Summary：
This project has started since 7th December, 2018.
The project scope included
operation, maintenance and calibration of equipment at Air Quality Monitoring Station and renewal of the equipment of one station;
noise monitoring and case handling;
mobile van monitoring;
maintenance of PM2.5 continuous monitoring stations;
maintenance of digital signage;
maintenance of acid rain stations and monitoring of Simple Air Quality Monitoring network.
The achievements of project were summarized as below:
1)60 Air Quality Monitoring Station were performed scheduled monthly maintenance and 60 TSP samples had been completed.
2)Flow rate calibrations were completed on 28th December, 2018. The result regression coefficient was 0.9999 which comply with the standard. (The regression coefficient shall be larger to 0.999)
3)Multi-point calibrations were performed on 8th January 2019, 10th April 2019. The results were fulfill with the standard requirements including flow accuracy shall be less than 5 % difference and regression coefficient shall be larger to 0.995.
4)Every half of the month, one point calibrations were performed before and after sampling at each station. The flow accuracy shall be less than 7% difference.
5)The equipment of Xiluo Air Quality Monitoring Station had renewed, including high volume samplers, voltage regulators and dust sampling platform. Before the update, the error was mostly between 1.01-2.72 (%), and the error after update was 0.08-0.85 (%), indicating that the error after update was significantly smaller. In addition, the update device could make the sampling process smoother and reduced the manpower and time consumption.
6)TSP：The monitoring results at all stations met the air quality standards(TSP 24 hour 250 μg/m3). The highest(57 μg/m3) geometric average concentration was found at Beigang station. And the lowest(39 μg/m3) geometric average concentration was found at Jinhu station. During the monitoring period, high values(110 μg/m3) were discovered at Beigang Station because of the consolidation of farmland and the cultivation of crops next to Beigang Station, resulting in higher concentrations.
7)Dustfall：The highest(9.04 ton/km2/month) average concentration was found at Jinhu station. And the lowest(2.85 ton/km2/month) average concentration was found at Huwei station. Among the single station monitoring values, the highest value was found in Xiluo Station in February 2019, and the lowest value was found in Xiluo Station in December 2018.
8)Ambient and traffic noise monitoring have been performed 40 days and all results fulfilled the limit. According to historical monitoring data, in ambient noise monitoring was easier to detect high values. In traffic noise monitoring, monitoring values were more concentrated because they were less disturbed by external factors.
9)6 times maintenances were completed at fixed noise monitoring station. The sources of noise were proposed. During weekdays, the noise would be come from high flow of vehicles at peak periods and operation of machine during gardening. During the weekend, the sources would be park visitors and temporary exhibitions.
10)Checking of noise level from vehicles has been performed 21 times and checked 621 vehicles. 20 vehicles were requested to perform further noise assessment in which 15 vehicles passed and 5 vehicles unqualified.
As selection by police before further assessment, the rate of unqualified was reach 25 % and average exceed 3.8 dB of limit.
11)Completed 6-day mobile van air quality monitoring in Douliu Industrial Park, surrounding area of Yunlin Technology-based Industrial Park and surrounding area of Dounan Town. The monitoring results met the air quality standards, except that ozone had twice been affected by the atmospheric environment and was above the maximum eight-hour average.
12)Completed the maintenance works of 12 PM2.5 continuous monitoring stations. The stations are in good conditions, and monitoring is kept going.
13)Implemented 6-time monthly maintenance on digital signage. 47 updates on broadcasting content had been completed.
14)Implemented 6-time monthly maintenance on the Xiluo acid rain station. The station is in good condition, and monitoring is kept going.
15)Maintained 32 simple air quality monitoring stations and 2 sets of anemometers in Douliu Industrial Park, and Monthly data capture rate was over 85 %.
