Grand Canyon Gulch Stabilization Project

Summary

SCH Number
2013048062
Lead Agency
Fish & Wildlife 3 (Napa) (California Department of Fish and Wildlife, Region 3)
Document Title
Grand Canyon Gulch Stabilization Project
Document Type
NOE - Notice of Exemption
Received

Document Description
Caltrans proposes to stabilize the roadway embankment on State Route 1 at Grand Canyon Creek, and prevent further erosion during high flow events. A continuous 24-inch diameter cast-in-drilled-hole (CIDH) pile wall will be buried under the southbound lane pavement and shoulder. The CIDH wall will be backfilled with concrete and H-beams. It will be approximately 300 feet long and the piles will be installed approximately 35 deep. A barrier slab will be laid above the new embedded wall, providing anchoring for a steel railing adjacent to the southbound lane. The southbound lane of State Route 1 will be temporarily closed and excavated to install the CIDH wall, barrier slab, and railing.

Contact Information
Melissa Escaron
California Department of Fish and Wildlife, Region 3
7329 Silverado Trail
Napa, CA 94558

925 786-3045

Location

Counties
Marin

Notice of Exemption

Exempt Status
Categorical Exemption
Type, Section or Code
15301 - Class 1
Reasons for Exemption
Repair of existing facility.
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