Fire Chief Dan Sullivan was fired by letter Monday, six months after being sent home on paid leave amid allegations he had presided over a department that tolerated discrimination and spawned a good old boys environment that belittled minorities and women. Sullivan, who was hired as a firefighter more than 32 years ago and spent 18 years as chief, declined to comment Monday. Michael Petit, Sullivan's attorney, described the investigation that led to the chief's termination as unfair and incomplete. "It's all innuendo and nothing is substantiated," Petit said. "There are documents that would confirm whether something occurred or did not occur. No document in there substantiates any of the claims made by the 38 witnesses." Division Chief Mark Ellis, named acting fire chief in April, will continue to oversee the city's 78 firefighters and 18 lifeguards until a new chief is named, City Manager Renee Miller said. Miller spelled out her reasons for terminating Sullivan in a three-page letter sent to the chief Monday.