DRC-2024-006933

September 25, 2024
Jonathan C. Anderson
Environmental Compliance Manager
EnergySolutions, LLC
299 South Main Street, Suite 1700
Salt Lake City, UT 84111
RE: EnergySolutions' request for Compliance Status Change for Sum of Radium (Ra-226+Ra-228) in Monitoring Well GW-77; Ground Water Quality Discharge Permit, UGW450005: Request for Information.
Dear Mr. Anderson:
The Utah Division of Waste Management and Radiation Control is reviewingyour letter (CD-2024-110) concerning returning Compliance Monitoring Well GW-77 to a normal compliance sampling
schedule. In a Division’sletter dated May 25, 2006, titled “Permit Renewal Review - Request for Additional Information”, the Division of Radiation Control required a formula be used
to determine sum of radium, to account for the error terms of each individual value, the summation should be determined using the formula:
Where: Sr is the sum of radiumR226 is the reported value of Ra-226R228 is the reported value of Ra-228X1 is the Ra-226 error termX2 is the Ra-228 error term
The submitted letter does not use this equation for Sum of Radium, please explain why?
If you have any questions, please call Charles Bishop at [phone]
Sincerely,
Larry Kellium, Low-Level Radioactive Waste Section Manager
Division of Waste Management and Radiation Control
LK/CB/ar
c:Jeff Coombs, EHS, Health Officer, Tooele County Health Department
Bryan Slade, Environmental Health Director, Tooele County Health Department