ML20245K948
| ML20245K948 | |
| Person / Time | |
|---|---|
| Issue date: | 06/14/1989 |
| From: | Heyer R, Rich Smith NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV) |
| To: | NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV) |
| References | |
| REF-WM-39 NUDOCS 8907050321 | |
| Download: ML20245K948 (3) | |
Text
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E REGION IV URANIUM RECOVERY FIELD OFFICE DENVER.
L DO 80225 JUN 14 1989 URF0:RSH Docket No. 40-WM039 040WM039340E MFMORANDUM FOR:
Docket File No. 40-WM039 FROM:
Ralph S. Heyer, Project Manager Uranium Recovery Field Office, Region IV
SUBJECT:
REVIEW OF JUSTIFICATION-FOR APPLICATION OF SUPPLEMENTAL STANDARDS AT VICINITY PROPERTY RT-018 (BONNEVILLE-TRANSL0ADERS)
Background
By submittal dated May 15, 1989, the Department of Energy (DOE) provided a final Radiological and Engineering Assessment (REA) which requested the application of supplemental standards on the contaminated area (s) for vicinity property RT-018.
Discussion This REA is for an application for supplemental standards in a railroad right-of-way owned by Bonneville Transloaders.
Remedial action would entail removing the tracks, excavating the material and replacing the tracks. The-estimated volume of material that would be removed is approximately 7600 yd3 The DOE stated that the contaminated material that would be left in place (approximately 510 yd3) would not pose a clear present or future _ hazard. 'The cost of decontamination was estimated at_$174,400 and would be high relative to.
long-term health benefits.
Radiological Data The area background is 13 pR/hr.
The highest gamma reading was reported at-74 pR/hr. The exposure rate range at ground level, over'the contaminated area, was reported between 15 to 74 pR/hr.
The Ra-226 concentration'in the soil, in contaminated areas, ranged from <1.3 to 54.9 pCi/gm.
The average Ra-226 concentration in the soil, in the contaminated area was 21 pCi/gm.
OfoX 8907050321 090614 PDR WASTE PNV WM-39
2' JUN 14 1989 The REA stated that the contaminated material was found alongside of and under the railroad tracks at a depth of 6 to 18 inches.
The area extends along approximately 1,140 feet of the tracks.
Due to the cost involved in cleaning up the material under the tracks, coupled with the low health hazard, DOE recommended that the contaminated material in the ballast and under the tracks be left in place.
Health Risk Analysis A limited analysis of health risks was presented in the REA.
Based on the radiological data and potential exposure to an individual member of the general public DOE determined that a person spending eight hours a day, five days a week for 50 weeks in a 74 pR/hr field the exposure to that individual would be approximately 148 mrem / year.
This is about one-third the amount allowed the general public (10 CFR 20.105).
Conclusion The DOE concluded that based on the examination of the potential exposure to an individual, there does not appear to be any significant health risks should the application be approved.
There is no change in land use expected within the foreseeable future.
Based on the above and the review of the subject REA and associated correspondence, Criterion "c" of 40 CFR 192.21 and the NRC's " Guidelines for Justifying the Use of Supplemental Standards," in 40 CFR Part 192, dated July 3, 1986, DOE satisfied the criteria deemed necessary to apply supplemental standards.
It is recommended that concurrence be granted for the application of supplemental standards at the property designed as RT-018 (Bonneville Transloaders).
f Ralph. Heyer, Pr jec Manager Urani m Recovery ield Office Region IV Approved By:
(4u R. Dale Smith, Director Uranium Recovery Field Office Region IV Case Closed:
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