A small plot of woods with a mountain biking trail in Whitnall Park has led to a potentially big change for how Milwaukee County manages trails in county parks. A new ordinance before the Milwaukee County Board of Supervisors would require Milwaukee County Parks to get approval from the board to establish new bike trails or alter 20% or more of an existing trail. “This is not an anti-mountain-biking resolution. … All we’re saying is the parks committee and the board should have oversight, especially when there’s such a new change,” said County Supervisor Anthony Staskunas, one of the co-sponsors of the ordinance that passed the board's Parks, Energy and Environment Committee Tuesday and will now go before the full board.