- 行业: Government
- Number of terms: 3992
- Number of blossaries: 2
- Company Profile:
A term used in risk assessment. An exposure level at which there are no statistically or biologically significant difference or severity of ant effect between an exposed population and a comparable non-exposed population.
Industry:Pollution control
A rule-making concept whereby approval of a new or modified stationary source of air pollution is conditional on the reduction of emissions from other existing stationary sources of air pollution. These reductions are required in addition to reductions required by best available control technology. For information please go to our New Source Review Emission Reduction Credit Offsets website.
Industry:Pollution control
A type of hydrocarbon, such as benzene or toluene. Some aromatics are toxic.
Industry:Pollution control
A type of air emission monitoring system installed to operate continuously inside of a smokestack or other emission source.
Industry:Pollution control
A three-dimensional photochemical grid model designed to calculate the concentrations of both inert and chemically reactive pollutants in the atmosphere. It simulates the physical and chemical processes that affect pollution concentrations.
Industry:Pollution control
A term used to describe the "best" measures (according to U. S. EPA guidance) for controlling small or dispersed sources of particulate matter and other emissions from sources such as roadway dust, woodstoves, and open burning.
Industry:Pollution control
A term used in the context of air quality management to describe a hydrocarbon's ability to react (participate in photochemical reactions) to form ozone in the atmosphere. Different hydrocarbons react at different rates. The more reactive a hydrocarbon, the greater potential it has to form ozone.
Industry:Pollution control
A term used in risk assessment. It is the concentration at or below which no adverse health effects are anticipated for a specified exposure period.
Industry:Pollution control
A term used in risk assessment. An exposure level at which there are no statistically or biologically significant increases in the frequency or severity of adverse effects between an exposed population and a comparable non-exposed population.
Industry:Pollution control
A term referring to chemical reactions brought about by the light energy of the sun. The reaction of nitrogen oxides with hydrocarbons in the presence of sunlight to form ozone is an example of a photochemical reaction.
Industry:Pollution control
