ML21208A212

1-0-Agenda - Subsurface Surveys Workshop July 2021

ML21208A212
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Issue date:	07/14/2021
From:	Thomas Aird NRC/RES/DRA
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Aird, Thomas - 301 415 2442
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Subsurface Soil Surveys -- Public Workshop Via MS Teams, July 14-15, 2021 DAY 1 AGENDA: WEDNESDAY, JULY 14, 2021 Time Topic Speaker 10:00 - 10:05 Welcome, Webinar Logistics Ken Hamburger, Trish Holahan, NRC 10:05 - 10:20 NRC Overview Presentation Tom Aird, NRC 10:20 - 11:20 Overview of Guidance on Surveys Carl Gogolak, SC&A, Inc.

for Subsurface Radiological Contaminants + Q&A 11:20 - 12:00 NEI Presentation + Q&A Bruce Montgomery, Nuclear Energy Institute (NEI) 12:00 - 13:00 1-hour break Workshop Topic: Geospatial and Statistical Methods 13:00 - 13:30 EPRI Presentation: Experiences with Richard Reid, Electric Power Research Geospatial and Statistical Based Institute (EPRI)

Surveys of Subsurface Soil 13:30 - 14:00 VSP Geospatial Statistical Methods Debbie Fagan, Pacific Northwest National to Support Decommissioning Laboratory (PNNL) 14:00 - 14:10 10-minute break 14:10 - 15:50 Open Discussion on the evaluation of sites with geospatial and statistical methods:

-Applicability of MARSSIM statistical tests and other methods

-Treatment of uncertainty and data sufficiency.

-Methods to determine the sample density, spatial distributions, depths, and volume to achieve a level of confidence and limit decision errors 15:50 - 16:00 Daily Wrap-up 1

DAY 2 AGENDA: THURSDAY, JULY 15, 2021 Time Topic Speaker 10:00 Day 2 Welcome NRC staff 10:00 - 10:30 Presentation: MARSSIM subsurface background Kathryn Snead, EPA Presentation: A Graded Approach to Subsurface Matt Darois, RSCS Characterization and Remediation and Related Tools and Methods 10:30 - 11:15 Discussion Topic: Subsurface DCGLs Short Presentations:

Development of Derived Concentration Guideline Levels Cynthia Barr, (DCGLs or clean-up levels) for Subsurface Residual NRC/NMSS Radioactivity Subsurface DCGL: Effects of Thickness, Area, and Charley Yu, Argonne Cover National Laboratory

--specific discussion on this topic--

11:15 - 12:30 Discussion Topic: Subsurface Hot Spots Short Presentations:

Elevated Areas or Hot Spots in the Subsurface Cynthia Barr, NRC/NMSS Subsurface Hot Spots Carl Gogolak, SC&A

--specific discussion on this topic--

12:30 - 13:30 1-hour Break 13:30 - 15:00 Discussion Topic:

Surveys of subsurface, including surveys of excavations, backfill materials, suspect areas, and hard-to-access areas Short Presentations:

Survey Issues with Excavations from Recent Bruce Watson, Decommissionings NRC/NMSS Low Level Radioactive Objects at a Former Department Matthew Wright, of Defense Facility California Department of Public Health Surveys of Survey Units with Low-Levels of Claude Wiblin, SC&A Radioactivity

--specific discussion on this topic--

15:00 - 15:15 15-minute Break 15:15 - 16:00 Discussion Topic: Surveys of subsurface, including surveys of excavations, backfill materials, suspect areas, and hard-to-access areas 2

Specific Discussion on subsurface survey topics including but not limited to:

-Dose calculations for backfill materials

-Applicability of Scenario B for subsurface residual radioactivity

-Methods to survey large subsurface soil excavations 16:00 Workshop Wrap-up NRC Staff 3