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MONTHYEARML23137A0782023-02-0101 February 2023 Public -Byron and Braidwood Commitment 10 Audit Call Questions RS-20-140, Proposed Changes to Decommissioning Trust Agreements2020-10-30030 October 2020 Proposed Changes to Decommissioning Trust Agreements ML19228A1562019-08-21021 August 2019 NRC-2017-000292 - Resp 1 - Interim (Formerly FOIA/PA-2017-0292), Agency Records Subject to the Request Are Enclosed (Released Set Interim Response 1 - NRC-2017-000292) ML19046A2222019-02-0808 February 2019 NRC-2019-000158 - Resp 1 - Final. Agency Records Subject to the Request Are Enclosed ML18291B3162018-10-17017 October 2018 E-Mailed NRC Information Request for Braidwood Station - IP71152 Documents and Support Requested for Onsite Review Sent 10/17/18 (DRS-M.Holmberg) ML17319A0762017-10-30030 October 2017 FOIA-2017-0677 - Resp 1 - Final. Agency Records Subject to Request Enclosed ML17117A6552017-04-13013 April 2017 E-Mailed Request for Information Dated 04/13/17 for Braidwood Station, Unit 2, Inservice Inspection (Msh) ML17034A3542017-02-0202 February 2017 Samuel Miranda Statement ML17018A4302017-01-0606 January 2017 Supplemental Request for Information - Braidwood Station MOD/50.59 Inspection ML15230A2362015-09-0303 September 2015 Tables 1 and 2 ML15106A7362015-04-23023 April 2015 Conference Call Submittals RA-15-019, Attachment 1 - Response to the Request for Additional Information - License Amendment Request to Adopt Emergency Action Level Schemes Pursuant to NEI 99-01, Revision 6, Development of Emergency Action Levels for Non-Passive Reactors2015-03-0202 March 2015 Attachment 1 - Response to the Request for Additional Information - License Amendment Request to Adopt Emergency Action Level Schemes Pursuant to NEI 99-01, Revision 6, Development of Emergency Action Levels for Non-Passive Reactors ML15071A1192015-03-0202 March 2015 Attachment 1 - Response to the Request for Additional Information - License Amendment Request to Adopt Emergency Action Level Schemes Pursuant to NEI 99-01, Revision 6, Development of Emergency Action Levels for Non-Passive Reactors ML14191B1482014-07-17017 July 2014 Updated Talking Points for July 17th Meeting with Exelon Regarding Braidwood and Byron AFW Cross-tie Amendment ML14188A2482014-07-0707 July 2014 AFW Cross-tie Amendment - Talking Points for Public Teleconference ML14007A0942013-12-19019 December 2013 Response to NRC Request for Additional Information, Dated November 21, 2013, Related to the Byron and Braidwood Stations, Units 1 and 2 License Renewal Application, Byron Station Applicant'S Environmental Report. Part 10 of 15 ML14007A0832013-12-19019 December 2013 Response to NRC Request for Additional Information, Dated November 21, 2013, Related to the Byron and Braidwood Stations, Units 1 and 2 License Renewal Application, Byron Station Applicant'S Environmental Report. Part 2 of 15 ML14007A0892013-12-19019 December 2013 Response to NRC Request for Additional Information, Dated November 21, 2013, Related to the Byron and Braidwood Stations, Units 1 and 2 License Renewal Application, Byron Station Applicant'S Environmental Report. Part 14 of 15 ML14007A0882013-12-19019 December 2013 Response to NRC Request for Additional Information, Dated November 21, 2013, Related to the Byron and Braidwood Stations, Units 1 and 2 License Renewal Application, Byron Station Applicant'S Environmental Report. Part 13 of 15 ML14007A0842013-12-19019 December 2013 Response to NRC Request for Additional Information, Dated November 21, 2013, Related to the Byron and Braidwood Stations, Units 1 and 2 License Renewal Application, Byron Station Applicant'S Environmental Report. Part 3 of 15 ML14007A0852013-12-19019 December 2013 Response to NRC Request for Additional Information, Dated November 21, 2013, Related to the Byron and Braidwood Stations, Units 1 and 2 License Renewal Application, Byron Station Applicant'S Environmental Report. Part 5 of 15 ML14007A0902013-12-19019 December 2013 Response to NRC Request for Additional Information, Dated November 21, 2013, Related to the Byron and Braidwood Stations, Units 1 and 2 License Renewal Application, Byron Station Applicant'S Environmental Report. Part 7 of 15 ML14007A0922013-12-19019 December 2013 Response to NRC Request for Additional Information, Dated November 21, 2013, Related to the Byron and Braidwood Stations, Units 1 and 2 License Renewal Application, Byron Station Applicant'S Environmental Report. Part 9 of 15 ML12056A0522012-03-12012 March 2012 Enclosure 6 - List of Power Reactor Licensees and Holders of Construction Permits in Active or Deferred Status ML1024506922010-09-0101 September 2010 EC 361017, Revision a, Evaluation of the Interim Remedial Action Pumping System ML1024506892010-09-0101 September 2010 EC 360234 Evaluation, Braidwood Station ML1024506882010-09-0101 September 2010 EC 360234, Eval - Mech, Braidwood Station ML1019702832010-06-16016 June 2010 EC 361965, Rev. 00 - Remediation of Tritium Contaminated Groundwater in the Vicinity of Vacuum Breaker #1 ML1019702802010-06-16016 June 2010 Attachment 2, Complex Troubleshooting, MA-AA-716-004, Revision 9 ML1017301232010-06-0909 June 2010 Green Ticket Tritium Releases ML1019304602010-03-25025 March 2010 List of Historical Leaks and Spills at Us Commercial Nuclear Power Plants ML0924506942009-09-0101 September 2009 Supplemental Document Request to Support Baseline ISI Inspection Procedure 71111.08 ML0808000362008-03-13013 March 2008 List of Attendees, 03/13/2008 Summary of Meeting with Eight Operating Nuclear Power Plant Licensees to Discuss Emerging Metallurgical Issues Certain Welds in Reactor Coolant System for Pressurized-Water Reactors RS-08-010, Additional Information Supporting Request for Amendment to Technical Specification 5.5.16, Containment Leakage Rate Testing Program2008-01-31031 January 2008 Additional Information Supporting Request for Amendment to Technical Specification 5.5.16, Containment Leakage Rate Testing Program ML0732400242007-10-25025 October 2007 Examples of Max Thermal Power License Conditions ML0726301142007-09-14014 September 2007 / P. Paquin Ltr Amendment to Certificate of Compliance No. 9208 for the Model No. 10-142B Package (TAC L24117)/S121170 ML0726303192007-09-14014 September 2007 P. Paquin Ltr Amendment to Certificate of Compliance No. 6574 for the Model No. 3-82B Package (TAC L24116)/ Register User List ML0634705992006-12-14014 December 2006 Plant Service List ML0626503122006-09-0101 September 2006 Liquid Radiation Release Lessons Learned Task Force Final Report (Enclosure) ML0618403682006-06-27027 June 2006 Special Format for Chairman'S Back Q&A'S ML0617004032006-06-13013 June 2006 Groundwater Contamination ML0617003902006-06-13013 June 2006 Tritium Sample Results ML0617003952006-06-13013 June 2006 Site Surveying Matrix - Portions Outside the Scope of the Request ML0617004052006-06-13013 June 2006 Ground Water Contamination ML0617004022006-06-13013 June 2006 Portion Outside the Scope of the Request ML0617003872006-06-13013 June 2006 Tritium Sample Results ML0617003852006-06-13013 June 2006 within Last Year - Portions Outside the Scope of the Request ML0617003832006-06-13013 June 2006 Inadvertent Liquid Releases - Portions Outside the Scope of the Request ML0617003992006-06-13013 June 2006 S.A.F.E Tracking Board - Portions Outside the Scope of the Request ML0617003792006-06-13013 June 2006 Tritium Questions - Portions Outside the Scop of the Request 2023-02-01
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January 20, 2006 Braidwood Station, Units 1 and 2 Q~7
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Other Items of Interest:
As of December 9, 2005, the licensee has reported measurable levels of tritium in offsite groundwater monitoring wells that were installed over the last two weeks. During the subsequent monitoring they identified tritium in one residential drinking-water well. The 3 residential well is located approximately 1/2-mile North of the contaminated onsite V-
- areas, and the licensee measured approximately 1150 picoCuries per liter of tritium in 1- I ;
J E the well, which is a fraction of the EPA drinking water standard of 20,000 picoCuries per
- . liter. Other nearby residential wells have not shown any tritium above normal
=_. background. However, the licensee detected elevated levels of tritium (as high as
., approximately 33,700 picoCuries per liter) in monitoring wells in a vacant development
- -immediately offsite.
CD C.,
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The licensee continues to monitor and to develop options for remediation, with Region CD
=' ::E III inspection oversight. As of December 8, 2005, the licensee had a total of 40 C> Ca groundwater monitoring wells in place and was planning to install another 40 wells to ensure that the vertical characterization of the aquifer was fully determined.
CD Region III also has sent split samples from some offsite wells to the NRC's contract laboratory for independent analysis. In addition, Region III has obtained independent
January 20, 2006 samples from four of the residents nearest to the site boundary. The resident with the measurable tritium level was contacted by Region III staff, but was satisfied with the licensee's actions and did not desire any additional sampling.
The licensee has arranged a meeting with the nearby residents for Monday, December 12, 2005, at its Training Building. State representatives of the Illinois Emergency Management Agency, Illinois Environmental Protection Agency, and Department of Public Health are planning to attend. In addition, two members of the Region III staff are also planning to attend. No media or other members of the public have been invited. -.
The licensee continues to attribute the contamination to leaks from its circulating blowdown line that occurred in 1998 and 2000. Along with circulating water, the licensee uses that line for liquid radioactive discharges from the plant. However, the licensee continues to evaluate the measurements to ensure that no additional leakage is occurring. While that investigation is ongoing, the licensee has suspended all discharges through that line and indicated that it can maintain that position-for approximately 18 days.
A non-licensed operator identified a pool of water (about 1-2 ft in diameter) near the the river screen house. The pool was located above a buried sample line running from the (N circulating water blowdown line to the river screen house. The licensee suspects that the water may originate from this line. The sample line is a 2 inch diameter carbon steel pipe. The pool of water was located on property owned by Exelon. Sampling for this area is planned but no test results were available yet.
On December 16, 2005, the State of Illinois Environmental Protection Agency issued the licensee a Violation Notice for contaminating the groundwater. On December 20, 2005, members of the Region III staff participated in a meeting between and Illinois Environmental Protection Agency and the licensee in Springfield, Illinois, whichithe licensee discussed the apparent origin of the contamination, its monitoring t 'ro'gram and "
initial characterization, and the its future plans. Following that meeting, the Region, NRR, EDO, and OGC staffs conducted an internal meeting to discuss regulatory authority and preemption. A subsequent NRC internal meeting is scheduled for January 18, 2006, to further discuss the Illinois violations and regulatory jurisdiction issues.
On January 16, 2006, a resident noticed water pooling up around Vacuum Breaker 7, located off the owner controlled property, and informed the licensee. The licensee reduced blowdown flow and the leak stopped. Initial samples found no activity above background, and confirmatory samples were taken. The licensee is .....
still investigating the failure m chanism. Region III and headquarters staffs (OGC, NRR, OEDO, STh s e meetings with the State regulators on January 23, 2006, anrd with nearby residents on January 26, 2006, which Region III plans to attend.