Caltrans, highway 1-1, Rattlesnake Creek Fish Passage Project
- SCH Number
- Lead Agency
- Regional Water Quality Control Board, Region 1 (North Coast), Santa Rosa
- Document Title
- Caltrans, highway 1-1, Rattlesnake Creek Fish Passage Project
- Document Type
- NOE - Notice of Exemption
- Document Description
- The purpose of the proposed project is to replace and upgrade a degraded fish ladder on the outlet side of the concrete arch culvert at the Rattlesnake Creek Bridge. The fish ladder and concrete apron have been damaged and are on the verge of complete failure and appear to be hindering fish passage. Caltrans proposes to remove the existing fish ladder and construct a new weir system designed to improve fish passage. In addition, the proposed project would include lengthening the wing walls on the arch culvert and installing rock slope protection (RSP) to stabilize the culvert walls and hill slope opposite the outfall. Additionally, willow plantings will be incorporated into the proposed project, along the RSP and stream banks. The project will result in 2,726 feet^2 (89 linear feet) of permanent impacts to waters of the U.S. and waters of the State. The permanent impacts are associated with the installation of the RSP and the weirs, which are ultimately designed to improve the habitat and upstream mobility of multiple species of fish, primarily salmon and steelhead.
- Contact Information
Regional Water Quality Control Board, Region 1 (North Coast), Sa
5550 Skylane Boulevard, Suite A
Santa Rosa, CA 95403
Phone : (707) 576-2835
Fax : (707) 523-0135
Notice of Exemption
- Exempt Status
- Categorical Exemption
- Type, Section or Code
- Sec 15302(c)
- Reasons for Exemption
- Existing Highway with minor expansion of facility for the purpose of fish habitat restoration.
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