Take part in the Rock Creek Conservancy's Extreme Clean Up! There are over 50 locations throughout DC for watershed cleanup and invasive species removal, and this one is right in our backyard. EDIT: The Rock Creek Conservancy has asked us to focus primarily on trash pickup, since DC Parks laws regarded invasive species removals are super strict! Meet at playground at 39th ST NW and Porter St NW in McLean Gardens. Use "3650 39th ST NW, 20016" in a google maps search. The location is right down Mass Ave, so we will just meet on campus and walk over. Once you've signed up please fill out this form: http://publicevents.force.com/Public_Event_Signup_Page?cid=70170000000Mu1V