Carlson Marsh Regrade Project

3 Documents in Project


SCH Number
Lead Agency
Irvine Ranch Water District
Document Title
Carlson Marsh Regrade Project
Document Type
NEG - Negative Declaration
Present Land Use
Open Space and Preservation

Document Description
Proposed modifications and improvements within Carlson Marsh include structural improvements, vegetation removal, restoration of riparian habitat, import of soil and export of vegetative debris, and removal of existing structures. IRWD proposes to make several modifications to improve the Carlson Marsh area of San Joaquin Marsh in order to accomplish the following goals: 1) Improve water circulation to promote vector control; 2) Reestablish a year-round water supply to the Carlson Marsh; 3) Remove invasive vegetation and restore riparian habitat; 4) Provide additional freeboard to reduce the susceptibility of adjacent facilities to flood damage.

Contact Information
Gregory K. Herr
Irvine Ranch Water District
Lead/Public Agency
15600 Sand Canyon Ave.
Irvine, CA 92618

Phone : (949) 453-5577


Cross Streets
Campus Drive and Carlson Drive
Total Acres
State Highways
John Wane
San Diego Creek

Notice of Completion

Review Period Start
Review Period End
Local Action
Marsh Enhancement
Project Issues
Aesthetics Agriculture and Forestry Resources Air Quality Cultural Resources Cumulative Effects Flood Plain/Flooding Geology/Soils Growth Inducement Hazards & Hazardous Materials Hydrology/Water Quality Land Use/Planning Mineral Resources Noise Public Services Schools/Universities Septic System Sewer Capacity Solid Waste Transportation Vegetation Wetland/Riparian Wildfire Wildlife
Reviewing Agencies
California Department of Parks and Recreation California Native American Heritage Commission (NAHC) California Regional Water Quality Control Board, Santa Ana Region 8 (RWQCB) California State Lands Commission (SLC) Department of Water Resources Office of Emergency Services, California Resources Agency State Water Resources Control Board, Division of Water Quality State Water Resources Control Board, Divison of Financial Assistance California Department of Transportation, District 12 (DOT) California Department of Fish and Wildlife, South Coast Region 5 (CDFW)

Disclaimer: The document was originally posted before CEQAnet had the capability to host attachments for the public. To obtain the original attachments for this document, please contact the lead agency at the contact information listed above. You may also contact the OPR via email at or via phone at (916) 445-0613.

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