Sonoma, State Route 1, Postmile 18.6 Project (EA: 04-3Q930)

2 Documents in Project


SCH Number
Public Agency
California Department of Transportation, District 4 (DOT)
Document Title
Sonoma, State Route 1, Postmile 18.6 Project (EA: 04-3Q930)
Document Type
NOE - Notice of Exemption

Document Description
Caltrans will protect the structural integrity of the roadway by replacing a deteriorating corrugated metal pipe (CMP) culvert that has surpassed its service life. In January of 2020, Caltrans personnel discovered that flowing water had undermined the culvert, and the outlet had partially rotted away.

Contact Information
Susan Stewart
North Coast Regional Water Quality Control Board
Lead/Public Agency
5550 Skylane Boulevard. Suite A
Santa Rosa, CA 95404

Phone : (707) 576-2657


State Highways
State Route 1, PM 18.6

Notice of Exemption

Exempt Status
Categorical Exemption
Type, Section or Code
Class 1 and Class 2, section 15300, section 15301, and section 15302
Reasons for Exemption
The project will replace a culvert 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
2020040119_SR1 EA04-3Q930   PDF 584 K

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