scholarly journals TECHNICAL EVALUATION OF THE INTERACTION OF GROUNDWATER WITH THE COLUMBIA RIVER AT THE DEPARTMENT OF ENERGY HANFORD SITE 100-D AREA

2008 ◽  
Author(s):  
PETERSEN SW
Keyword(s):  
Columbia River ◽  
Department Of Energy ◽  
Hanford Site ◽  
Technical Evaluation

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 SUPPLEMENTAL COLUMBIA RIVER PROTECTION ACTIVITIES AT THE DEPARTMENT OF ENERGY HANFORD SITE 2008 TECHNICAL REVIEW

2008 ◽  
Author(s):  
B Looney ◽  
D Dawn S. Kaback ◽  
E Eugene L. LeBoeuf ◽  
J Joe Rossabi ◽  
K Karen L. Skubal ◽  
...  
Keyword(s):  
Columbia River ◽  
Department Of Energy ◽  
Hanford Site ◽  
Technical Review

scholarly journals SUPPLEMENTAL COLUMBIA RIVER PROTECTION ACTIVITIES AT THE DEPARTMENT OF ENERGY HANFORD SITE: 2006 TECHNICAL PEER REVIEW

2006 ◽  
Author(s):  
B Looney ◽  
Dawn Kaback ◽  
Gene Leboeuf ◽  
Jason Mulvihill-Kuntz ◽  
Lynn Lefkoff
Keyword(s):  
Peer Review ◽  
Columbia River ◽  
Department Of Energy ◽  
Hanford Site

scholarly journals Investigation of the Strontium-90 Contaminant Plume along the Shoreline of the Columbia River at the 100-N Area of the Hanford Site

2007 ◽  
Author(s):  
Donaldo P. Mendoza ◽  
Gregory W. Patton ◽  
Mary J. Hartman ◽  
Frank A. Spane ◽  
Mark D. Sweeney ◽  
...  
Keyword(s):  
Columbia River ◽  
Contaminant Plume ◽  
Hanford Site ◽  
Strontium 90

Four Decades of Environmental Change and Their Influence upon Native Wildlife and Fish on the Mid-Columbia River, Washington, USA

1985 ◽  
Vol 12 (3) ◽  
pp. 241-248 ◽  
Author(s):  
William H. Rickard ◽  
Donald G. Watson
Keyword(s):  
Environmental Change ◽  
Agricultural Practices ◽  
Columbia River ◽  
Livestock Grazing ◽  
Irrigated Agriculture ◽  
Hanford Site ◽  
Bald Eagles ◽  
The Past ◽  
Riverine Habitats ◽  
Hanford Reach

The Hanford Reach of the Columbia River has experienced a great deal of human-imposed environmental change within the past 40 years, as has much of the adjacent land. The major disturbances have been from hydroelectric dams' construction and an intensive expansion of irrigated agriculture. A notable exception to the steady expansion of agriculture and dam-building has been the 1,400 km2 Hanford Site, which was established in 1943. Today, the Hanford Site consists mostly of undeveloped land that still supports native vegetation. It is free from agricultural practices, and has also been essentially free from livestock grazing and the shooting of animal wildlife. This conservative land-use has favoured populations of native wildlife that use the riverine habitats of the Hanford Reach of the Columbia River—e.g. Mule Deer, Canada Goose, and Great Blue Heron, are notable instances.The Hanford Reach supports the only mainstem Chinook Salmon spawning habitat on the Columbia River. This population is maintained by a combination of natural spawning and artificial propagation in concert with a regulated harvest of returning adults. Numbers of mainstem spawning Salmon have increased markedly in the past 10 years, and this has attracted increasing numbers of wintering Bald Eagles to the Hanford Reach.

Improved Third Generation Peristaltic Crawler for Removal of High-Level Waste Plugs in United States Department of Energy Hanford Site Pipelines

2013 ◽  
Author(s):  
Gabriela Vazquez ◽  
Tomas Pribanic
Keyword(s):  
Fatigue Testing ◽  
Experimental Tests ◽  
Department Of Energy ◽  
High Level Waste ◽  
Pipeline System ◽  
United States Department ◽  
Third Generation ◽  
Test Bed ◽  
Hanford Site ◽  
High Level

There are approximately 56 million gallons (212km3) of high level waste (HLW) at the U.S. Department of Energy (DOE) Hanford Site. It is scheduled that by the year 2040, the HLW is to be completely transferred to secure double-shell tanks (DST) from the leaking single-tanks (SST) via transfer pipeline system. Blockages have formed inside the pipes during transport because of the variety in composition and characteristics of the waste. These full and partial plugs delay waste transfers and require manual intervention to repair, therefore are extremely expensive, consuming millions of dollars and further threatening the environment. To successfully continue the transfer of waste through the pipelines, DOE site engineers are in need of a technology that can accurately locate the blockages and unplug the pipelines. In this study, the proposed solution to remediate blockages formed in pipelines is the use of a peristaltic crawler: a pneumatically/hydraulically operated device that propels itself in a worm-like motion through sequential fluctuations of pressure in its air cavities. The crawler is also equipped with a high-pressure water nozzle used to clear blockages inside the pipelines. The crawler is now in its third generation. Previous generations showed limitations in its durability, speed, and maneuverability. Latest improvements include an automation of sequence that prevents kickback, a front-mounted inspection camera for visual feedback, and a thinner wall outer bellow for improved maneuverability. Different experimental tests were conducted to evaluate the improvements of crawler relative to its predecessors using a pipeline test-bed assembly. Anchor force tests, unplugging tests, and fatigue testing for both the bellow and rubber rims have yet to be conducted and thus results are not presented in this research. Experiments tested bellow force and response, cornering maneuverability, and straight line navigational speed. The design concept and experimental test results are reported.

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