Eureka Slough Bridges Geoarchaeological Investigation

Summary

SCH Number
2021010059
Public Agency
California Department of Transportation, District 1 (DOT)
Document Title
Eureka Slough Bridges Geoarchaeological Investigation
Document Type
NOE - Notice of Exemption
Received
Posted
1/7/2021

Document Description
The proposed project is a geoarchaeological investigation for the Eureka Slough Bridges Replacement project. The purpose of the investigation is to gather data to inform the level of future studies needed for the bridge replacement project. The existing bridges are located approximately at post mile 79.78 on U.S. Highway 101 in Humboldt County. Core samples would be taken from 18 of 26 proposed locations adjacent to northbound U.S. 101 from post mile 79.4 to post mile 80.0 and southbound U.S. 101 from post mile 79.5 to post mile 80.0. A professional drilling crew would collect core samples of subsurface deposits using either a hollow-stem auger or a hydraulic push-tube device from areas accessible by a coring rig. Coring would be conducted at least 20 feet away from the fog line, 15 feet away from road shoulder, and 10 feet away from any known underground utility or structure. Each core would be pushed to a depth of nine meters or more below surface and would be stored in 1.2 to 1.5-meter-long and 4.7 centimeter in diameter or larger hard plastic liners for transport to a lab where they would be opened, examined, described, and subsampled. A Humboldt County drilling permit would be obtained for the coring work. All work would take place within Caltrans right of way. Biological, cultural, and traffic handling analysis have been completed.

Contact Information
Felicia Zimmerman
California Department of Transportation
Lead/Public Agency
1656 Union Street
Eureka, CA 95501

Phone : (707) 441-5603
felicia.zimmerman@dot.ca.gov

California Department of Transportation
Project Applicant

Location

Cities
Eureka
Counties
Humboldt
Regions
Citywide Countywide
Zip
95502
State Highways
US Highway101
Waterways
Eureka Slough
Other Location Info
Post miles 79.4 to 80.0

Notice of Exemption

Exempt Status
Categorical Exemption
Type, Section or Code
Class 6, PRC 21084, CCR 15306
Reasons for Exemption
Project consists of data collection which would not result in disturbance to environmental resources.

Attachments

Environmental Document
0F200 Geoarch CE 01062021   PDF 336 K
Notice of Exemption
01-0F200_Geoarch_NOE   PDF 121 K

Disclaimer: The Governor’s Office of Planning and Research (OPR) accepts no responsibility for the content or accessibility of these documents. To obtain an attachment in a different format, please contact the lead agency at the contact information listed above. You may also contact the OPR via email at state.clearinghouse@opr.ca.gov or via phone at (916) 445-0613. For more information, please visit OPR’s Accessibility Site.

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