threat tactics of MC

On Friday we received notice from the MC that the parking lots will be resurfaced on Tuesday requiring all vehicles removed by Monday night, or else the owner will pay towing charges and a $150 fine. Several tenants are gone still on summer vacation. I feel that the notice for this should have been given at least 1 to 2 weeks ahead of time, being that this is not emergency. And that the $150 fine is a heavy-handed use of power- and where did that amount come from anyway, it's not in the rules and regs or anywhere that I can find! Why not say $500, and really get everyone jumping, and stuff the bank account! What I am asking is what is the usual notice and procedure for this type of work.