The U.S. Army Corps of Engineers requires a contractor to analyze up to 40 water samples from thawing permafrost areas for iron stable isotopes (56Fe and 57Fe) using MC-ICP-MS. The contractor must perform all analyses by March 1, 2027, with samples collected by CRREL between June and September 2026 and shipped to the contractor’s facility. Work will be performed at the contractor’s facility, with no travel required, and deliverables shipped to Fort Wainwright, Alaska. No specific budget amount is provided in the description. This is a Lowest Price Technically Acceptable (LPTA) procurement under NAICS 541380, open to full competition.