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General Building Construction

Air Pollution

Common Problems Relevant Environmental Control
Dust Air Pollution Control (Construction Dust) Regulation, Cap. 311R requires the relevant contractor to adopt effective dust control measures.

Practical Solutions

  • Provide dust screens to enclose the scaffolding of the building
  • Enclose material hoist by impervious sheeting
  • Enclose debris chute and collection chamber by impervious sheeting
  • Spray water on debris before it is dumped into a debris chute
  • Spray water on the surface of facade before and during grinding work
  • Equip vacuum cleaner on grinder for facade grinding work
  • Provide hard paving on open area
Dust screen for scaffolding and material hoist
Dust screen for scaffolding and material hoist
 
Enclosed debris chute and collection chamber
Enclosed debris chute and collection chamber
 
Material hoist enclosed by dust screen
Material hoist enclosed by dust screen
 
Grinder equipped with vacuum cleaner
Grinder equipped with vacuum cleaner
 
Open area paved with precast concrete board
Open area paved with precast concrete board
 
Open area paved with bitumen
Open area paved with bitumen
 
Open area paved with steel structure
Open area paved with steel structure

 

Noise Pollution

Common Problems Relevant Environmental Control
- Under the Noise Control Ordinance, Cap. 400, use of Powered Mechanical Equipment (PME) and Prescribed Construction Work (PCW) are not allowed from 7pm to 7am on the next day or anytime on public holidays, including Sundays.

Practical Solutions

  • Apply Construction Noise Permit for use of Powered Mechanical Equipment (PME) and carrying out of Prescribed Construction Work (PCW) in restricted hours.
    Restricted hours means the time between 1900 and 0700 hours on normal weekdays and any time on a general holiday, including Sunday.
    PCW include:
    • Erection or dismantling of formwork or scaffolding
    • Loading, unloading or handling of rubble, wooden boards, steel bars, wood or scaffolding material
    • Hammering
  • Use noise barrier or enclosure for noisy plants
Movable noise barrier
Movable noise barrier

 

Water Pollution

Common Problems Relevant Environmental Control
Effluent discharged to stormwater drain Under the Water Pollution Control Ordinance, Cap. 358, discharge of polluted waters into stormwater drains is not permitted, discharging wastewater from construction activities into sewers or elsewhere should comply with the terms and conditions of a licence issued by the EPD.

Practical Solutions

  • Apply license from the EPD before discharging effluent from construction site
  • Treat wastewater to meet the conditions of effluent discharge license prior to discharging
  • Conduct regular self-monitoring checks to ensure the quality of the effluent discharged meet the prescribed standard
Wastewater collection basin at building floor
Wastewater collection basin at building floor
 
Proprietary wastewater treatment plant using coagulant to enhance sedimentation efficiency
Proprietary wastewater treatment plant using coagulant to enhance sedimentation efficiency

 

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User review date: 
Friday, 16 July, 2010