ML20126A423
| ML20126A423 | |
| Person / Time | |
|---|---|
| Issue date: | 12/02/1992 |
| From: | Randy Hall NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV) |
| To: | Chernoff A ENERGY, DEPT. OF |
| References | |
| REF-WM-39 NUDOCS 9212210047 | |
| Download: ML20126A423 (4) | |
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UNITED STATES p
NUCLEAR REGULATORY COMMISSION 5
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,o URANileM RECOV FIELD OFFICE DENVER, COLORADO 802:s DEC 0 21992 Docket No. 40-WM039 Albert R. Chernoff, Project Manager Uranium Mill Tailings Project Office U.S. Department of Energy Albuquerque Operations Office Post Office Box 5400 Albuquerque, New Mexico 87115
Dear Mr. Chernoff:
This letter is in response to your letter dated October 9, 1992, requesting NRC certification concurrence on the completion report for Vicinity Property No. LO-023S; South Fork Summer Home Sites, Lot No. 7, located in Lowman, Idaho. Additional information is reqwired in order to review this completion report, and we are therefore unable to provide NRC certification ccncurrence at this time.
The completion report included two areas in which it was proposed to allow residual radioactive material to remain in place with the application of supplemental standards.
The completion report states that the maximum gamma exposure rate is 19.5 microR/ hour. No exterior gamma survey information was included in the completion report, and we are unable to verify the maximum exposure rate or determine where the maximum reading was obtained. Some. field sketches were included, but they provided no useful information. The results of an exterior gamma survey must be included in order to verify-the residual radiation levels.
One of the areas proposed for the application of supplemental standards is beneath a rock retaining wall along the river's edge. The justification for applying supplemental standards is that the cost of demolition, removal, and rebuilding this wall is excessive when compared to the long-term benefits.
No cost estimate or supporting data was included in the completion report. We are therefore unable to assess the application of supplemental standards for the material under the rock retaining wall.
The completion report included data on surveys performed within habitable structures on the property. Elevated gamma levels'of 49 microR/ hour for the north wall of the shed and 62 microR/ hour for the center of room 1 in the garage were recorded. These levels exceed the standards of 40 CFR 192.12(b)(2). Also, the data on radon daughter concentration measurements in Table 3.3 indicates values greater than the 0.1 working level requirement of Appendix E.4 of the VPMIM.
Subsequent data was provided for the garage with the cover letter transmitting the completion report, but no additional data-was provided _for the house. No radon daughter concentration measuremegts were 9212210047 921202
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DEc 0 21992 U. S. Department of Energy l apparently taken in the shed. -These discrepancies in the interior gamma levels and radon daughter concentrations indicate the requirements of 40 CFR 192.12(b) have not been met for this property.
Additional information is therefore required before the NRC is able to assers the certification of this property.
Should you have any questions, please contact paul Michaud at (303) 231-5809.
Sincerely, y-.
Ramon E. llall Director
Attachment:
NRC Review Form P
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UMT/ MIS /1092-145 VP No.: LO-023S NRC Review Form for Supplemental Standards Co.tification of Vicinity Proportlos The Department of Energy (DOE) has determined that the remedial action at the following vicinity property (VP) has been completed and thereby complies with supplemental standardt invoked by DOE under 40 CFR, Subpart C, specifically Subsections 192.21 and 192.22.
[ ] NRC concurrence for the Radiological Engineering Assessment (REA) given on:
pd Supplemental standards were not in the REA, special circumstancos required that supplemental standards bo involved during remedial action.
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88-d6 - 9.A Gaeton Falance, DOE Certification Officer Dato
======================================
Dased on the information and certification provided by the DOE, the NRC:
[ ] concurs that the remedial action at the subject VP has boon completed under its authority provided by the Uranium Mill Tallings Radiation Control Act (UMTRCA),
Section 104(f)(1) and as described in the Memorandum of Understanding (MOU),
Appendix A, Section 3.4.
[ ] concurs, as above, except for the following conditions:
1.
2.
3.
[ ] See attached shoots for any additional provisions.
% noods additional information to make a concurrenco decision. This information consists of:
1.
Exterior gamma survey results and maps.
2.
A cost estimate for remediation of contaminated material under the rock retaining wali.
3.
Interior gamma and radon daughter concentration measurements which show the EPA standards have been met.
[ ] Ses attached sheets for any additional informational noods.
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f, NAC Concurring Official and Title Dato
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U. S. Department of Energy DEC 0 21992 bcc:
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