Contract No:
HK/2009/05 Wanchai Development Phase II and 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 -
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CLIENTS: |
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Civil Engineering and
Development Department and Highways Department |
Lam Geotechnics Limited 11/F Centre Point Wanchai,
H.K. Telephone: (852) 2882-3939 Facsimile: (852) 2882-3331 E-mail: info@lamenviro.com Website: http://www.lamenviro.com |
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CHECKED
by: |
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                         Raymond Dai Environmental Team Leader |
|
DATE: |
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4 January 2012 |
1.1    Scope
of the Report
1.2    Structure
of the Report
2.   Project
Background
2.1    Background
2.2    Scope of the Project and Site Description
2.3    Division
of the Project Responsibility
2.4    Project
Organization and Contact Personnel
2.5    Principle Work and Activities
3.   Monitoring
Requirements
3.1.    Noise
Monitoring
3.2.    Air
Monitoring
3.3.    Water
Quality Monitoring
4.   Monitoring
Results
4.1.    Noise
Monitoring Results
4.2.    Real Time Noise
Monitoring Results
4.3.    Air
Monitoring Results
4.4.    Water
Monitoring Results
4.5.    Waste
Monitoring Results
5.1.    Noise
Monitoring
5.2.    Real-time Noise Monitoring
5.3.    Air
Monitoring
5.4.    Water
Quality Monitoring
5.5.    Site
Audit
5.6.    Review of the Reasons for and the Implications of
Non-compliance
5.7.    Summary of action taken in the event of and follow-up
on non-compliance
6.   Complaints,
Notification of Summons and Prosecution
7.   Cumulative
Construction Impact due to the Concurrent Projects
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 4.15    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 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
Construction Activities for the Reported
Period
Table I     Principle Work Activities for Contract no. HY/2009/11
September 2011 |
October 2011 |
November 2011 |
Reclamation works;
Geo-textile laying;
Drainage Construction works;
Outfall construction works (Open
Channel U);
Sheet Pilling;
Pre-casting of Coping; and
Construction & installation
of Seawall Concrete Block |
Sheet Pilling;
Geo-textile laying;
Slotted panel fixing;
Reclamation works;
Precasting of Coping;
Drainage Construction works;
Installation of berm blocks;
Construction of FEHD carpark and
associated works;
Outfall construction works (Open
Channel U); and
Installation of precast concrete
blocks at seawall type 6 & 7 |
Geo-textile laying;
Slotted panel fixing;
Reclamation works;
Installation of Precast Coping;
Drainage Construction works;
Installation of Berm Blocks;
Outfall construction works (Open
Channel U); 
Installation of precast concrete
blocks at seawall type 6 & 7;
Construction of Seawall Type 8;
and
Placing Granite Facing Stone |
Table II    Principle Work Activities for Contract no. HK/2009/01
September 2011 |
October 2011 |
November 2011 |
Installation of silt screen
(type 1) at TST;
Seawall toe block installation
for reinstating seawall at Zone B1-3;
Dredging within HKCEC Water Channel
from CH160 to CH190 for Type 1 & 2 sediment;
Trench backfilling and seawall
reinstatement for both the completed cross-harbour watermains and the seawall
near Expo Promenade (Zone B1-3);
Installation of cross-harbour
watermains nos. A8 & B8;
Final trimming within Principle
Fairway for cross-harbour watermains installation;
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;
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;
Trench excavation works at Zone
A3-2A;
Excavation for jacking pits for
pipe laying works by heading method along Convention Avenue at Zone A1-2A,
A1-4A and A2-4A;
Heading No. H2, H5 and H6
(Mainlaying works by trenchless method); and Trench
excavation for a 1000 dia. Watermains at Salisbury Garden |
Installation of silt screen
(type 3) at TST;
Removal of rock armour at North
Bank of HKCECC Water Channel between CH156 and CH185;
Rockfilling for sheet pile water
channel from Ch120 to Ch160;
Installation of sheet pile for
cooling water intake at Dome Promenade between CH120 and CH160;
Construction of retaining wall
(Base Slab) at Zone B1-3;
Construction of precast RC
outfall for subsequent seawall reinstatement at Zone B1-3;
Reclamation HKCEC3w (up to
Ch110) within HKCEC Water Channel;
Installation of cross harbour
watermains nos. A9/B9 and A10;
Thrust block construction for
A5B5;
Dredging of Type 2 sediment from
Ch50 to CH250 for subsequent cross-harbour watermains installation off Tsim
Sha Tsui;
Installation of pipe pile wall
at TST landfall section was commenced;
Installation of sheet pile wall
for pipe trench dredging at TST;
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;
The trench excavation works at
Zone B 4-2 and B4-5;
Heading No H2, H5 and H7
(Mainlaying works by trenchless method);
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 Trench
excavation and pipe laying works for a 1000 dia. watermains (CHF) at
Salisbury Garden |
Rock-filling for sheet pile
water channel from CH120 to CH160;
Dredging works within HKCEC
Water Channel from CH190 to CH260 for Type 1&2 sediment;
Removal of rock armours from
CH150 to CH260 at the north bank of HKCEC Water Channel;
Installation of sheet pile for
cooling water intake at Dome Promenade between CH120 and CH160;
Pre-cast RC outfall for
subsequent seawall reinstatement at Zone B1-3 has been concreted;
Reclamation of HKCEC3W (up to
CH110) with in HKCEC Water Channel has been commenced and substantially
completed;
Installation of cross-harbor
watermains nos. B10, A11/B11, A12/B12 and A13;
Trust block construction for
A5B5 was substantially completed;
Dredging of Type 3 sediment from
CH50 to Ch250 for subsequent cross-harbor watermains installation off Tsim
Sha Tsui;
Installation of pipe pile wall
at TST seafront;
Installation of sheet pile wall
for pipe trench dredging at TST was substantially completed;
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;
Reinstatement works at Zone B1-4
and A3-3;
Mainlaying works at Zone A1-2
was substantially completed;
Mainlaying works at Zone HKCEC
Way In/Out;
Headind No. H2 was substantially
complete;
Heading No. H3, H4, H5 and H7;
Mainlaying works and the
subsequent carriageway reinstatement in Zone A4-3C was substantially
completed;
Tree transplantation and its
corresponding planter modification at Expo Drive; and Trench
excavation and pipe laying works for a 1000 dia. Watermains (CHF) at
Salisbury Garden |
Table III    Principle Work Activities for Contract no. HK/2009/02
September 2011 |
October 2011 |
November 2011 |
Tseung
Kwan O public fill sorting facility
Steel fixing of Passenger
Terminal Building was completed on 8 September 2011;
Demolition of existing ferry
pier;
Racking piles and dredging work
of Ferry Pier;
Formwork for lift shaft of
Passenger Terminal Building;
Fixing G/F to 1/F R.C wall
waling on Passenger Terminal Building;
Construction of wash out chamber
at Harbour Road and access manhole at Harbour Centre;
Reinstatement work for footpath
and existing inspection chamber at Great Eagle Centre;
Trench excavation and deck over
works along Tonnochy Road;
Approximate
Grouting for the cross road
pipeline of Harbour Road;
Installation of PVC and G.I
cable ducts was ongoing at Harbour Road;
Wall and column construction
below -0.8 mPD;
Installation of submarine
outfall pipe up to CHA-105 and CHB-130, continue backfill on the HDPE
pipelines;
Dredging for submarine outfall pipe;
3 out of 12 nos of pre-bored
H-pile for box culverts N1 was reached to founding levels;
1st and 2nd loading test of New
Ferry Pier;
Marine piling works for new
ferry pier was ongoing. 83 out of 83 nos. marine piles;
Dredging inside the piles was
ongoing. 45 out of 83 piles;
Wall and column construction
below -0.8 mPD;
Casting of the base slab of WSD
Receiving Pit;
Excavation and lateral support
for DSD receiving pits;
Half landing slab for P7, P8
& P9 Pumping Stations was completed, top slab false work & formwork
erection;
Expo Drive East mass concreting
coping formwork erection;
Levelling for proposed bream
blocks in progress at Vertical Seawall T4 to T6; and Commenced
fabricating the steel frames for water diversion and temporary sheet piles
walls for WCR2 reclamation. |
Digging trial pit for bus
shelter footing at Expo Drive East;
Fixing up reinforcement for 1/F
beam of Passenger Terminal Building;
Erecting formwork of 1/F slab of
of Passenger Terminal Building;
Fixing 1/F to 2/F R;C wall
waling on Passenger Terminal Building;
Formwork for lift shaft of
Passenger Terminal Building;
Demolition of existing ferry
pier;
Racking piles and dredging work
of Ferry Pier;
Demolition of remaining portion
of cover walkway of New Public Toilet;
Construction of wash out chamber
at Harbour Road and access manhole at Harbour 
Centre;
Reinstatement work for footpath
and existing inspection chamber at Great Eagle Centre;
Trench excavation and deck over
works along Tonnochy Road;
Installation of PVC and G;I
cable ducts was ongoing at Harbour Road;
Approximate
Installation of submarine
outfall pipe up to CHA-105 and CHB-130; continue backfill on the HDPE
pipelines;
Dredging for submarine outfall
pipe;
Filling up grade 75 to gap
between casing sleeves and pile casing of new ferry pier;
3rd and 4th loading test of New
Ferry Pier were completed on 26 September 2011 and 11 October 2011;
Grouting plug in piles of New
Ferry Pier;
Dredging inside the piles was
completed;
Installation of lateral support
and excavation for common trench for 132kV cable and manholes of Wan Shing
Street;
Rock filling and blinding of Wan
Shing Street at Bay 22 was completed;
Excavation and lateral support
for DSD receiving pits;
8 out of 12 nos of pre-bored
H-pile for box culverts N1 was reached to founding levels as of 20 October
2011;
Re-bar fixing for vent shaft of
P7; P8 and P9 pumping station;
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;
Expo Drive East mass concreting
coping formwork erection;
Dismantling and erection of
formwork for concrete coping;
Commenced fabricating the steel
frames for water diversion and temporary sheet piles walls for WCR2
reclamation;
Installation of temporary sheet
pile seawall of WCR-2 |
Trial panel of the 300mm thick
topping slab;
R/F formwork erection and steel
fixing of Passenger Terminal Building;
Formwork for lift shaft of
Passenger Terminal Building;
Sheet piling for Noise Barrier 2
of Helipad;
Demolition of existing ferry
pier;
Dismantling and erection of
formwork for concrete coping;
Casting of Expo Drive East mass
concreting coping formwork erection of Bays 8 and 9 were completed on 11
November 2011, and Bay 5;
Formwork and rebar fixing for
the bus shelter footing at Expo Drive East;
Approximate 50m cooling water
pipe was laid at Harbour Centre, Harbour Road, Tonnochy Raod and ex-pet
garden;
Approximate
Construction of wash out chamber
at Harbour Road and access manhole at Harbour Centre;
Trench excavation and cooling
mains installation along Tonnochy Road;
Installation of PVC and G.I
cable ducts was ongoing at Harbour Road;
Installation of submarine
outfall pipe up to CHA-105 and CHB-130, continue backfilling on the HDPE
pipelines;
Dredging for submarine outfall
pipe;
Filling up grade 75 to gap
between casing sleeves and pile casing of new ferry pier;
Installation of lateral support
and excavation for common trench for 132kV cable and manholes of Wan Shing
Street;
Rebar fixing of base slab and
formwork completed of Wan Shing Street at Bay 22 was completed;
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;
Base slab of Wan Shing Street at
Bays 24;
Excavation and lateral support
for DSD receiving pits;
Commence D610 pipe pile wall
construction at landside cofferdam of salt water intake culvert;
11 out of 12 nos of pre-bored
H-pile for box culverts N1 was casted as of 20 November 2011;
Removal of falsework of P9 was
completed on 13 November 2011, and P8 was completed on 19 November 2011;
Fabrication of the steel frames
for water diversion and temporary sheet pile walls of WCR2 reclamation
commenced; and
Installation of temporary sheet
pile seawall of WCR-2 |
Table IV    Principle
Work Activities for Contract no. HY/2009/15
September 2011 |
October 2011 |
November 2011 |
Seawall block construction,
reclamation work at TS4; Maintenance
dredging of navigation channel and mooring area;
Night time protection works at
CHT;
Construction of dewatering well
at Hung Hing Road and POC; and
Precautionary works at Abutment
A |
Seawall block construction,
reclamation work and diaphragm wall construction preparation works at TS4;
Maintenance dredging of
navigation channel and mooring area; and
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 |
Table V    Principle
Work Activities for Contract no. HK/2010/06
September 2011 |
October 2011 |
November 2011 |
Installation of bored pile
casing;
Excavation of bored piles;
Pre-drilling works; and
Installation of temporary
staging platforms |
Installation of bored pile
casing;
Excavation of bored piles;
Pre-drilling works;
Installation of temporary
staging platforms |
Installation of bored pile
casing;
Excavation of bored piles;
Concreting of bored piles; and
Pre-drilling works
|
Noise Monitoring
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
One Action Level exceedance was
recorded due to one recorded noise
complaints on 6 November 2011.
Real-time Noise Monitoring
Air Quality Monitoring
Water Quality Monitoring
Complaints, Notifications of Summons and
Successful Prosecutions
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.
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
2.1.1.
“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.
2.2.1.
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 |
2.3.1.
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 |
2.4.1.
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 |
2.5.1.
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 |
Reclamation works;
Geo-textile laying;
Drainage Construction works;
Outfall construction works (Open
Channel U);
Sheet Pilling;
Pre-casting of Coping; and
Construction & installation
of Seawall Concrete Block |
Sheet Pilling;
Geo-textile laying;
Slotted panel fixing;
Reclamation works;
Precasting of Coping;
Drainage Construction works;
Installation of berm blocks;
Construction of FEHD carpark and
associated works;
Outfall construction works (Open
Channel U); and
Installation of precast concrete
blocks at seawall type 6 & 7 |
Geo-textile laying;
Slotted panel fixing;
Reclamation works;
Installation of Precast Coping;
Drainage Construction works;
Installation of Berm Blocks;
Outfall construction works (Open
Channel U); 
Installation of precast concrete
blocks at seawall type 6 & 7;
Construction of Seawall Type 8;
and
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 |
Installation of silt screen
(type 1) at TST;
Seawall toe block installation
for reinstating seawall at Zone B1-3;
Dredging within HKCEC Water
Channel from CH160 to CH190 for Type 1 & 2 sediment;
Trench backfilling and seawall
reinstatement for both the completed cross-harbour watermains and the seawall
near Expo Promenade (Zone B1-3);
Installation of cross-harbour
watermains nos. A8 & B8;
Final trimming within Principle
Fairway for cross-harbour watermains installation;
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;
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;
Trench excavation works at Zone
A3-2A;
Excavation for jacking pits for
pipe laying works by heading method along Convention Avenue at Zone A1-2A,
A1-4A and A2-4A;
Heading No. H2, H5 and H6
(Mainlaying works by trenchless method); and
Trench excavation for a 1000
dia. Watermains at Salisbury Garden |
Installation of silt screen
(type 3) at TST;
Removal of rock armour at North
Bank of HKCECC Water Channel between CH156 and CH185;
Rockfilling for sheet pile water
channel from Ch120 to Ch160;
Installation of sheet pile for
cooling water intake at Dome Promenade between CH120 and CH160;
Construction of retaining wall
(Base Slab) at Zone B1-3;
Construction of precast RC
outfall for subsequent seawall reinstatement at Zone B1-3;
Reclamation HKCEC3w (up to
Ch110) within HKCEC Water Channel;
Installation of cross harbour
watermains nos. A9/B9 and A10;
Thrust block construction for
A5B5;
Dredging of Type 2 sediment from
Ch50 to CH250 for subsequent cross-harbour watermains installation off Tsim
Sha Tsui;
Installation of pipe pile wall
at TST landfall section was commenced;
Installation of sheet pile wall
for pipe trench dredging at TST;
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;
The trench excavation works at
Zone B 4-2 and B4-5;
Heading No H2, H5 and H7
(Mainlaying works by trenchless method);
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
Trench excavation and pipe
laying works for a 1000 dia. watermains (CHF) at Salisbury Garden |
Rock-filling for sheet pile
water channel from CH120 to CH160;
Dredging works within HKCEC
Water Channel from CH190 to CH260 for Type 1&2 sediment;
Removal of rock armours from
CH150 to CH260 at the north bank of HKCEC Water Channel;
Installation of sheet pile for
cooling water intake at Dome Promenade between CH120 and CH160;
Pre-cast RC outfall for
subsequent seawall reinstatement at Zone B1-3 has been concreted;
Reclamation of HKCEC3W (up to
CH110) with in HKCEC Water Channel has been commenced and substantially
completed;
Installation of cross-harbor
watermains nos. B10, A11/B11, A12/B12 and A13;
Trust block construction for
A5B5 was substantially completed;
Dredging of Type 3 sediment from
CH50 to Ch250 for subsequent cross-harbor watermains installation off Tsim
Sha Tsui;
Installation of pipe pile wall
at TST seafront;
Installation of sheet pile wall
for pipe trench dredging at TST was substantially completed;
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;
Reinstatement works at Zone B1-4
and A3-3;
Mainlaying works at Zone A1-2
was substantially completed;
Mainlaying works at Zone HKCEC
Way In/Out;
Headind No. H2 was substantially
complete;
Heading No. H3, H4, H5 and H7;
Mainlaying works and the
subsequent carriageway reinstatement in Zone A4-3C was substantially
completed;
Tree transplantation and its
corresponding planter modification at Expo Drive; and
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 |
Tseung Kwan O public fill
sorting facility
Steel fixing of Passenger
Terminal Building was completed on 8 September 2011;
Demolition of existing ferry
pier;
Racking piles and dredging work
of Ferry Pier;
Formwork for lift shaft of
Passenger Terminal Building;
Fixing G/F to 1/F R.C wall
waling on Passenger Terminal Building;
Construction of wash out chamber
at Harbour Road and access manhole at Harbour Centre;
Reinstatement work for footpath
and existing inspection chamber at Great Eagle Centre;
Trench excavation and deck over
works along Tonnochy Road;
Approximate
Grouting for the cross road
pipeline of Harbour Road;
Installation of PVC and G.I
cable ducts was ongoing at Harbour Road;
Wall and column construction
below -0.8 mPD;
Installation of submarine
outfall pipe up to CHA-105 and CHB-130, continue backfill on the HDPE
pipelines;
Dredging for submarine outfall
pipe;
3 out of 12 nos of pre-bored
H-pile for box culverts N1 was reached to founding levels;
1st and 2nd loading test of New
Ferry Pier;
Marine piling works for new
ferry pier was ongoing. 83 out of 83 nos. marine piles;
Dredging inside the piles was
ongoing. 45 out of 83 piles;
Wall and column construction
below -0.8 mPD;
Casting of the base slab of WSD
Receiving Pit;
Excavation and lateral support
for DSD receiving pits;
Half landing slab for P7, P8
& P9 Pumping Stations was completed, top slab false work & formwork
erection;
Expo Drive East mass concreting
coping formwork erection;
Levelling for proposed bream
blocks in progress at Vertical Seawall T4 to T6; and Commenced
fabricating the steel frames for water diversion and temporary sheet piles
walls for WCR2 reclamation. |
Digging trial pit for bus
shelter footing at Expo Drive East;
Fixing up reinforcement for 1/F
beam of Passenger Terminal Building;
Erecting formwork of 1/F slab of
of Passenger Terminal Building;
Fixing 1/F to 2/F R;C wall
waling on Passenger Terminal Building;
Formwork for lift shaft of
Passenger Terminal Building;
Demolition of existing ferry
pier;
Racking piles and dredging work
of Ferry Pier;
Demolition of remaining portion
of cover walkway of New Public Toilet;
Construction of wash out chamber
at Harbour Road and access manhole at Harbour 
Centre;
Reinstatement work for footpath
and existing inspection chamber at Great Eagle Centre;
Trench excavation and deck over
works along Tonnochy Road;
Installation of PVC and G;I
cable ducts was ongoing at Harbour Road;
Approximate
Installation of submarine
outfall pipe up to CHA-105 and CHB-130; continue backfill on the HDPE
pipelines;
Dredging for submarine outfall
pipe;
Filling up grade 75 to gap
between casing sleeves and pile casing of new ferry pier;
3rd and 4th loading test of New
Ferry Pier were completed on 26 September 2011 and 11 October 2011;
Grouting plug in piles of New
Ferry Pier;
Dredging inside the piles was
completed;
Installation of lateral support
and excavation for common trench for 132kV cable and manholes of Wan Shing
Street;
Rock filling and blinding of Wan
Shing Street at Bay 22 was completed;
Excavation and lateral support
for DSD receiving pits;
8 out of 12 nos of pre-bored
H-pile for box culverts N1 was reached to founding levels as of 20 October
2011;
Re-bar fixing for vent shaft of
P7; P8 and P9 pumping station;
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;
Expo Drive East mass concreting
coping formwork erection;
Dismantling and erection of
formwork for concrete coping;
Commenced fabricating the steel
frames for water diversion and temporary sheet piles walls for WCR2
reclamation;
Installation of temporary sheet
pile seawall of WCR-2 |
Trial panel of the 300mm thick
topping slab;
R/F formwork erection and steel
fixing of Passenger Terminal Building;
Formwork for lift shaft of
Passenger Terminal Building;
Sheet piling for Noise Barrier 2
of Helipad;
Demolition of existing ferry
pier;
Dismantling and erection of
formwork for concrete coping;
Casting of Expo Drive East mass
concreting coping formwork erection of Bays 8 and 9 were completed on 11
November 2011, and Bay 5;
Formwork and rebar fixing for
the bus shelter footing at Expo Drive East;
Approximate 50m cooling water
pipe was laid at Harbour Centre, Harbour Road, Tonnochy Raod and ex-pet
garden;
Approximate
Construction of wash out chamber
at Harbour Road and access manhole at Harbour Centre;
Trench excavation and cooling
mains installation along Tonnochy Road;
Installation of PVC and G.I
cable ducts was ongoing at Harbour Road;
Installation of submarine
outfall pipe up to CHA-105 and CHB-130, continue backfilling on the HDPE
pipelines;
Dredging for submarine outfall
pipe;
Filling up grade 75 to gap
between casing sleeves and pile casing of new ferry pier;
Installation of lateral support
and excavation for common trench for 132kV cable and manholes of Wan Shing
Street;
Rebar fixing of base slab and
formwork completed of Wan Shing Street at Bay 22 was completed;
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;
Base slab of Wan Shing Street at
Bays 24;
Excavation and lateral support
for DSD receiving pits;
Commence D610 pipe pile wall
construction at landside cofferdam of salt water intake culvert;
11 out of 12 nos of pre-bored
H-pile for box culverts N1 was casted as of 20 November 2011;
Removal of falsework of P9 was
completed on 13 November 2011, and P8 was completed on 19 November 2011;
Fabrication of the steel frames
for water diversion and temporary sheet pile walls of WCR2 reclamation
commenced; and
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 |
Seawall block construction,
reclamation work at TS4;
Maintenance dredging of
navigation channel and mooring area;
Night time protection works at
CHT;
Construction of dewatering well
at Hung Hing Road and POC; and
Precautionary works at Abutment
A |
Seawall block construction,
reclamation work and diaphragm wall construction preparation works at TS4;
Maintenance dredging of
navigation channel and mooring area; and
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 |
Installation of bored pile
casing;
Excavation of bored piles;
Pre-drilling works; and
Installation of temporary
staging platforms |
Installation of bored pile
casing;
Excavation of bored piles;
Pre-drilling works;
Installation of temporary
staging platforms |
Installation of bored pile
casing;
Excavation of bored piles;
Concreting of bored piles; and
Pre-drilling works
|
2.5.6.
Implementation
status of the recommended mitigation measures during this reporting period is
presented in Appendix 2.1.
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.
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.
3.3.1.
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.
4.0.1.
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).
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.
4.2.1
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
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.
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 |
3 |
0 |
21 |
30 |
19 |
22 |
5 |
0 |
20 |
9 |
6 |
5 |
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 |
||
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.
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.
5.0.1.
The Event Action
Plan for construction noise, air quality and water quality are presented in Appendix 5.1.
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
5.2.1
No
project-related exceedance was recorded in the real-time noise results in
reporting quarter.
5.3.1.
No exceedance
was recorded in the reporting quarter.
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.
5.5.1.
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.
5.6.1
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.
5.7.1
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.
6.0.1.
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.
7.0.1.
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.
8.0.1.
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.