ML20234D042
| ML20234D042 | |
| Person / Time | |
|---|---|
| Issue date: | 11/16/1987 |
| From: | Grace S, Hawkins E NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV) |
| To: | NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV) |
| Shared Package | |
| ML20234D012 | List: |
| References | |
| REF-WM-48 NUDOCS 8801060421 | |
| Download: ML20234D042 (2) | |
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DISTRIBUTION Docket File Wm-48 PDR/DCS WM-48/SRG/87/11/12/0 DBangart, RIV SGrace T01sen TJohnson, LLTB PBarcia NOV I 61987
'LLW Branch, WMLU URF0 r/f URF0:SRG.
Docket No. WM-48 040WM048850E MEMORANDUM FOR:
Docket File No. WM-48 FROM:
Scott R. Grace, Project Manager Licensing Branch 1 l
Uranium Recovery Field Office, Region IV 1
SUBJECT:
FINAL TECHNICAL EVALUATION REPORT FOR THE PROPOSED REMEDIAL ACTION AT THE DURANG0 TAILINGS SITE, DURANGO, COLORADO The attached final Technical Evaluation Report (TER) discusses the remedial action proposed by the U.S. Department of Energy.(D0E).
The remedial action proposed by the DOE consists of relocation of an l
estimated 2.4 million cubic yards of tailings and 96.7 thcusand cubic yards of off pile material to the Bodo tanyon site, 2 miles to the southwest.
Staff review of the proposed remedial action indicates that the proposed actions meet the U.S. Environmental Protection Agency (EPA) criteria with regard to flood design measures and erosion protection, and geotechnical stability.
However, before the NRC can concur on the radon barrier design, several parameters for tailings and subpile materials ~
must be measured or estimated by the DOE.
These include:
radium-226 concentration, radon-222 emanating fractions, diffusion coefficient, dry unit density, porosity, particle size distribution, a review of swell and 1
dispersivity test results for the radon barrier soils, as well as re evaluation of the radon barrier cover design using these parameters.
Additionally, the staff conclude that the human health and environmental impacts of. ground-water contamination at the processing site cannot be evaluated until the rate, direction and areal extent of contaminated ground-water flow in the deeper aquifers and fault zone is adequately characterized.
Furthermore, since the EPA's ground water standards have 8801060421 871127 0FC :
- PDR, NAME :
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DATE :87/11/12-u
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