ML20196B462
| ML20196B462 | |
| Person / Time | |
|---|---|
| Issue date: | 01/27/1988 |
| From: | Starmer R NRC OFFICE OF NUCLEAR MATERIAL SAFETY & SAFEGUARDS (NMSS) |
| To: | Fliegel M NRC OFFICE OF NUCLEAR MATERIAL SAFETY & SAFEGUARDS (NMSS) |
| References | |
| REF-WM-65 NUDOCS 8802110287 | |
| Download: ML20196B462 (2) | |
Text
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-MEMORANDUM FOR: Myron Fliegel Section Leader Operations Branch' Division of low-level Waste Management and Decommissioning. HMSS FROM:
R. John Starmer Section Leader Technical Branch Division of Low-level Waste Management and Decoenissioning, NMSS
SUBJECT:
ACCEPTANCE REVIEW COM4ENTS ON FALLS CITY TEXAS DRAP In accordance with your recent request, we have perfomed an acceptance review of the subject document. We conclude that there are deficiencies in the areas of geology, surface water hydrology, and groundwater hydrology.- We note that a topographic map has not been provided, surface water hydrologic calculations have not been provided, and two ground water references were not included. Finally, this DRAP does not include an analysis of gv andwater
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impacts. Absent that analysis, we will not be able to evaluate the remedial action plan with regard to meeting the EPA groundveter standards.
Deicircl 316ned W R. John Stamer, Section Leader Techrical Branch Division of Low-level Waste Management and Deconnissioning, NMSS
Enclosure:
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DATE801g/88
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F FALLS CITY ACCEPTANCE REVIEW 1.
GEOLOGY Our review has resulted in the identification of two shortcomings in the subject document:
A.
Cross-sections through the various tailings piles are presented on pages 45-53. Abbreviations are used to identify soil units but the abbreviations are not keyed to an index of their meanings. Therefore, the cross-sections are incomplete and do nut accurately portray subsurface conditions of the site.
B.'
The dRAP does not' include any detailed topographic map or aerial photograph of the tailings piles and environs. Therefore, topographic profiles, geological cross-sections, and discussions of surficial features and geomorphic hazards cannot be independently verified by the staff.
2.
SURFACE WATER HYDROLOGY-We note from our examination of the submitted documents that no hydraulic engineering calculations were provided to substantiate the selected erosion protection design. These calculations are needed for NRC staff review in order to verify that acceptable methods and assumptions were used in the design of the riprap layer, particularly the rock aprons and rock toes, t
Accordingly, please provide the hydraulic calculations which were used to detemine the erosion protection requirements.
3.
GROUNDWATER HYDROLOGY I
We have reviewed the Falls City dRAP/EA to determine whether critical information is missing. This initial review indicates that a detailed review will not ' e possible and that two additional items should be sent to us for o
evaluation.
A.
Pyrih & Assoc.,1986, "Geochemical Properties of Soil & Sediment Samples for Uranium Tailings Disposal Site at Falls City Texas, Contract iASD-34-6703-S-86-0018".
B.
Slug and Pump test field data used to determine permeability of this.
Additionally, the dRAP/EA provides no evaluation or prediction of potential future water quality utilizing the preferred disposal option. NRC staff cannot evaluate the remedial action, in terms of reeting the standards, because DOE's analyses are absent.
,