Mendocino Coast TMDL Implementation Project - Phase 3, South Fork Big River Phase 2 Component Stream Crossings and Bank Stabilization LSAA EPIMS-MEN-69567-R1C
34 Documents in Project
Summary
SCH Number
2012052019
Lead Agency
Mendocino County Resource Conservation District
Document Title
Mendocino Coast TMDL Implementation Project - Phase 3, South Fork Big River Phase 2 Component Stream Crossings and Bank Stabilization LSAA EPIMS-MEN-69567-R1C
Document Type
NOD - Notice of Determination
Received
Posted
10/9/2026
Document Description
The California Department of Fish and Wildlife (CDFW) has executed Lake and Streambed Alteration Agreement (EPIMS-MEN-69567-R1C), pursuant to Fish and Game Code section 1602, to the project Applicant, Erin Formaker, representing Mendocino Resource Conservation District. The Project is limited to four encroachments. All encroachments described below will follow the treatments described in both the Conceptual Treatments document and Additional Pages document provided with the Notification materials. One proposed encroachment (SC-5.1) is to upgrade an existing unimproved low water crossing to a vented armored fill crossing. Work for this encroachment will include excavation to define a channel (4 feet wide by 2 feet deep by 60 feet long) through an existing skid bench to the top of a cutbank, excavation to transition the cutbank down to the road (10 feet wide by 1 foot deep by 20 feet long), excavation and installation of 15 cubic yards of 0.5-1.5 foot diameter rock armor for a keyway, placement of a new properly sized culvert, installation of five cubic yards of 8-12 inch diameter rock for the driving surface rock, installation of five cubic yards of 0.5-1.5 foot diameter rock armor to the cutbank transition with the road fill, backfilling and compaction of fill, and rock armoring as necessary to minimize erosion. One proposed encroachment (SC-9) is to upgrade an existing unimproved low water crossing to a vented armored fill crossing. Work for this encroachment will include excavation to define a 4 feet wide channel with 2:1 side slopes through the skid bench and inboard berm just upstream of the crossing, installation of 15 cubic yards of 0.5-1.5 foot diameter rock armor for a keyway, placement of a new properly sized culvert, installation of five cubic yards of 8-12 inch diameter rock for the driving surface rock, installation of five cubic yards of 0.5-1.5 foot diameter rock armor to the cutbank transition with the road fill, backfilling and compaction of fill, and rock armoring as necessary to minimize erosion. One proposed encroachment (Site 3) is to perform bank stabilization at a stream bank erosion site consisting of two nearby segments (Part A and Part B) divided by two redwoods on the left bank. Work for Part A will include excavation of the left bank from the right end to the two redwoods (15 feet wide by 2 feet deep by 8 feet long), installation of five cubic yards of 1.0-2.0 foot diameter rock armor at a 1.5:1 angle to Part A on the left bank, backfilling and compaction of fil, and additional rock armoring as necessary to minimize erosion. Work for Part B will include excavation of the left bank from the two redwoods to the left end (20 feet wide by 2 feet deep by 5 feet long), installation of five cubic yards of 1.0-2.0 foot diameter rock armor at a 1.5:1 angle to Part B on the left bank, backfilling and compaction of fil, and additional rock armoring as necessary to minimize erosion. The final proposed encroachment (Site 4) is to perform bank stabilization at a stream bank erosion site. Work will include excavation of the feature from the right to left end (25 feet wide by 1 foot deep by 12 feet long), installation of 15 cubic yards of 1.0-2.0 foot diameter rock armor to the left bank of the stream where it is excavated at a 1.5:1 angle, backfilling and compaction of fil, and additional rock armoring as necessary to minimize erosion.
Contact Information
Name
John Herrera
Agency Name
CA Fish and Wildlife
Job Title
Senior Environmental Scientist Specialist
Contact Types
Responsible Agency
Address
Phone
Name
Erin Formaker
Agency Name
Mendocino County Resource Conservation District
Job Title
Contact
Contact Types
Lead/Public Agency
Phone
Email
Location
Coordinates
Cities
Comptche
Counties
Mendocino
Regions
Northern California
Parcel #
149-060-05
Waterways
Big River watershed
Township
16N
Range
14W
Section
18
Base
MtDiablo
Other Location Info
approximately 6.9 miles east of the town of Comptche
Notice of Determination
Approving Agency
Department of Fish and Wildlife Northern Region
Approving Agency Role
Responsible Agency
Approved On
County Clerk
Mendocino
Final Environmental Document Available at
Mendocino County Resource
Conservation District
115 E. Smith Street
Ukiah, CA 95482
Contact: Erin Formaker
Email: erin.b@mcrcd.org
Phone: 707-462-3664, ext. 108
Determinations
(1) The project will have a significant impact on the environment
No
(2a) An Environmental Impact Report was prepared for this project pursuant to the provisions of CEQA
No
(2b) A Mitigated or a Negative Declaration was prepared for this project pursuant to the provisions of CEQA
Yes
(2c) An other document type was prepared for this project pursuant to the provisions of CEQA
No
(3) Mitigated measures were made a condition of the approval of the project
Yes
(4) A mitigation reporting or monitoring plan was adopted for this project
No
(5) A Statement of Overriding Considerations was adopted for this project
No
(6) Findings were made pursuant to the provisions of CEQA
No
Attachments
Notice of Determination
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