Wastewater Treatment Plant (WWTP) Improvement Project
4 Documents in Project
Summary
SCH Number
2018122012
Lead Agency
City of Dunsmuir
Document Title
Wastewater Treatment Plant (WWTP) Improvement Project
Document Type
NOD - Notice of Determination
Received
Posted
5/14/2026
Document Description
The project includes improvements to the City’s Wastewater Treatment Plant (WWTP), including installation of a new headworks, screen, Parshall flume, grit removal chamber, selector, and lift station; construction of a new office/laboratory building; construction of a new dechlorination building with sodium bisulfite equipment and a dosing system; construction of a new solids handling building; removal of accumulated sediments from the percolation ponds; and raising the dikes around three of the percolation ponds; installing groundwater monitoring wells; and constructing a new outfall south of the existing outfall. The improvements will replace aging and inefficient equipment, improve the treatment process, and ensure compliance with Central Valley Regional Water Quality Control Board requirements.
Contact Information
Name
Blake Michaelsen
Agency Name
City of Dunsmuir
Job Title
Interim City Manager
Contact Types
Lead/Public Agency / Project Applicant / Parties Undertaking Project
Phone
Email
Location
Coordinates
Cities
Dunsmuir, Unincorporated Area
Counties
Shasta, Siskiyou
Regions
Citywide, Northern California, Unincorporated
Cross Streets
South 1st Street, Jesse James Rd, Craig View Dr
Zip
96025
Total Acres
13
Parcel #
030-380-070 (Siskiyou County) and 014-060-003 (Shasta County)
State Highways
I-5
Railways
Union Pacific Railroad
Airports
Dunsmuir Muni-Mott
Schools
Dunsmuir Elementary School, Dunsmuir High School
Waterways
Sacramento River, Little Castle Creek, Soda Creek, Bear Creek, Hedge Creek
Township
38N
Range
04W
Section
1
Base
MDM
Notice of Determination
Approving Agency
City of Dunsmuir
Approving Agency Role
Lead Agency
Approved On
County Clerks
Shasta, Siskiyou
Final Environmental Document Available at
City of Dunsmuir
City Hall
5915 Dunsmuir Avenue
Dunsmuir, CA 96025
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
Yes (Addendum to Previously Adopted Mitigated Negative Declaration)
(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
Disclaimer: The Governor’s Office of Land Use and Climate Innovation (LCI) accepts no responsibility for the content or accessibility of these documents. To obtain an attachment in a different format, please contact the lead agency at the contact information listed above. For more information, please visit LCI’s Accessibility Site.