Whinham did not respond to messages seeking comment.
Roy provided a redacted copy of the investigation report earlier this month after a request by The Salt Lake Tribune and mediation through the state records ombudsman. It provides the first details of the allegations that led to Whinham's resignation.
The investigation was conducted by the Layton city attorney. The report, dated July 3, says dating a subordinate was the primary allegation, but other accusations later came to light.
Whinham acknowledged texting and starting a personal relationship with the subordinate, according to the report. That led to a date June 1, the report says.
"After that date, and seeing the relationship evolving, Greg Whinham checked the City's policies and then contacted the City Manager to inform him of the relationship," the report says. "On June 3, 2013 supervisory changes were made."
But Whinham had already violated the policy against dating subordinates, the report says.
The Layton attorney also found two Roy police employees received what was described as "special treatment." The report says one of those employees received more special treatment than the other, including spending long spans of time in Whinham's office. The names of the employees are redacted. It is unclear whether one of them was Lindstrom.
Whinham also allowed a business owner to use his computer. The then-chief proctored an exam the business owner was taking online through Utah State University, according to the report. Roy policy says only city employees and their immediate family, under supervision of the employees, can use the computers.
In another episode, Whinham had two Roy High students working in a police internship program in his car as he sped, the report says. Whinham claimed he was going "80-ish," the report says, though witnesses place his speed in excess of 90 mph after dark and outside of school hours. The report says the necessary permission forms for the two girls had not been requested or obtained. The report does not specify where Whinham was driving.