Part 1: Exposure Assessment Case Study
Directions: After reading the Centers for Disease Control and Prevention case study attached, answer the following questions.
Case Study: “Cross-sectional Exposure Assessment of Environmental Contaminants in Churchill County, Nevada” by the Centers for Disease Control and Prevention.t
1) Identify the agent:_____________________________________________________
2) What type of agent is described?
4) Transport/carrier medium:
___food product item
5) Exposure pathways:
___eating contaminated food
___breathing contaminated air
___touching a contaminated surface
___drinking contaminated water
6) Exposure concentration:
___mg/kg (food) ___mg/litre (water)
___ug/m3 (air) ___ug/cm3 (contaminated surfaces)
___% by weight ___fibres/m3 (air)
7) Exposure route:
___inhalation ___dermal contact
___ingestion ___multiple routes
8) Exposure frequency:
9) Exposure duration:
10) Exposure setting:
11) Exposed population:
12) Geographic scope:
Part 2: Risk Assessment
Directions: Use the case study attached to provide answers to the following questions.
Case Study: “Illness Associated with Drift of Chloropicrin Soil Fumigant into a Residential Area—Kern County, California, 2003,”
1. Issue Identification
a. What is causing the identified problem?
b. Why is the problem a problem?
c. How was the problem initially identified?
d. What are the public perceptions of the hazard?
2. Hazard Identification
a. What types of adverse health effects might be caused by the problem?
b. How quickly and for what duration might the problem be experienced?
3. Dose Response Assessment
a. Evaluate both qualitative and quantitative toxicity information to estimate the incidence of adverse effects occurring in humans at different exposure levels.
4. Exposure Assessment for the Relevant Population
a. Determine the frequency, magnitude, extent, duration, and character of exposures to the hazard.
5. Risk Characterization
a. Detail the nature and potential incidence of effects for the exposure conditions described in the exposure assessment.
Helpful link on Risk Assessment: http://oehha.ca.gov/media/downloads/risk-assessment/document/hrsguide2001.pdf
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