The California Department of Water Resources says crews are pouring the last bit of concrete on the bottom sections of the new Lake Oroville main spillway project. Erin Mellon with DWR says that Wednesday is the deadline for the major work to be completed. “The work that will continue past Nov. 1 on the main spillway is going to be focused on site cleanup, sealing of drains, concrete seams and drainage pipes,” Mellon said. Crews are also working on a cutoff wall to limit erosion below the emergency spillway.