New air quality standard.The state Air Resources Board has scheduled a hearing this week to solicit input for a new tougher standard for nitrogen dioxide nitrogen dioxide n. A poisonous brown gas, NO2, often found in smog and automobile exhaust fumes and synthesized for use as a nitrating agent, a catalyst, and an oxidizing agent. Noun 1. emissions. Nitrogen dioxide is commonly found in car exhaust Exhaust may refer to: In mathematics:
adj. Existing, taking place, or designed for use off paved or public roads or in rugged terrain: off-road sports such as snowmobiling. engines, power plants and makers of heaters and generators. The ARB has long had a limit for nitrogen dioxide emissions of 0.25 parts per million parts per million mg/kg or ml/l; see ppm. for one hour; it was last reviewed in 1992. Since then, new information has come out on the health impacts of these emissions on children. As a result, ARB staff has recommended lowering the maximum concentration for one hour to 0.18. Also, a new annual average concentration of 0.03 parts per million would be established. The hearing is May 11 in El Monte El Monte (ĕl mŏn`tē), city (1990 pop. 106,209), Los Angeles co., S Calif.; inc. 1912. A residential, industrial, and commercial city in the San Gabriel Valley, El Monte manufactures furniture, electronic equipment, semiconductors, . For more information, log on to the board's Web site at arb.ca.gov/research/aaqs/no2-rs/no2rs.htm#new. |
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