| 英文摘要 |
(I) The cleaning operation began on March 9, 2021 and, based on the statistics until December 30, 2021, the street washing operation reached 12,002.9 kilometers. The cumulative achievement rate was 100%.
(II) Estimation of the street cleaning benefits in pollution reduction:
The total length of the sweeping street in this period was 12,002.9 kilometers. According to the EPA's reduction formula (reduction amount = length of sweeping street × reduction factor), total suspended particle (TSP) can be reduced to 165.64 metric tons, 31.21 metric tons of PM10 and 7.29 metric tons of PM2.5. In addition, according to the 2021 Air Pollution Control Plan of Chiayi City, the control category of the project is classified as
“fugitive emission source”, which adopts a control strategy of “Strengthening Street Dust Cleaning Operation” with the reduction planning method of “Execution Street Cleaning Operation” (including the cleaning team work of the bureau). It is cheduled to perform a total cleaning length of 73,000 km, which is expected to reduce TSP 1,007.40 metric tons, PM10 189.80 metric tons and PM2.5 44.31 metric tons. The implementation of this project long with the EPA cleaning team (until December 30 statistically) with the results of a total of 76,461.81 km of washing length, is expected to reduce TSP 1,055.17 metric tons, PM10 198.80 metric tons and PM2.5 46.41 metric tons, having reached 100% of estimated objective.
(III) Census of road fouling condition:
In order to strengthen the mastery and improvement of the road dirt level in Chiayi City to serve as a reference for regular planning of the street washing route, the project had conducted a comprehensive road census on Chiayi City's roads and streets washing operation every month. Road census work began in March, and a totaled 340 time/road had been surveyed by the end of September. The total number of kilometers in the census reached 792.50 kilometers. The results of the census accounted for more than 84.8% of Class A roads in December and 15.2% of Class B roads. The 38 cases (roads) were reported to have improved.
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