In order to actively and effectively use air pollution control costs to improve the city's air quality, and strive for success in the EPD's performance appraisal system, the implementation of this program integrated various air quality improvement sub-program results, also track the pollution control strategy implementation progress, and raise proposals in due course to achieve the purpose of continuous improvement of air quality. This year's program execution period started from March 7, 2017 till December 15, 2017. At the implementation of the interim phase, in the proportion of the time 93%, according to the contract, the interim report should be submitted. The work progress reached 98%, and the focuses of the work program in the implementation of the outcomes are summarized as follows：
(A) Air quality indicators and trends in air quality changes
Statistically, our city from 2012 till 2016, the days of station PSI> 100 have decreased from 1 days of station (NPL ratio 0.27%) in 2012 to 1 days of station (0.27%) in 2016, showing Chiayi City air quality has improved with the effectiveness and its air quality has also improved. In 2017, from January to December the days of AQI≧151 areadverse Station Day is 15 days, which is also in line with this year's air pollution control targets (less than 26 days of station); as for PSI <50, days of good air quality days of station. In 2012, 88 days of station with 24.0% proportion has increased to 141 days of stations (the proportion of 38.5%), showing the air quality tends to be good. In 2017, from January till October, the AQI≦50 days of station is 84 with the proportion of 27.6% ( 84 days of station/ days measured 304 days of station), which is also in line with the prevention and control target. (greater than 30.9%)
(B) Various types of pollution sources attribute analysis
According to the program update and review of the TEDS 9.0 emissions data, in 2013 the city's (emission base year) emissions were suspended particulates (PM10) with 1,177.4 tons, fine suspended particles (PM2.5) with 500.5 tons, sulfur oxide matter (SOX) with 45.9 tons, nitrogen oxides (NOX) 2,283.2 tons, non-methane hydrocarbons (NMHC) with 4,120.9 tons, and carbon monoxide (CO) with 4,998.1 tons. Compared to the previous version (TEDS8.1, 2010), the emissions of granular pollutants (PM10, PM2.5) have increased; the increment industry has produced them increasingly, the pollution management of which must be paid attention to.
Measures are to strengthen the construction pollution control measures, including：1. Improve construction engineering pollution reduction rate (high efficiency prevention and control measures), 2. Enhance the construction engineering consistent management, 3. Improve construction engineering controlling ratio 4. Promote road construction adoption and green fence landscaping, 5. Improve street dust sweeping and washing work.
(C) Reviewing and tracking air pollution control maintenance strategy
Take the current year from January to October for example. As for the city's air pollution control policy promotion status, among the mobile sources 13 strategies, the average of completion rate reached 91%; fugitive sources 14 strategies, the average rate of completion reached 98%; stationary sources 18 strategies, the average of completion rate reached 100%; among 13 strategies to promote low carbon city, the average rate of completion reached 100%, which are all in line with the progress of time process control.
(D) Promoting EPD performance evaluation
In 2016, the Chiayi city's annual evaluation results is the place with "Premium" rating..
In statistics, the city in 2017, from January till October, the EPA performance evaluation self-assessment score was 86.53 with the completion rate of 82%, continuing to improve air quality and maintenance sub programs and jointly striving for performance evaluation results.
(E) Air quality purification zone
The city was set 8 air quality purification areas with its green area reaching 11.452 hectares, with 4 exposed green places, 2 green parks and 2 bike lanes. This year after the self-assessment, the Commission assessment methods, we easily master the purification zone base management and maintenance status; On June 22, and November 23, members inspected the site. In each purification zone base, Jiayou bicycle trail and Qiming park are the best ones.
