The achievements of this annual project are stated as below:
For Chencily Auto-Monitoring Station, the data obtaining rates of the analyzers were all above 94%, whereas those of the meteorological equipments were above 99%. For the PM10 monitoring reports, Chencily, EPA Tainan and EPA Annan stations showed the significant season influences on PM10. The readings in summer were obviously lower than those in winter and the trends of the three Stations were identical. During the project period, from February 2007 to January 2008, PM10 counted for 23 episode days in total: 9 days at Annan station, 8 days at Tainan station and Chencily station had the least of 6 days. The highest value reached 208μg/m3. For the ozone (O3) monitoring reports, Chencily, EPA Tainan and EPA Annan stations had similar readings and the trends were also identical. During the project period, O3 counted for 23 episode days. Among them, Tainan station had the most of 20 days, Annan station stood at the second with 2 days, and Chencily station had the least of 1 days. The highest value reached 79.9ppb and mostly happened in summer, which showed the impact of sunshine. NOX and NMHC are the two major factors that form ozone (O3). Since they are mainly from the discharge of motor vehicle and motorcycle, it explains why Tainan station, which locates in urban area, had the most episode days.
The TSP results at the Manual Operation Monitoring Stations were complied with the air quality standard. From year 2002 to 2007, TSP values have been showing an identical trend, high in winter and low in summer. As for the analysis of TSP constituents, the concentration of Cl- was between 1.08~14.96μg/m3. The trends were identical, slightly higher in winter. The highest of 14.56μg/m3 occurred in 2004 and the lowest of 3.76μg/m3 did in 2002. The concentration of NO3- in TSP constituents was between 2.12~24.78μg/m3. The measurements over the past years showed a trend of high in winder and low in summer. The highest of 11.25μg/m3 occurred in 2003 and the lowest one of 8.96μg/m3 did in 2006. The concentration of SO42- in TSP constituents was between 4.91~42.72μg/m3. The highest of 17.26μg/m3 occurred in 2002 and the lowest of 11.23μg/m3 did in 2005. The concentration of Pb in TSP constituents was between 0.011~0.065μg/m3. The highest of 0.112μg/m3 occurred in 2002 and the lowest of 0.030μg/m3 did in 2005. The measurements of all stations were below the monthly mean (1.0 μg/m3) in accordance with the air quality standard.
The trends of dust fall at the Manual Operation Monitoring Stations were all similar. In the past years, the highest value was 11.69 tons/square km/month in 2004 and the lowest value was 4.23 tons/square km/month in 2001.
EPA inspection report showed that Chencily Auto-Monitoring Station achieved 88% in the satisfaction survey. Two flaws were pointed out and improved on the day of inspection. The station at Tainan Municipal Min-De Junior High School was selected for the inspection of Manual Operation Monitoring Station. The outcome was 100% satisfactory.
For the electronic billboard, a total of 292 advertisements were broadcasting. Among them, 178 were for Tainan EPB, which counts for 61%; 85 were for the Revenue Service Office; the rest was for Tainan City Government, National Tax Administration, etc. It certainly has provided an effective way to publicize the environmental protection policies.