You got lucky... There are places in our shop yard where i havn't seen grass since 1993 from a tire rupture!
Or rather.. you didn't get lucky. ideally the cacl would have taken the weeds out.
Ya don't live near a saltwater beach do ya?
Mind you.. some palnts are salt tolerant... it won't kill everything.. but does a number on grass for sure.. like bahia's and st. augustine!
soundguy