ML20062A577
| ML20062A577 | |
| Person / Time | |
|---|---|
| Issue date: | 07/06/1982 |
| From: | Siefken D, Starmer R NRC OFFICE OF NUCLEAR MATERIAL SAFETY & SAFEGUARDS (NMSS) |
| To: | Hawkins E NRC OFFICE OF NUCLEAR MATERIAL SAFETY & SAFEGUARDS (NMSS) |
| References | |
| REF-WM-3 NUDOCS 8208040042 | |
| Download: ML20062A577 (2) | |
Text
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204.2.1/DLS/82/6/28/0 WMLL s/ b
@ @ 55 JBMartin (23-l REBrowning DLSiefken RJStarmer WMLL:
204.2.1 RDSmith MEMORANDUM FOR:
Edward F. Hawkins, Section Leader OO S Low-Level Waste Licensing Branch FROM:
David L. Siefken Low-Level Waste Licensing Branch R. John Starmer Low-Level Waste Licensing Branch
SUBJECT:
Notes of Special Session on the Role of the Unsaturated Zone in Disposal of Hazardous and Radioactive Waste, American Geophysical Union Spring Meeting, Philadelphia, PA DISCUSSION:
Papers presented during the special session are listed on pages 42 and 44 of the attached program. All papers will be printed as a volume and distributed through a publishing company this fall. As shown in the program, five papers in the special session were presented by NRC contractors. Our paper on the NRC-funded studies on the unsaturated zone preceeded the contractor's papers in order to provide insight into both our program and the relationship between the studies.
The paper by C. Hung, EPA, presented the model used to simulate infiltratiun in the PRESTO code. The EPA will publish the infiltration model this fall.
The paper by E. Lapalla was particularly interesting since it provided quantification of the effect of volatile organic solutes on the hydraulic conductivity of clay liners. During the discussion of this paper, recent studies by David Anderson at Texas A & M University were mentioned.
These studies consisted of exposing clay liners to volatile organic solutes, then excavating the liners to show the effects, such as severe cracking of the liners due apparently to volume changes or breakdown in the clay particles. One paper published by Anderson has been attached to these meeting notes; and additional as-yet unpublished information on this Texas A & M study is being sought.
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In addition to the special session, we were able to attend several technical meetings und poster sessions on Thursday. Based on these activities, several other papers deserving particlar mention include:
1.
Eduardo Figueroa of Vanderbilt University in Nashville, TN has put considerable work into designing ground-water monitoring networks using kriging techniques.
John Thomas of PNL has been informed of this and will integrate the Figueroa results into his work on B6671.
2.
W. C. Graustein presented a method of measuring retardation factors for certain elements using a single large volume sample of water from an aquifer. The method, utilizing relative concentrations of U and Th series nuclides, could be of use for uranium milling and mining site characterization.
Mr. Graustein was referred to George Birchard of RES and Fred Ross of WMUR.
_ _ _. Original Signed By David Siefken Low-Level Waste Licensing Branch OrigTnal ?!ced P/
R. John Starmer Low-Level Waste Licensing Branch Enclostre:
As stated WMLh'h_:____________:____________:____________::-_
0FC :,g NAME :
DLSiefken : RJStarmer :
DATE :82/06/28 db 3/[/82