ML20128E921
| ML20128E921 | |
| Person / Time | |
|---|---|
| Issue date: | 06/10/1985 |
| From: | Weber M NRC |
| To: | |
| References | |
| REF-WM-64 NUDOCS 8507080047 | |
| Download: ML20128E921 (2) | |
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TIME DATE CONVERSATION RECORD 1:00 pm 85/06/10 TYPE ROUTING O VISIT O CONFERENCE y TELEPHONE g N AM E/ SYMBOL INT Location of Visit / Conference: Silver Spring, MD to Denver, CO @ OUTGOING -
NAME or PERSON (S) CONTACTED oR IN CONTACT ORGANIZATION (Office, dept., bureau. TELEPHONE NCF.
WITH Vou etc.)
Paul Hildenbrandt NRC-URF0 PTS 776-2812 g SUBJECT URFO'S GROUNDWATER COMMENTS ON THE LAKEVIEW DEA /DRAP 4, .A, SW- tM-(s4-
SUMMARY
Following my review of URFO's comments on the Lakeview DEA /DRAP, I called Paul to inqu;.re about the technical basis for several comments about the incorrect _ ,
selection of aquifer analysis methods at the site. Paul explained that the comments were based on URFO's evaluation of the lithologies beneath the site and general geology of the area. I asked Paul if URF0 had requested and reviewed any of the aquifer t- data (e.g., drawdowns vs. time). He responded that he only reviewed the s ;y explanations in the Lakeview documents: DEA, DRAP, and PSCR.
The conclusion that the shallow aquifer beneath the site is not confined was based y Q- on the absence of a continuous aquitard above the aquifer, contrary to assumptions O
g made in the documents. He indicated that his principal concern was about DOE's bW averaging of aquifer properties determined assuming both confined and unconfined 3 I agreed that such averaging would not be appropriate. Paul also g__ conditions. _ __ _ ___- .. . _ _ _ _ _
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_. mentioned that URF0 did not review the water quality / geochemistry information in much detail because only one sample was available from each sampling point.
Thus, the sampling program was insufficient to characterize temporal and spatial ACTION REQUIRED Discuss with G. Gnugnoli, WMLU and determine appropriate action for preparing comments to DOE on the Lakeview DEA /DRAP.
NAME OF PERSON DOCUMENTING CONVERSATION SIGNATURF DATE Michael F. Weber
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( June 10, 1985 ACTION TAKEN YO[NOCCTd file @1 Project __69 Same as above; prepared note to G. Gnugnoli describing _my--concerns alO56*t:lth -. -
groundwater comments. P D 3 X._ ..
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TITLE .
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Hydrogeologist Th _ June'16[1985-w271-iot CONVERSATION RECORD "
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-,_-C.~ g TELECON WITH PAUL HILDENBRANIYf, URFO, FROM MICHAEL WEBER - JUNE 10, 1985 - PAGE 2 variability in water quality in the shallow system. I pointed out that although the sampling may not be adequate to characterize temporal variability, it still may provide an approximate representation of the distribution of contaminants /
constituents in the groundwater system. I also mentioned that it appeared that
' DOE was developing the types of analyses (e.g., Piper Hydrochemical Facies diagrams) requested by NRC for earlier. analyses.
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