| 英文摘要 |
Checking operations targeting stationary pollution source fugitive control list within Hualien county were carried out, 1,211 checking were done in total, with 1,126 of it completed regulatory compliance checking, giving regulatory compliance rate of 98.05%; Co-operative negotiations with rock soil and ready mixed concrete industry were being held seasonal , 291 and 81 cases of negotiations were made respectively; Dump truck’s pollution photographic evidence taken 56 times , tracking 676 trucks in total, photographic results showed that 14 trucks’ wastewater collection pipe failure, which has been resolved now; On promoting road adoption program, 79firms participated in adoption, road adoption length summed up to 60.78km, cleaning road lengths up to 34,817km; Project inspection control targeting harbor and Heping area are done 12 times respectively, each being inspected 72 times and 284 times, inspected firms were demanded improvement within specific period; About dump trucks automatic vehicle identify system, the system recognized 55,301dump trucks at the exit/entrance in harbor area, while precisely identified 48,305 of it, giving an identification rate of 87.35%, with 1 vehicle involving traffic violations on failing to dropping down cover net under 15cm, the error has been repaired by now. Vehicle identify system were installed at Fengping River 、Shoufeng River 、Matai'an River, in total monitored 108,337 dump trucks, precisely identified 93,009 of it, giving a total identification rate of 85.85%, with no discovery of traffic violations.
In order to grasp the day of ozone events in Hualien County and formulate appropriate strategies, in this project we use the Air Quality Model (Taiwan AirQuality Model, TAQM) to build an ozone simulation forecast system for Hualien County to forecast the ozone variation in Hualien County for the next three days and make recommendations based on the forecast results. In order to improve the forecast accuracy, we uses actual survey results of emission sources in the county and the Continuous Emission Monitoring Systems(CEMS) data. In addition, the emissions in East Asian we adjusted are based on recent literature. This system successfully predicted 3 ozone events in this year (8hr average> 70ppb), and there is no missing report. According to the results of forecast analysis, we found that the average overseas transmission in ozone events during 10-17 accounted for up to 76%. The observations at the observation station also showed the same trend.
This year, according to the forecast results of the model simulation system, we coordinated the promotion of related strain reduction measures, and then applied the model to evaluate the reduction benefits. According to the cases of this year, we found that various strain work can reduce the average ozone concentration by about 0.67ppb (0.9%); In addition, the eight-hour(10-17) average overseas transmission of the three events accounted for about 76%. Among them, the controllable anthropogenic emission reduction limit was about 4.2% (3.08ppb), indicating that the reduction of local pollution for reducing ozone concentration was limited.
Therefore, in response, the notification to the public should be taken into consideration to reduce exposure. It is recommended that in the future, social or communication software can be used to establish an official account to proactively notify the public of the forecast results. This year, 4 expert consultation meetings were held to revise various contingency measures on a rolling basis, and a briefing on the contingency mechanism was held to coordinate the contingency actions that the relevant plans should be implemented on the day of the event.
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