A. Current status of air quality
According to the 2009 statistics of Taiwan's Pollutant Standards Index (PSI)– PSI>100 indicating air quality – the percentage of days with PSI>100were 2.9%, respectively (after factoring out the effects of dust storms).The percentage of days with "good air quality" was 39.8%. Before airpollution control fees were levied in 1994, the percentage of days withPSI>100 and with "good air quality" were 7.0% and 35.2%, respectively. Thefigures clearly indicate that the nation's air quality in recent years hasbeen greatly improved and that efforts to control air pollution have paidoff.
B. Air quality management measures
(1) Air quality improvement objectives
To reach the same air quality standards as advanced countries and to improve overall air quality, the EPA has set the objectives of reducing the percentage of days with PSI>100 by 2011：below 1.5%
a. Short-range objective by 2010: below 2.5%
b. Mid-range objective by 2011: below 2%
c. Long-range objective by 2016: below 1.5%
Based on current situations and forecasts of air quality concentrations, we need to further reinforce control measures or tighten standards for fugitive particulates and ozone precursors in addition to existing control measures and programs. The EPA will take gradual steps to adopt a total quantity control system, enforce stricter standards, advocate the use of clean fuel oil, and promote green products as well as public transportation.
((2) Air quality zoning management
Based on geographical and meteorological conditions and the nature of air contaminants, the EPA has divided the nation into seven Air Quality Zones—northern Taiwan, Jhu-Miao area, central Taiwan, Yun-Chia-Nan area, Kao-Ping area, Hua-Dong area, and Yilan, and announced Total Quantity Control Zones accordingly. Due to air quality in central Taiwan and the Kao-Ping area, priorities are given to these areas to enforce control measures and improvement programs and to set up annual air quality improvement objectives.
(3) Total quantity control system tasks:
a. Establish air quality standards
b. Establish an effective air quality monitoring station network
c. Designate air quality zones and phase-in proclamation of total quantity control zones
d. Draft and enforce total quantity control plans and air pollution control programs
e. Divide air quality zones into compliance and non-compliance zones according to the status of air quality
f. Enforce total quantity reduction in those zones not in compliance with air quality standards; allowable pollutant increase limits in those zones in compliance with air quality standards
g. Promote an emission saving, exchanging and trading system with economic incentives
(4) Air emission data inventory
To keep up with changes in total emissions of air pollutants and to makecontrol programs accordingly, the EPA began to establish a national airemissions database in 1990. Between 1993 and 1994, the EPA set upcity/county air quality improvement and maintenance programs and estimatedthe amount of emissions for the period of 1992 to 2000. In 1998, the EPAcarried out a program to establish standards for estimating air pollutantemissions and set 1997 as the base year for emissions. A database [TEDS4.2edition] was completed in the same year, which would be completely updatedevery three years. Between 2002 and 2003, another emission inventorydatabase [TEDS5.1 edition] was completed, using 2000 as the base year.Between 2005 and 2006, another emission inventory database [TEDS6.1] wascompleted, using 2003 as the base year. Between 2008-2009, the EPA revisedthe [TEDS7] database, using 2007 as the base year and completed the[TEDS7.0] database.
- Environmental Protection Administration, R.O.C.(Taiwan)