CHB-130, continue backfilling on the HDPE pipelines;

Ÿ     Dredging for submarine outfall pipe;

Ÿ     Filling up grade 75 to gap between casing sleeves and pile casing of new ferry pier;

Ÿ     Installation of lateral support and excavation for common trench for 132kV cable and manholes of Wan Shing Street;

Ÿ     Rebar fixing of base slab and formwork completed of Wan Shing Street at Bay 22 was completed;

Ÿ     Rock filling and blinding of Wan Shing Street at Bays 23 and 24 were completed on 11 November 2011, and Bay 21 was completed on 18 November 2011;

Ÿ     Base slab of Wan Shing Street at Bays 24;

Ÿ     Excavation and lateral support for DSD receiving pits;

Ÿ     Commence D610 pipe pile wall construction at landside cofferdam of salt water intake culvert;

Ÿ     11 out of 12 nos of pre-bored H-pile for box culverts N1 was casted as of 20 November 2011;

Ÿ     Removal of falsework of P9 was completed on 13 November 2011, and P8 was completed on 19 November 2011;

Ÿ     Fabrication of the steel frames for water diversion and temporary sheet pile walls of WCR2 reclamation commenced; and

Ÿ     Installation of temporary sheet pile seawall of WCR-2

 

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

September 2011

October 2011

November 2011

Ÿ      Seawall block construction, reclamation work at TS4;

Ÿ      Maintenance dredging of navigation channel and mooring area;

Ÿ      Night time protection works at CHT;

Ÿ      Construction of dewatering well at Hung Hing Road and POC; and

Ÿ      Precautionary works at Abutment A

Ÿ      Seawall block construction, reclamation work and diaphragm wall construction preparation works at TS4;

Ÿ      Maintenance dredging of navigation channel and mooring area; and

Ÿ      Night time protection works at CHT

 

 -       Seawall block construction and reclamation work at TS4;

 -       Dredging works at ME4;

 -       Night time protection works at CHT;

 -       Precautionary works at Abutment A

 

 

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

Table 2.8   Principle Work Activities for Contract no. HK/2010/06

September 2011

October 2011

November 2011

Ÿ      Installation of bored pile casing;

Ÿ      Excavation of bored piles;

Ÿ      Pre-drilling works; and

Ÿ      Installation of temporary staging platforms

Ÿ      Installation of bored pile casing;

Ÿ      Excavation of bored piles;

Ÿ      Pre-drilling works;

Ÿ      Installation of temporary staging platforms

 

Ÿ      Installation of bored pile casing;

Ÿ      Excavation of bored piles;

Ÿ      Concreting of bored piles; and

Ÿ      Pre-drilling works

Ÿ       

 

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. 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.

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

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

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

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

 

3.1.7.        Noise baseline level review was commenced in this reporting period. Detailed review report showed in Appendix 3.2.

3.1.8.        Real time noise baseline level review at night time period (2300 to 0700) was commenced in this reporting period. Detailed review report showed in Appendix 3.3.

 

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.

impact monitoring for odour patrol

3.2.5.        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

3.2.6.        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).

3.2.7.        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.

3.2.8.        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.

 

3.2.9.        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.

3.2.10.    The qualified odour patrol member has individual n-butanol thresholds complied with the requirement of European Standard Method of Air Quality  Determination of Odour Concentration by Dynamic Olfactometry (EN13725) in the range of 20 to 80 ppb. The certificate for the qualified odour panel member is shown in Appendix 4.2.

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

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.

 

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.        There was no exceedance recorded in reporting quarter. 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

4.1.3.        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

4.1.4.        Nine limit level exceedances at M1a on 7, 15 and 20 September, 7, 25 and 31 October, 8, 15 and 21 November 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 construction work was complied with the conditions under valid Construction Noise Permit during the measurement.

4.1.5.        One Action Level exceedance was recorded due to one noise complaint on 6 November 2011 in relation to HK/2009/01. Details of noise monitoring results and graphical presentation can be referred in Appendix 4.1.

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.

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

Station

Description

M2b

Noon Gun Area

M3a

Tung Lo Wan Fire Station

 

4.1.7.        One limit level exceedance was recorded at M2b on 21 November 2011 during construction works at evening time for Contract no. HK/2009/02 in reporting quarter.  /span>Details of noise monitoring results and graphical presentation can be referred in Appendix 4.1.

   4.2.          Real Time Noise Monitoring Results

4.2.1          No construction activity was conducted during night time period (2300 to 0700) in this reporting quarter.

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

4.2.2          The proposed division of real time noise monitoring stations are summarized in Table 4.4 below. Real time noise monitoring for the filling 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

 

4.2.3          Real time noise monitoring results were reviewed and no project-related Action and Limit level exceedance were recorded in the reporting period. 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.

4.3.3.        Since the land located the Oil Street Community Liaison Centre was handed-over to Food and Environmental Hygiene Department (FEHD) for the construction of temporary FEHD depot in the end of September 2011, the air monitoring station  CMA1b was then removed and temporary suspended on 18 September 2011 due to not available for the air quality monitoring in the existing location at Oil Street Community Liaison Centre and the rejection or no response from the nearby air sensitive receivers in allowing the implementation of impact air quality monitoring. After liaison with FEHD, the permission of the installation of HVS at temporary FEHD depot was obtained from the premises owner in the early of November 2011. 1hr and 24hr TSP monitoring at CMA1b were resumed on 14 November 2011 and 19 November 2011 respectively.

4.3.4.        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

4.3.5.        Air monitoring was commenced on 1 April 2011 in response to the commencement of the land-filling work for Contract no. HK/2009/01. The proposed division of air monitoring stations are summarized in Table 4.6  below. No exceedance was recorded in the reporting period.

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

4.3.6.        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)

4.3.7.        Air monitoring was commenced on 15 March 2011 for the land filling work for Contract no. HY/2009/15.  /span>The proposed division of air monitoring stations are summarized in Table 4.8 below. No exceedance was recorded in the reporting period.

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

Station

Description

CMA3a

CWB site office at Wanchai Waterfront Promenade

 

4.3.8.        The odour patrol along the odour route with 8 sniffing locations was conducted by a qualified odour patrol member on 7, 20 September 2011 at the concerned hours (afternoon for higher daily temperature). The odour intensity detected at 8 locations was found to be from level 0 up to level 1 which were below the Action Level. The details of the odour patrol results and meteorological conditions and on the date of odour patrol are shown in Appendix 4.2.

4.3.9.        Additional sniffing location, OP2a was conducted for the place where is in the new shoreline of ex-WPCWA (reclamation area) or odour likely detected by the odour patrol member. The odour patrol route and the sniffing locations are shown in Figure 3.1.

 

   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

Remarks:

The water monitoring stations for the dredging works under Contract No. HK/2009/01 should also include WSD9, WSD17, WSD 21 and C5 if water quality monitoring at these locations have not been carried out by others. Similarly, the water monitoring stations for the dredging works under Contract No. HK/2009/02 should also include WSD7, WSD9, WSD17, WSD 19, C1, C2, C3 and C4 if water quality monitoring at these locations have not been carried out by others.

 

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

Remarks:

The water monitoring stations for the dredging works under Contract No. HK/2009/01 should also include WSD9, WSD17, WSD 21 and C5 if water quality monitoring at these locations have not been carried out by others. Similarly, the water monitoring stations for the dredging works under Contract No. HK/2009/02 should also include WSD7, WSD9, WSD17, WSD 19, C1, C2, C3 and C4 if water quality monitoring at these locations has not been carried out by others.

 

Contract no. HK/2010/06 - Wan Chai Development Phase II  Central –Wanchai Bypass over MTR Tsuen Wan Line

4.4.4.        Water monitoring for Contract no. HK/2010/06 was commenced on 8 March 2011. The proposed division of water monitoring stations are summarized in Table 4.12 below.

Table 4.12 Water Monitoring Stations for Contract no. HK/2010/06

Station Ref.

Location

Easting

Northing

Cooling Water Intake

C2

Telecom House

835647.9

815864.4

 

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

4.4.5.        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 4.13 below.

Table 4.13 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

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

4.4.6.        The enhanced water quality monitoring at C6, C7, Ex-WPCWA-SW and Ex-WPCWA-SE was commenced on 13 January 2011. Total 33 Action level and 34 Limit level exceedances of dissolved oxygen level at Causeway Bay Typhoon Shelter and ex-Public Cargo Works Area were recorded.

4.4.7.        During dredging of the sediment at the south-western corner of the Causeway Bay Typhoon Shelter and seawall collapse at Tunnel Section 4, TS4 (within TCBR1W)  /span>between 26 October and 28 November 2011, daily monitoring of suspended solids and 24 hours monitoring of turbidity at the cooling water intakes at C7 was conducted. No project-related exceedance was recorded in the daily SS monitoring and 24 hours turbidity monitoring.

4.4.8.        As per the meeting with the representative of Excelsior Hotel and World Trade Centre on 17 May 2011, they confirmed that the seawater intake for The Excelsior was no longer in use and replaced by the connected permanent water supply from WSD pipelines since 11 January 2011. Thus, the impact water quality monitoring for the cooling intake - C6 was terminated effective from 26 May 2011. 

4.4.9.        Water monitoring results measured in this reporting period are reviewed and summarized in Table 4.14 and Table 4.14a. Details of water quality monitoring results and graphical presentation can be referred in Appendix 4.3.

Table 4.14 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

1

1

0

1

0

0

0

1

0

0

 

WSD15

0

0

1

3

0

6

0

0

2

1

0

1

 

WSD17

0

0

3

2

0

5

0

0

2

0

0

0

 

C8

0

0

4

4

4

0

0

0

7

1

0

0

 

C9

0

0

4

3

1

0

0

0

0

1

0

0

HK/2009/01

WSD19

0

0

1

3

5

2

0

0

1

2

1

1

 

WSD20

0

0

3

4

2

3

0

0

2

1

1

2

 

WSD7

0

0

3

2

0

2

0

0

1

0

1

0

 

C1

0

0

0

0

0

0

0

0

0

0

0

0

 

C3

0

0

0

3

2

1

0

0

1

1

0

1

 

C4e

0

0

0

0

0

0

0

0

0

0

0

0

 

C4w

0

0

0

2

1

0

0

0

0

0

0

0

HK/2009/01

& HK/2010/06

C2

0

0

0

0

0

0

0

0

0

0

0

0

HK/2009/02

C5e

0

0

0

0

0

0

0

0

0

0

0

0

 

C5w

0

0

0

1

1

0

0

0

1

0

1

0

 

WSD21

0

0

0

0

0

2

0

0

2

0

0

0

HY/2009/15

C7

3

0

1

2

3

0

5

0

1

1

2

0

Total

3

0

21

30

19

22

5

0

20

9

6

5

Remarks: -  /span> 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.

 

Table 4.14a   Summary of Enhanced Dissolved Oxygen Monitoring Exceedances in Reporting Quarter

Contract no.

Water Monitoring Station

Mid-flood

Mid-ebb

DO

DO

AL

LL

AL

LL

HY/2009/15

C6

3

2

4

1

C7

6

1

6

2

Ex-WPCWA SW

0

4

2

9

Ex-WPCWA SE

5

7

7

8

Total

14

14

19

20

 

4.4.10.    All exceedances have been investigated and were considered unlikely to be related to project works except project-related exceedances were recorded at C3 and C4w on 10 October and C3 on 12 October 2011. 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.        Non-inert C&D waste was disposed 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. 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

175.5

619.125

 

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

0

 /span>(Bulk Volume)

129,200

 /span>(Bulk Volume)

East of Sha Chau

 

4.5.2.        There was no marine sediment disposed and no dredging work undertaken in the reporting period. Contractor submitted a letter dated 20 July 2011 to confirm that the dredging works and dumping operation were completed.

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

4.5.3.        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/2009/01

Waste Type

Quantity this quarter

Cumulative Quantity-to-Date

Disposal / Dumping Grounds

Inert C&D materials disposed, m3

5,037.85

11,866.6

TKO137

Inert C&D materials recycled, m3

0

389.96

N/A

Non-inert C&D materials disposed, m3

103.34

504.56

 

SENT Landfill

Non-inert C&D materials recycled, kg

10,463

126,921

N/A

Chemical waste disposed, kg

1,300

5,130

N/A

Marine Sediment (Type 1  Open Sea Disposal) , m3

6,912

 /span>(Bulk Volume)

83,482.2

 /span>(Bulk Volume)

South of Cheung Chau

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

5,414

(Bulk Volume)

 

17,730

(Bulk Volume)

 

East of Cha Chau

 

Dredged Sediment Requiring Type 3  Special Treatment / Disposal contained in Geosynthetic Containers

257

(Bulk Volume)

257

(Bulk Volume)

East of Cha Chau

 

4.5.4.        There were marine sediments Type 1  Open Sea Disposal, Type 1  Open Sea Disposal (Dedicate Sites) & Type 2  Confined Marine Disposal and Type 3  Special Treatment / Disposal contained in Geosynthetic Containers disposed in the reporting period. The maximum dredging rate in HKCEC3w and cross harbour water main are 446m3 and 623m3 per day respectively, which were 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

4.5.5.        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. HK/2009/02

Waste Type

Quantity this quarter

Cumulative Quantity-to-Date

Disposal / Dumping Grounds

Inert C&D materials disposed, m3

28,101

53,736

TKO137

Inert C&D materials recycled, m3

NIL

NIL

N/A

Non-inert C&D materials disposed, m3

91

259

SENT Landfill

Non-inert C&D materials recycled, m3

NIL

NIL

N/A

Chemical waste disposed, kg

0

2,115

N/A

Marine Sediment (Type 1  Open Sea Disposal), m3

4,338

(Bulk volume)

154,495

(Bulk Volume)

South of Cheung Chau

 

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

6,242

(Bulk Volume)

110,632

(Bulk Volume)

 

East of Sha Chau

* Remarks: The quantities of the disposed sediments have been further clarified by the Contractor and recorded in the Monthly EM&A Report (Aug 2011). The cumulative quantity of disposed marine sediment Type I and sediment Types I & II in last reporting quarter were 118,779m3 and 94,678m3 respectively.

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 at a maximum dredging rate 640m3 per day, which was complied with the recommended maximum dredging rate per day in 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)

4.5.7.        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 4.18.

Table 4.18 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

48,998.8

58,548.7

Tuen Mun Area 38

507.6

566.3

TKO137 FB

Inert C&D materials recycled, m3

0

184.0

To Contract HY/2009/11

275

304

Ex-PCWA

 

109

109

TS4

Non-inert C&D materials disposed, m3

39.1

143.6

SENT Landfill

 

Non-inert C&D materials recycled, kg

0

13,815

N/A

Chemical waste disposed, kg

3,800

5,800

N/A

Marine Sediment (Type 1  Open Sea Disposal) , m3

5,764

(Bulk Volume)

33,427

 /span>(Bulk Volume)

N/A

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

16,770

(Bulk Volume)

 

158,812

 /span>(Bulk Volume)

 

East of Sha Chau

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

4,300

(Bulk Volume)

 

7,050

(Bulk Volume)

 

East of Sha Chau

 

4.5.8.        There were marine sediments Type 1  Open Sea Disposal, Type 1  Open Sea Disposal (Dedicate Sites) & Type 2  Confined Marine Disposal and Type 3  Special Treatment / Disposal contained in Geosynthetic Containers disposed from the dredging works at TCBR and TPCWA in the reporting period at a maximum dredging rate 1,460m3 per day, which was complied with the recommended maximum dredging rate per day in shoreline zone listed in Table 2 of FEP-04/356/2009.

Contract no. HK/2010/06 - Wan Chai Development Phase II  Central –Wanchai Bypass over MTR Tsuen Wan Line

4.5.9.        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 4.19.

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

Waste Type

Quantity this month

Cumulative Quantity-to-Date

Disposal / Dumping Grounds

Inert C&D materials disposed, m3

3,169.5

3,169.5

Tuen Mun Area 38

Inert C&D materials recycled, m3

NIL

NIL

N/A

Non-inert C&D materials disposed, m3

NIL

NIL

N/A

Non-inert C&D materials recycled, kg

NIL

NIL

N/A

Chemical waste disposed, L

0

600

N/A

Marine Sediment (Type 1  Open Sea Disposal), m3

319

(Bulk Volume)

2,657

(Bulk Volume)

South Cheung Chau

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

344

(Bulk Volume)

11,509

(Bulk Volume)

East Sha Chau

 

4.5.10.    There were marine sediments Type 1  Open Sea Disposal and Type 1  Open Sea Disposal (Dedicate Sites) & Type 2   Confined Marine Disposal dredging from bore-piling casing in the reporting quarter.

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          Nine limit level exceedances at M1a on 7, 15 and 20 September, 7, 25 and 31 October, 8, 15 and 21 November 2011 and during construction works at evening time in reporting quarter. Major noise source at M1a was contributed from Tonnochy Road and water sport competition at Wan Chai Training Swimming Pool. The construction work was complied with the conditions under valid Construction Noise Permit during the measurement.

5.1.2          One limit level exceedance as recorded at M2b  Noon Day Gun Area on 21 November 2011. After checking contractor’s work schedules and investigation found that contractor complied with the requirement in valid CNP.

5.1.3          One Action levels were recorded due to one recorded noise complaints on 6 November 2011

5.2.               Real-time Noise Monitoring

5.2.1          No project-related exceedance was recorded in the real-time noise results in reporting quarter.

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 and Table 5.1a.

Table 5.1  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

1

1

0

1

0

0

0

1

0

0

 

WSD15

0

0

1

3

0

6

0

0

2

1

0

1

 

WSD17

0

0

3

2

0

5

0

0

2

0

0

0

 

C8

0

0

4

4

4

0

0

0

7

1

0

0

 

C9

0

0

4

3

1

0

0

0

0

1

0

0

HK/2009/01

WSD19

0

0

1

3

5

2

0

0

1

2

1

1

 

WSD20

0

0

3

4

2

3

0

0

2

1

1

2

 

WSD7

0

0

3

2

0

2

0

0

1

0

1

0

 

C1

0

0

0

0

0

0

0

0

0

0

0

0

 

C3

0

0

0

3

2

1

0

0

1

1

0

1

 

C4e

0

0

0

0

0

0

0

0

0

0

0

0

 

C4w

0

0

0

2

1

0

0

0

0

0

0

0

HK/2009/01

& HK/2010/06

C2

0

0

0

0

0

0

0

0

0

0

0

0

HK/2009/02

C5e

0

0

0

0

0

0

0

0

0

0

0

0

 

C5w

0

0

0

1

1

0

0

0

1

0

1

0

 

WSD21

0

0

0

0

0

2

0

0

2

0

0

0

HY/2009/15

C7

3

0

1

2

3

0

5

0

1

1

2

0

Total

3

0

21

30

19

22

5

0

20

9

6

5

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.

 

6.4.1.        All exceedances in Table 5.1 have been investigated and only the turbidity and/or SS exceedances recorded at C3 on 10 and 12 October and at C4w on 10 October 2011 were considered likely to be related to project works.

6.4.2.        Checking with Contractor works, there were filling at HKCEC3W and rock bund filling works along the promenade deck which was carried out to facilitate subsequent sheet piling works on that day. The frame type silt screen at intake, frame type silt curtain for rock-filling and additional silt curtain along the promenade deck were deployed. Other than that, Contractor's daily records were checked. It shows silt curtains were deployed during filling works and both silt curtains were in proper condition in their daily inspection.

6.4.3.        According to contractor provided information, same grade of filling materials were used for filling works during June to August 2011, no exceedance was recorded that was related to filling at that time. Nevertheless, Contractor was reminded to open the grab used for rock bund filling at lower level so as to avoid any loose materials spreading out of silt curtain and enter into the water body. Contractor has implemented the mitigation measures to replace the geotextile and add additional 20m long silt curtain at promenade deck on 13 Oct 2011 to minimize the water quality impact arising from the rock-filling. After reviewing the trend of water quality data, the remedial measures have function effectively and no further exceedance was recorded the week after the exceedance.

 

Table 5.1a    Summary of Enhanced Dissolved Oxygen Monitoring Exceedances in Reporting Quarter

Contract no.

Water Monitoring Station

Mid-flood

Mid-ebb

DO

DO

AL

LL

AL

LL

HY/2009/15

C6

3

2

4

1

C7

6

1

6

2

Ex-WPCWA SW

0

4

2

9

Ex-WPCWA SE

5

7

7

8

Total

14

14

19

20

 

5.4.2.        All exceedances in Table 5.1a have been investigated and were considered unlikely to be related to project works. The low DO levels were possible in relation to the low flow and recorded low water depth. In view that no odour nuisance was detected during monitoring, the DO exceedances were considered not related to the Project. With reference to the odour patrol results on 7 and 20 September 2011, the detected odour intensity at ex- WPCWA and Causeway Bay Typhoon Shelter was found to be from level 0 up to level 1 which were below the Action Level. These DO exceedances were considered as the natural variation and not related to the Project works.

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.

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

5.6.1          The turbidity and/or SS exceedances recorded at C3 on 10 and 12 October and at C4w on 10 October 2011 were recorded when filling at HKCEC3W and rock bund filling works were conducted along the promenade deck on that day. Proper condition of the silt screens and silt curtains were deployed. Nevertheless, Contractor was reminded to open the grab used for rock bund filling at lower level so as to avoid any loose materials spreading out of silt curtain and enter into the water body.

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

5.7.1          When the project-related exceedances were recorded at C3 and C4w on 10 October and C3 on 12 October 2011, repeated in-situ measurement and additional turbidity measurement were immediately taken outside the silt screen when the Action Level or Limit Level exceedance was recorded inside the silt screen for checking of relation from the rock filling works.

5.7.2          Contractor has implemented the mitigation measures to replace the geotextile near the water monitoring station C3 and add additional 20m long silt curtain at promenade deck on 13 Oct 2011 to minimize the water quality impact arising from the rock-filling. Diver inspection on the silt screen and silt curtain was conducted on 14 October 2011. After reviewing the trend of water quality data, the remedial measures have function effectively and no further exceedance was recorded the week after the Project-related exceedance.

6.     Complaints, Notification of Summons and Prosecution

6.0.1.        There were four environmental complaints received in this quarter.

6.0.2.        A water impact complaint was received by ET on 29 August 2011. It was complained by Mr. Au from Cayley Property Management Limited (CPML) that large amount of rubbishes were found at the harbour front adjacent to their cooling water intake suction which caused 3 times of system breakdown of the sea water pump on 9, 22 and 25 August 2011 after the contractors set up the temporary garbage defender in function and collect the floating refuses, but cannot eliminate all refuses, in particular the refuse coming from the seabed. An ad-hoc inspection of the effectiveness of garbage defender was conducted with RSS (CWB project team), contractors of HY/200911 and HY/2009/19, ET and IEC on 29 August 2011.

6.0.3.        During on-site inspection, floating refuses were observed occasionally outside the garbage defender. No conclusion could be made for the source of these floating refuses. On the other hand, some of the refuses were observed floating behind the garbage defender during investigation. All daily cleaning actions had been taken by contractor to minimize floating refuse inside the construction site. It was noted that the cooling water intake was accessible to the public. As such, fish breeding and fishing activities were observed even though a notice has already hoisted. Also, tripping of rubbish by the passers-by could result in a lot of rubbish accumulated around the intake point. Referring to the record provided by CPML, there were a lot of nylon/ plastic bags and nylon wire mesh that matched those rubbishes generated from the public activities. The contractors were reminded to strengthen the communication with City Garden and no further complaint from complainant was received after proposed the mitigation measure.

6.0.4.        The complainant, Ms. Tam complained via hotline 1823 about the polluted fumes and exhaust from the excavation by sub-contractor of CEDD on pedestrian way outside no.25 Harbour Road (in front of the Harbour Centre). RSS notified ET to carry out investigation on 17 October 2011.

6.0.5.        The location of the excavator was within site area of Contract no. HK/2009/02 undertaking the water cooling main re-provision works along the Harbour Road. The plants including the excavator have been checked before using at the site. However, the polluted fumes and exhausted from the excavator was caused due to insufficient maintenance of the plant after using at site. After receiving the complaint, the excavator was then removal off-site for checking and maintenance works on 17 October 2011. Contractor was reminded to enhance regular checking and maintenance to all plants at site. RSS has replied to the complainant on the arrangement of the measures taken on 17 October 2011. Complainant was satisfied with the response and follow-up action taken by the Contractor.

6.0.6.        The complainant, Mr. Liu from LCSD complained via Contractor Complaint Hotline on 4 November 2011 about a tree near the site of pipe installation works outside Wan Chai Swimming Pool at Harbour Road, the status is not healthy and roof ball of two trees inside the site near Renaissance Hong Kong Harbour View Hotel at Convention Avenue were half cut.

6.0.7.        A tree near the site of pipe installation works outside Wan Chai Swimming Pool at Harbour Road is confirmed that is the Tree no. TA1122 under Contract no. HK/2009/02. Leaves of a branch of this tree were shrivelled. Another two trees inside the site near Renaissance Hong Kong Harbour View Hotel at Convention Avenue are the tree nos. A160 and A161 under Contract no. HK/2009/01. Part of roof ball of these two trees was covered by the metal plate.

6.0.8.        Independent Tree Specialists for these two inspected the trees. Contractor HK/2009/01 has taken the measure as recommend downgrading the soil level around the trunk base. Reinstating of the ground works will be conducted in mid-December 2011. For the tree no. TA1122 under Contract no. HK/2009/02, the brown leaves were removed and fenced the tree with orange net is provided to prevent damage of tree trunk by construction works. The distance between the tree and the edge of the trench is kept approximate 2m. Two Contractors were reminded to carry out regular watering to the trees within their site area.

6.0.9.        A noise complaint was received by Police Officer and a police officer arrived to Contract HK/2009/01 site at about 6:30 a.m. on 6 November 2011 to inspect noise generated from the site and stop the existed machines operation. The subcontractor for Diaphragm wall, SAMBO Korean foreman stopped the engine of the BC cutter immediately. The police officer recorded the details and HKID number of the foreman and then left. Due to the different language communication between the police officer and the Korean foreman, no CNP was checked by the police officer.

6.0.10.    According to the information reported by Contractor, one BC cutter and a hoist were operated for inspecting all bentonite pipes were in good condition and all joints were tightened in good position for Diaphragm Wall construction of Shatin-Central Link. Due to insufficient communication between Contractor HK/2009/01 and their Korean Sub-contractor, Korean Sub-contractor had not notified to Contractor of HK/2009/01 and then started to carry out the inspection of the BC cutter, hoists and bentonite pipes at 6:00a.m to ensure no damages and all the pipe joints in good position.

6.0.11.    As such, the Contractor HK/2009/01 was reminded to enhance the communication between Contractor and sub-contractor, and construction Noise Permit should be checked and in place for the construction works during restricted hour, plus providing environmental training to all foreman and operators on restricted hour operation.

6.0.12.    The complaint was considered in relation to the construction works during restricted hours without valid Construction Noise Permit. No more construction works were conducted during night time period. The construction works will be conducted in accordance with the time period stated in valid CNP. This complaint will be kept in view of any follow-up action from the relevant government activities.

6.0.13.    The details of cumulative complaint log and summary of complaints are presented in Appendix 6.1.

6.0.14.    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

Commencement works (Mar 2010) to last reporting quarter

21

Sep - Nov 2011

4

Project-to-Date

25

 

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

 

6.0.15.    There was an incident of the leakage of Type III sediment Geosynthetic Container under Contract HK/2009/01 on 28 October 2011. 3 nos. of Type III geosynthetic container containing the Type III sediment dredged from Tsim Sha Tsui side of cross harbour watermains near the Avenue of Starts and Wan Chai Hong Kong Convention and Exhibition Centre (HKCEC) water channel were executed and disposed to East Sha Chau Contaminated Mud Disposal Site  Pit IVc. The preplaced PVC spheres were observed to be floating near the stern of the hopper barge after the geosynthetic containers were completely sunk into the sea.

6.0.16.    Based on the investigation result, the suspected causal factors of the incident are listed below.

 -           The seaming work of the 3rd geosynthetic container was conducted at night time on 27 October 2011. Insufficient light might have affected the quality of seaming work.

 -           The anti-leakage component at the bottom gate of hopper barge might have interfered the geosynthetic container during dumping operation. The surface of geosynthetic container contacted the bottom edge closely while it was squeezed out through the bottom gate. The steel plate with bolts and nuts might have caused local damage to the geosynthetic container.

6.0.17.    To prevent reoccurrence of the incident, Contractor HK/2009/01 has the following enhancements are recommended.

 -           To eliminate the potential risk of workmanship caused by insufficient light, all the seaming work of geosynthetic container will be carried out at day time (before 1800). Supervision will be enhanced by increasing checking frequency.

 -           To eliminate the potential risk of damaging the geosynthetic container during dumping operation, an additional steel rod to be welded on top of the steel plate for fixing rubber seal at bottom gate of hopper barge.

 -           Dumping operation of Type 3 sediment is suspended until investigation report and preventive measures are submitted and agreed by EPD.

6.0.18.    A seawall blocks collapsing incident was occurred at Tunnel Section 4, TS4 (within TCBR1W) under Contractor of HY/2009/15 at around 8:45 on 17 November 2011. An immediate site inspection on the incident location was conducted at 11:30 on that day so as to assess the potential water quality impact with respect to the collapsed seawall and any further impact towards the nearby intake at Windsor House (C7). Initial recommendations were provided to RSS on the formulation of rectification plan to re-establish the seawall at on the same day. Contractor of HY/2009/15 was drawn attention about the incident, highlighting the concern on EP/FEP compliance and urged stop the filling operation.

6.0.19.    After the incident occurred, double-layer silt curtain was then enclosed the collapse edge to limit the potential dispersion of the unprotected edge.  Grab dredger was immediately deployed to start removing the collapsed seawall blocks. Total 45 out of 62 seawall blocks were removal from seabed until 25 November 2011. The 24-hour turbidity monitoring data and daily SS monitoring at C7 on the incident date onwards were reviewed and no immediate impact on water quality was observed from the data trend. The details of the data trend are enclosed in Appendix 4.3.  /span>

6.0.20.    It is anticipated that the removal of collapsed seawall blocks will be completed and a detailed diver inspection together with independent hydrographic survey will be conducted in December 2011. Follow-up action will be taken and reported in the coming Monthly EM&A reports.

 

 

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 at Reclamation Shoreline Sub-zones under Wan Chai Development Phase II were the filling works at NPR2E and HKCEC1, dredging and filling at HKCEC3w, dredging at submarine sewage pipelines, seawall block construction at TCBR1W, maintenance dredging of navigation channel and mooring area, HKCEC3w and marine bored piling at MTR Tunnel Crossing in the reporting quarter. The major environmental impact was water quality impact at North Point, Causeway Bay 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 while the adverse water impact was only located in the HKCEC water channel in relation to the rock filling operation causing exceedances in HKCEC water channel in this reporting quarter. Thus, it was unlikely to have cumulative impact from 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.