The man was charged with murder in 2015 but was found dead in custody some weeks later.
The crash happened between Invercargill and Southland.
The agreement has been a long time coming.
"We can't hold him accountable because he just can't recall the issues we ask him about."
"The reality is people need those services to care for their families."
An Australian mining company says it has "rapidly advancing plans" for Southland.
"The disposal will happen today in a safe environment away from the museum."
But there is still uncertainty around other clean-up work set to cost more than $200 million.
The Project went along to see what it takes to be top dog in 2021.