Alturas Wastewater Treatment Plant Improvement Project
7 Documents in Project
Summary
SCH Number
2021100579
Lead Agency
City of Alturas
Document Title
Alturas Wastewater Treatment Plant Improvement Project
Document Type
NOD - Notice of Determination
Received
Posted
8/13/2026
Document Description
The State Water Resources Control Board (State Water Board) is funding the Project referred to internally as Alturas Wastewater Treatment Plant Improvement Project. The Project consists of decommissioning the existing wastewater treatment plant and routing raw wastewater through an 11,000 linear feet force main (installed trenchlessly under the Pit River and along the County Road 54 right-of-way) to the new offsite aeration, evaporation and percolation ponds (1.4 miles southwest of the existing WWTP), where it will be treated and disposed of via land discharge, with no in-water work required.
PROJECT NUMBER: 8292-210
Contact Information
Name
Cedric Irving
Agency Name
State Water Resources Control Board
Job Title
Environmental Scientist
Contact Types
Responsible Agency
Phone
Name
Jason Diven
Agency Name
City of Alturas
Job Title
Director of Public Works
Contact Types
Lead/Public Agency
Phone
Email
Location
Cities
Alturas, Unincorporated Modoc County
Counties
Modoc
Regions
Southern California, Unincorporated
Other Information
The City of Alturas operates its existing wastewater treatment plant (WWTP) just south of the city limits in unincorporated Modoc County, California. This facility, located along the North Fork Pit River, provides primary and secondary treatment before discharging treated effluent to the Pit River. The project's study area covers about 290 acres, encompassing the current WWTP, 1.4 miles of road right-of-way along County Road 54, and approximately 270.4 acres of undeveloped land planned for new offsite aeration ponds and land application treatment and disposal.
Notice of Determination
Approving Agency
State Water Resources Control Board
Approving Agency Role
Responsible Agency
Approved On
County Clerk
Modoc
Final Environmental Document Available at
1001 I Street, 16th Floor, Sacramento, CA 95814.
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
Yes
Attachments
Notice of Determination
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