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Step 1.5 Using Comparison Values

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ATSDR Values

ATSDR’s comparison values are based on

Chemical-specific toxicologic information derived from human and animal studies.
The conservative assumption that a person will come in contact with the chemical every day throughout the exposure period.

Some available comparison values are

ATSDR

EMEG (environmental media evaluation guide)
CREG (cancer risk evaluation guide)
RMEG (reference dose media evaluation guide)

EPA

EPA maximum contaminant level
Health Advisories for Drinking Water
EPA Region III Risk-Based Concentration Tables
EPA soil screening levels
National Ambient Air Quality Standards

Other

Food and Drug Administration advisories
state and local standards

Calculating an EMEG for Aroclor 1254 in soil for an adult

formula for calculating and emeg

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