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4B. Activity: Road salting

Questions for Road Salting and Chloride levels map.

 

  1. Which direction is the down gradient (where are the highest points and where is the lowest point)?

 

  1. What trend is apparent when one compares areas close to roadways with more remote areas?

 

 

  1. What do you think is the reason for high Chloride levels at both Wood Pond and Ely Pond?

 

  1. Why do Chloride levels above Hart Marsh on Rte. 44 decrease as you follow the outflow to the wetland between Mountain and Flagg Roads?

 

 

  1. Does the Chloride level decrease further as you cross Trout Brook Drive and follow Trout Brook back towards Interstate 84?

 

  1. Is it a good plan to allow the construction of the proposed Interstate 291 interchange in the indicated location?  Explain.

 

 

  1. Is road salting a point source or non-point source of contamination?

 

 

  1. What are the reasons for road salting from an Insurance Company’s position?

 

 

  1.  What are the reasons for road salting from a Public Health viewpoint?

 

 

Chemical Connections

 

  1. What are the reasons for road salting from a chemical viewpoint?

 

 

  1. Why does salt dissolve in water?

 

 

  1. What is a conductivity test?

 

Extension Activity

 

    1. Design a study to examine the effect of road salting in your area.

 

 

Map