Hanford Site National Environmental Policy Act (NEPA) Characterization

Neitzel, D.A.; Antonio, Ernest J.; Fosmire, Christian J; Fowler, Richard A.; Glantz, Clifford S; Goodwin, Shannon M; Harvey, David; Hendrickson, P.L.; Horton, Duane G.; Poston, Ted M.; Rohay, Alan C.; Thorne, Paul D.; Wright, Mona K

doi:10.2172/15001075

Cited by 3 publications

(3 citation statements)

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“…Situated in the south‐central part of Washington State along the Columbia River, this site occupies 1,517 km 2 and is located adjacent to the city of Richland and near the cities of Pasco (25 km southeast) and Kennewick (25 km southeast, Mann et al., ; Neitzel et al., ; US Census Bureau, ). The proposed Immobilized Low‐Activity Waste Disposal facility site (also known as the Integrated Disposal Facility or IDF) is found within the 200 East Area.…”

Section: Site Comparison Datamentioning

confidence: 99%

Comparison of LLW Disposal Facilities at Major Department of Energy Sites

Rustick

Kosson²,

Krahn³

et al. 2015

Remediation Journal

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Near surface disposal facility design and management are examined and compared using a systems approach that defines facility performance as a function of three components (or subsystems): the disposal facility design (cover systems and bottom liners); the properties of the waste (waste composition, waste form and waste package); and the site-specific environmental features (climate, geology, and hydrology). We report an evaluation of five DOE near surface disposal facility case studies, selected to provide a "representative" sample that included disposal sites with a range of waste and environmental characteristics across the DOE. The facilities selected were the Savannah River E-Area Engineered Trenches, Hanford Integrated Disposal Facility, Idaho Radioactive Waste Management Complex, Oak Ridge Environmental Management Waste Management Facility, and Nevada National Security Site Area 5. c⃝ 2015 Wiley Periodicals, Inc.

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Section: Site Comparison Datamentioning

confidence: 99%

Comparison of LLW Disposal Facilities at Major Department of Energy Sites

Rustick

Kosson²,

Krahn³

et al. 2015

Remediation Journal

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“…In their Hanford Site characterization report to satisfy the requirements of the National Environmental Policy Act, Neitzel et al (1999) identified shrublands as the areally predominant vegetation community at the Hanford Site. This community, commonly called shrub-steppe, includes big sagebrush, three-tip sagebrush, bitterbrush, gray rabbitbrush, and spiny hopsage.…”

Section: Transpirationmentioning

confidence: 99%

UNSAT-H Version 3.0:Unsaturated Soil Water and Heat Flow Model: Theory, User Manual, and Examples

Fayer¹

2000

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The UNSAT-H model was developed at Pacific Northwest National Laboratory (PNNL) to assess the water dynamics of arid sites and, in particular, estimate recharge fluxes for scenarios pertinent to waste disposal facilities. During the last 4 years, the UNSAT-H model received support from the Immobilized Waste Program (IWP) of the Hanford Site's River Protection Project. This program is designing and assessing the performance of on-site disposal facilities to receive radioactive wastes that are currently stored in single-and double-shell tanks at the Hanford Site (LMHC 1999). The IWP is interested in estimates of recharge rates for current conditions and long-term scenarios involving the vadose zone disposal of tank wastes. Simulation modeling with UNSAT-H is one of the methods being used to provide those estimates (e.g., Rockhold et al. 1995;Fayer et al. 1999).To achieve the above goals for assessing water dynamics and estimating recharge rates, the UNSAT-H model addresses soil water infiltration, redistribution, evaporation, plant transpiration, deep drainage, and soil heat flow as one-dimensional processes. The UNSAT-H model simulates liquid water flow using Richards' equation (Richards 1931), water vapor diffusion using Fick's law, and sensible heat flow using the Fourier equation.This report documents UNSAT-H Version 3.0. The report includes the bases for the conceptual model and its numerical implementation, benchmark test cases, example simulations involving layered soils and plants, and the code manual. Version 3.0 is an enhanced-capability update of UNSAT-H Version 2.0 (Fayer and Jones 1990). New features include hysteresis, an iterative solution of head and temperature, an energy balance check, the modified Picard solution technique, additional hydraulic functions, multiple-year simulation capability, and general enhancements. This report includes eight example problems. The first four are verification tests of UNSAT-H capabilities, three of which are repeats of the tests used for previous versions of UNSAT-H. The first test examines the ability of UNSAT-H to simulate infiltration compared to separate analytical and numerical solutions. This test was repeated using the modified Picard solution technique. The second test examines the ability of UNSAT-H to simulate drainage compared to measurements and a numerical solution. The third test examines the ability of UNSAT-H to simulate heat conduction compared to an analytical solution. The fourth test is new for UNSAT-H and examines the ability of UNSAT-H to simulate hysteresis compared to measurements and a numerical solution. The results of all four tests showed that the tested processes were correctly implemented in UNSAT-H. The repeat of the first test with the modified Picard solution technique successfully demonstrated a 10 4 to 10 5 reduction in mass balance errors.The second four example problems are demonstrations of real-world situations. The first three are repeat problems from previous versions of UNSAT-H. The first demonstration involves a 1-year s...

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“…Non-native species taking advantage of the altered habitats include the domestic pigeon (Columba livia) and the house mouse (Mus musculus). Additional information on existing habitat and associated species can be found in Neitzel(1999).…”

Section: Site Descriptionsmentioning

confidence: 99%

Preoperational Environmental Survey for the Spent Nuclear Fuel (SNF) Project Facilities

Mitchell¹

2000

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Hanford Site National Environmental Policy Act (NEPA) Characterization

Cited by 3 publications

References 1 publication

Comparison of LLW Disposal Facilities at Major Department of Energy Sites

Comparison of LLW Disposal Facilities at Major Department of Energy Sites

UNSAT-H Version 3.0:Unsaturated Soil Water and Heat Flow Model: Theory, User Manual, and Examples

Preoperational Environmental Survey for the Spent Nuclear Fuel (SNF) Project Facilities

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