WRF-1 Chemical Injection Flash Mixer and Static Mixer Installation

The City of Corona is undertaking a critical infrastructure upgrade at Wastewater Reclamation Facility No. 1, focusing on enhancing the chemical injection and mixing system serving the chlorine contact tank. The project involves relocating the sodium hypochlorite injection point from within the tank itself to the 36-inch influent line just upstream, installing a static mixer within that line to ensure uniform chemical dispersion, rebuilding the existing flash mixer to maintain reliable chemical dosing, and adding a new flow meter within a buried vault upstream of the static mixer. These modifications are designed to improve mixing efficiency, reduce variability in disinfectant concentration, and ensure consistent performance of the chlorine contact basin without expanding facility capacity. All work is confined to existing infrastructure and is being conducted at the facility located at 2205 Railroad Street, Corona, California. The project has been categorized under California’s Environmental Quality Act (CEQA) as a categorical exemption under Class 2, Section 15302(c), which permits replacement or reconstruction of existing facilities with no significant environmental impact, eliminating the need for extensive environmental review. Administrative oversight is managed by the City of Corona Utilities Department, with Tom Moody, Director of Utilities, serving as the official applicant and signatory, and Katie Hockett, Assistant Utilities Director, acting as the primary point of contact. While the project description and scope are clearly defined, formal procurement elements such as contract value, pricing, evaluation factors, payment details, contracting officer roles, or federal acquisition regulation clauses are not provided, suggesting this is a municipal capital project initiated through internal administrative processes rather than a competitively bid federal contract. No specifications for packaging, labeling, preservation, or inspection standards beyond compliance with local public works practices are outlined, and no submission deadline or electronic procurement portal has been established, indicating a simplified, locally administered implementation process.