GCU HLT555 2019 AUGUST Week 3 Assignment Latest

Question # 00733822 Posted By: rey_writer Updated on: 08/14/2019 08:54 AM Due on: 08/14/2019
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HLT555 Environmental Health

Week 3 Assignment  

Exposure and Risk Assessment

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.

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

  1. Source:

 anthropogenic                    non-anthropogenic 

 area                                                         point

 stationary                                              mobile

 indoor                                                     outdoor

  1. Transport/carrier medium:

 air

 water

 soil

 dust

 food product item

  1. Exposure pathways: 

 eating contaminated food

 breathing contaminated air

 touching a contaminated surface

 drinking contaminated water

  1. Exposure concentration:

 mg/kg (food)                       mg/litre (water)

 ug/m3 (air)                           ug/cm3 (contaminated surfaces)

 % by weight                         fibres/m3 (air)

  1. Exposure route:

 inhalation                                              dermal contact

 ingestion                                               multiple routes

  1. Exposure frequency: 

 continuous                           intermittent 

 cyclic                                                        random

 rare

  1. Exposure duration:

 seconds                                                minutes

 hours                                                      days

 weeks                                                     months

 years                                                       lifetime

  1. Exposure setting:

 occupational                        non-occupational

 residential                                             non-residential

 indoors                                   outdoors

  1. Exposed population:

 general population

 population subgroups

 individuals

  1. Geographic scope:

 site                                                           specific

 local                                                         regional

 national                                                  international

 global                                                                 

 

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.

Directions: Use the case study 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,” located on p. 154 of the textbook

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. 

 

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