I wanted to share some very interesting findings from Clear Roads. They have completed research looking at the Toxicity of Deicing Materials to life in lakes and streams. I think the results will help with your decision making process for these materials. These were based on toxicity to fish in fresh water environment. Calcium Chloride w/BOOST* ranked very well in the study. I included the weblink at the end of the post, if you would like to review data or check out the webinar.
Project Number: Clear Roads 11-02
Research was done by Barr Engineering Company
The winter maintenance community has information on the relative corrosive properties of the deicing chemicals, liquid and solid, in use throughout North America, (MgCl2, NaCl, “beet juice” etc.). However, there is little information available regarding the toxicity of these various compounds, especially to the aquatic environment.
This project evaluated the toxicity of deicing chemicals in the following base chemical categories: Magnesium Chloride, Calcium Chloride, Sodium Chloride, Potassium Acetate and Glycerol. As a result, the researchers were able to develop a ranking of the chemicals according to toxicity.
A final report and a concise summary of the toxicity rankings that helps winter highway maintenance managers consider both expected levels of service and potential harm to the environment when selecting a deicer to use.
This final presentation webinar took place on December 3, 2013.