Water Treatment Plant Settling Basin Phase I and II


SCH Number
Public Agency
City of Eureka
Document Title
Water Treatment Plant Settling Basin Phase I and II
Document Type
NOE - Notice of Exemption
Document Description
The project entails removing a current sedimentation structure (Phase I) and building a new settling basin (Phase II) at the Water Treatment Plant at 3575 W Street in the City of Eureka in Humboldt County, California. Phase I work involves removing and disposing of internal mechanical equipment coated in lead-based paint, demolishing and removing the existing sedimentation unit, cutting and capping a waterline, hauling in aggregate base for Phase II, and removing three redwood trees. Phase II work involves developing a three-bay covered settling basin, paving for a new driveway and 6 new parking stalls, installing an oil/water separator, tying into an existing backflow preventer, and installing a water line extension with booster pump station. Phase II requires the installation of 225 lineal feet of water pipeline by conventional trenching within a 2-foot-wide trench at a depth of 4-foot minimum to 5-foot maximum. All trenching will occur within the property limits of the Water Treatment Plant. A total of approximately 70 cubic yard of material will be excavated and temporarily stockpiled adjacent to the trench.

Contact Information

Agency Name
City of Eureka
Job Title
Principal Planner
Contact Types
Lead/Public Agency


Northern California
Cross Streets
W Street

Notice of Exemption

Exempt Status
Categorical Exemption
Type, Section or Code
Class 1
Reasons for Exemption
The project meets this exemption because it involves the maintenance and minor alteration of an existing facility, the Water Treatment Plant, with no expansion of use. Further, the Lead Agency has determined that use of these categorical exemptions is not barred by one of the exceptions set forth in Section 15300.2 of the CEQA Guidelines.
County Clerk


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