Santa Clara and Honby Wells PFAS Groundwater Treatment
Summary
SCH Number
2024080498
Public Agency
State Water Resources Control Board
Document Title
Santa Clara and Honby Wells PFAS Groundwater Treatment
Document Type
NOE - Notice of Exemption
Received
Posted
8/13/2024
Document Description
The Santa Clarita Valley Water Agency - Santa Clarita Water Division's (Santa Clarita Division) proposed project includes the Santa Clara and Honby Wells PFAS Ion Exchange (IX) Treatment Facility and Disinfection Facility at the location described above. The Santa Clarita Division will utilize IX treatment to remove per and polyfluoroalkyl substances (PFAS) form raw Santa Clara and Honby Well water, which have capacities of 1,500 gpm and 950 gpm, respectively The effluent from the IX vessels will then receive chloramination treatment at the Disinfection Facility. The IX Treatment Facility includes three bag filter units and one IX treatment train (two vessels operate in lead and lag configuration). The project proposal includes space on the project site for future expansion of the IX treatment facility, consisting of two additional IX vessels. The Disinfection Facility includes a sodium hypochlorite generation, storage, and feed system and a liquid ammonium sulfate storage and feed system. Both treatment facilities are equipped with the associated electrical equipment, Supervisory Control and Data Acquisition system and water quality measuring equipment.
Contact Information
Name
Naira
Agency Name
SWRCB
Job Title
Environmental Scientist
Contact Types
Lead/Public Agency
Phone
Location
Cities
Santa Clarita
Counties
Los Angeles
Regions
Southern California
Cross Streets
27100 Furnival Ave. & 26930 Ruether Dr., Santa Clarita
Zip
91351
Notice of Exemption
Exempt Status
Categorical Exemption
Type, Section or Code
Class 1 Existing Facilities, Class 3 New Construction or Conversion of Small Structures.
Reasons for Exemption
This proposed action qualifies for an exemption under CEQA guidelines section 15301 Class 1 Existing Facilities because it is a minor alteration of an existing public facility and it concerns proposed new mechanical equipment involving negligible or no expansion of use (i.e. no additional extraction of water) beyond that existing at the time of the lead agency’s determination.
This proposed action also qualifies for an exemption under CEQA guidelines section 15303 Class 3 New Construction or Conversion of Small Structures because the water main extension and treatment system reflect limited construction of facilities where only minor modifications are made.
None of the exceptions listed in Section 15300.2 of the CEQA Guidelines would apply to the proposed action
Attachments
Notice of Exemption
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