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100-D Area In Situ Redox Treatability Test for Chromate-Contaminated Groundwater
A treatability test was conducted for the In Situ Redox Manipulation (ISRM) technology at the 100 D Area of the U. S. Department of Energy's Hanford Site. The target contaminant was dissolved chromate in groundwater. The ISRM technology creates a permeable subsurface treatment zone to reduce mobile chromate in groundwater to an insoluble form. The ISRM permeable treatment zone is created by reducing ferric iron to ferrous iron within the aquifer sediments, which is accomplished by injecting aqueous sodium dithionite into the aquifer and then withdrawing the reaction products. The goal of the treatability test was to create a linear ISRM barrier by injecting sodium dithionite into five wells. Well installation and site characterization activities began in spring 1997; the first dithionite injection took place in September 1997. The results of this first injection were monitored through the spring of 1998. The remaining four dithionite injections were carried out in May through July of 1998.These five injections created a reduced zone in the Hanford unconfined aquifer approximately 150 feet in length (perpendicular to groundwater flow) and 50 feet wide. The reduced zone extended over the thickness of the unconfined zone. Analysis of post-emplacement groundwater samples showed concentrations of chromate, in …
Date:
October 12, 2000
Creator:
Williams, Mark D.; Vermeul, Vincent R.; Szecsody, James E. & Fruchter, Jonathan S.
Object Type:
Report
System:
The UNT Digital Library
100-D Area In Situ Redox Treatability Test for Chromate-Contaminated Groundwater
None
Date:
October 12, 2000
Creator:
Williams, M. D.; Vermeul, V. R.; Szecsody, J. E. & Fruchter, J. S.
Object Type:
Report
System:
The UNT Digital Library
The Albany News (Albany, Tex.), Vol. 125, No. 20, Ed. 1 Thursday, October 12, 2000
Weekly newspaper from Albany, Texas that includes local, county, and state news along with extensive advertising.
Date:
October 12, 2000
Creator:
Lucas, Melinda L.
Object Type:
Newspaper
System:
The Portal to Texas History
Altus Times (Altus, Okla.), Vol. 101, No. 183, Ed. 1 Thursday, October 12, 2000
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
October 12, 2000
Creator:
Bush, Michael
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Archer County News (Archer City, Tex.), No. 41, Ed. 1 Thursday, October 12, 2000
Weekly newspaper from Archer City, Texas that includes local, state, and national news along with advertising.
Date:
October 12, 2000
Creator:
Lewis, Shelley
Object Type:
Newspaper
System:
The Portal to Texas History
Atomic transport at liquid metal/Al{sub 2}O{sub 3} interfaces
In this work, atomic force microscopy (AFM) has been used to identify the controlling transport mechanisms at metal/oxide interfaces and measure the corresponding diffusivities. Interfacial transport rates in our experiments are two to four orders of magnitude faster than any previously reported rates for the oxide surface. The interfacial diffusivities and the degree of interfacial anisotropy depend on the oxygen activity of the system. Atomic transport at metal/oxide interfaces plays a defining role in many technological processes, and these experiments provide fundamental data for the formulation of the atomic theory needed to explain many of the observed phenomena.
Date:
October 12, 2000
Creator:
Saiz, Eduardo; Cannon, Rowland M. & Tomsia, Antoni P.
Object Type:
Article
System:
The UNT Digital Library
The Baytown Sun (Baytown, Tex.), Vol. 78, No. 321, Ed. 1 Thursday, October 12, 2000
Daily newspaper from Baytown, Texas that includes local, state, and national news along with advertising.
Date:
October 12, 2000
Creator:
Cash, Wanda Garner
Object Type:
Newspaper
System:
The Portal to Texas History
Biomass Commercialization Prospects the Next 2 to 5 Years; BIOMASS COLLOQUIES 2000
A series of four colloquies held in the first quarter of 2000 examined the expected development of biomass commercialization in the next 2 to 5 years. Each colloquy included seven to ten representatives from key industries that can contribute to biomass commercialization and who are in positions to influence the future direction. They represented: Corn Growers, Biomass Suppliers, Plant Science Companies, Process Engineering Companies, Chemical Processors, Agri-pulp Suppliers, Current Ethanol Producers, Agricultural Machinery Manufacturers, and Enzyme Suppliers. Others attending included representatives from the National Renewable Energy Lab., Oak Ridge National Laboratory, the U.S. Department of Energy's Office of Fuels Development, the U.S. Department of Agriculture, environmental groups, grower organizations, and members of the financial and economic development community. The informal discussions resulted in improved awareness of the current state, future possibilit ies, and actions that can accelerate commercialization. Biomass commercialization on a large scale has four common issues: (1) Feedstock availability from growers; (2) Large-scale collection and storage; (3) An economic process; (4) Market demand for the product.
Date:
October 12, 2000
Creator:
Hettenhaus, J. R.; Wooley, R. & Wiselogel, A.
Object Type:
Report
System:
The UNT Digital Library
Bogata News (Bogata, Tex.), Vol. 90, No. 22, Ed. 1 Thursday, October 12, 2000
Weekly newspaper from Bogata, Texas that includes local, state, and national news along with advertising.
Date:
October 12, 2000
Creator:
Nichols, Nanalee & Nichols, Thomas
Object Type:
Newspaper
System:
The Portal to Texas History
The Canadian Record (Canadian, Tex.), Vol. 110, No. 41, Ed. 1 Thursday, October 12, 2000
Weekly newspaper from Canadian, Texas that includes local, state and national news along with extensive advertising.
Date:
October 12, 2000
Creator:
Ezzell, Nancy & Brown, Laurie Ezzell
Object Type:
Newspaper
System:
The Portal to Texas History
Canister Transfer System Description Document
The Canister Transfer System receives transportation casks containing large and small disposable canisters, unloads the canisters from the casks, stores the canisters as required, loads them into disposal containers (DCs), and prepares the empty casks for re-shipment. Cask unloading begins with cask inspection, sampling, and lid bolt removal operations. The cask lids are removed and the canisters are unloaded. Small canisters are loaded directly into a DC, or are stored until enough canisters are available to fill a DC. Large canisters are loaded directly into a DC. Transportation casks and related components are decontaminated as required, and empty casks are prepared for re-shipment. One independent, remotely operated canister transfer line is provided in the Waste Handling Building System. The canister transfer line consists of a Cask Transport System, Cask Preparation System, Canister Handling System, Disposal Container Transport System, an off-normal canister handling cell with a transfer tunnel connecting the two cells, and Control and Tracking System. The Canister Transfer System operating sequence begins with moving transportation casks to the cask preparation area with the Cask Transport System. The Cask Preparation System prepares the cask for unloading and consists of cask preparation manipulator, cask inspection and sampling equipment, and decontamination equipment. …
Date:
October 12, 2000
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Cherokeean/Herald (Rusk, Tex.), Vol. 151, No. 34, Ed. 1 Thursday, October 12, 2000
Weekly newspaper from Rusk, Texas that includes local, state and national news along with extensive advertising.
Date:
October 12, 2000
Creator:
Whitehead, Marie
Object Type:
Newspaper
System:
The Portal to Texas History
Comanche Chief (Comanche, Tex.), No. 23, Ed. 1 Thursday, October 12, 2000
Weekly newspaper from Comanche, Texas that includes local, state, and national news along with advertising.
Date:
October 12, 2000
Creator:
Wilkerson, James C., III
Object Type:
Newspaper
System:
The Portal to Texas History
Conceptual Design of a 100 MW Electron Beam Accelerator Module for the National Hypersonic Wind Tunnel Program
None
Date:
October 12, 2000
Creator:
Schneider, L.X.
Object Type:
Article
System:
The UNT Digital Library
Daily Journal (Perry, Okla.), Vol. 107, No. 201, Ed. 1 Thursday, October 12, 2000
Daily newspaper from Perry, Oklahoma that includes local, state, and national news along with advertising.
Date:
October 12, 2000
Creator:
Brown, Gloria
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Defense High Level Waste Disposal Container System Description
The Defense High Level Waste Disposal Container System supports the confinement and isolation of waste within the Engineered Barrier System of the Monitored Geologic Repository (MGR). Disposal containers are loaded and sealed in the surface waste handling facilities, transferred to the underground through the accesses using a rail mounted transporter, and emplaced in emplacement drifts. The defense high level waste (HLW) disposal container provides long-term confinement of the commercial HLW and defense HLW (including immobilized plutonium waste forms (IPWF)) placed within disposable canisters, and withstands the loading, transfer, emplacement, and retrieval loads and environments. U.S. Department of Energy (DOE)-owned spent nuclear fuel (SNF) in disposable canisters may also be placed in a defense HLW disposal container along with commercial HLW waste forms, which is known as 'co-disposal'. The Defense High Level Waste Disposal Container System provides containment of waste for a designated period of time, and limits radionuclide release. The disposal container/waste package maintains the waste in a designated configuration, withstands maximum handling and rockfall loads, limits the individual canister temperatures after emplacement, resists corrosion in the expected handling and repository environments, and provides containment of waste in the event of an accident. Defense HLW disposal containers for HLW disposal …
Date:
October 12, 2000
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Development of an Autonomous Pathogen Detection System
An Autonomous Pathogen Detection System (APDS) is being designed and evaluated for use in domestic counter-terrorism. The goal is a fully automated system that utilizes both flow cytometry and polymerase chain reaction (PCR) to continuously monitor the air for BW pathogens in major buildings or high profile events. A version 1 APDS system consisting of an aerosol collector, a sample preparation subsystem, and a flow cytometer for detecting the antibody-labeled target organisms has been completed and evaluated. Improved modules are under development for a version 2 APDS including a Lawrence Livermore National Laboratory-designed aerosol preconcentrator, a multiplex flow cytometer, and a flow-through PCR detector.
Date:
October 12, 2000
Creator:
Langlosi, S.; Brown, S.; Colston, B.; Jones, L.; Masquelier, D.; Meyer, P. et al.
Object Type:
Article
System:
The UNT Digital Library
Drug Control: Challenges in Implementing Plan Colombia
Testimony issued by the General Accounting Office with an abstract that begins "The United States has been providing assistance to Colombia since the early 1970s to help the Colombian National Police and other law enforcement agencies, the military, and civilian agencies reduce illegal drug production and trafficking. Recognizing that illegal drug activities are a serious problem, the Colombian government announced a counternarcotics plan known as Plan Colombia. This testimony reviews the U.S. counternarcotics efforts in Colombia. Although U.S.-provided assistance has enhanced Colombian counternarcotics capabilities, its usefulness has sometimes been limited because of long-standing problems in planning and implementation. For example, little progress has been made in launching a plan to have Colombia's National Police assume a larger role in managing the aerial eradication program, which requires costly U.S. contractor assistance. The governments of the United States and Colombia face continuing and new financial and management challenges in implementing Plan Colombia. The costs and activities needed to implement the plan are unknown at this time, and it will take years before any significant reduction in the drug trade is seen. Colombia must resolve problems with its political and economic stability and improve its management of counternarcotics funding in order to successfully …
Date:
October 12, 2000
Creator:
United States. General Accounting Office.
Object Type:
Text
System:
The UNT Digital Library
The Dublin Citizen (Dublin, Tex.), Vol. 11, No. 7, Ed. 1 Thursday, October 12, 2000
Weekly newspaper from Dublin, Texas that includes local, state, and national news along with advertising.
Date:
October 12, 2000
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Electra Star-News (Electra, Tex.), Vol. 94, No. 9, Ed. 1 Thursday, October 12, 2000
Weekly newspaper from Electra, Texas that includes local, state, and national news along with advertising.
Date:
October 12, 2000
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Electromagnetic Borehole Flowmeter Testing in R-Area
Six constant-rate, multiple-well aquifer tests were recently conducted in R-area to provide site-specific in situ hydraulic parameters for assessing groundwater flow and contaminant transport models of R-Reactor Seepage Basins (RRSB) plume migration and RRSB remedial alternatives. The pumping tests were performed in the Upper Three Runs and Gordon aquifers between December 1999 and February 2000. The tests provide reliable estimates of horizontal conductivity averaged over aquifer thickness, and a relatively large horizontal zone of influence. To complement these results, Electromagnetic Borehole Flowmeter (EBF) testing was subsequently performed to determine the vertical variation of horizontal conductivity for RPC-2PR, RPC-3PW, RPT-2PW, RPT-3PW, RPT-4PW and RPT-30PZ. The EBF data generally indicate significant aquifer heterogeneity over the tested screen intervals (Figures 14, 16-18, 20, 22, 24, 26 and 27-31). The vertical variation of groundwater flow in or out of the well screen under ambient conditions was also measured (Figures 13, 15, 19, 21, 23 and 25). These data have implications for contaminant monitoring.
Date:
October 12, 2000
Creator:
Flach, G. P.
Object Type:
Report
System:
The UNT Digital Library
Engineering Task Plan for the Ultrasonic Inspection of Hanford Double-Shell Tanks - FY 2001
This document facilitates the ultrasonic examination of Hanford double-shell tanks. Included are a plan for engineering activities, plan for performance demonstration testing, and a plan for field activities. Also included are a Statement of Work for contractor performance and a protocol to be followed should tank flaws that exceed the acceptance criteria are found.
Date:
October 12, 2000
Creator:
JENSEN, C.E.
Object Type:
Report
System:
The UNT Digital Library
The Express-Star (Chickasha, Okla.), Ed. 1 Thursday, October 12, 2000
Daily newspaper from Chickasha, Oklahoma that includes local, state, and national news along with advertising.
Date:
October 12, 2000
Creator:
Bush, Kent
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Federally Funded Math and Science Materials
Correspondence issued by the General Accounting Office with an abstract that begins "The federal government is an important sponsor of math and science education for elementary and secondary school students. GAO identified at least 61 federally funded projects that are designed to improve students' skills in these key areas. The materials in these projects are taught over the course of a partial school year, single school year, or multiple school years. Algebra, calculus, and basic math are a few of the subjects being taught students through grade 12. In the science programs, students are exposed to biology, astronomy, and natural science. Federal agencies generally support programs that are relevant to their own agency missions. For example, the Environmental Protection Agency funds programs that teach students about water quality and conservation, and the National Aeronautics and Space Administration funds the Astronomy Village, a multimedia program that teaches students about stars and stellar evolution."
Date:
October 12, 2000
Creator:
United States. General Accounting Office.
Object Type:
Text
System:
The UNT Digital Library