To effectively reduce the air pollution problems caused by construction, the Environmental Protection Administration has promoted “Construction Site Pollution Control Reinforcement Program” since 1996 to reduce the pollution of all kinds of construction sites. In addition, the “Management Regulations for Construction Project Air Pollution Control Facilities” has been formally implemented since July 1, 2004 and therefore the regulations governing construction project air pollution control facilities are definite ever since. To improve the air quality of Chiayi City to improve the living quality of citizens, the “2021 Chiayi Effusion Pollutant Audit Control Program” is managed for the expectation of seizing, tracing of pollutant and counselling for the shortcoming improvement as well as for the goals of carrying out pollution control, prevention and air pollution reduction to keep environmental air quality of the city and enhance the living satisfaction or public.
With regard to the pollution control of construction sites, there 1,552 construction sites in emission and total 816.31 tons of effusion particles were generated, that was 456.95 tons reduced and 55.98% of reduction rate. Total 2,448 patrols were implemented. In term of implementation results, 107 construction sites were unsatisfactory to the managerial regulations, which are provided with counselling and traced continuously until the completion of improvement.
In respect of construction site counselling, one “Conference for the Reinforcement of Public Construction Air Pollution and Noise Control” was convened. The operators are requested to carry out construction management and must prepare environmental budget as sufficient to facilitate with various pollution control works, two “Conference for the Reinforcement of Public Construction Air Pollution and Noise Control” and 2 booth propagandas. 7 construction sites have CCTV installed; green construction materials used in 20 construction sites with about consumption in total 521.33 tons. The environmental paints are used in 33 sites with about consumption in total 43.33 tons, and THC reduction 17.106 tons. 21 construction sites are counselled to carry out no waste soil on ground, with total excavation volume was 32,162.3 m3 and 2,096 kg reduction of total effusion particles. Regarding the green fence, 45 green fences on construction sites were promoted. Among them, 12 plant fences with estimated total 3,922 kgs of effusion particles, TSP 1,094 kgs, PM10 607 kg, PM2.5 121.59 kg, CO2 29,490 kg reduction. There are also 21 constructions sites counselled for road adoption, with total length of street washing and sweeping 10,809.654 km and 135.806 tons of TSP reduction, 25.588 tons of PM10 reduction. Meanwhile, 22 construction site equipment surveys were completed to seize the pollutant sources.
For the handling of construction site petitions, there were total 126 controlled projects; 63 suspended particles cases and 63 noise cases. Among the suspended particle cases received, 51% was suspended particles from construction sites and 82.9% of motor equipment in noise cases. It will be deemed as repeated petition if 3 petitions or more aim at the same place. The construction unit of key project of this city “C611 Chiayi Urban District Elevated Railway and Plane Highway under the Bridge Project” is counselled to increase the water rinsing frequency to avoid suspended articles effusion during the work, continuous supplementation to the driving path and use construction measures with lower noise alternatively or incorporate with noise reduction measures. Through reinforcement of patrol over key constructions with much emission by classification system and cross department cooperation through “Chiyi Cleaning Air Promotion Committee”, the “air pollution and noise prevention facilities” shall be included in the budget of public construction and prepared in the budget allocation table item by item as satisfactory to the Regulations Governing and Air Pollution Prevention Facility Management on Construction Sites.”
Through the pollutant source control strategies and reduction for sustainable operation by solving the root cause, public may feel better as facing bad air quality season or routine construction work and further reduce the petitions by giving play to administrative efficiency and solving local problems from the assessment goals of EPA, pollutant reduction target of this city and innovative action. In view of assessment, the self-assessment score was 5.8 (full score 6.1), because most people work or study at home due COVID-19 and therefore the number of noise petitions was increased. Regarding the construction database quality review, the environmental budget could be further increased by the city. As to the goals of pollution reduction, the project has gradually completed against the reduction target. The content of proposal for innovative action is to activate the response device immediately after the occurrence of pollutant source incorporated with air quality micro sensor and automatic sprinkler within the construction area of “C611 Chiayi Urban District Elevated Railway and Plane Highway under the Bridge Project” to avoid expansion of pollutant source and further include the decoration work in the control of the city.