Pre-Advertisement Notice for Chattahoochee Water Treatment Plant SCADA Improvement

The City of Atlanta Department of Watershed Management is issuing a competitive solicitation for comprehensive SCADA (Supervisory Control and Data Acquisition) improvements and modernization at the Chattahoochee Water Treatment Plant in Fulton County, Georgia. This procurement seeks qualified firms to perform upgrades, replacements, and system modernization activities including replacement of the outdated GE iFix SCADA HMI system with AVEVA System Platform, upgrades to obsolete programmable logic controllers (PLCs) and remote input/output stations, conversion of ControlNet networks to Ethernet/IP architecture with fiber ring connectivity, and replacement of control panels across multiple facility systems (raw water pump stations, chemical buildings, filter buildings, sedimentation basins, and finished water pump stations). The project is organized into eight primary tasks with a 360-day timeline from Notice to Proceed, including implementation plan submission (30 days), submittals and test plans (90 days), equipment purchase (180 days), Factory Acceptance Testing and storage (210 days), equipment delivery (240 days), installation and onsite testing (330 days), training (345 days), and operations/maintenance manuals delivery (360 days). Required deliverables include detailed project proposals, technical compliance documentation, three verifiable project references, resumes of the project manager and lead programmer, a comprehensive Schedule of Values identifying costs for specific components and contingencies, shop drawings and submittals, Factory Acceptance Test plans with four days of testing and attendee accommodations, and five consecutive days of operational site testing with 14 days' advanced notice. Minimum qualifications require offerors to demonstrate at least five years of experience completing comparable end-to-end integration projects with five successful contracts within the past five years, a minimum of ten years in business providing similar services, at least two on-time project completions, and satisfactory past performance on at least three prior projects involving Allen-Bradley ControlLogix PLC and SCADA upgrades at water or wastewater treatment facilities. Key personnel must include a Project Manager with at least seven years in industrial controls projects and two years in SCADA upgrade leadership roles, and a Lead Programmer/Controls Engineer with seven years of ControlLogix PLC programming and SCADA/HMI development experience with AVEVA or similar platforms. The pre-advertisement notice was posted May 8, 2026, with a deadline for responses by May 29, 2026, and a Pre-Solicitation Conference will be held to clarify requirements and address vendor questions.

The solicitation documents do not specify set-aside designations or restrictions limiting participation to particular enterprise categories or disadvantaged business enterprises, suggesting this opportunity is open to qualified vendors generally. There are no identified incumbent vendors or current contractors listed in the procurement documentation. The existing infrastructure that prospective contractors must integrate with includes the current GE iFix SCADA HMI system, Allen-Bradley ControlLogix PLC architecture, ControlNet network communications, operator interface terminals (OITs), and approximately 2,000 feet of existing Ethernet CAT 5E and multimode fiber cable infrastructure at the Chattahoochee Water Treatment Plant as documented in the network diagram provided. Vendors must conduct a pre-submittal site survey at no additional cost to the City to verify existing specifications and infrastructure conditions. Background checks will be required for all programming personnel before accessing City of Atlanta equipment and systems. While specific budget ranges or award values are not disclosed in the pre-advertisement notice, the comprehensive scope encompassing system-wide SCADA modernization, multiple control panel replacements, Factory Acceptance Testing, and operational training suggests a substantial contract value; the Schedule of Values framework and separate identification of cost items for the Finished Water Pump Station upgrade and contingencies indicate flexibility in potential project scope and associated costs.