For airport noise exposure purposes, an annual average of the daily day-night average sound levels is used. A sound doubles in loudness for every increase of ten decibels. The process for deicing aircraft usually involves glycols, which are mixed with hot water and sprayed on aircraft. A tool for decision making, it describes the positive and negative effects of the undertaking and lists alternative actions. A clear, colorless liquid that may exist in vapor form, which can cause respiratory irritation.
Ingestion can cause kidney failure, and can also be fatal.
Federal Aviation Administration. LTO cycle calculations include only the emissions planes create within 3,000 feet of the earth's surface, all of which affect ground-level air quality. Air pollution introduced anywhere within the mixing zone will affect ground-level air quality. Ozone can seriously affect the human respiratory system and is one of the most prevalent and widespread of all the criteria pollutants for which the Clean Air Act required EPA to set standards. Ozone in the troposphere is produced through complex chemical reactions of nitrogen oxides, hydrocarbons, and sunlight.