Think about the emission sources that are in your community that you think could
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Think about the emission sources that are in your community that you think could be affecting you and/or your community. Examples of emission sources that are commonly encountered include vehicle exhaust, smoke from woodstoves, an industry, an accidental spill, or something else that you are aware of or that has been in the news such as mercury in fish or even COVID-19.
Then, select one (1) emission source and create an exposure pathway for one hazard that it is emitting. For example, vehicle exhaust contains nitrogen oxides, carbon monoxide, particulate matter, and other pollutants. Your exposure pathway only needs to include one (1) of these hazards. You can do this using text, a table, or an illustration you draw by hand or using the computer.
Your exposure pathway must contain the following elements (label them):
Source – What is causing the hazard to be present in the environment? Be sure to include the name of the hazard.
Media – How is the hazard moving from its source? Is it in the air, water, soil, food? Try to describe all the media that you think could be contaminated by the source.
Exposure point or Exposure Route – Where do people come into contact with the hazard? Do they only come into contact with it when they are outside? Or does it also enter their homes? Is it only when they are playing in a specific area? Or eating a specific food like fish? How does that hazard enter the body? It is from breathing (e.g. inhalation)? Eating food or drinking water (e.g. ingestion)? Is it only when they touch the contamination (e.g. dermal contact)?
Population – Who are the people that would be exposed to the hazard? Is it only children who are crawling on the ground? Or people who live close to the source?