Vortex Tube Rehabilitation Project NOD
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Summary
- SCH Number
- 2020080522
- Lead Agency
- Sonoma County Water Agency
- Document Title
- Vortex Tube Rehabilitation Project NOD
- Document Type
- NOD - Notice of Determination
- Received
- Posted
- 11/18/2020
- Document Description
- The Vortex Tube is part of the Santa Rosa Creek Diversion Structure, a concrete flood control facility constructed in 1963 as part of the Central Sonoma Watershed Project to reduce flooding in downtown Santa Rosa. A concrete culvert beneath Montgomery Drive, known as the Vortex Tube, regulates peak winter floods in Santa Rosa Creek. The Vortex Tube has been damaged by abrasion during high flows. The purpose of the Proposed Project is to extend the useful life of the Vortex Tube by restoring its structural integrity. The Proposed Project’s repair of the Vortex Tube would be implemented in two phases: 1) construct a permanent Bypass Pipe beneath Montgomery Drive to temporarily direct creek flows around the Vortex Tube, and 2) dewater and repair the damaged Vortex Tube. The Proposed Project would not change the function or expand the capacity of the Diversion Structure.
- Contact Information
-
David Cook
Sonoma County Water Agency
404 Aviation Blvd
Santa Rosa, CA 95403
Phone : (707) 322-8176
David.Cook@scwa.ca.gov
Location
- Cities
- Santa Rosa
- Counties
- Sonoma
- Other Location Info
- The project is located on Santa Rosa Creek where it flows beneath Montgomery Drive, approximately 4 miles east of downtown Santa Rosa and approximately 3/4 mile east of Spring Lake Regional Park in Sonoma County.
Notice of Determination
- Approving Agency
- Sonoma County Water Agency
- Approving Agency Role
- Lead Agency
- Approved On
- Final Environmental Document Available at
- Sonoma County Water Agency, 404 Aviation Blvd, Santa Rosa, CA 95403
Determinations
- (1) The project will have a significant impact on the environment
- No
- (2a) An Environmental Impact Report was prepared for this project pursuant to the provisions of CEQA
- No
- (2b) A Mitigated or a Negative Declaration was prepared for this project pursuant to the provisions of CEQA
- Yes
- (2c) An other document type was prepared for this project pursuant to the provisions of CEQA
- No
- (3) Mitigated measures were made a condition of the approval of the project
- Yes
- (4) A mitigation reporting or monitoring plan was adopted for this project
- Yes
- (5) A Statement of Overriding Considerations was adopted for this project
- No
- (6) Findings were made pursuant to the provisions of CEQA
- Yes
Attachments
- Notice of Determination
- Vortex NOD_Final ocr PDF 516 K
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