Air Pollution Control «Air Pollution Control Ordinance»



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Air Pollution Control « Air Pollution Control Ordinance » ( Chapter 311 )




« Air Pollution Control Regulations » Relevant to the Construction Industry



« Air Pollution Control Regulations » Relevant to the Construction Industry



Air Pollution Control (Open Burning) Regulation

  • Purpose

  • Prohibit / Control Open Burning Activities

  • Effective date

  • 26 Feb 1996





1. Allow at least 28 days for application

  • 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.



Penalties



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.



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.


Notifiable Work

  • Road construction work

  • Demolition of a building

  • Construction of building foundation

  • Construction of building superstructure





Dust Control Requirement



Part III of Schedule

  • General Control Requirements



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

  • 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.



Site Boundary and Exit

  • Provide vehicle washing facilities.



Main Haul Road (4 or more vehicles passing in any 30 minutes)



Road Leading Only to A Construction Site

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











Part IV of Schedule

  • Control Requirements for Individual Activities



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.



Loading, Unloading or Transfer of Dusty Materials

  • Wet dusty materials with water spraying prior to operation.



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

  • 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.



Use of Vehicles

  • Wash every vehicle before leaving the site to remove dusty materials from body and wheels.

  • Cover any load of dusty materials.



Drilling, Cutting & Polishing, etc

  • Spray surface continuously with water.

  • Equip with effective dust extraction and filtering device.



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.



Excavation or Earth Moving

  • Spray the working area with water or chemicals before, during and immediately after the operation to maintain entire surface wet.



Concrete Production

  • Carry out de-bagging, batching and mixing of cement and PFA in area sheltered on the top and the 3 sides.



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.



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.



Part I of Schedule

  • Control Requirements for Notifiable Works



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.



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.



Construction of the Superstructure of Building

  • Provide effective dust screen where a scaffolding is erected.

  • Enclose the skip hoist.



Part II of Schedule

  • Control Requirements for Regulatory Works



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.



Road Opening Resurfacing Work

  • Cover dusty material.

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

  • Dusty materials shall not be extended beyond pedestrian barriers, fencing or traffic cones.

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



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.


Where there is a threat to human life or building safety.

  • Where there is a threat to human life or building safety.

  • Immediate repair of utility services, road collapse or road blockage due to accidents.



Penalties



Tips to Reduce Dust Emission

  • 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.



Environmental Protection Department



: epd


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