ST. LOUIS (KMOV.com) – News 4 spoke to City Streets Director Todd Waelterman about how well the new, more expensive green salt is working to treat roads this winter.
Waelterman said the green salt has worked pretty well the past few days and will continue to be used to prevent re-freeze throughout the city.
City officials decided to make a change to the green salt hybrid after last winter. The new salt is pre-treated with magnesium before it is loaded onto the truck. Waelterman said the magnesium allows the salt to assist with melting in the below freezing temperatures. Without the magnesium, the salt would be pure salt and lose its effectiveness when temperatures are in the teens.
“Typically without treating it, you have another piece of equipment on the truck that treats it and a lot of times you have failure there and that’s what we found last year,” Waelterman said. “We had spots that were clean and spots that weren’t, so by pretreating the salt, you no longer need that extra piece of equipment. It’s real simple.”
The new mixture costs the city $112 a ton, with an extra $7 going towards the new blend. Last year the city paid $49 a ton for the salt.
Waelterman admits the department has been lucky this winter, meaning all city drivers have been lucky, because there has not been much snow so far.