ML20196B672
| ML20196B672 | |
| Person / Time | |
|---|---|
| Issue date: | 01/30/1988 |
| From: | Lohaus P NRC OFFICE OF NUCLEAR MATERIAL SAFETY & SAFEGUARDS (NMSS) |
| To: | Arthur W ENERGY, DEPT. OF |
| References | |
| REF-WM-68 NUDOCS 8802120072 | |
| Download: ML20196B672 (2) | |
Text
.,'t-
- N 3 0 ggg t
WM68/SB/1/20 WM Record File WM Project Docket flo.
W. John Arthur, Acting Project Manager PDR V Uranium Mill Tailings Project Office LPDR U.S. Department of Energy DisbibuUen-Albuquerque Operations Office P.O. Box 5400 Albuquerque, NM 87115
( tura to WM,623 SS),
Dear Mr. Arthur:
Enclosed are NRC Staff coments on the Final Design for the Green River, Utah uranium mill tailings site. The Staff developed these coments based on an expedited review in an effort to respond to DOE's request. In addition, this review was conducted prior to receipt of the prelininary Final RAP which must be reviewed in concert with the preliminary Final Design before we address the question of NRC concurrence. Thus, while these coments represent the Staff's concerns to date, DOE should be aware that other problems may be identified through review of the RAP and Design package which is scheduled for our review beginning in late February.
The enclosed coments are presented in three sections; Background Information Needs to Support the NRC Staff Review, Overall Coments, and Specific Coments.
The Overall Coments were sumarized for W in a conference call January 7, 1988 coordinated by S. Bilhorn (NRC) and R. Richey of your staff. These address the following concerns:
o The quality of rock to be used for riprap; o
The influence the proposed increase in bedding thickness may have on infiltration; The potential for increased infiltration due to piping of cover o
material through the riprap causing subsidence and ponding, or blockage of rock fractures relied on for drainage.
The potential for increased infiltration from water localized at the o
riprap toes due to the below grade design.
o The lack of an integrated analysis of overall performance of the proposed disposal unit, considering leachate production from all sources of infiltration, that adequately assesses potential impacts of the disposal unit on ground water.
Inadequate justification for sole reliance on redox conditions of the o
Cedar Mountain Fonnation for attenuation.
In general, the Staff concludes that DOE has not provided sufficient infonnation, including analysis and supporting data, to be able to detennine that the proposed design will be adequate to meet the EPA standards. NRC Staff dces not encourage DOE to proceed with steps to implement the currently 8802120072 880130 PDR WASTE WM-68 PDR
s
.(
c',L t
WM68/SB/1/20
-2 proposed design until review of the final RAP and Design package has been completed and Staff concerns have been adequately resolved.
NRC Staff is willing to meet for discussion of the enclosed coments at the request of D0E. Such a meeting could be best accomodated at our offices or via telephone conference. Giorgio Gnugnoli (FTS 492-0578) is available to assist in answering any questions regarding this review.
1 Paul H. Lohaus, Chief Operations Branch Division of Low-Level Waste Management and Decomissioning
Enclosures:
As stated cc:
R. Richey, DOE /AL DIJTRIBUTION:
A lWM sf WM-68 NMSS rf LLOB rf SBilhorn, LLOB MFliegel, LLOB PLohaus, LLOB JSurmeier, LLTB MKearney, LLRB JGreeves, LLWM MKnapp, LLWM GGnugnoli, LLOB DGillen, LLOB RDSmith, URF0 EHawkins, URF0 IK Y niA I.
.....I..
....[..
..............................I.
NAME:SBilh 8
- MFliegel
- PLohaus BATE $3h/bb
[f b
[fhbb 0FFICIAL RECORD COPY
,