Regional background definition
Regional background means the concentration of a contaminant within a department- defined geographic area that is primarily attributable to diffuse sources, such as atmospheric deposition or storm water, not attributable to a specific source or release. See WAC 173-204-560(5) for the procedures and requirements for establishing regional background.
Regional background means the concentration of a contaminant within a geographic area defined by the Department, that is primarily attributable to diffuse sources, such as atmospheric deposition, and not attributable to a specific source or release.
Regional background means the concentration of a contaminant within a department-defined geographic area that is primarily attributable to diffuse nonpoint sources, such as atmospheric deposition or storm water, not attributable to a specific source or release. Regional background is generally expected to be greater than or equal to natural background, and less than area background as that term is defined in WAC 173-340-200.
Examples of Regional background in a sentence
Regional background (ambient) traffic growth was estimated using data from the Port travel demand model, which includes cumulative Project traffic growth.
More Definitions of Regional background
Regional background means the concentration of a contaminant within a department defined geographic area that is primarily attributable to diffuse sources, such as atmospheric deposition or storm water, not attributable to a specific source or release. (WAC 173-204-505(16))
Regional background means the concentration of a contaminant within a department defined geographic area that is primarily attributable to diffuse sources, such as atmospheric deposition or storm water, not attributable to a specific source or release.
Regional background means the concentration of a contaminant within a department-defined geographic area that is primarily attributable to diffuse sources, such as atmo- spheric deposition or storm water, not attributable to a spe- cific source or release. See WAC 173-204-560(5) for the pro- cedures and requirements for establishing regional back- ground.