This assignment is in two parts:

Part 1: Exposure Assessment Case Study

Read “Cross-sectional Exposure Assessment of Environmental Contaminants in Churchill County, Nevada” by the Centers for Disease Control and Prevention (2003). Use this case study to complete the Exposure Assessment form.

Part 2: Risk Assessment Case Study

Read “Illness Associated with Drift of Chloropicrin Soil Fumigant into a Residential Area – Kern County, California, 2003.” Use this case study to complete the Risk Assessment assignment.

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Please see the attachment

(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

|_| chemical

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