Irvine Ranch Water District San Diego Creek Watershed Natural Treatment System (NTS)
EIR - Draft EIR
Present Land Use
Varies depending on location of 31 proposed NTS Plan Facilities
The NTS plan is a watershed-wide system for the natural treatment of storm runoff and dry weather flows generated within the 122 square mile San Diego Creek Watershed and approximately 1.3 square miles of the Santiago Creek Watershed. The Santiago Creek Watershed is a tributary of the Santa Ana River. The NTS plan consists of a system of 31 constructed water quality treatment wetlands. These facilities use wetlands vegetation and take advantage of naturally occuring physical, chemical, and biological processes to treat the runoff and dry weather flows. The natural and man-made drainage features within the San Diego Creek Watershed all drain via San Diego Creek and its tributaries into Upper Newport Bay. These flows then enter Lower Newport Bay on their way to the Pacific Ocean.
Irvine, Irvine, Tustin, Lake Forest, Laguna Hills, Laguna Woods, ..., Laguna Hills, Laguna Woods, Lake Forest, Newport Beach, Orange, Santa Ana, Tustin
Notice of Completion
Review Period Start
Review Period End
Other (Natural Treatment System Constructed Wetlands)
Aesthetics, Agriculture and Forestry Resources, Air Quality, Cultural Resources, Cumulative Effects, Drainage/Absorption, Flood Plain/Flooding, Geology/Soils, Growth Inducement, Hydrology/Water Quality, Land Use/Planning, Noise, Public Services, Recreation, Vegetation, Wetland/Riparian, Wildlife
California Coastal Commission (CCC), California Department of Conservation (DOC), California Department of Fish and Wildlife, South Coast Region 5 (CDFW), California Department of Health Care Services (DHCS), California Department of Parks and Recreation, California Department of Transportation, District 12 (DOT), California Native American Heritage Commission (NAHC), California State Lands Commission (SLC), Department of Fish and Wildlife, Marine Region, Department of Water Resources, Resources Agency, State Water Resources Control Board, Division of Water Quality, State Water Resources Control Board, Division of Water Rights, California Regional Water Quality Control Board, Santa Ana Region 8 (RWQCB)
Reviewing Agency Comments
California Regional Water Quality Control Board, Santa Ana Region 8 (RWQCB)
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