According the Environmental Protection Administration’s public notice of 95.12.12 “2007-2008 County(City) All Level Air Pollution Restriction Zoning Results” Taichung County ranks as level three restriction zone in both ozone and floating particle pollution substances, in the next five years there will be development projects including the second stage of Chung-Long Steel Industries, development projects of Taichung Technology Park Taichung Base and Ho-Li Base, and Shen-Gun-Fun-Jou Industrial Zone Development project operations, these increased numbers are likely to create an impact on Taichung’s air qualities, thus it is necessary to grasp the county’s tolerance capacity, through planning set Taichung county’s tolerable zone volume management solutions and strategies, in order to improve the county’s air quality.
(1) Taichung County pollution emission source characteristics and analysis
According the county’s 2007 base annual emission data, TSP are mainly emitted from vehicle raised particles and construction sides (both accounts for approximately 70% of total emission), SOX emissions are primary from factories(accounts for approximately 90% of total emission), NOX emission are mostly from factory and transportation vehicles (both accounts for 54% and 41%
respectively), NMHC emission are from factory point sources and plane sources accounting for 49%, transport vehicles and sources other than industrial emissions account for approximately 22% and 29% respectively; in addition, electrical power generation industry and steel industry are the main industries for larger pollutant emissions; regarding industrial zones, the most severe pollution zone of Taichung County is the Sea Zone of Taichung Harbor Special Designated Zone.
(2) New pollution source change trend grasp analysis
Future major pollution sources of the county that are within grasp include the Second Stage Chun-Long Steel Works, Taichung Technology Park Taichung Base and Ho-Li Base developments, and Shen-Gun-Fun-Jou Industrial Zone development project, it is estimated upon operation in 2013, by then TPS increase will reach 2589 metric tons, SOX increase will reach 4697 metric tons, NOX increase will reach 6605 metric tons, and NMHC increase will reach 4388 metric tons.
In regards to the analysis of the impact to the county’s air quality from major environment development projects, simulated results indicate that, in regards to the county’s three air quality measure stations, the increased pollutant emissions will increase the ozone peak level concentraion average of the simulated case by 2~6ppb, in regards to floating particles, PM10 concentration increase will mainly occur within the county’s township areas of Ho-Li, Fun-Yuan, Tai-Peng, and Ta-Li, as well as the areas of Go-Shin and Tsao-Tun of Nantou county, the daily average concentration level is between 6~10μg/m3.
(3) Steel industry emission standards amendment draft
Taichung county announced in 1999 “Taichung County Steal Industry Air Pollutant Emission Standards”, since then it has been ten years, in response to the planned standard procedures of Chun-Long Steal Works iron and steal furnace establishment within the county’s Taichung Harbor Special Designated Zone, its estimated pollution emission will be significantly more than the traditional electric arc furnace steal refinement production process, thus the current plan is proposed according the current steal industry restrictions and concerns for current feasible control technology advancements, in order to make adjustments and amendments to the current insufficient rules and regulations, it is intended by making amendments to the emission standards to effectively decrease pollutant emission concentrations, in order to improve the county’s air quality problems, the draft content includes measures for sintering factories, coking factories, blast furnace factories, converter factories, electric furnace factories, and hot rolling factories, by particle pollutants, sulfur oxide compounds, and nitrogen oxide compounds to draft feasible and stringent recommended emission concentration restriction standards, in addition to targeting sintering factories and electric factories and draft dioxin stringent restriction standards, it is proposed to decrease the current 0.5ng-TEQ/Nm3 to 0.4ng-TEQ/Nm3, as for designs of coal and iron ore pile zones with projected area of 1000m2 or piling volume design of over 3000 m3, it is recommended to regulate piling to storage facilities within closed building structures.
(4) Draft of future five-year key restriction task of Taichung county air pollution foundation
In regards to fixed pollution sources, Taichung Harbor Zone Tank VOC divergence problem, Taichung Technology Park BOC and harmful air pollutants, and powder-like substance divergence of Taichung Harbor materials load-unload stack process zone are the key restriction tasks, and in regards to the county’s two key industries – steel and power generation industries, decreased volumes can be done through more stringent standards amendments. In regards to mobile sources, including through intercepted examination, search and patrol operations, in order to raise motor cycle regular examination and examination participation rates as well as decreasing diesel vehicle illegal petrol product usage and emission fail cases, it is also possible through subsidy measures or coordinating relevant motor transport authorities, c-work and plan a green transport net. In regards to divergent pollution sources, in response to the county’s many large scale development project constructions in recent years, construction site management methods conformity rate increase, raise street cleaning operations performance, and bare surface and dirt and rock transportation operations as the key execution areas of restrictions.
(5) Air pollutant tolerance total volume management solution draft
In consideration for the county’s current ozone and floating particles are both level three restriction zones, and that there are many pending future major development projects going into operation, thus on the basis of necessary strategy implementation for air quality improvements, other than reinforcing execution of air pollution restriction key tasks, it is essential by spirit of total volume restriction or management, estimate the county’s future emission volume changes and whether it will exceed tolerable capacities, and further implement relevant feasible zone total volume management measures and solutions in order to improve the county’s air quality.
Currently the Taichung county tolerance volume management system and solution estimate is complete, and a seminar of professionals and academics has been held, the initial plan for the current stay is to refer to the essence of Environment Protection Administration’s tolerance volume management, and use the county’s boarder as the premise, set the Taichung pollutant tolerance volume management system, in order to achieve the Environment Protection Administration’s set central district air quality zone PSI>100 ratio less than 1.26% and the county’s air pollution restriction zone to raise to level two as the goal), and use this target to estimate and set the county’s various pollutant allowed emission level (PM1:16797metric tons, SOX:21726metric tons, NOX:53765 metric tons, NMHC:46491metric tons), as well as draft the county’s future five year enforceable and promotable related strategies, including solution one: improved execution of current existing restriction strategies; solution two: co-work with Environment Protection Administration’s existing restriction measures; solution three: execute the county’s specially designated pollution category and local improved management measures (such as power generation and steel industries stringent emission standards), after estimated calculations, simultaneously executing each of the strategies of solutions one, two and three, it is estimated in year 2013 after the restrictions the net emission volume should be under the allowed emission levels target, in other words, the county’s ozone and floating particles pollutant level should meet the concentration value of air quality standards level two in 2013 (restriction level two standards).
In addition, in regards to future economy developments, there could be new additions to major development constriction applications being set up, for this it can be considered to create zero emissions verification system, that is, if new additional major development project’s annual target increased emission levels is over the county’s tolerance volume level, then request should be made at the environmental estimations stage for new set pollution sources in the increased volume aspect, seek the county’s other pollution sources through replacement of old for new restriction equipments and proceed with emission redemption reduction, and reach the zero emission/zero increase target.
Further, in order to ensure pollution reduction and air quality targets are achievable, after the various restriction strategies have been implemented, it is necessary to conduct annual follow up examinations on the air quality and emission levels whether the target is achieved, if the target is not met, then analysis should be conducted on whether the task implementation effect is poor, or is it other factors such as weather that lead to target not met, and then further improve work execution level and effectiveness, or make amendment to the content of the county’s tolerance volume management strategy.
9. Current Stage Plan Completion Percentage: 100%
