Concrete placement on the Oroville Dam spillway is likely to meet the Nov. 1 public safety construction deadline despite some setbacks, the California Department of Water Resources said on Wednesday. One of the slabs in the middle chute of the spillway needed to be replaced earlier this month due to hot weather and high winds affecting its surface. That slab is one of 221 that have been placed on the spillway through the work process and DWR doesn’t expect that to affect the schedule.