The environmental protection areas in the Seoul metropolitan area are famous for their beautiful landscapes and closeness to large cities. Therefore, with the eased regulations on those areas, investment is expected to increase in creating large tourist areas. Under the past regulation, building factories was banned within a certain distance from the upstream areas of water source. As a result, wide areas near the water source (at maximum of 20 km from the point of collecting water) were strictly controlled. But some expressed concern that the regulation is too strict for plants discharging only pollutants similar to sewage from households. To solve that problem, the government revised relevant laws in December 2008. It eased the regulation on factories that meet certain standards such as not discharging industrial waste waster and treating all emitted sewage through public sewerage system. So the limit on distance was reduced to 7 km upstream from water collection sites. To control air pollutants more effectively, Ministry of Environment introduced the Telemetry Monitoring System (TMS) on the smokestacks of plants in 1997, and Total Air Pollution Load Management System in 2007. TMS and Total Air Pollution Load Management System have been recognized as advanced systems in that TMS enables real-time monitoring of the concentrations of air pollutants and Total Air Pollution Load Management System encourages effective management of air pollution in places of business through a quota system. However, the two systems put economic burdens on companies. Therefore, the government has come up with measures to reduce such burdens without undermining the effectiveness of the systems. First of all, improvements made on Total Air Pollution Load Management System include:  Next, some changes were made on TMS System as follows:  Heavy restrictions have been put on land development in protected areas and on historic sites designated as natural parks for public interest. However, building tourist facilities such as accommodation was also limited, causing inconveniences to local residents and visitors. Constructing condominiums in natural parks has been restricted since early 1990, because such buildings could lead to a sense of inequality among different social classes. But recent surveys on local residents near natural parks and the general public showed that the majority of respondents were in favor of building condominiums in natural parks. And the demand for tourism has been increasing since the introduction of a 5-day workweek system. For these reasons, the government decided to lift restrictions on building condominiums in natural parks. Also, the government has eased regulations on establishing cable cars in natural parks. In the latter half of 2009, limits on distance will be lowered from 2 km to 5 km, which will lead to more cable cars in natural parks.