Investigators documented a litany of unsanitary conditions at the plant. After all, Parnell faced a possible 803 years in prison. He was found guilty of 70 felony counts. In the same case, guilty of faking results of lab tests that screen for salmonella, his brother faces 19 to 24 years in prison. The plant’s quality control manager, Mary Wilkerson, faces five years after she was convicted of obstruction of justice. “Americans should be able to trust that the food we buy for ourselves and our families is safe,” Stuart Delery, the Justice Department’s acting associate attorney general, said in a statement Monday.