Notice from the Reston Groundwater Dating Laboratory
May 1, 2021
This information is applicable to internal USGS projects only. The tritium/helium-3 noble gas contract is not for use outside of The USGS.
Effective May 1, 2021, the contract for tritium/helium-3 dating and noble gas analysis with The Trustees of Columbia University, NY, has ended. Alternatives for analysis of these samples include the Denver Noble Gas Lab of the USGS, and the Reston Stable Isotope Lab of the USGS.