Groundwater Monitoring at SSFL
Groundwater is monitored for both radiological and chemical contaminants at and surrounding SSFL in approximately 300 groundwater wells.
- 2006 Annual Groundwater Report, Volume I, February 28, 2007
- 2006 Annual Groundwater Report, Volume II, February 28, 2007
- 2007 Annual Groundwater Report, Volumes I & II, February 28, 2008
- 2008 Annual Groundwater Report. Text. February 27, 2009
- 2008 Annual Groundwater Report. Tables & Figures. February 27, 2009
- 2008 Annual Groundwater Report. Appendices. February 27, 2009
- 2009 Annual Groundwater Report. February 26, 2010
- 2010 Annual Groundwater Report March 1, 2011
- Addendum to 2010 Annual Groundwater Report, April 2011
- Appendix A - Monitoring Well and Piezometer Construction Data
- Appendix B - Precipitation and Seeps in the Vicinity of WS-09A
- Appendix C - Hydrographs
- Appendix D - Time Series Plots
- Appendix E - Laboratory Analytical Reports (Abridged in entirety to limit file size)
- Appendix F - Quality Assurance Assessment (Abridged to limit file size)
- Appendix G - Corrected Chemical Results
Complete results of all historical radiological data are provided in Appendix E of the 2009 Annual Report.
Gross alpha, gross beta |
Table E-I |
Tritium |
Table E-II |
Man-made beta/gamma emitting radionuclides |
Table E-III |
Naturally occurring gamma emitting radionuclides |
Table E-IV |
Specific radionuclides including strontium-90, radium-226, radium-228, uranium-234, uranium-235, uranium-238, thorium-228, thorium-230, thorium-232, plutonium-238, plutonum-239/240 and americium-241 |
Table E-V |
Tritium in Groundwater
In 1989 tritium was initially discovered in groundwater in several locations of Area IV. The data was presented in the quarterly and annual grounwater monitoring reports and the Annual Site Environmental Monitoring Reports (ASERs).
A study of the potential sources of tritium was conducted. Building 4010, the site of a SNAP reactor, was determined to be the most likely source of tritium. Other potential sources were identified as the SRE, Buildings 4024, 4028, and 4059.
- RI/RD-92-186, "Tritium Production and Release to Groundwater at SSFL." December 1, 1992
In 2004, a series of groundwater wells were installed to retrieve samples from the potential sources of tritium. Tritium was found in several wells surrounding the location of the former Building 4010, confirming the earlier study.
The status of tritium in groundwater has been presented in the various DOE public meetings, most recently at the June 2006 public meeting .