scholarly journals Three-Dimensional Groundwater Models of the 300 Area at the Hanford Site, Washington State

2008 ◽  
Author(s):  
Mark D. Williams ◽  
Mark L. Rockhold ◽  
Paul D. Thorne ◽  
Yousu Chen
Keyword(s):  
Three Dimensional ◽  
Washington State ◽  
Hanford Site

scholarly journals Three-dimensional conceptual model for the Hanford Site unconfined aquifer system: FY 1994 status report

1994 ◽  
Author(s):  
P.D. Thorne ◽  
M.A. Chamness ◽  
V.R. Vermeul ◽  
Q.C. Macdonald ◽  
S.E. Schubert
Keyword(s):  
Conceptual Model ◽  
Three Dimensional ◽  
Unconfined Aquifer ◽  
Status Report ◽  
Hanford Site ◽  
Aquifer System

Groundwater Remediation of Hexavalent Chromium Along the Columbia River at the Hanford Site in Washington State, USA

2011 ◽  
Author(s):  
Dyan L. Foss ◽  
Briant L. Charboneau
Keyword(s):  
Hexavalent Chromium ◽  
Groundwater Remediation ◽  
Columbia River ◽  
Washington State ◽  
Department Of Energy ◽  
Hanford Site ◽  
Pump And Treat ◽  
Environmental Setting ◽  
Calcium Polysulfide

The U.S. Department of Energy Hanford Site, formerly used for nuclear weapons production, encompasses 1500 square kilometers in southeast Washington State along the Columbia River. A principle threat to the river are the groundwater plumes of hexavalent chromium (Cr(VI)), which affect approximately 9.8 square kilometers, and 4.1 kilometers of shoreline. Cleanup goals are to stop Cr(VI) from entering the river by the end of 2012 and remediate the groundwater plumes to the drinking water standards by the end of 2020. Five groundwater pump-and-treat systems are currently in operation for the remediation of Cr(VI). Since the 1990s, over 13.6 billion L of groundwater have been treated; over 1,435 kg of Cr(VI) have been removed. This paper describes the unique aspects of the site, its environmental setting, hydrogeology, groundwater-river interface, riverine hydraulic effects, remediation activities completed to date, a summary of the current and proposed pump-and-treat operations, the in situ redox manipulation barrier, and the effectiveness of passive barriers, resins, and treatability testing results of calcium polysulfide, biostimulation, and electrocoagulation, currently under evaluation.

scholarly journals The Sensitivity of Orographic Precipitation to Flow Direction: An Idealized Modeling Approach

2017 ◽  
Vol 18 (6) ◽  
pp. 1673-1688 ◽  
Author(s):  
Lee Picard ◽  
Clifford Mass
Keyword(s):  
Pacific Northwest ◽  
Wind Direction ◽  
Flow Direction ◽  
Three Dimensional ◽  
Washington State ◽  
Directional Sensitivity ◽  
Orographic Precipitation ◽  
Major Question ◽  
Olympic Mountains ◽  
Physics Model

Abstract A major question regarding orographic precipitation is its sensitivity to flow direction, with some research suggesting substantial sensitivity. To examine this issue, this paper describes a full physics model with realistic three-dimensional terrain that is forced by a single input sounding. This system is used to investigate the sensitivity of orographic precipitation to wind direction over the Pacific Northwest for conditions approximating an atmospheric river. The model results show considerable modulation of regional precipitation as flow direction changes, with results for four Washington State river drainages agreeing well with previous observational studies. It is shown that precipitation amounts over such drainages can vary substantially with very small changes in the direction of the incoming flow. To explore the origin of directional sensitivity of precipitation over the Olympic Mountains of western Washington State, additional experiments were carried out using modified terrain fields with smoothed or idealized Olympic Mountains, or with nearby orography removed. These simulations suggest that the sensitivity of Olympic Mountain precipitation to wind direction is more strongly modulated by the presence of surrounding orography than by the specific geometry of the Olympic Mountains.

Goat moths (Lepidoptera: Cossidae) of the Hanford Site and Hanford National Monument, Washington State

2009 ◽  
Vol 85 (4) ◽  
pp. 182-186
Author(s):  
Richard S. Zack ◽  
Peter J. Landolt ◽  
Dennis Strenge
Keyword(s):  
Washington State ◽  
Hanford Site ◽  
National Monument

scholarly journals Microbially mediated iron redox cycling of subsurface sediments from Hanford Site, Washington State, USA

2020 ◽  
Vol 546 ◽  
pp. 119643 ◽  
Author(s):  
Michael E. Bishop ◽  
Hailiang Dong ◽  
Paul Glasser ◽  
Brandon R. Briggs ◽  
Martin Pentrak ◽  
...  
Keyword(s):  
Redox Cycling ◽  
Washington State ◽  
Hanford Site ◽  
Subsurface Sediments ◽  
Iron Redox

scholarly journals Spectroscopic and Diffraction Study of Uranium Speciation in Contaminated Vadose Zone Sediments from the Hanford Site, Washington State

2004 ◽  
Vol 38 (10) ◽  
pp. 2822-2828 ◽  
Author(s):  
Jeffrey G. Catalano ◽  
Steven M. Heald ◽  
John M. Zachara ◽  
Gordon E. Brown
Keyword(s):  
Diffraction Study ◽  
Vadose Zone ◽  
Washington State ◽  
Hanford Site ◽  
Uranium Speciation
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