Repair Slipout and Drainage Systems


SCH Number
Public Agency
California Department of Transportation, District 1
Document Title
Repair Slipout and Drainage Systems
Document Type
NOE - Notice of Exemption
Document Description
On January 19, 2010 a drainage system experienced significant damage including embankment failure, down-drain separation and culvert erosion. Recent storm events resulted in slope failure below the roadway and erosion to the culvert inlet. The damaged culvert and down-drain accept roadway runoff from two drainage inlets on the US 101 four-lane facility and year-round flow from two under-drains and an oversize drain. The high flows from the storm damaged the embankment south of the damaged down-drain outlet at a 36" culvert crossing Route 271. Immediate action was necessary to stop any further embankment failure and possible loss of the entire roadway. Proposed work will repair the slip-out, replace the separated and damaged down-drain, cured-in-place lining of the existing cross culvert, placement of RSP and traffic control.

Contact Information

Steven Grantham
Agency Name
California Department of Transportation, District 1
Contact Types
Lead/Public Agency



Notice of Exemption

Exempt Status
Emergency Project
Type, Section or Code
21080(b)(4); 15269(b)(c)
Reasons for Exemption
It was determined that the project is an emergency project exempt under Section 15269(b). The project proposes to repair a publicly owned facility necessary to maintain service essential to the public safety.

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 or via phone at (916) 445-0613.

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