Marshall Ranch Streamflow Enhancement Project (Lake or Streambed Alteration Agreement No. EPIMS-HUM-29137-R1C)
9 Documents in Project
Summary
SCH Number
2019109088
Lead Agency
Humboldt County
Document Title
Marshall Ranch Streamflow Enhancement Project (Lake or Streambed Alteration Agreement No. EPIMS-HUM-29137-R1C)
Document Type
NOD - Notice of Determination
Received
Posted
2/28/2023
Document Description
The project is limited to eleven encroachments. Two encroachments are for water diversion from unnamed tributaries to Redwood Creek. Water that is diverted for storage will be released into an unnamed tributary of Redwood Creek during the low flow season to augment streamflow in the main stem Redwood Creek. Work for the water diversion will include construction, use, and maintenance of the water diversion infrastructure. Two encroachments are the construction of two rock armored spillways to convey overflow from each pond. Work for this encroachment will include excavation, backfilling, compaction of fill, and rock armoring as necessary to minimize erosion. One encroachment is the construction of the western pond primary and secondary outflows and cooling/filtration gallery to be constructed in the western gully for the purpose of flow augmentation. Work will include placing discharge lines in the western gully, filling the western gully with approximately 1,350 cubic yards of sand and gravel, and capping the sand and gravel with 2.5 feet of clean gravel and cobble. Two proposed encroachments are to upgrade existing culverts in the western and eastern gullies. Work for these encroachments will include excavation, removal of the existing culverts, replacement with new properly sized culverts, backfilling and compaction of fill, and rock armoring as necessary to minimize erosion. Three encroachments will install grade control structures to stabilize the three eroding gullies (western, eastern, and central). Work will include placing rock armor check dams to stabilize each gully. One encroachment is installation of a series of large wood structures and rip rap in Redwood Creek to promote bank stabilization and enhance instream habitat.
Contact Information
Name
Erika Winner
Agency Name
CA Fish and Wildlife
Job Title
Environmental Scientist
Contact Types
Responsible Agency
Address
Phone
Location
Coordinates
Cities
Briceland
Counties
Humboldt
Regions
Northern California
Cross Streets
approximately 0.25 miles southwest of the town of Briceland
Parcel #
220-061-011-000
Waterways
Redwood Creek watershed
Township
4S
Range
3E
Section
19
Base
Humboldt
Notice of Determination
Approving Agency
CA Fish and Wildlife
Approving Agency Role
Responsible Agency
Approved On
County Clerk
Humboldt
Final Environmental Document Available at
Humboldt County
Planning and Building Department
3015 H St, Eureka, CA 95501
Contact: Joshua Dorris
Phone: 707-445-7541
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
Yes
(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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