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Air Pollution Control

« Air Pollution Control Ordinance » ( Chapter 311 )

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(Construction Dust) Regulation

(Specified Processes) Regulation

(Smoke) Regulation

(Fuel Restriction) Regulation

(Open Burning) Regulation

« Air Pollution Control Regulations » Relevant to the Construction Industry

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« Air Pollution Control Regulations » Relevant to the Construction Industry

Bitumen plant Concrete batching plant

(Specified Processes) Regulation

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(Smoke) Regulation(Fuel Restriction)

Regulation

« Air Pollution Control Regulations » Relevant to the Construction Industry

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Air Pollution Control (Open Burning) Regulation

• Purpose

Prohibit / Control Open BurningActivities

• Effective date

26 Feb 1996

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Disposal of construction Waste

Site clearance

Disposal of Tyres Salvage of metal

Prohibited Open Burning

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1. Allow at least 28 days for application

2. The applicant shall prove︰

a. an absolute need for the burning;

b. there is no other practical alternative means of waste disposal; and

c. there will not be adverse environmental impact.

3. The Authority may impose terms and conditions in the permit.

Application for Open Burning Permit

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Penalties

Offence Penalties

1. Carry out prohibitedopen burning

2. Carry out openburning without apermit or incontravention ofpermit conditions

1st Conviction:Level 5 ($50,000)

2nd or subsequentconviction:

Level 5 ($50,000) and

3-month imprisonment

Continuous fine:

$500 every 15 minutes

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Purpose

• Employ effective dust abatement measures to

• Reduce dust emission,• Reduce air nuisance, and• Improve general air quality.

• Set out appropriate dust control measures and make them as standard practice in the construction industry.

« Air Pollution Control(Construction Dust) Regulation »

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Classification of Construction Works

• Three main types of construction works:

– Notifiable work: building demolition, construction of superstructure, site formation, reclamation, etc.

– Regulatory work (Notification not required) : road opening /resurfacing, external renovation, slope stabilization.

– Excluded work (Notification not required) : internal renovation, specified process, etc.

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Notifiable Work

• Road construction work

• Demolition of a building

• Construction of building foundation

• Construction of building superstructure

• Site formation

• Reclamation

• Work carried out in any part of a tunnel that is within 100 m of any exit to the open air

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Form NA

Air Pollution Control Ordinance (Chapter 311) Notification pursuant to Section 3(1) of the

Air Pollution Control (Construction Dust) Regulation

Notification Form

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Dust Control Requirement

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Part III of ScheduleGeneral Control Requirements

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• Stop operating the relevant plant or dusty process if there is breakdown of air pollution control equipment.

• Avoid using compressed air jet to clean off dust.

General Requirements

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Vehicle washing

Automatic washing machineHoarding

Site Boundary and Exit• Provide vehicle washing

facilities.

• Pave the area between site exit & the vehicle washing facilities.

• Provide 2.4 m hoarding along site boundary.

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Main Haul Road(4 or more vehicles passing in

any 30 minutes)• Pave with concrete,

bituminous materials, hard cores, etc. and keep clear of dusty materials; or

• Maintain entire road surface wet.

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Road Leading Only to A Construction Site

• Clear dusty materials from the portion of any such road within 30 m of vehicle entrance / exit.

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Do not store in open area

Store in sheltered areaProvide cover

Bagged cement exceeding 20 nos should be covered or enclosed in area sheltered on the top and the 3 sides.

Cement

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Bulk Cement or PFA stored in closed silo with high level alarm.

Cement

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Exposed earth compacted

Exposed earth treated with hydroseeding

Treat by compaction, hydroseeding, vegetation planting, etc. within 6 months after the last construction activity.

Exposed Earth

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Dusty Materials Collected by Fabric Filters or Other Equipment

• Dispose of in enclosed containers.• Do not store in open area.

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Part IV of ScheduleControl Requirements for Individual Activities

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Stockpiling of Dusty Materials

• Cover entirely by impervious sheeting;

• Place in an area sheltered on the top and the 3 sides; or

• Maintain entire surface wet.

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Loading, Unloading or Transfer of Dusty Materials

Wet dusty materials with water spraying prior to operation.

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• Enclose the belt conveyor from the top and the 2 sides.

• Enclose the transfer point between conveyors.

• Install belt scraper and bottom plates.

• Maintain vertical distance between belt conveyor outlet and material landing point at <1 m.

• Enclose the unloading area.

Transfer of Dusty Materials with a Belt Conveyor System

Transfer point enclosed

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Use of Vehicles• Wash every vehicle before

leaving the site to remove dusty materials from body and wheels.

• Cover any load of dusty materials.

Wash vehicle before leaving site

Load on truck

covered

Load on truck inadequately

covered

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Dust collection system to control dust emission

Wet the breaking area to control emission

Drilling, Cutting & Polishing, etc• Spray surface continuou

sly with water.

• Equip with effective dust extraction and filtering device.

Drilling without watering

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Debris Handling

• Cover or store debris in area sheltered on the top and the 3 sides.

• Enclose the debris chute.

• Wet debris before dumping into chute.

Enclosed debris chute and collection area

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Excavation or Earth Moving• Spray the working area with water or chemicals

before, during and immediately after the operation to maintain entire surface wet.

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Concrete production in open area is NOT allowed

Concrete Production• Carry out de-bagging, batching and mixing of

cement and PFA in area sheltered on the top and the 3 sides.

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Site Clearance• Wet the working area

before, during and immediately after the operation.

• Cover all demolished items or place in area sheltered on the top and the 3 sides within a day of demolition.

Dusty material should be covered or removed

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Blasting

• Wet area within 30 m before blasting.

• No blasting during the strong wind signal or tropical cyclone warning No.3 or above is hoisted unless permitted by Commissioner of Mines.

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Part I of Schedule

Control Requirements for Notifiable Works

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Reclamation

Treat or seal any stockpile of dusty materials (>1.2 m high & <50 m from site boundary) with bitumen or other suitable surface stabilizer.

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Demolition of a Building• Wet the working area prior

to, during and immediately after demolition.

• Enclose the building with impervious dust screens to a height of at least 1 m higher.

• Wet remaining dusty materials after removal and clear the road surface.

Wet the working area

Enclose the building under demolition

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Construction of the Superstructure of Building

• Provide effective dust screen where a scaffolding is erected.

• Enclose the skip hoist.

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Part II of Schedule

Control Requirements for Regulatory Works

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Renovation on Outer Surface of External Wall or Roof

• Provide dust screen where there is scaffolding.

• Enclose the skip hoist.

• Wet remaining dusty materials after removal and clear the road surface.

Screen effectively reduce dust nuisance

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Road Opening Resurfacing Work• Cover dusty material.

• Spray, remove / backfill / reinstate dusty materials within 24 hours.

• Dusty materials shall notbe extended beyondpedestrian barriers, fencing or traffic cones.

• Any remaining dusty materials after removal shall be wetted and cleared from road surface.

Remaining dusty materials should be wetted and cleared

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Exemption• Road construction work

• exempt from hoarding requirement.

• Road opening or resurfacing work

• exempt from vehicle washing facilities and hoarding requirements.

• Slope stabilization

• exempt from vehicle washing facilities requirement, and

• exempt from hoarding requirement if the site boundary adjoins road for vehicular traffic.

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• Where there is a threat to human

life or building safety.

• Immediate repair of utility services,

road collapse or road blockage due

to accidents.

Exemption for Emergency Work

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Penalties

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• Include the plan and budget of implementation of dust control measures in the tender.

• Arrange delivery of dust suppression materials and equipment to site at an early stage.

• Ensure good communication between frontline workers and management staff.

• Promote staff awareness on dust control measures.

• Supervise frontline workers.

Tips to Reduce Dust Emission

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Environmental Protection Department