Smith Basin Improvement Project

Smith Basin Improvement Project

The proposed project under the previous scoping (June 2018 NOP Proposed Project) involved two (2) project alternatives. Alternative 1 involved improvement to increase geotechnical stability of the Smith Basin embankment slopes in six (6) areas. Under Alternative 2, all improvements under Alternative I would be included, except that under Alternative 2, Santiago Creek would be reestablished along the toe of the slopes in its current alignment and would maintain its current width and depth and would be protected in place with rip rap. In August 2018, the OCWD reevaluated the NOP Proposed Project and began the revision process to the scope of work. Limits were placed on the proposed improvements, reducing the number of areas proposed for stabilization from six (6) to three (3) and realigning the Santiago Creek to its prior alignment instead of stabilizing it in its current location. The Proposed Project activities includes re-establishing the historical access road on the north; re-grading the bottom of Smith Basin to restore Santiago Creek in its former alignment nearer the middle of the basin; repairing and reconstructing the slopes in the basin; constructing six (6) groins to slow water flow along the southern slope; and restoration of removed vegetation.

Orange, Villa Park

Orange

Countywide

California Air Resources Board (ARB), California Department of Conservation (DOC), California Department of Forestry and Fire Protection (CAL FIRE), California Department of Parks and Recreation, California Department of State Parks, Division of Boating and Waterways, California Department of Transportation, District 12 (DOT), California Department of Water Resources (DWR), California Governor's Office of Emergency Services (OES), California Highway Patrol (CHP), California Native American Heritage Commission (NAHC), California Natural Resources Agency, California Regional Water Quality Control Board, Santa Ana Region 8 (RWQCB), California State Lands Commission (SLC), Department of Toxic Substances Control, Office of Historic Preservation, State Water Resources Control Board, Division of Water Quality, State Water Resources Control Board, Division of Water Rights, California Department of Fish and Wildlife, South Coast Region 5 (CDFW)

California Department of Fish and Wildlife, South Coast Region 5 (CDFW)

Project Approval

Aesthetics, Agriculture and Forestry Resources, Air Quality, Biological Resources, Cultural Resources, Drainage/Absorption, Flood Plain/Flooding, Geology/Soils, Greenhouse Gas Emissions, Hazards & Hazardous Materials, Hydrology/Water Quality, Mineral Resources, Noise, Population/Housing, Public Services, Recreation, Solid Waste, Transportation, Tribal Cultural Resources, Vegetation, Wetland/Riparian, Wildfire, Wildlife, Energy