City of Dorris Wastewater Collection and Treatment Project


SCH Number
Lead Agency
City of Dorris
Document Title
City of Dorris Wastewater Collection and Treatment Project
Document Type
MND - Mitigated Negative Declaration
Present Land Use
Wastewater treatment plant, lift station, public road right-of-way/easements.

Document Description
The project includes improvements to the City’s wastewater collection system, Seattle Street Lift Station (LS), and wastewater treatment plant (WWTP) that are required in order to repair and replace aging infrastructure and improve efficiency in the wastewater treatment process. Improvements include replacing ±3,120 linear feet of 6-, 8-, and 10-inch sewer line and installing ±27,400 linear feet of cured-in-place pipe lining in existing sewer lines. The Seattle Street LS would be converted to a wet well and miscellaneous equipment would be upgraded and/or replaced. The force main between the LS and the WWTP would be replaced. Improvements at the WWTP include constructing a new headworks, an aeration basin and associated improvements, a separate disposal area in existing Pond 2, and a ±62-square-foot control/blower building. A SCADA system and emergency back-up generator would be installed. The existing access road from US 97 to the WWTP would be regraded and relocated within the City’s existing 20-foot-wide easement; an overhead power line to the WWTP would be installed immediately north of the road in a new 15-foot-wide utility easement. Underground electrical lines would be installed from the new electrical service to the new control/blower building. Groundwater monitoring wells would be installed around the WWTP. If funding allows, a photovoltaic solar system would be installed on the WWTP property south of the new aeration ponds.

Contact Information
Melissa High
City Administrator
Lead/Public Agency / Project Applicant
307 S. Main St.
Dorris, CA 96023

Phone : (530) 397-3511


41°57'29"N 121°55'43"W
Cross Streets
Total Acres
Parcel #
State Highways
Union Pacific
Butte Valley Elementary, Butte Valley High School
Indian Tom Lake

Notice of Completion

Review Period Start
Review Period End
Development Type
Waste Treatment:Sewer (Wastewater Treatment Plant and Collection System Improvements.)(MGD 0.074)
Local Action
Project Approval
Project Issues
Aesthetics Agriculture and Forestry Resources Air Quality Biological Resources Cultural Resources Cumulative Effects Drainage/Absorption Energy Flood Plain/Flooding Geology/Soils Greenhouse Gas Emissions Growth Inducement Hazards & Hazardous Materials Hydrology/Water Quality Land Use/Planning Mandatory Findings of Significance Mineral Resources Noise Population/Housing Public Services Recreation Schools/Universities Sewer Capacity Solid Waste Transportation Tribal Cultural Resources Utilities/Service Systems Vegetation Wetland/Riparian Wildfire
Reviewing Agencies
California Air Resources Board (ARB) California Department of Conservation (DOC) California Department of Forestry and Fire Protection (CAL FIRE) California Department of Parks and Recreation California Department of Transportation, District 2 (DOT) California Department of Water Resources (DWR) California Governor's Office of Emergency Services (OES) California Highway Patrol (CHP) California Native American Heritage Commission (NAHC) California Natural Resources Agency California Public Utilities Commission (CPUC) California Regional Water Quality Control Board, North Coast Region 1 (RWQCB) California State Lands Commission (SLC) Office of Historic Preservation State Water Resources Control Board, Division of Water Quality State Water Resources Control Board, Divison of Financial Assistance California Department of Fish and Wildlife, Northern and Eureka Region 1 (CDFW)


Draft Environmental Document [Draft IS, NOI_NOA_Public notices, OPR Summary Form, Appx,]
Appendix A - CalEEMod Reports   PDF 454 K Appendix B - Biological Study Report - City of Dorris   PDF 3003 K Draft IS-MND Dorris Wastewater System   PDF 2305 K NOA-NOI City of Dorris   PDF 109 K OPR Summary Form - City of Dorris   PDF 194 K
Notice of Completion [NOC] Transmittal form
Notice of Completion - City of Dorris   PDF 138 K
State Comment Letters [Comments from state reviewing agencies]
2021050374_CDFW Comment   PDF 178 K

Disclaimer: The Governor’s Office of Planning and Research (OPR) 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. You may also contact the OPR via email at or via phone at (916) 445-0613. For more information, please visit OPR’s Accessibility Site.

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