A Background Level is
1. The Concentration of a substance in an Environmental media (air, water, or soil) that occurs naturally or is not the result of human activities.
2. In exposure assessment the concentration of a substance in a defined control area, during a fixed period of time before, during, or after a data-gathering operation..
List of books: Background,Level
Air Pollution is the presence of contaminants or Pollutant substances in the air that interfere with . . . Read More
A monitoring is In EMAP, the periodic collection of data that is used to determine the condition of ecological . . . Read More
An activator is a substance that is used to increase the rate or efficiency of a chemical reaction. E. . . . Read More
A Pollution is the Clean Water Act (_502.19) defines Pollution as "the [hu]man-made or [hu]man-induced . . . Read More
A Bacteria is (Singular: bacterium) Microscopic living organisms that can aid in Pollution control by . . . Read More
An Affected Public is ; - 1. The people who live and/or work near a Hazardous Waste site. ; - 2. The . . . Read More
Land, sometimes referred to as dry land, is the solid surface of the Earth, that is not covered by water. . . . Read More
A Concentration is the relative amount of a substance mixed with another substance. An example is five . . . Read More
A Contamination is Introduction into water, air, and soil of microorganisms, chemicals, toxic substances, . . . Read More
|Activity Pattern Data||■■■■■|
An Activity Pattern Data is in an inhalation exposure assessment, activity pattern data depict both the . . . Read More