If it's true that TAR15 is beginning filming tommorow (Saturday: its 10:30pm here in Oregon for me) in Los Angeles again, then someone should hang around near LAX Airport to see if a bunch of near-identical cars are driving towards the long-term/economy lots. It's also good to keep your eyes peeled at Long Beach-Daugherty Field Airport, Burbank-Bop Hope Airport, Santa Ana Airport, and Ontario International Airport just in case they fly out there. Long Beach has flights to Portland/Seattle if they were heading to Canada first like to Vancouver, BC. Bop Hope Airport is also the same if they were flying out to Canada via PDX or SEA. Santa Ana has more flights to Chicago via United/American, Houston or Newark via Continental, Atlanta or Minneapolis via Delta, and same to Vancouver via PDX or SEA. Ontario is the second biggest airport in the LA metro with service to Houston, Atlanta, Portland, Seattle, and international service to Mexico (Mexico City and Guadalajara).
And just in case to let you know, the proposed film area could be for something else, WRP could mean something to do with the Water Utiliites in the area since its near a river and waterway.