It's a horrible design, how about moisture damage to the structure? And if that soil gets water logged from rain, the weight would be absolutely enormous.
The last "event" that dropped a coating to an inch and was gone by the next evening is at fault, they dropped 100 gigatons of salt on the streets for practically nothing.
At least that came when evapotranspiration is low. If that happens in summer there are going to be wildfires and stressed out trees/vegetation.
The only positive would be that the mosquito population would be lower.