Serrano Water District PFOA/PFAS Treatment Project

2 Documents in Project


SCH Number
Public Agency
Serrano Water District
Document Title
Serrano Water District PFOA/PFAS Treatment Project
Document Type
NOE - Notice of Exemption
Document Description
The PFAS treatment equipment to be installed as part of the Project will be constructed on an approximately 95-foot by 40- foot concrete pad and would consist of up to twelve (12) GAC or ion exchange filtration vessels measuring approximately 16.5 feet in height and 10.5 feet in diameter. The determination of which filtration technology to use will be made at a later date by SWD Staff after additional pilot testing by OCWD, but either technology will take up approximately the same footprint within the disturbed area of the SWD maintenance yard, and both technologies are anticipated to have similar insignificant environmental impacts. Both technologies would be used to remove PFAS compounds from extracted groundwater. Existing pipelines within the Project site would be reconfigured to connect extraction wells 3 and 5 to the filtration equipment, which would consist of the installation of new 1011 and 12" water lines within the maintenance yard. Construction would be conducted in two phases, with concrete pad construction and pipeline realignment occurring on or after January 2020, and vessel installation occurring in approximately May 2020. Upon completion of the installation of the facilities, screening trees would be planted along the perimeter of the maintenance yard to limit any private aesthetic impacts of the Project. SWD has determined that the Project would have largely temporary minor impacts within an already disturbed footprint that has long been used for the production and treatment of water. The Project does not involve expansion of an existing use, and is therefore eligible for a Class 3 Categorical Exemption pursuant to CEQA Guidelines §§ 15301 and 15303.

Contact Information

Jerry Vilander
Agency Name
Serrano Water District
Contact Types
Lead/Public Agency


Villa Park
Cross Streets
18021 Lincoln Street
Other Location Info
The Project would be located at the District's existing extraction well site within the Serrano Water District maintenance yard

Notice of Exemption

Exempt Status
Categorical Exemption
Type, Section or Code
15303 - Class 3
Reasons for Exemption
The proposed project involves limited construction at an existing well site for the installation of a water filtration system for existing wells. It will not change the capacity or character of the wells, or result in any new non-temporary environmental impacts. Any private aesthetic impacts of the Project will be addressed via screening trees that will be planted by the District as part of the Project. The Project accordingly falls within Class 3 descriptions for a minor alteration to an existing water production facility and the new construction of small structures for water treatment purposes within an existing disturbed footprint.


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