Other samples had concentrations below the detection limit. Refer to the Beginning of the Environmental Contamination and Other Hazards section for a description of how contaminants of concern are selected. Refer to the Beginning of the Environmental Contamination and Other Hazards section for a description of how contaminants of concern are selected. Those values usually appear in the Environmental Contamination and Other Hazards and the Public Health Implications section of this document. Health guidelines, which usually appear in the Public Health Implications sections of this public health assessment, provide concentrations used to estimate a dose at which health effects might or might not be observed.
Quantitative units express the amount of contaminant that has been detected in specific media.
AWQC Ambient Water Quality Criteria are the recommended maximum permissible pollutant concentrations protective of aquatic organisms. They are federally enforceable. CSF A Cancer Slope Factor is usually, but not always, the upper 95th percentile confidence limit of the slope for the dose-response curve. When data permit, slope factors listed in IRIS are based on absorbed doses, although many of them are based on administered doses. An EMEG is the concentration of a particular contaminant in water, soil, or air at which daily human exposure is unlikely to result in adverse noncarcinogenic effects.