Henry J. Mills Water Treatment Plant Diffuser Replacement Project


SCH Number
Public Agency
Metropolitan Water District of Southern California
Document Title
Henry J. Mills Water Treatment Plant Diffuser Replacement Project
Document Type
NOE - Notice of Exemption
Document Description
The project proposes to modify the existing filter backwash hypochlorite diffuser in all of the filters in Modules 3 and 4 of the Mills facility. The modifications consist of extending the diffuser pipe into the lower gullet of the filters. The work area is encased in a concrete structure. Any water that must be drained from the filters will be sent to existing spill tanks. Discharge water will be tested for pH and if necessary will be trucked and disposed offsite. This project involves no expansion of existing use.

Contact Information

Debbie Drezner
Agency Name
Metropolitan Water District of Southern California
Contact Types
Lead/Public Agency



Notice of Exemption

Exempt Status
Categorical Exemption
Type, Section or Code
Section 15301, 15302
Reasons for Exemption
The proposed project consists of the operation, repair, maintenance, or minor alteration of existing public structures, facilities, mechanical equipment, or topographical features, involving negligible expansion of use beyond that existing at the time of the lead agency's determination. The proposed project also involves the replacement or reconstruction of existing structures and facilities where the new structure will be located within the same area as the structure replaced and will have substantially the same purpose and capacity as the structure replaced.

Disclaimer: The document was originally posted before CEQAnet had the capability to host attachments for the public. To obtain the original attachments for this document, please contact the lead agency at the contact information listed above. You may also contact the OPR via email at state.clearinghouse@opr.ca.gov or via phone at (916) 445-0613.

Download CSV New Search Print