EXETER — The Ausable Bayfield Conservation Authority (ABCA) board of directors has a new chair and vice-chair. Board members elected Central Huron Coun. Burkhard Metzger as chair on Feb. 16, while Bluewater Coun. George Irvin was voted vice-chair. Metzger replaces former chair Mike Tam of West Perth, who held the position since 2014. Tam will…