ML20030A128
| ML20030A128 | |
| Person / Time | |
|---|---|
| Issue date: | 01/29/2020 |
| From: | Christopher Grossman Division of Decommissioning, Uranium Recovery and Waste Programs |
| To: | Ponte J GLC Associates One |
| Grossman C | |
| References | |
| Download: ML20030A128 (1) | |
Text
From: Grossman, Christopher To: jponte@unimetal.com Cc: Semancik, Jeffrey; Firsick, Michael; Schwartzman, Adam; Chapman, Gregory; Nelson, Bob; Kauffman, Laurie; Dimitriadis, Anthony; Koenick, Stephen; Jackson, Todd
Subject:
NRC Staff Review of the Seth Thomas Cleanup Plan Date: Wednesday, January 29, 2020 4:47:00 PM Mr. Ponte-The U.S. Nuclear Regulatory Commission staff has reviewed the cleanup plan for the former Seth Thomas Clock Factory site, which we received on November 21, 2019 and the staff has identified Requests for Additional Information (RAIs) below.
If clarification is needed on the RAIs below, I am happy to discuss with you later this week or next.
NRC staff would consider an email response to these RAIs adequate for us to complete our review and move forward.
Christopher Grossman Project Manager USNRC 301-415-0140 RAIs for Seth Thomas Cleanup Plan
- 1. Sections 2.3 and 5.0 of the Cleanup Plan as well as the Table of Contents mentions that detailed DandD Version 2.4 results are presented in Appendix A. However, Appendix A was absent from the version transmitted to NRC. Please provide the detailed DandD results in Appendix A that support the Derived Concentration Guideline Levels reported in Section 5 of the Cleanup Plan. This information is needed to support NRC staff review of the DCGL methodology.
- 2. Section 8.2 of the Cleanup Plan discusses the Contamination Control Program. Please explain how areas will be assessed to have controls released. Staff anticipate surveys to release controls on the areas being remediated likely on a daily frequency. This information is needed to support the NRC staff review that the public dose limit of 100 millirem per year (1 millisievert per year) will not be exceeded and that these controls could minimize cross contamination.
- 3. Section 8.3 of the Cleanup Plan discusses survey instrumentation. Please clarify the survey instruments that will be used and how the instruments will be calibrated for the variety of radioactive emissions anticipated. This information is needed to support the staff review that the survey instruments will be appropriate to detect the type of contamination expected.
- 4. Section 9.0 of the Cleanup Plan discusses environmental monitoring. Please explain the means used to assess the emissions from the HEPA units and applicable action limits that will be in place. This should include how public exposure will be assessed, if needed. This information is needed to support the NRC staff review that the public dose limit of 100 millirem per year (1 millisievert per year) will not be exceeded and to limit the release of radioactive materials.