All gas stations in Beijing will be retrofitted to prevent petroleum vaporization from causing smog and help improve air quality before the 2008 Games, an Olympics environmental advisor has said.

Sarah Liao Sau-tung said the municipal government has started equipping about 1,400 gas stations with vapor traps and recovery devices on which work is expected to be completed by the end of next May.

Also, 1,245 oil tank vehicles and 37 fuel storage areas will be covered. In addition to improving air quality, the efforts can help recover 20,000 tons of gasoline per year and decrease safety hazards at filling stations.