RISK ASSESSMENT AND MANAGEMENT

Risk Assessment

Steps in Risk Assessment

Risk Management

1. Hazard Identification

Key question for hazard identification:
Is it a carcinogen or not?

Scope of the identification problem

Questions in Hazard Identification

2. Exposure Assessment

Who’s Exposure?

Example – methylene chloride (MC) in soil

3. Quantitative Toxicological
    Assessment

Non-Cancer Toxicity
(continued)

Derivation of Reference Dose (RfD)

Example – methylene chloride RfD

Only if the chemical is a
“carcinogen”

Uncertainties in low-dose extrapolation methods

Linerized Multistage Model

Methylene Chloride Slope Factor

4. Risk Characterization

Example – methylene chloride

Risk assessment is done!

Rules of thumb

Cost-Benefit Analysis

Approaches to benefit analysis

Risk Perception

Risk Perception (continued)

EPA's Seven Cardinal Rules of Risk Communication

Guide to Ineffective Risk Communication

Guide to Ineffective Risk Communication (continued)

Guide to Ineffective Risk Communication (continued)

Bottom Line