Building 215 Clean Room HEPA Filter Replacement

NIST is conducting market research for a major cleanroom renovation at Building 215 (Advanced Measurement Laboratory) on its Gaithersburg campus. The effort will replace approximately 1,200 HEPA filters, repair or replace about 70 VAV terminal units, upgrade airflow monitoring devices, install new exhaust‑air control valves, and modify associated ductwork. All work must be performed while keeping the cleanroom operational, using a phased‑outage approach of roughly 19 phases, each with a nine‑day, 24‑hour continuous construction window. The agency seeks industry feedback on feasibility, risks, realistic outage durations, and a rough‑order‑of‑magnitude cost estimate, as well as input on how the outage schedule impacts pricing and risk. • Replace ~1,200 HEPA filters and associated filter housings. • Repair/replace ~70 VAV terminals and ~54 airflow monitoring stations. • Re‑balance and certify HVAC, ductwork, and exhaust systems across multiple phases while maintaining research activities. • Provide detailed cost breakdowns and comments on the nine‑day phased‑outage schedule.