The data of Air Quality Index (AQI) until November 2019 in Taitung and Guanshan stations showed that days with “good” level (AQI <50) were 92.2% and 94.2% respectively, days with “normal” level (AQI 51-100) were 7.8% and 5.8%, no number of days with AQI over 100 occurred, all the air quality index items met the air quality standard and the targets of pollution control management. The further analysis showed that the hourly concentration trend of each pollutant during 2014-2019 was similar. For Taitung station, the pollution of PM10, O3, PM2.5, NO2, and SO2 were significantly improved compared to the previous 5 years; while for Guanshan station, PM10, O3, and NO2 were significantly improved and the others pollutants seemed mild variation.
According to the model of TEDS10.0, total emission amount of TSP, PM10, and PM2.5 based on 2016 would be 10,284, 4,644 and 1,827 tons, mainly contributed by construction and road dust, followed by industry and open burning; the annual emission amount of SOx, NOx, NMHC and CO would be 80, 2,947, 4,890 and 6,483 tons, SOx is mostly from industry, NOx and CO are mostly contributed by vehicles emission, and NMHC is more from business, vehicles, construction or road dust.
For the air pollution control management, the inspection was conducted monthly, and only a few items were behind the targets. Besides, this project continues to modified and discussed the contents for the next revised version of the air pollution control plan for Taitung, including air quality deterioration control measures, and set the reduction targets base on the formulas and estimates of TEDS 10.0., clarify the differences between of the real emission amount and the controllable amount. There are three suggestions for management strategy. First, evaluate the resources and benefits in order to set the short term and long term goals more suitable; second, remove the duplicate calculation in the old version; third, delete the item of other types in construction management.
For the indoor air quality management, according to the indoor air quality performance evaluation of Environmental Protection Administration, Executive Yuan (EPA), three types of non-announcement management places including fitness center/gym(floor area below 2000 m2), baby-care center and underground parking lot were added as the expanded inspection subjects this year, 47 places were conducted the CO2 inspection, and 12 of them had the concentration over 1000ppm, 5 of these 12 places had been chosen for specific items inspection base on the category of each place. For 9 announcement management places from the first batch and the other 9 from the second batch announced by EPA, all installed dedicated personnel and been certificated by the competent authority, 11 of them conducted the regulated inspection, and all the information had been saved in system of Taitung indoor air quality database. Besides, in order to convey the concept and importance of indoor air quality control to the public and related management places, this project held 2 indoor air quality workshop and 1 propaganda activity.
