Foster-Arend Beach in Rochester will open for the season Saturday. It will remain open through Labor Day. Beach hours will be 10 a.m. to 8:00 p.m. daily. Park hours are 5:00 a.m. to 9:00 p.m. daily. There is no admission charge at the beach. Secutiry officers will be on site during beach hours, but no lifeguards will be on duty. Rules include: no alcohol in the park, no dogs in the beach area, no smoking in the beach area, no glass in the beach area, and no swimming outside the designated swimming area.