Siobhan Braun 4 p.m., Sept. 29
A clean river is fashionable! Join San Diego River Park Foundation's Clean and Green Team to "attack trash and illegal dumping along our namesake river." Meet in southeastern parking lot near Bloomingdale's. Tools, supplies provided. Light rain does not cancel. Dress in closed shoes, clothes that can get dirty. RSVP: email@example.com or 619-297-7380.
- Cost: Free