Ukonom 3 Drainage Project


SCH Number
Lead Agency
Regional Water Quality Control Board, Region 1 - North Coast, Santa Rosa (California Regional Water Quality Control Board, North Coast Region 1)
Document Title
Ukonom 3 Drainage Project
Document Type
NOE - Notice of Exemption
Project Applicant
California Department of Transportation

Document Description
Caltrans will replace 20 culvert drainage systems, of which eight are within jurisdictional waters along SR 96, in Siskiyou County. The Project is needed to replace existing culverts that are deteriorating, resulting in insufficient drainage capacity causing roadway flooding and embankment erosion which will lead to the roadway failure. Culverts will be replaced using either a cut-and-cover technique or a jack-and-bore technique

Contact Information
Susan Stewart
North Coast Regional Water Quality Control Board
5550 Skylane Boulevard. Suite A
Santa Rosa, CA 95403

Phone : (707) 576-2657


Cross Streets
Clear Creek to Oak Bar
State Highways
State Route 96, PM 26.0 - 97.7

Notice of Exemption

Exempt Status
Categorical Exemption
Type, Section or Code
15301 Existing Facilities, Class 1(c)
Reasons for Exemption
The project will replace culverts on an existing public highway for the purpose of public safety. The project will not result in an expansion of existing facilities.


Notice of Exemption
2020010114_Ukonom 3 Drainage Project   PDF 619 K

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