Spongeplant Control Program

4 Documents in Project


SCH Number
Lead Agency
California Department of Parks and Recreation
Document Title
Spongeplant Control Program
Document Type
NOP - Notice of Preparation

Document Description
The primary treatment method for the SCP will be aquatic herbicides. DBW is seeking approval for the use of five different herbicides for the SCP. Approval of five herbicides will provide flexibility in targeting this new invasive species and allow DBW to identify herbicides that will effectively treat the plant while minimizing the potential for negative environmental effects. All of the five herbicide active ingredients have been approved for the WHCP and/or EDCP: 2,4-D, glyphosate, imazamox, penoxsulam, and diquat. All five herbicides have been proven effective in treatment spongeplant, or the closely related species, American frogbit (Limnobium spongia). All herbicides will be used with an adjuvant surfactant, Agridex or Competitor, to increase adhesion to spongeplant leaves. When appropriate, DBW will also utilize a water conditioning agent to improve herbicide effectiveness, and a spray pattern indicator to identify treated plants.

Contact Information
Geoff Newman
California Department of Parks and Recreation
Lead/Public Agency
Boating and Waterways One Capitol Mall, Suite 410
Sacramento, CA 95814

Phone : (916) 327-1862


38°02'0"N 121°30'0"W
Oakley Sacramento Stockton
Contra Costa Sacramento San Joaquin Yolo
Total Acres
State Highways
Hwy 4, 12, 160, 220, 84
SP/UP, Sac Northern
Delta, Sac., San Joaquin, Tuolumne, Merced Rivers

Notice of Completion

Review Period Start
Review Period End
Local Action
Legislated Prog.
Project Issues
Agriculture and Forestry Resources Biological Resources Cumulative Effects Hazards & Hazardous Materials Hydrology/Water Quality Vegetation Wetland/Riparian
Reviewing Agencies
California Air Resources Board (ARB) California Department of Conservation (DOC) California Department of Parks and Recreation California Department of State Parks, Division of Boating and Waterways California Department of Transportation, District 4 (DOT) California Highway Patrol California Native American Heritage Commission (NAHC) California Public Utilities Commission (CPUC) California Regional Water Quality Control Board, Central Valley Sacramento Region 5 (RWQCB) Central Valley Flood Protection Board Delta Stewardship Council Department of Pesticide Regulation Department of Toxic Substances Control Department of Water Resources Resources Agency State Water Resources Control Board, Division of Water Quality Delta Protection Commission California Department of Fish and Wildlife, Bay Delta Region 3 (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 state.clearinghouse@opr.ca.gov or via phone at (916) 445-0613.

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