Of Snow and Ice (and Salt)
I’m frustrated with the amount of salt that people throw around the minute the temperature even begins to approach 0°C, regardless of whether or not the weather means ice.
It often seems that Victoria is single-handedly trying to resalinate the world’s oceans.
About Ice on the Road
From University of Washington: To get ice on a roadway one needs freezing temperatures [below 0°C] at the surface and moisture (water), a combination that can occur in a number of ways:
- Fog passing over a cold roadway surface
- Freezing of groundwater seepage or melted snow
- Freezing of snow that had initially melted on a warm road surface
- Freezing rain
About Road Salt
From this, they developed a code of practice… this was in 1999, people.
The handy table below outlines characteristics, chemical contents and environmental impact of different types of salt, as well as sand and urea. It can be found on Hamilton, Ontario’s Green Venture site (somewhat legitimate as the board of directors weighs heavy on the science side, and they’re funded on a governmental, community and corporate basis).
Salt Use in Victoria
I’m pretty sure most people will agree with me when I say that the amount of salt used here has reached obnoxiously paranoid levels.
The following pictures were taken at 1309 Cook Street. I was unable to track down the managers or maintenance for that building so I couldn’t find out what kind of salt(s) they’re using. You’ll note a trail of dissolved salt leading to the drain as well as a big pile of loose salt. I’m pretty sure loose salt on dry tarmac is going to decrease as opposed to increase friction.
Jawl Properties isn’t much better. They manage (and own?) a large number of properties all over town, especially at Selkirk Waterfront. When I called, they tried to be helpful, but this was the response: “we use three different types of salt, one of them is organic. We don’t know which is used at any individual location because it gets distributed in buckets.” Way to be aware and accountable.
And organic? What? They must mean salt mined from free-range children’s tears, wept onto patios and sun-dried, then scraped off by hand. (sadly, not words from my brain: a good writer friend supplied me with that.)
I’m sure glad that on a dry and sunny day Selkirk Waterfront benches may have been de-iced with organic salt.
Robbins Parking, the much loved parking lot mogul, was much more knowledgeable about what salt they use. For paved areas, they use rock salt that is purely NaCl (time to stop buying table salt and start harvesting from Robbins parking lots). For gravel areas, Sno-Plow an “enviro salt” is used (there’s even a handy material safety data sheet available). The maintenance guy, Kevin I believe, loves the stuff: “it contains no urea!”
But they still coat their lots with the stuff when there’s no ice. Shame, shame.
Get a Grip
C’mon people, salt is for when there’s ice, a lot of ice, not when there might, at some point, maybe be a little bit of ice. Use it safely and responsibly.