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An Investigation for Disposal of Drill Cuttings into Unconsolidated Sandstones and Clayey Sands
This project include experimental data and a set of models for relating elastic moduli/porosity/texture and static-to-dynamic moduli to strength and failure relationships for unconsolidated sands and clayey sands. The results of the project should provide the industry with a basis for wider use of oil base drilling fluids in water sensitive formations by implementing drill cutting injection into existing wells at abandoned formations and controlling fracture geometry to prevent ground water contamination.
Date:
September 11, 2000
Creator:
Mese, Ali; Dvorkin, Jack & Shillinglaw, John
Object Type:
Report
System:
The UNT Digital Library
Mountaintop Mining: Background on Current Controversies
Mountaintop removal mining involves removing the top of a mountain in order to recover the coal seams contained there. This practice occurs in several Appalachian states. It creates an immense quantity of excess spoil (dirt and rock that previously composed the mountaintop), which is typically placed in valley fills on the sides of the former mountains, burying streams that flow through the valleys. Critics say that, as a result of valley fills, stream water quality and the aquatic and wildlife habitat that streams support are destroyed by tons of rocks and dirt. The mining industry argues that mountaintop mining is essential to conducting surface coal mining in the Appalachian region and that surface coal mining would not be economically feasible there if producers were restricted from using valleys for the disposal of mining overburden. Mountaintop mining is regulated under several laws, including the Clean Water Act. This report provides background on regulatory requirements, controversies, and legal challenges to Clean Water Act regulation of mountaintop mining. Congressional attention to these issues also is discussed.
Date:
October 11, 2007
Creator:
Copeland, Claudia
Object Type:
Report
System:
The UNT Digital Library
Investigation of Accelerated Casing Corrosion in Two Wells at Waste Management Area A-AX
This report was revised in September 2008 to remove acid-extractable sodium data from Tables 3.13 and 3.14. The sodium data was removed due to potential contamination introduced during the acid extraction process. The rest of the text remains unchanged from the original report issued in August 2005. An overall goal of the Groundwater Performance Assessment Project, led by Pacific Northwest National Laboratory (PNNL) and per guidance in DOE Order 5400.1, includes characterizing and defining trends in the physical, chemical, and biological condition of the environment. To meet these goals, numerous Resource Conservation and Recovery Act (RCRA) monitoring wells have been installed throughout the Hanford Site. In 2003, it was determined that two RCRA monitoring wells (299-E24-19 and 299-E25-46) in Waste Management Area (WMA) A-AX failed due to rapid corrosion of the stainless steel casing over a significant length of the wells. Complete casing corrosion occurred between 276.6 and 277.7 feet below ground surface (bgs) in well 299- E24-19 and from 274.4 to 278.6 feet bgs in well 299-E25-46. CH2M HILL Hanford Group, Inc., asked scientists from PNNL to perform detailed analyses of vadose zone sediment samples collected in the vicinity of the WMA A-AX from depths comparable to those where …
Date:
September 11, 2008
Creator:
Brown, Christopher F.; Serne, R. Jeffrey; Schaef, Herbert T.; Williams, Bruce A.; Valenta, Michelle M.; Legore, Virginia L. et al.
Object Type:
Report
System:
The UNT Digital Library
Mineral Revenues: Data Management Problems and Reliance on Self-Reported Data for Compliance Efforts Put MMS Royalty Collections at Risk
Testimony issued by the Government Accountability Office with an abstract that begins "Companies that develop and produce federal oil and gas resources do so under leases administered by the Department of the Interior (Interior). Interior's Bureau of Land Management (BLM) and Offshore Minerals Management (OMM) are responsible for overseeing oil and gas operations on federal leases. Companies are required to self- report their production volumes and other data to Interior's Minerals Management Service (MMS) and to pay royalties either "in value" (payments made in cash), or "in kind" (payments made in oil or gas). GAO's testimony will focus on whether (1) Interior has adequate assurance that it is receiving full compensation for oil and gas produced from federal lands and waters, (2) MMS's compliance efforts provide a check on industry's self-reported data, (3) MMS has reasonable assurance that it is collecting the right amounts of royalty-in-kind oil and gas, and (4) the benefits of the royalty-in-kind program that MMS has reported are reliable. This testimony is based on ongoing work. When this work is complete, we expect to make recommendations to address these and other findings. To address these issues GAO analyzed MMS data, reviewed MMS, and other agency policies …
Date:
March 11, 2008
Creator:
United States. Government Accountability Office.
Object Type:
Text
System:
The UNT Digital Library
Feasibility Study on Using a Single Mixer Pump for Tank 241-AN-101 Waste Retrieval
The objective of this evaluation was to determine whether a single rotating pump located 20 ft off-center would adequately mix expected AN-101 waste. Three-dimensional, AN-101 pump jet mixing simulation results indicate that a single, 20-ft off-centered mixer pump would mobilize almost all solids even at the furthest tank wall for sludge yield strength up to 150 Pa or less. Because the yield strength of the AN-101 waste was estimated to be less than 150 Pa, the AN-101 pump mixing model results indicate that a single mixer pump would be suffice to mobilize bulk of the disturbed and diluted AN-101 solids.
Date:
February 11, 2003
Creator:
Onishi, Yasuo; Wells, Beric E.; Yokuda, Satoru T. & Terrones, Guillermo
Object Type:
Report
System:
The UNT Digital Library
Cherokeean Herald (Rusk, Tex.), Vol. 155, No. 25, Ed. 1 Wednesday, August 11, 2004
Weekly newspaper from Rusk, Texas that includes local, state and national news along with extensive advertising.
Date:
August 11, 2004
Creator:
Whitehead, Marie
Object Type:
Newspaper
System:
The Portal to Texas History
Cherokeean Herald (Rusk, Tex.), Vol. 156, No. 12, Ed. 1 Wednesday, May 11, 2005
Weekly newspaper from Rusk, Texas that includes local, state and national news along with extensive advertising.
Date:
May 11, 2005
Creator:
Whitehead, Marie
Object Type:
Newspaper
System:
The Portal to Texas History
Cherokeean Herald (Rusk, Tex.), Vol. 156, No. 47, Ed. 1 Wednesday, January 11, 2006
Weekly newspaper from Rusk, Texas that includes local, state and national news along with extensive advertising.
Date:
January 11, 2006
Creator:
Whitehead, Marie
Object Type:
Newspaper
System:
The Portal to Texas History
NATURAL RESOURCES ASSESSMENT
The purpose of this report is to summarize the scientific work that was performed to evaluate and assess the occurrence and economic potential of natural resources within the geologic setting of the Yucca Mountain area. The extent of the regional areas of investigation for each commodity differs and those areas are described in more detail in the major subsections of this report. Natural resource assessments have focused on an area defined as the ''conceptual controlled area'' because of the requirements contained in the U.S. Nuclear Regulatory Commission Regulation, 10 CFR Part 60, to define long-term boundaries for potential radionuclide releases. New requirements (proposed 10 CFR Part 63 [Dyer 1999]) have obviated the need for defining such an area. However, for the purposes of this report, the area being discussed, in most cases, is the previously defined ''conceptual controlled area'', now renamed the ''natural resources site study area'' for this report (shown on Figure 1). Resource potential can be difficult to assess because it is dependent upon many factors, including economics (demand, supply, cost), the potential discovery of new uses for resources, or the potential discovery of synthetics to replace natural resource use. The evaluations summarized are based on present-day use …
Date:
December 11, 2000
Creator:
Fenster, D.F.
Object Type:
Report
System:
The UNT Digital Library
Estimating Plume Volume for Geologic Storage of CO2 in Saline Aquifers
Typically, when a new subsurface flow and transport problem is first being considered, very simple models with a minimal number of parameters are used to get a rough idea of how the system will evolve. For a hydrogeologist considering the spreading of a contaminant plume in an aquifer, the aquifer thickness, porosity, and permeability might be enough to get started. If the plume is buoyant, aquifer dip comes into play. If regional groundwater flow is significant or there are nearby wells pumping, these features need to be included. Generally, the required parameters tend to be known from pre-existing studies, are parameters that people working in the field are familiar with, and represent features that are easy to explain to potential funding agencies, regulators, stakeholders, and the public. The situation for geologic storage of carbon dioxide (CO{sub 2}) in saline aquifers is quite different. It is certainly desirable to do preliminary modeling in advance of any field work since geologic storage of CO{sub 2} is a novel concept that few people have much experience with or intuition about. But the parameters that control CO{sub 2} plume behavior are a little more daunting to assemble and explain than those for a groundwater …
Date:
July 11, 2008
Creator:
Doughty, Christine
Object Type:
Article
System:
The UNT Digital Library
Summary of Radionuclide Reactive Transport Experiments in Fractured Tuff and Carbonate Rocks from Yucca Flat, Nevada Test Site
In the Yucca Flat basin of the Nevada Test Site (NTS), 747 shaft and tunnel nuclear detonations were conducted primarily within the tuff confining unit (TCU) or the overlying alluvium. The TCU in the Yucca Flat basin is hypothesized to inhibit radionuclide migration to the highly transmissive and regionally extensive lower carbonate aquifer (LCA) due to its wide-spread aerial extent, low permeability, and chemical reactivity. However, fast transport pathways through the TCU by way of fractures may provide a migration path for radionuclides to the LCA. Radionuclide transport in both TCU and the LCA fractures is likely to determine the location of the contaminant boundary for the Yucca Flat/Climax Mine Corrective Action Unit (CAU). Radionuclide transport through the TCU may involve both matrix and fracture flow. However, radionuclide migration over significant distances is likely to be dominated by fracture transport. Transport through the LCA will almost certainly be dominated by fracture flow, as the LCA has a very dense, low porosity matrix with very low permeability. Because of the complex nature of reactive transport in fractures, a stepwise approach to identifying mechanisms controlling radionuclide transport was used. The simplest LLNL experiments included radionuclide transport through synthetic parallel-plate fractured tuff and …
Date:
October 11, 2006
Creator:
Zavarin, M.; Roberts, S.; Reimus, P. & Johnson, M.
Object Type:
Report
System:
The UNT Digital Library
Pulse Jet Mixing Tests With Noncohesive Solids
This report summarizes results from pulse jet mixing (PJM) tests with noncohesive solids in Newtonian liquid conducted during FY 2007 and 2008 to support the design of mixing systems for the Hanford Waste Treatment and Immobilization Plant (WTP). Tests were conducted at three geometric scales using noncohesive simulants. The test data were used to independently develop mixing models that can be used to predict full-scale WTP vessel performance and to rate current WTP mixing system designs against two specific performance requirements. One requirement is to ensure that all solids have been disturbed during the mixing action, which is important to release gas from the solids. The second requirement is to maintain a suspended solids concentration below 20 weight percent at the pump inlet. The models predict the height to which solids will be lifted by the PJM action, and the minimum velocity needed to ensure all solids have been lifted from the floor. From the cloud height estimate we can calculate the concentration of solids at the pump inlet. The velocity needed to lift the solids is slightly more demanding than "disturbing" the solids, and is used as a surrogate for this metric. We applied the models to assess WTP …
Date:
May 11, 2009
Creator:
Meyer, Perry A.; Bamberger, Judith A.; Enderlin, Carl W.; Fort, James A.; Wells, Beric E.; Sundaram, S. K. et al.
Object Type:
Report
System:
The UNT Digital Library
Archer County News (Archer City, Tex.), No. 50, Ed. 1 Thursday, December 11, 2008
Weekly newspaper from Archer City, Texas that includes local, state, and national news along with advertising.
Date:
December 11, 2008
Creator:
Lewis, Shelley
Object Type:
Newspaper
System:
The Portal to Texas History
Cooper Review (Cooper, Tex.), Vol. 122, No. 15, Ed. 1 Thursday, April 11, 2002
Weekly newspaper from Cooper, Texas that includes local, state, and national news along with advertising.
Date:
April 11, 2002
Creator:
Stone, Beth
Object Type:
Newspaper
System:
The Portal to Texas History
The Goldthwaite Eagle (Goldthwaite, Tex.), Vol. 108, No. 31, Ed. 1 Wednesday, February 11, 2004
Weekly newspaper from Goldthwaite, Texas that includes local, state, and national news along with extensive advertising.
Date:
February 11, 2004
Creator:
Bridges, G. Frank & Bridges, Georgie
Object Type:
Newspaper
System:
The Portal to Texas History
The Ranger (San Antonio, Tex.), Vol. 75, No. 14, Ed. 1 Friday, February 11, 2000
Weekly student newspaper from San Antonio College in San Antonio, Texas that includes campus news along with advertising.
Date:
February 11, 2000
Creator:
San Antonio College
Object Type:
Newspaper
System:
The Portal to Texas History
The Albany News (Albany, Tex.), Vol. 133, No. 16, Ed. 1 Thursday, September 11, 2008
Weekly newspaper from Albany, Texas that includes local, county, and state news along with extensive advertising.
Date:
September 11, 2008
Creator:
Lucas, Melinda L.
Object Type:
Newspaper
System:
The Portal to Texas History
De Leon Free Press (De Leon, Tex.), Vol. 112, No. 40, Ed. 1 Thursday, April 11, 2002
Weekly newspaper from De Leon, Texas that includes local, state, and national news along with advertising.
Date:
April 11, 2002
Creator:
Morgan, Jerry
Object Type:
Newspaper
System:
The Portal to Texas History
Oral History Interview with Harold Gibbons, July 11, 2001
The National Museum of the Pacific War presents an interview with Harold Gibbons. Gibbons joined the Army in January of 1943. He shares details of his training and working at a German Prison Camp in Atlanta, Nebraska through September of 1943. He then transferred to Camp Clayburn, Louisiana training as a heavy equipment repair mechanic. In May of 1945 he traveled to Okinawa, where he worked as an engineer, setting up camp and machine shops. He worked in Okinawa through the end of the war and reenlisted, serving as a military policeman at Fort Knox until February of 1947.
Date:
July 11, 2001
Creator:
Gibbons, Harold
Object Type:
Text
System:
The Portal to Texas History
Archer County Advocate (Holliday, Tex.), Vol. 6, No. 36, Ed. 1 Thursday, December 11, 2008
Weekly newspaper from Holliday, Texas that includes local, state, and national news along with advertising.
Date:
December 11, 2008
Creator:
Phillips, Barbara
Object Type:
Newspaper
System:
The Portal to Texas History
Archer County News (Archer City, Tex.), No. 41, Ed. 1 Thursday, October 11, 2001
Weekly newspaper from Archer City, Texas that includes local, state, and national news along with advertising.
Date:
October 11, 2001
Creator:
Lewis, Shelley
Object Type:
Newspaper
System:
The Portal to Texas History
Comanche Chief (Comanche, Tex.), No. 36, Ed. 1 Thursday, January 11, 2001
Weekly newspaper from Comanche, Texas that includes local, state, and national news along with advertising.
Date:
January 11, 2001
Creator:
Wilkerson, James C., III
Object Type:
Newspaper
System:
The Portal to Texas History
Archer County Advocate (Holliday, Tex.), Vol. 4, No. 40, Ed. 1 Thursday, January 11, 2007
Weekly newspaper from Holliday, Texas that includes local, state, and national news along with advertising.
Date:
January 11, 2007
Creator:
Stevens, Charlotte
Object Type:
Newspaper
System:
The Portal to Texas History
Archer County News (Archer City, Tex.), No. 46, Ed. 1 Thursday, November 11, 2004
Weekly newspaper from Archer City, Texas that includes local, state, and national news along with advertising.
Date:
November 11, 2004
Creator:
Lewis, Shelley
Object Type:
Newspaper
System:
The Portal to Texas History