ML20012E489
| ML20012E489 | |
| Person / Time | |
|---|---|
| Issue date: | 03/23/1990 |
| From: | Randy Hall, Konwinski G NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV) |
| To: | NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV) |
| References | |
| REF-WM-48 NUDOCS 9004050259 | |
| Download: ML20012E489 (2) | |
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UNitto staves j -D NUCLEAR REOULATORY COMMISSION '
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n 231990 URF0:GRK -
Docket No. WM-48 1
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' MEMORANDUM FOR:
Docket File No. WM-48 j
i FROM:L Gary R. Konwinski Project Manager j
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SUBJECT:
MEETING MINUTES:
GROUND-WATER COMPLIANCE STRATEGY AT THE 4 '
DURANGO SITE
.A meeting was held lin Albuquerque,'New Mexico, on March 14 1990, with Jacobs Engineering Group, DOE's technical assistance contractor, to discuss the~
ground-water compliance strategy at the Durango site.
Compliance with the
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' ground water protection standards and potential travel of. water through the~
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. pile will rely.on the construction of the cap.
The cap will utilize a clay max layer, which has a laboratory hydraulic conductivity'of 10E-9 cm/sec.- - Due to this,. steady-state conditions will be developed about this flux value.
The clay max. layer and its ability.to limit water movement through'the tailings 1
.is very dependent upon the quality control associated with its installation.
i Currently, there are several.open issues, which have been forwarded to 00E by
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,perviou's correspondence, associated with the utilization of this material that DOE will;need to resolve prior to receiving NRC concurrence in;the cover design.
l It was agreed that this flux represented a reasonable value to base movement of
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moisture through the reclaimed tailings. The 10E-9 cc:/sec value will be utilized to determine the rate seepage could be delivered to the ground-water system.
The' ground-water flow path will then be modeled to determine water
.uality at.the point of compliance wells.
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Gary. Konwinski O
Project Manager Approved by:
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. Director
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