Rocky Flats

After the Jefferson Parkway Public Highway Authority reported an elevated soil sample result of 264 picocuries per gram (pCi/g) of plutonium along Indiana Street in August 2019, CDPHE assessed different facets of technical questions raised by the project and a single soil sampling result of 264 pCi/g of plutonium in surface soil. Below you will find the documents and data associated with this multi-disciplinary report: 

Colorado Department of Public Health and Environment's Jefferson Parkway review 

• CDPHE presentation on review of potential radiation doses during construction of the Jefferson Parkway
• CSU sampling, analytical procedures and results Jefferson Parkway sample set
• 2019 GIS soil sample results map.

Site map

Information about wildfires and the DOE Rocky Flats site

Updates

• CDPHE Response to Westminster City Council Follow-Up Questions - Study Session Meeting. July 15, 2024
• Rocky Flats wins 2021 EPA Site Reuse Award. May 25, 2021
• March 2021 - Minor CDPHE correction.
• Interactive GIS soil sample location map. January 14, 2020
• Jefferson Parkway project construction worker dose assessment. November 5, 2019
• 2019 breast cancers in young women around Rocky Flats. October 7, 2019
• Community letter on Parkway soil sample. August 20, 2019
  • ​Community letter attachments.
• 2017 supplemental study on thyroid and rare cancers completed by CDPHE. September 1, 2017
• CERCLA Fifth Five-Year Review for Rocky Flats Site. July 21, 2022
• CDPHE's Cancer Registry releases updated Rocky Flats cancer study. January 5, 2017

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