(Portland, OR) -- A tip to the City of Portland's Fraud Hotline reported an on-duty firefighter washing his personal vehicle at a fire station and using city water. The Fire Bureau says it's an accepted practice. The City Auditor says it's a violation of city rules and has a bad public perception. Firefighters work 24-hour shifts and are allowed to take time for personal activities. The Fire Bureau says it will draft a policy clarifying what is and is not personal use, including washing personal vehicles.