Aug 14, 2009 | Glossary
Abbreviation for parts per million. A unit of concentration used to measure pollutant levels.
Aug 14, 2009 | Glossary
Acronym for Reasonably Available Control Technology.
Aug 14, 2009 | Glossary
Abbreviation for parts per billion. A unit of concentration used to measure pollutant levels.
Aug 14, 2009 | Glossary
Any material that exists as solid or liquid in the atmosphere. Particulate matter may be in the form of fly ash, soot, dust, fog, fumes, etc. Small particulate matter, or PM10, is less than 10 microns in size (about one-eighth the diameter of a human hair) and is too...
Aug 14, 2009 | Glossary
A State plan proposed to the AQCC reduce ozone levels in the Denver/North Front Range area by 2010.
Aug 14, 2009 | Glossary
Ozone is a colorless gas with a sweet odor. Ozone is not a direct emission from transportation sources. It is a secondary pollutant formed when hydrocarbons (HC) and nitrogen oxides (NOx) combine in the presence of sunlight. Ozone is associated with smog or haze...
Page 15 of 22« First«...10...1314151617...20...»Last »
