What is a reasonable scenario?Dangerous Operation Causing Death is worthy of deportation, if he's not a citizen.
How many years before trial and hopefully conviction?
Factors
1) The perp wants to defer jail as long as possible so his lawyers stall. It also lets public anger subside or shift to another punk.
2) The police want enough time to get all the evidence so won't rush things.
Trial in a couple of years. Sentencing months later. The minimum sentence is $1000 plus a few months in jail. The max is life.
I'm guessing five to ten years and out on parole well before his 25th birthday.