In order to improve the air quality in Chiayi City and give citizens a clean and fresh living environment, Department of Environmental Protection of Chiayi City government also efficiently improved the air quality in Chiayi City this year through inspection control and adjustment for improvement on the pollution caused by diesel vehicles, and reached the goal of pollution reduction and environmental protection based on the objects and spirits of “Air pollution control act”. The project focused on the diesel vehicles on the roads in Chiayi City through ways such as reporting by citizens and visual judgment by the smoke to inform diesel vehicles in the governing area to come for on-site testing. As for oil product random testing, it was processed through ways such as on-site oil drawing, on-road stop and search to control the illegal oil products which contains excess sulfur than standards. 1.Information and statistics date of this report is from 2009/2/18 to 2009/12/31. The basic analysis and figures of the testing is compiled as shown in Table 1. Progress of each task implementation is as shown in Table 2. The achievements and benefits are explained as follows: Dynamometer testing for diesel vehicles: This project has finished testing for 2486 diesel vehicles coming for on-site testing from 2009/2/18 to 2009/12/31. Among them, there are total 269 vehicles which failed the horsepower and smoke degree criteria with failure rate 11%. 2.As for oil product random testing, this project has totally finished 1744pcs of oil product random testing. There are 180pcs sent for testing. 1pc of the 180pcs which completed the test is failed with failure rate 0.6%. 3.As for on-road stop and search, this project has implemented the task for 511 vehicles. 112 vehicles among them failed the test with failure rate 21.9%. 4.This project implemented a 4 hour service of taking reservations of testing on holidays every two weeks. Vehicle owners do have needs for this kind of service and we will also continue providing holiday test reservations for citizens to utilize. 5.For the task of visual judgment on smoke, we have implemented the smoke visual judgment for a record of 1616 diesel vehicles. The screened vehicles for on-site testing are 1508 vehicles and 639 vehicles have come for testing. Including 63 vehicles coming for the second testing, it is total 702 vehicles which completed the testing. 18 cars of them failed the testing with failure rate 2.6%. 6.For the set-up of Environmental Protection Administration testing database connecting system, the database system connection set-up has been completed and information has been uploaded. 7.We held one guidance conference and one workshop respectively on 2009/4/22 and 2009/10/7. The main purpose is for the guidance of self management of diesel exhaust control, illustration for the dynamometer principle of diesel vehicles and horsepower testing, and explanation for bio-diesel to have participants more understand the strategy of diesel vehicle pollution control. 8.According to the calculation period and calculation method of the reply rate of the reporting mails from citizens to the Environmental Protection Administration in 2009, the statistics of receiving case reports from citizens during 2009/2/18~2009/12/31 in Chiayi City is 84 reported cases with replying rate 100%. 9.The achievements of implementing this project including forcing vehicles to come for testing, adjustment and repair for the second testing and obsolescence of old vehicles are estimated to reduce TSP, PM10 by 61.4 tons respectively.

Chiayi city,air quality,diesel cars