WRF-1 Digester No. 2 Dome Replacement


SCH Number
Public Agency
City of Corona
Document Title
WRF-1 Digester No. 2 Dome Replacement
Document Type
NOE - Notice of Exemption
Document Description
The WRF 1 Digester Project involves replacing the corroded steel dome cover of Digester No. 2 with a new fixed steel cover, along with necessary civil, mechanical, and electrical upgrades. This project is essential for maintaining the facility's capacity to process up to 11.5 million gallons of sewage daily and for addressing critical safety and regulatory concerns. The beneficiaries of this project include the efficient return of the digester to service to ensure continued, safe, and efficient sewage treatment to the City of Corona and its residents.

Contact Information

Aftab Hussain
Agency Name
City of Corona
Job Title
Maintenance Manager
Contact Types
Lead/Public Agency


Citywide, Countywide
Other Location Info
The Water Reclamation Facility (WRF) 1 project site location is on City property located at 2205 Railroad St. Corona, California 92880.

Notice of Exemption

Exempt Status
Categorical Exemption
Type, Section or Code
State type and class number: State code Class 2 section number 15302.c
Reasons for Exemption
The WRF 1 Digester Project entails replacing the existing corroded steel dome cover of Digester No. 2 within the current infrastructure, ensuring no significant expansion in capacity or change in the facility's operational scope. This project is focused on restoring and enhancing the efficiency and safety of the existing digester, not introducing new elements that could lead to environmental impacts. Mitigation measures will be implemented to minimize any potential disturbances, such as noise, during the construction process. The upgrades are consistent with the original purpose and functionality of the digester, aiming solely at maintaining its reliability and compliance with safety standards, without altering its fundamental role in the sewage treatment process.
County Clerk


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