| 英文摘要 |
Mobile pollution sources are one of the leading factors in metropolitan air quality. In order to further perfect mobile pollution source control operations, the Environmental Protection Department of New Taipei City has established the New Taipei City Motorcycle/Motorscooter Pollution Source Audit and Control Program (2017-2018), which was contracted to Envimac Technology and Consultants Corporation. All tasks of the program, as calculated from November 1, 2017 to December 31, 2018, have reached 100.0% implementation status. The work results from the finished plan are thus summarized and explained below:
In the course of the audit and control operations, a total of 3,780 vehicles underwent inspection. Of these, 730 two-stroke vehicles were registered in New Taipei City. In terms of inspections, 4,006 vehicles were subjected to unscheduled testing, and 3,279 underwent returning inspections. 36 vehicles were rejected and had their registrations canceled. The completed improvement rate was 82.8%. Regarding results of the roving inspections, 11,190 vehicles were subjected to unscheduled roving inspections. Of these, 8,441 were unscheduled roving inspections of vehicles registered in New Taipei City. 6,005 vehicles completed improvements, for a completed improvement rate of 71.1%. A total of 502,909 license plates were identified, among which there were 373,765 vehicles registered in New Taipei City, for 74.3% of the total. Of 129,871 vehicles subjected to unscheduled testing, 95,357 were registered in New Taipei City; these received notifications regarding deadlines on making improvements to double registrations, and those who did not make improvements were reported in accordance with the law.
With regards to guidance in clean areas, the clean areas include the special scopes of the Low-Carbon Living Areas (Ruifang, Pingxi, Shuangxi and Gongliao) and Metropolitan Clean Areas (Banqiao, Sanchong, Zhonghe and Xinzhuang), and the entirety of Linkou and Bali. In these
執行成果摘要
IV
areas, inspection frequency was at least once per month, and at least twice a month for license plate identification. The same scale of operations and methods was planned for execution this year in the four administrative zones of Tucheng, Shulin, Sanxia, and Yingge, where Air Quality Maintenance Areas were planned. These areas include the region near the Shulin Train Station and Fuzhou Bridge; the area near the MRT in Tucheng; and the Old Street area in Sanxia. Yingge is primarily a tourist area, and thus has no specific hub of activity.
In order to get a sense of the air quality and traffic characteristics of Yingge, analysis and aggregation were performed on the air quality reading data from the collected Yingge area air quality micro-sensors. Traffic levels were then investigated, and air quality data was subjected to observation. The relationships between traffic levels and air quality was monitored and calculated for weekdays. Observation showed that PM2.5 concentrations recorded by micro-sensors, and result trends from the EPA Taoyuan and Guanyin monitoring stations, showed peaks at night; and that the relationship between air quality and traffic levels was not especially significant. On holidays, it was observed that the PM2.5 concentrations recorded by air quality micro-sensors, and results trends from the EPA Taoyuan and Guanyin monitoring stations, were similar. The stations all showed continued low concentrations from the middle of the night to before noon. After 12pm, there was a significant increase in concentrations, which continued to accumulate, then reaching a peak at night. The relationship between holiday air quality and traffic was less significant than that for weekdays; at 7am, there was significant traffic activity, with the highest daily traffic level occurring at 5pm, and PM2.5 had a significant increase beginning at 12 noon.
As for mobile source exhaust quantity estimation and the scheduled testing enhancement strategy, mobile source exhaust quantity estimation underwent calculation using the transportation-mode TRTS-4S and the EPA's TEDS9.0 online exhaust coefficients to determine air pollution
執行成果摘要
V
exhaust amounts for New Taipei City in 2017. In estimation and comparison of total air pollution exhaust quantities, 2016 and 2017 showed 114,944 and 112,895 metric tons, respectively. 2017 showed a decrease of approximately 2% from 2016. The three main emissions were still CO, NOX and THC. The primary causative factor in this was incomplete engine combustion, acceleration/deceleration, and the relative ease of increased emissions at high combustion temperatures. Additionally, there was no significant change for 2016-2017 air pollution contributions from the various vehicle types. The primary contributors of CO, THC and NMHC were small personal gasoline-powered passenger vehicles and four-stroke motorcycles/motorscooters, which accounted for approximately 80% of this type of air pollution emissions. Approximately 90% of lead (Pb) contributions were from small personal gasoline-powered passenger vehicles and four-stroke motorcycles/motorscooters. PM2.5, NOX, SOX, PM10 and TSP were primarily emitted by small diesel-powered cargo vehicles and small personal gasoline-powered passenger vehicles.
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