Amendment 3 - Questions and Answers and Closing Extension Date - Whiteriver Service Unit Water Treatment Services

The Indian Health Service, Department of Health and Human Services, seeks chemical water treatment services for the Whiteriver Service Unit in Arizona, with quotations due August 7, 2026 at 1:00 PM MST and technical questions due August 3, 2026 at 5:00 PM MST. This is a Total Small Business Set-Aside procurement.

Place of performance is Whiteriver, AZ 85941. The contractor shall provide monthly onsite inspections, water testing, and chemical treatment for seven interconnected systems: two Central Plant cooling towers (Baltimore Aircoil Series 1500, installed 2002), two Central Plant condensing boilers (Fulton VTG-4000DF, installed 2023), one Central Plant water softener (MGT System 14, installed 2020), Central Plant heating and cooling closed loops, one Specialty Services Building cooling tower (Marley Recold JW Series, installed 2015), and one SSB closed loop. Testing must occur mid-month and measure nine parameters: alkalinity, calcium hardness, conductivity, conductivity cycles, freeze point, molybdenum, on-Trac, pH, and total hardness against specified limits. The contractor must supply all testing reagents, kits, instrumentation, and treatment chemicals; perform equipment inspections and leak detection; test chemical pumps and blow-down valves; deploy mild steel and copper corrosion coupons on 90-day cycles; and submit monthly reports to the Contracting Officer's Representative within seven days of the mid-month visit, including product descriptions, Safety Data Sheets, and comprehensive Program Manuals.

Contract structure is Firm-Fixed-Price with a one-year base period and four one-year option periods. Award will be made on a best value basis considering technical capability, experience and qualifications of personnel, and past performance (2–5 references required from the past five years). The predecessor contract, Purchase Order 75H71221P00052 awarded to Green and Sustainable Services, LLC, had an annual amount of $72,238.08 and ran from March 1, 2021 through August 31, 2026. NAICS 541380, PSC H145. Quotations must be firm for at least 120 days; all invoices must be submitted electronically through Treasury Invoice Processing Platform.