C1                           Implementation Schedule

C1.1                     Introduction

This Annex summarises all the mitigation measures recommended in the EIA Study and presents them in the form of an Implementation Schedule in accordance with the requirements of Section 3.4.6.3 of the EIA Study Brief No. ESB-164/2007.

 

The Implementation Schedule has the following column headings:

 

EIA Ref

 

This denotes the section number or reference from the EIA Report Main text.

 

EM&A Ref

 

This denotes the sequential number of each of the recommended mitigation measures specified in the Implementation Schedule.

 

Recommended Mitigation Measures

 

This denotes the recommended mitigation measures, courses of action or subsequent deliverables that are to be adopted, undertaken or delivered to avoid, reduce or ameliorate predicted environmental impacts.

 

Objectives of the Recommended Measure and Main Concerns to be Addressed

 

This denotes the objectives of the recommended mitigation measures and main concerns to address.

 

Location of Measures

 

This indicates the spatial area in which the recommended mitigation measures are to be implemented. 

 

Who to Implement the Measures?

 

This denotes where the responsibility lies for the implementation of the recommended mitigation measures.

 

When to Implement the Measures?

 

This denotes the stage at which the recommended mitigation measures are to be implemented during the decommissioning phase.

 

What Requirements or Standards for the Measures to Achieve?

 

This defines the controlling legislation that is required to be complied with.

Table C1.1a    Implementation Schedule

EIA Ref.

EM&A Ref

Recommended mitigation measures

Objectives of the recommended measure & main concerns to be addressed

Location of the measures

Who to implement the measures?

When to implement the measures?

What requirements or standards for the measures to achieve?

Design Stage

Demolition Stage (a)

Air Quality

 

 

 

 

 

 

3.6

AQ1

The engine of idling construction plant will be switched off

To minimise potential air nuisance arising from the demolition works.

All works areas

Demolition contractor(s)

 

ü

Air Pollution Control (Construction Dust) Regulations

3.6

AQ 2

Construction plant will be regularly checked and maintenance to avoid emission of black smoke

To minimise potential air nuisance arising from the demolition works.

All works areas

Demolition contractor(s)

 

ü

Air Pollution Control (Construction Dust) Regulations

3.6

AQ 3

Wheel washing facilities will be provided at the exit of the Project Site

To minimise potential air nuisance arising from the demolition works.

Worksite exit

Demolition contractor(s)

 

ü

Air Pollution Control (Construction Dust) Regulations

3.6

AQ 4

Both ends of the individual section of the duct works of the Co-Combustion unit will be sealed with two layers of polyethylene sheet immediately after dismantle and prior to lower down to the ground level

To minimise potential air nuisance arising from the demolition works.

All works areas

Demolition contractor(s)

ü

ü

Air Pollution Control (Construction Dust) Regulations

3.6

AQ 5

Internal lining or surface of the Co-Combustion unit (including duct works, and chambers of the rotary kiln, secondary combustion unit, gas cooler, and dust collector) will be damped with water spray and wet wiping to remove any residual dust.  Cleaning materials will be placed in sealed bags and disposed of at a landfill designated by the EPD

To minimise potential air nuisance arising from the demolition works.

All works areas

Demolition contractor(s)

ü

ü

Air Pollution Control (Construction Dust) Regulations

3.6

AQ 6

Filter bags of dust collector will be removed in accordance with the manufacturer’s procedures and placed in sealed bags and disposed of with the cleaning materials at a designated landfill

To minimise potential air nuisance arising from the demolition works.

All works areas

Demolition contractor(s)

 

ü

Air Pollution Control (Construction Dust) Regulations

3.6

AQ 7

The concrete structures and slab will be damping with water spray prior to and during the demolition works to minimal dust generation

To minimise potential air nuisance arising from the demolition works.

All works areas

Demolition contractor(s)

 

ü

Air Pollution Control (Construction Dust) Regulations

3.6

AQ 8

Broken concrete and scrap metals will be placed in separate skips.  The skips storing broken concrete will be covered with impervious sheet at the end of each working day and where necessary during windy days

To minimise potential air nuisance arising from the demolition works.

All works areas

Demolition contractor(s)

 

ü

Air Pollution Control (Construction Dust) Regulations

3.6

AQ 9

The dropping height of the imported soil during material handling or will be minimised as much as practicable to minimise dust generation

To minimise potential air nuisance arising from the demolition works.

All works areas

Demolition contractor(s)

 

ü

Air Pollution Control (Construction Dust) Regulations

3.7

AQ10

The cleaning workshop will be provided with forced ventilation and maintained a slight negative pressure, and the exhaust air will be cleaned with a HEPA filter 

To minimise potential air nuisance arising from the cleaning works.

All works areas

Demolition contractor(s)

 

ü

Air Pollution Control (Construction Dust) Regulations

3.7

AQ11

Regular environmental site audits will be conducted to ensure that recommended dust control measures are implemented

To minimise potential air nuisance arising from the demolition works

All works areas

Demolition contractors/GIC Project Team

 

ü

 

Land Contamination    

 

 

 

 

 

 

No potential land contamination impact is anticipated during the CCPP demolition or thereafter.  No mitigation measure for land contamination will be required.

Water Quality  

 

 

 

 

 

 

6.6

WQ1

Prior to the demolition works, perimeter cut-off drains to direct off-site water around the site will be constructed and internal drainage works and erosion and sedimentation control facilities implemented. The design of any silt removal facilities will be based on the guidelines in Appendix A1 of ProPECC PN 1/94.  

To minimise potential water quality impacts arising from the demolition works

All work areas

Demolition contractor(s)

ü

ü

Water Pollution Control Ordinance / EPD Practice Note for Professional Persons, Construction Site Drainage (ProPECC PN 1/94)

6.6

WQ2

Channels, earth bunds or sand bag barriers will be provided on site to direct potential contaminated stormwater to existing underground wastewater storage tank of the MRRF building.  The wastewater will then be pumped to the on-site WWTP for treatment.  

To minimise potential water quality impacts arising from the demolition works

All work areas

Demolition contractor(s)

ü

ü

Water Pollution Control Ordinance / EPD Practice Note for Professional Persons, Construction Site Drainage (ProPECC PN 1/94)

6.6

WQ3

Site Runoff

·            All drainage facilities and erosion and sediment control structures will be regularly inspected and maintained to ensure proper and efficient operation at all times and particularly following rainstorms.  Deposited silt and grit will be removed regularly and disposed of.

To minimise potential water quality impacts arising from the demolition and works

All work areas

Demolition contractor(s)

ü

ü

Water Pollution Control Ordinance / EPD Practice Note for Professional Persons, Construction Site Drainage (ProPECC PN 1/94)

 

 

·            Measures will be taken to reduce the ingress of site drainage into excavations.  If the excavation of concrete foundation is to be carried out in wet season, they will be dug and backfilled in short sections wherever practicable.  Water pumped out from trenches or foundation excavations will be discharged into storm drains via silt removal facilities.

 

 

 

ü

ü

 

 

 

·            Open stockpiles of excavated and demolition materials will be covered with tarpaulin or similar fabric during rainstorms. Measures will be taken to prevent the washing away of residues, chemicals or debris into any drainage system.

 

 

 

 

ü

 

 

 

·            Manholes (including newly constructed ones) will always be adequately covered and temporarily sealed so as to prevent silt, construction materials or debris being washed into the drainage system.

 

 

 

ü

ü

 

 

 

·            Precautions will be taken when a rainstorm is imminent or forecasted, and actions to be taken during or after rainstorms are summarised in Appendix A2 of ProPECC PN 1/94.  Particular attention will be paid to the control of silty surface runoff during storm events.

 

 

 

 

ü

 

 

 

·            All temporary and permanent drainage pipes and culverts provided to facilitate runoff discharge will be adequately designed for the controlled release of storm flows.  All sediment traps will be regularly cleaned and maintained.  The temporary diverted drainage will be reinstated to the original condition when the construction work has finished or the temporary diversion is no longer required.

 

 

 

ü

ü

 

6.6

WQ4

Wastewater from Site Facilities

·            Vehicle and plant servicing areas, vehicle washing bays and lubrication bays will, as far as possible, be located within roofed areas.  The drainage in these covered areas will be connected to foul sewers via a petrol interceptor.   

To minimise potential water quality impacts arising from the demolition works

All work areas

Demolition contractor(s)

ü

ü

Water Pollution Control Ordinance / EPD Practice Note for Professional Persons, Construction Site Drainage (ProPECC PN 1/94)

 

 

·            Oil leakage or spillage will be contained and cleaned up immediately. Waste oil will be collected and stored for recycling or disposal, in accordance with the Waste Disposal Ordinance.  

 

 

 

 

ü

 

6.6

WQ 5

Storage and Handling of Oil, Other Petroleum Products and Chemicals

·            Waste streams classifiable as chemical wastes will be properly stored, collected and treated for compliance with Waste Disposal Ordinance or Waste Disposal (Chemical Waste) (General) Regulation requirements.

To minimise potential water quality impacts arising from the demolition works

All work areas

Demolition contractor(s)

 

ü

Waste Disposal Ordinance / Waste Disposal (Chemical Waste) (General) Regulation

 

 

·            All fuel tanks and chemical storage areas will be provided with locks and be sited on paved areas.

 

 

 

 

ü

 

 

 

·            The storage areas will be surrounded by bunds with a capacity equal to 110% of the storage capacity of the largest tank to prevent spilled oil, fuel and chemicals from reaching the receiving waters.

 

 

 

ü

ü

 

 

 

·            The Contractors will prepare guidelines and procedures for immediate clean-up actions following any spillages of oil, fuel or chemicals.

 

 

 

 

ü

 

 

 

·            Surface run-off from bunded areas will pass through oil/grease traps prior to discharge to the stormwater system.

 

 

 

ü

ü

 

6.6

WQ 6

Sewage from Workforce

The existing toilet facility of the GICP will be available to the construction workforce.  The sewage will be discharged to existing WWTP of the GICP.  The effluent discharge from the site will be monitored as part of the routine monitoring under the WPCO licence

To minimise potential water quality impacts arising from the works

All work areas

Demolition contractor(s)

 

ü

Water Pollution Control Ordinance / EPD Practice Note for Professional Persons, Construction Site Drainage (ProPECC PN 1/94)

6.8

WQ 7

Site Audit

·            To carry out monthly site audits to the works areas to monitor the environmental performance of the Project and to enable prompt actions to rectify any malpractice which may give rise to water pollution problem.

 

To minimise potential water quality impacts arising from the works

All work areas

Demolition contractor(s)/ GIC Project Team

 

ü

 

Waste Management 

 

 

 

 

 

 

5.6

WM1

All the necessary waste disposal permits are obtained prior to the commencement of construction work.

 

To ensure that adverse environmental impacts are prevented

All work areas

GIC/ Demolition contractor(s)

 

ü

Waste Disposal Ordinance (Cap 354)/Waste Disposal (Chemical Waste) (General) Regulation (Cap 354C)

5.6.1

WM 2

Waste Management Hierarchy

The various waste management options are categorised in terms of preference from an environmental viewpoint.  The options considered to be most preferable have the least environmental impacts and are more sustainable in the long term.  The hierarchy is as follows:

·            Avoidance and reduction;

·            Reuse of materials;

·            Recovery and recycling and

·            Treatment and disposal.

 

To ensure that adverse environmental impacts are prevented

 

All work areas

 

GIC/ Demolition contractor(s)

 

ü

 

ü

 

Waste Disposal Ordinance (Cap 354)/Waste Disposal (Chemical Waste) (General) Regulation (Cap 354C) / WBTC Nos. 6/2002 and 6/2002A “Enhanced Specification for Site Cleanliness and Tidiness”

5.6.1

WM 3

Nomination of approved personnel to be responsible for good site practices, arrangements for collection and effective disposal to an appropriate facility of all wastes generated at the site

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

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

·            Provision appropriate measures to reduce windblown litter and dust transportation of waste by either covering trucks or by transporting wastes in enclosed containers;

·            Arrangement of separation of chemical wastes for special handling and appropriate treatment at the CWTC;

·            Arrangement of regular cleaning and maintenance programme for drainage systems, sumps and oil interceptors (if used); and

·            Maintain a recording system for the amount of wastes generated, reused on site, recycled and disposed.

To ensure that adverse environmental impacts are prevented

All work areas

GIC/ Demolition contractor(s)

 

ü

Waste Disposal Ordinance (Cap 354)

5.6.2

WM 4

Waste Reduction Measures

Good management and control can prevent generation of significant amount of waste.  Waste reduction is best achieved at the planning and design stage, as well as by ensuring the implementation of good site practices.  Recommendations to achieve waste reduction include:

 

To ensure that adverse environmental impacts are prevented and to minimise the quantity of waste to be disposed of at landfill.

 

All work areas

 

GIC/ Demolition contractor(s)

 

 

ü

 

Waste Disposal Ordinance (Cap 354)

 

 

·            Segregation and storage of different types of waste in different containers, skips or stockpiles to enhance reuse or recycling of material and their proper disposal;

·            Encourage collection of aluminium cans and waste paper by individual collectors during construction with separate labelled bins provided to segregate these wastes from other general refuse by the workforce;

·            Unused reagents will be recycled as far as possible;

·            The Co-Combustion residues should be reused on-site for cement production in order to avoid the disposal of these wastes at the landfill

 

 

 

 

 

 

5.6.3

WM 5

Chemical Waste

GIC is a registered chemical waste producer and will liaise with EPD to determine the need to update the list of chemical wastes to be handled during the demolition works. 

To ensure proper handling of chemical waste

All work areas

GIC/ Demolition contractor(s)

 

ü

Waste Disposal Ordinance (Cap 354) / Waste Disposal (Chemical Waste) (General) Regulation (Cap 354C) / Code of Practice on the Packaging, Handling and Storage of Chemical Wastes

5.6.3

WM 6

Chemical waste will be handled in accordance with the Code of Practice on the Packaging, Handling and Storage of Chemical Wastes.  The containers to be used for storage of chemical wastes will:

·            Be suitable for the substance they are holding, resistant to corrosion, maintained in a good condition, and securely closed;

·            Have a capacity of less than 450 L unless the specifications have been approved by the EPD; and

·            Display a label in English and Chinese in accordance with instructions prescribed in Schedule 2 of the Regulations.

To ensure proper handling of chemical waste

All work areas

GIC/ Demolition contractor(s)

 

ü

Waste Disposal Ordinance (Cap 354) / Waste Disposal (Chemical Waste) (General) Regulation (Cap 354C) / Code of Practice on the Packaging, Handling and Storage of Chemical Wastes

5.6.3

WM 7

The storage area for chemical wastes will:

·            Be clearly labelled and used solely for the storage of chemical waste;

·            Be enclosed on at least 3 sides;

·            Have an impermeable floor and bunding, of capacity to accommodate 110% of the volume of the largest container or 20% by volume of the chemical waste stored in that area, whichever is the greatest;

·            Have adequate ventilation;

·            Be covered to prevent rainfall entering (water collected within the bund must be tested and disposed of as chemical waste, if necessary); and

·            Be arranged so that incompatible materials are appropriately separated.

To ensure proper handling of chemical waste

All work areas

GIC/ Demolition contractor(s)

 

ü

Waste Disposal Ordinance (Cap 354) / Waste Disposal (Chemical Waste) (General) Regulation (Cap 354C) / Code of Practice on the Packaging, Handling and Storage of Chemical Wastes

5.6.3

WM 8

Chemical waste will be disposed of:

·            Via a licensed waste collector; and

·            To a facility licensed to receive chemical waste, such as the CWTC which also offers a chemical waste collection service and can supply the necessary storage containers.

To ensure proper handling of chemical waste

All work areas

GIC/ Demolition contractor(s)

 

ü

Waste Disposal Ordinance (Cap 354) / Waste Disposal (Chemical Waste) (General) Regulation (Cap 354C) / Code of Practice on the Packaging, Handling and Storage of Chemical Wastes

5.6.4

WM 9

General Waste

General refuse will be stored in enclosed bins separately from construction and chemical wastes.  Recycling bins will be provided at strategic locations to facilitate recovery of aluminium can and waste paper from the site.  Materials recovered will be sold for recycling.

 

To ensure that adverse environmental impacts are prevented and to minimise the quantity of waste to be disposed of at landfill

 

All work areas

 

Demolition contractor(s)

 

 

ü

 

Waste Disposal Ordinance (Cap 354)

 

5.8

WM 10

Environmental Monitoring & Audit Requirements

 

Monthly audits of the waste management practices will be carried out during the Project to determine if wastes are being managed in accordance with the good site practices described in this EIA Report.  The audits examine all aspects of waste management including waste generation, storage, recycling, transport and disposal.

 

To ensure that adverse environmental impacts are prevented

 

All work areas

 

GIC/ Demolition contractor(s)

 

 

ü

 

Note:

(a)     Including dismantling/demolition of structures or building of the CCPP, cleaning of the plant and equipment, demolition of the slab and backfilling of the site with clean soil.