Volunteer at Marine Park, S.E. Marine Park Way and Columbia Way in Vancouver, to clean the beach from 9 to 11 a.m. July 6 and prevent trash from entering the river. Litter-pickers and buckets will be provided. This volunteer program will occur rain or shine. Expect to walk 1.5 miles on sandy beaches, with some areas of paved pathways trails. Registration is required at volgistics.com/appform/1746005060.