There has been significant turnover at the top of Denver Mayor Michael Hancock’s administration as the term-limited mayor enters his final full calendar year in office. Last week, Hancock nominated new leaders for the city’s human services and excise and licenses departments. Jay Morein has been nominated to take the top spot at Denver Human Services where he now works as chief operating officer, Hancock announced in a news release last week. Molly Duplechian, who took over as interim executive director of the excise and licenses department when long-time head Ashley Kilroy stepped down on Jan.