Drosihn Emergency Bridge Removal Project (EPIMS-HUM-15190-R1)
Summary
SCH Number
2021010355
Public Agency
California Department of Fish and Wildlife, Northern and Eureka Region 1
(CDFW)
Document Title
Drosihn Emergency Bridge Removal Project (EPIMS-HUM-15190-R1)
Document Type
NOE - Notice of Exemption
Received
Posted
1/28/2021
Document Description
The project is limited to one encroachment to remove an unpermitted bridge that spans the Mad River. The bridge
crossing will be decommissioned by removing the bridge infrastructure and armoring within the active stream
channel. This includes removal of the decking and spanning logs and removal of rock armoring on the right
streambank, which will be laid back to a 2:1 slope. Work for this encroachment will include excavation, backfilling
and compaction of fill, and rock armoring as necessary to minimize erosion
Contact Information
Name
David Manthorne
Agency Name
Department of Fish and Wildlife
Contact Types
Lead/Public Agency
Address
Phone
Name
Agency Name
Mike Drosihn
Contact Types
Project Applicant
Location
Cities
Dinsmore
Counties
Humboldt
Regions
Northern California
Other Location Info
The project to be completed is located within the Mad River watershed,
approximately 2.2 miles north of the town of Dinsmore, County of Humboldt, State of California. The project is
located in Section 28, T2N, R5E, Humboldt Base and Meridian; in the Blake Mountain U S. Geological Survey 7.5-
minute quadrangle; Assessor’s Parcel Number 208-221-012; latitude 40.52392 N and longitude 123.62335 W.
Notice of Exemption
Exempt Status
Categorical Exemption
Type, Section or Code
15065
Reasons for Exemption
The project proposes to remove a bridge that may be overtopped by winter
peak flows on the Mad River. There would be no significant adverse impact on endangered, rare or threatened
species or their habitat pursuant to section 15065. There are no hazardous materials at or around the project site
that may be disturbed or removed. The project will not result in impacts that are significant when viewed in
connection with the effects of past projects, the effects of other current projects, and the effects of probable future
projects.
Attachments
Notice of Exemption
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