1.Plan Name:Street Fugitive Dust Improvement Plan of Chiayi City in 2009 2.from 98/3/25 to 98/12/31 stops, counts for 9 months 3.Plan content: (1)Washes the street length statistics to 98/12/28 total execution 17,711.84 kilometers, completes the progress to reach 101.21% (2) According to the environmental protection bureau recognized the decrement formula computation, the street washing 17,711.84kilometers to compute decrease TSP 244.4 metric tons and PM1046.1metric tons. (3) The roadway census findings, non class-C level , class-A at 54%, class-B at 46%. (4 )The plan checks：Completes 18 times, reaches the overall progress 100%, the grand total checks 140 kilometers (5) benefit appraisal: a. TSP and PM10 examination work, after washes the street the TSP reduction rate between 6.02％~20.59％;After washes the street the PM10 reduction rate between17.50％~28.89％ b. Street dust diagnosis work: According to the analysis result demonstrated washes off the work regarding total street dust reduction rate is 79.72% (6) Questionnaire survey：Completes 222 questionnaire surveys in October

Chiayi City,Street Fugitive Dust Improvement,Street Washing