Examples of Naturally occurring background in a sentence
Naturally occurring, background concentrations of metals in soil exceed risk-based screening levels in some cases.
Naturally occurring background levels for PID monitoring range between 0.0 ppm and 2.0 ppm but can also fluctuate due to ambient conditions (e.g. nearby traffic exhaust, high humidity, excess moisture).
Naturally occurring background radiation is the ionising radiation within the environment that people are continuously exposed to.
Naturally occurring background pollutant concentrations for waters which exceed the otherwise applicable concentrations established pursuant to 314 CMR 4.05(5)(e)1.b. or c.
EPA Response: Naturally occurring background and other non- landfill sources may contribute to the elevated inorganic groundwater concentrations, but the data also indicates the landfill as the elevated source of inorganic compounds.
The background con- centration for a substance in soil shall be determined using a depart- ment−approved and appropriate method.Note: Naturally occurring background concentrations of arsenic in soil, for exam- ple, may be higher than the residual contaminant level for arsenic listed in Table 2.
Naturally occurring background radiation levels are typically low and would only present a radiological hazard when in concentrated form.
Naturally occurring background loading is a type of nonpoint source.
Naturally occurring background concentrations for metals may be eliminated from further consideration as COPCs, provided that on-site maximum concentrations of potentially site-related constituents are comparable to (equal to or less than) background levels.
Naturally occurring background concentrations of metals were established in a manner consistent with national guidance EPA has published for other pollutants (Buck et al., 2000).