Salt Management 

The City has developed a Salt Management Plan, which serves to guide staff in best practices to improve the effectiveness of road salt as well as aid in the proactive protection of the environment while using road salt.

Extremely low temperatures (below negative 9 degrees Celsius), will reduce the effectiveness of road salt. To compensate for this limitation, best practices developed through the implementation of the salt management plan have resulted in the development of pre-wetting technologies. This technology consists of the pre-application wetting of the road salt as it is being dispensed from the winter control vehicle, to the roads, using either a 23% concentrate (sodium chloride) salt brine liquid or a 22% concentrate magnesium chloride liquid additive. The liquid additive serves two important functions. Firstly the liquid coats the rock salt particle which will cause the particle to bounce less, resulting in the particle remaining on the roadway where it was placed, and secondly activating the salt, as it requires moisture to work. The magnesium chloride additive provides enhanced contribution, as it will cause the salt to perform at substantially lower temperatures, (below negative 20 degrees Celsius) thus resulting in less salt being required to achieve the desired result.

Proactive Storm Responsiveness

Anti-Icing Program

The recently enacted Ontario Regulation 47/13, (January 25, 2013), (amending O. Reg 239/02) requires that municipalities deliver a proactive response to winter conditions. As a result, Operational Services will enhance the application of the Anti-Icing Program.

Anti-icing is the application of an anti-icing sodium chloride or magnesium chloride solution to the road surface which performs a two-fold benefit. Prior to a storm’s arrival, designated roads are treated in order to prevent the snow and ice precipitation from bonding to the pavement. The absence of the bond, then facilitates the plowing activity and results in a return to a friction bearing surface sooner with less salt application overall and in compliance with the Salt Management Plan (SMP).

Between storms, when conditions for the formation of “black ice” exist, vulnerable areas such as bridge decks and low lying areas are treated as a precautionary measure.