Ridgefield’s new Inland Wetlands Board will be led by Patricia Sesto, a longtime environmental officer for Wilton and Greenwich, among other towns.  Susan Baker, member of the grassroots Ridgefield Open Space Organization, will serve as vice chair.  The Board will hold its first public hearing tonight on expansion of the town’s Governor Street parking lot.  Plans call for the lot to be doubled.  Tonight's hearing is at 7:30 in the lower level meeting room of the Town Hall Annex.  The Planning and Zoning Commission must also rule on the town’s parking lot plans.