Vogtle 3&4: Supervisior and Two Employees Falsifying Drug Testing

I don't see any attempt to find out how widespread the drug falsification is?    

EA-19-089
 Mr. Michael Yox  Regulatory Affairs Director  Southern Nuclear Operating Company Vogtle 3 & 4  7835 River Road, Bldg. 140  Waynesboro, GA 30830
 SUBJECT: NRC OFFICE OF INVESTIGATION REPORT 2-2018-0029

Dear Mr. Yox:
 This refers to the investigation completed on July 23, 2019, by the Nuclear Regulatory Commission’s (NRC) Office of Investigations (OI), at Southern Nuclear Company’s (SNC) Vogtle Nuclear Plant Units 3 & 4 construction project.  The investigation was conducted to determine if a contract supervisor and two contract employees at Southern Nuclear Operating Company's Vogtle Electrical Generating Plant, Unit 3 (Vogtle), in Waynesboro, Georgia, willfully violated a licensee procedure regarding compliance with fitness for duty (FFD) requirements, which included any attempt to subvert the required testing process.  Based on the investigation, OI did substantiate that a contract supervisor and one contract employee deliberately violated a licensee procedure regarding compliance with FFD requirements in that they attempted to subvert the required testing process.
 After considering the information developed during the investigation, the NRC has concluded no further action is warranted. This decision was made after considering corrective actions you have taken to resolve the issues.  Specifically, SNC performed an investigation, substantiated the concerns, developed appropriate corrective actions and ultimately placed all three individuals in question into the Personnel Access Data System (PADS) with a lifetime ban.