8,254
edits
Changes
Jump to navigation
Jump to search
mLine 8:
Line 8:
Line 16:
Line 17:
[[File:Snow_filter_strip.png|thumb|Snow being stored on a filter strip in Markham, ON]]
→De-icing Salt
{{:De-icing}}
{{:De-icing}}
[[File:Snow_filter_strip.png|thumb|Snow being stored on a filter strip in Markham, ON]]
Sodium and chloride ions in de-icing salts applied to asphalt areas travel easily with the runoff water. De-icing salt can increase the mobility of some [[heavy metals]] in soil (e.g. lead, copper or cadmium). This may increase the downstream concentration of these metals <ref>Amrhein, C., Strong, J.E., and Mosher, P.A. 1992. Effect of de-icing salts on metal and organic matter mobilization in roadside soils. Environmental Science and Technology. Vol. 26, No. 4, pp. 703-709</ref><ref>Bauske, B., Goetz, D. 1993. Effects of de-icing salts on heavy metal mobility. Acta Hydrochimica Hydrobiologica. Vol. 21. pp. 38-42., 1993).</ref>
Sodium and chloride ions in de-icing salts applied to asphalt areas travel easily with the runoff water. De-icing salt can increase the mobility of some [[heavy metals]] in soil (e.g. lead, copper or cadmium). This may increase the downstream concentration of these metals <ref>Amrhein, C., Strong, J.E., and Mosher, P.A. 1992. Effect of de-icing salts on metal and organic matter mobilization in roadside soils. Environmental Science and Technology. Vol. 26, No. 4, pp. 703-709</ref><ref>Bauske, B., Goetz, D. 1993. Effects of de-icing salts on heavy metal mobility. Acta Hydrochimica Hydrobiologica. Vol. 21. pp. 38-42., 1993).</ref>
To minimize risk of groundwater or soil contamination, the following management approaches are recommended (Pitt et al., 1999; TRCA, 2009b):</strong>
To minimize risk of groundwater or soil contamination, the following management approaches are recommended (Pitt et al., 1999; TRCA, 2009b):</strong>
Stormwater infiltration practices should not receive runoff from the following areas:
Stormwater infiltration practices should not receive runoff from the following areas:
*Where large amounts of de-icing salts are applied (e.g., busy highways), or
*Where large amounts of de-icing salts are applied (e.g., busy highways), or