January 2023 Storm Repairs, Stage Road and Alpine Road

Summary

SCH Number
2023090509
Public Agency
San Mateo County Department of Public Works
Document Title
January 2023 Storm Repairs, Stage Road and Alpine Road
Document Type
NOE - Notice of Exemption
Received
Posted
9/21/2023
Document Description
On January 4, 2023, Governor Gavin Newson proclaimed a state of emergency throughout the State of California to support the response to historic rain and flooding. Heavy rains saturated slopes and triggered several road slip-outs along Stage Road and Alpine Road that require immediate repair. Emergency repairs may involve the following: #1, 08SR1, Stage Road Mile 3.6: Repair consists of stabilization of slope with soil nails and a shotcrete wall and reconstruction of the roadway with soil lifts and a concrete block facing wall. A metal beam guardrail will be installed. #2, 08SR2, Stage Road Mile 3.2: Repairs will include stabilization of the slope with soil nails and a shotcrete wall with low density fill to fill slope behind wall and minor reconstruction of roadway and shoulder. A metal beam guardrail will be installed. Stage Road 1 and 2 will be repaired concurrently. #3, 09AL1, Alpine Road, near Hwy 35: Repairs at this location may include stabilization of the slope with soil nails and a shotcrete wall, and reconstruction of the roadway and shoulder. A metal beam guardrail may be installed. Drainage improvements may be incorporated to reduce infiltration and saturation of pavement sections. Post-construction erosion control BMPs will be installed to conserve soil resources and protect water quality at each location. All temporary surface disturbances will be seeded with native plants. Work will be conducted in accordance with BMPs detailed in the County of San Mateo Routine Maintenance Program Manual.

Contact Information

Name
Mark Chow
Agency Name
County of San Mateo Department of Public Works
Job Title
Principal Civil Engineer
Contact Types
Lead/Public Agency / Project Applicant

Location

Counties
San Mateo
Regions
San Francisco Bay Area, Unincorporated
Cross Streets
Stage Road Mile 3.2 and 3.6 from Hwy 1 and Alpine Road Mile 0.6 from Hwy 35
Other Location Info
08SR1: 37°17'46.32"N 122°23'2.40"W 08SR2: 37°17'49.70"N 122°23'2.59"W 09AL1: 37°19'0.52"N 122°11'44.11"W

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 road facilities damaged by storm.
County Clerk
San Mateo

Attachments

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