| 英文摘要 |
1.Plan Name：Street Fugitive Dust Improvement Plan of Chiayi City in 2011.
2. PlanTime：The project duration spanned from February 14,2011 to December 20, 2011.
3.Plan Content：
(1)Washes the street length statistics to December 15,2011 total execution 17,757.85 kilometers, completes the progress to reach 101.47%.
(2) According to the Environmental Protection Administration Executive Yuan,R.O.C(Taiwan) recognized the decrement formula computation, the street washing 17,757.85 kilometers to compute decrease TSP 245.06 metric tons and PM10 46.17 metric tons.
(3) The roadway census findings, non class-C , class-A at 82%, class-B at 18%.
(4 )The plan checks：Completes 22 times, reaches the overall progress 100%, the grand total checks 153.2 kilometers.
(5) benefit appraisal:
a. TSP and PM10 examination work, after washes the street the TSP reduction rate between 29.00％~32.00％;After washes the street the PM10 reduction rate between 15.00％~23.00％.
b. Street dust diagnosis work: This project had completed 12 times of street dust test work.According to the analysis result demonstrated washes off the work regarding total street dust reduction rate is between 23.20％~40.20%.
(6) Questionnaire survey：Completed 250 questionnaire surveys in September.
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