ML19350C447
| ML19350C447 | |
| Person / Time | |
|---|---|
| Site: | Wood River Junction |
| Issue date: | 11/03/1980 |
| From: | Dan Warner DON L. WARNER, INC. |
| To: | Shum E NRC OFFICE OF NUCLEAR MATERIAL SAFETY & SAFEGUARDS (NMSS) |
| References | |
| CON-NRC-02-80-076, CON-NRC-2-80-76 17824, NUDOCS 8104010744 | |
| Download: ML19350C447 (1) | |
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Dear Dr. Shum:
X.f I am writing to respond to Task II-b, under iE contract 02-80-076, hich is:
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How quickly will the groundwater reservoir
-purge itself of radioactive and nitrate contamination."
It is not possible for me to respond quantitatively to this task at present, because of a lack of water-level and other data for the site. I expect to have the necessary data soon.
It is apparently contained in the report prepared for UNC by Goldberg. Zoino and Associates. This report is supposed to be sent to me shortly by UNC. hhen I have the data, I expect to be able to make some crude estimates of the time for aquifer cleanup by natural flow. An accurate estimate will require the tpe of effort being considered by the USGS.
I can, however, make some qualitative observations based upon my studies to date and upon comments made by UNC and Goldberg Zoino repre-sentatives at the October 28 meeting.
It does seem clear that there must have been a continuing source of groundwater contaminants during 1977-1979, because contaminant concentrations in wells T-2 and T-3 remained too high during that period without some such source. The rapid decline in con-taminant levels in well T-2 in late 1979 and in early 1980 appears to show
'that the source is now largely depleted. More recent data shows an even greater cleanup tendency according to UNC and its consultant. Based on this evidence it would seem that the aquifer is now discharging its load of contaminants and that little, if any, are being added. This should lead to a natural decline in contaminant levels to within the limits of the various applicable standards in a few years. This is, of course, if no fur *.her contaminants are added as a result of UNC's decommissioning work.
Sincerely yours, e
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Don L. Warner
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