WRF-1 Chemical Injection Flash Mixer and Static Mixer Installation
Summary
SCH Number
2025080732
Public Agency
City of Corona
Document Title
WRF-1 Chemical Injection Flash Mixer and Static Mixer Installation
Document Type
NOE - Notice of Exemption
Received
Posted
8/18/2025
Document Description
The chlorine contact tank (CCT) at WRF No. 1 is currently fed by a 36-inch line. Sodium hypochlorite is injected directly into the chlorine contact tank, where it is mixed using a mechanical mixer. The sodium hypochlorite injection point will be relocated to the 36-inch line, just upstream of the tank, and a static mixer will be installed within the line to promote proper mixing. In addition, the installation of a new flow meter on the 36-inch line that can be placed within the buried vault upstream of the static mixer will take place. The project involves rebuilding the flash mixer used for chemical injection and mixing, and installing a static mixer for improving influent flow into the chlorine contact basin. This project is a key element in the overall infrastructure, ensuring sustained functionality and efficiency in the wastewater management , which is essential for the smooth operation of the facility.
Contact Information
Name
Katie Hockett,
Agency Name
City of Corona
Job Title
Assistant Utilities Director
Contact Types
Lead/Public Agency
Phone
Location
Cities
Corona
Counties
Riverside
Regions
Citywide
Other Location Info
2205 Railroad St., Corona, California 92880
Notice of Exemption
Exempt Status
Categorical Exemption
Type, Section or Code
Article 19, Class 2 (Replacement or Reconstruction) , Section 15302.c
Reasons for Exemption
The proposed modifications are contained within the existing infrastructure and will not result in any potential environmental impacts. The project aims to enhance the efficiency of the chlorine tank without introducing any new elements or expanding capacity. Mitigation measures will be employed including ensuring that potential noise impacts will be minimized. The modifications are consistent with the existing purpose and capacity of the chlorine contact tank, maintaining its core functionality while improving operational efficiency.
County Clerk
Riverside
Attachments
Notice of Exemption
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