Erwin was chief of staff for supervisor Neil Derry.
"This is the most appalling corruption case in decades in the history of San Bernardino County and maybe California itself," said Attorney General Jerry Brown who was in San Bernardino when the arrests were announced.
The Board of Supervisors approved the settlement of that claim, although the county staff opposed it.
If they're convicted, Postmus could get 12 years in prison, and Erwin could get eight.
Postmus was already facing criminal charges of grand theft, drug possession and misappropriation of public funds.