The Wasco County Commission will conduct a hearing Wednesday on three different appeals of the County Planning Commission’s recent decision to approve a proposal from Union Pacific Railroad to expand the existing railroad siding on either side of Mosier for four miles of new second mainline track and realigned existing track. One appeal is from Friends of the Columbia Gorge, Columbia Riverkeeper, and Physicians for Social Responsibility, another from the Confederated Tribes of the Yakama Nation, and a third by the railroad itself over some conditions of approval. The appeal hearing will take place at 3 p.m. Wednesday in the Columbia Gorge Discovery Center.