February 2025 Storm- Emergency Repairs
Summary
SCH Number
2025030667
Public Agency
San Mateo County
Document Title
February 2025 Storm- Emergency Repairs
Document Type
NOE - Notice of Exemption
Received
Posted
3/17/2025
Document Description
At Project Site 1, the County owns and maintains a ditch relief culvert on Alpine Road. The energy dissipation/ road embankment at the culvert outlet failed, severely compromising the road. The slipped portion of road shoulder was reconstructed with boulders, backfilled with soil, and seeded with native seeds.
At Project Site 2, the County owns and maintains a bridge at Butano Cutoff that spans Pescadero Creek. Due to two large atmospheric river storm events in early- and mid-February and subsequent high level peak flows for Pescadero Creek, excess woody debris accumulated in Pescadero Creek immediately upstream of the bridge. The debris was obstructing and deflecting streamflow and posed an imminent threat for erosion at the bridge piers and abutments. The purpose of this emergency work was to protect the bridge structures from erosion and scour, which could compromise the bridge's structural integrity and create safety hazards near Pescadero High School.
At Project Site 3, the County owns and maintains a ditch relief culvert on Stage Road. This culvert required replacement due to corrosion inside the pipe, which caused a sink hole within the road due to recent major rains, severely compromising the road. The CMP culvert was excavated and replaced with a new CMP pipe with the same dimensions. The slipped portion of road shoulder at the outlet was reconstructed with boulders, backfilled with soil, and seeded with native seeds.
Contact Information
Name
Selena Verblaauw
Agency Name
San Mateo County
Job Title
Natural Resource Specialist
Contact Types
Lead/Public Agency
Phone
Email
Location
Coordinates
Cities
unincorporated area
Counties
San Mateo
Regions
San Francisco Bay Area
Cross Streets
Alpine Road, Butano Cutoff, Stage Road
Zip
94020
Total Acres
0.00987
Other Location Info
There are three project locations for this emergency storm repair.
At Location 1, there was an energy dissipation/ road embankment repair on Alpine Road, 2.0 miles east of Pescadero Creek Road.
At Location 2, debris management was performed at Pescadero Creek at the Butano Cutoff bridge in Pescadero. The bridge is located 0.3 miles east of Cloverdale Road.
At Location 3, a culvert/ sink hole was repaired on Stage Road, 4.7 miles north of Pescadero Creek Road, near the junction of Pomponio Creek Road.
Notice of Exemption
Exempt Status
Emergency Project
Type, Section or Code
Sec. 21080(b)(4); 15269(b)(c)
Reasons for Exemption
Project undertaken by a public agency to repair existing facilities and protect facilities from severe storms
County Clerk
San Mateo
Attachments
Notice of Exemption
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