ML20127M572
| ML20127M572 | |
| Person / Time | |
|---|---|
| Issue date: | 01/08/1993 |
| From: | Michaud P NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV) |
| To: | NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV) |
| References | |
| REF-WM-39 NUDOCS 9301280236 | |
| Download: ML20127M572 (3) | |
Text
e-p ase UNITED STATES
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NUCLEAR REGULATORY COMMISSION
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- UnANIUM RECOVERY FILLD OFFICE DENVEH. OL DO 10225 JAN O 81993 URf0:PWM Docket No. 40-WM039 040WM039770E MEMORANDUM 10: Docket File No. 40-WM039 FROM:
Paul W. Michaud, Project Manager
SUBJECT:
COMPLETION REPORT FOR VICINITY PROPERTY NO. LO-0145 00E requested NRC concurrence on the completion report for vicinity property No. LO-014S in a letter dated November 12, 1992. The property is a pasture located in Lowman, Idaho.
Remedial action was to have removed all residual radioactive material from this property, four areas of the property have large trees which are rooted in contaminated material, and the owner did not want the trees removed.
Remedial action was performed up to the root systems of the trees.
Supplemental standards were applied in the field, leaving approximately 30 cubic yards of residual radioactive material in place. Both the property owner and the Idaho Department of Health and Welfare concurred in the remedial actions and the application of supplemental standards.
Radium-226 concentrations in the areasi where supplemental standards were applied are 18,6 to 28.2 pCi/g.
6 inches of clean fill. The highest The areas were covered with a minimum of -
exterior gamma reading in the area where supplemental standards were applied was 15.8 microR per hour. Background levels in the area are 15 microR per hour. A person spending 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> a day for 50 weeks a year in a 15.8 microR per hour radiation field would receive 133 millirem, which is less than 27 percent of the allowable dose for unrestricted arcas in 10 CFR 20.105. Due to the location of the residual radioactive material, it is unlikely that an individual will spend any significant amount of time in the area of maximum exposure.
The completion report included the results of surveys and soil samples performed on the property.
all areas meet the applicable EPA standards.With the_ application of supplemental standards The levels of contamination, the location of the contaminated material, and the fact that the land use is not likely to change, results in a low public health hazard. The harm to the environment which would result if complete remediation were performed is clearly achieved.
excessive when compared to the health benefits which would be '
The criteria of 40 CFR 192.21(b) are therefore met, and the 930t200236 930108 L
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JAN0bft' application of supplemental standards is appropriate. Remedial actions performed were reasonable under the circumstances, and the criteria of 40 CFR 192.22(a) are also satisfied. The staff therefore recommends providing NRC concurrence on the certification of Vicinity Property No. LO-014S.
Y 4 Paul W. Michaud Case Closed: 040WM039770E
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