Revision to Conditional Use Permit No. 41-04


SCH Number
Public Agency
State Water Resources Control Board
Document Title
Revision to Conditional Use Permit No. 41-04
Document Type
NOE - Notice of Exemption
Document Description
The San Gabriel Valley Water Company (SGVWC) proposed to construct an approximately 4,600-square-foot ion exchange (IX) treatment facility to remove per and polyfluoroalkyl substances (PFAS) from the raw water of three existing wells (Wells 2D, 2E, and 2F) at Plant No. 2. The IX treatment system includes four cartridge filters (three in operation, one standby), three treatment trains with two vessels operating in series in each train (lead-lag configuration). The IX system will have a capacity of 5,000 gallons per minute. The effluent from the IX vessels will then receive four-log virus inactivation treatment with sodium hypochlorite at the reservoirs.

Contact Information

Naira Ghukasyan
Agency Name
State Water Board
Job Title
Environmental Scientist
Contact Types
Lead/Public Agency


Los Angeles
Southern California
Cross Streets
4921 Santa Anita Ave (4921 Kings Row)

Notice of Exemption

Exempt Status
Categorical Exemption
Type, Section or Code
Class 1 Existing Facilities
Reasons for Exemption
In accordance with the requirements of the California Environmental Quality Act (CEQA) of 1970, as amended, this project is Categorically Exempt under Section 15301 (Class 1 – Existing Facilities) of the CEQA Guidelines, as amended.


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