Addendum 1_1 4 Dioxane Removal Pilot.pdf

This is Addendum 1 to a Request for Qualifications (RFQ) issued by the Cape Fear Public Utility Authority (CFPUA) in North Carolina for professional engineering consulting services related to a 1,4-Dioxane removal pilot project at the Sweeney Water Treatment Plant in Wilmington. The addendum clarifies two key technical and regulatory matters: the pilot system must maintain the existing biological filters' capacity to meet Surface Water Treatment Rule requirements at 5.0 gallons per square foot loading rates (equivalent to 44 million gallons per day of plant capacity), with historical re-rate testing demonstrating reliability at 6.0 gallons per square foot; and engagement with state regulators should focus on understanding approval requirements for an Application to Construct (ATC) if full-scale design and construction proceed, with consultation recommended from pioneering organizations such as Hampton Roads Sanitation District and Virginia Department of Environmental Quality to address regulatory concerns and incorporate necessary means and methods during the pilot phase. The Statement of Qualifications submission deadline remains Tuesday, September 1, 2026 at 2:00 PM as originally advertised.

All other terms and conditions of the original RFQ remain unchanged. The evaluation will assess project understanding and approach (30 percent), relevant firm experience with similar projects (25 percent), proposed staff experience and qualifications (25 percent), and cost-management and project-success record (20 percent). Responding firms must demonstrate substantial experience with drinking water treatment facilities and biological treatment processes, with highly desirable experience in 1,4-dioxane treatment and pilot-scale testing of emerging technologies. Insurance requirements include General Liability of $1 million per occurrence, Professional Liability of $2 million per loss, Workers Compensation of $500,000, and Auto Liability of $1 million. The anticipated Notice to Proceed is September 28, 2026, with design submittals progressing from 30 percent completion in December 2026 through final contract documents and permits by May 28, 2027. No contract value is disclosed at this qualifications phase.