Excess Bismuth 214 Polygons for an Aerial Radiological Survey of Abandoned Uranium Mines, Navajo Nation, 1994-1999, USEPA and USDOE

This polygon shapefile presents ranges of ground surface exposure rate from excess Bismuth 214 in counts per second based upon the 1764keV photopeak. Excess Bismuth 214 is based upon measured minus expected Bismuth 214 times a per flight determined constant equal to a ratio of statistically most likely values. Forty one (41) aerial radiological surveys of potential uranium mining areas (1,144 square miles) were conducted within the Navajo Nation during the period from October 1994 through October 1999. The US Environmental Protection Agency (USEPA) Region 9 funded the surveys and the US Department of Energy (USDOE) Remote Sensing Laboratory (RSL) in Las Vegas, Nevada conducted the aerial surveys. The aerial survey data were used to characterize the overall radioactivity (ground surface exposure rate) and excess Bismuth 214 levels within the surveyed areas.


CKAN dataset id 7851ad2a-8afa-403c-97b4-bec0717f0bda
상태 active
url https://catalog.data.gov/dataset/excess-bismuth-214-polygons-for-an-aerial-radiological-survey-of-abandoned-uranium-mines-navajo3
버전 2024-02-02
라이선스 cc-zero
access_constraints ["https://edg.epa.gov/EPA_Data_License.html"]
bbox-east-long -108.972132
bbox-north-lat 37.160006
bbox-south-lat 35.007696
bbox-west-long -111.780543
contact-email henley.cheryl@epa.gov
coupled-resource []
dataset-reference-date []
frequency-of-update notPlanned
guid 7B12542539-8184-4B0E-BAD5-3D74038398E8
harvest_object_id 09fcb720-337c-4cd3-836e-a53e6c17a2d2
harvest_source_id 9b3cd81e-5515-4bb7-ad3c-5ae44de9b4bd
harvest_source_title Environmental Dataset Gateway ISO Geospatial Metadata
licence ["1144 square miles of the more than 25,000 square mile Navajo Nation were surveyed. This area does not include all areas that may have had uranium mining. Specifically, these surveys do not include the Grants Uranium District that is partially on the Eastern Agency of the Navajo Nation. Use of this data generally requires computer workstations with ESRI's Arc/Info (8.x or above), ArcGIS (8.x or above), or ArcView (3.x), or some other GIS or CAD software that is capable of reading or converting this dataset. The data are provided \"as-is,\" without warranty of any kind, either express or implied. These data have been compiled as part of a desktop project to collect existing spatial data to support the study of Navajo abandoned uranium mines. No field verifications were undertaken as part of this desktop study."]
metadata-date 2017-09-25
metadata-language eng
metadata_type geospatial
old-spatial {"type": "Polygon", "coordinates": [[[-111.780543, 35.007696], [-108.972132, 35.007696], [-108.972132, 37.160006], [-111.780543, 37.160006], [-111.780543, 35.007696]]]}
progress completed
resource-type dataset
responsible-party [{"name": "U.S. Environmental Protection Agency, Region 9", "roles": ["publisher"]}]
spatial {"type": "Polygon", "coordinates": [[[-111.780543, 35.007696], [-108.972132, 35.007696], [-108.972132, 37.160006], [-111.780543, 37.160006], [-111.780543, 35.007696]]]}
spatial_harvester true
제공 기관 U.S. Environmental Protection Agency
최초 수집 일시 2024-02-20T23:31:19…
최근 수집 일시 2024-02-20T23:31:19…

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