After reading the Centers for Disease Control and Prevention case study attached, answer the following questions. “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? ___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 Use the case study attached to provide answers to the following questions. “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: