12.                      Implementation Schedule of the Proposed Mitigation Measures for the Comprehensive Development at Yau Tong Bay

Table 12.1      Implementation Schedule for Noise Control

EIA Ref.#

EM&A Log Ref

Environmental Protection Measures / Mitigation Measures

Location/ Timing

Implementation Agent

Implementation Stages[1]

Relevant Legislation and Guidelines

Des

C

O

Dec

Construction Phase

Sec 5.5.9 – 5.5.10

Sec 3.2.15 - 3.2.17

·         Use of quiet PME

·         Use of 3m high movable noise barrier

 

Works Site/ construction phase

Contractor

 

a

 

 

EIAO-TM

Sec 5.5.9 – 5.5.10

Sec 3.2.15 - 3.2.17

·         Scheduling of work. Equipment to be shielded : compressor, water pump, concrete pump, generator, various hand tools, saw, excavator, loader, truck mixer, mobile crane, vibrator and breaker.

 

For the examination periods of schools

Contractor

 

a

 

 

EIAO-TM

Sec 5.10.2

Sec 3.2

·         A limited amount of day-time noise monitoring for 30 active minutes on a bi-weekly basis shall be carried out at noise monitoring locations.

The preferred locations will be at Yau Tong Estate (Phase 2), Eastern Harbour Crossing Site (Phase 2) and the new school at Yau Tong Estate (South)/ construction phase

Contractor

 

a

 

 

EIAO-TM

Operational Phase

Sec 5.6.13

Sec 3.3

·        Setback of the schools

-      Minimum 15m from Cha Kwo Ling Road

·        Setback of the residential blocks

-      Minimum 30m from Ko Fai Road

-      Minimum 30m from Weatern Coast Road

Throughout the design and operation stages

Developer

a

 

a

 

EIAO-TM

Sec 5.6.13

Sec 3.3

·        Podium edge noise barriers

·        Purpose-built noise barriers

Throughout the design and operation stages

Developer /Development Management Group[2] 

a

 

a

 

EIAO-TM

Sec 5.6.13

Sec 3.3

·        Provision of upgraded glazing and air-conditioners

Throughout the design and operation stages

Developer

a

 

a

 

EIAO-TM

[1] - Des - Design, C - Construction, O - Operation & Dec – Decommissioning

[2] - The Developer will construct the noise barriers and the development management group will maintain the noise barriers

 

Table 12.2      Implementation Schedule for Air Quality Control

EIA Ref #

EM&A Log Ref

Environmental Protection Measures/

Mitigation Measures

Location/ Timing

Implementation Agent

Implementation Stages*

Relevant Legislation and Guidelines

Des

C

O

Dec

 

 

General Site Management

·      The Contractor shall at all time prevent dust nuisance as a result of construction activities. The air control system installed shall be operated whenever the plants in operation.

·      Careful sitting of construction activities which generate substantial amount of dust can effectively reduce the overall impact.

·      No free falling construction debris should be allowed; debris should be let down by hoist or enclosed tunnel to the ground.

·      Frequent watering for particularly dust areas. The frequency of application in order to achieve effective dust control will depend upon local conditions such as rainfall, temperature, wind speed and humidity. It is important to avoid overwatering or allowing surface layer of material to become dried out such that sufficient adhesion can be maintained to percent dust emissions.

·      Follow mitigation measures as laid out in Air Pollution Control (Construction Dust) Regulation.

 

Environmental Monitoring and Audit

·      EM&A exercise for dust monitoring should be conducted as detailed in the EM&A manual.

 

 

 

 

 

Throughout the construction site / During the development construction

Project proponent and contractor

 

a

 

 

 

 

 

Vehicles and Unpaved Site Roads

·      Regular watering should be employed with complete coverage during construction phase to reduce dust emission from unpaved roads.

·      Speed controls for vehicles on unpaved site roads and movement of vehicles should be confined to designed roadways within the site.

·      Where feasible, routing of vehicles and positioning of construction plants should be at a maximum possible distances from sensitive receivers.

·      All dusty vehicle loads transported to, from and between site locations should be covered by tarpaulin.

·      Vehicle wheel and body washing stations should be established at exit points of site and public roads, combined with cleaning of public roads wherever necessary and practical.

 

Aggregate Storage and Handling

·      When stockpiling of construction material or debris is inevitable, materials should be enclose and covered up.

·      Provide wind breaks and covering the exposed material with tarpaulin.

·      Watering the storage piles and during aggregate handling operations.

·      Whenever possible, materials should be damped prior to handling.

·      Handling procedures should be developed to cause minimal disturbance.

·      Use screening lower wind speed in the site area and thus reduce dust generation.

 

Throughout the construction site / During the development construction

Project proponent and contractor

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

a

 

 

 

 

 

Odour Control Measures

·       An activated carbon filter at the exhaust of the temporary sewage retention tank to an efficiency of 99%

 

Buffer for I/R Interface

Same mitigation measures as noise impact

 

 

 

a

 

a

 

 

Table 12.3      Implementation Schedule for Water Quality Control

EIA Ref.#

EM&A Log Ref

Environmental Protection Measures/

Mitigation Measures

Location/ Timing

Implementation Agent

Implementation Stages*

Relevant Legislation and Guidelines

Des

C

O

Dec

Sec 6.9

Sec 4.2

·        Septic tanks or chemical toilets should be used as far as practicable.  Grease traps for wastewater generated from the canteen, should also be provided.  Any such treatment facilities should be frequently maintained to ensure proper function.  Production water should be re-cycled to minimise the wastewater discharge, where possible.

·        Provision of perimeter channels to intercept storm-runoff from outside the site.  These should be constructed in advance of site formation works and earthworks;

·        Sand/silt removal facilities such as sand traps, silt traps and sediment basins should be provided to remove the sand/silt particles from run-off.  These facilities should be properly and regularly maintained;

·        Careful programming of the works to minimise soil excavation works during rainy seasons;

·        Exposed soil surface should be protected by shotcrete or hydroseeding as soon as possible to reduce the potential of soil erosion;

·        Temporary access roads should be protected by crushed gravel and exposed slope surfaces should be protected when rainstorms are likely;

·       Trench excavation should be avoided in the wet season, and if necessary, these should be excavated and backfilled in short sections;

·        Open stockpiles of construction materials on site should be covered with tarpaulin or similar fabric during rainstorms;

·        Storage tanks and drums shall be stored in bunded area with 110% of the tank and drum capacity.  All storage tanks shall be fitted with high level alarms and leak detector systems.  Drainage from bunded area shall be directed by a sump to oil interceptors with sufficient capacity to retain major spill; and

·        Open refuelling area, maintenance area and parking area shall be on hard-standing area with perimeter channels directed to stormdrain via petrol interceptor.

 

Work site/

During the

construction

period

(2005-2015)

Contractor

 

a

 

 

PN/94

Sec 6.9

Sec 4.2

·        During excavation works, no groundwater shall be discharged into the stormwater drains or marine waters.  Groundwater shall be re-discharged back into the ground by the recharge well method.

Work site/

During the

construction

period

(2005-2015)

Contractor

 

a

 

 

 

Sec 6.9

Sec 4.3

·        Runoff generated from the new development shall be controlled and routed via sediment basins or silt traps to minimise pollution load to Victoria Harbour.

 

Work site/ During detailed design stage

Project Proponent responsible for implementation

a

 

 

 

 

Sec 6.9

Sec 4.2

Design consideration for Cha Kwo Ling Saltwater Intake should this be reprovisioned or upgraded in the future under the proposed Full Reclamation option:

·        Intake level is recommended to be located at below -2.0 mPD to avoid abstracting the surface sewage plume from the Yau Tong Sewage Pumping Station emergency outfall at Ko Fai Road; and  

·        Optimal intake configuration should be reviewed and decided at the detailed design stage.

 

Cha Kwo Ling Saltwater Intake /

During detailed design stage

Not known at this stage

a

 

 

 

 

Sec 6.9

Sec 4.3

An on-site retention tank for the sewage from the proposed YTB Development shall be provided as a contingency measure to mitigate the potential shortfall in sewerage capacity, if the development population intake is prior to the completion of the upgrading of the public sewerage systems.  The measure shall be reviewed at the detailed design.  If retention tank is provided, stand-by pumps and dual-power supply shall be installed to ensure reliable operation of the retention tank and to minimise overflow.  If the retention tank is not manned 24 hours, telemetry system shall be provided to other 24 hours facilities to ensure the operation of the retention tank will be monitored continuously and any malfunctioning of the retention tank will be readily detected and rectified

Work site/ During detailed design stage

Project Proponent responsible for implementation

a

 

 

 

 

-

Sec 4.4

Upon completion of all marine-based construction activities, a post-project monitoring exercise on water quality shall be carried out for 4 weeks in the same manner as the impact monitoring, plus monitoring of ammoniacal nitrogen and E.coli.  The necessity of additional 6-month post-project water quality monitoring will be subject to the results obtained after the 4-week monitoring period at the Cha Kwo Ling Saltwater intake.  For other sensitive receivers, a 4-week post-project monitoring period will be adequate.  Details of monitoring are provided in the EM&A Manual of the Yau Tong Bay Development, Reclamation of Yau Tong Bay, Environmental Impact Assessment Study.

Work site / Within six months after the completion of marine works

Project proponent and contractor

 

ü

 

 

 

Sec 6.9

-

Establish communication procedure between WSD and DSD for dealing with the event of potential emergency sewage discharge at the Yau Tong sewage pumping station.  DSD should inform WSD of the details of such discharge through the emergency outfall, e.g. volume, timing and duration, in advance where possible.  DSD should minimize the discharge and liaise with WSD to avoid discharge during peak operation hours of WSD’s saltwater pumping station.

During detailed design stage

Project proponent and contractor, DSD and WSD

 

 

ü

 

 

#           All recommendations and requirements resulted during the course of EIA/EA Process, including ACE and/or accepted public comment to the proposed project.

 *            Des - Design, C - Construction, O - Operation & Dec – Decommissioning

Table 12.4      Implementation Schedule for Waste Management

EIA Ref.#

EM&A Log Ref

Environmental Protection Measures /

Mitigation Measures

Location/ Timing

Implementation Agent

Implementation Stages*

Relevant Legislation and Guidelines

Des

C

O

Dec

Sec

7.3

Sec 5.2

·        Nomination of a site manager to be responsible for good site practice, arrangements for collection and effective disposal to an appropriate facility, of all wastes generated at the terminal;

·        Training of site personnel in proper waste management and chemical handling procedures;

·        Provision of sufficient waste disposal points and regular collection for disposal;

·        Appropriate measures should be employed to minimise windblown litter and dust during transportation of waste by either covering trucks or by transporting wastes in enclosed containers;

·        Separation of chemical wastes for special handling and appropriate treatment at the chemical waste treatment facility;

·        Regular cleaning and maintenance programme for construction plant and equipment, drainage systems, sumps and oil interceptors;

·        Plan and stock construction materials carefully to minimise amount of waste generated and avoid unnecessary generation of waste;

·       Procedures such as a trip ticket system should be developed to monitor the disposal of C&D material and solid wastes at public filling areas and landfills, and to control fly-tipping.

Work site/

During the

construction

period

(2005 -2015)

Contractor responsible for implementation

 

a

 

 

 

 

 

·        Construction and demolition materials should be sorted on site into inert (public fill) and non-inert fraction (C&D waste) for reuse and recycling as far as practical.  The C&D waste should be reused or recycled as far as practicable to minimise the waste load to the landfill sites, whilst the public fill (such as soil, rock, asphalt, concrete, brick building debris, etc.) should be reused on site as far as possible and the surplus delivered to public fills or other reclamation sites;

·        Provision of an enclosed transfer facility for storage and containment;

·        Refuse containers such as open skips should be provided at every work site for use by the workforce. Putrescible wastes should not be stored for a period exceeding 48 hours, however, removal every 24 hours is preferable;

·        Human waste should be discharged into septic tanks provided by the Contractors and be removed regularly by a hygiene services company;

·        Drainage serving an open oil or petrol filling point or from vehicle and plant servicing areas shall be connected to the site drainage system via a petrol/oil interceptor with storm water bypass; and

·       Preparation for accidental spill and emergency action plans, including details for communications and alarm systems, evacuation procedures, fire control equipment, water supply and containment procedures and materials.

 

 

 

 

 

 

 

Sec

7.4

Sec 5.2

·        Refuse collection chambers (RCC) should be provided for the residential development as well as the office/retail development.

 

Work site/

During detailed design stage

Project Proponent  responsible for implementation

a

 

 

 

 

#             All recommendations and requirements resulted during the course of EIA/EA Process, including ACE and/or accepted public comment to the proposed project.

 *            Des - Design, C - Construction, O - Operation & Dec – Decommissioning

Table 12.5      Implementation Schedule for Landscape and Visual Mitigation Measures

EIA Ref #

EM&A Log Ref

Environmental Protection Measures /

Mitigation Measures

Location/ Timing

Implementation Agent

Implementation Stages*

Relevant Legislation and Guidelines

 

Des

C

O

Dec

 

Sec 9.9.1

 

 

·        Control of night time lighting

·      Erection of Decorative Screen Hoarding

Work Site/ construction phase

Contractor

 

a

 

 

 

 

Sec 9.9.3

 

·        Design to provide high quality landscape treatment and to create a distinctive character for the new development

·        Design of promenade to maximize the recreational use of the seafront and improve the interface between land and sea

·        Design of roadside landscape to create a comfortable pedestrian environment

·        Design of the setting and layout of buildings to define and create comfortable external space

·        Provision of convenient pedestrian linkages between all open spaces to provide a continuous landscape framework

·        Provision of convenient pedestrian linkages to existing and proposed urban framework adjoining the site to facilitate accessibility to the distinct open space and promenade

·        Provision of an uninterrupted continuous pedestrian link from the future Yau Tong MTR Station to the waterfront promenade so as to improve the accessibility from hinterland to the waterfront.

·        Use of landscape podium decks to improve pedestrian linkage to the proposed MTR Station

Work Site/ During detailed design stage

Project Proponent responsible for implementation

a

 

 

 

 

 

 

 

·        Introduction of earth mounds planting area to introduce landscape interest in topography on the flat reclaimed land and to provide natural visual and/or noise banzer

·        Programming for advance, planting to allow more time for plant establishment

·        Design of view corridors to the harbour to improve the visual permeability of the harbour view to the space and buildings away from the seafront.

·        Provision of sky garden to improve the permeability and to reduce walling effect of the built development.

·        Provision of set back of the building block from sensitive receivers as visual buffer.

·        Location of landmark at strategic model point to enhance the view of the built form. Features to be added to breakdown the scale of the office towers.

·        Careful selection of colour rendering and external finishes material of the towers to minimize visual impacts.

·        Careful design of road and elevated structure to limit visual impacts.

·        Careful design and colour rendering of noise barriers to limit visual impacts.  Transparent panels to be adopted to minimise the visual impact, and these to be integrated with the fence wall / podium design.

·        Integration of the residential towers with well-designed roof feature stepping down from inland toward waterfront.

·        Integrate design of the building element with landscape.

 

 

 

 

 

 

 

Sec 9.9.4

 

·        Screen planting around the site to limit the impacts of elevated structures

·        Landscape buffers and planting in and around the development itself to screen partially close view of the site.

·        Colour rendering of the towers

·        Linkage of landscaped garden with waterfront promenade.

·        Screen planting around the potentially relocated saltwater pumping station at waterfront promenade if it is the intention of WSD to relocate the existing Cha Kwo Ling Saltwater Pumping Station..

Work Site/during development construction stage

 

Contractor

 

a

a

 

 

#           All recommendations and requirements resulted during the course of EIA/EA Process, including ACE and/or accepted public comment to the proposed project.

·             Des - Design, C - Construction, O - Operation & Dec – Decommissioning