In this discussion you will:

• Choose a contaminant (or a class of contaminants, e.g. petroleum hydrocarbons) and receptor(s).
• Prepare a schematic diagram using the Source-Pathway-Receptor approach. [You may want to use PowerPoint or another application to create your diagram and attach the image to the discussion post. To create an image from PPT, do a save as picture (image) file.]
• Explain various possible sources, transport and transformation mechanisms, and possible adverse effects.
• Discuss the need for this type of analysis.

Must have at minimum 300 words.

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