Ridgewood Grade safety Geotech Clerance


SCH Number
Public Agency
California Department of Transportation, District 3 (DOT)
Document Title
Ridgewood Grade safety Geotech Clerance
Document Type
NOE - Notice of Exemption
Document Description
Caltrans proposes a Geotechnical drilling project in support of the Ridgewood Grade Safety Project, located between PM 39.8 and PM 40.4 on US Highway 101 in Mendocino County, approximately 6 miles south of the City of Willits. The Ridgewood Grade Safety project would increase inside and outside shoulder widths on both sides of US 101, and require roadway excavation, construction of a Mechanically Stabilized Embankment Wall (MSEW), and construction of new roadway structural section. This MSEW requires collection of subsurface data that is necessary in the preparation of geotechnical recommendations and construction procedures.

Contact Information

Danielle Ruiz
Agency Name
Job Title
Environmental Scientist
Contact Types
Lead/Public Agency


Northern California
Cross Streets
US Highway 101 and Mariposa Creek Road
State Highways
US 101

Notice of Exemption

Exempt Status
Categorical Exemption
Type, Section or Code
Class 6; California Code of Regulations, title 14, Section 15306
Reasons for Exemption
Class 6 consists of basic data collection, research, experimental management, and resource evaluation activities which do not result in a serious or major disturbance to an environmental resource. These may be strictly for information gathering purposes, or as part of a study leading to an action which a public agency has not yet approved, adopted, or funded.


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