Ralston Afterbay Sediment Management and Enhancement/Restoration Activities (Streambed Alteration Agreement EPIMS Notification No. PLA-42512-R2)
17 Documents in Project
Summary
SCH Number
2012082046
Lead Agency
Placer County Water Agency
Document Title
Ralston Afterbay Sediment Management and Enhancement/Restoration Activities (Streambed Alteration Agreement EPIMS Notification No. PLA-42512-R2)
Document Type
NOD - Notice of Determination
Received
Posted
5/31/2024
Document Description
In accordance with the Federal Energy Regulatory Commission license for the Middle Fork American River Project, the Permittee will conduct the following project activities to ensure the downstream movement of sediments and gravels that are otherwise retained in Ralston Afterbay: 1) periodic excavation of up to 101,000 cubic yards of sediment from Ralston Afterbay; 2) sediment augmentation at two (2) sites located downstream of Ralston Afterbay Dam; 3) gravel placement to enhance trout spawning habitat immediately downstream of Ralston Afterbay Dam; and 4) periodic opening of the low-level dam outlet during high-flow events to allow mobilization of accumulated sediment near the outlet.
Contact Information
Name
Patrick Moeszinger
Agency Name
CALIFORNIA DEPARTMENT OF FISH &WILDLIFE
Job Title
Senior Environmental Scientist (Specialist)
Contact Types
Responsible Agency
Phone
Location
Counties
Placer
Regions
Northern California
Other Location Info
Project is located at Ralston Afterbay (also known as Oxbox Reservoir) at the confluence of the Middle Fork American River and Rubicon River, in the Counties of Placer and El Dorado, State of California. The project includes Ralston Afterbay as well as the Middle Fork American River immediately downstream (within 0.48 mile)
Notice of Determination
Approving Agency
CALIFORNIA DEPARTMENT OF FISH AND WILDLIFE
Approving Agency Role
Responsible Agency
Approved On
County Clerk
Placer
Final Environmental Document Available at
CDFW Region 2 Headquarters
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
No
(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
Yes
Attachments
Notice of Determination
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