Background concentration definition

Background concentration means such concentration of that substance as is present in:
Background concentration means the same as “background quantity” as defined in paragraph 11 to Part 2 to Schedule1 of the PPC Regulations.
Background concentration means such concentration of that substance as is present in: for emissions to surface water, the surface water quality up-gradient of the site; or

Examples of Background concentration in a sentence

  • Background concentration of manganese in well MW-25 (1,806 µg/L) exceeds the GWQS, therefore well MW-25 has been classified as Class III groundwater rather than Class II groundwater.

  • Background concentration, the level of air contaminants that cannot be reduced by controlling emissions from man-made sources.

  • Background concentration unknown or available data is impacted by sources that have not yet achieved water quality based limits.

  • Background concentration is defined as the mean concentration plus the second standard deviation for any contaminant in any individual well.2. The number of significant figures used for all GWPLs determined by data evaluation and review of analytical method sensitivity.

  • Background concentration and deposition data may be displayed for each designated site or human health receptor by clicking on the “Check Background Levels” option in the data input page.


More Definitions of Background concentration

Background concentration means the concentration or level of a hazardous substance that exists in the environment at or regionally proximate to a facility that is not attributable to any release at or regionally proximate to the facility. A person may demonstrate that a hazardous substance is not present at a level that exceeds background concentration by any of the following methods:
Background concentration means the test substance concentrations in the whole-vehicle test chamber when the test vehicle is inside;
Background concentration means the concentration of a contaminant in ground water upgradient or a lateral hydraulically equivalent point from a facility, practice, or activity, and which has not been affected by that facility, practice, or activity.
Background concentration means that concentration of a constituent that is established as the background in accordance with subsection (d); and
Background concentration means the level of naturally occurring contaminant in soil.
Background concentration means the concentration of an air contaminant which is due to natural sources.
Background concentration means the concentration of an air contaminant which is due to natural sources. “Beryllium” means the element beryllium. Where weight or concentrations are specified, such weights or concentrations apply to beryllium only, excluding the weight or concentration of any associated elements.