Baseline risk assessment of ground water contamination at the Uranium Mill Tailings Site near Grand Junction, Colorado
This Baseline Risk Assessment of Ground Water Contamination at the Uranium Mill Tailings Site Near Grand Junction, Colorado evaluates potential impacts to public health or the environment resulting from ground water contamination at the former uranium mill processing site. The tailings and other contaminated material at this site were placed in an off-site disposal cell by the US Department of Energy`s (DOE) Uranium Mill Tailings Remedial Action (UMTRA) Project. The remedial activities at the site were conducted from 1989 to 1993. Currently, the UMTRA Project is evaluating ground water contamination. This risk assessment is the first document specific to this site for the Ground Water Project. This risk assessment evaluates the most contaminated ground water that flows beneath the processing site toward the Colorado River. The monitor wells that have consistently shown the highest concentrations of most contaminants are used to assess risk. This risk assessment will be used in conjunction with additional activities and documents to determine what remedial action may be needed for contaminated ground water at the site. This risk assessment follows an approach outlined by the EPA. the first step is to evaluate ground water data collected from monitor wells at the site. Evaluation of these data showed that the contaminants of potential concern in the ground water are arsenic, cadmium, cobalt, fluoride, iron, manganese, molybdenum, nickel, sulfate, uranium, vanadium, zinc, and radium-226. The next step in the risk assessment is to estimate how much of these contaminants people would be exposed to if they drank from a well installed in the contaminated ground water at the former processing site.
- Research Organization:
- Jacobs Engineering Group, Inc., Albuquerque, NM (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC04-91AL62350
- OSTI ID:
- 10180490
- Report Number(s):
- DOE/AL/62350--104; ON: DE94018484; BR: EW2010102/EX2040010
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS
54 ENVIRONMENTAL SCIENCES
540220
540230
ABANDONED SITES
ARSENIC
CADMIUM
CHEMICALS MONITORING AND TRANSPORT
COBALT
COLORADO
CONTAMINATION
FEED MATERIALS PLANTS
FLUORIDES
GROUND WATER
HEALTH AND SAFETY
IRON
MANGANESE
MILL TAILINGS
MOLYBDENUM
NICKEL
NUMERICAL DATA
RADIOACTIVE MATERIALS MONITORING AND TRANSPORT
RADIOACTIVE WASTE DISPOSAL
RADIUM 226
REGULATIONS
REMEDIAL ACTION
RISK ASSESSMENT
SULFATES
URANIUM
US EPA
VANADIUM
ZINC