Exposure Assessment Case Study
limcoc
case_study1.docxExposure Assessment Case Study
(50 points)
Directions: After reading the Centers for Disease Control and Prevention case study, 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 http://www.cdc.gov/nceh/clusters/fallon/factsheet.pdf
1) Identify the agent:_____________________________________________________
2) What type of agent is described?
|_| biological
3) Source:
|_| anthropogenic |_| non-anthropogenic
|_| area |_| point
|_| stationary |_| mobile
|_| indoor |_| outdoor
4) Transport/carrier medium:
|_| air
|_| water
|_| soil
|_| dust
|_| 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:
|_| continuous |_| intermittent
|_| cyclic |_| random
|_| rare
9) Exposure duration:
|_| seconds |_| minutes
|_| hours |_| days
|_| weeks |_| months
|_| years |_| lifetime
10) Exposure setting:
|_| occupational |_| non-occupational
|_| residential |_| non-residential
|_| indoors |_| outdoors
11) Exposed population:
|_| general population
|_| population subgroups
|_| individuals
12) Geographic scope:
|_| site |_| specific
|_| local |_| regional
|_| national |_| international
|_| global
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