Its the greenies ect that make these problems take so much work to clear up.
In the past they would of just sent up a dozer / loader / excavator and pushed all the slip over the other side and pulled a bit more out of the way , run a dozer up behind the slip to change water run , and its fixed ..2 years down the track its all regrowth and nobody would know ..
But not now days ,, no its got to be loaded out and carted away to some other place. then they stuff around and try to stabilize whats left , consult with all the different agencys , put up / take down , move silt traps , fencing , signs , ect ect ..
cheers