1. Hazard Identification: The purpose of this step is to determine some of the adverse
factors caused by exposure to some receptors, and provide strong evidence to demonstrate
exposure.
2. Dose–response Assessment: The purpose of this step is to document the relationship
between dose and toxic effect.
3. Exposure Assessment: The purpose of this step is to calculate a digital assessment of
exposure or dose.
4. Risk Characterization: The purpose of this step is to summarize and integrate information
from the preceding steps to synthesize an overall conclusion about risk.