Caltrans, Highway 1 Timber Gulch Culvert Project
Summary
SCH Number
2010108093
Public Agency
Regional Water Quality Control Board, Region 1 (North Coast), Santa Rosa
Document Title
Caltrans, Highway 1 Timber Gulch Culvert Project
Document Type
NOE - Notice of Exemption
Received
Posted
10/12/2010
Document Description
The purpose of the proposed project is to replace the existing culvert that was damaged in the 2005/2006 wet season and has significantly degraded due to scour. Caltrans proposed replacing the current 48-inch diameter corrugated metal pipe culvert with a 108-inch diameter steel pipe culvert. Additionally, Caltrans proposes to install new headwalls, wingwalls, and rock slope protection (RSP) with the new culvert. The newly proposed structure is designed to pass larger debris flows and prevent additional erosion and scour.
Contact Information
Name
Jeremiah Puget
Agency Name
Regional Water Quality Control Board, Region 1 (North Coast), Sa
Contact Types
Lead/Public Agency
Phone
Location
Counties
Sonoma
Other Location Info
Timber Gulch
Notice of Exemption
Exempt Status
Categorical Exemption
Type, Section or Code
15301 (a)
Reasons for Exemption
Existing highway drainage system with minor impacts.
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.