Potential Pathways
Pollutant Pathway
1.Nitrate – N Leaching & Runoff
2.Ammonium – N Surface water runoff & Aerial deposition
3.Phosphorus Surface water runoff
4.Pathogens Surface water runoff
5.Organic Matter Surface water runoff
6.
PRESENTER NOTES
Key Discussion Topics
1.   Ammonia volatilization and deposition provides an additional pathway by which ammonia can move to surface water.
2.   In addition, all contaminants can be transported with runoff down poorly designed well casings and through the soil by macropore flow to shallow ground water or tile drains.
Discussion Question:

References
LPES Lesson 32:  pages 3-4.