Optional Bonus for Owners of Agricultural Land. If an owner of agricultural land as defined by BIMC § 16.26.020 grants an easement to conserve and forever maintain the agricultural productivity of the agricultural land to the American Farmland Trust, Inc., or other appropriate trustee, as approved by the city of Bainbridge Island, then for every unused development right, the owner of agricultural land may sell three development rights. For example, if agricultural land has three unused development rights, the property owner could transfer or sell nine development rights.