Route 1 Timber Gulch Culvert Replacement

Summary

SCH Number
2010088358
Lead Agency
Planning and Research, Office of (Office of Planning and Research)
Document Title
Route 1 Timber Gulch Culvert Replacement
Document Type
NOE - Notice of Exemption
Received

Document Description
Caltrans proposes replace an undersized 88-foot long, 3-foot diameter culvert with a 9-foot diameter culvert. The culvert conveys Timber Gulch flows under State Route 1. The undersized culvert is causing debris collection at the inlet thereby restricting downstream flow. As a result of the restricting flow, extensive scouring and erosion has occurred at the inlet. The new culvert will be installed using the pipe ramming technique which requires the use of an insertion pit and receiving pit. The pit will be excavated as necessary to achieve a depth of 4 feet.

Contact Information
Melissa Escaron
California Department of Fish and Game
P.O. Box 47
Yountville, CA 94559

(707) 339-0334

Location

Counties
Sonoma

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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