Mark McCauley will become the next administrator of Clark County on an interim basis.McCauley, the county’s director of general services, will take the reins as the top manager at the county on Sept. 11. That is the day after administrator Bill Barron retires from the job he’s held for 14 years.McCauley is a certified public accountant and retired lieutenant colonel of the U.S. Army who has been with Clark County since 2001. He began his career with the county as finance manager of public works and was promoted to director of general services in 2006.McCauley holds bachelor’s degrees in business administration and accounting from Washington State University and a master’s degree in business administration from Syracuse University.As director of general services, McCauley oversees 133 staff members who work across a variety of county departments including purchasing, technology, telecommunications, facilities management and risk management.Clark County commissioners voted unanimously to offer the job to McCauley during a Wednesday board time meeting.The interim status will last until at least November 2014 when voters will first have the chance to vote on a new county charter drafted by a board of 15 elected freeholders. Because the freeholders could choose to move to a model of government that elects a county executive, the county administrator role may become defunct. Due to that uncertainty, commissioners choose to go with an extended interim administrator rather than recruit for a long-term replacement.