Urandium mill tailings remedial action program. Radiological survey of Shiprock vicinity property SH06, Shiprock, New Mexico, August-November 1982
The radiological assessment conducted at the Shiprock vicinity property SH06 by the ANL Radiological Survey Group indicated background levels of radioactivity within the residential structure. Radiation exposure rates were less than the 20 ..mu..R/h above background limit specified in the EPA Standard (40 CFR 192.12(b)(2)). Short-term radon daughter measurements did not exceed the 0.02 WL (or 20 mWL) limit for average annual concentration including background as specified in the EPA Standard (40 CFR 192.12(b)(1)). The assessment indicated elevated levels of radioactivity at several areas in the outside environs. General areas of elevated radioactivity were found over almost the entire frontyard, encompassing about 1300 ft/sup 2/ (120 m/sup 2/), and at the west side of the residence, encompassing about 460 ft/sup 2/ (43 m/sup 2/). Radiochemical analysis of the soil sample collected from the frontyard near the residence indicated a radium concentration of 24 +- 2 pCi/g, which is in excess of the limit of 5 pCi/g above background, averaged over the first 15 cm of soil below the surface, as specified in Section 192.12(a)(1) of the EPA Standard. Elevated levels were also found at a 37-ft/sup 2/ (3.4-m/sup 2/) strip of land along the east property line, and in the backyard, at a small shack encompassing about 21 ft/sup 2/ (2.0 m/sup 2/) of land. From soil sample analyses and the history of the site, the contaminating material appears to be residual radioactive material under the provisions of the Uranium Mill Tailings Radiation Control Act of 1978 in the form of radium-enhanced material (i.e., tailings). Since the surface soil contamination levels exceed the limits specified in the EPA Standard, remedial action for this vicinity site should be considered. 9 references, 4 figures, 5 tables.
- Research Organization:
- Argonne National Lab., IL (USA)
- DOE Contract Number:
- W-31-109-ENG-38
- OSTI ID:
- 6664637
- Report Number(s):
- DOE/NE-SH06; ANL-OHS/HP-84-SH06; ON: DE84016023
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS
ABANDONED SITES
RADIATION MONITORING
RADIOMETRIC SURVEYS
FEED MATERIALS PLANTS
RADIUM
RADIOECOLOGICAL CONCENTRATION
SOILS
RADIOACTIVITY
CONTAMINATION
DAUGHTER PRODUCTS
EXPERIMENTAL DATA
MILL TAILINGS
NEW MEXICO
RADON
STABILIZATION
WASTE DISPOSAL
ALKALINE EARTH METALS
DATA
ECOLOGICAL CONCENTRATION
ELEMENTS
FEDERAL REGION VI
FLUIDS
GASES
GEOPHYSICAL SURVEYS
INDUSTRIAL PLANTS
INFORMATION
ISOTOPES
MANAGEMENT
METALS
MONITORING
NONMETALS
NORTH AMERICA
NUCLEAR FACILITIES
NUMERICAL DATA
RARE GASES
SOLID WASTES
SURVEYS
TAILINGS
USA
WASTE MANAGEMENT
WASTES
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