Abingdon Water Treatment Plant pH Control System Upgrade

Harford County Department of Procurement is requesting bids for removal and replacement of pH control system equipment at the Abingdon Water Treatment Plant under Bid No. 27-104, with bids due September 16, 2026 at 1:00 p.m. EST. Bidders must be prequalified in Category M1 (Pump Stations and Treatment Plants) and hold Maryland contractor licensing — both are mandatory eligibility filters.

The scope includes demolition of the existing Soda Ash System; installation of a new Soda Ash Feed System with silo, two volumetric screw feeders, two delumpers, two dissolving tanks, two transfer pumps with VFD control, dust collector/bin vent filters, silo air dehumidifier, and packaged air compressor; installation of an intermediate Soda Ash Mixing Tank System with storage tank, tank mixer, and three day tank transfer pumps; removal of existing Sodium Hydroxide full scale pilot testing equipment; installation of a permanent Caustic Soda Feed System with remote fill station, two bulk storage tanks, two day tanks, and two transfer pumps; installation of curtain system and exhaust purge fan in the caustic soda metering pump area; and associated electrical, instrumentation, and process control systems. Substantial completion is required within 450 calendar days, with all work completed within 510 calendar days after contract commencement. The contractor must perform a minimum of 50 percent of work with its own forces, excluding only material purchases.

The bid consists of lump sum items (Part A) and contingent unit price items (Part B) covering additional SCADA programming hours, electrical conduit, and roofing repair. Bid security of five percent of the total bid price, performance bonds, payment bonds, and maintenance bonds are required. Liquidated damages are $2,500 per day for failure to achieve substantial completion and an additional $2,500 per day for failure to complete remaining work. The pre-bid meeting was held August 20, 2026 at 9:00 a.m. EST. Questions were due August 21, 2026 at 1:00 p.m. EST. Bids remain subject to acceptance for 120 days after opening. The successful bidder must execute the agreement and furnish required bonds within 15 days of notice of award.