ML20059B543

Discusses Workshop DOE Planning on Environ Transport Modeling Relative to Use of Computer Codes & Recommends That Workshop Be Coordinated W/Epa.Topics NRC Believe Would Be Most Useful in Support of NRC Respective Missions Listed

ML20059B543
Person / Time
Issue date:	10/18/1993
From:	Spiro H NRC OFFICE OF NUCLEAR MATERIAL SAFETY & SAFEGUARDS (NMSS)
To:	Beam P ENERGY, DEPT. OF
References
REF-WM-3 NUDOCS 9310280281
Download: ML20059B543 (4)

Text

P

[pa rtog o

UNITED STATES

• ,3

[

h NUCLEAR REGULATORY COMMISSION

.c 2

WASHINGTON, D. C. 20555 e

o s.... /

OCT1e 1993 e

Mr. Paul Beam U.S. Department of Energy EM 451 Trevion II Washington, DC 20585

Dear Paul:

The Nuclear Regulatory Commission (NRC) believes that the workshop you are planning for the Department of Energy (D0E) on environmental transport modeling will be a useful forum to address issues associated with the use of computer codes for such modeling.

We believe the workshop should also be coordinated with the Environmental Protection Agency (EPA), which is also actively engaged in transport modeling. Our agencies face similar technical questions and quandaries in the selection and application of computer codes for analysis of radioactively-contaminated sites.

We believe the workshop would be most useful to us in support of our respective missions if it consisted of facilitated technical discussions about:

strengths and weaknesses of using transport codes; e

comparison of computer codes and their performance on standard problems; e

appropriate methodologies for applying and " validating" the codes; and

+

+

assumptions, default parameters and exposure scenarios.

We had spoken earlier about the possibility of including NRC technical staff as participants in the workshop's panel discussions.

I have discussed that option with several people whose expertise I believe would be relevant to the overall theme of the workshop. As of the last time we spoke, DOE had not established the formal workshop agenda, or the specific topics of the panels.

Obviously, the topics will depend on the panelists' range of expertise.

The following NRC staff have tentatively agreed to consider participating in panel discussions at the workshop.

I list them with their phone numbers, organizational affiliation, expertise, and the topics they might be interested in addressing.

I suggest that you contact them directly to see if their specific interests and time availability mesh with the panel topics once they are developed.

NAME PHONE WRC AREA EXPERTISE TOPICS Boby Abu-Eld 504 3446 Decommissioning geochemistry, code def aults & scenarios, environmental transport verification / validation, user feedback, code maintenance Mark Thaggard 504-2568 Low level waste hydrogeology sensitivity, verification and validation Bob Meck 492-3737 Research health physics health physics Ralph Cadv 492 3843 Research hydrogeology hydrogeology I

Jack Farrott 504-2565 Deccnnissioning hydrogeology code classification and limitations, code maintenance

}

M@

gj0If).

9310280281 931018 PDR WASTE WM-3 PDR (Y

Mr. Paul Beam hw We also anticipate that may cf-cur deH-hem the Division of Low-Level Waste Management and Decommissioning, as well as from other divisions of NRC, will be interested in attending the workshop.

I look forward to hearing from you soon with further details on the workshop.

Sincerely, i

(Original ST,nd by

__)

Harvey Spiro Regulatory Issues Section i

Decommissioning and Regulatory Issues Branch Division of Low-Level Waste Management and Decommissioning Office of Nuclear Material Safety and Safeguards Distribution:

Central File.NMSS r/f LLWM r/f JGreeves PLohaus JAustin JHolonich MBell MWeber TJohnson LLDR r/f MThaggard RAbu-Eid JParrott RCady MSilberberg CDaily RMeck Yes / No Category:

Proprietary or CF Only PDR:

Yes-- -No ACNW:

I w vo v wa ap SUBJECT ABSTRACT: Potential panel participants for DOE workshop file path: s:\\llwmtype\\cecilia\\ panels.hs

• SEE PREVIOUS CONCURRENCE 0FC LLDR*

LLDR*

LLDR*

LLWhh LLWMO[ff NAME' HSpiro MWeber JAustin PLoda[s JGreb[s DATE 10/S/93 10/05/93 10/12/93 10/)T/93 10/[/93

.C = COVER E = COVER & ENCLOSURE N = NO COPY

y We also anticipate that many of our staff from the Division of Low-Level Waste Management and Decommissioning, as well 'as from other divisions of NRC, will be interested in attending the workshop.-

'I look forward to hearing from you soon with further details on the workshop.

Sincerely!

-i

/S Harvey Spiro Regulatory Issues Section Decommissioning and Regulatory Issues Branch Division of Low-level Waste Management and Decommissioning Office of Nuclear Material Safety and Safeguards Distribution:

Central File NMSS r/f LLWM r/f JGreeves PLohaus JAustin JHolonich MBell MWeber TJohnson LLDR r/f MThaggard RAbu-Eid JParrott RCady MSilberberg CDaily RMeck PDR: Yes / No Category:

Proprietary or CF Only ACNW: Yes / No 3 G.

Y-Mo- /

D eted e /

Scue -

SUBJECT ABSTRACT: Potential panel participants for DOE workshop File path: s:\\llwmtype\\cecilia\\ panels.hs O

LLDRM C.

LLWM LLWM OFC LLDR C-LLDR NAME HSpiro b MWeber k JAusbn PLohaus JGreeves DATE 10/5/93 10/[/93 N

10// zd93 10/ /93 10/ /93 C = COVER E = COVER & ENCLOSURE N = NO COPY j

OCT C6 '93 12u 3PM PISK 4 GL. 62 MITCH. 46152412593 P.2/2 WORKSHOP DOE EM PEIS Risk Aaaaamment Model Review November 30 - December 1,1993 Holiday Inri Crowrie Plaza, Rockves, MD Sponsored by the U.S. Department of Energy (DOE) Offlee of Environmental Restoration and Waste Management (EM) in conjunction with the EM Programmaic Erwironmorhal impact Staement (PElS)

The U.S. DOE Office of Environmantal Restoration and Weste Management is conducting a naional workshop for waluating and selecting computer models that will be used as part of the human health risk assessment methodology proposed for assessmg risks associated with remediation and waste management activities across the DOE complex. A primary e 6iectNo of the workshop is to gain consensus on contaminant fate and transport models that wW be used as part of the EM Programmatic Environmental impact Statement risk assessment methodology.

At the workshop, summaries of independent peer reviews and results of comparative analyses of the models will be presented and discussed. In addition the partmapants in the workshop will desenbe and evaluate the proposed PElS human health risk assessmert methodology; e

describe sweral multimedia environmortal contaminant tse and transport rnodels that e

are candicates for use in the PEls human healei risk assessment methodology, including the Multimedia Erwironmental Ponutant Assessment System (MEPAS), the HarWord Environmental Dose system Generation 11 (GENil), the Residual RadioactNo Material Code (RESRAD), and MMSoll.S; discuss results of comparatNe analyses of the candidate multimedia models; e

discuss results of independent peer reviews of each of the candkfate multimedia models:

e discuss implications of fate and transport modeAng assumptions on the human health risk a

assessment methodology, including uncertainties; discuss the recommended rnoddications of the human risk rM with an e

emphasis on the recommended modifications of the multimedia fate and transport inodels.

InvKod to anend are representatives of the Environmental Protection Agency, Nuclear Regulatory Commission, the States, unNor:# ties, environmental interest groups, and other affected or Irterested partes.

For more information contact Jill Morris of the Center for Risk Manegement, Oak Ridge National L.s.boisiory, at (615) 2412505 or Paul Beam of the DOE Office of Environmental Restoration and Waste Management, at (301) 903 8133.

coormn d ty in. c.ni., v., m u.n.e.m.ni, o.h a.oe. s.s.n.: tabor v. o.h nimes, TN

_