The U.S. Geological Survey requires accelerator mass spectrometry radiocarbon analyses of organic material from sediment samples. All services will be performed at the contractor's facility, with FOB Destination to Anchorage, AK. The estimated period of performance is from March 1, 2026, to February 28, 2027, with a potential option year. Evaluation will be based on firm fixed price, technical capability, past performance, and past experience. All interested parties must be actively registered in SAM at the time of quote submission.