“Taiwan Air Quality Monitoring Network (TAQMN) of the Environmental Protection Agency (EPA) has established 76 Air Quality Auto-monitoring Stations, 2 moveable vans ，4 moveable stations, and 1 ultraviolet ray monitoring station located in A-Li Mountain. To evaluate the monitoring data form, EPA and EPB Air Quality Monitoring Stations is reliable and accurate. EPA has an authorized regular performance organization and an independent private sector to enforce quality checking for Air Quality Monitoring. The executing period has been started from March,2005 to December, 2006. This report is the performance results for 2006. There were four main working items of this project to be achieved in this year： 1. Annually performance audit of TAQMN (90 monitoring stations, including moveable vans). 2. Monthly performance regular check-up of TAQMN (from January to December,2006, this project has achieved 964 monitoring stations). 3. Annually performance audit of manual TSP Monitoring Stations for the local environmental protection bureaus (50 manual TSP monitoring stations). 4. Annually performance audit of air quality auto-monitoring stations for the local environmental protection bureaus (27 monitoring stations). The achievement of this year concludes as below: 1. Audit results of EPA air quality auto-monitoring stations (1)According to the models of monitoring instruments, this year, the satisfaction rate of Gas Pollutant Monitoring has achieved 98.2%. This is the best satisfaction in the four models of the monitoring instruments. The Mobile Diluting Rectification Instrument satisfaction rate is 86.7%, which is lower than last year. The total satisfaction rate 93.1% is lower than last year 93.8%. (2)According to the audit items of monitoring instrument, satisfactory rate of CO2 Monitoring is the lowest rate of 71%. The satisfactory rate 78% of Rain-Full instrument is the second lowest. The satisfactory rate 79% of Wind-Direction instrument is the third lowest. Except for these, other items have reached a over 80% satisfactory rate. (3)According to the audit results of monitoring stations, except for Jhong-Li station and moveable van 101, over 98% monitoring stations reach a satisfaction rate of 80%. (4)Analyzing the accuracy of each Air Pollutant Monitoring, generality gas pollution monitoring instrument has lower accuracy in low concentration than high concentration. CO2 is the most obvious. Except for CO2. The NOx instrument has lower accuracy than another gas pollution monitoring instrument, CO instrument has highest accuracy. (5)From the monitoring stations’ data for over the years, Mei-Nong station, Cian-Jin station and Cian-Jhen station have excellent results for 6 years. It shows that, these 3 stations keep higher maintaining quality and precise accuracy of monitoring data. In addition, San-Chong station and moveable van 101 presented negative Z factor for 5 years, it indicated that their audit satisfactory are lower than the average of all the other monitoring stations. 2. Regular Checking results of Air Quality Auto-Monitoring Station (1)From the result of regular check-up for all monitoring station, in the aspect of station failure, the unqualified rate of PLC system is 8.1%. In documenting faults, a unqualified rate of 5.5% was audited in maintain record. In monitoring analyzer’s faults, the unqualified rate of sampling system and filter from PM2.5 Instrument is 3.5%. In weather analyzer’s faults, the unqualified rate of acid rain-pH meter is 9.9%. (2)For monitoring data, HC instrument appears negative monitoring data. It’s occurring rate is 28.3%, is the highest. NOx seconds, it’s occurring rate is 10.0%. (3)With the checking results for a singular station, Ma-Gong station shows the most faults (47 faults), Lun-Bei station seconds(41 faults). (4)Further, observing the amount of repeatable faults of each monitoring station, Chong-Min and Chang-Hua and Chia-Yi station and moveable van 101 occupies the highest items . Besides, the repeatable faults from middle station in Taiwan is higher than south and north stations in Taiwan. (5)Over the past statistical checking results, it shows that, moveable van 101 is listed among the 10 disqualified stations during the year of 2002 to the year of 2006. Ban-Ciao and Lin-Yuan station are listed among the 10 disqualified station during the year of 2003 to the year of 2006. 3. Audit results for Air Quality Auto-Monitoring Stations of local environmental protection bureaus. (1)All Air Quality Auto-Monitoring Stations of local environmental protection bureaus reached a satisfactory rate over 80%. (2)There were 3 stations form Kao-Hsiung City are listed among the 7 disqualified stations in this year, the satisfactory rate is lower than other counties and cities. The Hou-Li station from Tai-Chung county has the lowest satisfactory rate in this year. (3)In the four types of monitoring instruments, the dusty pollutant monitoring instrument is better than the others. Its satisfactory rate is 96.3%. The total satisfaction rate 93.8% is lower than last year 94.7%. (4)According to the audit items of monitoring instrument, only 2 station has been audited of Acid Rain-Conductivity and dew point, but 1 station was dissatisfied. Expect for this, the NO2 transfer efficiency auditing satisfaction rate of 82% is the second lowest. (5)From the monitoring stations’ data for the pass 3 years, Hou-Li station of Tai-Chung county and Ai-Guo station of Kao-Hsiung city, have lower satisfactory rate than the average of all the other monitoring stations. 4. Audit Result of Manual Monitoring stations in Local Environmental Protection Bureaus (1)This year,have 6 station is dissatisfying in the examination of TSP flow rate. The total satisfactory rate is 88%, is lower than 98% in 2005. (2)As for the inspecting stations, we found faults occurred in Kao-Hsiung city , Tai-Tung county and Chia-Yi county. The satisfactory rate is 94%. The unqualified item is all for sampling machinery . (3)Total satisfactory of analysis lab is 91%. We found the drying box of Ping-Tung county and Tai-Nan county can’t maintain fixed humidity . (4) Over the past statistical checking results, it shows that Kao-Hsiung city, Kao-Hsiung county, Nan-Tou County,Tai-Chung County and Chia-Yi city achieved the best audit results form 1999 to 2006 year.

monitoring station,analyzer,quality assurance,satisfactory rate