Electric Submersible Mixers

Fairfax County, Virginia, through its Department of Public Works and Environmental Services Wastewater Treatment Division, is seeking to establish a term contract for Electric Submersible Mixers and Overhaul services via Invitation for Bid (IFB) 2000004255. The procurement specifically targets two sizes of submersible mixers: 2.5-3 horsepower primary effluent mixers and 4-4.7 horsepower screened aerated mixers, both designed for wastewater treatment applications. These mixers must be compatible with existing 2-inch by 2-inch Flygt guide rail systems, feature propeller speeds not exceeding 1,150 RPM, and be capable of continuous underwater and air operation. Technical specifications require mixers constructed with Type 316 stainless steel, dual nitrile rubber or Viton O-ring seals, dynamically balanced propellers, and specific motor and electrical characteristics. The sealed bid submission is due electronically through the Fairfax County Bonfire procurement portal by December 17, 2025, at 11:00 AM, with the contract term extending from the award date through April 30, 2028, and potential for three optional one-year renewals.

The solicitation encourages participation from diverse business types, including small businesses, minority-owned, women-owned, service-disabled veteran-owned, and micro businesses. Vendors must demonstrate a minimum of three years of experience in providing the requested goods or services and submit at least three current references. Fairfax County does not discriminate against faith-based organizations and is designated as an Equal Opportunity Purchasing Organization. Contractors must maintain specific insurance coverages, including Workers' Compensation, Commercial General Liability, and Automobile Liability insurance, with minimum coverage amounts of $1,000,000 per occurrence. While no specific award value is explicitly stated, the term contract structure suggests an ongoing procurement with flexible ordering based on the county's needs. Bidders must be organized to transact business in Virginia and provide their State Corporation Commission identification number or explain why authorization is not required. The county reserves the right to award the contract in the aggregate, by line item, by section, or by manufacturer, with the goal of securing the most advantageous solution for the Wastewater Treatment Division.