Sample records for grand junction umtra

  1. Site observational work plan for the UMTRA Project Site at Grand Junction, Colorado

    SciTech Connect (OSTI)

    NONE

    1996-03-01T23:59:59.000Z

    The U.S. Department of Energy (DOE) has prepared this initial site observational work plan (SOWP) for the Uranium Mill Tailings Remedial Action (UMTRA) Project site in Grand Junction, Colorado. This SOWP is one of the first UMTRA Ground Water Project documents developed to select a compliance strategy that meets the UMTRA ground water standards (40 CFR Part 192, as amended by 60 FR 2854) for the Grand Junction site. This SOWP applies information about the Grand Junction site to the compliance strategy selection framework developed in the UMTRA Ground Water Project draft programmatic environmental impact statement (PEIS). This risk-based, decision-making framework identifies the decision logic for selecting compliance strategies that could be used to meet the ground water standards. The DOE goal is to use the observational method to implement a cost-effective site strategy that complies with the ground water standards and protects human health and the environment. Based on an evaluation of the site characterization and risk assessment data available for the preparation of this SOWP, DOE proposes that the most likely compliance strategy for the Grand Junction site is no remediation based on the application of supplemental standards. This proposed strategy is based on a conceptual site model that indicates site-related contamination is confined to a limited-use aquifer as defined in the ground water standards.

  2. Site observational work plan for the UMTRA project site at Grand Junction, Colorado

    SciTech Connect (OSTI)

    NONE

    1996-01-01T23:59:59.000Z

    This site observational work plan (SOWP) is one of the first Uranium Mill Tailings Remedial Action (UMTRA) Ground Water Project documents developed to select a compliance strategy that meets the UMTRA ground water standards for the Grand Junction site. This SOWP applies information about the Grand Junction site to the compliance strategy selection framework developed in the UMTRA Ground Water Project draft programmatic environmental impact statement. This risk-based, decision-making framework identifies the decision logic for selecting compliance strategies that could be used to meet the ground water standards. The US Department of Energy (DOE) goal is to implement a cost-effective site strategy that complies with the ground water standards and protects human health and the environment. Based on an evaluation of the site characterization and risk assessment data available for the preparation of this SOWP, DOE proposes that the most likely compliance strategy for the Grand Junction site is no remediation with the application of supplemental standards. This proposed strategy is based on a conceptual site model that indicates site-related contamination is confined to a limited-use aquifer as defined in the ground water standards. The conceptual model demonstrates that the uranium processing-related contamination at the site has affected the unconfined alluvial aquifer, but not the deeper confined aquifer.

  3. Site-specific analysis of the cobbly soils at the Grand Junction processing site. [Uranium Mill Tailings Remedial Action (UMTRA) Project

    SciTech Connect (OSTI)

    Not Available

    1992-06-01T23:59:59.000Z

    This report describes a recent site-specific analysis to evaluate the necessity of a recommendation to install a slurry trench around the Grand Junction processing site. The following analysis addresses the cobbly nature of the site's radiologically contaminated foundation soil, reassesses the excavation depths based on bulk radionuclide concentrations, and presents data-based arguments that support the elimination of the initially proposed slurry trench. The slurry trench around the processing site was proposed by the Remedial Action Contractor (RAC) to minimize the amount of water encountered during excavation. The initial depths of excavation developed during conceptual design, which indicated the need for a slurry wall, were reexamined as part of this analysis. This reanalysis, based on bulk concentrations of a cobbly subsoil, supports decreasing the original excavation depth, limiting the dewatering quantities to those which can be dissipated by normal construction activities. This eliminates the need for a slurry trench andseparate water treatment prior to permitted discharge.

  4. Long-term surveillance plan for the Cheney disposal site near Grand Junction, Colorado

    SciTech Connect (OSTI)

    NONE

    1997-04-01T23:59:59.000Z

    This long-term surveillance plan (LTSP) describes the U.S. Department of Energy`s (DOE) long-term care program for the Uranium Mill Tailings Remedial Action (UMTRA) Project Cheney disposal site. The site is in Mesa County near Grand Junction, Colorado. The U.S. Nuclear Regulatory Commission (NRC) has developed regulations for the issuance of a general license for the custody and long-term care of UMTRA Project disposal sites in 10 CFR Part 40. The purpose of this general license is to ensure that the UMTRA Project disposal sites are cared for in a manner that protects public health and safety and the environment. Before each disposal site may be licensed, the NRC requires the DOE to submit a site-specific LTSP. The DOE prepared this LTSP to meet this requirement for the Cheney disposal site. The general license becomes effective when the NRC concurs with the DOE`s determination that remedial action is complete and the NRC formally accepts this plan. This document describes the long-term surveillance program the DOE will implement to ensure that the Cheney disposal site performs as designed. The program is based on site inspections to identify potential threats to disposal cell integrity. The LTSP is based on the UMTRA Project long-term surveillance program guidance and meets the requirements of 10 CFR {section}40.27(b) and 40 CFR {section}192.03.

  5. EA-0930: Facility Operations at the U.S. DOE Grand Junction Projects Office, Grand Junction, Colorado

    Broader source: Energy.gov [DOE]

    This EA evaluates the environmental impacts of the proposal to expand and upgrade the U.S. Department of Energy's Grand Junction Projects Office facilities and operations in Grand Junction, Colorado.

  6. EA-1037: Uranium Lease Management Program, Grand Junction, Colorado

    Broader source: Energy.gov [DOE]

    This EA evaluates the environmental impacts of the U.S. Department of Energy's Grand Junction Projects Office's proposal to maintain and preserve the nation's immediately accessible supply of...

  7. EA-1338: Transfer of the Department of Energy Grand Junction Office to Non-DOE Ownership, Grand Junction, Colorado

    Broader source: Energy.gov [DOE]

    This EA evaluates the environmental impacts for the proposed transfer of real and personal property at the U.S. Department of Energy's Grand Junction Office to non-DOE ownership.

  8. Special study on vegetative covers. [UMTRA Project

    SciTech Connect (OSTI)

    Not Available

    1988-11-01T23:59:59.000Z

    This report describes the findings of a special study on the use of vegetative covers to stabilize tailings piles for the Uranium Mill Tailings Remedial Action (UMTRA) Project. The principal rationale for using plants would be to establish a dynamic system for controlling water balance. Specifically, vegetation would be used to intercept and transpire precipitation to the atmosphere, rather than allowing water to drain into the tailings and mobilize contaminants. This would facilitate compliance with groundwater standards proposed for the UMTRA Project by the Environmental Protection Agency. The goals of the study were to evaluate the feasibility of using vegetative covers on UMTRA Project piles, define the advantages and disadvantages of vegetative covers, and develop general guidelines for their use when such use seems reasonable. The principal method for the study was to analyze and apply to the UMTRA Project the results of research programs on vegetative covers at other US Department of Energy (DOE) waste management facilities. The study also relied upon observations made of existing stabilized piles at UMTRA Project sites where natural vegetation is growing on the rock-covered surfaces. Water balance and erosion models were also used to quantify the long-term performance of vegetative covers planned for the topslopes of stabilized piles at Grand Junction and Durango, Colorado, two UMTRA Project sites where the decision was made during the course of this special study to use vegetative covers. Elements in the design and construction of the vegetative covers at these two sites are discussed in the report, with explanations of the differing features that reflect differing environmental conditions. 28 refs., 18 figs., 9 tabs.

  9. Environmental Audit of the Grand Junction Projects Office

    SciTech Connect (OSTI)

    Not Available

    1991-08-01T23:59:59.000Z

    The Grand Junction Projects Office (GJPO) is located in Mesa County, Colorado, immediately south and west of the Grand Junction city limits. The US Atomic Energy Commission (AEC) established the Colorado Raw Materials Office at the present-day Grand Junction Projects Office in 1947, to aid in the development of a viable domestic uranium industry. Activities at the site included sampling uranium concentrate; pilot-plant milling research, including testing and processing of uranium ores; and operation of a uranium mill pilot plant from 1954 to 1958. The last shipment of uranium concentrate was sent from GJPO in January, 1975. Since that time the site has been utilized to support various DOE programs, such as the former National Uranium Resource Evaluation (NURE) Program, the Uranium Mill Tailings Remedial Action Project (UMTRAP), the Surplus Facilities Management Program (SFMP), and the Technical Measurements Center (TMC). All known contamination at GJPO is believed to be the result of the past uranium milling, analyses, and storage activities. Hazards associated with the wastes impounded at GJPO include surface and ground-water contamination and potential radon and gamma-radiation exposure. This report documents the results of the Baseline Environmental Audit conducted at Grand Junction Projects Office (GJPO) located in Grand Junction, Colorado. The Grand Junction Baseline Environmental Audit was conducted from May 28 to June 12, 1991, by the Office of Environmental Audit (EH-24). This Audit evaluated environmental programs and activities at GJPO, as well as GJPO activities at the State-Owned Temporary Repository. 4 figs., 12 tabs.

  10. Estimating commuter rail demand to Kendall Square along the Grand Junction Corridor

    E-Print Network [OSTI]

    Bockelie, Adam

    2012-01-01T23:59:59.000Z

    Since acquiring the Grand Junction Railroad in June 2010 from CSX, the Massachusetts Bay Transit Authority (MBTA) has explored the possibility of using the line for commuter rail service. In addition the Grand Junction ...

  11. Grand Junction Office Founder Honored at the

    Office of Environmental Management (EM)

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  12. Grand Junction, Colorado, Site Fact Sheet

    Office of Legacy Management (LM)

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  13. United States Department of Energy, Grand Junction Office

    SciTech Connect (OSTI)

    Not Available

    1980-01-01T23:59:59.000Z

    The Grand Junction Office (GJO), US Department of Energy (DOE), develops and administers programs for evaluating domestic uranium resources and the production capability of industry; for developing resource planning information for DOE; and for advancing geologic and geophysical exploration concepts and techniques. In addition, GJO administers the leasing of mineral lands under DOE control, and carries out activities relating to the environmental aspects of uranium mining and milling, including remedial programs. The Office is staffed by administrative and technical program-management personnel. Bendix Field Engineering Corporation (Bendix) is the DOE operating contractor at the Grand Junction, Colorado, Government-owned/contractor-operated (GOCO) facility. The technical staffs of both GJO and Bendix are primarily geoscience-oriented. Specifically during 1980, uranium resource assessment on 135 National Topographic Map Series (NTMS) quadrangles was completed, along with other specific studies, to yield October 1980 national resource estimates. In addition, updated uranium supply analysis and production capability projections were completed. Another key aspect of this successful program was the development of improved geophysical and geochemical equipment and techniques in support of uranium resource assessment. Much of the hardware and know-how developed was turned over to the public and to the uranium industry at large for application to uranium exploration and the assessment of uranium company resources. The Grand Junction Office also participated actively during 1980 in international cooperative research on uranium exploration techniques and on the geology of uranium deposits.

  14. Environmental assessment of facility operations at the U.S. Department of Energy Grand Junction Projects Office, Grand Junction, Colorado

    SciTech Connect (OSTI)

    NONE

    1996-06-01T23:59:59.000Z

    The US Department of Energy (DOE) has prepared a sitewide environmental assessment (EA) of the proposed action to continue and expand present-day activities on the DOE Grand Junction Projects Office (GJPO) facility in Grand Junction, Colorado. Because DOE-GJPO regularly proposes and conducts many different on-site activities, DOE decided to evaluate these activities in one sitewide EA rather than in multiple, activity-specific documents. On the basis of the information and analyses presented in the EA, DOE has determined that the proposed action does not constitute a major Federal action significantly affecting the quality of the human environment, as defined by the National Environmental Policy Act (NEPA) of 1969. Therefore, preparation of an environmental impact statement is not required for facility operations, and DOE is issuing this Finding of No Significant Impact (FONSI).

  15. Baseline risk assessment of ground water contamination at the Uranium Mill Tailings Site near Grand Junction, Colorado

    SciTech Connect (OSTI)

    Not Available

    1994-06-01T23:59:59.000Z

    This Baseline Risk Assessment of Ground Water Contamination at the Uranium Mill Tailings Site Near Grand Junction, Colorado evaluates potential impacts to public health or the environment resulting from ground water contamination at the former uranium mill processing site. The tailings and other contaminated material at this site were placed in an off-site disposal cell by the US Department of Energy`s (DOE) Uranium Mill Tailings Remedial Action (UMTRA) Project. The remedial activities at the site were conducted from 1989 to 1993. Currently, the UMTRA Project is evaluating ground water contamination. This risk assessment is the first document specific to this site for the Ground Water Project. This risk assessment evaluates the most contaminated ground water that flows beneath the processing site toward the Colorado River. The monitor wells that have consistently shown the highest concentrations of most contaminants are used to assess risk. This risk assessment will be used in conjunction with additional activities and documents to determine what remedial action may be needed for contaminated ground water at the site. This risk assessment follows an approach outlined by the EPA. the first step is to evaluate ground water data collected from monitor wells at the site. Evaluation of these data showed that the contaminants of potential concern in the ground water are arsenic, cadmium, cobalt, fluoride, iron, manganese, molybdenum, nickel, sulfate, uranium, vanadium, zinc, and radium-226. The next step in the risk assessment is to estimate how much of these contaminants people would be exposed to if they drank from a well installed in the contaminated ground water at the former processing site.

  16. UMTRA Project water sampling and analysis plan, Canonsburg, Pennsylvania. Revision 1

    SciTech Connect (OSTI)

    NONE

    1995-09-01T23:59:59.000Z

    Surface remedial action was completed at the US Department of Energy (DOE) Canonsburg and Burrell Uranium Mill Tailings Remedial Action (UMTRA) Project sites in southwestern Pennsylvania in 1985 and 1987, respectively. The Burrell disposal site, included in the UMTRA Project as a vicinity property, was remediated in conjunction with the remedial action at Canonsburg. On 27 May 1994, the Nuclear Regulatory Commission (NRC) accepted the DOE final Long-Term Surveillance Plan (LTSP) (DOE, 1993) for Burrell thus establishing the site under the general license in 10 CFR {section}40.27 (1994). In accordance with the DOE guidance document for long-term surveillance (DOE, 1995), all NRC/DOE interaction on the Burrell site`s long-term care now is conducted with the DOE Grand Junction Projects Office in Grand Junction, Colorado, and is no longer the responsibility of the DOE UMTRA Project Team in Albuquerque, New Mexico. Therefore, the planned sampling activities described in this water sampling and analysis plan (WSAP) are limited to the Canonsburg site. This WSAP identifies and justifies the sampling locations, analytical parameters, detection limits, and sampling frequencies for routine monitoring at the Canonsburg site for calendar years 1995 and 1996. Currently, the analytical data further the site characterization and demonstrate that the disposal cell`s initial performance is in accordance with design requirements.

  17. Vegetative covers: Special study. [Uranium Mill Tailings Remedial Action (UMTRA) Project

    SciTech Connect (OSTI)

    Not Available

    1988-11-01T23:59:59.000Z

    This report describes the findings of a special study on the use of vegetative covers to stabilize tailings piles for the Uranium Mill Tailings Remedial Action (UMTRA) Project. The principal rationale for using plants would be to establish a dynamic system for controlling water balance. Specifically, vegetation would be used to intercept and transpire precipitation to the atmosphere, rather than allowing water to drain into the tailings and mobilize contaminants. This would facilitate compliance with groundwater standards proposed for the UMTRA Project by the Environmental Protection Agency. The goals of the study were to (1) evaluate the feasibility of using vegetative covers on UMTRA Project piles, (2) define the advantages and disadvantages of vegetative covers, and (3) develop general guidelines for their use when such use seems reasonable. The principal method for the study was to analyze and apply to the UMTRA Project the results of research programs on vegetative covers at other US Department of Energy (DOE) waste management facilities. The study also relied upon observations made of existing stabilized piles at UMTRA Project sites (Shiprock, New Mexico; Burrell, Pennsylvania; and Clive, Utah) where natural vegetation is growing on the rock-covered surfaces. Water balance and erosion models were also used to quantify the long-term performance of vegetative covers planned for the topslopes of stabilized piles at Grand Junction and Durango, Colorado, two UMTRA Project sites where the decision was made during the course of this special study to use vegetative covers. Elements in the design and construction of the vegetative covers at these two sites are discussed in the report, with explanations of the differing features that reflect differing environmental conditions.

  18. Annual report to the Advisory Council on Historic Preservation and the Colorado State Historic Preservation Officer on the US Department of Energy's cultural resource activities at Colorado UMTRA Project sites, January--December 1991. [Uranium Mill Tailings Remedial Action (UMTRA) Project

    SciTech Connect (OSTI)

    Not Available

    1992-04-01T23:59:59.000Z

    This report is a summary of the US Department of Energy's (DOE) cultural resource investigations for the Uranium Mill Tailings Remedial Action (UMTRA) Project sites in Colorado. This report is intended to fulfill the DOE's obligation for an annual report as stated in the Programmatic Memorandum of Agreement executed between the DOE, the Advisory Council on Historic Preservation, and the Colorado State Historic Preservation Officer in December 1984. Summaries of the cultural resource surveys and identified resources are provided for the UMTRA Project sites in the vicinities of Durango, Grand Junction, Gunnison, Maybell, Naturita, Rifle, and Slick Rock. This report covers all UMTRA Project cultural resource activities in Colorado from January through December 1991.

  19. Annual report to the Advisory Council on Historic Preservation and the Colorado State Historic Preservation Officer on the US Department of Energy`s cultural resource activities at Colorado UMTRA Project sites, January--December 1991

    SciTech Connect (OSTI)

    Not Available

    1992-04-01T23:59:59.000Z

    This report is a summary of the US Department of Energy`s (DOE) cultural resource investigations for the Uranium Mill Tailings Remedial Action (UMTRA) Project sites in Colorado. This report is intended to fulfill the DOE`s obligation for an annual report as stated in the Programmatic Memorandum of Agreement executed between the DOE, the Advisory Council on Historic Preservation, and the Colorado State Historic Preservation Officer in December 1984. Summaries of the cultural resource surveys and identified resources are provided for the UMTRA Project sites in the vicinities of Durango, Grand Junction, Gunnison, Maybell, Naturita, Rifle, and Slick Rock. This report covers all UMTRA Project cultural resource activities in Colorado from January through December 1991.

  20. City of Grand Junction, Iowa (Utility Company) | Open Energy Information

    Open Energy Info (EERE)

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  1. Grand Junction, Colorado: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

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  2. Grand Junction, Colorado, Processing Site and Disposal Sites Fact Sheet

    Office of Legacy Management (LM)

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  3. EIS-0126: Remedial Actions at the Former Climax Uranium Company Uranium Mill Site, Grand Junction, Mesa County, Colorado

    Broader source: Energy.gov [DOE]

    The U.S. Department of Energy developed this EIS to assess the environmental impacts of remediating the residual radioactive materials left from the inactive uranium processing site and associated properties located in Grand Junction, Colorado.

  4. National Uranium Resource Evaluation. Bibliographic index of Grand Junction office uranium reports

    SciTech Connect (OSTI)

    Johnson, J.B.

    1981-05-01T23:59:59.000Z

    In October 1978, Mesa College entered into subcontract with Bendix Field Engineering Corporation (BFEC) to prepare a bibliographic index of the uranium raw materials reports issued by the Grand Junction Office of the US Department of Energy (DOE). Bendix, prime contractor to the Grand Junction Office, operates the Technical Library at the DOE facility. Since the early 1950s, approximately 2700 reports have been issued by the Grand Junction Office. These reports were the results of uranium investigations conducted by federal agencies and their subcontractors. The majority of the reports cover geology, mineralogy, and metallurgy of uranium and/or thorium. No single, complete list of these reports existed. The purpose of this subcontract was to compile a comprehensive index to these reports. The Mesa College geology faculty worked with the BFEC and DOE staffs to develop the format for the index. Undergraduate geology students from Mesa compiled a master record sheet for each report. All reports issued up to January 1, 1979 were included in the bibliography. The bibliography is in preliminary, unedited form. It is being open-filed at this time, on microfiche, to make the information available to the public on a timely basis. The bibliography is divided into a master record list arranged in alpha-numeric order by report identification number, with separate indices arranged by title, author, state and county, 1/sup 0/ x 2/sup 0/ NTMS quadrangle, key words, and exploration area.

  5. Annual report on the U.S. Department of Energy`s Cultural Resource Activities at Colorado UMTRA Project Sites for October 1993 through September 1994

    SciTech Connect (OSTI)

    Not Available

    1994-11-01T23:59:59.000Z

    This report summarizes the results of cultural resource activities conducted by the U.S. Department of Energy (DOE) at Uranium Mill Tailings Remedial Action (UMTRA) Project sites in Colorado for the period of October 1, 1993, through September 30, 1994. The UMTRA Project is a cooperative (state and federal) program mandated by the Uranium Mill Tailings Radiation Control Act, Public Law 95-604 (42 USC {section}7901 et seq.). This law requires the timely cleanup of 24 inactive uranium mill tailings sites throughout the United States. Nine of these inactive uranium mill tailings sites are in Colorado at Durango, Grand Junction, Gunnison, Maybell, Naturita, Rifle, and Slick Rock. On December 6, 1984, the DOE, Advisory Council on Historic Preservation, and Colorado State Historic Preservation Officer (SHPO) entered into a programmatic memorandum of agreement (PMOA) (DOE, 1984). This PMOA specifies requirements for the DOE`s fulfillment of its obligations under various state and federal regulations for the protection and preservation of cultural resources. This report fulfills the requirement for the DOE to provide the state of Colorado with an annual report on the cultural resource activities performed for all of the UMTRA Project sites in Colorado. This report is organized by UMTRA Project site. For each site, the general remedial action activities and cultural resource activities performed during the period of record are summarized. When known, the DOE`s plans for future cultural resource activities at the site are summarized.

  6. Grand Junction Projects Office site environmental report for calendar year 1992

    SciTech Connect (OSTI)

    Not Available

    1993-05-01T23:59:59.000Z

    This report presents information pertaining to environmental activities conducted during calendar year 1992 at the US Department of Energy Grand Junction Projects Office (DOE-GJPO) facility in Colorado. Environmental activities conducted at the GJPO facility during 1992 included those associated with environmental compliance, site remediation, off-site dose modeling, and radiological and nonradiological monitoring. Four phases of the on-site Grand Junction Projects Office Remedial Action Project were completed in 1992. Remediation activities, which included the removal of 161,589 tons of uranium-mill-tailings-contaminated material from the facility, were conducted in compliance with all applicable permits. Off-site dose modeling for the GJPO was conducted to determine compliance with current National Emission Standards for Hazardous Air Pollutants, Subpart H, and applicable DOE Orders (5400.1 and 5400.5). The total off-site EDE to the public from all sources of radiation emanating from the facility (radon, air particulates, gamma) was calculated as 9 mrem/yr, which is well below the DOE dose limit of 100 mrem/yr above background. The radiological and nonradiological monitoring program at the GJPO facility included monitoring of activities that generate potentially hazardous or toxic wastes and monitoring of ambient air, surface water, and ground water.

  7. Lessons Learned: The Grand Junction Office Site Transfer to Private Ownership

    SciTech Connect (OSTI)

    none,

    2001-02-01T23:59:59.000Z

    The U.S. Department of Energy Grand Junction Office (DOE?GJO) in Grand Junction, Colorado, has played an integral role within the DOE complex for many years. GJO has a reputation for outstanding quality in the performance of complex environmental restoration projects, utilizing state-of-the-art technology. Many of the GJO missions have been completed in recent years. In 1998, DOE Headquarters directed GJO to reduce its mortgage costs by transferring ownership of the site and to lease space at a reasonable rate for its ongoing work. A local community group and GJO have entered into a sales contract; signing of the Quitclaim Deed is planned for February 16, 2001. Site transfer tasks were organized as a project with a critical-path schedule to track activities and a Site Transition Decision Plan was prepared that included a decision process flow chart, key tasks, and responsibilities. Specifically, GJO identified the end state with affected parties early on, successfully dealt with site contamination issues, and negotiated a lease-back arrangement, resulting in an estimated savings of more than 60 percent of facility maintenance costs annually. Lessons learned regarding these transition activities could be beneficial to many other sites.

  8. UMTRA Surface Project management action process document: Final. Revision 2

    SciTech Connect (OSTI)

    NONE

    1996-06-01T23:59:59.000Z

    Title 1 of the UMTRCA authorized the DOE to undertake remedial actions at these designed sites and associated vicinity properties (VP), which contain uranium mill tailings and other residual radioactive materials (RRM) derived from the processing sites. Title 2 of the UMTRCA addresses uranium mill sites that were licensed at the time the UMTRCA was enacted. Cleanup of these Title 2 sites is the responsibility of the licensees. The cleanup of the Title 1 sites has been split into two separate projects: the Surface Project, which deals with the mill buildings, tailings, and contaminated soils at the sites and VPs; and the Ground Water Project, which is limited to the contaminated ground water at the sites. This management action process (MAP) document discusses the Uranium Mill Tailings Remedial Action (UMTRA) Surface Project. Since its inception through March 1996, the Surface Project (hereinafter called the Project) has cleaned up 16 of the 24 designated processing sites and approximately 5,000 VPs, reducing the risk to human health and the environment posed by the uranium mill tailings. Two of the 24 sites, Belfield and Bowman, North Dakota, will not be remediated at the request of the state, reducing the total number of sites to 22. By the start of FY1998, the remaining 6 processing sites and associated VPs will be cleaned up. The remedial action activities to be funded in FY1998 by the FY1998 budget request are remediation of the remaining Grand Junction, Colorado, VPs; closure of the Cheney disposal cell in Grand Junction, Colorado; and preparation of the completion reports for 4 completed sites.

  9. Survey of Seeps and Springs within the Bureau of Land Management's Grand Junction Field Office Management Area

    E-Print Network [OSTI]

    Survey of Seeps and Springs within the Bureau of Land Management's Grand Junction Field Office Management Area (Mesa County, CO) Colorado Natural Heritage Program Colorado State University 8002 Campus Delivery Fort Collins, Colorado 80523-8002 #12;Survey of Seeps and Springs within the Bureau of Land

  10. Survey of Seeps and Springs within the Bureau of Land Management's Grand Junction Field Office Management Area

    E-Print Network [OSTI]

    Survey of Seeps and Springs within the Bureau of Land Management's Grand Junction Field Office Management Area (Garfield County, CO) Colorado Natural Heritage Program College of Natural Resources, 254 General Services Building Colorado State University Fort Collins, Colorado 80523 #12;Survey of Seeps

  11. Annual report on the U.S. Department of Energy`s cultural resource activities at Colorado UMTRA Project sites for October 1995--September 1996

    SciTech Connect (OSTI)

    NONE

    1996-09-01T23:59:59.000Z

    This report summarizes the results of cultural resource activities conducted by the U.S. Department of Energy (DOE) at Uranium Mill Tailings Remedial Action (UMTRA) Project sites in Colorado for the period of October 1, 1995 through September 30, 1996. The inactive uranium mill tailings sites in Colorado are at Durango, Grand Junction, Gunnison, Maybell, Naturita, Rifle, and Slick Rock. On December 6, 1984, the DOE, the Advisory Council on Historic Preservation, and the Colorado State Historic Preservation Officer (SHPO) entered into a programmatic memorandum of understanding (PMOU). This PMOU requires the DOE to fulfillment of its obligations under various state and federal regulations for the protection and preservation of cultural resources. This report provides the state of Colorado with an annual report on the cultural resource activities performed for all UMTRA Project sites in Colorado. Due to the completion of surface activities at the UMTRA Project sites, this will be the last annual report to the state of Colorado. Cultural resources activities subsequent to this report will be reported to the state through site-specific correspondence.

  12. Final report of the decontamination and decommissioning of the exterior land areas at the Grand Junction Projects Office facility

    SciTech Connect (OSTI)

    Widdop, M.R.

    1995-09-01T23:59:59.000Z

    The US Department of Energy (DOE) Grand Junction Projects Office (GJPO) facility occupies approximately 56.4 acres (22.8 hectares) along the Gunnison River near Grand Junction, Colorado. The site was contaminated with uranium ore and mill tailings during uranium-refining activities conducted by the Manhattan Engineer District and during pilot-milling experiments conducted for the US Atomic Energy Commission`s (AEC`s) domestic uranium procurement program. The GJPO facility was the collection and assay point for AEC uranium and vanadium oxide purchases until the early 1970s. The DOE Decontamination and Decommissioning Program sponsored the Grand Junction Projects Office Remedial Action Project (GJPORAP) to remediate the facility lands, site improvements, and the underlying aquifer. The site contractor, Rust Geotech, was the Remedial Action Contractor for GJPORAP. The exterior land areas of the facility assessed as contaminated have been remediated in accordance with identified standards and can be released for unrestricted use. Restoration of the aquifer will be accomplished through the natural flushing action of the aquifer during the next 50 to 80 years. The remediation of the DOE-GJPO facility buildings is ongoing and will be described in a separate report.

  13. U.S. Department of Energy Grand Junction Projects Office site environmental report for calendar year 1995

    SciTech Connect (OSTI)

    NONE

    1996-05-01T23:59:59.000Z

    This report presents information pertaining to environmental activities conducted during calendar year 1995 at the US Department of Energy (DOE) Grand Junction Projects Office (GJPO) facility in Grand Junction, Colorado. Environmental activities conducted at the GJPO facility during 1995 were associated with mixed-waste treatment, site remediation, off-site dose modeling, and radiological and nonradiological monitoring. As part of the GJPO Mixed-Waste Treatment Program, on-site treatability studies were conducted in 1995 that made use of pilot-scale evaporative-oxidation and thermal-desorption units and bench-scale stabilization. DOE-GJPO used some of its own mixed-waste as well as samples received from other DOE sites for these treatability studies. These studies are expected to conclude in 1996. Removal of radiologically contaminated materials from GJPO facility buildings was conducted under the provisions of the Grand Junction Projects Office Remedial Action Project. Remediation activities included the removal of 394 metric tons of contaminated material from Buildings 18 and 28 and revegetation activities on the GJPO site; remediation was conducted in compliance with applicable permits.

  14. UMTRA Project value engineering plan

    SciTech Connect (OSTI)

    Not Available

    1990-06-01T23:59:59.000Z

    The objective of value engineering (VE) on the Uranium MILL Tailings Remedial Action (UMTRA) Project is to ensure that remedial action at the UMTRA Project sites is performed to meet the US Environmental Protection Agency (EPA) standards for inactive uranium mill tailings sites at the lowest cost, while maintaining a high quality of work. Through review of designs and consideration of reasonable, less expensive alternatives, VE can be an effective cost reduction tool and a means to improve the design. The UMTRA Project products are the design and construction of stabilized tailings embankments.

  15. Grande

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    breaks ground on key sediment control project November 5, 2009 Structures will limit flow of sediments toward Rio Grande Los Alamos, New Mexico, November 5, 2009- Crews broke...

  16. Annual report on the US Department of Energy`s cultural resource activities at Colorado UMTRA Project sites for October 1991--September 1992

    SciTech Connect (OSTI)

    Not Available

    1993-10-06T23:59:59.000Z

    This report summarizes the US Department of Energy`s (DOE) cultural resource studies that were undertaken in support of the DOE`s Uranium Mill Tailings Remedial Action (UMTRA) Project in the state of Colorado for the period of October 1, 1991, through September 30, 1992. This report fulfills the DOE`s obligation to provide an annual report to the state of Colorado on the status and results of cultural resource studies conducted during the above period of record. This requirement is stated in a programmatic memorandum of agreement executed between the DOE, the Advisory Council on Historic Preservation, and the Colorado State Historic Preservation Officer in December 1984. Previous reports were based on a calendar year reporting period. However, in order to be more consistent with the programmatic memorandum of agreement, the period of record for this and subsequent annual reports has been changed to the Federal fiscal year. The current status and summaries of 1992 cultural resource surveys are provided for all UMTRA Project sites in Colorado. The sites are Durango, Grand Junction, Gunnison, Maybell, Naturita, Rifle, and Slick Rock.

  17. UMTRA Project document control system manual

    SciTech Connect (OSTI)

    Not Available

    1994-09-01T23:59:59.000Z

    This manual defines the Project Document Control System (PDCS) operated by the US DOE Uranium Mill tailings Remedial Action (UMTRA) project Office. The purpose of the PDCS is to provide an active and continuing program for acquiring, controlling, retaining, retrieving, retiring and disposing of all UMTRA Project documents. The PDCS also provides guidance and coordination in transferring documents by various UMTRA Projection document control centers to a central location.

  18. Baseline risk assessment of ground water contamination at the Uranium Mill Tailings Site at Grand Junction, Colorado. Revision 1

    SciTech Connect (OSTI)

    Not Available

    1994-09-01T23:59:59.000Z

    This risk assessment evaluates potential impacts to public health or the environment resulting from ground water contamination at the former uranium mill processing site. The tailings and other contaminated material at this site were placed in an off-site disposal cell by the US Department of Energy`s (DOE) Uranium Mill Tailings Remedial Action (UMTRA) Project. The remedial activities at the site were conducted from 1989 to 1993. Currently, the UMTRA Project is evaluating ground water contamination. This risk assessment evaluates the most contaminated ground water that flows beneath the processing site toward the Colorado River. The monitor wells that have consistently shown the highest concentrations of most contaminants are used to assess risk. This risk assessment will be used in conjunction with additional activities and documents to determine what remedial action may be needed for contaminated ground water at the site.

  19. Grand Junction, Colorado, Disposal Site Long-Term Surveillance and Maintenance Program Fact Sheet, July 2001

    Office of Legacy Management (LM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOn AprilA group currentBradleyTableSelling CorpNewCF INDUSTRIES,L? . -. .- *' *---: .;Grand

  20. U.S. Department of Energy at Grand Junction 2003 Annual Inspection⎯Monticello, Utah

    Office of Legacy Management (LM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOn AprilA groupTuba City, Arizona, DisposalFourthN V O'1repositoryShiprock,at Grand

  1. UMTRA Project: Environment, Safety, and Health Plan

    SciTech Connect (OSTI)

    Not Available

    1995-02-01T23:59:59.000Z

    The US Department of Energy has prepared this UMTRA Project Environment, Safety, and Health (ES and H) Plan to establish the policy, implementing requirements, and guidance for the UMTRA Project. The requirements and guidance identified in this plan are designed to provide technical direction to UMTRA Project contractors to assist in the development and implementation of their ES and H plans and programs for UMTRA Project work activities. Specific requirements set forth in this UMTRA Project ES and H Plan are intended to provide uniformity to the UMTRA Project`s ES and H programs for processing sites, disposal sites, and vicinity properties. In all cases, this UMTRA Project ES and H Plan is intended to be consistent with applicable standards and regulations and to provide guidance that is generic in nature and will allow for contractors` evaluation of site or contract-specific ES and H conditions. This plan specifies the basic ES and H requirements applicable to UMTRA Project ES and H programs and delineates responsibilities for carrying out this plan. DOE and contractor ES and H personnel are expected to exercise professional judgment and apply a graded approach when interpreting these guidelines, based on the risk of operations.

  2. Public participation in UMTRA Project program management

    SciTech Connect (OSTI)

    Majors, M.J.; Ulland, L.M. [Weston (Roy F.), Inc., Albuquerque, NM (United States)

    1993-12-31T23:59:59.000Z

    Innovative techniques for overcoming barriers to public participation on the US Department of Energy`s Uranium Mill Tailings Remedial Action (UMTRA) Project have led to improved communications with stakeholders at project sites and improved communications within the project. On the UMTRA Project, it`s been shown that an effective public participation program is an essential element to successful project implementation.

  3. Confirmatory radiological survey of the Grand Junction Projects Office Remedial Action Project exterior portions, 1989-1995

    SciTech Connect (OSTI)

    Forbes, G.H.; Egidi, P.V.

    1997-04-01T23:59:59.000Z

    The purpose of this independent assessment was to provide the U.S. Department of Energy (DOE) with an independent verification (IV) that the soil at the Grand Junction Projects Office (GJPO) complies with applicable DOE guidelines. Oak Ridge National Laboratory/ Environmental Technology Section (ORNL/ETS) which is also located at the GJPO, was assigned by DOE as the Independent Verification Contractor (IVC). The assessment included reviews of the decontamination and decommissioning plan, annual environmental monitoring reports, data in the pre- and post-remedial action reports, reassessment reports and IV surveys. Procedures and field methods used during the remediation were reviewed, commented on, and amended as needed. The IV surveys included beta-gamma and gamma radiation scans, soil sampling and analyses. Based on the data presented in the post-remedial action report and the results of the IV surveys, the remediation of the outdoor portions of the GJPO has achieved the objectives. Residual deposits of uranium contamination may exist under asphalt because the original characterization was not designed to identify uranium and subsequent investigations were limited. The IVC recommends that this be addressed with the additional remediation. The IVC is working with the remedial action contractor (RAC) to assure that final documentation WM be sufficient for certification. The IVC will address additional remediation of buildings, associated utilities, and groundwater in separate reports. Therefore, this is considered a partial verification.

  4. Work plan for phase 1A paleochannel studies at the Cheney disposal cell, Grand Junction, Colorado: Draft

    SciTech Connect (OSTI)

    NONE

    1996-11-01T23:59:59.000Z

    This document will serve as a Work Plan for continuing paleochannel characterization activities at the Cheney disposal site near Grand Junction, Colorado. Elevated levels of nitrate were encountered in ground water from two monitor wells installed in alluvial paleochannels near the Cheney disposal cell in 1994. This triggered a series of investigations (Phase 1) designed to determine the source of nitrate and other chemical constituents in ground water at the site. A comprehensive summary of the Phase 1 field investigations (limited to passive monitoring and modeling studies) conducted by the Remedial Action Contractor (RAC) and Technical Assistance Contractor (TAC) to date is provided in Section 2.0 of this document. Results of Phase 1 were inconclusive regarding the potential interaction between the disposal cell and the paleochannels, so additional Phase 1A investigations are planned. Recommendations for Phase 1A tasks and possible future activities are discussed in Section 3.0. Detailed information on the implementation of the proposed Phase 1A tasks appears in Section 4.0 and will provide the basis for Statements of Work (SOW) for each of these tasks. A detailed sampling plan is provided to ensure quality and a consistency with previous data collection efforts.

  5. Uranium Mill Tailings Remedial Action (UMTRA) Project. [UMTRA project

    SciTech Connect (OSTI)

    Not Available

    1989-09-01T23:59:59.000Z

    The mission of the Uranium Mill Tailings Remedial Action (UMTRA) Project is explicitly stated and directed in the Uranium Mill Tailings Radiation Control Act of 1978, hereinafter referred to as the Act.'' Title I of the Act authorizes the Department of Energy (DOE) to undertake remedial action at designated inactive uranium processing sites (Attachment 1 and 2) and associated vicinity properties containing uranium mill tailings and other residual radioactive materials derived from the processing site. The purpose of the remedial actions is to stabilize and control such uranium mill tailings and other residual radioactive materials in a safe and environmentally sound manner to minimize radiation health hazards to the public. The principal health hazards and environmental concerns are: the inhalation of air particulates contaminated as a result of the emanation of radon from the tailings piles and the subsequent decay of radon daughters; and the contamination of surface and groundwaters with radionuclides or other chemically toxic materials. This UMTRA Project Plan identifies the mission and objectives of the project, outlines the technical and managerial approach for achieving them, and summarizes the performance, cost, and schedule baselines which have been established to guide operational activity. Estimated cost increases by 15 percent, or if the schedule slips by six months. 4 refs.

  6. UMTRA project list of reportable occurrences

    SciTech Connect (OSTI)

    Not Available

    1994-04-01T23:59:59.000Z

    This UMTRA Project List of Reportable occurrences is provided to facilitate efficient categorization of reportable occurrences. These guidelines have been established in compliance with DOE minimum reporting requirements under DOE Order 5000.3B. Occurrences are arranged into nine groups relating to US Department of Energy (DOE) Uranium Mill Tailings Remedial Action (UMTRA) Project operations for active sites. These nine groupings are provided for reference to determined whether an occurrence meets reporting requirement criteria in accordance with the minimum reporting requirements. Event groups and significance categories that cannot or will not occur, and that do not apply to UMTRA Project operations, are omitted. Occurrence categorization shall be as follows: Group 1. Facility Condition; Group 2. Environmental; Group 3. Personnel Safety; Group 4. Personnel Radiation Protection; Group 5. Safeguards and Security; Group 6. Transportation; Group 7. Value Basis Reporting; Group 8. Facility Status; and Group 9. Cross-Category Items.

  7. UMTRA Project Office Records Management Plan

    SciTech Connect (OSTI)

    Not Available

    1993-06-01T23:59:59.000Z

    The Uranium Mill Tailings Remedial Action (UMTRA) Project Office maintains two distinct records handling areas. One of the areas is maintained by a Technical Assistance Contractor (TAC), and is referred to as the UMTRA Project Document Control Center (UPDCC). The UPDCC manages all UMTRA records except those dealing with contracts, personnel, budgeting, finance, and any other documents which are of a purely administrative nature. The second area, the UMTRA Project Administrative Files Collection (UPAFC), contains all those records listed above that are not managed by the UPDCC. This Records Management Plan (RMP) for the UPAFC will be the framework for identifying the elements and activities that relate to the management and operational aspects involved in the handling of UPAFC. Guidelines for the program will be obtained from US Department of Energy (DOE) Orders. DOE Orders implement the guidelines issued by the National Archives and Records Administration (NARA), the final authority for records management. The RMP will address the life cycle of records, including their creation, maintenance, use, and disposition.

  8. Environmental Assessment and Finding of No Significant Impact: Transfer of the Department of Energy Grand Junction Office to Non-DOE Ownership

    SciTech Connect (OSTI)

    N /A

    2000-04-25T23:59:59.000Z

    The scope of this environmental assessment (EA) is to analyze the potential consequences of the Proposed Action on human health and the environment. Accordingly, this EA contains an introduction to the site and the history of the Grand Junction Office (Chapter One), a description of the Purpose and Need for Agency Action (Chapter Two), a description of the Proposed Action and Alternatives (Chapter Three), and the description of the Affected Environment and the Environmental Consequences (Chapter Four). Resource categories addressed in this EA include geology, soils and topography, groundwater and surface water, floodplains and wetlands, land use and infrastructure, human health, ecological resources, cultural resources, air quality, noise, visual resources, solid and hazardous waste management, transportation, and socioeconomic and environmental justice.

  9. Remedial actions at the former Climax Uranium Company, Uranium Mill site, Grand Junction, Mesa County, Colorado. Volume 1, Text: Final environmental impact statement

    SciTech Connect (OSTI)

    None

    1986-12-01T23:59:59.000Z

    This statement evaluates and compares the environmental impacts associated with the remedial actions of the residual radioactive materials remaining at the inactive uranium processing site and associated vicinity properties at Grand Junction, Mesa County, Colorado. This statement is also intended to aid the BLM in amending their management framework plans and final resource management plan, as well as assisting in compliance with the withdrawal application as appropriate. The site is a 114-acre tract of private and state owned land which contains approximately 3.1 million cubic yards of tailings and associated contaminated soils. The vicinity properties are homes, businesses, public buildings, and vacant lots which may have been contaminated during construction by the use of tailings as building material. An estimated 3465 vicinity properties would be cleaned up during remedial action of the tailings pile. The tailings were produced by the former Climax Uranium Company which processed uranium ore, which it sold to the US Atomic Energy Commission from 1951 to 1966 and to private sources from 1966 to 1970. This statement evaluates six alternatives for stabilization and disposal of the tailings and other contaminated materials: (1) No action. (2) Stabilization at the Grand Junction site. (3) Disposal at the Cheney Reservoir site with truck transport. (4) Disposal at the Cheney Reservoir site with train and truck transport. (5) Disposal at the Two Road site with truck transport. (6) Disposal at the Two Road site with train and truck transport. All of the alternatives except no action include remedial action at an estimated 3465 vicinity properties. Alternative 3 is DOE`s preferred alternative.

  10. Lessons learned on the UMTRA Project

    SciTech Connect (OSTI)

    Not Available

    1991-02-01T23:59:59.000Z

    This report has been compiled as part of the Technical Assistance Contractor's (TAC's) continuing efforts to improve the quality of its product to the US Department of Energy (DOE), and to reduce the costswhile maintaining a standard of excellence on the Uranium Mill Tailings Remedial Action (UMTRA) Project. The report documents the lessons learned and the steps taken to benefit the project as a result. This study has multiple objectives, which fall under the following hierarchy: To examine and evaluate past successes and mistakes. To provide a record of lessons learned for the benefit and orientation of future staffmembers. To identify shortcomings of, and desired improvements to, current UMTRA Project practices and procedures. To establish a means for the future review and dissemination of lessons learned.

  11. German engineers study UMTRA cleanup programs

    SciTech Connect (OSTI)

    Not Available

    1994-01-01T23:59:59.000Z

    Two environmental engineers from Germany's WISMUT, the organization responsible for uranium tailings cleanup in that country, recently completed extensive training as part of a technology transfer program at the US DOE. For six weeks the two engineers studied the practices employed in the cleanup of the DOE's UMTRA (Uranium Mill Tailings Remedial Action) sites, hoping to gain insight into how Germany's own cleanup program should proceed.

  12. Licensing plan for UMTRA project disposal sites. Final [report

    SciTech Connect (OSTI)

    Not Available

    1993-09-01T23:59:59.000Z

    The Uranium Mill Tailings Remedial Action (UMTRA) Project Office developed a plan to define UMTRA Project licensing program objectives and establish a process enabling the DOE to document completion of remedial actions in compliance with 40 CFR 1 92 and the requirements of the NRC general license. This document supersedes the January 1987 Project Licensing Plan (DOE, 1987). The plan summarizes the legislative and regulatory basis for licensing, identifies participating agencies and their roles and responsibilities, defines key activities and milestones in the licensing process, and details the coordination of these activities. This plan provides an overview of the UMTRA Project from the end of remedial actions through the NRC`s acceptance of a disposal site under the general license. The licensing process integrates large phases of the UMTRA Project. Other programmatic UMTRA Project documents listed in Section 6.0 provide supporting information.

  13. ERD UMTRA Project quality assurance program plan, Revision 7

    SciTech Connect (OSTI)

    NONE

    1995-09-01T23:59:59.000Z

    This document is the revised Quality Assurance Program Plan (QAPP) dated September, 1995 for the Environmental Restoration Division (ERD) Uranium Mill Tailings Remedial Action Project (UMTRA). Quality Assurance requirements for the ERD UMTRA Project are based on the criteria outlined in DOE Order 5700.6C or applicable sections of 10 CFR 830.120. QA requirements contained in this QAPP shall apply to all personnel, processes, and activities, including planning, scheduling, and cost control, performed by the ERD UMTRA Project and its contractors.

  14. UMTRA Project Office quality assurance program plan. Revision 6

    SciTech Connect (OSTI)

    Not Available

    1994-09-01T23:59:59.000Z

    The Uranium Mill Tailings Remedial Action (UMTRA) Project was established to accomplish remedial actions at inactive uranium mill tailings sites. The UMTRA Project`s mission is to stabilize and control the residual radioactive materials at designated sites in a safe and environmentally sound manner so as to minimize or eliminate radiation health hazards to the public. Because these efforts may involve possible risks to public health and safety, a quality assurance (QA) program that conforms to the applicable criteria has been established to control the quality of the work. This document, the Quality Assurance Program Plan (QAPP), brings into one document the essential criteria to be applied on a selective basis, depending upon the nature of the activity being conducted, and describes how those criteria shall be applied to the UMTRA Project. QA requirements contained in this QAPP shall apply to all personnel, processes, and activities, including planning, scheduling, and cost control, performed by the UMTRA Project Office and its contractors.

  15. The UMTRA PEIS: A strategy for groundwater remediation

    SciTech Connect (OSTI)

    Burt, C.; Ulland, L.; Weston, R.F.; Metzler, D. (DOE, Albuquerque, NM (United States))

    1993-01-01T23:59:59.000Z

    A programmatic environmental impact statement (PEIS) was initiated in 1992 for the uranium mill tailings remedial action (UMTRA) program. The PEIS kicked off the groundwater restoration phase of UMTRA, a project involving remediation of 24 sites in ten states and tribal lands contaminated with tailings from uranium mining and milling operations. The U.S. Department of Energy (DOE) agreed, in early 1992, that a PEIS was an appropriate strategy to comply with the National Environmental Policy Act (NEPA) for this second, groundwater phase of the project. This decision recognized that although a parallel effort was being undertaken in preparing a PEIS for DOE's Environmental Restoration/Waste Management (ER/WM) program, characteristics and the maturity of the UMTRA project made it more appropriate to prepare a separate PEIS. The ER/WM PEIS is intended to examine environmental restoration and waste management issues from a very broad perspective. For UMTRA, with surface remediation completed or well under way at 18 of the 24 sites, a more focused programmatic approach for groundwater restoration is more effective than including the UMTRA project within the ER/WM environmental impact statements. A separate document allows a more focused and detailed analysis necessary to efficiently tier site-specific environmental assessments for groundwater restoration at each of the 24 UMTRA former processing sites.

  16. UMTRA Project Office Quality Assurance Program Plan. Revision 5

    SciTech Connect (OSTI)

    Not Available

    1993-11-01T23:59:59.000Z

    The Uranium Mill Tailings Remedial Action (UMTRA) Project was established to accomplish remedial actions at inactive uranium mill tailings sites in accordance with Public Law 95-604, the Uranium Mill Tailings Radiation Control Act of 1978 (UMTRCA). The UMTRA Project`s mission is to stabilize and control the residual radioactive materials at designated sites in a safe and environmentally sound manner so as to minimize or eliminate radiation health hazards to the public. The US Department of Energy (DOE) UMTRA Project Office directs the overall Project. Because these efforts may involve possible risks to public health and safety, a quality assurance (QA) program that conforms to the applicable criteria (set forth in the reference documents) has been established to control the quality of the work. This document, the Quality Assurance Program Plan (QAPP), brings into one document the essential criteria to be applied on a selective basis, depending upon the nature of the activity being conducted, and describes how those criteria shall be applied to the UMTRA Project. The UMTRA Project Office shall require each Project contractor to prepare and submit for approval a more detailed QAPP that is based on the applicable criteria of this QAPP and the referenced documents. All QAPPs on the UMTRA Project shall fit within the framework of this plan or an industry standard format that has been approved by the DOE Project Office.

  17. Policy and procedures for classification of Class III groundwater at UMTRA Project sites. [Uranium Mill Tailings Remedial Action (UMTRA) Project

    SciTech Connect (OSTI)

    Not Available

    1989-03-01T23:59:59.000Z

    The US Environmental Protection Agency (EPA) has recently proposed groundwater regulations for the US Department of Energy's )DOE) Uranium Mill Tailings Remedial Action (UMTRA) Project. These regulations allow the application of supplemental standards at UMTRA Project sites in specific situations. The designation of groundwater as Class III permits the application of supplemental standards. This document discusses a final UMTRA Project policy and procedures for identifying Class III groundwater, including identification of a review area, definition of water quality, quantification of aquifer yield, and identification of methods reasonably employed for public water supply systems. These items, either individually or collectively, need to be investigated in order to determine if groundwaters at UMTRA Project sites are Class III. This document provides a framework for the DOE to determine Class III groundwaters.

  18. UMTRA (Uranium Mill Tailings Remedial Action) Project site management manual

    SciTech Connect (OSTI)

    Not Available

    1990-10-01T23:59:59.000Z

    The purpose of this manual is to summarize the organizational interfaces and the technical approach used to manage the planning, design development, National Environmental Policy Act (NEPA) compliance, engineering, and remedial action required to stabilize and control the designated Uranium Mill Tailings Remedial Action (UMTRA) Project sites. This manual describes the Project's objective, participants' roles and responsibilities, technical approach for accomplishing the objective, and planning and managerial controls to be used in performing the site work. The narrative follows the flow of activities depicted in Figure 1.1, which provides the typical sequence of key Project activities. A list of acronyms used is presented at the end of the manual. The comparable manual for UMTRA Project vicinity properties is the Vicinity Properties Management and Implementation Manual'' (VPMIM) (UMTRA-DOE/AL-050601). Together, the two manuals cover the remedial action activities associated with UMTRA Project sites. The UMTRA Project's objective is to stabilize and control the uranium mill tailings, vicinity property materials, and other residual radioactive materials at the designated sites (Figure 1.2) in a safe and environmentally sound manner in order to minimize radiation health hazards to the public. 26 figs., 6 tabs.

  19. UMTRA project technical assistance contractor quality assurance implementation plan

    SciTech Connect (OSTI)

    Not Available

    1994-03-01T23:59:59.000Z

    The Uranium Mill Tailings Remedial Action (UMTRA) Project Technical Assistance contractor (TAC) Quality Assurance Implementation Plan (QAIP) outlines the primary requirements for integrating quality functions for TAC technical activities applied to the surface and ground water phases of the UMTRA Project. The QAIP is subordinate to the latest issue of the UMTRA Project TAC Quality Assurance Program Plan (QAPP) (DOE, 1993a), which was developed using US Department of Energy (DOE) Order 5700.6C quality assurance (QA) criteria. The QAIP addresses technical aspects of the TAC UMTRA Project surface and ground water programs. All QA issues in the QAIP shall comply with requirements contained in the TAC QAPP (DOE, 1933a). Because industry standards for data acquisition and data control are not addressed in DOE Order 5700.6C, the QAIP has been formatted to the 14 US Environmental Protection Agency (EPA) Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) QA requirements. DOE Order 5700.6C criteria that are not contained in the CERCLA requirements are added to the QAIP as additional requirements in Sections 15.0 through 18.0. Project documents that contain CERCLA requirements and 5700.6 criteria shall be referenced in this document to avoid duplication. Referenced documents are not included in this QAIP but are available through the UMTRA Project Document Control Center.

  20. UMTRA project water sampling and analysis plan, Tuba City, Arizona

    SciTech Connect (OSTI)

    NONE

    1996-02-01T23:59:59.000Z

    Planned, routine ground water sampling activities at the U.S. Department of Energy (DOE) Uranium Mill Tailings Remedial Action (UMTRA) Project site in Tuba City, Arizona, are described in the following sections of this water sampling and analysis plan (WSAP). This plan identifies and justifies the sampling locations, analytical parameters, detection limits, and sampling frequency for the stations routinely monitored at the site. The ground water data are used for site characterization and risk assessment. The regulatory basis for routine ground water monitoring at UMTRA Project sites is derived from the U.S. Environmental Protection Agency (EPA) regulations in 40 CFR Part 192 (1994) and the final EPA standards of 1995 (60 FR 2854). Sampling procedures are guided by the UMTRA Project standard operating procedures (SOP) (JEG, n.d.), and the most effective technical approach for the site.

  1. UMTRA Project Office Federal Employee Occupational Safety and Health Program Plan. Final draft

    SciTech Connect (OSTI)

    Young, B.H.

    1994-02-01T23:59:59.000Z

    This document establishes the Federal Employee Occupational Safety and Health (FEOSH) Program for the US Department of Energy (DOE) Uranium Mill Tailings Remedial Action (UMTRA) Project Office. This program will ensure compliance with the applicable requirements of DOE Order 3790.1 B and DOE Albuquerque Operations Office (AL) Order 3790.1A. FEOSH Program responsibilities delegated by the DOE-AL to the UMTRA Project Office by AL Order 3790.1A also are assigned. The UMTRA Project Office has developed the UMTRA Project Environmental, Safety, and Health (ES&H) Plan (DOE, 1992), which establishes the basic programmatic ES&H requirements for all participants on the UMTRA Project. The ES&H plan is designed primarily to cover remedial action activities at UMTRA sites, and defines the ES&H responsibilities of both the UMTRA Project Office and its contractors. The UMTRA FEOSH Program described herein is a subset of the overall UMTRA ES&H program and covers only the federal employees working on the UMTRA Project.

  2. UMTRA project office federal employee occupational safety and health program plan. Revision 1

    SciTech Connect (OSTI)

    Not Available

    1994-06-01T23:59:59.000Z

    This document establishes the Federal Employee Occupational Safety and Health (FEOSH) Program for the US Department of Energy (DOE) Uranium Mill Tailings Remedial Action (UMTRA) Project Office. This program will ensure compliance with applicable requirements of DOE Order 3790.1B and DOE Albuquerque Operations Office (AL) Order 3790.lA. FEOSH Program responsibilities delegated by the DOE-AL to the UMTRA Project Office by AL Order 3790.1A also are assigned. The UMTRA Project Office has developed the UMTRA Project Environmental, Safety, and Health (ES&H) Plan (DOE, 1992), which establishes the basic programmatic ES&H requirements for all participants on the UMTRA Project. The ES&H plan is designed primarily to cover remedial action activities at UMTRA sites and defines the ES&H responsibilities of both the UMTRA Project Office and its contractors. The UMTRA FEOSH Program described herein is a subset of the overall UMTRA ES&H program and covers only federal employees working on the UMTRA Project.

  3. DOE plan for UMTRA Project water protection standards

    SciTech Connect (OSTI)

    Not Available

    1986-07-01T23:59:59.000Z

    This plan was developed to define DOE`s implementation of water protection standards for the UMTRA Project, on an interim basis, until the EPA promulgates revised standards in response to the September, 1985, decision by the Tenth Circuit Court of Appeals. This plan presents the historical background of the development of the Title I standards and the rationale for the DOE implementation approach.

  4. action umtra site: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    action umtra site First Page Previous Page 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Next Page Last Page Topic Index 1 Site Action Plan CiteSeer Summary:...

  5. DOE plan for UMTRA Project water protection standards

    SciTech Connect (OSTI)

    Not Available

    1986-07-01T23:59:59.000Z

    This plan was developed to define DOE's implementation of water protection standards for the UMTRA Project, on an interim basis, until the EPA promulgates revised standards in response to the September, 1985, decision by the Tenth Circuit Court of Appeals. This plan presents the historical background of the development of the Title I standards and the rationale for the DOE implementation approach.

  6. action umtra project: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    umtra project First Page Previous Page 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Next Page Last Page Topic Index 1 CIMI PROJECT DISSEMINATION ACTIONS...

  7. Review and analysis of proposed EPA groundwater standards for the UMTRA Project. [Uranium Mill Tailings Remedial Action (UMTRA) Project

    SciTech Connect (OSTI)

    Not Available

    1987-10-01T23:59:59.000Z

    The Title I groundwater standards for inactive uranium mill tailings sites, which were promulgated on January 5, 1983, by the US Environmental Protection Agency (EPA) for the Uranium Mill Tailings Remedial Action (UMTRA) Project, were remanded to the EPA on September 3, 1985, by the US Tenth Circuit Court of Appeals. The Court instructed the EPA to compile general groundwater standards for all sites. On September 24, 1987, the EPA published proposed standards in response to the remand. This Summary Report includes an evaluation of the potential effects of the proposed EPA groundwater standards on the UMTRA Project as well as a discussion of the DOE's position on the proposed standards. This report is accompanied by a detailed Technical Report and Appendices which provide supporting information and analyses. This Summary Report results from a study undertaken to: determine the impact of the proposed standards on the UMTRA Project; and recommend provisions for the implementation of the final standards that will minimize adverse impact to the conduct of the UMTRA Project while ensuring protection of human health and the environment. Specifically, the following were considered: the flexibility of the proposed standards; interpretations of the proposed standards; the extent of aquifer restoration that may be required to implement the proposed standards at each site; the costs of aquifer restoration; and design changes necessary to meet the standards.

  8. UMTRA Project-Level Cost Reduction/Productivity Improvement Program manual

    SciTech Connect (OSTI)

    NONE

    1995-06-01T23:59:59.000Z

    Mission of the Uranium Mill Tailings Remedial Action (UMTRA) Project Cost Reduction/Productivity Improvement Program (CR/PIP) is to contribute to the UMTRA Project`s environmental restoration mission by providing the means to achieve and recognize continuous improvements and cost savings. This manual includes program definition, description of UMTRA project organizational responsibilities and interfaces with existing project functions, guidance to contractors, and definition of project-level functions.

  9. Procedures for preparation, printing, and distribution of UMTRA Project National Environmental Policy Act documents

    SciTech Connect (OSTI)

    Not Available

    1988-08-01T23:59:59.000Z

    This paper discusses the procedures for preparation, printing and distribution of Uranium Mill Tailings Remedial Action (UMTRA) Project National Environmental Policy Act documents. (KJD)

  10. UMTRA project technical assistance contractor quality assurance implementation plan for surface and ground water, Revision 2

    SciTech Connect (OSTI)

    NONE

    1995-11-01T23:59:59.000Z

    This document contains the Technical Assistance Contractor (TAC) Quality Assurance Implementation Plan (QAIP) for the Uranium Mill Tailings Remedial Action (UMTRA) Project. The QAIP outlines the primary requirements for integrating quality functions for TAC technical activities applied to the surface and ground water phases of the UMTRA Project. The QA program is designed to use monitoring, audit, and surveillance activities as management tools to ensure that UMTRA Project activities are carried out in amanner to protect public health and safety, promote the success of the UMTRA Project, and meet or exceed contract requirements.

  11. UMTRA project water sampling and analysis plan, Maybell, Colorado

    SciTech Connect (OSTI)

    Not Available

    1994-06-01T23:59:59.000Z

    This water sampling and analysis plan (WSAP) describes planned water sampling activities and provides the regulatory and technical basis for ground water sampling in 1994 at the US Department of Energy`s (DOE) Uranium Mill Tailings Remedial Action (UMTRA) Project site in Maybell, Colorado. The WSAP identifies and justifies sampling locations, analytical parameters, and sampling frequencies at the site. The ground water data will be used for site characterization and risk assessment. The regulatory basis for the ground water and surface water monitoring activities is derived from the EPA regulations in 40 CFR Part 192 (1993) and the proposed EPA standards of 1987 (52 FR 36000). Sampling procedures are guided by the UMTRA Project standard operating procedures (SOP) (JEG, n.d.), the Technical Approach Document (TAD) (DOE, 1989), and the most effective technical approach for the site. This WSAP also includes a summary and the results of water sampling activities from 1989 through 1992 (no sampling was performed in 1993).

  12. Lessons learned on the UMTRA Project. Special study

    SciTech Connect (OSTI)

    Not Available

    1991-02-01T23:59:59.000Z

    This report has been compiled as part of the Technical Assistance Contractor`s (TAC`s) continuing efforts to improve the quality of its product to the US Department of Energy (DOE), and to reduce the costswhile maintaining a standard of excellence on the Uranium Mill Tailings Remedial Action (UMTRA) Project. The report documents the lessons learned and the steps taken to benefit the project as a result. This study has multiple objectives, which fall under the following hierarchy: To examine and evaluate past successes and mistakes. To provide a record of lessons learned for the benefit and orientation of future staffmembers. To identify shortcomings of, and desired improvements to, current UMTRA Project practices and procedures. To establish a means for the future review and dissemination of lessons learned.

  13. UMTRA project water sampling and analysis plan -- Shiprock, New Mexico

    SciTech Connect (OSTI)

    Not Available

    1994-02-01T23:59:59.000Z

    Water sampling and analysis plan (WSAP) is required for each U.S. Department of Energy (DOE) Uranium Mill Tailings Remedial Action (UMTRA) Project site to provide a basis for ground water and surface water sampling at disposal and former processing sites. This WSAP identifies and justifies the sampling locations, analytical parameters, detection limits, and sampling frequency for the monitoring stations at the Navaho Reservation in Shiprock, New Mexico, UMTRA Project site. The purposes of the water sampling at Shiprock for fiscal year (FY) 1994 are to (1) collect water quality data at new monitoring locations in order to build a defensible statistical data base, (2) monitor plume movement on the terrace and floodplain, and (3) monitor the impact of alluvial ground water discharge into the San Juan River. The third activity is important because the community of Shiprock withdraws water from the San Juan River directly across from the contaminated alluvial floodplain below the abandoned uranium mill tailings processing site.

  14. UMTRA project disposal cell cover biointrusion sensitivity assessment, Revision 1

    SciTech Connect (OSTI)

    NONE

    1995-10-01T23:59:59.000Z

    This study provides an analysis of potential changes that may take place in a Uranium Mill Tailings Remedial Action (UMTRA) Project disposal cell cover system as a result of plant biointrusion. Potential changes are evaluated by performing a sensitivity analysis of the relative impact of root penetrations on radon flux out of the cell cover and/or water infiltration into the cell cover. Data used in this analysis consist of existing information on vegetation growth on selected cell cover systems and information available from published studies and/or other available project research. Consistent with the scope of this paper, no new site-specific data were collected from UMTRA Project sites. Further, this paper does not focus on the issue of plant transport of radon gas or other contaminants out of the disposal cell cover though it is acknowledged that such transport has the potential to be a significant pathway for contaminants to reach the environment during portions of the design life of a disposal cell where plant growth occurs. Rather, this study was performed to evaluate the effects of physical penetration and soil drying caused by plant roots that have and are expected to continue to grow in UMTRA Project disposal cell covers. An understanding of the biological and related physical processes that take place within the cover systems of the UMTRA Project disposal cells helps the U.S. Department of Energy (DOE) determine if the presence of a plant community on these cells is detrimental, beneficial, or of mixed value in terms of the cover system`s designed function. Results of this investigation provide information relevant to the formulation of a vegetation control policy.

  15. UMTRA -- The US Uranium Mill Tailings Remedial Action Project

    SciTech Connect (OSTI)

    Lightner, R. [Dept. of Energy, Washington, DC (United States); Cormier, C. [Department of Energy, Albuquerque, NM (United States); Bierley, D. [Roy F. Weston, Inc., Albuquerque, NM (United States)

    1995-12-31T23:59:59.000Z

    In the late 1970s, the United States (US) established the first comprehensive regulatory structure for the management, disposal, and long-term care of wastes produced from its domestic uranium processing industry. This regulatory framework was established through the passage of the Uranium Mill Tailings Radiation Control Act of 1978, often referred to as UMTRCA. This legislation created the Uranium Mill Tailings Remedial Action (UMTRA) Project and assigned the US Department of Energy (DOE) the lead in conducting the required remedial action at 24 designated inactive uranium ore processing sites. With the majority of these 22 sites complete, the DOE`s UMTRA Project has established a distinguished reputation for safely and effectively remediating these low-level waste sites in a complex regulatory and socioeconomic environment. This paper describes the past accomplishments and current status of the UMTRA Project and discusses the DOE`s plans for addressing ground water contamination associated with these sites and its commitment to continuing the long-term care and management of these disposal cells.

  16. UMTRA project water sampling and analysis plan, Monument Valley, Arizona

    SciTech Connect (OSTI)

    Not Available

    1994-04-01T23:59:59.000Z

    The Monument Valley Uranium Mill Tailings Remedial Action (UMTRA) Project site in Cane Valley is a former uranium mill that has undergone surface remediation in the form of tailings and contaminated materials removal. Contaminated materials from the Monument Valley (Arizona) UMTRA Project site have been transported to the Mexican Hat (Utah) UMTRA Project site for consolidation with the Mexican Hat tailings. Tailings removal was completed in February 1994. Three geologic units at the site contain water: the unconsolidated eolian and alluvial deposits (alluvial aquifer), the Shinarump Conglomerate (Shinarump Member), and the De Chelly Sandstone. Water quality analyses indicate the contaminant plume has migrated north of the site and is mainly in the alluvial aquifer. An upward hydraulic gradient in the De Chelly Sandstone provides some protection to that aquifer. This water sampling and analysis plan recommends sampling domestic wells, monitor wells, and surface water in April and September 1994. The purpose of sampling is to continue periodic monitoring for the surface program, evaluate changes to water quality for site characterization, and provide data for the baseline risk assessment. Samples taken in April will be representative of high ground water levels and samples taken in September will be representative of low ground water levels. Filtered and nonfiltered samples will be analyzed for plume indicator parameters and baseline risk assessment parameters.

  17. UMTRA Ground Water Project management action process document

    SciTech Connect (OSTI)

    NONE

    1996-03-01T23:59:59.000Z

    A critical U.S. Department of Energy (DOE) mission is to plan, implement, and complete DOE Environmental Restoration (ER) programs at facilities that were operated by or in support of the former Atomic Energy Commission (AEC). These facilities include the 24 inactive processing sites the Uranium Mill Tailings Radiation Control Act (UMTRCA) (42 USC Section 7901 et seq.) identified as Title I sites, which had operated from the late 1940s through the 1970s. In UMTRCA, Congress acknowledged the potentially harmful health effects associated with uranium mill tailings and directed the DOE to stabilize, dispose of, and control the tailings in a safe and environmentally sound manner. The UMTRA Surface Project deals with buildings, tailings, and contaminated soils at the processing sites and any associated vicinity properties (VP). Surface remediation at the processing sites will be completed in 1997 when the Naturita, Colorado, site is scheduled to be finished. The UMTRA Ground Water Project was authorized in an amendment to the UMTRCA (42 USC Section 7922(a)), when Congress directed DOE to comply with U.S. Environmental Protection Agency (EPA) ground water standards. The UMTRA Ground Water Project addresses any contamination derived from the milling operation that is determined to be present at levels above the EPA standards.

  18. UMTRA project technical assistance contractor quality assurance implementation plan for surface and ground water

    SciTech Connect (OSTI)

    Not Available

    1994-09-01T23:59:59.000Z

    The Uranium Mill Tailings Remedial Action (UMTRA) Project Technical Assistance Contractor (TAC) Quality Assurance Implementation Plan (QAIP) outlines the primary requirements for integrating quality functions for TAC technical activities applied to the surface and ground water phases of the UMTRA Project. The QAIP is subordinate to the latest issue of the UMTRA Project TAC Quality Assurance Program Plan (QAPP). The QAIP addresses technical aspects of the TAC UMTRA Project surface and ground water programs. The QAIP is authorized and approved by the TAC Project Manager and QA manager. The QA program is designed to use monitoring, audit, and surveillance functions as management tools to ensure that all Project organization activities are carried out in a manner that will protect public health and safety, promote the success of the UMTRA Project and meet or exceed contract requirements.

  19. Management and overview Quality Assurance Program Plan. [Uranium Mill Tailings Remedial Action (UMTRA) Project

    SciTech Connect (OSTI)

    Not Available

    1986-08-01T23:59:59.000Z

    The Uranium Mill Tailings Remedial Action (UMTRA) Project Office (DOE/ UMTRA-PO) is the US Department of Energy (DOE) Albuquerque Operations Office (AL) organization charged with the responsibility of managing and coordinating the activities of the various participating organizations and support contractors working on the UMTRA Project. This Quality Assurance Program Plan (QAPP) describes how the DOE/UMTRA-PO, as assisted by the Technical Assistance Contractor (TAC), performs the quality assurance (QA) aspects of managing and coordinating UMTRA Project activities. This QAPP was developed to comply with DOE Order 5700.6A, August, 1981, and AL Order 5700.6B, April, 1984, which contain the criteria applicable to Project QA activities.

  20. The effect of desiccation on UMTRA Project radon barrier materials

    SciTech Connect (OSTI)

    Not Available

    1990-11-01T23:59:59.000Z

    The proposed US Environmental Protection Agency (EPA) groundwater standards (40 CFR 192) require that Uranium Mill Tailings Remedial Action (UMTRA) Project remedial action designs meet low numerical limits for contaminants contained in water or vapors exiting the disposal cell embankments. To meet the standards, a cover of compacted, fine-grained soil is placed over UMTRA Project embankments. One of the functions of this cover is to limit infiltration into the disposal cell . The hydraulic conductivity of this infiltration barrier must be low in order to reduce the resultant seepage from the base of the cell to the extent necessary to comply with the proposed EPA groundwater standards. Another function of this cover is to limit the emission of radon gas. The air permeability of the cover must be low in order to reduce radon emissions to comply with EPA standards. Fine-grained soils exposed to evaporation will dry. Continued exposure will cause shrinking that, if allowed to continue, will eventually result in the development of cracks. The results of the cracking could be an increase in the hydraulic conductivity and an increase in the air permeability. This could then allow additional infiltration and increased radon emissions. Cracking of the radon barrier has been noted at one UMTRA Project location. The potential for cracking of the radon barrier during construction has been addressed by requiring moistening of previously compacted surfaces prior to placing additional lifts. The efficacy of these treatments has not been verified. The potential for cracking after construction of the cover is completed has also not been examined. The purpose of this study is to evaluate the potential for cracking of the radon barrier both during construction and after completion of the cover. The effect of shrinkage cracking on the performance of the radon barrier will also be examined.

  1. UMTRA Project value engineering plan. [Design and construction of stabilized tailings embankments

    SciTech Connect (OSTI)

    Not Available

    1990-06-01T23:59:59.000Z

    The objective of value engineering (VE) on the Uranium MILL Tailings Remedial Action (UMTRA) Project is to ensure that remedial action at the UMTRA Project sites is performed to meet the US Environmental Protection Agency (EPA) standards for inactive uranium mill tailings sites at the lowest cost, while maintaining a high quality of work. Through review of designs and consideration of reasonable, less expensive alternatives, VE can be an effective cost reduction tool and a means to improve the design. The UMTRA Project products are the design and construction of stabilized tailings embankments.

  2. Policy and procedures for classification of Class III groundwater at UMTRA Project sites. Final

    SciTech Connect (OSTI)

    Not Available

    1989-03-01T23:59:59.000Z

    The US Environmental Protection Agency (EPA) has recently proposed groundwater regulations for the US Department of Energy`s )DOE) Uranium Mill Tailings Remedial Action (UMTRA) Project. These regulations allow the application of supplemental standards at UMTRA Project sites in specific situations. The designation of groundwater as Class III permits the application of supplemental standards. This document discusses a final UMTRA Project policy and procedures for identifying Class III groundwater, including identification of a review area, definition of water quality, quantification of aquifer yield, and identification of methods reasonably employed for public water supply systems. These items, either individually or collectively, need to be investigated in order to determine if groundwaters at UMTRA Project sites are Class III. This document provides a framework for the DOE to determine Class III groundwaters.

  3. Supplement to the UMTRA Project water sampling and analysis plan, Ambrosia Lake, New Mexico

    SciTech Connect (OSTI)

    NONE

    1995-08-01T23:59:59.000Z

    The Ambrosia Lake Uranium Mill Tailings Remedial Action (UMTRA) Project site is in McKinley County, New Mexico. As part of UMTRA surface remediation, residual radioactive materials were consolidated on the site in a disposal cell that was completed July 1995. The need for ground water monitoring was evaluated and found not to be necessary beyond the completion of the remedial action because the ground water in the uppermost aquifer is classified as limited use.

  4. Site Observational Work Plan for the UMTRA Project Site at Shiprock, New Mexico. Revision

    SciTech Connect (OSTI)

    NONE

    1995-07-01T23:59:59.000Z

    The site observational work plan (SOWP) for the Shiprock, New Mexico, Uranium Mill Tailings Remedial Action (UMTRA) Project Site is one of the first documents for developing an approach for achieving ground water compliance at the site. This SOWP applies Shiprock site information to a regulatory compliance framework, which identifies strategies for meeting ground water compliance at the site. The compliance framework was developed in the UMTRA ground water programmatic environmental impact statement.

  5. DOE Grand Junction Projects Office Edgemont LTSP

    Office of Legacy Management (LM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOn AprilA group currentBradleyTableSelling CorpNew 1325.8. (8-89) EFO IO?-90) United

  6. Josephson junction

    DOE Patents [OSTI]

    Wendt, J.R.; Plut, T.A.; Martens, J.S.

    1995-05-02T23:59:59.000Z

    A novel method for fabricating nanometer geometry electronic devices is described. Such Josephson junctions can be accurately and reproducibly manufactured employing photolithographic and direct write electron beam lithography techniques in combination with aqueous etchants. In particular, a method is described for manufacturing planar Josephson junctions from high temperature superconducting material. 10 figs.

  7. Mitigation and monitoring plan for impacted wetlands at the Gunnison UMTRA Project site, Gunnison, Colorado. [Uranium Mill Tailings Remedial Action (UMTRA) Project

    SciTech Connect (OSTI)

    Not Available

    1992-06-01T23:59:59.000Z

    The U.S Department of Energy (DOE) administers the Uranium Mill Tailings Remedial Action (UMTRA) Project. The UMTRA Project is the result of the Uranium Mill Tailings Radiation Control Act(UMTRA) which was passed in response to the public's concern over the potential public health hazards related to uranium mill tailings and associated contaminated material at abandoned or otherwise uncontrolled inactive processing sites throughout the United States. The Gunnison, Colorado abandoned uranium mill site is one of the sites slated for cleanup by the DOE under authority of UMTRA. The contaminated material at this site will be transported to a disposal site on US Bureau of Land Management (BLM) land east of Gunnison. Remedial action activities will temporarily disturb 0.8 acre and permanently eliminate 5.1 acres of wetlands. This report describes the proposed mitigation plan for the 5.9 acres of impacted wetlands. In conjunction with the mitigation of the permanently impacted wetlands through the enhancement of wetland and adjacent riparian areas, impacts to wildlife as a result of this project will also be mitigated. However, wildlife mitigation is not the focus of this document and is covered in relevant BLM permits for this project. This plan proposes the enhancement of a 3:1 ratio of impacted wetlands in accordance with US Environmental Protection Agency guidelines, plus the enhancement of riparian areas for wildlife mitigation. Included in this mitigation plan is a monitoring plan to ensure that the proposed measures are working and being maintained.

  8. UMTRA Project water sampling and analysis plan, Durango, Colorado. Revision 1

    SciTech Connect (OSTI)

    NONE

    1995-09-01T23:59:59.000Z

    Planned, routine ground water sampling activities at the US Department of Energy (DOE) Uranium Mill Tailings Remedial Action (UMTRA) Project site in Durango, Colorado, are described in this water sampling and analysis plan. The plan identifies and justifies the sampling locations, analytical parameters, detection limits, and sampling frequency for the routine monitoring stations at the site. The ground water data are used to characterize the site ground water compliance strategies and to monitor contaminants of potential concern identified in the baseline risk assessment (DOE, 1995a). Regulatory basis for routine ground water monitoring at UMTRA Project sites is derived from the US EPA regulations in 40 CFR Part 192 (1994) and EPA standards of 1995 (60 FR 2854). Sampling procedures are guided by the UMTRA Project standard operating procedures (SOP) (JEG, n.d.), the Technical Approach Document (TAD) (DOE, 1989), and the most effective technical approach for the site.

  9. UMTRA project water sampling and analysis plan, Naturita, Colorado. Revision 1

    SciTech Connect (OSTI)

    NONE

    1995-09-01T23:59:59.000Z

    Planned, routine ground water sampling activities for calendar year 1995 to 1997 at the US Department of Energy (DOE) Uranium Mill Tailings Remedial Action (UMTRA) Project site near Naturita, Colorado, are described in this water sampling and analysis plan. The following plan identifies and justifies the sampling locations, analytical parameters, detection limits, sampling frequency, and specific rationale for each routine monitoring station at the site. The regulatory basis for routine ground water monitoring at UMTRA Project sites is derived from the US Environmental Protection Agency (EPA) regulations in 40 CFR Part 192. Sampling procedures are guided by the UMTRA Project standard operating procedures (SOP) (JEG, n.d.), the Technical Approach Document (TAD) (DOE, 1989), and the most effective technical approach for the site.

  10. Quality assurance project plan for the UMTRA technical assistance contractor hydrochemistry facility. Final report

    SciTech Connect (OSTI)

    NONE

    1993-07-01T23:59:59.000Z

    The Uranium Mill Tailings Remedial Action (UMTRA) hydrochemistry facility is used to perform a limited but important set of services for the UMTRA Project. Routine services include support of field-based hydrological and geochemical operations and water sampling activities. Less commonly, the hydrology and geochemistry staff undertake special studies and site characterization studies at this facility. It is also used to train hydrologists, geochemists, and groundwater sampling crews. A review of this Quality Assurance Project Plan (QAPP) shall be accomplished once each calendar year. This review will be targeted to be accomplished not sooner than 6 months and not later than 18 months after the last review.

  11. UMTRA ground water sampling techniques: Comparison of the traditional and low flow methods

    SciTech Connect (OSTI)

    NONE

    1995-07-01T23:59:59.000Z

    This report describes the potential changes in water quality data that may occur with the conversion from MBV (multiple bore volume) to LF (low flow) sampling and provides two examples of how such a change might impact Project decisions. The existing scientific literature on LF sampling is reviewed and the new LF data from three UMTRA Uranium Mill Tailings Remedial Action Project sites are evaluated seeking answers to the questions posed above. Several possible approaches, that the UMTRA Project may take to address issues unanswered by the literature are presented and compared, and a recommendation is offered for the future direction of the LF conversion effort.

  12. Uranium Mill Tailings Remedial Action (UMTRA) Surface Project: Project plan. Revision 1

    SciTech Connect (OSTI)

    Not Available

    1993-08-11T23:59:59.000Z

    The Uranium Mill Tailings Radiation Control Act of 1978 (UMTRCA) [Public Law (PL) 95-604, 42 United States Code (USC) 7901], hereinafter referred to as the ``Act,`` authorizes the US Department of Energy (DOE) to stabilize and control surface tailings and ground water contamination. To fulfill this mission, the DOE has established two projects under the Uranium Mill Tailings Remedial Action (UMTRA) Project Office. The Ground Water Project was established in April 1991 as a major project and a separate project plan will be prepared for that portion of the mission. This project plan covers the UMTRA Surface Project, a major system acquisition (MSA).

  13. LM Training & Conferences | Department of Energy

    Broader source: Energy.gov (indexed) [DOE]

    2-3, 2013) National Environmental Justice Conference (Washington, DC; April 3-5, 2013) UMTRA Regulations and Implementation Workshop; (Grand Junction, CO; April 9-11, 2013) The...

  14. Final audit report of remedial action construction at the UMTRA project site Rifle, Colorado. Rev. 1

    SciTech Connect (OSTI)

    NONE

    1997-01-01T23:59:59.000Z

    This final audit report summarizes the assessments performed by the U.S. Department of Energy (DOE) Environmental Restoration Division (ERD) and its Technical Assistance Contractor (TAC) of remedial action compliance with approved plans, specifications, standards, and 40 CFR Part 192 at the Rifle, Colorado, Uranium Mill Tailings Remedial Action (UMTRA) Project site. Remedial action construction was directed by the Remedial Action Contractor (RAC).

  15. Review and analysis of proposed EPA groundwater standards for the UMTRA Project. Summary report

    SciTech Connect (OSTI)

    Not Available

    1987-10-01T23:59:59.000Z

    The Title I groundwater standards for inactive uranium mill tailings sites, which were promulgated on January 5, 1983, by the US Environmental Protection Agency (EPA) for the Uranium Mill Tailings Remedial Action (UMTRA) Project, were remanded to the EPA on September 3, 1985, by the US Tenth Circuit Court of Appeals. The Court instructed the EPA to compile general groundwater standards for all sites. On September 24, 1987, the EPA published proposed standards in response to the remand. This Summary Report includes an evaluation of the potential effects of the proposed EPA groundwater standards on the UMTRA Project as well as a discussion of the DOE`s position on the proposed standards. This report is accompanied by a detailed Technical Report and Appendices which provide supporting information and analyses. This Summary Report results from a study undertaken to: determine the impact of the proposed standards on the UMTRA Project; and recommend provisions for the implementation of the final standards that will minimize adverse impact to the conduct of the UMTRA Project while ensuring protection of human health and the environment. Specifically, the following were considered: the flexibility of the proposed standards; interpretations of the proposed standards; the extent of aquifer restoration that may be required to implement the proposed standards at each site; the costs of aquifer restoration; and design changes necessary to meet the standards.

  16. Environmental Assessment of Ground Water Compliance at the Durango, Colorado, UMTRA Project Site

    SciTech Connect (OSTI)

    N /A

    2002-11-29T23:59:59.000Z

    The U.S. Department of Energy (DOE) is proposing a ground water compliance strategy for the Uranium Mill Tailings Remedial Action (UMTRA) Project site near Durango, Colorado. DOE has prepared this environmental assessment to provide the public with information concerning the potential effects of this proposed strategy.

  17. Mitigation and monitoring plan for impacted wetlands at the Gunnison UMTRA Project site, Gunnison, Colorado

    SciTech Connect (OSTI)

    Not Available

    1992-06-01T23:59:59.000Z

    The U.S Department of Energy (DOE) administers the Uranium Mill Tailings Remedial Action (UMTRA) Project. The UMTRA Project is the result of the Uranium Mill Tailings Radiation Control Act(UMTRA) which was passed in response to the public`s concern over the potential public health hazards related to uranium mill tailings and associated contaminated material at abandoned or otherwise uncontrolled inactive processing sites throughout the United States. The Gunnison, Colorado abandoned uranium mill site is one of the sites slated for cleanup by the DOE under authority of UMTRA. The contaminated material at this site will be transported to a disposal site on US Bureau of Land Management (BLM) land east of Gunnison. Remedial action activities will temporarily disturb 0.8 acre and permanently eliminate 5.1 acres of wetlands. This report describes the proposed mitigation plan for the 5.9 acres of impacted wetlands. In conjunction with the mitigation of the permanently impacted wetlands through the enhancement of wetland and adjacent riparian areas, impacts to wildlife as a result of this project will also be mitigated. However, wildlife mitigation is not the focus of this document and is covered in relevant BLM permits for this project. This plan proposes the enhancement of a 3:1 ratio of impacted wetlands in accordance with US Environmental Protection Agency guidelines, plus the enhancement of riparian areas for wildlife mitigation. Included in this mitigation plan is a monitoring plan to ensure that the proposed measures are working and being maintained.

  18. Groundwater protection management program plan. [Uranium Mill Tailings Remedial Action (UMTRA) Project

    SciTech Connect (OSTI)

    Not Available

    1992-06-01T23:59:59.000Z

    US Department of Energy (DOE) Order 5400.1 requires the establishment of a groundwater protection management program to ensure compliance with DOE requirements and applicable Federal, state, and local laws and regulations. The Uranium Mill Tailings Remedial Action (UMTRA) Project Office has prepared a Groundwater Protection Management Program Plan'' (groundwater protection plan) of sufficient scope and detail to reflect the program's significance and address the seven activities required in DOE Order 5400.1, Chapter 3, for special program planning. The groundwater protection plan highlights the methods designed to preserve, protect, and monitor groundwater resources at UMTRA Project processing and disposal sites. The plan includes an overview of the remedial action status at the 24 designated processing sites and identifies project technical guidance documents and site-specific documents for the UMTRA groundwater protection management program. In addition, the groundwater protection plan addresses the general information required to develop a water resources protection strategy at the permanent disposal sites. Finally, the plan describes ongoing activities that are in various stages of development at UMTRA sites (long-term care at disposal sites and groundwater restoration at processing sites). This plan will be reviewed annually and updated every 3 years in accordance with DOE Order 5400.1.

  19. DOE`s approach to groundwater compliance on the UMTRA project

    SciTech Connect (OSTI)

    Metzler, D. [Dept. of Energy, Washington, DC (United States); Gibb, J.P. [Geraghty and Miller, Inc. (United States); Glover, W.A. [Roy F. Weston, Inc. (United States)

    1993-03-01T23:59:59.000Z

    Compliance with the mandate of the Uranium Mill Tailings Radiation Control Act (UMTRCA) at Uranium Mill Tailings Remedial Action (UMTRA) Project sites requires implementation of a groundwater remedial action plan that meets the requirements of Subpart B of the US Environmental Protection Agency`s proposed groundwater protection standards (40 CFR 192). The UMTRA Groundwater Project will ensure that unacceptable current risk or potential risk to the public health, safety and the environment resulting from the groundwater contamination attributable to the UMTRA sites, is mitigated in a timely and cost-efficient manner. For each UMTRA processing site and vicinity property where contamination exists, a groundwater remedial action plan must be developed that identifies hazardous constituents and establishes acceptable concentration limits for the hazardous constituents as either (a) alternate concentration limits (ACL), (b) maximum concentration limits (MCLs), (c) supplemental standards, or (d) background groundwater quality levels. Project optimization is a strategy that will aggressively work within the current regulatory framework using all available options to meet regulatory requirements. This strategy is outlined within.

  20. Technical considerations for the implementation of subsurface microbial barriers for restoration of groundwater at UMTRA sites

    SciTech Connect (OSTI)

    Tucker, M.D.

    1996-01-01T23:59:59.000Z

    The Uranium Mill Tailings Remediation Action (UMTRA) Program is responsible for the assessment and remedial action at the 24 former uranium mill tailings sites located in the United States. The surface remediation phase, which has primarily focused on containment and stabilization of the abandoned uranium mill tailings piles, is nearing completion. Attention has now turned to the groundwater restoration phase. One alternative under consideration for groundwater restoration at UMTRA sites is the use of in-situ permeable reactive subsurface barriers. In this type of a system, contaminated groundwater will be allowed to flow naturally through a barrier filled with material which will remove hazardous constituents from the water by physical, chemical or microbial processes while allowing passage of the pore water. The subject of this report is a reactive barrier which would remove uranium and other contaminants of concern from groundwater by microbial action (i.e., a microbial barrier). The purpose of this report is to assess the current state of this technology and to determine issues that must be addressed in order to use this technology at UMTRA sites. The report focuses on six contaminants of concern at UMTRA sites including uranium, arsenic, selenium, molybdenum, cadmium and chromium. In the first section of this report, the fundamental chemical and biological processes that must occur in a microbial barrier to control the migration of contaminants are described. The second section contains a literature review of research which has been conducted on the use of microorganisms to immobilize heavy metals. The third section addresses areas which need further development before a microbial barrier can be implemented at an UMTRA site.

  1. DECHEM: A remedial planning tool for metallic contaminants in soil at UMTRA Project sites

    SciTech Connect (OSTI)

    Not Available

    1989-03-01T23:59:59.000Z

    The DECHEM (DEcontamination of CHEMicals) method was developed for the Uranium Mill Tailings Remedial Action (UMTRA) Project to guide characterization and remedial planning for metals contamination in soils. This is necessary because non-radiological hazardous constituents may be more mobile than radium-226 (Ra-226), and hence may migrate more deeply into subpile soils (beneath tailings that are to be relocated) or into adjacent contaminated soils at UMTRA Project sites. The result is that remedial action to the Ra-226 excavation limit, as specified in the US Environmental Protection Agency (EPA) standards, may not adequately remove hazardous non-radiological contamination. Unmitigated, these contaminants in soil may cause health risks because of their presence in resuspended particles, their uptake by crops or fodder their seepage into aquifers used for drinking water or other possible exposure pathways. The DECHEM method was developed in response to the need for advanced planning for the remediation of chemical contaminants at UMTRA Project sites, and includes the following elements: Establishment of acceptable exposure rates for humans to chemicals, based on EPA guidelines or other toxicological literature. Modeling of chemical migration through environmental pathways from a remediated UMTRA Project site to humans. Determination of allowable residual concentrations (i.e., cleanup guidelines) for chemicals in soils that results in doses to humans that are below established acceptable exposure rates. The initial development and application of the DECHEM method has focused upon hazardous metallic contaminants such as arsenic, lead, molybdenum, and selenium, which are known to occur in elevated concentrations at some UMTRA Project sites.

  2. Evaluation of impacts and mitigation assessments for the UMTRA Project: Gunnison and Durango pilot studies. Final report

    SciTech Connect (OSTI)

    Beranich, S.J. [Southwest Environmental, Albuquerque, NM (United States)

    1994-08-24T23:59:59.000Z

    This report evaluates the impacts assessment and proposed mitigations provided in environmental documents concerning the US Department of Energy`s (DOE) Uranium Mill Tailings Remedial Action (UMTRA) Project. The projected impacts and proposed mitigations identified in UMTRA Project environmental documents were evaluated for two UMTRA Project sites. These sites are Gunnison and Durango, which are representative of currently active and inactive UMTRA Project sites, respectively. National Environmental Policy Act (NEPA) documentation was prepared for the remedial action at Durango and Gunnison as well as for the provision of an alternate water supply system at Gunnison. Additionally, environmental analysis was completed for mill site demolition Gunnison, and for a new road related to the Durango remedial action. The results in this report pertain only to the impact assessments prepared by the Regulatory Compliance staff as a part of the NEPA compliance requirements. Similarly, the mitigative measures documented are those that were identified during the NEPA process.

  3. Grand Challenges

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville Power AdministrationField8,Dist.NewofGeothermal Heat PumpJorgeAtlGrad.Employee, RetireeGrand

  4. Site observational work plan for the UMTRA Project site at Falls City, Texas

    SciTech Connect (OSTI)

    NONE

    1995-06-01T23:59:59.000Z

    Produced by the US Department of Energy (DOE), this site observational work plan (SOWP) will be used to determine site-specific activities to comply with the US Environmental Protection Agency (EPA) ground water standards at this Uranium Mill Tailings Remedial Action (UMTRA) Project site. The purpose of the SOWP is to recommend a site-specific ground water compliance strategy at the Falls City UMTRA Project site. The Falls City SOWP presents a comprehensive summary of site hydrogeological data, delineates a conceptual model of the aquifer system, and discusses the origins of milling-related ground water contamination. It also defines the magnitude of ground water contamination, potential environmental and health risks associated with ground water contamination and data gaps, and targets a proposed compliance strategy.

  5. Site observational work plan for the UMTRA Project site at Riverton, Wyoming

    SciTech Connect (OSTI)

    Not Available

    1994-09-01T23:59:59.000Z

    The site observational work plan (SOWP) for the Riverton, Wyoming, Uranium Mill Tailings Remedial Action (UMTRA) Project Site is the first document for the UMTRA Ground Water Project to address site-specific activities to meet compliance with the U.S. Environmental Protection Agency (EPA) proposed ground water standards (52 FR 36000 (1987)). In support of the activities the regulatory framework and drivers are presented along with a discussion of the relationship of this SOWP to other UMTRA Ground Water Project programmatic documents. A combination of the two compliance strategies that will be recommended for this site are no remediation with the application of alternate concentration levels (ACL) and natural flushing in conjunction with institutional controls. ACLs are to be applied to constituents that occur at concentrations above background levels but which are essential nutrients and occur within nutritional ranges and/or have very low toxicity and high dietary intake rates compared to the levels detected in the ground water. The essential premise of natural flushing is that ground water movement and natural attenuation processes will reduce the detected contamination to background levels within 1 00 years. These two recommended compliance strategies were evaluated by applying Riverton site-specific data to the compliance framework developed in the UMTRA Ground Water programmatic environmental impact statement. There are three aquifers beneath the site: a surficial unconfined aquifer, a middle semiconfined aquifer, and a deeper confined aquifer. The milling-related contamination at the site has affected both the surficial and semiconfined aquifers, although the leaky shale aquifers separating these units limits the downward migration of contamination into the semiconfined aquifer. A shale aquitard separates the semiconfined aquifer from the underlying confined aquifer which has not been contaminated by milling-related constituents.

  6. Site observational work plan for the UMTRA project site at Shiprock, New Mexico

    SciTech Connect (OSTI)

    Not Available

    1994-09-01T23:59:59.000Z

    The site observational work plan (SOWP) for the Shiprock, New Mexico, Uranium Mill Tailings Remedial Action (UMTRA) Project Site is the initial document for developing site-specific activities to achieve regulatory compliance in the UMTRA Ground Water Project. The regulatory framework used to select the proposed ground water compliance strategies is presented along with a discussion of the relationship of this SOWP to other UMTRA Ground Water Project programmatic documents. The Shiprock site consists of two, interconnected hydrogeologic systems: the terrace system and the floodplain system. Separate compliance strategies are proposed for these two systems. The compliance strategy for the terrace aquifer is no remediation with the application of supplemental standards based on classification of the terrace aquifer as having Class III (limited-use) ground water. The compliance strategy for the floodplain aquifer is active remediation using a subsurface biological barrier. These strategies were selected by applying site-specific data to the compliance framework developed in the UMTRA Ground Water programmatic environmental impact statement (PEIS) (DOE, 1994a). The site conceptual model indicates that milling-related contamination has impacted the ground water in the terrace and floodplain aquifers. Ground water occurs in both aquifers in alluvium and in fractures in the underlying Cretaceous age Mancos Shale. A mound of ground water related to fluids from the milling operations is thought to exist in the terrace aquifer below the area where settling ponds were in use during the mill operations. Most of the water occurring in the floodplain aquifer is from recharge from the San Juan River.

  7. 1992 Colorado Economic Impact Study for the US Department of Energy and Colorado Department of Health Uranium Mill Tailings Remedial Action (UMTRA) Project

    SciTech Connect (OSTI)

    Not Available

    1991-10-22T23:59:59.000Z

    The findings of the 1992 Colorado Economic Impact Study (CEIS) for the Uranium Mill Tailings Remedial Action (UMTRA) Project are outlined below. All dollar amounts used in the study are in year-of-expenditure dollars. The total funding requirement for the State of Colorado for the UMTRA Project is estimated to be $66.8 million, or 10 percent of the remedial action costs for the UMTRA Project in Colorado. The UMTRA Project will generate $487.5 million in gross labor income in Colorado between 1983 and 1996. This includes $54.4 million in state and local tax revenues and $41.2 million in federal individual income tax revenues. The net economic benefit of the UMTRA Project to Colorado is $355.1 million. For every dollar the State of Colorado invests in the UMTRA Project, it will realize $5.32 in gross labor income. The employment impact to the Western Slope region is significant. The UMTRA Project will create a total employment impact of 13,749 fulltime equivalents (FTES) spread over. a period of 13 years in seven site areas. Nearly 100 percent of the labor will be drawn from the local communities. The State of Colorado's Western Slope is anticipated to be minimally impacted by the phaseout of the UMTRA Project. Unlike industries that shut down operations without warning, the UMTRA Project workers, local government, and businesses know the schedule for completion and can consider and prepare for the impact of UMTRA Project conclusion. Further, because the majority of the work force is local, there has not been a significant investment in each community's infrastructure. Any small increases in the infrastructure will not be abandoned at the end of the UMTRA Project due to a marked increase in migration out of the local community.

  8. 1992 Colorado Economic Impact Study for the US Department of Energy and Colorado Department of Health Uranium Mill Tailings Remedial Action (UMTRA) Project. Preliminary final

    SciTech Connect (OSTI)

    Not Available

    1991-10-22T23:59:59.000Z

    The findings of the 1992 Colorado Economic Impact Study (CEIS) for the Uranium Mill Tailings Remedial Action (UMTRA) Project are outlined below. All dollar amounts used in the study are in year-of-expenditure dollars. The total funding requirement for the State of Colorado for the UMTRA Project is estimated to be $66.8 million, or 10 percent of the remedial action costs for the UMTRA Project in Colorado. The UMTRA Project will generate $487.5 million in gross labor income in Colorado between 1983 and 1996. This includes $54.4 million in state and local tax revenues and $41.2 million in federal individual income tax revenues. The net economic benefit of the UMTRA Project to Colorado is $355.1 million. For every dollar the State of Colorado invests in the UMTRA Project, it will realize $5.32 in gross labor income. The employment impact to the Western Slope region is significant. The UMTRA Project will create a total employment impact of 13,749 fulltime equivalents (FTES) spread over. a period of 13 years in seven site areas. Nearly 100 percent of the labor will be drawn from the local communities. The State of Colorado`s Western Slope is anticipated to be minimally impacted by the phaseout of the UMTRA Project. Unlike industries that shut down operations without warning, the UMTRA Project workers, local government, and businesses know the schedule for completion and can consider and prepare for the impact of UMTRA Project conclusion. Further, because the majority of the work force is local, there has not been a significant investment in each community`s infrastructure. Any small increases in the infrastructure will not be abandoned at the end of the UMTRA Project due to a marked increase in migration out of the local community.

  9. UMTRA project water sampling and analysis plan, Falls City, Texas. Revision 1

    SciTech Connect (OSTI)

    NONE

    1995-09-01T23:59:59.000Z

    Planned, routine ground water sampling activities at the US Department of Energy (DOE) Uranium Mill Tailings Remedial Action (UMTRA) Project site near Falls City, Texas, are described in this water sampling and analysis plan (WSAP). The following plan identifies and justifies the sampling locations, analytical parameters, and sampling frequency for the routine monitoring stations at the site. The ground water data are used for site characterization and risk assessment. The regulatory basis for routine ground water monitoring at UMTRA Project sites is derived from the US Environmental Protection Agency (EPA) regulations in 40 CFR Part 192. Sampling procedures are guided by the UMTRA Project standard operating procedures (SOP) (JEG, n.d.), the Technical Approach Document (TAD) (DOE, 1989), and the most effective technical approach for the site. The Falls City site is in Karnes County, Texas, approximately 8 miles [13 kilometers southwest of the town of Falls City and 46 mi (74 km) southeast of San Antonio, Texas. Before surface remedial action, the tailings site consisted of two parcels. Parcel A consisted of the mill site, one mill building, five tailings piles, and one tailings pond south of Farm-to-Market (FM) Road 1344 and west of FM 791. A sixth tailings pile designated Parcel B was north of FM 791 and east of FM 1344.

  10. Recommendations for computer modeling codes to support the UMTRA groundwater restoration project

    SciTech Connect (OSTI)

    Tucker, M.D. [Sandia National Labs., Albuquerque, NM (United States); Khan, M.A. [IT Corp., Albuquerque, NM (United States)

    1996-04-01T23:59:59.000Z

    The Uranium Mill Tailings Remediation Action (UMTRA) Project is responsible for the assessment and remedial action at the 24 former uranium mill tailings sites located in the US. The surface restoration phase, which includes containment and stabilization of the abandoned uranium mill tailings piles, has a specific termination date and is nearing completion. Therefore, attention has now turned to the groundwater restoration phase, which began in 1991. Regulated constituents in groundwater whose concentrations or activities exceed maximum contaminant levels (MCLs) or background levels at one or more sites include, but are not limited to, uranium, selenium, arsenic, molybdenum, nitrate, gross alpha, radium-226 and radium-228. The purpose of this report is to recommend computer codes that can be used to assist the UMTRA groundwater restoration effort. The report includes a survey of applicable codes in each of the following areas: (1) groundwater flow and contaminant transport modeling codes, (2) hydrogeochemical modeling codes, (3) pump and treat optimization codes, and (4) decision support tools. Following the survey of the applicable codes, specific codes that can best meet the needs of the UMTRA groundwater restoration program in each of the four areas are recommended.

  11. Selection of water treatment processes special study. [Uranium Mill Tailings Remedial Action (UMTRA) Project

    SciTech Connect (OSTI)

    Not Available

    1991-11-01T23:59:59.000Z

    Characterization of the level and extent of groundwater contamination in the vicinity of Title I mill sites began during the surface remedial action stage (Phase 1) of the Uranium Mill Tailings Remedial Action (UMTRA) Project. Some of the contamination in the aquifer(s) at the abandoned sites is attributable to milling activities during the years the mills were in operation. The restoration of contaminated aquifers is to be undertaken in Phase II of the UMTRA Project. To begin implementation of Phase II, DOE requested that groundwater restoration methods and technologies be investigated by the Technical Assistance Contractor (TAC). and that the results of the TAC investigations be documented in special study reports. Many active and passive methods are available to clean up contaminated groundwater. Passive groundwater treatment includes natural flushing, geochemical barriers, and gradient manipulation by stream diversion or slurry walls. Active groundwater.cleanup techniques include gradient manipulation by well extraction or injection. in-situ biological or chemical reclamation, and extraction and treatment. Although some or all of the methods listed above may play a role in the groundwater cleanup phase of the UMTRA Project, the extraction and treatment (pump and treat) option is the only restoration alternative discussed in this report. Hence, all sections of this report relate either directly or indirectly to the technical discipline of process engineering.

  12. Implementation of UMTRA Project Environmental Audit Action Plan status report for period ending September 30, 1992. [Uranium Mill Tailings Remedial Action (UMTRA) Project

    SciTech Connect (OSTI)

    Not Available

    1992-09-01T23:59:59.000Z

    This report provides the status of implementation of corrective actions for findings made in an Environmental Audit conducted by DOE Headquarters, Office of Environmental Audit, in June 1991. An Action Plan, dated December 1991, was developed to address the findings. The Action Plan was approved by DOE Headquarters, Office of Environment, Safety and Health, in July 1992. This report provides status for each activity listed in the approved Action Plan. Of 48 findings identified in the August 1991 Environmental Audit Report, 4 required no action, 5 were combined with others and actions to correct 19 are complete. Although it appears no progress has been made since the last status report was issued, UMTRA has completed 89% of the findings identified, compared to 72% identified in the last status report. The table below lists the 20 findings where actions are still underway, the current projected completion date, the organization(s) responsible for taking action on the finding, and the UMTRA Project Off ice staff member assigned responsibility for the finding.

  13. Economic impact study of the Uranium Mill Tailings Remedial Action Project in Colorado: Colorado state fiscal year 1993

    SciTech Connect (OSTI)

    Not Available

    1993-12-01T23:59:59.000Z

    The Colorado economic impact study summarizes employment and economic benefits to the state from activities associated with the Uranium Mill Tailings Remedial Action (UMTRA) Project during Colorado state fiscal year 1993 (July 1, 1992, through June 30, 1993). To capture employment benefits, a questionnaire was distributed to subcontractor employees at the active UMTRA Project sites of Grand Junction, Rifle, and Gunnison, Colorado. An estimated 52 percent of the employees working on the UMTRA Project responded to this information request. Economic data were requested from each site prime subcontractor, as well as from the Remedial Action Contractor. The most significant benefits associated with the UMTRA Project in Colorado are summarized.

  14. Final audit report of remedial action construction at the UMTRA Project Mexican Hat, Utah -- Monument Valley, Arizona, sites

    SciTech Connect (OSTI)

    NONE

    1995-10-01T23:59:59.000Z

    The final audit report for remedial action at the Mexican Hat, Utah, Monument Valley, Arizona, Uranium Mill Tailings Remedial Action (UMTRA) Project sites consists of a summary of the radiological surveillances/audits, quality assurance (QA) in-process surveillances, and QA remedial action close-out inspections performed by the US Department of Energy (DOE) and the Technical Assistance Contractor (TAC); on-site construction reviews (OSCR) performed by the US Nuclear Regulatory Commission (NRC); and a surveillance performed by the Navajo Nation. This report refers to remedial action activities performed at the Mexican Hat, Utah--Monument Valley, Arizona, Uranium Mill Tailings Remedial Action (UMTRA) Project sites.

  15. Guidance for implementing the UMTRA Project long-term surveillance program

    SciTech Connect (OSTI)

    Not Available

    1992-09-01T23:59:59.000Z

    The US Nuclear Regulatory Commission (NRC) has issued a general license for the custody and long-term care of US Department of Energy (DOE) Uranium Mill Tailings Remedial Action (UMTRA) Project permanent disposal sites. The purpose of this general license is to ensure that the UMTRA disposal sites will be cared for in such a manner as to protect the public health and safety and the environment upon completion of remedial actions. The general license will be in effect for a disposal site when NRC accepts the disposal site long-term surveillance plan (LTSP) that meets the requirements of 10 CFR 40.27. The site LTSP describes in detail the long-term surveillance program, including any monitoring, maintenance, and emergency measures necessary to fulfill the conditions of the general license. This guidance document provides (1) instructions for preparing the disposal site LTSPs and (2) instructions for carrying out the UMTRA Project long-term surveillance program, including any monitoring that may be required. The information provided in this document also is in accordance with the regulatory requirements set forth in 40 CFR 192. On January 5, 1985, the US Tenth Circuit Court of Appeals remanded the groundwater standards, 40 CFR 192.02. Proposed groundwater standards were issued for comment on September 24, 1987 (52 FR 3600). When the groundwater standards become final, this document will be revised, as appropriate. This document also will be updated in response to any changes to 10 CFR 40, or in response to changes in the manner in which the long-term care of the licensed disposal sites is carried out.

  16. Guidance for implementing the UMTRA Project long-term surveillance program. Final report, Revision 1

    SciTech Connect (OSTI)

    Not Available

    1992-09-01T23:59:59.000Z

    The US Nuclear Regulatory Commission (NRC) has issued a general license for the custody and long-term care of US Department of Energy (DOE) Uranium Mill Tailings Remedial Action (UMTRA) Project permanent disposal sites. The purpose of this general license is to ensure that the UMTRA disposal sites will be cared for in such a manner as to protect the public health and safety and the environment upon completion of remedial actions. The general license will be in effect for a disposal site when NRC accepts the disposal site long-term surveillance plan (LTSP) that meets the requirements of 10 CFR 40.27. The site LTSP describes in detail the long-term surveillance program, including any monitoring, maintenance, and emergency measures necessary to fulfill the conditions of the general license. This guidance document provides (1) instructions for preparing the disposal site LTSPs and (2) instructions for carrying out the UMTRA Project long-term surveillance program, including any monitoring that may be required. The information provided in this document also is in accordance with the regulatory requirements set forth in 40 CFR 192. On January 5, 1985, the US Tenth Circuit Court of Appeals remanded the groundwater standards, 40 CFR 192.02. Proposed groundwater standards were issued for comment on September 24, 1987 (52 FR 3600). When the groundwater standards become final, this document will be revised, as appropriate. This document also will be updated in response to any changes to 10 CFR 40, or in response to changes in the manner in which the long-term care of the licensed disposal sites is carried out.

  17. DOE responses to CDH October 1993 comments on the Remedical Action Plan for the Naturita, Colorado, Umtra Site

    SciTech Connect (OSTI)

    NONE

    1996-10-01T23:59:59.000Z

    This document includes the October 1993 comments provided by the Colorado Department of Health (CDH) on the Department of Energy (DOE) Preliminary Final Remedial Action Plan for the Naturita, Colorado, UMTRA Site. DOE`s responses are included after each CDH comment.

  18. Site observational work plan for the UMTRA Project site at Monument Valley, Arizona

    SciTech Connect (OSTI)

    NONE

    1996-03-01T23:59:59.000Z

    The site observational work plan (SOWP) for the Monument Valley, Arizona, US Department of Energy (DOE) Uranium Mill Tailings Remedial Action(UMTRA) Project site is one of the first site-specific documents developed to achieve ground water compliance at the site. This SOWP applies information about the Monument Valley site to a regulatory compliance framework that identifies strategies that could be used to meet ground water compliance. The compliance framework was developed in the UMTRA Ground Water programmatic environmental impact statement (DOE, 1996). The DOE`s goal is to implement a cost-effective site strategy that complies with the US Environmental Protection Agency (EPA) ground water standards and protects human health and the environment. The compliance strategy that emerges in the final version of the SOWP will be evaluated in the site-specific environmental assessment to determine potential environmental impacts and provide stakeholders a forum for review and comment. When the compliance strategy is acceptable, it will be detailed in a remedial action plan that will be subject to review by the state and/or tribe and concurrence by the US Nuclear Regulatory Commission (NRC). Information for the preparation of this SOWP indicates active remediation is the most likely compliance strategy for the Monument Valley site. Additional data are needed to determine the most effective remediation technology.

  19. Site observational work plan for the UMTRA Project site at Spook, Wyoming

    SciTech Connect (OSTI)

    NONE

    1995-05-01T23:59:59.000Z

    The Spook, Wyoming, site observational work plan proposes site-specific activities to achieve compliance with Subpart B of 40 CFR Part 192 (1994) of the final US Environmental Protection Agency (EPA) ground water protection standards 60 FR 2854 (1995) at this Uranium Mill Tailing Remedial Action (UMTRA) Project site. This draft SOWP presents a comprehensive summary of existing site characterization data, a conceptual site model of the nature and extent of ground water contamination, exposure pathways, and potential impact to human health and the environment. Section 2.0 describes the requirements for meeting ground water standards at UMTRA Project sites. Section 3.0 defines past and current conditions, describes potential environmental and human health risks, and provides site-specific data that supports the selection of a proposed ground water compliance strategy. Section 4.0 provides the justification for selecting the proposed ground water compliance strategy based on the framework defined in the ground water programmatic environmental impact statement (PEIS).

  20. Site observational work plan for the UMTRA Project site at Monument Valley, Arizona

    SciTech Connect (OSTI)

    NONE

    1995-09-01T23:59:59.000Z

    The site observational work plan (SOWP) for the Monument Valley, Arizona, US Department of Energy (DOE) Uranium Mill Tailings Remedial Action (UMTRA) Project site is one of the first site-specific documents developed to achieve ground water compliance at the site. This SOWP applies information about the Monument Valley site to a regulatory compliance framework that identifies strategies that could be used to meet ground water compliance. The compliance framework was developed in the UMTRA Ground Water programmatic environmental impact statement (DOE, 1995). The DOE`s goal is to implement a cost-effective site strategy that complies with the US Environmental Protection Agency (EPA) ground water standards and protects human health and the environment. The compliance strategy that emerges in the final version of the SOWP will assess potential environmental impacts and provide stakeholder a forum for review and comment. When the compliance strategy is acceptable, it will be detailed in a remedial action plan that will be subject to review by the state and/or tribe and concurrence by the US Nuclear Regulatory Commission (NRC). Information available for the preparation of this SOWP indicates active remediation is the most likely compliance strategy for the Monument Valley site. Additional data are needed to determine the most effective remediation technology.

  1. Status of the ground water flow model for the UMTRA Project, Shiprock, New Mexico, site

    SciTech Connect (OSTI)

    Not Available

    1995-01-01T23:59:59.000Z

    A two-dimensional numerical model was constructed for the alluvial aquifer in the area of the Uranium Mill Tailings Remedial Action (UMTRA) Project Shiprock, New Mexico, site. This model was used to investigate the effects of various hydrologic parameters on the evolution of the ground water flow field. Results of the model are useful for defining uncertainties in the site conceptual model and suggesting data collection efforts to reduce these uncertainties. The computer code MODFLOW was used to simulate the two-dimensional flow of ground water in the alluvium. The escarpment was represented as a no-flow boundary. The San Juan River was represented with the MODFLOW river package. A uniform hydraulic conductivity distribution with the value estimated by the UMTRA Project Technical Assistance Contractor (TAC) and a uniform recharge distribution was used. Infiltration from the flowing artesian well was represented using the well package. The ground water flow model was calibrated to ground water levels observed in April 1993. Inspection of hydrographs shows that these levels are representative of typical conditions at the site.

  2. Implementation of UMTRA Project Environmental Audit Action Plan status report for period ending September 30, 1992

    SciTech Connect (OSTI)

    Not Available

    1992-09-01T23:59:59.000Z

    This report provides the status of implementation of corrective actions for findings made in an Environmental Audit conducted by DOE Headquarters, Office of Environmental Audit, in June 1991. An Action Plan, dated December 1991, was developed to address the findings. The Action Plan was approved by DOE Headquarters, Office of Environment, Safety and Health, in July 1992. This report provides status for each activity listed in the approved Action Plan. Of 48 findings identified in the August 1991 Environmental Audit Report, 4 required no action, 5 were combined with others and actions to correct 19 are complete. Although it appears no progress has been made since the last status report was issued, UMTRA has completed 89% of the findings identified, compared to 72% identified in the last status report. The table below lists the 20 findings where actions are still underway, the current projected completion date, the organization(s) responsible for taking action on the finding, and the UMTRA Project Off ice staff member assigned responsibility for the finding.

  3. Final report of the UMTRA independent technical review of TAC audit programs

    SciTech Connect (OSTI)

    Not Available

    1994-10-01T23:59:59.000Z

    This report details the findings of an Independent Technical Review (ITR) of practices and procedures for the Uranium Mill Tailings Remedial Action (UMTRA) Project audit program. The audit program is conducted by Jacobs Engineering Group Inc., the Technical Assistance Contractor (TAC) for the UMTRA Project. The purpose of the ITR was to ensure that the TAC audit program is effective and is conducted efficiently. The ITR was conducted from May 16-20, 1994. A review team observed audit practices in the field, reviewed the TAC audit program`s documentation, and discussed the program with TAC staff and management. The format of this report has been developed around EPA guidelines; they comprise most of the major section headings. Each section begins by identifying the criteria that the TAC program is measured against, then describing the approach used by the ITR team to measure each TAC audit program against the criteria. An assessment of each type of audit is then summarized for each component in the following order: Radiological audit summary; Health and safety audit summary; Environmental audit summary; Quality assurance audit summary.

  4. Supplement to the UMTRA Project water sampling and analysis plan, Maybell, Colorado

    SciTech Connect (OSTI)

    NONE

    1995-09-01T23:59:59.000Z

    This water sampling and analysis plan (WSAP) supplement supports the regulatory and technical basis for water sampling at the Maybell, Colorado, Uranium Mill Tailings Remedial Action (UMTRA) Project site, as defined in the 1994 WSAP document for Maybell (DOE, 1994a). Further, this supplement serves to confirm our present understanding of the site relative to the hydrogeology and contaminant distribution as well as our intention to continue to use the sampling strategy as presented in the 1994 WSAP document for Maybell. Ground water and surface water monitoring activities are derived from the US Environmental Protection Agency regulations in 40 CFR Part 192 (1994) and 60 CFR 2854 (1 995). Sampling procedures are guided by the UMTRA Project standard operating procedures (JEG, n.d.), the Technical Approach Document (DOE, 1989), and the most effective technical approach for the site. Additional site-specific documents relevant to the Maybell site are the Maybell Baseline Risk Assessment (currently in progress), the Maybell Remedial Action Plan (RAP) (DOE, 1994b), and the Maybell Environmental Assessment (DOE, 1995).

  5. Supplement to the UMTRA Project water sampling and analysis plan, Riverton, Wyoming

    SciTech Connect (OSTI)

    NONE

    1995-09-01T23:59:59.000Z

    This water sampling and analysis plan (WSAP) supplement supports the regulatory and technical basis for water sampling at the Riverton, Wyoming, Uranium Mill Tailings Remedial Action (UMTRA) Project site, as defined in the 1994 WSAP document for Riverton (DOE, 1994). Further, the supplement serves to confirm the Project`s present understanding of the site relative to the hydrogeology and contaminant distribution as well as the intent to continue to use the sampling strategy as presented in the 1994 WSAP document for Riverton. Ground water and surface water monitoring activities are derived from the US Environmental Protection Agency regulations in 40 CFR Part 192 and 60 FR 2854. Sampling procedures are guided by the UMTRA Project standard operating procedures (JEG, n.d.), the Technical Approach Document (DOE, 1989), and the most effective technical approach for the site. Additional site-specific documents relevant to the Riverton site are the Riverton Baseline Risk Assessment (BLRA) (DOE, 1995a) and the Riverton Site Observational Work Plan (SOWP) (DOE, 1995b).

  6. Preplanning guidance document for groundwater restoration. [Uranium Mill Tailings Remedial Action (UMTRA) Project

    SciTech Connect (OSTI)

    Not Available

    1991-06-01T23:59:59.000Z

    This document is intended to present decision makers on the Uranium Mill Tailings Remedial Action (UMTRA) Project with a strategy for evaluating the need for and accomplishing groundwater restoration at those UMTRA Project sites that will require restoration as specified in Subpart B of 40 CFR 192. A synopsis of the Uranium Mill Tailings Restoration Control Act (UMTRCA) and a discussion of the proposed US Environmental Protection Agency (EPA) groundwater cleanup standards in 40 CFR 192 are provided to define the regulatory basis of groundwater cleanup. Once the EPA groundwater standards are finalized, this document may be revised, depending on the changes in the final standards. A procedure for determining the need for groundwater restoration is outlined and a cost-effective strategy for selecting, designing, implementing, and evaluating appropriate restoration procedures is presented. The determination of the need for groundwater restoration is based on the EPA groundwater cleanup standards and must be compatible with and complementary to the National Environmental Policy Act (NEPA) process. Therefore, this document describes a programmatic approach for compliance with the NEPA process.

  7. Supplement to the UMTRA Project water sampling and analysis plan, Monument Valley, Arizona

    SciTech Connect (OSTI)

    NONE

    1995-09-01T23:59:59.000Z

    This water sampling and analysis plan (WSAP) supplement supports the regulatory and technical basis for water sampling at the Riverton, Wyoming, Uranium Mill Tailings Remedial Action (UMTRA) Project site, as defined in the 1994 WSAP document for Riverton (DOE, 1994). Further, the supplement serves to confirm the Project`s present understanding of the site relative to the hydrogeology and contaminant distribution as well as the intent to continue to use the sampling strategy as presented in the 1994 WSAP document for Riverton. Ground water and surface water monitoring activities are derived from the US Environmental Protection Agency regulations in 40 CFR Part 192 and 60 FR 2854. Sampling procedures are guided by the UMTRA Project standard operating procedures (JEG, n.d.), the Technical Approach Document (DOE, 1989), and the most effective technical approach for the site. Additional site-specific documents relevant to the Riverton site are the Riverton Baseline Risk Assessment (BLRA) (DOE, 1995a) and the Riverton Site Observational Work Plan (SOWP) (DOE, 1995b).

  8. Supplement to the UMTRA Project water sampling and analysis plan, Mexican Hat, Utah

    SciTech Connect (OSTI)

    NONE

    1995-09-01T23:59:59.000Z

    This water sampling and analysis plan (WSAP) supplement supports the regulatory and technical basis for water sampling at the Mexican Hat, Utah, Uranium Mill Tailings Remedial Action (UMTRA) Project site, as defined in the 1994 WSAP document for Mexican Hat (DOE, 1994). Further, the supplement serves to confirm our present understanding of the site relative to the hydrogeology and contaminant distribution as well as our intention to continue to use the sampling strategy as presented in the 1994 WSAP document for Mexican Hat. Ground water and surface water monitoring activities are derived from the US Environmental Protection Agency regulations in 40 CFR Part 192 (1991) and 60 FR 2854 (1995). Sampling procedures are guided by the UMTRA Project standard operating procedures (JEG, n.d.), the Technical Approach Document (DOE, 1989), and the most effective technical approach for the site. Additional site-specific documents relevant to the Mexican Hat site are the Mexican Hat Long-Term Surveillance Plan (currently in progress), and the Mexican Hat Site Observational Work Plan (currently in progress).

  9. UMTRA Surface Project management action process document. Final report: Revision 1

    SciTech Connect (OSTI)

    NONE

    1996-04-01T23:59:59.000Z

    A critical mission of the US Department of Energy (DOE) is the planning, implementation, and completion of environmental restoration (ER) programs at facilities that were operated by or in support of the former Atomic Energy Commission (AEC) from the late 1940s into the 1970s. Among these facilities are the 24 former uranium mill sites designed in the Uranium Mill Tailings Radiation Control Act (UMTRCA) of 1978 (42 USC {section} 7901 et seq.) Title 1 of the UMTRCA authorized the DOE to undertake remedial actions at these designated sites and associated vicinity properties (VP), which contain uranium mill tailings and other residual radioactive materials (RRM) derived from the processing sites. Title 2 of the UMTRCA addresses uranium mill sites that were licensed at the time the UMTRCA was enacted. Cleanup of these Title 2 sites is the responsibility of the licensees. The cleanup of the Title 1 sites has been split into two separate projects: the Surface Project, which deals with the mill buildings, tailings, and contaminated soils at the sites and VPs; and the Ground Water Project, which is limited to the contaminated ground water at the sites. This management action process (MAP) document discusses the Uranium Mill Tailings Remedial Action (UMTRA) Surface Project only; a separate MAP document has been prepared for the UMTRA Ground Water Project.

  10. DECHEM: A remedial planning tool for metallic contaminants in soil at UMTRA Project sites. Final report and users` guide

    SciTech Connect (OSTI)

    Not Available

    1989-03-01T23:59:59.000Z

    The DECHEM (DEcontamination of CHEMicals) method was developed for the Uranium Mill Tailings Remedial Action (UMTRA) Project to guide characterization and remedial planning for metals contamination in soils. This is necessary because non-radiological hazardous constituents may be more mobile than radium-226 (Ra-226), and hence may migrate more deeply into subpile soils (beneath tailings that are to be relocated) or into adjacent contaminated soils at UMTRA Project sites. The result is that remedial action to the Ra-226 excavation limit, as specified in the US Environmental Protection Agency (EPA) standards, may not adequately remove hazardous non-radiological contamination. Unmitigated, these contaminants in soil may cause health risks because of their presence in resuspended particles, their uptake by crops or fodder their seepage into aquifers used for drinking water or other possible exposure pathways. The DECHEM method was developed in response to the need for advanced planning for the remediation of chemical contaminants at UMTRA Project sites, and includes the following elements: Establishment of acceptable exposure rates for humans to chemicals, based on EPA guidelines or other toxicological literature. Modeling of chemical migration through environmental pathways from a remediated UMTRA Project site to humans. Determination of allowable residual concentrations (i.e., cleanup guidelines) for chemicals in soils that results in doses to humans that are below established acceptable exposure rates. The initial development and application of the DECHEM method has focused upon hazardous metallic contaminants such as arsenic, lead, molybdenum, and selenium, which are known to occur in elevated concentrations at some UMTRA Project sites.

  11. Rio Grande Compact (Texas)

    Broader source: Energy.gov [DOE]

    This legislation authorizes the state's entrance into the Rio Grande Compact, a joint agreement between the states of Colorado, New Mexico, and Texas. The compact is administered by the Rio Grande...

  12. Site observational work plan for the UMTRA Project site at Ambrosia Lake, New Mexico

    SciTech Connect (OSTI)

    Not Available

    1994-09-01T23:59:59.000Z

    The Ambrosia Lake Uranium Mill Tailings Remedial Action (UMTRA) Project site is within the Grants Mineral Belt and was one of numerous uranium mills supplied by many local mines. Ground water contamination at the site occurred as a result of uranium mill operations. The potential for impacts to human health and the environment from contaminated ground water currently does not exist. No domestic or livestock wells accessing ground water from the uppermost aquifer have been identified within a 5 mile radius from the site. Therefore, no current exposure pathways to humans, livestock, or wildlife exist, nor are any foreseen. The proposed ground water compliance strategy under consideration for application at the Ambrosia Lake site is to perform no remediation, based on the application of supplemental standards because the ground water has ``limited use.``

  13. Environmental Assessment of Ground Water Compliance at the Gunnison, Colorado, UMTRA Project Site

    SciTech Connect (OSTI)

    N /A

    2002-08-13T23:59:59.000Z

    The U.S. Department of Energy (DOE) is in the process of selecting a ground water compliance strategy for the Gunnison, Colorado, Uranium Mill Tailings Remedial Action (UMTRA) Project site. This Environmental Assessment (EA) discusses two alternatives and the effects associated with each. The two alternatives are (1) natural flushing coupled with institutional controls and continued monitoring and (2) no action. The compliance strategy must meet U.S. Environmental Protection Agency (EPA) ground water standards defined in Title 40 ''Code of Federal Regulations'' Part 192, Subpart B, in areas where ground water beneath and around the site is contaminated as a result of past milling operations. It has been determined that contamination in the ground water at the Gunnison site consists of soluble residual radioactive material (RRM) as defined in the Uranium Mill Tailings Radiation Control Act (UMTRCA).

  14. LM Completes the Grand Junction, Colorado, Site Historical Wall Display |

    Office of Environmental Management (EM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 111 1,613 122Commercial602 1,39732on ArmedManufacturingJune 17, 2015

  15. Lessons Learned: The Grand Junction Office Site Transfer to Private

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page onYouTube YouTube Note: Since the.pdfBreaking ofOil & Gas »of EnergyLearningMarch 2015 LessonsLearned:

  16. DOE - Office of Legacy Management -- Grand Junction Sites

    Office of Legacy Management (LM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOn AprilA group currentBradleyTable ofArizonaBuffalo -Elk RiverFrederickAZ 03

  17. Three-junction solar cell

    DOE Patents [OSTI]

    Ludowise, Michael J. (Cupertino, CA)

    1986-01-01T23:59:59.000Z

    A photovoltaic solar cell is formed in a monolithic semiconductor. The cell contains three junctions. In sequence from the light-entering face, the junctions have a high, a medium, and a low energy gap. The lower junctions are connected in series by one or more metallic members connecting the top of the lower junction through apertures to the bottom of the middle junction. The upper junction is connected in voltage opposition to the lower and middle junctions by second metallic electrodes deposited in holes 60 through the upper junction. The second electrodes are connected to an external terminal.

  18. UMTRA water sampling technical (peer) review. Responses to observations, comments, and recommendations submitted by C. Warren Ankerberg (Geraghty & Miller, Inc.)

    SciTech Connect (OSTI)

    NONE

    1993-08-01T23:59:59.000Z

    At the request of the Office of Independent Technical Review for the U.S. Department of Energy (DOE), Uranium Mill Tailings Remedial Action (UMTRA) Project, an independent technical review (peer review) was conducted during the period of September 15-17, 1992. The review was conducted by C. Warren Ankerberg (Geraghty & Miller, Inc., Tampa, Florida) and Don Messinger (Roy F. Weston, Inc., West Chester, Pennsylvania). The peer review included a review of written documentation [water sampling standard operating procedures (SOP)], an inspection of technical reports and other deliverables, a review of staff qualifications and training, and a field visit to evaluate the compliance of field procedures with SOPs. The approach of the peer reviewers was to verify that the program meets the following criteria: Reported results are traceable to and consistent with recorded data. The basic assumptions and acceptance criteria are valid. Data are traceable to their origin and to reported analytical results. The procedures employed are consistent both internally and externally with written SOPs and regulatory guidelines. Inferences and conclusions are soundly based. The procedures and/or reports generated present work that satisfies the local, state and/or Federal regulatory requirements as applicable. The approach is consistent with industry standards and/or state-of-the-art technology, as practical. The data generated by activities are legally defensible and technically sound. UMTRA staff are adequately trained and qualified for the work. This document is a response to the observations, comments, and recommendations submitted by C. Warren Ankerberg following his review. The format of this document is to present the findings and recommendations verbatim from Mr. Ankerberg`s report, followed by responses from the UMTRA Project staff. Included in the responses from the UMTRA Project staff are recommended changes in SOPs and strategies for implementing the changes.

  19. Analysis of infiltration through a clay radon barrier at an UMTRA disposal cell. Uranium Mill Tailings Remedial Action Project

    SciTech Connect (OSTI)

    Not Available

    1991-01-01T23:59:59.000Z

    An infiltration study was initiated in January 1988 to assess the percent saturation in, and infiltration through, clay radon barriers of typical Uranium Mill Tailings Remedial Action (UMTRA) Project disposal cells. Predicting infiltration through the radon barrier is necessary to evaluate whether the disposal cell will comply with the proposed US Environmental Protection Agency (EPA) groundwater protection standards (40 CFR 192). The groundwater standards require demonstrating that tailings seepage will not cause background concentrations or maximum concentration limits (MCLs) to be exceeded at the downgradient edge of the disposal facility (the point of compliance, or POC). This demonstration generally consists of incorporating the predicted seepage flux and the concentration of the specific hazardous constituents into a contaminant transport model, and predicting the resultant concentrations at the POC. The infiltration study consisted of a field investigation to evaluate moisture conditions in the radon barrier of the completed Shiprock, New Mexico, UMTRA Project disposal cell and previously completed UMTRA Project disposal cells at Clive, Utah, and Burrell, Pennsylvania. Coring was conducted to measure percent saturation profiles in the radon barriers at these disposal cells. In addition, a detailed investigation of the Shiprock radon barrier was conducted to establish the effects of meteorological stresses on moisture conditions in the filter layer and radon barrier. The Shiprock infiltration study was also intended to characterize hydraulic gradients and operational unsaturated hydraulic conductivities in the radon barrier.

  20. Economic impact study of the Uranium Mill Tailings Remedial Action project in Colorado: Colorado state fiscal year 1995

    SciTech Connect (OSTI)

    NONE

    1995-12-01T23:59:59.000Z

    This Colorado economic impact study summarizes employment and economic benefits to the state from activities associated with the Uranium Mill Tailings Remedial Action (UMTRA) Project during Colorado state fiscal year (FY) 1995 (1 July 1994 through 30 June 1995). To capture employment information, a questionnaire was distributed to subcontractor employees at the active UMTRA Project sites of Grand Junction, Gunnison, Maybell, Naturita, Rifle, and Slick Rock, Colorado. Economic data were requested from the Remedial Action Contractor (RAC), the Technical Assistance Contractor (TAC) and the US Department of Energy (DOE). The most significant benefits associated with the UMTRA Project in Colorado are summarized.

  1. Supplement to the UMTRA project water sampling and analysis plan, Slick Rock, Colorado

    SciTech Connect (OSTI)

    NONE

    1995-09-01T23:59:59.000Z

    The water sampling and analysis plan (WSAP) provides the regulatory and technical basis for ground water and surface water sampling at the Uranium Mill Tailings Remedial Action (UMTRA) Project Union Carbide (UC) and North Continent (NC) processing sites and the Burro Canyon disposal site near Slick Rock, Colorado. The initial WSAP was finalized in August 1994 and will be completely revised in accordance with the WSAP guidance document (DOE, 1995) in late 1996. This version supplements the initial WSAP, reflects only minor changes in sampling that occurred in 1995, covers sampling scheduled for early 1996, and provides a preliminary projection of the next 5 years of sampling and monitoring activities. Once surface remedial action is completed at the former processing sites, additional and more detailed hydrogeologic characterization may be needed to develop the Ground Water Program conceptual ground water model and proposed compliance strategy. In addition, background ground water quality needs to be clearly defined to ensure that the baseline risk assessment accurately estimated risks from the contaminants of potential concern in contaminated ground water at the UC and NC sites.

  2. Surface and subsurface cleanup protocol for radionuclides, Gunnison, Colorado, UMTRA project processing site. Final [report

    SciTech Connect (OSTI)

    Not Available

    1993-09-01T23:59:59.000Z

    Surface and subsurface soil cleanup protocols for the Gunnison, Colorado, processing sits are summarized as follows: In accordance with EPA-promulgated land cleanup standards (40 CFR 192), in situ Ra-226 is to be cleaned up based on bulk concentrations not exceeding 5 and 15 pCi/g in 15-cm surface and subsurface depth increments, averaged over 100-m{sup 2} grid blocks, where the parent Ra-226 concentrations are greater than, or in secular equilibrium with, the Th-230 parent. A bulk interpretation of these EPA standards has been accepted by the Nuclear Regulatory Commission (NRC), and while the concentration of the finer-sized soil fraction less than a No. 4 mesh sieve contains the higher concentration of radioactivity, the bulk approach in effect integrates the total sample radioactivity over the entire sample mass. In locations where Th-230 has differentially migrated in subsoil relative to Ra-226, a Th-230 cleanup protocol has been developed in accordance with Supplemental Standard provisions of 40 CFR 192 for NRC/Colorado Department of Health (CDH) approval for timely implementation. Detailed elements of the protocol are contained in Appendix A, Generic Protocol from Thorium-230 Cleanup/Verification at UMTRA Project Processing Sites. The cleanup of other radionuclides or nonradiological hazards that pose a significant threat to the public and the environment will be determined and implemented in accordance with pathway analysis to assess impacts and the implications of ALARA specified in 40 CFR 192 relative to supplemental standards.

  3. A review and assessment of variable density ground water flow effects on plume formation at UMTRA project sites

    SciTech Connect (OSTI)

    NONE

    1995-01-01T23:59:59.000Z

    A standard assumption when evaluating the migration of plumes in ground water is that the impacted ground water has the same density as the native ground water. Thus density is assumed to be constant, and does not influence plume migration. This assumption is valid only for water with relatively low total dissolved solids (TDS) or a low difference in TDS between water introduced from milling processes and native ground water. Analyses in the literature suggest that relatively minor density differences can significantly affect plume migration. Density differences as small as 0.3 percent are known to cause noticeable effects on the plume migration path. The primary effect of density on plume migration is deeper migration than would be expected in the arid environments typically present at Uranium Mill Tailings Remedial Action (UMTRA) Project sites, where little or no natural recharge is available to drive the plume into the aquifer. It is also possible that at some UMTRA Project sites, a synergistic affect occurred during milling operations, where the mounding created by tailings drainage (which created a downward vertical gradient) and the density contrast between the process water and native ground water acted together, driving constituents deeper into the aquifer than either process would alone. Numerical experiments were performed with the U.S. Geological Survey saturated unsaturated transport (SUTRA) model. This is a finite-element model capable of simulating the effects of variable fluid density on ground water flow and solute transport. The simulated aquifer parameters generally are representative of the Shiprock, New Mexico, UMTRA Project site where some of the highest TDS water from processing has been observed.

  4. Site observational work plan for the UMTRA Project site at Tuba City, Arizona

    SciTech Connect (OSTI)

    Not Available

    1994-09-01T23:59:59.000Z

    The requirements for ground water compliance for Uranium Mill Tailings Remedial Action (UMTRA) Project sites, including the Tuba City, Arizona, site, are found in the Uranium Mill Tailings Radiation Control Act; Subparts B and C of the U.S. Environmental Protection Agency`s Health and Environmental Protection Standards for Uranium and Thorium Mill Tailings (40 CFR 192 (1994)), and the associated proposed 1987 standards (52 FR 36000). During the surface remedial action, an estimated 1,400,000 cubic yards (yd{sup 3}) (1,100,000 cubic meters [m{sup 3}]) of uranium mill tailings and other contaminated materials were consolidated and stabilized in place in an unlined disposal cell covering 50 acres (20 hectares). The surface remedial action was completed in April 1990. Ground water beneath the Tuba City site was contaminated by subsurface migration of water from uranium ore processing activities. The main source of contaminants was water from the tailings piles that began in 1956 when the mill opened and ended in 1966 when the mill closed. 800,000 tons (725,000 tonnes) of uranium ore were processed onsite over a 10-year period. The wet tailings remaining after processing were placed as a slurry in three piles at the site. Water from these tailings then seeped into the ground and migrated downward to the ground water. The Tuba City site is currently in a post-stabilization, prelicensing status. The site is expected to remain in this status until licensed by the U.S. Nuclear Regulatory Commission (NRC) for long-term surveillance and maintenance. The preliminary ground water compliance strategy at the Tuba City site is active remediation-specific technology to be evaluated is in situ bioremediation. This selection was made because of the potential ability of bioremediation to reduce concentrations to lower levels than a conventional extraction system and to minimize disturbance of the water resource.

  5. Site observational work plan for the UMTRA Project Site at Tuba City, Arizona

    SciTech Connect (OSTI)

    None

    1994-09-01T23:59:59.000Z

    The requirements for ground water compliance for Uranium Mill Tailings Remedial Action (UMTRA) Project sites, including the Tuba City, Arizona, site, are found in the Uranium Mill Tailings Radiation Control Act; Subparts B and C of the U.S. Environmental Protection Agency`s Health and Environmental Protection Standards for Uranium and Thorium Mill Tailings (40 CFR 192 (1994)), and the associated proposed 1987 standards (52 FR 36000). During the surface remedial action, an estimated 1,400,000 cubic yards (yd{sup 3}) (1,100,000 cubic meters [m{sup 3}]) of uranium mill tailings and other contaminated materials were consolidated and stabilized in place in an unlined disposal cell covering 50 acres (20 hectares). The surface remedial action was completed in April 1990. Ground water beneath the Tuba City site was contaminated by subsurface migration of water from uranium ore processing activities. The main source of contaminants was water from the tailings piles that began in 1956 when the mill opened and ended in 1966 when the mill closed. A total of 800,000 tons (725,000 tonnes) of uranium ore were processed onsite over a 10-year period. Two processes were used to refine the ore: an acid leach process and a sodium carbonate alkaline process. Water from these tailings then seeped into the ground and migrated downward to the ground water. The Tuba City site is currently in a post-stabilization, prelicensing status. The preliminary ground water compliance strategy at the Tuba City site is active remediation. The specific technology to be evaluated is in situ bioremediation. This selection was made because of the potential ability of bioremediation to reduce concentrations to lower levels than a conventional extraction system and to minimize disturbance of the water resource.

  6. 2015 Race to Zero Competition Grand Winner and Grand Winner Finalist...

    Office of Environmental Management (EM)

    Grand Winner and Grand Winner Finalist Team Submissions 2015 Race to Zero Competition Grand Winner and Grand Winner Finalist Team Submissions Read the team submissions for the...

  7. UMTRA water sampling technical (peer) review: Responses to observations, comments, and recommendations submitted by Don Messinger (Roy F. Weston, Inc.)

    SciTech Connect (OSTI)

    NONE

    1993-08-01T23:59:59.000Z

    An independent technical review (peer review) was conducted during the period of September 15--17, 1992. The review was conducted by C. Warren Ankerberg (Geraghty and Miller, Inc., Tampa, Florida) and Don Messinger (Roy F. Weston, Inc., West Chester, Pennsylvania). The review was held at Jacobs Engineering in Albuquerque, New Mexico, and at the Shiprock, New Mexico, site. The peer review included a review of written documentation [water sampling standard operating procedures (SOP)], an inspection of technical reports and other deliverables, a review of staff qualifications and training, and a field visit to evaluate the compliance of field procedures with SOPS. Upon completion of the peer review, each reviewer independently prepared a report of findings from the review. The reports listed findings and recommended actions. This document responds to the observations, comments, and recommendations submitted by Don Messinger following his review. The format of this document is to present the findings and recommendations verbatim from Mr. Messinger`s report, followed by responses from the UMTRA Project staff. Included in the responses from the UMTRA Project staff are recommended changes in SOPs and strategies for implementing the charges.

  8. Rio Grande project partnerships

    E-Print Network [OSTI]

    Supercinski, Danielle

    2008-01-01T23:59:59.000Z

    for supporting hydrologic analysis and modeling. The information will help develop bi-national cooperation between Mexico and the United States concerning water in the Rio Grande Basin. It will also provide accurate and reli- able data necessary for analysis... municipal demands. With the population expected to double in the next 50 years, the urban water demands will increase proportionately. Story by Danielle Supercinski At the Cameron County Irrigation District No. 2 in San Benito, sluice gates inside...

  9. Rio Grande project partnerships

    E-Print Network [OSTI]

    Supercinski, Danielle

    2008-01-01T23:59:59.000Z

    ? financial and economic aspects to provide a life-cycle cost value that allows an accurate comparison with other desalination plants analyzed with the same technique and other water sources as well. With the success of RGBI, various partner- ships have... Rio Grande Valley agricultural producers to begin a large- scale, 10-year Agricultural Water Conservation Demonstration Initiative (ADI). Funded by the Texas Water Development Board, ADI gathers gathers comprehensive data to evaluate the impact...

  10. Mitigation and Monitoring Plan for impacted wetlands at the Gunnison UMTRA Project site, Gunnison, Colorado. Revision 1

    SciTech Connect (OSTI)

    Not Available

    1994-12-01T23:59:59.000Z

    The Gunnison, Colorado, abandoned uranium mill site is one site being cleaned up by the DOE under UMTRCA authority. This site`s contaminated material is being transported to a disposal site on US Bureau of Land Management (BLM) land east of Gunnison. Remedial action activities have temporarily disturbed 0.8 acre (ac) (0.3 hectares [ha]) of wetlands and permanently eliminated 4.3 ac (1.7 ha). As required by the Clean Water Act, the US Army Corps of Engineers (USACE) prepared a Section 404 Permit that addresses the loss of wetlands as a result of remedial action at the Gunnison UMTRA Project site. The 404 permit includes this report as an attachment and it describes the wetland mitigation and monitoring plan. The DOE formulated this plan in consultation with the BLM and the USACE. This report represents a revised version of the mitigation and monitoring plan (DOE, 1992b).

  11. Cleanup protocols when encountering thorium-230 at U.S. DOE Uranium Mill Tailings Remedial Action (UMTRA) Project sites

    SciTech Connect (OSTI)

    Miller, M.L.; Hylko, J.M.; Cornish, R.E.

    1995-12-31T23:59:59.000Z

    The passage of the Uranium Mill Tailings Radiation Control Act (UMTRCA) of 1978, established the regulatory framework, under which the US EPA charged with developing standards for the cleanup and disposal of tailings at 24 designated inactive uranium processing sites located in 10 states. 40 CFR 192.12 requires that the concentration of Ra-226 in land averaged over any area of 100 square meters shall not exceed the background level by more than 5 pCi/g, averaged over the first 15 cm of soil below the surface, 15 pCi/g, averaged over 15-cm-thick layers of soils more than 15 cm below the surface. However, Th-230 is not specifically addressed by the EPA in 40 CFR 192.12, which naturally decays with a half-life of 77,000 years to form Ra-226. Consequently, the cleanup of the initial Ra-226 contamination according to the standards will not necessarily mitigate against the eventual ingrowth of residual Ra-226 with time, due to the radioactive decay of residual Th-230. Therefore, to direct the excavation of residual Th-230, four generic protocols are being used at Uranium Mill Tailings Remedial Action (UMTRA) Project sites, as follows: Determining the allowable remaining concentration of Th-230 in surface and subsurface soils; Encountering Th-230 contamination in the unsaturated subsurface soil; Encountering Th-230 contamination in the saturated zone; and Verification sampling. The four generic protocols, developed in conjunction with the supplemental standards provision, ensure protection of the general public by reducing exposures to levels that are As Low As Reasonably Achievable, while considering practical measures necessary to excavate Th-230 under conditions encountered at the UMTRA Project site.

  12. Junction Plasmon-Induced Molecular Reorientation. | EMSL

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Junction Plasmon-Induced Molecular Reorientation. Junction Plasmon-Induced Molecular Reorientation. Abstract: Time and frequency dependent intensity variations in sequences of...

  13. In situ testing to determination field-saturated hydraulic conductivity of UMTRA Project disposal cell covers, liners, and foundation areas. Special study

    SciTech Connect (OSTI)

    Not Available

    1994-02-01T23:59:59.000Z

    This special study was conducted to prepare a guidance document for selecting in situ hydraulic conductivity (K) tests, comparing in situ testing methods, and evaluating the results of such tests. This report may be used as a practical decision-making tool by the Uranium Mill Tailings Remedial Action (UMTRA) Project staff to determine which testing method will most efficiently achieve the field-saturated K results needed for long-term planning. A detailed section on near-surface test methods discusses each method which may be applicable to characterization of UMTRA disposal cell covers, liners and foundation materials. These potentially applicable test methods include the sealed double-ring infiltrometer (SDRI), the air-entry permeameter (AEP), the guelph permeameter, the two-stage borehole technique (TSB), the pressure infiltrometer, and the disk permeameter. Analytical solutions for these methods are provided, and limitations of these solutions are discussed, and a description of testing equipment design and installation are provided.

  14. Contents of environmental impact statements prepared for the Uranium Mill Tailings Remedial Action Project. [Uranium Mill Tailings Remedial Action (UMTRA) Project

    SciTech Connect (OSTI)

    Not Available

    1986-01-01T23:59:59.000Z

    This document presents two versions of the outline for the environmental impact statements (EISS) to be prepared for the Uranium Mill Tailings Remedial Action (UMTRA) Project. The first displays the basic structure of the statements; it lists only the titles of sections. The second is a guide to the contents of the statements which provides, under each title, a brief summary of contents. The outline is intended to comply with the planning requirements and the definitions of terms established by the Council on Environmental Quality as well as DOE Order 5440.lB (Implementation of the National Environmental Policy Act), and compliance with Floodplain/Wetlands Environmental Review Requirements. These requirements and definitions are implicity part of the outline. The outline presented in this document will guide the preparation of EISs Guidelines for preparation of environmental assessments for the UMTRA Project are available.

  15. Work plan for monitor well installation water and sediment sample collection aquifer testing and topographic surveying at the Riverton, Wyoming, UMTRA Project Site

    SciTech Connect (OSTI)

    NONE

    1995-06-01T23:59:59.000Z

    Investigations conducted during preparation of the site observational work plan (SOWP) at the Uranium Mill Tailings Remedial Action (UMTRA) Project site support a proposed natural flushing ground water compliance strategy, with institutional controls. However, additional site-specific data are needed to reduce uncertainties in order to confirm the applicability and feasibility of this proposed compliance strategy option. This proposed strategy will be analyzed in the site-specific environmental assessment. The purpose of this work plan is to summarize the data collection objectives to fill those data needs, describe the data collection activities that will be undertaken to meet those objectives, and elaborate on the data quality objectives which define the procedures that will be followed to ensure that the quality of these data meet UMTRA Project needs.

  16. Rate-limited U(VI) desorption during a small-scale tracer test in a hetereogeneous uranium contaminated aquifer

    E-Print Network [OSTI]

    Fox, P.M.

    2013-01-01T23:59:59.000Z

    Work Plan for the UMTRA project Old Rifle site, GrandMill Tailings Remedial Action (UMTRA) sites and the Savannahof the contamination at the UMTRA sites lies within shallow

  17. UMTRA Project remedial action planning and disposal cell design to comply with the proposed EPA (Environmental Protection Agency) standards (40 CFR Part 192)

    SciTech Connect (OSTI)

    Not Available

    1989-01-01T23:59:59.000Z

    The Uranium Mill Tailings Remedial Action (UMTRA) Project involves stabilizing 24 inactive uranium mill tailings piles in 10 states. Remedial work must meet standards established by the US Environmental Protection Agency (EPA). Remedial action must be designed and constructed to prevent dispersion of the tailings and other contaminated materials, and must prevent the inadvertent use of the tailings by man. This report is prepared primarily for distribution to parties involved in the UMTRA Project, including the US Nuclear Regulatory Commission (NRC), and states and tribes. It is intended to record the work done by the DOE since publication of the proposed EPA groundwater protection standards, and to show how the DOE has attempted to respond and react in a positive way to the new requirements that result from the proposed standards. This report discusses the groundwater compliance strategies now being defined and implemented by the DOE, and details the changes in disposal cell designs that result from studies to evaluate ways to facilitate compliance with the proposed EPA groundwater protection standards. This report also serves to record the technical advances, planning, and progress made on the UMTRA Project since the appearance of the proposed EPA groundwater protection standards. The report serves to establish, document, and disseminate technical approaches and engineering and groundwater information to people who may be interested or involved in similar or related projects. 24 refs., 27 figs., 8 tabs.

  18. Ground Water Compliance Action Plan for the Old Rifle, Colorado, UMTRA Project Site

    Office of Legacy Management (LM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOn AprilA groupTuba City, Arizona, DisposalFourthNrr-osams ADMIN551 - g 7 s %GrandD

  19. Uranium Mill Tailings Remedial Action Project 1994 environmental report

    SciTech Connect (OSTI)

    NONE

    1995-08-01T23:59:59.000Z

    This annual report documents the Uranium Mill Tailings Remedial Action (UMTRA) Project environmental monitoring and protection program. The UMTRA Project routinely monitors radiation, radioactive residual materials, and hazardous constituents at associated former uranium tailings processing sites and disposal sites. At the end of 1994, surface remedial action was complete at 14 of the 24 designated UMTRA Project processing sites: Canonsburg, Pennsylvania; Durango, Colorado; Grand Junction, Colorado; Green River Utah, Lakeview, Oregon; Lowman, Idaho; Mexican Hat, Utah; Riverton, Wyoming; Salt Lake City, Utah; Falls City, Texas; Shiprock, New Mexico; Spook, Wyoming, Tuba City, Arizona; and Monument Valley, Arizona. Surface remedial action was ongoing at 5 sites: Ambrosia Lake, New Mexico; Naturita, Colorado; Gunnison, Colorado; and Rifle, Colorado (2 sites). Remedial action has not begun at the 5 remaining UMTRA Project sites that are in the planning stage. Belfield and Bowman, North Dakota; Maybell, Colorado; and Slick Rock, Colorado (2 sites). The ground water compliance phase of the UMTRA Project started in 1991. Because the UMTRA Project sites are.` different stages of remedial action, the breadth of the UMTRA environmental protection program differs from site to site. In general, sites actively undergoing surface remedial action have the most comprehensive environmental programs for sampling media. At sites where surface remedial action is complete and at sites where remedial action has not yet begun, the environmental program consists primarily of surface water and ground water monitoring to support site characterization, baseline risk assessments, or disposal site performance assessments.

  20. Public affairs plan

    SciTech Connect (OSTI)

    NONE

    1995-09-01T23:59:59.000Z

    The purpose of the Uranium Mill Tailings Remedial Action (UMTRA) Project Public Affairs Plan is to establish goals for the fiscal year (FY) 1996 UMTRA Project public affairs program and to identify specific activities to be conducted during the year. It describes the roles of various agencies involved in the public affairs program and defines the functions of the UMTRA Project Technical Assistance Contractor (TAC) Public Affairs Department. It replaces the FY 1995 Public Affairs Plan (DOE/AL/62350-154). The plan also describes the US Department of Energy`s (DOE) plans to keep stakeholders and other members of the public informed about UMTRA Project policies, plans, and activities, and provide opportunities for stakeholders and interested segments of the public to participate in UMTRA Project decision-making processes. The plan applies to the UMTRA Project Team; the DOE Grand Junction Projects Office (GJPO); the DOE Albuquerque Operations Office, Office of Public Affairs (OPA); the TAC; the UMTRA Project Remedial Action Contractor (RAC); and other cooperating agencies.

  1. Josephson junction Q-spoiler

    DOE Patents [OSTI]

    Clarke, J.; Hilbert, C.; Hahn, E.L.; Sleator, T.

    1986-03-25T23:59:59.000Z

    An automatic Q-spoiler comprising at least one Josephson tunnel junction connected in an LC circuit for flow of resonant current therethrough. When in use in a system for detecting the magnetic resonance of a gyromagnetic particle system, a high energy pulse of high frequency energy irradiating the particle system will cause the critical current through the Josephson tunnel junctions to be exceeded, causing the tunnel junctions to act as resistors and thereby damp the ringing of the high-Q detection circuit after the pulse. When the current has damped to below the critical current, the Josephson tunnel junctions revert to their zero-resistance state, restoring the Q of the detection circuit and enabling the low energy magnetic resonance signals to be detected.

  2. Josephson junction Q-spoiler

    DOE Patents [OSTI]

    Clarke, John (Berkeley, CA); Hilbert, Claude (Austin, TX); Hahn, Erwin L. (Berkeley, CA); Sleator, Tycho (Berkeley, CA)

    1988-01-01T23:59:59.000Z

    An automatic Q-spoiler comprising at least one Josephson tunnel junction connected in an LC circuit for flow of resonant current therethrough. When in use in a system for detecting the magnetic resonance of a gyromagnetic particle system, a high energy pulse of high frequency energy irradiating the particle system will cause the critical current through the Josephson tunnel junctions to be exceeded, causing the tunnel junctions to act as resistors and thereby damp the ringing of the high-Q detection circuit after the pulse. When the current has damped to below the critical current, the Josephson tunnel junctions revert to their zero-resistance state, restoring the Q of the detection circuit and enabling the low energy magnetic resonance signals to be detected.

  3. An assessment of potential hydrologic and ecologic impacts of constructing mitigation wetlands, Rifle, Colorado, UMTRA project sites

    SciTech Connect (OSTI)

    NONE

    1995-04-01T23:59:59.000Z

    This-assessment examines the consequences and risks that could result from the proposed construction of mitigation wetlands at the New and Old Rifle Uranium Mill Tailings Remedial Action (UMTRA) Project sites near Rifle, Colorado. Remediation of surface contamination at those sites is now under way. Preexisting wetlands at or near the Old and New Rifle sites have been cleaned up, resulting in the loss of 0.7 and 10.5 wetland acres (ac) (0.28 and 4.2 hectares [ha]) respectively. Another 9.9 ac (4.0 ha) of wetlands are in the area of windblown contamination west of the New Rifle site. The US Army Corps of Engineers (USACE) has jurisdiction over the remediated wetlands. Before remedial action began, and before any wetlands were eliminated, the USACE issued a Section 404 Permit that included a mitigation plan for the wetlands to be lost. The mitigation plan calls for 34.2 ac (1 3.8 ha) of wetlands to be constructed at the south end and to the west of the New Rifle site. The mitigation wetlands would be constructed over and in the contaminated alluvial aquifer at the New Rifle site. As a result of the hydrologic characteristics of this aquifer, contaminated ground water would be expected to enter the environment through the proposed wetlands. A preliminary assessment was therefore required to assess any potential ecological risks associated with constructing the mitigation wetlands at the proposed location.

  4. Grand Challenge Portfolio: Driving Innovations in Industrial...

    Broader source: Energy.gov (indexed) [DOE]

    Documents & Publications Grand Challenge Portfolio: Driving Innovations in Industrial Energy Efficiency, January 2011 - pg 8 Grand Challenge Portfolio: Driving Innovations in...

  5. Grand Challenge Portfolio: Driving Innovations in Industrial...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    9 Grand Challenge Portfolio: Driving Innovations in Industrial Energy Efficiency, January 2011 - pg 9 grandchallengesportfoliopg9.pdf More Documents & Publications Grand...

  6. Grand Challenge Portfolio: Driving Innovations in Industrial...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    6 Grand Challenge Portfolio: Driving Innovations in Industrial Energy Efficiency, January 2011 - pg 6 grandchallengesportfoliopg6.pdf More Documents & Publications Grand...

  7. Grand Challenge Portfolio: Driving Innovations in Industrial...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    8 Grand Challenge Portfolio: Driving Innovations in Industrial Energy Efficiency, January 2011 - pg 8 grandchallengesportfoliopg8.pdf More Documents & Publications Grand...

  8. Nuclear Proliferation and Grand Challenges

    ScienceCinema (OSTI)

    McCarthy, Kathy

    2013-05-28T23:59:59.000Z

    Nuclear engineer Dr. Kathy McCarthy leads systems analysis. She talks about proliferation and the grand challenges of nuclear R&D. For more information about INL energy research, visit http://www.facebook.com/idahonationallaboratory.

  9. Economic impact study of the Uranium Mill Tailings Remedial Action Project in Colorado: Colorado state fiscal year 1994

    SciTech Connect (OSTI)

    Not Available

    1994-11-01T23:59:59.000Z

    The Colorado economic impact study summarizes employment and economic benefits to the state from activities associated with the Uranium Mill Tailings Remedial Action (UMTRA) Project during Colorado state fiscal year 1994. To capture employment information, a questionnaire was distributed to subcontractor employees at the active UMTRA Project sites of Grand Junction, Naturita, Gunnison, and Rifle, Colorado. Economic data were requested from each site prime subcontractor, as well as from the Remedial Action Contractor. The most significant benefits associated with the UMTRA Project in Colorado are summarized. This study assesses benefits associated with the Grand Junction, Gunnison, Naturita, and Rifle UMTRA Projects sites for the 1-year period under study. Work at the Naturita site was initiated in April 1994 and involved demolition of buildings at the processing site. Actual start-up of remediation of Naturita is planned to begin in the spring of 1995. Work at the Slick Rock and Maybell sites is expected to begin in 1995. The only current economic benefits associated with these sites are related to UMTRA Project support work.

  10. Colorado economic impact study on the Uranium Mill Tailings Remedial Action Project in Colorado: Colorado state fiscal year 1993

    SciTech Connect (OSTI)

    Not Available

    1993-11-12T23:59:59.000Z

    The Colorado economic impact study summarizes employment and economic benefits to the state from activities associated with the Uranium Mill Tailings Remedial Action (UMTRA) Project during Colorado state fiscal year (FY) 1993. To capture employment benefits, a questionnaire was distributed to subcontractor employees at the active UMTRA Project sites of Grand Junction, Rifle, and Gunnison, Colorado. An estimated 52 percent of the employees working on the UMTRA Project responded to this information request. Economic data were requested from each prime subcontractor, as well as from the Remedial Action Contractor. The most significant benefits associated with the UMTRA Project in Colorado are: Direct employment was estimated at 894 workers; An estimated 89 percent of all direct employment was local; Secondary employment resulting from remedial action at the active Colorado UMTRA Project sites and the Grand Junction vicinity property program is estimated at 546 workers. Total employment (direct and secondary) is estimated at 1440 workers for the period of study (July 1, 1992, to June 30, 1993). An estimated $24.1 million was paid in wages to UMTRA workers in Colorado during FY1993; Direct and secondary wage earnings were estimated at $39.9 million; Income tax payments to the state of Colorado were estimated at $843,400 during FY1993; The gross economic impact of UMTRA Project activities in the state of Colorado is estimated at $70 million during the 1-year study period; and the net economic benefit to the state of Colorado was estimated at $57.5 million, or $5.90 per dollar of funding provided by Colorado. This figure includes both direct and secondary benefits but does not include the impact of alternative uses of the state funding.

  11. Grand Rip and Grand Bang/Crunch cosmological singularities

    E-Print Network [OSTI]

    L. Fernndez-Jambrina

    2015-01-26T23:59:59.000Z

    The present accelerated expansion of the universe has enriched the list of possible scenarios for its fate, singular or not. In this paper a unifying framework for analyzing such behaviors is proposed, based on generalized power and asymptotic expansions of the barotropic index $w$, or equivalently of the deceleration parameter $q$, in terms of the time coordinate. Besides well known singular and non-singular future behaviors, other types of strong singularities appear around the phantom divide in flat models, with features similar to those of big rip or big bang/crunch, which we have dubbed grand rip and grand bang/crunch respectively, since energy density and pressure diverge faster than $t^{-2}$ in coordinate time. In addition to this, the scale factor does not admit convergent generalized power series around these singularities with a finite number of terms with negative powers.

  12. Role of magnetic anisotropy in spin-filter junctions

    E-Print Network [OSTI]

    Chopdekar, R.V.

    2011-01-01T23:59:59.000Z

    and azimuthal angle for a 2 nm MCO based junction. Figure 1.4 (CCO) or MnCr 2 O 4 (MCO)- both of which are isostructuralin CCO junctions compared to MCO junctions. Detailed studies

  13. Superconducting Tunnel Junctions as Direct Detectors for Submillimeter Astronomy

    E-Print Network [OSTI]

    Superconducting Tunnel Junctions as Direct Detectors for Submillimeter Astronomy A Dissertation 2008 by John Daniel Teufel. All rights reserved. #12;Abstract Superconducting Tunnel Junctions on the of performance of superconducting tunnel junctions (STJ) as direct detectors for submillimeter radiation. Over

  14. Grande

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville Power AdministrationField8,Dist.NewofGeothermal Heat PumpJorgeAtlGrad.Employee,Dedication

  15. Method for shallow junction formation

    DOE Patents [OSTI]

    Weiner, Kurt H. (San Jose, CA)

    1996-01-01T23:59:59.000Z

    A doping sequence that reduces the cost and complexity of forming source/drain regions in complementary metal oxide silicon (CMOS) integrated circuit technologies. The process combines the use of patterned excimer laser annealing, dopant-saturated spin-on glass, silicide contact structures and interference effects creates by thin dielectric layers to produce source and drain junctions that are ultrashallow in depth but exhibit low sheet and contact resistance. The process utilizes no photolithography and can be achieved without the use of expensive vacuum equipment. The process margins are wide, and yield loss due to contact of the ultrashallow dopants is eliminated.

  16. Phonon Bottleneck in Graphene-Based Josephson Junctions at Millikelvin...

    Office of Scientific and Technical Information (OSTI)

    Phonon Bottleneck in Graphene-Based Josephson Junctions at Millikelvin Temperatures Citation Details Title: Phonon Bottleneck in Graphene-Based Josephson Junctions at Millikelvin...

  17. adherens junction formation: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    of aluminum tunnel junctions Our recent work has involved fabrication of superconducting aluminum tunnel junctions for use; W. Barber et al. 2. PROCEDURE Our tunnel...

  18. Grand Junction Office Founder Honored at the Philip C. Leahy Memorial Park

    Broader source: Energy.gov (indexed) [DOE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33Frequently20,000 RussianBy: Thomas P. D'Agostino,Glen Wattman - Director,Dedication and Open House

  19. DOE/Grand Junction Office Bluewater LTSP July 1997 Doc. No. S00012AA, Page iii

    Office of Legacy Management (LM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOn AprilA group currentBradleyTableSelling7111A LithologicProcessing SiteSurface1 Rev.I

  20. Monitoring of the Airport Calibration Pads at Walker Field, Grand Junction,

    Energy Savers [EERE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directed offOCHCO2:Introduction toManagement of the NationalPennsylvania | Department of EnergyColorado,

  1. Data Compendium for the Logging Test Pits at the ERDA Grand Junction

    Office of Environmental Management (EM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 1112011AT&T,Office of Policy, OAPMMilestone | DepartmentEACompound (December 1975) |

  2. DOE - Office of Legacy Management -- Climax Uranium Co Grand Junction Mill

    Office of Legacy Management (LM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOn AprilA group currentBradleyTable ofArizonaBuffalo - NYBowen LabSouth,

  3. LGRJ Interim Long-Term Surveillance Plan for the Cheney Disposal Site Near Grand Junction, Colorado

    Office of Legacy Management (LM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOn AprilA groupTuba City, Arizona, DisposalFourthNrr-osams ADMIN551 - g 7635U: .'j', J o R-

  4. Quantum Junction Solar Cells Jiang Tang,,

    E-Print Network [OSTI]

    Quantum Junction Solar Cells Jiang Tang,, Huan Liu,, David Zhitomirsky, Sjoerd Hoogland, Xihua, 1037 Luoyu Road, Wuhan, Hubei 430074, China Department of Electrical and Computer Engineering-type and p-type materials to create the first quantum junction solar cells. We present a family

  5. Savings Along the Rio Grande

    E-Print Network [OSTI]

    Supercinski, Danielle

    2007-01-01T23:59:59.000Z

    -feet of water per year from canal replacement, lining and/or seepage- loss testing. In addition, technical support from Extension engineers have saved districts more than $180,000 on engineering services. On-farm studies resulted in an average 25 percent...tx H2O | pg. 22 Conserving water is vital for the Rio GrandeBasin, one of the most productive agriculturalareas in the United States. Irrigated agricul- ture claims 85 percent of its water, and urban water use is expected to double in the next 50...

  6. Mississippi Nuclear Profile - Grand Gulf

    U.S. Energy Information Administration (EIA) Indexed Site

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5 Tables July 1996 Energy Information Administration Office of Coal,CubicWithdrawals6,992 6,895Vehicle FuelFeet) DecadetotalGrand

  7. UMTRA Ground Water Project

    Office of Legacy Management (LM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOn AprilA groupTuba City, Arizona,Site Operations Guide Doc.5 R A D ISaltVerification

  8. UMTRA Ground Water Project

    Office of Legacy Management (LM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOn AprilA groupTuba City, Arizona,Site Operations Guide Doc.5 R A D

  9. EV Everywhere Grand Challenge - Charging Infrastructure Enabling...

    Office of Environmental Management (EM)

    Charging Infrastructure Enabling Flexible EV Design EV Everywhere Grand Challenge - Charging Infrastructure Enabling Flexible EV Design Presentation given at the EV Everywhere...

  10. Tunnel junction multiple wavelength light-emitting diodes

    DOE Patents [OSTI]

    Olson, Jerry M. (Lakewood, CO); Kurtz, Sarah R. (Golden, CO)

    1992-01-01T23:59:59.000Z

    A multiple wavelength LED having a monolithic cascade cell structure comprising at least two p-n junctions, wherein each of said at least two p-n junctions have substantially different band gaps, and electrical connector means by which said at least two p-n junctions may be collectively energized; and wherein said diode comprises a tunnel junction or interconnect.

  11. Tunnel junction multiple wavelength light-emitting diodes

    DOE Patents [OSTI]

    Olson, J.M.; Kurtz, S.R.

    1992-11-24T23:59:59.000Z

    A multiple wavelength LED having a monolithic cascade cell structure comprising at least two p-n junctions, wherein each of said at least two p-n junctions have substantially different band gaps, and electrical connector means by which said at least two p-n junctions may be collectively energized; and wherein said diode comprises a tunnel junction or interconnect. 5 figs.

  12. Thermoelectric efficiency of critical quantum junctions

    E-Print Network [OSTI]

    Mihail Mintchev; Luca Santoni; Paul Sorba

    2013-10-30T23:59:59.000Z

    We derive the efficiency at maximal power of a scale-invariant (critical) quantum junction in exact form. Both Fermi and Bose statistics are considered. We show that time-reversal invariance is spontaneously broken. For fermions we implement a new mechanism for efficiency enhancement above the Curzon-Ahlborn bound, based on a shift of the particle energy in each heat reservoir, proportional to its temperature. In this setting fermionic junctions can even reach at maximal power the Carnot efficiency. The bosonic junctions at maximal power turn out to be less efficient then the fermionic ones.

  13. Cyber Security Grand Challenges and Prognosis

    E-Print Network [OSTI]

    Sandhu, Ravi

    Cyber Security Grand Challenges and Prognosis Prof. Ravi Sandhu Executive Director and Institute for Cyber Security Executive Director and Endowed Chair ravi.sandhu@utsa.edu www.profsandhu.com www.ics.utsa.edu Ravi Sandhu World-Leading Research with Real Cyber Security Grand Challenges and Prognosis Prof. Ravi

  14. Proton Hexality in Local Grand Unification

    E-Print Network [OSTI]

    Stefan Forste; Hans Peter Nilles; Saul Ramos-Sanchez; Patrick K. S. Vaudrevange

    2010-09-03T23:59:59.000Z

    Proton hexality is a discrete symmetry that avoids the problem of too fast proton decay in the supersymmetric extension of the standard model. Unfortunately it is inconsistent with conventional grand unification. We show that proton hexality can be incorporated in the scheme of "Local Grand Unification" discussed in the framework of model building in (heterotic) string theory.

  15. Multi-junction solar cell device

    DOE Patents [OSTI]

    Friedman, Daniel J. (Lakewood, CO); Geisz, John F. (Wheat Ridge, CO)

    2007-12-18T23:59:59.000Z

    A multi-junction solar cell device (10) is provided. The multi-junction solar cell device (10) comprises either two or three active solar cells connected in series in a monolithic structure. The multi-junction device (10) comprises a bottom active cell (20) having a single-crystal silicon substrate base and an emitter layer (23). The multi-junction device (10) further comprises one or two subsequent active cells each having a base layer (32) and an emitter layer (23) with interconnecting tunnel junctions between each active cell. At least one layer that forms each of the top and middle active cells is composed of a single-crystal III-V semiconductor alloy that is substantially lattice-matched to the silicon substrate (22). The polarity of the active p-n junction cells is either p-on-n or n-on-p. The present invention further includes a method for substantially lattice matching single-crystal III-V semiconductor layers with the silicon substrate (22) by including boron and/or nitrogen in the chemical structure of these layers.

  16. UNIVERSIDADE FEDERAL DO RIO GRANDE DO NORTE TELECOM PARISTECH

    E-Print Network [OSTI]

    Paris-Sud XI, Universit de

    UNIVERSIDADE FEDERAL DO RIO GRANDE DO NORTE TELECOM PARISTECH METAMATERIAL INSPIRED IMPROVED #12;i UNIVERSIDADE FEDERAL DO RIO GRANDE DO NORTE TELECOM PARISTECH Metamaterial Inspired Improved

  17. Grand Challenge for Basic and Applied Research in Hydrogen Storage...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Storage: Statement of Objectives Grand Challenge for Basic and Applied Research in Hydrogen Storage: Statement of Objectives Statement of objectives for the Grand Challenge for...

  18. 'Grand Challenge' for Basic and Applied Research in Hydrogen...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    'Grand Challenge' for Basic and Applied Research in Hydrogen Storage Solicitation 'Grand Challenge' for Basic and Applied Research in Hydrogen Storage Solicitation DOE is issuing a...

  19. EV Everywhere EV Everywhere Grand Challenge - Electric Drive...

    Energy Savers [EERE]

    EV Everywhere Grand Challenge - Electric Drive (Power Electronics and Electric Machines) Workshop Agenda EV Everywhere EV Everywhere Grand Challenge - Electric Drive (Power...

  20. EV Everywhere Grand Challenge - Electric Drive (Power Electronics...

    Broader source: Energy.gov (indexed) [DOE]

    Drive Workshop EV Everywhere EV Everywhere Grand Challenge - Electric Drive (Power Electronics and Electric Machines) Workshop Agenda EV Everywhere Grand Challenge - Battery...

  1. EV Everywhere Grand Challenge - Battery Workshop attendees list...

    Office of Environmental Management (EM)

    More Documents & Publications EV Everywhere Grand Challenge - Electric Drive (Power Electronics and Electric Machines) Workshop EV Everywhere Grand Challenge Overview EV...

  2. Supersymmetry and supergravity: Phenomenology and grand unification

    SciTech Connect (OSTI)

    Arnowitt, R. [Texas A& M Univ., College Station, TX (United States)]|[Superconducting Super Collider Lab., Dallas, TX (United States); Nath, P. [Northeastern Univ., Boston, MA (United States). Dept. of Physics

    1993-12-31T23:59:59.000Z

    A survey is given of supersymmetry and supergravity and their phenomenology. Some of the topics discussed are the basic ideas of global supersymmetry, the minimal supersymmetric Standard Model (MSSM) and its phenomenology, the basic ideas of local supersymmetry (supergravity), grand unification, supersymmetry breaking in supergravity grand unified models, radiative breaking of SU(2) {times} U(1), proton decay, cosmological constraints, and predictions of supergravity grand unified models. While the number of detailed derivations are necessarily limited, a sufficient number of results are given so that a reader can get a working knowledge of this field.

  3. Grand Coulee Transmission Line Replacement Project

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    by the Bureau of Reclamation to design and construct six new 500-kV overhead transmission lines at Grand Coulee Dam. BPA will replace the existing underground transmission...

  4. Junction-side illuminated silicon detector arrays

    DOE Patents [OSTI]

    Iwanczyk, Jan S.; Patt, Bradley E.; Tull, Carolyn

    2004-03-30T23:59:59.000Z

    A junction-side illuminated detector array of pixelated detectors is constructed on a silicon wafer. A junction contact on the front-side may cover the whole detector array, and may be used as an entrance window for light, x-ray, gamma ray and/or other particles. The back-side has an array of individual ohmic contact pixels. Each of the ohmic contact pixels on the back-side may be surrounded by a grid or a ring of junction separation implants. Effective pixel size may be changed by separately biasing different sections of the grid. A scintillator may be coupled directly to the entrance window while readout electronics may be coupled directly to the ohmic contact pixels. The detector array may be used as a radiation hardened detector for high-energy physics research or as avalanche imaging arrays.

  5. Theory of Proximity Effect in Junctions with Unconventional Superconductors

    E-Print Network [OSTI]

    Fominov, Yakov

    )Singlet superconductor junctions ()Triplet superconductor junctions [PRB 70, 012507 (2004), PRB71 024506(2005) PRB 72,R140503 (2005), PRL 96 (2006) ] [PRB 69 144519 (2004), PRL 90 167003(2003)] #12;Tunneling

  6. Complementary junction heterostructure field-effect transistor

    DOE Patents [OSTI]

    Baca, Albert G. (Albuquerque, NM); Drummond, Timothy J. (Albuquerque, NM); Robertson, Perry J. (Albuquerque, NM); Zipperian, Thomas E. (Albuquerque, NM)

    1995-01-01T23:59:59.000Z

    A complimentary pair of compound semiconductor junction heterostructure field-effect transistors and a method for their manufacture are disclosed. The p-channel junction heterostructure field-effect transistor uses a strained layer to split the degeneracy of the valence band for a greatly improved hole mobility and speed. The n-channel device is formed by a compatible process after removing the strained layer. In this manner, both types of transistors may be independently optimized. Ion implantation is used to form the transistor active and isolation regions for both types of complimentary devices. The invention has uses for the development of low power, high-speed digital integrated circuits.

  7. Axion physics in a Josephson junction environment

    E-Print Network [OSTI]

    Christian Beck

    2011-11-23T23:59:59.000Z

    We show that recent experiments based on Josephson junctions, SQUIDS, and coupled Josephson qubits have a cosmological interpretation in terms of axionic dark matter physics, in the sense that they allow for analogue simulation of early-universe axion physics. We propose new experimental setups in which SQUID-like axionic interactions in a resonant Josephson junction environment can be tested, similar in nature to recent experiments that test for quantum entanglement of two coupled Josephson qubits. We point out that the parameter values relevant for early-universe axion cosmology are accessible with present day's achievements in nanotechnology.

  8. Complementary junction heterostructure field-effect transistor

    DOE Patents [OSTI]

    Baca, A.G.; Drummond, T.J.; Robertson, P.J.; Zipperian, T.E.

    1995-12-26T23:59:59.000Z

    A complimentary pair of compound semiconductor junction heterostructure field-effect transistors and a method for their manufacture are disclosed. The p-channel junction heterostructure field-effect transistor uses a strained layer to split the degeneracy of the valence band for a greatly improved hole mobility and speed. The n-channel device is formed by a compatible process after removing the strained layer. In this manner, both types of transistors may be independently optimized. Ion implantation is used to form the transistor active and isolation regions for both types of complimentary devices. The invention has uses for the development of low power, high-speed digital integrated circuits. 10 figs.

  9. Dynamic simulations of arrays of Josephson junctions

    SciTech Connect (OSTI)

    Eikmans, H.; van Himbergen, J.E. (Institute for Theoretical Physics, University of Utrecht, P.O. Box 80.006, 3508 TA Utrecht, The Netherlands (NL))

    1990-05-01T23:59:59.000Z

    First we introduce a very efficient algorithm for dynamic simulations of a wide class of arrays of Josephson junctions with realistic boundaries. With this algorithm one can also represent current-biased arrays with periodic boundaries. Next we present results of extensive simulations of ladder arrays. We evaluate the resistance as a function of magnetic field and find striking differences between different geometries.

  10. Gallium nitride junction field-effect transistor

    DOE Patents [OSTI]

    Zolper, John C. (Albuquerque, NM); Shul, Randy J. (Albuquerque, NM)

    1999-01-01T23:59:59.000Z

    An all-ion implanted gallium-nitride (GaN) junction field-effect transistor (JFET) and method of making the same. Also disclosed are various ion implants, both n- and p-type, together with or without phosphorous co-implantation, in selected III-V semiconductor materials.

  11. Axion mass estimates from resonant Josephson junctions

    E-Print Network [OSTI]

    Christian Beck

    2014-06-10T23:59:59.000Z

    Recently it has been proposed that dark matter axions from the galactic halo can produce a small Shapiro step-like signal in Josephson junctions whose Josephson frequency resonates with the axion mass [C. Beck, PRL 111, 231801 (2013)]. Here we show that the axion field equations in a voltage-driven Josephson junction environment allow for a nontrivial solution where the axion-induced electric current manifests itself as an oscillating supercurrent. The linear change of phase associated with this nontrivial solution implies the formal existence of a large magnetic field in a tiny surface area of the weak link region of the junction which makes incoming axions decay into microwave photons. We derive a condition for the design of Josephson junction experiments so that they can act as optimum axion detectors. Four independent recent experiments are discussed in this context. The observed Shapiro step anomalies of all four experiments consistently point towards an axion mass of $(110 \\pm 2)\\mu $eV. This mass value is compatible with the recent BICEP2 results and implies that Peccei-Quinn symmetry breaking was taking place after inflation.

  12. Gallium nitride junction field-effect transistor

    DOE Patents [OSTI]

    Zolper, J.C.; Shul, R.J.

    1999-02-02T23:59:59.000Z

    An ion implanted gallium-nitride (GaN) junction field-effect transistor (JFET) and method of making the same are disclosed. Also disclosed are various ion implants, both n- and p-type, together with or without phosphorus co-implantation, in selected III-V semiconductor materials. 19 figs.

  13. Vegetative covers: Special study. [Final report

    SciTech Connect (OSTI)

    Not Available

    1988-11-01T23:59:59.000Z

    This report describes the findings of a special study on the use of vegetative covers to stabilize tailings piles for the Uranium Mill Tailings Remedial Action (UMTRA) Project. The principal rationale for using plants would be to establish a dynamic system for controlling water balance. Specifically, vegetation would be used to intercept and transpire precipitation to the atmosphere, rather than allowing water to drain into the tailings and mobilize contaminants. This would facilitate compliance with groundwater standards proposed for the UMTRA Project by the Environmental Protection Agency. The goals of the study were to (1) evaluate the feasibility of using vegetative covers on UMTRA Project piles, (2) define the advantages and disadvantages of vegetative covers, and (3) develop general guidelines for their use when such use seems reasonable. The principal method for the study was to analyze and apply to the UMTRA Project the results of research programs on vegetative covers at other US Department of Energy (DOE) waste management facilities. The study also relied upon observations made of existing stabilized piles at UMTRA Project sites (Shiprock, New Mexico; Burrell, Pennsylvania; and Clive, Utah) where natural vegetation is growing on the rock-covered surfaces. Water balance and erosion models were also used to quantify the long-term performance of vegetative covers planned for the topslopes of stabilized piles at Grand Junction and Durango, Colorado, two UMTRA Project sites where the decision was made during the course of this special study to use vegetative covers. Elements in the design and construction of the vegetative covers at these two sites are discussed in the report, with explanations of the differing features that reflect differing environmental conditions.

  14. alto rio grande: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    16 17 18 19 20 21 22 23 24 25 Next Page Last Page Topic Index 1 MALE RIO GRANDE WILD TURKEY Environmental Sciences and Ecology Websites Summary: 217 MALE RIO GRANDE WILD TURKEY...

  15. Winning the Future: Grand Ronde Solar Projects Reduce Pollution...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Winning the Future: Grand Ronde Solar Projects Reduce Pollution, Cut Costs Winning the Future: Grand Ronde Solar Projects Reduce Pollution, Cut Costs October 20, 2014 - 5:00pm...

  16. Energy Secretary Steven Chu to Attend Grand Opening of Recovery...

    Office of Environmental Management (EM)

    to Attend Grand Opening of Recovery Act-Funded A123 Systems Battery Plant Energy Secretary Steven Chu to Attend Grand Opening of Recovery Act-Funded A123 Systems Battery Plant...

  17. Fabrication of magnetic tunnel junctions with epitaxial and textured ferromagnetic layers

    DOE Patents [OSTI]

    Chang, Y. Austin (Middleton, WI); Yang, Jianhua Joshua (Madison, WI)

    2008-11-11T23:59:59.000Z

    This invention relates to magnetic tunnel junctions and methods for making the magnetic tunnel junctions. The magnetic tunnel junctions include a tunnel barrier oxide layer sandwiched between two ferromagnetic layers both of which are epitaxial or textured with respect to the underlying substrate upon which the magnetic tunnel junctions are grown. The magnetic tunnel junctions provide improved magnetic properties, sharper interfaces and few defects.

  18. Single P-N junction tandem photovoltaic device

    DOE Patents [OSTI]

    Walukiewicz, Wladyslaw (Kensington, CA); Ager, III, Joel W. (Berkeley, CA); Yu, Kin Man (Lafayette, CA)

    2012-03-06T23:59:59.000Z

    A single P-N junction solar cell is provided having two depletion regions for charge separation while allowing the electrons and holes to recombine such that the voltages associated with both depletion regions of the solar cell will add together. The single p-n junction solar cell includes an alloy of either InGaN or InAlN formed on one side of the P-N junction with Si formed on the other side in order to produce characteristics of a two junction (2J) tandem solar cell through only a single P-N junction. A single P-N junction solar cell having tandem solar cell characteristics will achieve power conversion efficiencies exceeding 30%.

  19. Single P-N junction tandem photovoltaic device

    DOE Patents [OSTI]

    Walukiewicz, Wladyslaw (Kensington, CA); Ager, III, Joel W. (Berkeley, CA); Yu, Kin Man (Lafayette, CA)

    2011-10-18T23:59:59.000Z

    A single P-N junction solar cell is provided having two depletion regions for charge separation while allowing the electrons and holes to recombine such that the voltages associated with both depletion regions of the solar cell will add together. The single p-n junction solar cell includes an alloy of either InGaN or InAlN formed on one side of the P-N junction with Si formed on the other side in order to produce characteristics of a two junction (2J) tandem solar cell through only a single P-N junction. A single P-N junction solar cell having tandem solar cell characteristics will achieve power conversion efficiencies exceeding 30%.

  20. Investigation of the Wall Effect in the long Josephson junctions

    SciTech Connect (OSTI)

    Nevirkovets, I.P.; Rudenko, E.M. (Inst. of Metal Physics of the Ukrainian Academy of Science, Kiev 252142 (SU))

    1991-03-01T23:59:59.000Z

    This paper reports on the long Josephson junctions with edge current injection and shortened control line studied experimentally. It is found that the wall effect is connected with the blockade of vortices entry into the junction by control current, as well as with the existence of the energy barrier for the vortices at the boundary between a projection region and the remainder part of the junction. The significant enhancement of supercurrent due to the blockade was found.

  1. Raman Scattering at Plasmonic Junctions Shorted by Conductive...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    between line spectra and band spectra, can be assigned to shorting the junction plasmon through molecular conductive bridges. This is demonstrated through Raman trajectories...

  2. Quantum manipulation and simulation using Josephson junction arrays

    E-Print Network [OSTI]

    Xingxiang Zhou; Ari Mizel

    2006-05-01T23:59:59.000Z

    We discuss the prospect of using quantum properties of large scale Josephson junction arrays for quantum manipulation and simulation. We study the collective vibrational quantum modes of a Josephson junction array and show that they provide a natural and practical method for realizing a high quality cavity for superconducting qubit based QED. We further demonstrate that by using Josephson junction arrays we can simulate a family of problems concerning spinless electron-phonon and electron-electron interactions. These protocols require no or few controls over the Josephson junction array and are thus relatively easy to realize given currently available technology.

  3. Urban Water Conservation along the Rio Grande

    E-Print Network [OSTI]

    Silvey, Valeen; Kaiser, Ronald; Lesikar, Bruce; Runyan, Craig

    2004-01-01T23:59:59.000Z

    Urban Water Conservation along the Rio Grande THE TEXAS A&M UNIVERSITY SYSTEM NEW MEXICO STATE UNIVERSITY An Inventory of Water Conservation Programs TR 269 SP 201 Valeen Silvy, 1 Ronald Kaiser, 2 Bruce Lesikar 3 and Craig Runyan... water running into the streets from irrigation systems. Urban water conservation incorporates water- saving measures and incentives for the home, on the landscape and throughout the city water distribution system. It is easy to differentiate be...

  4. Phonon interference effects in molecular junctions

    SciTech Connect (OSTI)

    Markussen, Troels, E-mail: troels.markussen@gmail.com [Center for Atomic-scale Materials Design (CAMD), Department of Physics, Technical University of Denmark, DK-2800 Kgs. Lyngby (Denmark)] [Center for Atomic-scale Materials Design (CAMD), Department of Physics, Technical University of Denmark, DK-2800 Kgs. Lyngby (Denmark)

    2013-12-28T23:59:59.000Z

    We study coherent phonon transport through organic, ?-conjugated molecules. Using first principles calculations and Green's function methods, we find that the phonon transmission function in cross-conjugated molecules, like meta-connected benzene, exhibits destructive quantum interference features very analogous to those observed theoretically and experimentally for electron transport in similar molecules. The destructive interference features observed in four different cross-conjugated molecules significantly reduce the thermal conductance with respect to linear conjugated analogues. Such control of the thermal conductance by chemical modifications could be important for thermoelectric applications of molecular junctions.

  5. Junction Hilltop Wind | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to: navigation, searchOf Kilauea Volcano, Hawaii | WindInformationJosephine,Junction Hilltop

  6. Economic impact study of the Uranium Mill Tailings Remedial Action Project in Colorado: Colorado State fiscal year 1994. Revision 1

    SciTech Connect (OSTI)

    Not Available

    1994-12-01T23:59:59.000Z

    The Colorado economic impact study summarizes employment and economic benefits to the state from activities associated with the Uranium Mill Tailings Remedial Action (UMTRA) Project during Colorado state fiscal year 1994 (1 July 1993 through 30 June 1994). To capture employment information, a questionnaire was distributed to subcontractor employees at the active UMTRA Project sites of Grand Junction, Naturita, Gunnison, and Rifle, Colorado. Economic data were requested from each site prime subcontractor, as well as from the Remedial Action Contractor. Information on wages, taxes, and subcontract expenditures in combination with estimates and economic multipliers is used to estimate the dollar economic benefits to Colorado during the state fiscal year. Finally, the fiscal year 1994 estimates are compared to fiscal year 1993 employment and economic information.

  7. Limiting and realistic efficiencies of multi-junction solar Photonic Materials Group, FOM institute AMOLF, Amsterdam

    E-Print Network [OSTI]

    Polman, Albert

    analysis of the single junction c-Si cell and the 5-junction Ge-(c-Si)-CZTS-(a-SiC)-GaP cell is performed

  8. Grand Junction projects office mixed-waste treatment program, VAC*TRAX mobile treatment unit process hazards analysis

    SciTech Connect (OSTI)

    Bloom, R.R.

    1996-04-01T23:59:59.000Z

    The objective of this report is to demonstrate that a thorough assessment of the risks associated with the operation of the Rust Geotech patented VAC*TRAX mobile treatment unit (MTU) has been performed and documented. The MTU was developed to treat mixed wastes at the US Department of Energy (DOE) Albuquerque Operations Office sites. The MTU uses an indirectly heated, batch vacuum dryer to thermally desorb organic compounds from mixed wastes. This process hazards analysis evaluated 102 potential hazards. The three significant hazards identified involved the inclusion of oxygen in a process that also included an ignition source and fuel. Changes to the design of the MTU were made concurrent with the hazard identification and analysis; all hazards with initial risk rankings of 1 or 2 were reduced to acceptable risk rankings of 3 or 4. The overall risk to any population group from operation of the MTU was determined to be very low; the MTU is classified as a Radiological Facility with low hazards.

  9. Nonvolatile memory disturbs due to gate and junction leakage currents

    E-Print Network [OSTI]

    Schroder, Dieter K.

    ) from traps within the gate oxides. Such low gate leakage currents can lead to sufficient charge; accepted 10 September 2002 Abstract We address disturbs due to gate oxide and junction leakage currents in floating gate nonvolatile memories (NVM). The junction leakage is important, because the gate oxide current

  10. Profiling the Thermoelectric Power of Semiconductor Junctions with

    E-Print Network [OSTI]

    Profiling the Thermoelectric Power of Semiconductor Junctions with Nanometer Resolution Ho-Ki Lyeo,3 * We have probed the local thermoelectric power of semiconductor nanostruc- tures with the use of ultrahigh-vacuum scanning thermoelectric microscopy. When applied to a p-n junction, this method reveals

  11. Grand Unification and Enhanced Quantum Gravitational Effects

    SciTech Connect (OSTI)

    Calmet, Xavier [Catholic University of Louvain, Center for Particle Physics and Phenomenology, 2, Chemin du Cyclotron, B-1348 Louvain-la-Neuve (Belgium); Hsu, Stephen D. H.; Reeb, David [Institute of Theoretical Science, University of Oregon, Eugene, Oregon 97403 (United States)

    2008-10-24T23:59:59.000Z

    In grand unified theories with large numbers of fields, renormalization effects significantly modify the scale at which quantum gravity becomes strong. This in turn can modify the boundary conditions for coupling constant unification, if higher dimensional operators induced by gravity are taken into consideration. We show that the generic size of, and the uncertainty in, these effects from gravity can be larger than the two-loop corrections typically considered in renormalization group analyses of unification. In some cases, gravitational effects of modest size can render unification impossible.

  12. Grand Meadow Wind Farm | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to: navigation, search OpenEI ReferenceJump to: navigation, searchGoodyear,GouldDakotaCouleeGrand

  13. Grand Electric Coop, Inc | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are8COaBulkTransmissionSitingProcess.pdfGetec AG Contracting JumpGove County, Kansas:GrahamBlanc,Grand Electric Coop,

  14. CMI Grand Challenge Problems | Critical Materials Institute

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOnItem NotEnergy,ARMForms About Batteries BatteriesCAES Home HomeDevelopsEducation andGrand

  15. A Grand Challenge for Planetary Nebulae

    E-Print Network [OSTI]

    Adam Frank; Orsola De Marco; Eric Blackman; Bruce Balick

    2007-12-12T23:59:59.000Z

    The study of PN has been confronting a growing list of dilemmas which have yet to find coherent resolution. These issues are both observational and theoretical and can be stated as a series of "facts" which can not, as of yet, be accounted for via a single framework. We review these facts and propose a skeleton framework for developing a new understanding post-AGB stars, PPN and PN. Our framework represents an attempt to articulate a a global perspective on the late stages of stellar evolution that can embrace both the nature of the central engine and the outflows they produce. Our framework focuses on interacting binary central stars which drive collimated outflows through MHD processes. We propose that the field of AGB/PN studies now faces a "Grand Challenge" in articulating the observational systematics of these objects in a way that can address issues related to binarity and magnetic shaping. A theoretical Grand Challenge is also faced in the form of integrated studies which can explicate the highly non-linear processes associated with MHD outflows driven by interacting binaries. These issues include the generation of magnetic fields via dynamo processes, the creation of accretion disks, the dynamics of Common Envelope ejection and the creation of magnetized jets.

  16. Citrus Production in the Lower Rio Grande Valley of Texas.

    E-Print Network [OSTI]

    Traub, Hamilton Paul; Friend, W. H. (William Heartsill)

    1930-01-01T23:59:59.000Z

    LIE?ARY, A t r: COLLEGE, CAvrus. TEXAS AGRICULTURAL EXPERIMENT STATION A. B. CONNER, DIRECTOR COLLEGE STATION, BRAZOS COUNTY, TEXAS - BULLETIN NO. 419 DIVISION OF HORTICULTURE Citrus Production in the Lower Rio Grande Valley of Texas... of Agriculture. . Citrus fruit production in the Lower Rio Grande Valley, especially grapefruit, has increased at a rather rapid rate dur- ing the past few years. More than 5,000,000 citrus trees were set in orchard form in the Lower Rio Grande Valley up...

  17. SunShot Grand Challenge Summit Breakout Sessions Announced |...

    Broader source: Energy.gov (indexed) [DOE]

    leaders and subject matter experts across 17 breakout sessions will provide insights and perspectives on the "grand challenges" to meeting the SunShot 2020 affordability goal in...

  18. Grand Challenge for Basic and Applied Research in Hydrogen Storage...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Storage Grand Challenge for Basic and Applied Research in Hydrogen Storage Presentation from the Hydrogen Storage Pre-Solicitation Meeting held June 19, 2003 in Washington, DC....

  19. City of Grand Rapids- Green Building Requirements for Municipal Buildings

    Broader source: Energy.gov [DOE]

    In January 2006, the City of Grand Rapids approved a resolution detailing the city's sustainability policy for public buildings. The resolution directed city personnel to implement the principles...

  20. ,"Grand Island, NY Natural Gas Pipeline Imports From Canada ...

    U.S. Energy Information Administration (EIA) Indexed Site

    Imports From Canada (MMcf)" ,"Click worksheet name or tab at bottom for data" ,"Worksheet Name","Description"," Of Series","Frequency","Latest Data for" ,"Data 1","Grand Island,...

  1. Dermatology Grand Rounds "AJCC Melanoma Staging Update: Impact on Diagnostic

    E-Print Network [OSTI]

    Bar, Moshe

    Dermatology Grand Rounds "AJCC Melanoma Staging Update: Impact on Diagnostic Reporting in primary melanoma Explain the decision making process in offering sentinel lymph node mapping Date

  2. Petrogenesis of Valle Grande Member Rhyolites, Valles Caldera...

    Open Energy Info (EERE)

    of Valle Grande Member Rhyolites, Valles Caldera, New Mexico- Implications for Evolution of the Jemez Mountains Magmatic System Jump to: navigation, search OpenEI Reference...

  3. Sandia National Laboratories: Grand Challenge Laboratory-Directed...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Grand Challenge Laboratory-Directed Research and Development project Recent Sandia Secure, Scalable Microgrid Advanced Controls Research Accomplishments On March 3, 2015, in...

  4. EV Everywhere Grand Challenge - Battery Status and Cost Reduction...

    Energy Savers [EERE]

    Status and Cost Reduction Prospects EV Everywhere Grand Challenge - Battery Status and Cost Reduction Prospects Presentation given by technology manager David Howell at the EV...

  5. EV Everywhere Grand Challenge Introduction for Electric Drive...

    Energy Savers [EERE]

    David Danielson at the EV Everywhere Grand Challenge - Electric Drive (Power Electronics and Electric Machines) Workshop on July 24, 2012 held at the Doubletree O'Hare,...

  6. Statement by Energy Secretary Steven Chu on Today's Grand Opening...

    Office of Environmental Management (EM)

    Steven Chu issued the following statement on today's grand opening of the Nordex wind turbine manufacturing facility in Jonesboro. The facility was supported with funding from the...

  7. Mechanical deformations of boron nitride nanotubes in crossed junctions

    SciTech Connect (OSTI)

    Zhao, Yadong; Chen, Xiaoming; Ke, Changhong, E-mail: cke@binghamton.edu [Department of Mechanical Engineering, State University of New York at Binghamton, Binghamton, New York 13902 (United States); Park, Cheol [NASA Langley Research Center, Hampton, Virginia 23681 (United States); Department of Mechanical and Aerospace Engineering, University of Virginia, Charlottesville, Virginia 22904 (United States); Fay, Catharine C. [NASA Langley Research Center, Hampton, Virginia 23681 (United States); Stupkiewicz, Stanislaw [Institute of Fundamental Technological Research, Warsaw (Poland)

    2014-04-28T23:59:59.000Z

    We present a study of the mechanical deformations of boron nitride nanotubes (BNNTs) in crossed junctions. The structure and deformation of the crossed tubes in the junction are characterized by using atomic force microscopy. Our results show that the total tube heights are reduced by 20%33% at the crossed junctions formed by double-walled BNNTs with outer diameters in the range of 2.214.67?nm. The measured tube height reduction is found to be in a nearly linear relationship with the summation of the outer diameters of the two tubes forming the junction. The contact force between the two tubes in the junction is estimated based on contact mechanics theories and found to be within the range of 4.27.6 nN. The Young's modulus of BNNTs and their binding strengths with the substrate are quantified, based on the deformation profile of the upper tube in the junction, and are found to be 1.07??0.11 TPa and 0.180.29 nJ/m, respectively. Finally, we perform finite element simulations on the mechanical deformations of the crossed BNNT junctions. The numerical simulation results are consistent with both the experimental measurements and the analytical analysis. The results reported in this paper contribute to a better understanding of the structural and mechanical properties of BNNTs and to the pursuit of their applications.

  8. Recent Results from Kascade-Grande

    E-Print Network [OSTI]

    Kampert, K H; Ainsley, C; kesson, P F; Alexander, G; Anagnostou, G; Anderson, K J; Asai, S; Axen, D; Bailey, I; Barberio, E; Barillari, T; Barlow, R J; Batley, J Richard; Bechtle, P; Behnke, T; Bell, K W; Bell, P J; Bella, G; Bellerive, A; Benelli, G; Bethke, Siegfried; Biebel, O; Boeriu, O; Bock, P; Boutemeur, M; Braibant, S; Brown, R M; Burckhart, H J; Campana, S; Capiluppi, P; Carnegie, R K; Carter, A A; Carter, J R; Chang, C Y; Charlton, D G; Ciocca, C; Csilling, A; Cuani, M; Dado, S; de Roeck, A; De Wolf, E A; Desch, K; Dienes, B; Dubbert, J; Duchovni, E; Duckeck, G; Duerdoth, I P; Etzion, E; Fabbri, F; Ferrari, P; Fiedler, F; Fleck, I; Ford, M; Frey, A; Gagnon, P; Gary, J W; Geich-Gimbel, C; Giacomelli, G; Giacomelli, P; Giunta, M; Goldberg, J; Gross, E; Grunhaus, J; Gruw, M; Sen-Gupta, A; Hajdu, C; Hamann, M; Hanson, G G; Harel, A; Hauschild, M; Hawkes, C M; Hawkings, R; Herten, G; Heuer, R D; Hill, J C; Horvth, D; Igo-Kemenes, P; Ishii, K; Jeremie, H; Jovanovic, P; Junk, T R; Kanzaki, J; Karlen, D; Kawagoe, K; Kawamoto, T; Keeler, R K; Kellogg, R G; Kennedy, B W; Kluth, S; Kobayashi, T; Kobel, M; Komamiya, S; Kramer, T; Krasznahorkay, A; Krieger, P; Von Krogh, J; Khl, T; Kupper, M; Laerty, G D; Landsman, H; Lanske, D; Lellouch, D; Letts, J; Levinson, L; Lillich, J; Lloyd, S L; Loebinger, F K; L, J; Ludwig, A; Ludwig, J; Mader, W; Marcellini, S; Martin, A J; Mashimo, T; Mttig, P; McKenna, J; McPherson, R A; Meijers, F; Menges, W; Merritt, F S; Mes, H; Meyer, N; Michelini, A; Mihara, S; Mikenberg, G; Miller, D J; Mohr, W; Mori, T; Mutter, A; Nagai, K; Nakamura, I; Nanjo, H; Neal, H A; Nisius, R; O'Neale, S W; Oh, A; Oreglia, M J; Orito, S; Pahl, C; Psztor, G; Pater, J R; Pilcher, J E; Pinfold, J L; Plane, D E; Pooth, O; Przybycien, M B; Quadt, A; Rabbertz, K; Rembser, C; Renkel, P; Roney, J M; Rossi, A M; Rozen, Y; Runge, K; Sachs, K; Saeki, T; Sarkisyan-Grinbaum, E; Schaile, A D; Schaile, O; Schar-Hansen, P; Schieck, J; Schrner-Sadenius, T; Schrder, M; Schumacher, M; Seuster, R; Shears, T G; Shen, B C; Sherwood, P; Skuja, A; Smith, A M; Sobie, R J; Sldner-Rembold, S; Span, F; Stahl, A; Strom, D; Strhmer, R; Tarem, S; Tasevsky, M; Teuscher, R; Thomson, M A; Torrence, E; Toya, D; Tran, P; Trigger, I; Trcsnyi, Z L; Tsur, E; Turner-Watson, M F; Ueda, I; Ujvri, B; Vollmer, C F; Vannerem, P; Vertesi, R; Verzocchi, M; Voss, H; Vossebeld, Joost Herman; Ward, C P; Ward, D R; Watkins, P M; Watson, A T; Watson, N K; Wells, P S; Wengler, T; Wermes, N; Wilson, G W; Wilson, J A; Wolf, G; Wyatt, T R; Yamashita, S; Zer-Zion, D; Zivkovic, L; Kampert, Karl-Heinz

    2006-01-01T23:59:59.000Z

    KASCADE-Grande is a new extensive air shower experiment co-located to the KASCADE site at Forschungszentrum Karlsruhe. The multi-detector system allows to investigate the energy spectrum, composition, and anisotropies of cosmic rays with unprecedented prevision in the energy range from 10^{14}-10^{18} eV. The primary goals besides investigating the origin of the knee at E ~ 3 * 10^{15} eV, are to verify the existence of the second knee at E ~ 10^{17} eV and to measure the composition in the expected transition region of galactic to extragalactic cosmic rays. The performance of the apparatus and shower reconstruction methods will be discussed on the basis of detailed Monte Carlo simulations and first data. First results based on slightly more than a year of data taking are presented.

  9. New Applications of the Image Grand Tour Jrgen Symanzik

    E-Print Network [OSTI]

    Symanzik, Jrgen

    . Wegman George Mason University, Center for Computational Statistics Fairfax, VA 22030-4444 e data analysts find very helpful. Wegman (1992) discussed a form of the grand tour for general k-dimensional space, k d. The algorithms for computing a grand tour are relatively computationally intensive. Wegman

  10. 39 Geographic Information Science: The Grand Challenges MICHAEL F. GOODCHILD

    E-Print Network [OSTI]

    Wright, Dawn Jeannine

    39 Geographic Information Science: The Grand Challenges MICHAEL F. GOODCHILD Many chapters; and the lack of awareness of such issues as #12;3 Geographic Information Science: The Grand Challenges scale technology; in essence the science behind the systems. Over the past twelve years there have been various

  11. DAPRPA Grand Challenge, Unfinished Business, November 1, 2005 Back & Forth

    E-Print Network [OSTI]

    Singh, Jaswinder Pal

    DAPRPA Grand Challenge, Unfinished Business, November 1, 2005 Back & Forth Return to Beer Bottle Pass Route to/from Beer Bottle Pass from Start of 2005 GC Course #12;DAPRPA Grand Challenge, Unfinished Business, November 1, 2005 Return to Beer Bottle Pass GPS tracks of route to/from Beer Bottle Pass #12

  12. Integrated Water Management for Environmental Flows in the Rio Grande

    E-Print Network [OSTI]

    Pasternack, Gregory B.

    flows; Reservoir reoperation; Integrated water management; Adaptive management; Rio Grande. IntroductionIntegrated Water Management for Environmental Flows in the Rio Grande S. Sandoval-Solis, A.M.ASCE1 the environment. This paper presents an integrated water management approach to meet current and future water

  13. Power dissipation in a single molecule junction: Tracking energy levels

    E-Print Network [OSTI]

    Yaghoob Naimi; Javad Vahedi

    2014-12-05T23:59:59.000Z

    Motivated by recent work [Lee et al. Nature {\\bf 489}, 209 (2013)], on asymmetry features of heat dissipation in the electrodes of molecular junctions, we put forward an idea as a result of heat dissipation in the electrodes. Based on tight-binding model and a generalized Green's function formalism, we describe the conditions under which heat dissipation shows symmetry characteristic and does not depend on the bias polarity. We also show the power dissipated in the junction can be used to detect which energy levels of molecule junction play more or less role in the transmission process. We present this idea by studying a simple toy model and Au-$C_{60}$-Au junction.

  14. apical cell junctions: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Viciana; Dora E. Vega-salas; Hans-peter Hauri; M. Brignoni 1997-01-01 3 Quantum Junction Solar Cells Jiang Tang,, Engineering Websites Summary: tuned primarily via control over...

  15. adhering junctions connecting: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    of such experiments the number of magnetic flux quanta spontaneously trapped in a superconducting loop was measured by means of a long Josephson tunnel junction built on top of...

  16. adherens junctions connect: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    of such experiments the number of magnetic flux quanta spontaneously trapped in a superconducting loop was measured by means of a long Josephson tunnel junction built on top of...

  17. Josephson Junctions and Devices fabricated by Focused Electron Beam Irradiation

    E-Print Network [OSTI]

    Booij, Wilfred Edwin

    Josephson Junctions and Devices fabricated by Focused Electron Beam Irradiation Wilfred Edwin Booij Gonville and Caius College Cambridge A dissertation submitted for the degree of Doctor of Philosophy at the University of Cambridge December 1997... Summary Josephson Junctions and Devices fabricated by Focused Electron Beam Irradiation The irradiation of high Tc superconducting thin films with a focused electron beam, such as that obtained in a scanning transmission electron microscope (STEM), can...

  18. A Three-Isocenter Jagged-Junction IMRT Approach for Craniospinal Irradiation Without Beam Edge Matching for Field Junctions

    SciTech Connect (OSTI)

    Cao, Fred, E-mail: fcao@bccancer.bc.ca [Department of Medical Physics, Fraser Valley Centre, BC Cancer Agency, Surrey, British Columbia (Canada)] [Department of Medical Physics, Fraser Valley Centre, BC Cancer Agency, Surrey, British Columbia (Canada); Ramaseshan, Ramani; Corns, Robert; Harrop, Sheryl [Department of Medical Physics, Fraser Valley Centre, BC Cancer Agency, Surrey, British Columbia (Canada)] [Department of Medical Physics, Fraser Valley Centre, BC Cancer Agency, Surrey, British Columbia (Canada); Nuraney, Nimet; Steiner, Peter; Aldridge, Stephanie [Department of Radiation Oncology, Fraser Valley Centre, BC Cancer Agency, Surrey, British Columbia (Canada)] [Department of Radiation Oncology, Fraser Valley Centre, BC Cancer Agency, Surrey, British Columbia (Canada); Liu, Mitchell; Carolan, Hannah [Department of Radiation Oncology, Vancouver Centre, BC Cancer Agency, Vancouver, British Columbia (Canada)] [Department of Radiation Oncology, Vancouver Centre, BC Cancer Agency, Vancouver, British Columbia (Canada); Agranovich, Alex; Karvat, Anand [Department of Radiation Oncology, Fraser Valley Centre, BC Cancer Agency, Surrey, British Columbia (Canada)] [Department of Radiation Oncology, Fraser Valley Centre, BC Cancer Agency, Surrey, British Columbia (Canada)

    2012-11-01T23:59:59.000Z

    Purpose: Traditionally craniospinal irradiation treats the central nervous system using two or three adjacent field sets. We propose a technique using a three-isocenter intensity-modulated radiotherapy (IMRT) plan (jagged-junction IMRT) which overcomes problems associated with field junctions and beam edge matching and improves planning and treatment setup efficiencies with homogenous target dose distribution. Methods and Materials: Treatments for 3 patients with a prescription of 36 Gy in 20 fractions were retrospectively planned with jagged-junction IMRT and compared to conventional treatment plans. Planning target volume (PTV) included the whole brain and spinal canal to the S3 vertebral level. The plan used three field sets, each with a unique isocenter. One field set with seven fields treated the cranium. Two field sets treated the spine, each set using three fields. Fields from adjacent sets were overlapped, and the optimization process smoothly integrated the dose inside the overlapped junction. Results: For jagged-junction IMRT plans vs. conventional technique, the average homogeneity index equaled 0.08 {+-} 0.01 vs. 0.12 {+-} 0.02, respectively, and conformity number equaled 0.79 {+-} 0.01 vs. 0.47 {+-} 0.12, respectively. The 95% isodose surface covered (99.5 {+-} 0.3)% of the PTV vs. (98.1 {+-} 2.0)%, respectively. Both jagged-junction IMRT plans and the conventional plans had good sparing of organs at risk. Conclusions: Jagged-junction IMRT planning provided good dose homogeneity and conformity to the target while maintaining a low dose to organs at risk. Results from jagged-junction IMRT plans were better than or equivalent to those from the conventional technique. Jagged-junction IMRT optimization smoothly distributed dose in the junction between field sets. Because there was no beam matching, this treatment technique is less likely to produce hot or cold spots at the junction, in contrast to conventional techniques. The planning process is also simplified as only one IMRT plan is required for the entire target volume.

  19. Environmental analysis and data report prepared for the environmental assessment of remedial action at the Lowman uranium mill tailings site near Lowman, Idaho. [Urnanium Mill Tailings Remedial Action (UMTRA) Project

    SciTech Connect (OSTI)

    Not Available

    1991-01-01T23:59:59.000Z

    This document contains information and data gathered in support of the preparation of the environmental assessment (EA) of the proposed remedial action at the Uranium Mill Tailings Remedial Action (UMTRA) Project site near Lowman, Idaho. The Lowman EA was prepared pursuant to the National Environmental Policy Act (NEPA), which requires Federal agencies to assess the effects of their actions on the environment. It examines the short-term and the long-term effects of the US Department of Energy's (DOE) proposed remedial action for the Lowman site as well as the no action alternative. The DOE will use the information and analyses presented in the EA to determine whether the proposed action would have a significant impact on the environment. If the impacts are determined to be significant, an environmental impact statement will be prepared. If the impacts are not judged to be significant, the DOE may issue a Finding of No Significant Impact and implement the proposed action. The information and data presented in this environmental analyses and data report are for background purposes only and are not required as part of the NEPA decision-making process.

  20. Measure Guideline: Optimizing the Configuration of Flexible Duct Junction Boxes

    SciTech Connect (OSTI)

    Beach, R.; Burdick, A.

    2014-03-01T23:59:59.000Z

    This measure guideline offers additional recommendations to heating, ventilation, and air conditioning (HVAC) system designers for optimizing flexible duct, constant-volume HVAC systems using junction boxes within Air Conditioning Contractors of America (ACCA) Manual D guidance (Rutkowski, H. Manual D -- Residential Duct Systems, 3rd edition, Version 1.00. Arlington, VA: Air Conditioning Contractors of America, 2009.). IBACOS used computational fluid dynamics software to explore and develop guidance to better control the airflow effects of factors that may impact pressure losses within junction boxes among various design configurations (Beach, R., Prahl, D., and Lange, R. CFD Analysis of Flexible Duct Junction Box Design. Golden, CO: National Renewable Energy Laboratory, submitted for publication 2013). These recommendations can help to ensure that a system aligns more closely with the design and the occupants' comfort expectations. Specifically, the recommendations described herein show how to configure a rectangular box with four outlets, a triangular box with three outlets, metal wyes with two outlets, and multiple configurations for more than four outlets. Designers of HVAC systems, contractors who are fabricating junction boxes on site, and anyone using the ACCA Manual D process for sizing duct runs will find this measure guideline invaluable for more accurately minimizing pressure losses when using junction boxes with flexible ducts.

  1. Integrated Reservoir Characterization: Offshore Louisiana, Grand Isle Blocks 32 & 33

    E-Print Network [OSTI]

    Casey, Michael Chase

    2011-08-08T23:59:59.000Z

    several areas that are shaled-out effectively creating a flow barrier within reservoir compartments. Due to the barrier in the PM-1 reservoir compartment, an area of potentially recoverable hydrocarbons remains. In Grand Isle 33, the middle QH sand...

  2. Geothermal Resources of Rifts- a Comparison of the Rio Grande...

    Open Energy Info (EERE)

    navigation, search OpenEI Reference LibraryAdd to library Journal Article: Geothermal Resources of Rifts- a Comparison of the Rio Grande Rift and the Salton Trough Abstract The Rio...

  3. Grand Opening of Abengoa's Biorefinery: Nation's Third Commercial...

    Office of Environmental Management (EM)

    its grand opening on October 17, 2014, in Hugoton, Kansas. The Abengoa Bioenergy Biomass of Kansas (ABBK) facility is the first of its kind to use a proprietary enzymatic...

  4. Integrated Reservoir Characterization: Offshore Louisiana, Grand Isle Blocks 32 & 33

    E-Print Network [OSTI]

    Casey, Michael Chase

    2011-08-08T23:59:59.000Z

    several areas that are shaled-out effectively creating a flow barrier within reservoir compartments. Due to the barrier in the PM-1 reservoir compartment, an area of potentially recoverable hydrocarbons remains. In Grand Isle 33, the middle QH sand...

  5. Evaluation of Geothermal Potential of Rio Grande Rift and Basin...

    Open Energy Info (EERE)

    and Range Province, New Mexico Jump to: navigation, search OpenEI Reference LibraryAdd to library Report: Evaluation of Geothermal Potential of Rio Grande Rift and Basin and Range...

  6. City of Grand Rapids- Green Power Purchasing Policy

    Broader source: Energy.gov [DOE]

    In 2005, the City of Grand Rapids established a goal of purchasing 20% of its municipal power demand from renewable energy by 2008. In November 2007, the city signed a three-year agreement with a...

  7. agudos grandes granite: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    for the Rio GrandeBasin, one of the most productive agriculturalareas in the United States. Irrigated agricul- ture claims 85 percent of its water, and urban water use is...

  8. Junction-based field emission structure for field emission display

    DOE Patents [OSTI]

    Dinh, Long N. (Concord, CA); Balooch, Mehdi (Berkeley, CA); McLean, II, William (Oakland, CA); Schildbach, Marcus A. (Livermore, CA)

    2002-01-01T23:59:59.000Z

    A junction-based field emission display, wherein the junctions are formed by depositing a semiconducting or dielectric, low work function, negative electron affinity (NEA) silicon-based compound film (SBCF) onto a metal or n-type semiconductor substrate. The SBCF can be doped to become a p-type semiconductor. A small forward bias voltage is applied across the junction so that electron transport is from the substrate into the SBCF region. Upon entering into this NEA region, many electrons are released into the vacuum level above the SBCF surface and accelerated toward a positively biased phosphor screen anode, hence lighting up the phosphor screen for display. To turn off, simply switch off the applied potential across the SBCF/substrate. May be used for field emission flat panel displays.

  9. Annexin A2 is Required for Endothelial Cell Junctional Response to S1P

    E-Print Network [OSTI]

    Smith, Rebecca

    2014-01-14T23:59:59.000Z

    Endothelial cell (EC) junctions are critical for angiogenesis, the sprouting and growth of new blood vessels from existing vessels. Sphingosine 1-phosphate (S1P) is a proangiogenic factor that potently stimulates sprouting, fortifies EC junctions...

  10. Free electron gas primary thermometer: The bipolar junction transistor

    SciTech Connect (OSTI)

    Mimila-Arroyo, J., E-mail: jmimila@cinvestav.mx [Centro de Investigacin y de Estudios Avanzados del Instituto Politcnico Nacional, Dpto. de Ing. Elctrica-SEES, Av. Instituto Politcnico Nacional No 2508, Mxico D.F. CP 07360 (Mexico)

    2013-11-04T23:59:59.000Z

    The temperature of a bipolar transistor is extracted probing its carrier energy distribution through its collector current, obtained under appropriate polarization conditions, following a rigorous mathematical method. The obtained temperature is independent of the transistor physical properties as current gain, structure (Homo-junction or hetero-junction), and geometrical parameters, resulting to be a primary thermometer. This proposition has been tested using off the shelf silicon transistors at thermal equilibrium with water at its triple point, the transistor temperature values obtained involve an uncertainty of a few milli-Kelvin. This proposition has been successfully tested in the temperature range of 77450?K.

  11. Visible Y -junction diode laser with mixed coupling

    SciTech Connect (OSTI)

    van der Poel, C.J.; Opschoor, J.; Valster, A.; Drenten, R.R. (Philips Research Laboratories, P. O. Box 80 000, 5600 JA Eindhoven (The Netherlands)); Andre, J.P. (Laboratoires d'Electronique et de Physique Applique, 3 Avenue Descartes, 94450 Limeil-Brevannes (France))

    1990-07-15T23:59:59.000Z

    An experimental study and theoretical analysis of a phase-locked, visible, {lambda}=670 nm, 2-3 {ital Y}-junction semiconductor laser array are presented. In a ridgetype 2-3 {ital Y}-junction, AlInGaP/InGaP array, both in-phase and anti-phase array modes are observed to lase simultaneously. The experimental results are discussed in the framework of a model based on the beam propagation method. The influence of the presence of both interferometric and evanescent coupling on the array modes is analyzed.

  12. Optimized Triple-Junction Solar Cells Using Inverted Metamorphic Approach (Presentation)

    SciTech Connect (OSTI)

    Geisz, J. F.

    2008-11-01T23:59:59.000Z

    Record efficiencies with triple-junction inverted metamorphic designs, modeling useful to optimize, and consider operating conditions before choosing design.

  13. TM-mode coupling to a Josephson junction S. J. Lewandowski

    E-Print Network [OSTI]

    Boyer, Edmond

    of the junction electrodes. to the j unction was provided by two leads immersed in superconducting solder, which

  14. Nanowire-Based Molecular Monolayer Junctions: Synthesis, Assembly, and Electrical Characterization

    E-Print Network [OSTI]

    (phenylene vinylene) (OPV) were prepared by replicating the pores of sub-40 nm diameter polycarbonate track etched that the conductance of junctions formed with -conjugated oligomers are several orders of magnitude larger than the saturated alkanes, with the OPV junctions having the highest conductance. The molecular wire junction

  15. DESIGN APPROACHES AND MATERIALS PROCESSES FOR ULTRAHIGH EFFICIENCY LATTICE MISMATCHED MULTI-JUNCTION SOLAR CELLS

    E-Print Network [OSTI]

    Atwater, Harry

    -JUNCTION SOLAR CELLS Melissa J. Griggs 1 , Daniel C. Law 2 , Richard R. King 2 , Arthur C. Ackerman 3 , James M heterostructures grown in a multi-junction solar cell-like structure by MOCVD. Initial solar cell data are also of the minority carrier lifetime. INTRODUCTION High efficiency triple junction solar cells have recently been

  16. Novel InGaAsN pn Junction for High-Efficiency Multiple-Junction Solar Cells

    SciTech Connect (OSTI)

    Allerman, A.A.; Chang, P.C.; Gee, J.M.; Hammons, B.E.; Hou, H.Q.; Jones, E.D.; Kurtz, S.R.; Reinhardt, K.C.

    1999-03-26T23:59:59.000Z

    We report the application of a novel material, InGaAsN, with bandgap energy of 1.05 eV as a junction in an InGaP/GaAs/InGaAsN/Ge 4-junction design. Results of the growth and structural, optical, and electrical properties were demonstrated, showing the promising perspective of this material for ultra high efficiency solar cells. Photovoltaic properties of an as-grown pn diode structure and improvement through post growth annealing were also discussed.

  17. Photo-Thermoelectric Effect at a Graphene Interface Junction

    E-Print Network [OSTI]

    McEuen, Paul L.

    Photo-Thermoelectric Effect at a Graphene Interface Junction Xiaodong Xu, Nathaniel M. Gabor increase at the cryogenic temperature as compared to room temperature. Assuming the thermoelectric power predictions. KEYWORDS Graphene, photocurrent, photo-thermoelectric effect D evices that convert photons

  18. Modeling Social Network Relationships via t-Cherry Junction Trees

    E-Print Network [OSTI]

    Reisslein, Martin

    Modeling Social Network Relationships via t-Cherry Junction Trees Brian Proulx and Junshan Zhang Abstract--The massive scale of online social networks makes it very challenging to characterize intractable model for users' relationships in a social network. There are a number of advantages

  19. PARAMETRIC EXCITATION OF PLASMA OSCILLATIONS IN JOSEPHSON JUNCTIONS

    E-Print Network [OSTI]

    Boyer, Edmond

    b. ' FIG. 3. - (a) 03B1c tan oo vs. 2/Q at co = 2 cop. Straight line : theory. Circles : analog harmonic generation with big amplitude may be understood from a discussion of the stability properties frequency FIG. 1. - The junction model. For the analog R = 500 il, Io = 1 mA, C = 100 nF, and k = 2 e

  20. Mutual synchronization of two stacks of intrinsic Josephson junctions in cuprate superconductors

    SciTech Connect (OSTI)

    Lin, Shi-Zeng [Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)

    2014-05-07T23:59:59.000Z

    Certain high-T{sub c} cuprate superconductors, which naturally realize a stack of Josephson junctions, thus can be used to generate electromagnetic waves in the terahertz region. A plate-like single crystal with 10{sup 4} junctions without cavity resonance was proposed to achieve strong radiation. For this purpose, it is required to synchronize the Josephson plasma oscillation in all junctions. In this work, we propose to use two stacks of junctions shunted in parallel to achieve synchronization. The two stacks are mutually synchronized in the whole IV curve, and there is a phase shift between the plasma oscillation in the two stacks. The phase shift is nonzero when the number of junctions in different stacks is the same, while it can be arbitrary when the number of junctions is different. This phase shift can be tuned continuously by applying a magnetic field when all the junctions are connected by superconducting wires.

  1. City of Grand Marais, Minnesota (Utility Company) | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnual Siteof EnergyInnovationin Urban Transport |CityCity ofCity ofCityCity ofGrandCity of Grand

  2. Citrus Variety Trends in the Lower Rio Grande Valley.

    E-Print Network [OSTI]

    Alderman, D. C. (DeForest Charles)

    1951-01-01T23:59:59.000Z

    Citrus Variety Trends in the Lower Rio Grande Valley CONTENTS ......................................................................................................... Digest ...... 3... thousands of citrus trees and the growers were faced with a tremendous replanting program, which, in turn, had focused interest on varieties. Fruit production figures, yields per acre, and monetary returns per acre for five varieties of grapefruit...

  3. Data Mining: Data Analysis on a Grand Scale? Padhraic Smyth

    E-Print Network [OSTI]

    Smyth, Padhraic

    Data Mining: Data Analysis on a Grand Scale? Padhraic Smyth Information and Computer Science for Statistical Methods in Medical Research, September 2000 1 #12;Abstract Modern data mininghas evolvedlargelyas aresult ofe orts bycomputer scientists to address the needs of data owners" in extracting useful

  4. A Grand Challenge for Computing Research: a mathematical assistant

    E-Print Network [OSTI]

    Walsh, Toby

    A Grand Challenge for Computing Research: a mathematical assistant Toby Walsh 1 Cork Constraint Computation Centre, University College Cork, Ireland. tw@4c.ucc.ie The mathematical assistant Scientists to make excellent mathematical assistants. Indeed, in specialized domains, computers already are useful

  5. WATER COMMODIFICATION IN THE LOWER RIO GRANDE VALLEY, TEXAS

    E-Print Network [OSTI]

    Hernandez, Manuel

    2011-05-06T23:59:59.000Z

    The lower Rio Grande Valley of Texas is one of the poorest regions with the largest population lacking suitable water supply in the entire United States. The region is characterized by low-income, rural and peri-urban communities called ?colonias...

  6. WATER COMMODIFICATION IN THE LOWER RIO GRANDE VALLEY, TEXAS

    E-Print Network [OSTI]

    Garcia, Bianca 1989-

    2011-05-06T23:59:59.000Z

    The lower Rio Grande Valley of Texas is one of the poorest regions with the largest population lacking suitable water supply in the entire United States. The region is characterized by low-income, rural and peri-urban communities called colonias...

  7. EMPLOYMENT SUMMARY FOR 2011 GRADUATES Grand Forks, ND 58202

    E-Print Network [OSTI]

    Delene, David J.

    EMPLOYMENT SUMMARY FOR 2011 GRADUATES Grand Forks, ND 58202 Website : www.law.und.edu Phone : 701 Date Deferred 0 Total graduates 81 Unemployed - Not Seeking 0 Employment Status Unknown 2 Unemployed - Seeking 9 Employed - Undeterminable * 0 0 0 0 0 Employed - Bar Passage Required 40 0 1 0 41 Pursuing

  8. WATER COMMODIFICATION IN THE LOWER RIO GRANDE VALLEY, TEXAS

    E-Print Network [OSTI]

    Hernandez, Manuel

    2011-05-06T23:59:59.000Z

    The lower Rio Grande Valley of Texas is one of the poorest regions with the largest population lacking suitable water supply in the entire United States. The region is characterized by low-income, rural and peri-urban communities called ?colonias...

  9. WATER COMMODIFICATION IN THE LOWER RIO GRANDE VALLEY, TEXAS

    E-Print Network [OSTI]

    Garcia, Bianca 1989-

    2011-05-06T23:59:59.000Z

    The lower Rio Grande Valley of Texas is one of the poorest regions with the largest population lacking suitable water supply in the entire United States. The region is characterized by low-income, rural and peri-urban communities called colonias...

  10. Carbonaceous aerosol particles from common vegetation in the Grand Canyon

    SciTech Connect (OSTI)

    Hallock, K.A.; Mazurek, M.A. (Brookhaven National Lab., Upton, NY (United States)); Cass, G.R. (California Inst. of Tech., Pasadena, CA (United States). Dept. of Environmental Engineering Science)

    1992-05-01T23:59:59.000Z

    The problem of visibility reduction in the Grand Canyon due to fine organic aerosol particles in the atmosphere has become an area of increased environmental concern. Aerosol particles can be derived from many emission sources. In this report, we focus on identifying organic aerosols derived from common vegetation in the Grand Canyon. These aerosols are expected to be significant contributors to the total atmospheric organic aerosol content. Aerosol samples from living vegetation were collected by resuspension of surface wax and resin components liberated from the leaves of vegetation common to areas of the Grand Canyon. The samples were analyzed using high-resolution gas chromatography/mass spectrometry (GC/MS). Probable identification of compounds was made by comparison of sample spectra with National Institute of Standards and Technology (NIST) mass spectral references and positive identification of compounds was made when possible by comparison with authentic standards as well as NIST references. Using these references, we have been able to positively identify the presence of n-alkane and n-alkanoic acid homolog series in the surface waxes of the vegetation sampled. Several monoterpenes, sesquiterpenes, and diterpenes were identified also as possible biogenic aerosols which may contribute to the total organic aerosol abundance leading to visibility reduction in the Grand Canyon.

  11. Workshop and conference on Grand Challenges applications and software technology

    SciTech Connect (OSTI)

    Not Available

    1993-12-31T23:59:59.000Z

    On May 4--7, 1993, nine federal agencies sponsored a four-day meeting on Grand Challenge applications and software technology. The objective was to bring High-Performance Computing and Communications (HPCC) Grand Challenge applications research groups supported under the federal HPCC program together with HPCC software technologists to: discuss multidisciplinary computational science research issues and approaches, identify major technology challenges facing users and providers, and refine software technology requirements for Grand Challenge applications research. The first day and a half focused on applications. Presentations were given by speakers from universities, national laboratories, and government agencies actively involved in Grand Challenge research. Five areas of research were covered: environmental and earth sciences; computational physics; computational biology, chemistry, and materials sciences; computational fluid and plasma dynamics; and applications of artificial intelligence. The next day and a half was spent in working groups in which the applications researchers were joined by software technologists. Nine breakout sessions took place: I/0, Data, and File Systems; Parallel Programming Paradigms; Performance Characterization and Evaluation of Massively Parallel Processing Applications; Program Development Tools; Building Multidisciplinary Applications; Algorithm and Libraries I; Algorithms and Libraries II; Graphics and Visualization; and National HPCC Infrastructure.

  12. The Stephen and Nancy GrandThe Stephen and Nancy GrandThe Stephen and Nancy GrandThe Stephen and Nancy Grand Water ResearchWater ResearchWater ResearchWater Research

    E-Print Network [OSTI]

    Climate Change with Focus over the Mediterranean 9:55-10:20 Jan W. Hopmans, University of California: Global Climate Change, Environmental Risks and Water Scarcity #12;2 Monday, March 2Monday, March 2Monday, Director of the Stephen and Nancy Grand Water Research Institute, Technion Session 1 Global Climate Change

  13. Rio Grande Wild Turkey in Texas: Biology and Management

    E-Print Network [OSTI]

    Cathey, James; Melton, Kyle; Dreibelbis, Justin; Cavney, Bob; Locke, Shawn; DeMaso, Stephen; Schwertner, T. Wayne; Collier, Bret

    2007-09-11T23:59:59.000Z

    for the economy of Texas each year and money spent in the counties to which hunters travel is important to many townships (Fig. 14). Habitat Requirements Food It is not surprising to find that the diets of Rio Grande wild turkeys are broad, given...

  14. Topological p-n junctions in helical edge states

    E-Print Network [OSTI]

    Disha Wadhawan; Poonam Mehta; Sourin Das

    2014-11-24T23:59:59.000Z

    Quantum spin Hall effect is endowed with topologically protected edge modes with gapless Dirac spectrum. Applying a magnetic field locally along the edge leads to a gapped edge spectrum with opposite parity for winding of spin texture for conduction and valence band. Using Pancharatnam's prescription for geometric phase it is shown that mismatch of this parity across a p-n junction, which could be engineered into the edge by electrical gate induced doping, leads to a phase dependence in the two-terminal conductance which is purely topological (0 or $\\pi$). This fact results in a ${\\mathbb{Z}}_2$ classification of such junctions with an associated duality. Current asymmetry measurements which are shown to be robust against electron-electron interactions are proposed to infer this topology.

  15. Transient Dynamics in Molecular Junctions: Coherent Bichromophoric Molecular Electron Pumps

    E-Print Network [OSTI]

    Roie Volkovich; Uri Peskin

    2010-12-01T23:59:59.000Z

    The possibility of using single molecule junctions as electron pumps for energy conversion and storage is considered. It is argued that the small dimensions of these systems enable to make use of unique intra-molecular quantum coherences in order to pump electrons between two leads and to overcome relaxation processes which tend to suppress the pumping efficiency. In particular, we demonstrate that a selective transient excitation of one chromophore in a bi-chromophoric donor-bridge-acceptor molecular junction model yields currents which transfer charge (electron and holes) unevenly to the two leads in the absence of a bias potential. The utility of this mechanism for charge pumping in steady state conditions is proposed.

  16. Electron transport in normal-metal/superconductor junctions

    E-Print Network [OSTI]

    Yan, XZ; Zhao, HW; Hu, Chia-Ren.

    2000-01-01T23:59:59.000Z

    junction, the electron PRB 610163-1829/2000/61~21!/14759~6!/$15.00 l?superconductor junctions g Yan , College Station, Texas 77843-4242 , P.O. Box 603, Beijing 100080, China d Chia-Ren Hu , College Station, Texas 77843-4242 y 2000! systems, we...tanh@~v1eVs3!/2kBT#~L10 2L20 !, PRB 61ZHAO, AND CHIA-REN HU R f5tanh~v/2kBT !~R10 2R20 !, L1 0 5L 2 0? 5L0~k ,v1eVs31i0 !, R1 0 5R 2 0? 5R0~k ,v1i0 !. Here L1 0 and R1 0 (L 2 0 and R 2 0 ) are the retarded ~advanced! Green...

  17. Epithelial cell polarity and cell junctions in drosophila

    E-Print Network [OSTI]

    Tepass, Ulrich; Tanentzapf­ , Guy; Ward, Robert; Fehon, Richard

    2001-12-01T23:59:59.000Z

    18 Oct 2001 10:14 AR AR144-24.tex AR144-24.sgm ARv2(2001/05/10) P1: GJB Annu. Rev. Genet. 2001. 35:747?84 Copyright c 2001 by Annual Reviews. All rights reserved EPITHELIAL CELL POLARITY AND CELL JUNCTIONS IN DROSOPHILA Ulrich Tepass and Guy....35:747-784. Downloaded from arjournals.annualreviews.org by University of Kanas-Lawrence & Edwards on 09/26/05. For personal use only. 18 Oct 2001 10:14 AR AR144-24.tex AR144-24.sgm ARv2(2001/05/10) P1: GJB 748 TEPASS ET AL. THE SEPTATE JUNCTION...

  18. Instability of superconducting state in Josephson tunnel junctions

    SciTech Connect (OSTI)

    Nevirkovets, I.P.; Rudenko, =.M.

    1984-02-01T23:59:59.000Z

    Experiments on low-resistance Josephson Sn--I--Sn tunnel junctions have shown the superconductor to exhibit an instability that manifests itself on the current--voltage characteristic (IVC) in the form of a jumplike decrease of the voltage when it reaches a value 2..delta../e. When a weak magnetic field H is applied parallel to the junction plane and suppresses the nonstationary Josephson effect, the negative-slope IVC section vanishes. The H-dependent instability-current component, as well as the dc component of the Josephson current near 2..delta../e, can be approximated by a function of H/sup -2/. The singularity observed is attributed to the presence of a maximum of the superconducting component, due to the Riedel singularity, at V = 2..delta../e.

  19. Strain designed Josephson $?$ junction qubits with topological insulators

    E-Print Network [OSTI]

    Colin Benjamin

    2015-04-09T23:59:59.000Z

    A Josephson qubit is designed via the application of a tensile strain to a topological insulator surface sandwiched between two s-wave superconductors. The strain applied leads to a shift in the Dirac point without changing the pre-existing conducting states, on the surface of a topological insulator. Strain applied can be tuned to form a $\\pi$ junction in such a structure. Combining two such junctions in a ring architecture leads to the ground state of the ring being in doubly degenerate state- the "0" and "1" states of a qubit. A qubit designed this way is quite easily controlled via the tunable strain applied. We report on the conditions necessary to design such a qubit. Finally the operating time of a single qubit phase gate is derived.

  20. Nonlinear thermal control in an N-terminal junction

    E-Print Network [OSTI]

    Dvira Segal

    2007-09-27T23:59:59.000Z

    We demonstrate control over heat flow in an N-terminal molecular junction. Using simple model Hamiltonians we show that the heat current through two terminals can be tuned, switched, and amplified, by the temperature and coupling parameters of external gating reservoirs. We discuss two models: A fully harmonic system, and a model incorporating anharmonic interactions. For both models the control reservoirs induce thermal fluctuations of the transition elements between molecular vibrational states. We find that a fully harmonic model does not show any controllability, while for an anharmonic system the conduction properties of the junction strongly depend on the parameters of the gates. Realizations of the model system within nanodevices and macromolecules are discussed.

  1. Towards understanding junction degradation in cadmium telluride solar cells

    SciTech Connect (OSTI)

    Nardone, Marco, E-mail: marcon@bgsu.edu [Department of Environment and Sustainability, Bowling Green State University, Bowling Green, Ohio 43403 (United States)

    2014-06-21T23:59:59.000Z

    A degradation mechanism in cadmium telluride (CdTe/CdS) solar cells is investigated using time-dependent numerical modeling to simulate various temperature, bias, and illumination stress conditions. The physical mechanism is based on defect generation rates that are proportional to nonequilibrium charge carrier concentrations. It is found that a commonly observed degradation mode for CdTe/CdS solar cells can be reproduced only if defects are allowed to form in a narrow region of the absorber layer close to the CdTe/CdS junction. A key aspect of this junction degradation is that both mid-gap donor and shallow acceptor-type defects must be generated simultaneously in response to photo-excitation or applied bias. The numerical approach employed here can be extended to study other mechanisms for any photovoltaic technology.

  2. Nanopillar Spin Filter Tunnel Junctions with Manganite Barriers

    E-Print Network [OSTI]

    Prasad, Bhagwati; Egilmez, Mehmet; Schoofs, Frank; Fix, Thomas; Vickers, Mary E; Zhang, Wenrui; Jian, Jie; Wang, Haiyan; Blamire, Mark G

    2014-04-17T23:59:59.000Z

    of Materials Science and Metallurgy, University of Cambridge, 27 Charles Babbage Road, Cambridge, CB3 0FS, UK Department of Electrical and Computer Engineering, Texas A&M University, College Station, Texas, 77843-3128, USA KEYWORDS: Spin filter, Nano... magnetic memories, reprogrammable logic and quantum computers.1,2 These devices rely on the generation of highly spin-polarized currents. Spin filter tunnel junction (SFTJ) has emerged as a promising alternative for this purpose. A possible way...

  3. Charging Up For Formula Sun Grand Prix By Jonathan Nutzmann, Project Manager

    E-Print Network [OSTI]

    Janssen, Michel

    Charging Up For Formula Sun Grand Prix By Jonathan Nutzmann, Project Manager The team is currently busy with training for our next race, Formula Sun Grand Prix, which is com- ing up May 2nd-7th

  4. Efficient Irrigation for Water conservation in the Rio Grande Basin: 2010-2011 Progress and Accomplishments

    E-Print Network [OSTI]

    Kalisek, D.; Harris, B.L.; Runyan, C.; DeMouche, L.

    2011-06-21T23:59:59.000Z

    Since 2001, the Efficient Irrigation for Water Conservation in the Rio Grande Basin Federal Initiative known as the Rio Grande Basin Initiative (RGBI)has saved more than 5 million acre-feet of water. Researchers, Extension specialists, and county...

  5. Solar Community Comes Out in Full Force for SunShot Grand Challenge...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Solar Community Comes Out in Full Force for SunShot Grand Challenge Summit Solar Community Comes Out in Full Force for SunShot Grand Challenge Summit May 22, 2014 - 9:58am Addthis...

  6. UNIVERSIDADE FEDERAL DO RIO GRANDE DO NORTE UNIVERSIT DU SUD TOULON / VAR

    E-Print Network [OSTI]

    Paris-Sud XI, Universit de

    UNIVERSIDADE FEDERAL DO RIO GRANDE DO NORTE UNIVERSIT DU SUD TOULON / VAR PROGRAMA DE PS Federal do Rio Grande do Norte em Co-tutela com o Institut Materiaux Microelectronique et Nanosciences de

  7. An applied paleoecology case study: Bahia Grande, Texas prior to construction of the Brownsville Ship Channel

    E-Print Network [OSTI]

    Lichlyter, Stephen Alvah

    2006-08-16T23:59:59.000Z

    Bahia Grande is a large lagoon located within Laguna Atascosa National Wildlife Refuge in Cameron County, Texas. When the Brownsville Ship Channel was built along the southern end of the lagoon in 1936, Bahia Grande was ...

  8. Grand Traverse Band Renewable Energy Feasibility Study in Wind, Biomass and Solar

    SciTech Connect (OSTI)

    Suzanne McSawby, Project Director

    2008-12-31T23:59:59.000Z

    Renewable Energy Feasibility Study for wind, biomass, solar on the Grand Traverse Band tribal lands from 2005 - 2008

  9. Shunt-capacitor-assisted synchronization of oscillations in intrinsic Josephson junctions stack.

    SciTech Connect (OSTI)

    Martin, I.; Halasz, G. B.; Bulaevskii, L. N.; Koshelev, A. E.; Materials Science Division; LANL

    2010-08-06T23:59:59.000Z

    We show that a shunt capacitor, by coupling each Josephson junction to all the other junctions, stabilizes synchronized oscillations in an intrinsic Josephson junction stack biased by a dc current. This synchronization mechanism is similar to the previously discussed radiative coupling between junctions, however, it is not defined by the geometry of the stack. It is particularly important in crystals with smaller numbers of junctions (where the radiation coupling is weak), and is comparable with the effect of strong super-radiation in crystals with many junctions. The shunt also helps to enter the phase-locked regime in the beginning of the oscillations, after switching on the bias current. Furthermore, it may be used to tune radiation power, which drops as the shunt capacitance increases.

  10. Process For Direct Integration Of A Thin-Film Silicon P-N Junction Diode With A Magnetic Tunnel Junction

    DOE Patents [OSTI]

    Toet, Daniel (Mountain View, CA); Sigmon, Thomas W. (Albuquerque, NM)

    2005-08-23T23:59:59.000Z

    A process for direct integration of a thin-film silicon p-n junction diode with a magnetic tunnel junction for use in advanced magnetic random access memory (MRAM) cells for high performance, non-volatile memory arrays. The process is based on pulsed laser processing for the fabrication of vertical polycrystalline silicon electronic device structures, in particular p-n junction diodes, on films of metals deposited onto low temperature-substrates such as ceramics, dielectrics, glass, or polymers. The process preserves underlayers and structures onto which the devices are typically deposited, such as silicon integrated circuits. The process involves the low temperature deposition of at least one layer of silicon, either in an amorphous or a polycrystalline phase on a metal layer. Dopants may be introduced in the silicon film during or after deposition. The film is then irradiated with short pulse laser energy that is efficiently absorbed in the silicon, which results in the crystallization of the film and simultaneously in the activation of the dopants via ultrafast melting and solidification. The silicon film can be patterned either before or after crystallization.

  11. Process for direct integration of a thin-film silicon p-n junction diode with a magnetic tunnel junction

    DOE Patents [OSTI]

    Toet, Daniel (Mountain View, CA); Sigmon, Thomas W. (Albuquerque, NM)

    2003-01-01T23:59:59.000Z

    A process for direct integration of a thin-film silicon p-n junction diode with a magnetic tunnel junction for use in advanced magnetic random access memory (MRAM) cells for high performance, non-volatile memory arrays. The process is based on pulsed laser processing for the fabrication of vertical polycrystalline silicon electronic device structures, in particular p-n junction diodes, on films of metals deposited onto low temperature-substrates such as ceramics, dielectrics, glass, or polymers. The process preserves underlayers and structures onto which the devices are typically deposited, such as silicon integrated circuits. The process involves the low temperature deposition of at least one layer of silicon, either in an amorphous or a polycrystalline phase on a metal layer. Dopants may be introduced in the silicon film during or after deposition. The film is then irradiated with short pulse laser energy that is efficiently absorbed in the silicon, which results in the crystallization of the film and simultaneously in the activation of the dopants via ultrafast melting and solidification. The silicon film can be patterned either before or after crystallization.

  12. Process for direct integration of a thin-film silicon p-n junction diode with a magnetic tunnel junction

    DOE Patents [OSTI]

    Toet, Daniel; Sigmon, Thomas W.

    2004-12-07T23:59:59.000Z

    A process for direct integration of a thin-film silicon p-n junction diode with a magnetic tunnel junction for use in advanced magnetic random access memory (MRAM) cells for high performance, non-volatile memory arrays. The process is based on pulsed laser processing for the fabrication of vertical polycrystalline silicon electronic device structures, in particular p-n junction diodes, on films of metals deposited onto low temperature-substrates such as ceramics, dielectrics, glass, or polymers. The process preserves underlayers and structures onto which the devices are typically deposited, such as silicon integrated circuits. The process involves the low temperature deposition of at least one layer of silicon, either in an amorphous or a polycrystalline phase on a metal layer. Dopants may be introduced in the silicon film during or after deposition. The film is then irradiated with short pulse laser energy that is efficiently absorbed in the silicon, which results in the crystallization of the film and simultaneously in the activation of the dopants via ultrafast melting and solidification. The silicon film can be patterned either before or after crystallization.

  13. Mode stabilization mechanism of buried waveguide lasers with lateral diffused junctions

    SciTech Connect (OSTI)

    Yu, K.L.; Chen, T.R.; Koren, U.; Lau, K.Y.; Margalit, S.; Yariv, A.

    1983-03-01T23:59:59.000Z

    The mode stabilization behavior of the buried active waveguide with lateral diffused junction is theoretically investigated. The study shows that for an active waveguide of width around 5 ..mu..m with a lateral diffused junction in the middle, the single fundamental transverse mode is preferred as the injection level is raised. The theoretical results are found to be in good agreement with experimental results observed in the groove transverse junction InGaAsP/InP laser.

  14. Enhancement of tunnel magnetoresistance in magnetic tunnel junction by a superlattice barrier

    SciTech Connect (OSTI)

    Chen, C. H.; Hsueh, W. J., E-mail: hsuehwj@ntu.edu.tw [Nanomagnetism Group, Department of Engineering Science and Ocean Engineering, National Taiwan University, 1, Sec. 4, Roosevelt Road, Taipei 10660, Taiwan (China)

    2014-01-27T23:59:59.000Z

    Tunnel magnetoresistance of magnetic tunnel junction improved by a superlattice barrier composed of alternate layers of a nonmagnetic metal and an insulator is proposed. The forbidden band of the superlattice is used to predict the low transmission range in the superlattice barrier. By forbidding electron transport in the anti-parallel configuration, the tunnel magnetoresistance is enhanced in the superlattice junction. The results show that the tunnel magnetoresistance ratio for a superlattice magnetic tunnel junction is greater than that for traditional single or double barrier junctions.

  15. Superconducting qubit without Josephson junctions manipulated by orbital angular momentum of light

    E-Print Network [OSTI]

    Sang Jae Yun

    2015-05-16T23:59:59.000Z

    Previous superconducting qubits have used Josephson junctions as an essential part which gives anharmonicity to make well-separated energy-level spacings. However, since a superconductor ring without Josephson junctions has intrinsically well-separated energy-level spacings, Josephson junctions are not necessary as long as one can achieve single-qubit operations. We show that orbital angular momentum (OAM) of light can be adopted as a qubit-control means and can eliminate the need of Josephson junctions. We provide theoretical analysis for the interaction between a superconducting ring and OAM of light. Feasibility study reveals that the proposed qubit has many advantages over the previous ones.

  16. Comment on "Analysis of quantum coherent semiconductor quantum dot p-i-n junction photovoltaic cells"

    E-Print Network [OSTI]

    Scully, Marlan O

    2010-01-01T23:59:59.000Z

    This is a comment on PRL paper by A.P. Kirk "Analysis of quantum coherent semiconductor quantum dot p-i-n junction photovoltaic cells"

  17. City of Grand Rapids Building Solar Roof Demonstration

    SciTech Connect (OSTI)

    DeClercq, Mark; Martinez, Imelda

    2012-08-31T23:59:59.000Z

    Grand Rapids, Michigan is striving to reduce it environmental footprint. The municipal government organization has established environmental sustainability policies with the goal of securing 100% of its energy from renewable sources by 2020. This report describes the process by which the City of Grand Rapids evaluated, selected and installed solar panels on the Water/Environmental Services Building. The solar panels are the first to be placed on a municipal building. Its new power monitoring system provides output data to assess energy efficiency and utilization. It is expected to generate enough clean solar energy to power 25 percent of the building. The benefit to the public includes the economic savings from reduced operational costs for the building; an improved environmentally sustainable area in which to live and work; and increased knowledge about the use of solar energy. It will serve as a model for future energy saving applications.

  18. The Origin of Families and $SO(18)$ Grand Unification

    E-Print Network [OSTI]

    BenTov, Yoni

    2015-01-01T23:59:59.000Z

    We exploit a recent advance in the study of topological superconductors to propose a solution to the nagging family puzzle of particle physics in the context of SO(18) (or more correctly, Spin(18)) grand unification. We argue that Yukawa couplings of intermediate strength may allow the mirror matter and extra families to decouple at arbitrarily high energies. As was clear from the existing literature, we have to go beyond the Higgs mechanism in order to solve the family puzzle. A pattern of symmetry breaking which results in the SU(5) grand unified theory with horizontal or family symmetry USp(4) = Spin(5) (or more loosely, SO(5)) leaves exactly three light families of matter and seems particularly appealing. We comment briefly on an alternative scheme involving discrete non-abelian family symmetries. In a few lengthy appendices we review some of the pertinent condensed matter theory.

  19. Citrus Varieties for the Lower Rio Grande Valley.

    E-Print Network [OSTI]

    Wood, J. F. (John Fielding); Friend, W. H. (William Heartsill)

    1941-01-01T23:59:59.000Z

    Lf BRARY, /A & NI COLLEGE, b TEXAS AGRICULTURAL EXPERIMENT STATION A. B. CONNER, DIRECTOR, College Station, Texas CITRUS VARIETIES FOR THE LOWER RIO GRANDE VALLEY Mr. H. FRIEND AND J. F. WOOD Division of Horticulture LIBRARY \\gxict... perishable nature of this type of fruit. Limes and lemons may be grown by persons who are financially able to equip their orchards with heaters. There are many types of citrus fruits that may be grown as ornamentals or for special purposes, but none...

  20. Deciphering Solar Magnetic Activity: On Grand Minima in Solar Activity

    E-Print Network [OSTI]

    McIntosh, Scott W

    2015-01-01T23:59:59.000Z

    The Sun provides the energy necessary to sustain our existence. While the Sun provides for us, it is also capable of taking away. The weather and climatic scales of solar evolution and the Sun-Earth connection are not well understood. There has been tremendous progress in the century since the discovery of solar magnetism - magnetism that ultimately drives the electromagnetic, particulate and eruptive forcing of our planetary system. There is contemporary evidence of a decrease in solar magnetism, perhaps even indicators of a significant downward trend, over recent decades. Are we entering a minimum in solar activity that is deeper and longer than a typical solar minimum, a "grand minimum"? How could we tell if we are? What is a grand minimum and how does the Sun recover? These are very pertinent questions for modern civilization. In this paper we present a hypothetical demonstration of entry and exit from grand minimum conditions based on a recent analysis of solar features over the past 20 years and their p...

  1. Natural regeneration in two central Idaho grand fir habitat types. Forest Service research paper

    SciTech Connect (OSTI)

    Geier-Hayes, K.

    1994-03-01T23:59:59.000Z

    Natural regeneration of five conifer species was surveyed in two central Idaho grand fir habitat types. The habitat types range from warm, dry (grand fir/white spirea) to mesic (Grand fir/Mountain Maple). Four harvest-regeneration methods and four site preparation techniques were sampled. Recommendations for obtaining natural regeneration vary primarily by habitat type. Conifer seedlings in the warm, dry grand fir white spirea habitat type require site protection for establishment. In the mesic grand fir/mountain maple habitat type, tall shrub potential can reduce the opportunity to establish early seral conifer species.

  2. Iron Junction, Minnesota: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are8COaBulkTransmissionSitingProcess.pdfGetecGtelInterias Solar Energy JumpIrem Geothermal Power PlantUtah:Junction,

  3. Monmouth Junction, New Jersey: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov YouKizildere I Geothermal Pwer Plant JumpMarysville,Missoula, Montana:Northeast Asia | Open EnergyMongoliaJunction, New

  4. Inverted GaInP/(In)GaAs/InGaAs Triple-Junction Solar Cells with Low-Stress Metamorphic Bottom Junctions: Preprint

    SciTech Connect (OSTI)

    Geisz, J. F.; Kurtz, S. R.; Wanlass, M. W.; Ward, J. S.; Duda, A.; Friedman, D. J.; Olson, J. M.; McMahon, W. E.; Moriarty, T. E.; Kiehl, J. T.; Romero, M. J.; Norman, A. G.; Jones, K. M.

    2008-05-01T23:59:59.000Z

    We demonstrate high efficiency performance in two ultra-thin, Ge-free III-V semiconductor triple-junction solar cell device designs grown in an inverted configuration. Low-stress metamorphic junctions were engineered to achieve excellent photovoltaic performance with less than 3 x 106 cm-2 threading dislocations. The first design with band gaps of 1.83/1.40/1.00 eV, containing a single metamorphic junction, achieved 33.8% and 39.2% efficiencies under the standard one-sun global spectrum and concentrated direct spectrum at 131 suns, respectively. The second design with band gaps of 1.83/1.34/0.89 eV, containing two metamorphic junctions achieved 33.2% and 40.1% efficiencies under the standard one-sun global spectrum and concentrated direct spectrum at 143 suns, respectively.

  5. Photovoltaic nanopillar radial junction diode architecture enhanced by integrating semiconductor quantum dot nanocrystals as light harvesters

    E-Print Network [OSTI]

    Demir, Hilmi Volkan

    Photovoltaic nanopillar radial junction diode architecture enhanced by integrating semiconductor hybridized, radial p-n junction based, nanopillar solar cells with photovoltaic performance enhanced. By furnishing Si based nanopillar photovoltaic diodes with CdSe quantum dots, we experimentally showed up

  6. Reliability of normal-state currentvoltage characteristics as an indicator of tunnel-junction barrier quality

    E-Print Network [OSTI]

    Rabson, David A.

    Department of Physics, PHY 114, University of South Florida, Tampa, Florida 33620 Received 21 April 2000 conductance below Tc , we divide samples into junctions with an integral barrier and junctions having metallic pinholes in the barrier. 2000 American Institute of Physics. S0003-6951 00 01138-4 Ferromagnet

  7. Low temperature junction growth using hot-wire chemical vapor deposition

    DOE Patents [OSTI]

    Wang, Qi; Page, Matthew; Iwaniczko, Eugene; Wang, Tihu; Yan, Yanfa

    2014-02-04T23:59:59.000Z

    A system and a process for forming a semi-conductor device, and solar cells (10) formed thereby. The process includes preparing a substrate (12) for deposition of a junction layer (14); forming the junction layer (14) on the substrate (12) using hot wire chemical vapor deposition; and, finishing the semi-conductor device.

  8. C-V Profiling of Ultrashallow Junctions using a Step-Like Background Doping Profile

    E-Print Network [OSTI]

    Technische Universiteit Delft

    C-V Profiling of Ultrashallow Junctions using a Step-Like Background Doping Profile Milos Popadi, Delft, The Netherlands m.popadic@tudelft.nl Abstract--A novel C-V profiling method that enables profiling of ultrashallow and ultra-abrupt junctions is described. The method takes advantage of a peculiar

  9. Tight JunctionAssociated Signaling Pathways Modulate Cell Proliferation in Uveal Melanoma

    E-Print Network [OSTI]

    Tight JunctionAssociated Signaling Pathways Modulate Cell Proliferation in Uveal Melanoma Ashwath the role of tight junction (TJ)associ- ated signaling pathways in the proliferation of uveal melanoma. METHODS. Human uveal melanoma cell lines overexpressing the TJ molecule blood vessel epicardial substance

  10. A new junction termination technique: the Deep Trench Termination (DT2

    E-Print Network [OSTI]

    Paris-Sud XI, Universit de

    A new junction termination technique: the Deep Trench Termination (DT2 ) L. Tholier1,2 , H. Mahfoz. In this work, a new concept of low cost, low surface and high efficiency junction termination for power devices is presented and experimentally validated. This termination is based on a large and deep trench filled by BCB

  11. Efficient broadband energy transfer via momentum matching at hybrid junctions of guided-waves

    E-Print Network [OSTI]

    Efficient broadband energy transfer via momentum matching at hybrid junctions of guided://apl.aip.org/about/rights_and_permissions #12;Efficient broadband energy transfer via momentum matching at hybrid junctions of guided, The American University in Cairo, New Cairo 11835, Egypt (Received 2 August 2012; accepted 5 September 2012

  12. OPTIMIZATION OF a-SiGe BASED TRIPLE, TANDEM AND SINGLE-JUNCTION SOLAR Xunming Deng

    E-Print Network [OSTI]

    Deng, Xunming

    OPTIMIZATION OF a-SiGe BASED TRIPLE, TANDEM AND SINGLE-JUNCTION SOLAR CELLS Xunming Deng Department cells, all employing high- quality a-SiGe cells, are reviewed in this paper. Incorporating various improvements in device fabrication, the UT group fabricated 1) triple-junction a-Si/a-SiGe/a- SiGe solar cells

  13. Gallium phosphide high-temperature bipolar junction transistor

    SciTech Connect (OSTI)

    Zipperian, T.E.; Dawson, L.R.; Caffin, R.J.

    1981-03-01T23:59:59.000Z

    Preliminary results are reported on the development of a high-temperature (> 350/sup 0/C) gallium phosphide bipolar junction transistor (BJT) for goethermal and other energy applications. This four-layer p/sup +/n/sup -/pp/sup +/ structure was fromed by liquid phase epitaxy using a supercooling technique to insure uniform nucleation of the thin layers. Magnesium was used as the p-type dopant to avoid excessive out-diffusion into the lightly doped base. By appropriate choice of electrodes, the device may also be driven as an n-channel junction field-effect transistor. The gallium phosphide BJT is observed to have a common-emitter current gain peaking in the range of 6 to 10 (for temperatures from 20/sup 0/C to 400/sup 0/C) and a room-temperature, punchthrough-limited, collector-emitter breakdown voltage of approximately -6V. Other parameters of interest include an f/sub/ = 400 KHz (at 20/sup 0/C) and a collector base leakage current = 200 ..mu..A (at 350/sup 0/C).

  14. Josephson junction of non-Abelian superconductors and non-Abelian Josephson vortices

    E-Print Network [OSTI]

    Nitta, Muneto

    2015-01-01T23:59:59.000Z

    A Josephson junction is made of two superconductors sandwiching an insulator, and a Josephson vortex is a magnetic vortex absorbed into the Josephson junction, whose dynamics can be described by the sine-Gordon equation. In a field theory framework, a flexible Josephson junction was proposed, in which the Josephson junction is represented by a domain wall separating two condensations and a Josephson vortex is a sine-Gordon soliton in the domain wall effective theory. In this paper, we propose a Josephson junction of non-Abelian color superconductors, that is described by a non-Abelian domain wall, and show that a non-Abelian vortex (color magnetic flux tube) absorbed into it is a non-Abelian Josephson vortex represented as a non-Abelian sine-Gordon soliton in the domain wall effective theory.

  15. Measurement of Component Cell Current-Voltage Characteristics in a Tandem-JunctionTwo-Terminal Solar Cell

    E-Print Network [OSTI]

    Deng, Xunming

    Measurement of Component Cell Current-Voltage Characteristics in a Tandem- JunctionTwo-Terminal-V) characteristics in a tandem-junction two-terminal solar cell is described. The measurements are performed with (a, solar cells Introduction In the course of fabricating and optimizing multiple-junction, two-terminal

  16. Grande Ronde Endemic Spring Chinook Project - ODFW, 2008 Annual Report.

    SciTech Connect (OSTI)

    Patterson, Scott

    2009-04-10T23:59:59.000Z

    Core activities of the Grande Ronde Endemic Spring Chinook Supplementation Program (GRESCSP) are funded through the authority of the Lower Snake River Fish and Wildlife Compensation Plan (LSRCP). The LSRCP program was approved by the Water Resources Development Act of 1976, PL 94-587, Section 102, 94th Congress substantially in accordance with the Special Report, LSRCP, June 1975 on file with the Chief of Engineers. The LSRCP was prepared and submitted in compliance with the Fish and Wildlife Coordination Act of 1958, PL 85-624, 85th Congress, August 12, 1958 to mitigate for the losses of fish and wildlife caused by the construction of dams on lower Snake River. The GRESCSP is an artificial propagation program that was initiated by Bonneville Power Administrations Fish and Wildlife program in the mid 1990's. The intent of this program was to change the mitigation aspect of the LSRCP program (harvest mitigation) to an integrated supplementation program; inasmuch as, hatchery produced fish could be experimentally used as a recovery tool and fish surplus to mitigation would be available for in-place and in-kind harvest. Fish production is still authorized by the LSRCP with the original mitigation return goal of 5,860 adult spring Chinook to the project area. The GRESCSP was developed with two primary components: (1) conventional broodstock (projects 199800702; 199800703; 199800704) and (2) captive brood (projects 199801001; 199801006). The GRESCSP relies on cooperative M&E efforts from the LSRCP including setting aside the Wenaha and Minam tributaries as natural production reserves components used for reference streams. The GRESCSP, coordinated with federal and tribal partners, identifies production levels for both propagation components and weir management strategies for each of the three supplemented tributary areas within the Grande Ronde Sub-basin. The three supplemented areas are Catherine Creek, Lostine River, and upper Grande Ronde River. Lookingglass Creek, an extirpated area, will be stocked (smolts and adults) with Catherine Creek origin salmon to initiate natural production in unseeded habitat, and to initiate future harvest opportunities. The current production levels have been incorporated into the U.S. v. Oregon Interim Management Agreement. The purpose of this contract is to integrate Bonneville Power Administration (BPA) efforts with the Lower Snake River Compensation Plan (LSRCP) program utilizing Lookingglass Hatchery as the primary rearing facility. BPA constructed an adult holding and spawning structure on the hatchery grounds; however, maintenance of this infrastructure was discontinued due to funding limitation and transferred to the LSRCP program in 2007. These integrated efforts focus on holding and spawning adults, rearing juveniles, fish health, and monitoring natural production (Redd counts) for Catherine Creek, Lostine River, and Upper Grande Ronde stocks.

  17. 6-arm blue grand design of NGC 309

    E-Print Network [OSTI]

    Chernin, A D

    2015-01-01T23:59:59.000Z

    The geometry and physics of the spiral structure of the giant Hubble type Sc galaxy NGC 309 is studied. A schematic of two patterns with three arms in each is suggested for the blue spiral. The red and blue patterns form together a grand design with two-fold symmetry. A possible gas-dynamics explanation of the phenomenon is suggested which shows how the two-arm red spiral may induce the formation of the six-arm coherent blue spiral. Key words: galaxies: individual (NGC 309) -- galaxies: spiral

  18. Methods toward improving 'Grande Rio 66' pepper seed germination

    E-Print Network [OSTI]

    Rogers, Barbara Anna

    1980-01-01T23:59:59.000Z

    . Table 8 Cumulative daily germination percentage of 'Grande Rio 66' seeds after aerating in distilled water for 12, 24, 36, and 48 hours at a temperature of 27+2oC, dried for 24 hours and compared with dry seed placed in petri dishes at the same time... pumps through a series of tubing and rubber corks. After treatment, the seeds were removed from the tubes and dried for 24 hours at a temperature of approximately 38oC. Seeds were then placed in 100 x 15 mm sterilized, d1sposable, plast1c Petri dishes...

  19. Gravitational Collapse and Radiation of Grand Unified Theory

    E-Print Network [OSTI]

    Yi-Fang Chang

    2007-10-02T23:59:59.000Z

    The infinite gravitational collapse of any supermassive stars should pass through an energy scale of the grand unified theory (GUT). After nucleon-decays, the supermassive star will convert nearly all its mass into energy, and produce the radiation of GUT. It may probably explain some ultrahigh energy puzzles in astrophysics, for example, quasars and gamma-ray bursts (GRB), etc. This is similar with a process of the Big Bang Universe with a time-reversal evolution in much smaller space scale and mass scale. In this process the star seems be a true white hole.

  20. Sugarcane Trials in the Lower Rio Grande Valley of Texas.

    E-Print Network [OSTI]

    Cowley, W. R.; Smith, B. A.

    1969-01-01T23:59:59.000Z

    for Sugarcane Planting, Hills Farm Near Harlingen, Texas", Gulf Coast Magazine, Octo- ber 1908. 7. Anon. "Big Sugar Mills on Rio Grande ----", San Antonio Express, October 10, 1910. 8. Anon. Official Methods of Analysis of the Association of Ojficial.... 21. Hebcrt, L. P. "Culture of Sugarcane for Sugar Pmdw tion in Louisiana", Agriculture Hant1l)ook No. 262, Ap cultural Research Service, USDA, June 19Gf. I: 22. Hebert, L. Y. "The 1968 Sugarcane Variety Cearu L Florida", USDA CR-80-68, Nov. 1968...

  1. EV Everywhre Grand Challenge - Battery Status and Cost Reduction Prospects

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page onYouTube YouTube Note: Since the YouTube|6721 Federal Register / Vol.6: RecordJune- BatteryVehicles | EV Everywhere Grand

  2. Grand Challenges | U.S. DOE Office of Science (SC)

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOnItem NotEnergy,ARMFormsGasReleaseSpeechesHallNot Logged In You mustGlossaryGrand

  3. Casa Grande, Arizona: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to:EzfeedflagBiomassSustainableCSL GasPermitsGreenCarrizoCarteretGrande, Arizona: Energy

  4. EV Everywhere Grand Challenge Kick-Off | Department of Energy

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

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  5. Sandia Energy - Upper Rio Grande Simulation Model (URGSiM)

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of ScienceandMesa del Sol Home DistributionTransportation Safety Home StationaryUpper Rio Grande

  6. Agropecuaria e Industrial Serra Grande | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to:Ezfeedflag JumpID-fTriWildcat 1AMEE JumpAeroWindcapital GmbH JumpAgroergSerra Grande Jump to:

  7. SunShot Grand Challenge Summit | Department of Energy

    Energy Savers [EERE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnual Siteof Energy 2, 2015 - January 16, 2015 Summary of DecisionsSun RisesSunShotSunShot Grand

  8. SunShot Grand Challenge Summit | Department of Energy

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

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  9. City of Grand Haven, Michigan (Utility Company) | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnual Siteof EnergyInnovationin Urban Transport |CityCity ofCity ofCityCity ofGrand Haven,

  10. City of Grand Island, Nebraska (Utility Company) | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnual Siteof EnergyInnovationin Urban Transport |CityCity ofCity ofCityCity ofGrand Haven,City

  11. Grand Forks County, North Dakota: Energy Resources | Open Energy

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are8COaBulkTransmissionSitingProcess.pdfGetec AG Contracting JumpGove County, Kansas:GrahamBlanc,Grand Electric

  12. Grand Forks, North Dakota: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are8COaBulkTransmissionSitingProcess.pdfGetec AG Contracting JumpGove County, Kansas:GrahamBlanc,Grand ElectricForks,

  13. Grand Haven, Michigan: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are8COaBulkTransmissionSitingProcess.pdfGetec AG Contracting JumpGove County, Kansas:GrahamBlanc,Grand

  14. Grand Island, New York: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are8COaBulkTransmissionSitingProcess.pdfGetec AG Contracting JumpGove County, Kansas:GrahamBlanc,GrandIsland, New York:

  15. Grand Isle County, Vermont: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are8COaBulkTransmissionSitingProcess.pdfGetec AG Contracting JumpGove County, Kansas:GrahamBlanc,GrandIsland, New

  16. Grand Ledge, Michigan: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are8COaBulkTransmissionSitingProcess.pdfGetec AG Contracting JumpGove County, Kansas:GrahamBlanc,GrandIsland,Ledge,

  17. Grand Valley Rrl Pwr Line, Inc | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are8COaBulkTransmissionSitingProcess.pdfGetec AG Contracting JumpGove County,Texas: Energy ResourcesGrand Valley Rrl

  18. Grand View Estates, Colorado: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are8COaBulkTransmissionSitingProcess.pdfGetec AG Contracting JumpGove County,Texas: Energy ResourcesGrand Valley

  19. Grand Challenges | U.S. DOE Office of Science (SC)

    Office of Science (SC) Website

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  20. Arroyo Grande, California: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

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  1. Grand Challenges of Characterization & Modeling of Cellulose Nanomaterials

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn't YourTransport(Fact Sheet), Geothermal TechnologiesGeothermalGo forDepartment ofGrand Challenges

  2. Grand Challenges: Request for Information on the Subsurface | Department of

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

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  3. Rio Grande, New Jersey: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov YouKizildere IRaghuraji Agro Industries Pvt Ltd Jump to: navigation,Maze -Richton Park,RidgeviewRifton,County,Grande, New

  4. Grand Rapids Public Util Comm | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnual SiteofEvaluating AGeothermal/Exploration <GlacialGolden SpreadGomtiofGraham CountyGranGrand

  5. Geomorphology of plutonium in the Northern Rio Grande

    SciTech Connect (OSTI)

    Graf, W.L. [Arizona Univ., Tempe, AZ (United States). Dept., of Geography

    1993-03-01T23:59:59.000Z

    Nearly all of the plutonium in the natural environment of the Northern Rio Grande is associated with soils and sediment, and river processes account for most of the mobility of these materials. A composite regional budget for plutonium based on multi-decadal averages for sediment and plutonium movement shows that 90 percent of the plutonium moving into the system is from atmospheric fallout. The remaining 10 percent is from releases at Los Alamos. Annual variation in plutonium flux and storage exceeds 100 percent. The contribution to the plutonium budget from Los Alamos is associated with relatively coarse sediment which often behaves as bedload in the Rio Grande. Infusion of these materials into the main stream were largest in 1951, 1952, 1957, and 1968. Because of the schedule of delivery of plutonium to Los Alamos for experimentation and weapons manufacturing, the latter two years are probably the most important. Although the Los Alamos contribution to the entire plutonium budget was relatively small, in these four critical years it constituted 71--86 percent of the plutonium in bedload immediately downstream from Otowi.

  6. Grand Unification as a Bridge Between String Theory and Phenomenology

    SciTech Connect (OSTI)

    Pati, Jogesh C.

    2006-06-09T23:59:59.000Z

    In the first part of the talk, I explain what empirical evidence points to the need for having an effective grand unification-like symmetry possessing the symmetry SU(4)-color in 4D. If one assumes the premises of a future predictive theory including gravity--be it string/M theory or a reincarnation--this evidence then suggests that such a theory should lead to an effective grand unification-like symmetry as above in 4D, near the string-GUT-scale, rather than the standard model symmetry. Advantages of an effective supersymmetric G(224) = SU(2){sub L} x SU(2){sub R} x SU(4){sup c} or SO(10) symmetry in 4D in explaining (1) observed neutrino oscillations, (2) baryogenesis via leptogenesis, and (3) certain fermion mass-relations are noted. And certain distinguishing tests of a SUSY G(224) or SO(10)-framework involving CP and flavor violations (as in {mu} {yields} e{gamma}, {tau} {yields} {mu}{gamma}, edm's of the neutron and the electron) as well as proton decay are briefly mentioned. Recalling some of the successes we have had in our understanding of nature so far, and the current difficulties of string/M theory as regards the large multiplicity of string vacua, some comments are made on the traditional goal of understanding vis a vis the recently evolved view of landscape and anthropism.

  7. INSIDE Waitt Advanced Biophotonics Center Grand Opening One on One with...Thomas Albright REMEMBERINGWylie

    E-Print Network [OSTI]

    Bellugi, Ursula

    INSIDE Waitt Advanced Biophotonics Center Grand Opening One on One with...Thomas Albright Discovery of plant proteins may boost agricultural yields and biofuel production 20 Complex wiring

  8. International Agriculture Fellowship: A Gates Foundation Grand Challenges Exploration in Endophytic Biological Control

    E-Print Network [OSTI]

    Ferrara, Katherine W.

    International Agriculture Fellowship: A Gates Foundation Grand Challenges Exploration in Endophytic Challenges Explorations Grant (see program overview) to develop crop seeds with endophytic fungal

  9. EIS-0344: Grand Coulee-Bell 500 kV Transmission Line

    Broader source: Energy.gov [DOE]

    This EIS analyzes DOE's proposed action for the construction and operation of the proposed Grand Coulee-Bell 500-kV Transmission Line Project.

  10. Contactless electronic transport in a bio-molecular junction

    SciTech Connect (OSTI)

    Hossain, Faruque M., E-mail: fhossain@unimelb.edu.au; Al-Dirini, Feras; Skafidas, Efstratios [Department of Electrical and Electronic Engineering, The University of Melbourne, Parkville 3010 (Australia); Center for Neural Engineering (CfNE), The University of Melbourne, Parkville 3010 (Australia)

    2014-07-28T23:59:59.000Z

    Molecular electronics hold promise for next generation ultra-low power, nano-scale integrated electronics. The main challenge in molecular electronics is to make a reliable interface between molecules and metal electrodes. Interfacing metals and molecules detrimentally affects the characteristics of nano-scale molecular electronic devices. It is therefore essential to investigate alternative arrangements such as contact-less tunneling gaps wherever such configurations are feasible. We conduct ab initio density functional theory and non-equilibrium Green's functions calculations to investigate the transport properties of a biocompatible glycine molecular junction. By analyzing the localized molecular orbital energy distributions and transmission probabilities in the transport-gap, we find a glycine molecule confined between two gold electrodes, without making a contact, is energetically stable and possesses high tunneling current resembling an excellent ohmic-like interface.

  11. Linear nanometric tunnel junction sensors with exchange pinned sensing layer

    SciTech Connect (OSTI)

    Leitao, D. C., E-mail: dleitao@inesc-mn.pt; Silva, A. V.; Cardoso, S. [INESC-MN and IN, Rua Alves Redol 9, 1000-029 Lisboa (Portugal); Instituto Superior Tcnico (IST), Universidade de Lisboa, Av. Rovisco Pais, 1000-029 Lisboa (Portugal); Ferreira, R.; Paz, E.; Deepack, F. L. [INL, Av. Mestre Jose Veiga, 4715-31 Braga (Portugal); Freitas, P. P. [INESC-MN and IN, Rua Alves Redol 9, 1000-029 Lisboa (Portugal); INL, Av. Mestre Jose Veiga, 4715-31 Braga (Portugal)

    2014-05-07T23:59:59.000Z

    Highly sensitive nanosensors with high spatial resolution provide the necessary features for high accuracy imaging of isolated magnetic nanoparticles. In this work, we report the fabrication and characterization of MgO-barrier magnetic tunnel junction nanosensors, with two exchange-pinned electrodes. The perpendicular magnetization configuration for field sensing is set using a two-step annealing process, where the second annealing temperature was optimized to yield patterned sensors responses with improved linearity. The optimized circular nanosensors show sensitivities up to 0.1%/Oe, larger than previously reported for nanometric sensors and comparable to micrometric spin-valves. Our strategy avoids the use of external permanent biasing or demagnetizing fields (large for smaller structures) to achieve a linear response, enabling the control of the linear operation range using only the stack and thus providing a small footprint device.

  12. Stability of winding cosmic wall lattices with X type junctions

    E-Print Network [OSTI]

    Brandon Carter

    2009-11-30T23:59:59.000Z

    This work confirms the stability of a class of domain wall lattice models that can produce accelerated cosmological expansion, with pressure to density ratio $w=-1/3$ at early times, and with $w=-2/3$ at late times when the lattice scale becomes large compared to the wall thickness. For walls of tension $T_{I}$, the relevant X type junctions could be unstable (for a sufficiently acute intersection angle $\\alpha$) against separation into a pair of Y type junctions joined by a compound wall, only if the tension $T_{II}$ of the latter were less than $2T_{I}$ (and for an approximately right-angled intersection if it were less that $\\sqrt{2} T_{I}$) which can not occur in the class considered here. In an extensive category of multicomponent scalar field models of forced harmonic (linear or non-linear) type it is shown how the relevant tension -- which is the same as the surface energy density $U$ of the wall -- can be calculated as the minimum (geodesic) distance between the relevant vacuum states as measured on the space of field values $\\Phi^i$ using a positive definite (Riemannian) energy metric $dU^2=\\tilde G_{ij} d\\Phi^i d\\Phi^j$ that is obtained from the usual kinetic metric (which is flat for a model with ordinary linear kinetic part) by application of a conformal factor proportional to the relevant potential function $V$. For suitably periodic potential functions there will be corresponding periodic configurations -- with parallel walls characterised by incrementation of a winding number -- in which the condition for stability of large scale bunching modes is shown to be satisfied automatically. It is suggested that such a configuration -- with a lattice lengthscale comparable to intergalactic separation distances -- might have been produced by a late stage of cosmological inflation.

  13. Aberration-corrected transmission electron microscopy analyses of GaAs/Si interfaces in wafer-bonded multi-junction solar cells

    E-Print Network [OSTI]

    Dunin-Borkowski, Rafal E.

    -bonded multi-junction solar cells Dietrich Hussler a , Lothar Houben b , Stephanie Essig c , Mert Kurttepeli online 20 July 2013 Keywords: Multi-junction solar cell Wafer bonding Interfaces Aberration corrected and composition fluctuations near interfaces in wafer-bonded multi-junction solar cells. Multi-junction solar

  14. Improved method of preparing p-i-n junctions in amorphous silicon semiconductors

    DOE Patents [OSTI]

    Madan, A.

    1984-12-10T23:59:59.000Z

    A method of preparing p/sup +/-i-n/sup +/ junctions for amorphous silicon semiconductors includes depositing amorphous silicon on a thin layer of trivalent material, such as aluminum, indium, or gallium at a temperature in the range of 200/sup 0/C to 250/sup 0/C. At this temperature, the layer of trivalent material diffuses into the amorphous silicon to form a graded p/sup +/-i junction. A layer of n-type doped material is then deposited onto the intrinsic amorphous silicon layer in a conventional manner to finish forming the p/sup +/-i-n/sup +/ junction.

  15. Reduced low frequency noise in electron beam evaporated MgO magnetic tunnel junctions

    SciTech Connect (OSTI)

    Diao, Z.; Feng, J. F.; Kurt, H.; Feng, G.; Coey, J. M. D. [CRANN and School of Physics, Trinity College, Dublin 2 (Ireland)

    2010-05-17T23:59:59.000Z

    We compare low frequency noise in magnetic tunnel junctions with MgO barriers prepared by electron-beam evaporation with those prepared by radiofrequency sputtering, both showing a high tunneling magnetoresistance. The normalized noise parameter in the parallel state of junctions with evaporated barriers is at least one order of magnitude lower than that in junctions with sputtered barriers, and exhibits a weaker bias dependence. The lowest normalized noise is in the 10{sup -11} mum{sup 2} range. A lower density of oxygen vacancies acting as charge trap states in the evaporated MgO is responsible for the lower noise.

  16. Performance of single-junction and dual-junction InGaP/GaAs solar cells under low concentration ratios

    SciTech Connect (OSTI)

    Khan, Aurangzeb; Yamaguchi, Masafumi; Takamoto, Tatsuya [Department of Electrical and Computer Engineering, University of South Alabama, Mobile, Alabama 36688 (United States); Toyota Technological Institute, 2-12-1 Hisakata, Tempaku, Nagoya 468-8511 (Japan); Sharp Corporation, 282-1 Hajikami, Shinjo, Nara 639-2198 (Japan)

    2004-10-11T23:59:59.000Z

    A study of the performance of single-junction InGaP/GaAs and dual-junction InGaP/GaAs tandem cells under low concentration ratios (up to 15 suns), before and after 1 MeV electron irradiation is presented. Analysis of the tunnel junction parameters under different concentrated light illuminations reveals that the peak current (J{sub P}) and valley current (J{sub V}) densities should be greater than the short-circuit current density (J{sub sc}) for better performance. The tunnel junction behavior against light intensity improved after irradiation. This led to the suggestion that the peak current density (J{sub P}) and valley current density (J{sub V}) of the tunnel junction were enhanced after irradiation or the peak current was shifted to higher concentration. The recovery of the radiation damage under concentrated light illumination conditions suggests that the performance of the InGaP/GaAs tandem solar cell can be enhanced even under low concentration ratios.

  17. Pattern of neutrino mixing in grand unified theories

    SciTech Connect (OSTI)

    Milton, K.; Tanaka, K.

    1981-01-01T23:59:59.000Z

    It was found previously in SO(10) grand unified theories that if the neutrinos have a Dirac mass and a right-handed Majorana mass (approx. 10/sup 15/GeV) but no left-handed Majorana mass, there is small ..nu../sub e/ mixing but ..nu../sub ..mu../ - ..nu../sub tau/ mixing can be substantial. This problem is reexamined on the basis of a formalism that assumes that the up, down, lepton, and neutrino mass matrices arise from a single complex 10 and a single 126 Higgs boson. This formalism determines the Majorana mass matrix in terms of quark mass matrices. Adopting three different sets of quark mass matrices that produce acceptable fermion mass ratios and Cabbibo mixing produces results consistent with the above; however, in the optimum case, ..nu../sub e/ - ..nu../sub ..mu../ mixing can be of the order of the Cabbibo angle.

  18. Reservoir characterization of the Ribeira Grande (Azores) field

    SciTech Connect (OSTI)

    Mete, L. (Aquater, Spa, Italy); Rivera-Rodriguez, J.

    1982-01-01T23:59:59.000Z

    A description is made of the geothermal system located at the Ribeira Grande area in San Miguel Island at Azores. To date, three deep wells have been drilled, two of them are considered to be productive and the other one, although capable of production, has been used as an observation well due to completion problems. One of the wells is presently connected to a 3 MW-portable power plant. A series of tests, including both production and well testing, have been conducted in order to provide a reservoir characterization of the system. Several injection falloff, two rate and multiple rate tests have been carried out, as well as a preliminary interference-type test. A description of results obtained is provided.

  19. 0.7-eV GaInAs Junction for a GaInP/GaAs/GaInAs(1eV)/GaInAs(0.7eV) Four-Junction Solar Cell

    SciTech Connect (OSTI)

    Friedman, D. J.; Geisz, J. F.; Norman, A. G.; Wanlass, M. W.; Kurtz, S. R.

    2006-01-01T23:59:59.000Z

    We discuss recent developments in III-V multijunction solar cells, focusing on adding a fourth junction to the Ga{sub 0.5}In{sub 0.5} P/GaAs/Ga{sub 0.75}In{sub 0.25}As inverted three-junction cell. This cell, grown inverted on GaAs so that the lattice-mismatched Ga{sub 0.75}In{sub 0.25}As third junction is the last one grown, has demonstrated 38% efficiency, and 40% is likely in the near future. To achieve still further gains, a lower-bandgap Ga{sub x}In{sub 1-x}As fourth junction could be added to the three-junction structure for a four-junction cell whose efficiency could exceed 45% under concentration. Here, we present the initial development of the Ga{sub x}In{sub 1-x}As fourth junction. Junctions of various bandgaps ranging from 0.88 to 0.73 eV were grown, in order to study the effect of the different amounts of lattice mismatch. At a bandgap of 0.88 eV, junctions were obtained with very encouraging {approx}80% quantum efficiency, 57% fill factor, and 0.36 eV open-circuit voltage. The device performance degrades with decreasing bandgap (i.e., increasing lattice mismatch). We model the four-junction device efficiency vs. fourth junction bandgap to show that an 0.7-eV fourth-junction bandgap, while optimal if it could be achieved in practice, is not necessary; an 0.9-eV bandgap would still permit significant gains in multijunction cell efficiency while being easier to achieve than the lower-bandgap junction.

  20. Spin-polarized tunneling in MgO-based tunnel junctions with superconducting electrodes

    E-Print Network [OSTI]

    Schebaum, Oliver

    We prepared magnetic tunnel junctions with one ferromagnetic and one superconducting AlSi electrode. Pure cobalt electrodes were compared with a CoFeB alloy and the Heusler compound Co[subscript 2]FeAl. The polarization ...

  1. Superconducting qubit without Josephson junctions manipulated by the orbital angular momentum of light

    E-Print Network [OSTI]

    Sang Jae Yun

    2015-05-28T23:59:59.000Z

    Conventional superconducting qubits have used Josephson junctions as an essential part to provide anharmonicity for well-separated energy-level spacings. However, because a superconducting ring without Josephson junctions has intrinsically well-separated energy-level spacings, Josephson junctions are not necessary as long as one can achieve single-qubit operations. We show that the orbital angular momentum (OAM) of light can be adopted as a qubit-control means and can eliminate the need for Josephson junctions. We provide theoretical analysis for the interaction between a superconducting ring and the OAM of light. The feasibility study reveals that the proposed qubit has many advantages over the previous ones. Moreover, because the qubits are controlled optically, no-circuit architecture would be possible if two-qubit gates were achieved by moving the rings.

  2. Motion of fluxons in distributed two-dimensional Josephson tunnel junctions

    SciTech Connect (OSTI)

    Nevirkovets, I.P.; Rudenko, E.M.

    1984-01-01T23:59:59.000Z

    A strong asymmetry is observed in the current--voltage characteristics of distributed two-dimensional Sn--I--Sn, Sn--I--Pb tunnel junctions with dimensions L>>lambda/sub J/ when an external magnetic field is applied in the plane of the junction perpendicular to the L dimension for different orientations of the field. A resistive section in the form of an almost vertical step appears in the IVC in one orientation of the field and is absent in the opposite orientation. It is shown that the appearance of the steps is related to the conditions of motion of Josephson vortices in tunnel junctions under the action of the Lorentz force in the presence of a current domain at the edge of the distributed junction.

  3. EFFECT OF PREPARATION PARAMETERS ON LIGHT SENSITIVITY IN SUPERCONDUCTIVE TUNNEL JUNCTIONS

    E-Print Network [OSTI]

    Paris-Sud XI, Universit de

    , Italy Rsum. 2014 Des jonctions tunnel supraconductrices utilisant du sulfure de cadmium et du al. [17] have considered semiconductor barriers for low capacitance tunnel junctions. Light can be depo- sited in ultra high vacuum systems without fear of contamination. Work

  4. A market analysis for high efficiency multi-junction solar cells grown on SiGe

    E-Print Network [OSTI]

    Judkins, Zachara Steele

    2007-01-01T23:59:59.000Z

    Applications, markets and a cost model are presented for III-V multi-junction solar cells built on compositionally graded SiGe buffer layers currently being developed by professors Steven Ringell of Ohio State University ...

  5. Gap junction intercellular communication: a microinjection investigation of fibroblast and epithelial cell lines

    E-Print Network [OSTI]

    Pahlka, Raymond Benton

    2002-01-01T23:59:59.000Z

    parameters as well as optimal cell conditions for effective, repeatable studies using the microinjection protocol. The second objective was to determine whether or not the AG1522 cell line exhibited gap junction intercellular communication (GJIC) through...

  6. Back to the crossroads of Flatbush--the junction--student housing for Brooklyn College

    E-Print Network [OSTI]

    Campbell, Keith A. (Keith Anthony)

    1988-01-01T23:59:59.000Z

    The crossroads of Flatbush (often called The Junction) is a five point intersection of vehicular and pedestrian traffic. A crossroad where ethnic groups step beyond subtle neighborhood boundaries and merge to use public ...

  7. Device characterization for design optimization of 4 junction inverted metamorphic concentrator solar cells

    SciTech Connect (OSTI)

    Geisz, John F.; France, Ryan M.; Steiner, Myles A.; Friedman, Daniel J. [National Renewable Energy Laboratory, Golden, CO 80401 (United States); Garca, Ivn [National Renewable Energy Laboratory, Golden, CO 80401 USA and Instituto de Energa Solar, Universidad Politcnica de Madrid, Avda Complutense s/n, 28040 Madrid (Spain)

    2014-09-26T23:59:59.000Z

    Quantitative electroluminescence (EL) and luminescent coupling (LC) analysis, along with more conventional characterization techniques, are combined to completely characterize the subcell JV curves within a fourjunction (4J) inverted metamorphic solar cell (IMM). The 4J performance under arbitrary spectral conditions can be predicted from these subcell JV curves. The internal radiative efficiency (IRE) of each junction has been determined as a function of current density from the external radiative efficiency using optical modeling, but this required the accurate determination of the individual junction current densities during the EL measurement as affected by LC. These measurement and analysis techniques can be applied to any multijunction solar cell. The 4J IMM solar cell used to illustrate these techniques showed excellent junction quality as exhibited by high IRE and a one-sun AM1.5D efficiency of 36.3%. This device operates up to 1000 suns without limitations due to any of the three tunnel junctions.

  8. Thermally activated switching in spin-flop tunnel junctions V. Korenivskia

    E-Print Network [OSTI]

    Haviland, David

    -closed multilayers, consisting of two ferromagnetic layers separated by a thin nonmagnetic spacer, have been proposed of similar lateral dimensions. Spin-flop junctions with writing circuits have been fab- ricated by methods

  9. Grain boundary and triple junction constraints during martensitic transformation in shape memory alloys

    E-Print Network [OSTI]

    Ueland, Stian Melhus

    We investigate the role of grain constraint upon martensitic transformation through in situ scanning electron microscope tensile experiments on shape memory microwires with a small number of grains and grain junctions. The ...

  10. J. Field Ornithol. 76(1):1220, 2005 Survival of Rio Grande Wild Turkey chicks

    E-Print Network [OSTI]

    Wallace, Mark C.

    12 J. Field Ornithol. 76(1):12­20, 2005 Survival of Rio Grande Wild Turkey chicks Brian L. Spears,1 determined pre-flight daily survival of Rio Grande Wild Turkey (Meleagris gallopavo intermedia) chicks from, survival, telemetry, turkey Increasing population recruitment through reproductive success is often key

  11. EIS-0485: Interconnection of the Grande Prairie Wind Farm, Holt County, Nebraska

    Broader source: Energy.gov [DOE]

    DOEs Western Area Power Administration is preparing an EIS to evaluate the environmental impacts of interconnecting the proposed Grande Prairie Wind Farm, in Holt County, near ONeill, Nebraska, to Westerns power transmission system. The project website is http://www.wapa.gov/ugp/Environment/GrandePrairie.htm.

  12. Efficient Irrigation for Water Conservation in the Rio Grande Basin: 2010/2011 Progress and Accomplishments

    E-Print Network [OSTI]

    Kalisek, D.; Harris, B. L.; Runyan, C.; DeMouche, L.

    2011-01-01T23:59:59.000Z

    Since 2001, the Efficient Irrigation for Water Conservation in the Rio Grande Basin Federal Initiative-known as the Rio Grande Basin Initiative (RGBI)-has saved more than 5 million acre-feet of water. Researchers, Extension specialists, and county...

  13. Institutional Adjustments for Coping with Prolonged and Severe Drought in the Rio Grande Basin

    E-Print Network [OSTI]

    Ward, Frank A.; Young, Robert; Lacewell, Ronald D.; King, J. Philip; Frasier, Marshall; McGuckin, J. Thomas; DuMars, Charles R.; Booker, James; Ellis, John; Srinivasan, Raghavan

    and industrial needs of cities like Albuquerque and El Paso, the Rio Grande represents a significant resource in the arid southwest. In 1938, Congress approved the Rio Grande Compact which divided the annual water flow among the three states of Colorado, New...

  14. Research and management of soil, plant, animal, and human resources in the Middle Rio Grande Basin

    E-Print Network [OSTI]

    Research and management of soil, plant, animal, and human resources in the Middle Rio Grande Basin in 1994 called. "Ecology, diversity, and sustainability of soil, plant, animal, and human resources, Diversity, and Sustainability of Soil, Plant, Animal, and Human resources of the Rio Grande Basin" (Finch

  15. Transverse-modal behavior of a transverse junction stripe laser excited by a short electrical pulse

    SciTech Connect (OSTI)

    Lau, K.Y.; Yariv, A.

    1981-02-01T23:59:59.000Z

    The transverse-modal behavior of a lateral injection gain-guided laser (the transverse junction strip (TJS) laser) excited by a short (70 ps) electrical pulse is investigated experimentally and theoretically. It is predicted theoretically and observed experimentally that the transverse mode strongly depends on the excitation pulse amplitude and the dc bias current (which is set below threshold). This dependence is found to be due to transient lateral carrier diffusion at the lasing junction.

  16. Single-junction solar cells with the optimum band gap for terrestrial concentrator applications

    DOE Patents [OSTI]

    Wanlass, Mark W. (Golden, CO)

    1994-01-01T23:59:59.000Z

    A single-junction solar cell having the ideal band gap for terrestrial concentrator applications. Computer modeling studies of single-junction solar cells have shown that the presence of absorption bands in the direct spectrum has the effect of "pinning" the optimum band gap for a wide range of operating conditions at a value of 1.14.+-.0.02 eV. Efficiencies exceeding 30% may be possible at high concentration ratios for devices with the ideal band gap.

  17. High temperature superconductor step-edge Josephson junctions using Ti-Ca-Ba-Cu-O

    DOE Patents [OSTI]

    Ginley, D.S.; Hietala, V.M.; Hohenwarter, G.K.G.; Martens, J.S.; Plut, T.A.; Tigges, C.P.; Vawter, G.A.; Zipperian, T.E.

    1994-10-25T23:59:59.000Z

    A process is disclosed for formulating non-hysteretic and hysteretic Josephson junctions using HTS materials which results in junctions having the ability to operate at high temperatures while maintaining high uniformity and quality. The non-hysteretic Josephson junction is formed by step-etching a LaAlO[sub 3] crystal substrate and then depositing a thin film of TlCaBaCuO on the substrate, covering the step, and forming a grain boundary at the step and a subsequent Josephson junction. Once the non-hysteretic junction is formed the next step to form the hysteretic Josephson junction is to add capacitance to the system. In the current embodiment, this is accomplished by adding a thin dielectric layer, LaA1O[sub 3], followed by a cap layer of a normal metal where the cap layer is formed by first depositing a thin layer of titanium (Ti) followed by a layer of gold (Au). The dielectric layer and the normal metal cap are patterned to the desired geometry. 8 figs.

  18. Computational Fluid Dynamics Analysis of Flexible Duct Junction Box Design

    SciTech Connect (OSTI)

    Beach, R.; Prahl, D.; Lange, R.

    2013-12-01T23:59:59.000Z

    IBACOS explored the relationships between pressure and physical configurations of flexible duct junction boxes by using computational fluid dynamics (CFD) simulations to predict individual box parameters and total system pressure, thereby ensuring improved HVAC performance. Current Air Conditioning Contractors of America (ACCA) guidance (Group 11, Appendix 3, ACCA Manual D, Rutkowski 2009) allows for unconstrained variation in the number of takeoffs, box sizes, and takeoff locations. The only variables currently used in selecting an equivalent length (EL) are velocity of air in the duct and friction rate, given the first takeoff is located at least twice its diameter away from the inlet. This condition does not account for other factors impacting pressure loss across these types of fittings. For each simulation, the IBACOS team converted pressure loss within a box to an EL to compare variation in ACCA Manual D guidance to the simulated variation. IBACOS chose cases to represent flows reasonably correlating to flows typically encountered in the field and analyzed differences in total pressure due to increases in number and location of takeoffs, box dimensions, and velocity of air, and whether an entrance fitting is included. The team also calculated additional balancing losses for all cases due to discrepancies between intended outlet flows and natural flow splits created by the fitting. In certain asymmetrical cases, the balancing losses were significantly higher than symmetrical cases where the natural splits were close to the targets. Thus, IBACOS has shown additional design constraints that can ensure better system performance.

  19. Spin Josephson effect in topological superconductor-ferromagnet junction

    SciTech Connect (OSTI)

    Ren, C. D.; Wang, J., E-mail: jwang@seu.edu.cn [Department of Physics, Southeast University, Nanjing 210096 (China)

    2014-03-21T23:59:59.000Z

    The composite topological superconductor (TS), made of one-dimensional spin-orbit coupled nanowire with proximity-induced s-wave superconductivity, is not a pure p-wave superconductor but still has a suppressed s-wave pairing. We propose to probe the spin texture of the p-wave pairing in this composite TS by examining possible spin supercurrents in an unbiased TS/ferromagnet junction. It is found that both the exchange-coupling induced and spin-flip reflection induced spin currents exist in the setup and survive even in the topological phase. We showed that besides the nontrivial p-wave pairing state accounting for Majorana Fermions, there shall be a trivial p-wave pairing state that contributes to spin supercurrent. The trivial p-wave pairing state is diagnosed from the mixing effect between the suppressed s-wave pairing and the topologically nontrivial p-wave pairing. The d vector of the TS is proved not to be rigorously perpendicular to the spin projection of p-wave pairings. Our findings are also confirmed by the Kitaev's p-wave model with a nonzero s-wave pairing.

  20. Quantum interference in thermoelectric molecular junctions: A toy model perspective

    SciTech Connect (OSTI)

    Nozaki, Daijiro, E-mail: daijiro.nozaki@gmail.com, E-mail: research@nano.tu-dresden.de [Institute for Materials Science and Max Bergmann Center of Biomaterials, TU Dresden, 01062 Dresden (Germany); Avdoshenko, Stas M. [Department of Chemistry and Institute for Computational Engineering and Sciences, University of Texas at Austin, 100 E. 24th St. A1590, Austin, Texas 78712 (United States); Sevinli, Hldun [Department of Materials Science and Engineering, Izmir Institute of Technology, Gulbahce Kampusu 35430 Urla, Izmir (Turkey); Cuniberti, Gianaurelio [Institute for Materials Science and Max Bergmann Center of Biomaterials, TU Dresden, 01062 Dresden (Germany); Dresden Center for Computational Materials Science (DCCMS), TU Dresden, 01062 Dresden (Germany); Center for Advancing Electronics Dresden (cfAED), TU Dresden, 01062 Dresden (Germany)

    2014-08-21T23:59:59.000Z

    Quantum interference (QI) phenomena between electronic states in molecular circuits offer a new opportunity to design new types of molecular devices such as molecular sensors, interferometers, and thermoelectric devices. Controlling the QI effect is a key challenge for such applications. For the development of single molecular devices employing QI effects, a systematic study of the relationship between electronic structure and the quantum interference is needed. In order to uncover the essential topological requirements for the appearance of QI effects and the relationship between the QI-affected line shape of the transmission spectra and the electronic structures, we consider a homogeneous toy model where all on-site energies are identical and model four types of molecular junctions due to their topological connectivities. We systematically analyze their transmission spectra, density of states, and thermoelectric properties. Even without the degree of freedom for on-site energies an asymmetric Fano peak could be realized in the homogeneous systems with the cyclic configuration. We also calculate the thermoelectric properties of the model systems with and without fluctuation of on-site energies. Even under the fluctuation of the on-site energies, the finite thermoelectrics are preserved for the Fano resonance, thus cyclic configuration is promising for thermoelectric applications. This result also suggests the possibility to detect the cyclic configuration in the homogeneous systems and the presence of the QI features from thermoelectric measurements.

  1. Investigation of redox processes at semiconductor electrode liquid junctions

    SciTech Connect (OSTI)

    Koval, C.A.

    1990-08-01T23:59:59.000Z

    Research in fundamental aspects of photoelectrochemical cells has been in the following areas: chemical probes for hot carrier processes, electrostatic theory for describing electrical interactions at interfaces, and kinetics of electron transfer at ideal semiconductor solution interfaces. Our goal is to achieve a better understanding of dark and photo-induced current flow at the semiconductor electrode/redox electrolyte interface (SEI) so that devices and processes utilizing this interface for solar energy conversion can be developed or improved. Our most important accomplishment has been the development of a redox system capable of detecting hot electrons at the p-InP/acetonitrile interface. Also, we have examined electrostatic theory for the image potential of an ion as a function of distance from the SEI. Finally, our group was one of the first to realize that the 2-dimensional metal chalcogenides (MC) are excellent materials for fundamental studies of electron transfer at the SEI. One of the chief potential advantages for use of MC's is the formation of semiconductor/liquid junctions with nearly ideal electrochemical properties. 27 refs., 1 fig.

  2. Grand challenge problems in environmental modeling and remediation: Groundwater contaminant transport. Final project report 1998

    SciTech Connect (OSTI)

    NONE

    1998-04-01T23:59:59.000Z

    The over-reaching goal of the Groundwater Grand Challenge component of the Partnership in Computational Science (PICS) was to develop and establish the massively parallel approach for the description of groundwater flow and transport and to address the problem of uncertainties in the data and its interpretation. This necessitated the development of innovative algorithms and the implementation of massively parallel computational tools to provide a suite of simulators for groundwater flow and transport in heterogeneous media. This report summarizes the activities and deliverables of the Groundwater Grand Challenge project funded through the High Performance Computing grand challenge program of the Department of Energy from 1995 through 1997.

  3. Transition voltages of vacuum-spaced and molecular junctions with Ag and Pt electrodes

    SciTech Connect (OSTI)

    Wu, Kunlin; Bai, Meilin; Hou, Shimin, E-mail: smhou@pku.edu.cn [Key Laboratory for the Physics and Chemistry of Nanodevices, Department of Electronics, Peking University, Beijing 100871 (China); Sanvito, Stefano [School of Physics, AMBER and CRANN Institute, Trinity College, Dublin 2 (Ireland)

    2014-07-07T23:59:59.000Z

    The transition voltage of vacuum-spaced and molecular junctions constructed with Ag and Pt electrodes is investigated by non-equilibrium Green's function formalism combined with density functional theory. Our calculations show that, similarly to the case of Au-vacuum-Au previously studied, the transition voltages of Ag and Pt metal-vacuum-metal junctions with atomic protrusions on the electrode surface are determined by the local density of states of the p-type atomic orbitals of the protrusion. Since the energy position of the Pt 6p atomic orbitals is higher than that of the 5p/6p of Ag and Au, the transition voltage of Pt-vacuum-Pt junctions is larger than that of both Ag-vacuum-Ag and Au-vacuum-Au junctions. When one moves to analyzing asymmetric molecular junctions constructed with biphenyl thiol as central molecule, then the transition voltage is found to depend on the specific bonding site for the sulfur atom in the thiol group. In particular agreement with experiments, where the largest transition voltage is found for Ag and the smallest for Pt, is obtained when one assumes S binding at the hollow-bridge site on the Ag/Au(111) surface and at the adatom site on the Pt(111) one. This demonstrates the critical role played by the linker-electrode binding geometry in determining the transition voltage of devices made of conjugated thiol molecules.

  4. Interacting Topological Insulator and Emergent Grand Unified Theory

    E-Print Network [OSTI]

    Yi-Zhuang You; Cenke Xu

    2015-03-23T23:59:59.000Z

    Motivated by the Pati-Salam Grand Unified Theory, we study $(4+1)d$ topological insulators with $SU(4) \\times SU(2)_1 \\times SU(2)_2$ symmetry, whose $(3+1)d$ boundary has 16 flavors of left-chiral fermions, which form representations $(\\mathbf{4}, \\mathbf{2}, \\mathbf{1})$ and $(\\bar{\\mathbf{4}}, \\mathbf{1}, \\mathbf{2})$. The key result we obtain is that, without any interaction, this topological insulator has a $\\mathbb{Z}$ classification, namely any quadratic fermion mass operator at the $(3+1)d $ boundary is prohibited by the symmetries listed above; while under interaction this system becomes trivial, namely its $(3+1)d$ boundary can be gapped out by a properly designed short range interaction without generating nonzero vacuum expectation value of any fermion bilinear mass, or in other words, its $(3+1)d$ boundary can be driven into a "strongly coupled symmetric gapped (SCSG) phase". Based on this observation, we propose that after coupling the system to a dynamical $SU(4) \\times SU(2)_1 \\times SU(2)_2$ lattice gauge field, the Pati-Salam GUT can be fully regularized as the boundary states of a $(4+1)d$ topological insulator with a {\\it thin} fourth spatial dimension, the thin fourth dimension makes the entire system generically a $(3+1)d$ system. The mirror sector on the opposite boundary will {\\it not} interfere with the desired GUT, because the mirror sector is driven to the SCSG phase by a carefully designed interaction and is hence decoupled from the GUT.

  5. High performance computing and communications grand challenges program

    SciTech Connect (OSTI)

    Solomon, J.E.; Barr, A.; Chandy, K.M.; Goddard, W.A., III; Kesselman, C.

    1994-10-01T23:59:59.000Z

    The so-called protein folding problem has numerous aspects, however it is principally concerned with the {ital de novo} prediction of three-dimensional (3D) structure from the protein primary amino acid sequence, and with the kinetics of the protein folding process. Our current project focuses on the 3D structure prediction problem which has proved to be an elusive goal of molecular biology and biochemistry. The number of local energy minima is exponential in the number of amino acids in the protein. All current methods of 3D structure prediction attempt to alleviate this problem by imposing various constraints that effectively limit the volume of conformational space which must be searched. Our Grand Challenge project consists of two elements: (1) a hierarchical methodology for 3D protein structure prediction; and (2) development of a parallel computing environment, the Protein Folding Workbench, for carrying out a variety of protein structure prediction/modeling computations. During the first three years of this project, we are focusing on the use of two proteins selected from the Brookhaven Protein Data Base (PDB) of known structure to provide validation of our prediction algorithms and their software implementation, both serial and parallel. Both proteins, protein L from {ital peptostreptococcus magnus}, and {ital streptococcal} protein G, are known to bind to IgG, and both have an {alpha} {plus} {beta} sandwich conformation. Although both proteins bind to IgG, they do so at different sites on the immunoglobin and it is of considerable biological interest to understand structurally why this is so. 12 refs., 1 fig.

  6. The systemic and ideological sources of grand strategic doctrine : American foreign policy in the twentieth century

    E-Print Network [OSTI]

    Green, Brendan Rittenhouse

    2011-01-01T23:59:59.000Z

    What explains the puzzling variation in America's foreign policy posture? This study proposes and tests a theory of American grand strategy that places an emphasis on two key variables: the ideological content of American ...

  7. A Study of Institutional Factors Affecting Water Resource Development in the Lower Rio Grande Valley, Texas

    E-Print Network [OSTI]

    Trock, W. L.; Casbeer, T. J.

    1969-01-01T23:59:59.000Z

    Despite numerous studies of and plans for the use of land and water resources of the lower Rio Grande Valley for efficient agricultural production, development has lagged and the production potential has not been realized. ...

  8. Evaluation of Canal Lining Projects in the Lower Rio Grande Valley

    E-Print Network [OSTI]

    Karimov, Askar; Leigh, Eric; Fipps, Guy

    Since 1999, seven (7) irrigation districts in the Lower Rio Grande Valley of Texas have installed six (6) different types of synthetic canal lining materials, totaling approximately 21 miles. In 2005, we began a program to track the long...

  9. Adsorption characteristics of alkanes onto carbon nanotube bundles: Grand Canonical Monte Carlo simulation

    E-Print Network [OSTI]

    Maruyama, Shigeo

    Adsorption characteristics of alkanes onto carbon nanotube bundles: Grand Canonical Monte Carlo alkane adsorption and separation. Rather than remaining isolated however, nanotubes tend to bundle together, and the adsorption properties of such bundles and subsequent potential for practical alkane

  10. Influences of vegetation characteristics and invertebrate abundance of Rio Grande wild turkey populations, Edwards Plateau, Texas

    E-Print Network [OSTI]

    Randel, Charles Jack

    2005-02-17T23:59:59.000Z

    Since 1970, Rio Grande wild turkey (Meleagris gallapavo intermedia) numbers in the southern region of the Edwards Plateau of Texas have been declining. Nest-site characteristics and invertebrate abundance were hypothesized as limiting wild turkey...

  11. Views from the River Front: Rio Grande Decision Makers Rank Water Conservation Strategies

    E-Print Network [OSTI]

    Silvy, Valeen; Lesikar, Bruce J.

    2005-10-18T23:59:59.000Z

    This publication details the results of a survey of elected city officials and water managers in the Rio Grande River Basin of Texas and New Mexico. The participants ranked water conservation strategies for their communities....

  12. Media Invitation: 2014 SunShot Grand Challenge Summit and Peer...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    the media are invited to attend the U.S. Department of Energy (DOE) SunShot Initiative's 2014 Grand Challenge Summit and Peer Review in Anaheim, California from May 19-22, 2014....

  13. Self-consistent thermodynamics for the Tsallis statistics in the grand canonical ensemble: Nonrelativistic hadron gas

    E-Print Network [OSTI]

    Parvan, A S

    2015-01-01T23:59:59.000Z

    In the present paper, the Tsallis statistics in the grand canonical ensemble was reconsidered in a general form. The thermodynamic properties of the nonrelativistic ideal gas of hadrons in the grand canonical ensemble was studied numerically and analytically in a finite volume and the thermodynamic limit. It was proved that the Tsallis statistics in the grand canonical ensemble satisfies the requirements of the equilibrium thermodynamics in the thermodynamic limit if the thermodynamic potential is a homogeneous function of the first order with respect to the extensive variables of state of the system and the entropic variable $z=1/(q-1)$ is an extensive variable of state. The equivalence of canonical, microcanonical and grand canonical ensembles for the nonrelativistic ideal gas of hadrons was demonstrated.

  14. Economic Essays on Water Resources Management of the Texas Lower Rio Grande Valley

    E-Print Network [OSTI]

    Leidner, Andrew

    2012-07-16T23:59:59.000Z

    The study area for this dissertation is the Texas Lower Rio Grande Valley (Valley). The overarching theme is water and includes regional water management, water management institutions, and water supply decision-making as it relates to community...

  15. The SO2 Allowance Trading System: The Ironic History of a Grand Policy Experiment

    E-Print Network [OSTI]

    Schmalensee, Richard

    Two decades have passed Two decades have passed since the Clean Air Act Amendments of 1990 launched a grand experiment in market-based environmental policy: the SO2 cap-and-trade system. That system performed well but ...

  16. Building a Grand Paris: French Neoliberalism and the Politics of Urban Spatial Production

    E-Print Network [OSTI]

    Enright, Theresa Erin

    2012-01-01T23:59:59.000Z

    de la dcentralisation. Paris: LHarmattan, 2009. Williams,Jobert, 2186. Paris: LHarmattan, 1994. Jordan, David P.by Bruno Jobert (Paris: LHarmattan, 1994). Blanc, Le Grand

  17. Changing Military Dynamics in East Asia:Australias Evolving Grand Strategy

    E-Print Network [OSTI]

    SHEARER, Andrew

    2012-01-01T23:59:59.000Z

    White, Hugh. 2010. Power Shift: Australias Future Betweenand military power closer to Australia, position- ingAs power shifts in the Asia-Pacific, Australias grand

  18. Microsoft Word - CX-GrandCoulee-OkanoganWP-AR-Landing_WEB.doc

    Broader source: Energy.gov (indexed) [DOE]

    REPLY TO ATTN OF: KEPR-Bell-1 SUBJECT: Environmental Cleareance Memorandum Jim Semrau Robert Keudell Road Engineer - TELF-TPP-3 Line Foreman III - TFWK-Grand Coulee Todd Wehner...

  19. Microsoft Word - CX-GrandCoulee-ChiefJoseph_ARandWood Poles_WEB...

    Broader source: Energy.gov (indexed) [DOE]

    REPLY TO ATTN OF: KEPR-Bell-1 SUBJECT: Environmental Cleareance Memorandum Todd Wehner Road Engineer - TELF-TPP-3 Robert Keudell Line Foreman III - TFWK-Grand Coulee Robert Zellar...

  20. Greenhouse space allocation in the ornamental foliage industry in the Rio Grande Valley of Texas

    E-Print Network [OSTI]

    Krafka, Brenda Dea Lang

    1986-01-01T23:59:59.000Z

    GREENHOUSE SPACE ALLOCATION IN THE ORNAMENTAL FOLIAGE INDUSTRY IN THE RIO GRANDE VALLEY OF TEXAS A Thesis by BRENDA DEA LANG KRAFKA Submitted to the Graduate College of Texas AAM University in partial fulfillment of the requirements... for the degree of MASTER OF SCIENCE August 1986 Major Subject: Agricultural Economics GREENHOUSE SPACE ALLOCATION IN THE ORNAMENTAL FOLIAGE INDUSTRY IN THE RIO GRANDE VALLEY OF TEXAS A Thesis by BRENDA DEA LANG KRAFKA Approved as to style and content by...

  1. Nesting ecology of Rio Grande wild turkeys in the Edwards Plateau of Texas

    E-Print Network [OSTI]

    Dreibelbis, Justin Zachary

    2009-05-15T23:59:59.000Z

    NESTING ECOLOGY OF RIO GRANDE WILD TURKEYS IN THE EDWARDS PLATEAU OF TEXAS A Thesis by JUSTIN ZACHARY DREIBELBIS Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment of the requirements... for the degree of MASTER OF SCIENCE August 2008 Major Subject: Wildlife and Fisheries Sciences NESTING ECOLOGY OF RIO GRANDE WILD TURKEYS IN THE EDWARDS PLATEAU OF TEXAS A Thesis by JUSTIN ZACHARY DREIBELBIS Submitted to the Office...

  2. The ending of an era: After more than 10 years, the Rio Grande Basin Initiative concludes

    E-Print Network [OSTI]

    Kalisek, Danielle

    2013-01-01T23:59:59.000Z

    available for the people of the basin, Lacewell said. In addition, desalination use in South Texas has grown and become competitive with municipal water production. Project sponsor NIFA o#17;en uses data produced through RGBI because it is broad..., the Rio Grande Basin Initiative concludes Summer 2013 tx H2O 9 Scientists with the Rio Grande Basin Initiative used aquatic weed control methods and herbicides to control invasive water plants such as water hyacinth, pictured. Photo by Danielle...

  3. International cooperation between the United States and Mexico: addressing water quality of the Lower Rio Grande

    E-Print Network [OSTI]

    Crouch, Kellie Gene

    1997-01-01T23:59:59.000Z

    Geography. Conclusions. Recommendations. Summary ERATURE CITED 53 56 58 71 75 76 77 79 91 95 97 101 LIST OF FIGURES FIGURE Page The Rio Grande Basin. Interrelationships between social and natural factors. . . . . Continuum of interaction... in 1994. . . . Distribution of Hepatitis-A for Texas counties in 1995. . . . 46 47 Interrelationships between social and natural factors in the Lower Rio Grande border region. . . . . . . . . . . . . . . . . . . . . . . . . , . . . . . . 73 LIST...

  4. Nonequilibrium transport through quantum-wire junctions and boundary defects for free massless bosonic fields

    E-Print Network [OSTI]

    Gaw?dzki, Krzysztof

    2015-01-01T23:59:59.000Z

    We consider a model of quantum-wire junctions where the latter are described by conformal-invariant boundary conditions of the simplest type in the multicomponent compactified massless scalar free field theory representing the bosonized Luttinger liquids in the bulk of wires. The boundary conditions result in the scattering of charges across the junction with nontrivial reflection and transmission amplitudes. The equilibrium state of such a system, corresponding to inverse temperature $\\beta$ and electric potential $V$, is explicitly constructed both for finite and for semi-infinite wires. In the latter case, a stationary nonequilibrium state describing the wires kept at different temperatures and potentials may be also constructed. The main result of the present paper is the calculation of the full counting statistics (FCS) of the charge and energy transfers through the junction in a nonequilibrium situation. Explicit expressions are worked out for the generating function of FCS and its large-deviations asym...

  5. Delocalised oxygen as the origin of two-level defects in Josephson junctions

    E-Print Network [OSTI]

    Timothy C. DuBois; Manolo C. Per; Salvy P. Russo; Jared H. Cole

    2012-12-07T23:59:59.000Z

    One of the key problems facing superconducting qubits and other Josephson junction devices is the decohering effects of bi-stable material defects. Although a variety of phenomenological models exist, the true microscopic origin of these defects remains elusive. For the first time we show that these defects may arise from delocalisation of the atomic position of the oxygen in the oxide forming the Josephson junction barrier. Using a microscopic model, we compute experimentally observable parameters for phase qubits. Such defects are charge neutral but have non-zero response to both applied electric field and strain. This may explain the observed long coherence time of two-level defects in the presence of charge noise, while still coupling to the junction electric field and substrate phonons.

  6. Formation of Porous Layers by Electrochemical Etching of Germanium and Gallium Arsenide for Cleave Engineered Layer Transfer (CELT) Application in High Efficiency Multi-Junction Solar Cells

    E-Print Network [OSTI]

    Fong, David Michael

    2012-01-01T23:59:59.000Z

    III! V Multijunction Solar Cells, (2003). J. F. Geisz, etEfficiency Multi-Junction Solar Cells A thesis submitted inEfficiency Multi-Junction Solar Cells By David Michael Fong

  7. arXiv:cond-mat/0301467v219Mar2003 Quantum effects in small-capacitance single Josephson junctions

    E-Print Network [OSTI]

    Haviland, David

    is that the effective impedance of an array can be varied in situ by applying an external magnetic field perpen- dicular measured the current-voltage (I-V ) characteristics of small-capacitance single Josephson junctions at low devices (SQUIDs). The single-junction I-V curve is sensitive to the impedance of the environment, which

  8. FILM ADHESION IN TRIPLE JUNCTION a-Si SOLAR CELLS ON POLYIMIDE and X. Deng1,2

    E-Print Network [OSTI]

    Deng, Xunming

    FILM ADHESION IN TRIPLE JUNCTION a-Si SOLAR CELLS ON POLYIMIDE SUBSTRATES A. Vijh1,2 , X. Yang1 , W encountered during fabrication of triple junction a-Si solar cells on polyimide substrates is the adhesion silicon solar cells made on different polyimide substrates (Kapton VN, Upilex-S and Gouldflex

  9. MODELING OF TRIPLE JUNCTION A-SI SOLAR CELLS USING ASA: ANALYSIS OF DEVICE PERFORMANCE UNDER VARIOUS FAILURE SCENARIOS

    E-Print Network [OSTI]

    Deng, Xunming

    have experienced a significant increase in the recent years. Solar panels with triple- junction found. To assist the optimization of solar cell fabrication and cost-effective industrial photovoltaicMODELING OF TRIPLE JUNCTION A-SI SOLAR CELLS USING ASA: ANALYSIS OF DEVICE PERFORMANCE UNDER

  10. Measurements and Predictions of the Heat Transfer at the Tube-Fin Junction for Louvered Fin Heat Exchangers

    E-Print Network [OSTI]

    Thole, Karen A.

    Measurements and Predictions of the Heat Transfer at the Tube-Fin Junction for Louvered Fin Heat Transfer at the Tube-Fin Junction for Louvered Fin Heat Exchangers Abstract The dominant thermal resistance used to increase heat transfer by initiating new boundary layer growth and increasing surface area

  11. Effect of Front-Side Silver Metallization on Underlying n+-p Junction in Multicrystalline Silicon Solar Cells: Preprint

    SciTech Connect (OSTI)

    Jiang, C. S.; Li, Z. G.; Moutinho, H. R.; Liang, L.; Ionkin, A.; Al-Jassim, M. M.

    2012-06-01T23:59:59.000Z

    We report on the effect of front-side Ag metallization on the underlying n+-p junction of multicrystalline Si solar cells. The junction quality beneath the contacts was investigated by characterizing the uniformities of the electrostatic potential and doping concentration across the junction, using scanning Kelvin probe force microscopy and scanning capacitance microscopy. We investigated cells with a commercial Ag paste (DuPont PV159) and fired at furnace setting temperatures of 800 degrees, 840 degrees, and 930 degrees C, which results in actual cell temperatures ~100 degrees C lower than the setting temperature and the three cells being under-, optimal-, and over-fired. We found that the uniformity of the junction beneath the Ag contact was significantly degraded by the over-firing, whereas the junction retained good uniformity with the optimal- and under-fire temperatures. Further, Ag crystallites with widely distributed sizes from <100 nm to several ?m were found at the Ag/Si interface of the over-fired cell. Large crystallites were imaged as protrusions into Si deeper than the junction depth. However, the junction was not broken down; instead, it was reformed on the entire front of the crystallite/Si interface. We propose a mechanism of the junction-quality degradation, based on emitter Si melting at the temperature around the Ag-Si eutectic point during firing, and subsequent recrystallization with incorporation of impurities in the Ag paste and with formation of crystallographic defects during quenching.

  12. HIGH-EFFICIENCY BACK-JUNCTION SILICON SOLAR CELL WITH AN IN-LINE EVAPORATED ALUMINUM FRONT GRID

    E-Print Network [OSTI]

    HIGH-EFFICIENCY BACK-JUNCTION SILICON SOLAR CELL WITH AN IN-LINE EVAPORATED ALUMINUM FRONT GRID M-diffused back-junction emitter. The aluminum front side grid is evaporated in an industrial-type in-thick silicon shadow masks for the in-line evaporation of the aluminum front grid. The masks are fabricated

  13. Monolithic interconnected module with a tunnel junction for enhanced electrical and optical performance

    DOE Patents [OSTI]

    Murray, Christopher S. (Bethel Park, PA); Wilt, David M. (Bay Village, OH)

    2000-01-01T23:59:59.000Z

    An improved thermophotovoltaic (TPV) n/p/n device is provided. Monolithic Interconnected Modules (MIMS), semiconductor devices converting infrared radiation to electricity, have been developed with improved electrical and optical performance. The structure is an n-type emitter on a p-type base with an n-type lateral conduction layer. The incorporation of a tunnel junction and the reduction in the amount of p-type material used results in negligible parasitic absorption, decreased series resistance, increased voltage and increased active area. The novel use of a tunnel junction results in the potential for a TPV device with efficiency greater than 24%.

  14. Single-junction solar cells with the optimum band gap for terrestrial concentrator applications

    DOE Patents [OSTI]

    Wanlass, M.W.

    1994-12-27T23:59:59.000Z

    A single-junction solar cell is described having the ideal band gap for terrestrial concentrator applications. Computer modeling studies of single-junction solar cells have shown that the presence of absorption bands in the direct spectrum has the effect of ''pinning'' the optimum band gap for a wide range of operating conditions at a value of 1.14[+-]0.02 eV. Efficiencies exceeding 30% may be possible at high concentration ratios for devices with the ideal band gap. 7 figures.

  15. Semiconductor device PN junction fabrication using optical processing of amorphous semiconductor material

    DOE Patents [OSTI]

    Sopori, Bhushan; Rangappan, Anikara

    2014-11-25T23:59:59.000Z

    Systems and methods for semiconductor device PN junction fabrication are provided. In one embodiment, a method for fabricating an electrical device having a P-N junction comprises: depositing a layer of amorphous semiconductor material onto a crystalline semiconductor base, wherein the crystalline semiconductor base comprises a crystalline phase of a same semiconductor as the amorphous layer; and growing the layer of amorphous semiconductor material into a layer of crystalline semiconductor material that is epitaxially matched to the lattice structure of the crystalline semiconductor base by applying an optical energy that penetrates at least the amorphous semiconductor material.

  16. Hetero-junctions of Boron Nitride and Carbon Nanotubes: Synthesis and Characterization

    SciTech Connect (OSTI)

    Yap, Yoke Khin

    2013-03-14T23:59:59.000Z

    Hetero-junctions of boron nitride nanotubes (BNNTs) and carbon nanotubes (CNTs) are expected to have appealing new properties that are not available from pure BNNTs and CNTs. Theoretical studies indicate that BNNT/CNT junctions could be multifunctional and applicable as memory, spintronic, electronic, and photonics devices with tunable band structures. This will lead to energy and material efficient multifunctional devices that will be beneficial to the society. However, experimental realization of BNNT/CNT junctions was hindered by the absent of a common growth technique for BNNTs and CNTs. In fact, the synthesis of BNNTs was very challenging and may involve high temperatures (up to 3000 degree Celsius by laser ablation) and explosive chemicals. During the award period, we have successfully developed a simple chemical vapor deposition (CVD) technique to grow BNNTs at 1100-1200 degree Celsius without using dangerous chemicals. A series of common catalyst have then been identified for the synthesis of BNNTs and CNTs. Both of these breakthroughs have led to our preliminary success in growing two types of BNNT/CNT junctions and two additional new nanostructures: 1) branching BNNT/CNT junctions and 2) co-axial BNNT/CNT junctions, 3) quantum dots functionalized BNNTs (QDs-BNNTs), 4) BNNT/graphene junctions. We have started to understand their structural, compositional, and electronic properties. Latest results indicate that the branching BNNT/CNT junctions and QDs-BNNTs are functional as room-temperature tunneling devices. We have submitted the application of a renewal grant to continue the study of these new energy efficient materials. Finally, this project has also strengthened our collaborations with multiple Department of Energyâ??s Nanoscale Science Research Centers (NSRCs), including the Center for Nanophase Materials Sciences (CNMS) at Oak Ridge National Laboratory, and the Center for Integrated Nanotechnologies (CINTs) at Sandia National Laboratories and Los Alamos National Laboratory. Results obtained during the current funding period have led to the publication of twelve peer reviewed articles, three review papers, two book and one encyclopedia chapters, and thirty eight conference/seminar presentation. One US provisional patent and one international patent have also been filed.

  17. Nonequilibrium transport through quantum-wire junctions and boundary defects for free massless bosonic fields

    E-Print Network [OSTI]

    Krzysztof Gaw?dzki; Clment Tauber

    2015-01-29T23:59:59.000Z

    We consider a model of quantum-wire junctions where the latter are described by conformal-invariant boundary conditions of the simplest type in the multicomponent compactified massless scalar free field theory representing the bosonized Luttinger liquids in the bulk of wires. The boundary conditions result in the scattering of charges across the junction with nontrivial reflection and transmission amplitudes. The equilibrium state of such a system, corresponding to inverse temperature $\\beta$ and electric potential $V$, is explicitly constructed both for finite and for semi-infinite wires. In the latter case, a stationary nonequilibrium state describing the wires kept at different temperatures and potentials may be also constructed. The main result of the present paper is the calculation of the full counting statistics (FCS) of the charge and energy transfers through the junction in a nonequilibrium situation. Explicit expressions are worked out for the generating function of FCS and its large-deviations asymptotics. For the purely transmitting case they coincide with those obtained in the litterature, but numerous cases of junctions with transmission and reflection are also covered. The large deviations rate function of FCS for charge and energy transfers is shown to satisfy the fluctuation relations and the expressions for FCS obtained here are compared with the Levitov-Lesovic formulae.

  18. Chemical Doping and Enhanced Solar Energy Conversion of Graphene/Silicon Junctions

    E-Print Network [OSTI]

    Li, Xinming; Wang, Kunlin; Wei, Jinquan; Fan, Guifeng; Li, Xiao; Wu, Dehai

    2010-01-01T23:59:59.000Z

    The effect of chemical doping of graphene films on the photovoltaic properties of the graphene/silicon Schottky junction solar cells was investigated. Thionyl chloride modification greatly enhanced the conductivity of graphene film, resulting in a significant improvement in cell performance with a 3-fold increase in conversion efficiency (up to 3.9%) and good short-term stability.

  19. Kinked p-n Junction Nanowire Probes for High Spatial Resolution Sensing and Intracellular Recording

    E-Print Network [OSTI]

    Liu, David R.

    - conducting nanoscale materials configured as field-effect transistors have been studied extensively localized near the junction, and while nanowire p-n diodes have been widely studied as photovoltaic devices studies have shown that nanoscale field- effect transistors (nanoFETs) can be synthetically encoded

  20. Tuning electron transport through a single molecular junction by bridge modification

    SciTech Connect (OSTI)

    Li, Xiao-Fei, E-mail: xf.li@uestc.edu.cn; Qiu, Qi [School of Optoelectronic Information, University of Electronic Science and Technology of China, Chengdu, Sichuan 610054 (China); Luo, Yi [Division of Theoretical Chemistry and Biology, School of Biotechnology, KTH, Royal Institute of Technology, S-106 91 Stockholm (Sweden)

    2014-07-07T23:59:59.000Z

    The possibility of controlling electron transport in a single molecular junction represents the ultimate goal of molecular electronics. Here, we report that the modification of bridging group makes it possible to improve the performance and obtain new functions in a single cross-conjugated molecular junction, designed from a recently synthesized bipolar molecule bithiophene naphthalene diimide. Our first principles results show that the bipolar characteristic remains after the molecule was modified and sandwiched between two metal electrodes. Rectifying is the intrinsic characteristic of the molecular junction and its performance can be enhanced by replacing the saturated bridging group with an unsaturated group. A further improvement of the rectifying and a robust negative differential resistance (NDR) behavior can be achieved by the modification of unsaturated bridge. It is revealed that the modification can induce a deviation angle about 4 between the donor and the acceptor ?-conjugations, making it possible to enhance the communication between the two ? systems. Meanwhile, the low energy frontier orbitals of the junction can move close to the Fermi level and encounter in energy at certain biases, thus a transport channel with a considerable transmission can be formed near the Fermi level only at a narrow bias regime, resulting in the improvement of rectifying and the robust NDR behavior. This finding could be useful for the design of single molecular devices.

  1. Title of Dissertation: MASKLESS FABRICATION OF JUNCTION FIELD EFFECT TRANSISTORS VIA FOCUSED ION BEAMS

    E-Print Network [OSTI]

    Anlage, Steven

    ABSTRACT Title of Dissertation: MASKLESS FABRICATION OF JUNCTION FIELD EFFECT TRANSISTORS VIA FOCUSED ION BEAMS Anthony John De Marco, Doctor of Philosophy, 2004 Dissertation directed by: Professor Dissertation submitted to the Faculty of the Graduate School of the University of Maryland, College Park

  2. 1364 Brief Communication Gap junction protein connexin-43 interacts directly with

    E-Print Network [OSTI]

    Mullen, Sean P.

    Increasing evidence indicates that gap-junctional Cx43 ismediate intercellular communication-terminal tail of connexin-43 (Cx43), the phorylate the Cx43 C-terminal tail (CT) via SH2 and SH3 domain in the regulation of Cx43 channel C-terminal residues of Cx43 interact with the second PDZ domain of the Zona

  3. N-PERT BACK JUNCTION SOLAR CELLS: AN OPTION FOR THE NEXT INDUSTRIAL TECHNOLOGY GENERATION?

    E-Print Network [OSTI]

    are introducing a new solar cell design: the Passivated Emitter and Rear Cell (PERC), which features a full-PERT (Passivated Emitter, Rear Totally Diffused) solar cells with a processing sequence based on an industrialN-PERT BACK JUNCTION SOLAR CELLS: AN OPTION FOR THE NEXT INDUSTRIAL TECHNOLOGY GENERATION? Bianca

  4. CMOS Interface Circuits for Spin Tunneling Junction Based Magnetic Random Access Memories

    SciTech Connect (OSTI)

    Ganesh Saripalli

    2002-12-31T23:59:59.000Z

    Magneto resistive memories (MRAM) are non-volatile memories which use magnetic instead of electrical structures to store data. These memories, apart from being non-volatile, offer a possibility to achieve densities better than DRAMs and speeds faster than SRAMs. MRAMs could potentially replace all computer memory RAM technologies in use today, leading to future applications like instan-on computers and longer battery life for pervasive devices. Such rapid development was made possible due to the recent discovery of large magnetoresistance in Spin tunneling junction devices. Spin tunneling junctions (STJ) are composite structures consisting of a thin insulating layer sandwiched between two magnetic layers. This thesis research is targeted towards these spin tunneling junction based Magnetic memories. In any memory, some kind of an interface circuit is needed to read the logic states. In this thesis, four such circuits are proposed and designed for Magnetic memories (MRAM). These circuits interface to the Spin tunneling junctions and act as sense amplifiers to read their magnetic states. The physical structure and functional characteristics of these circuits are discussed in this thesis. Mismatch effects on the circuits and proper design techniques are also presented. To demonstrate the functionality of these interface structures, test circuits were designed and fabricated in TSMC 0.35{micro} CMOS process. Also circuits to characterize the process mismatches were fabricated and tested. These results were then used in Matlab programs to aid in design process and to predict interface circuit's yields.

  5. Control of the electromagnetic environment for single Josephson junctions using arrays of dc

    E-Print Network [OSTI]

    Haviland, David

    ;ective impedance of the array can be varied in situ by applying an external magnetic #12;eld and Technology, 325 Broadway, Boulder, Colorado 80305, USA Abstract. We have measured the current-pair tunneling is induced in the single junction. The measured blockade voltage agrees with the theoretical

  6. PUBLISHED ONLINE: 1 DECEMBER 2013 | DOI: 10.1038/NMAT3811 Adaptive semiconductor/electrocatalyst junctions

    E-Print Network [OSTI]

    Cai, Long

    as an EC. Impedance and currentvoltage measurements have been used to show that CoPi collects and stores in situ using two working electrodes to independently monitor and control the potential and current `adaptive' SC/EC junctions where the effective Schottky barrier height changes in situ with the oxidation

  7. Control of the Electromagnetic Environment for Single Josephson Junctions Using Arrays of dc SQUIDs

    E-Print Network [OSTI]

    Haviland, David

    is that the effective impedance of the SQUID array can be varied in situ by applying an external magnetic field Postdoctoral Researcher), E-mail: michio@postman.riken.go.jp. Abstract--We have measured the current. This environmental effect on nano-scale junctions can be studied by measuring the current- voltage (IV

  8. Alloyed junction Ge Esaki diodes on Si substrates realised by aspect ratio trapping

    E-Print Network [OSTI]

    Rommel, Sean

    Alloyed junction Ge Esaki diodes on Si substrates realised by aspect ratio trapping technique D. Pawlik, S. Sieg, S.K. Kurinec, S.L. Rommel, Z. Cheng, J.-S. Park, J. Hydrick and A. Lochtefeld A Ge Esaki diode is demonstrated on Si atop a coalesced epitaxial layer of Ge grown through narrow openings in SiO2

  9. NREL scientists develop near-field optical microscopy techniques for imaging solar cell junctions and identify

    E-Print Network [OSTI]

    Solar cell producers are facing urgent pressures to lower module production cost.This achievementNREL scientists develop near-field optical microscopy techniques for imaging solar cell junctions is an increasingly important issue for silicon solar cells. The issue has taken center stage now that the solar

  10. Thermal conductance of the junction between single-walled carbon nanotubes

    E-Print Network [OSTI]

    McGaughey, Alan

    conductances of the carbon nanotube (CNT) junctions that would be found in a CNT aerogel are predicted using of carbon nanotubes (CNTs) (e.g., aligned films, mats, and aerogels) are candidates for use in electronic issue in all of these applications. Our focus here is related to single-walled CNT aerogels, which

  11. Andreev-level spectroscopy and Josephson-current switching in a three-terminal Josephson junction

    E-Print Network [OSTI]

    Demir, Hilmi Volkan

    Andreev-level spectroscopy and Josephson-current switching in a three-terminal Josephson junction H. The voltage V applied to the normal-metal terminal controls the occupation of Andreev energy levels En the Andreev level. The differential conductance along the normal-metal terminal permits spectroscopy

  12. Etching suspended superconducting hybrid junctions from a multilayer H. Q. Nguyen,1

    E-Print Network [OSTI]

    Paris-Sud XI, Universit de

    by an insulating oxide bar- rier (I) are a central component to mesoscopic electronic devices. The isothermal multilayer. The process involves few fabrication steps, is reliable and produces extremely high-quality tunnel junctions. Under an appropriate voltage bias, a significant electronic cooling is demonstrated

  13. A solvable model for scattering on a junction and a modified analytic perturbation procedure

    E-Print Network [OSTI]

    B. Pavlov

    2009-02-24T23:59:59.000Z

    We consider a one-body spin-less electron spectral problem for a resonance scattering system constructed of a quantum well weakly connected to a noncompact exterior reservoir, where the electron is free. The simplest kind of the resonance scattering system is a quantum network, with the reservoir composed of few disjoint cylindrical quantum wires, and the Schr\\"{o}dinger equation on the network, with the real bounded potential on the wells and constant potential on the wires. We propose a Dirichlet-to-Neumann - based analysis to reveal the resonance nature of conductance across the star-shaped element of the network (a junction), derive an approximate formula for the scattering matrix of the junction, construct a fitted zero-range solvable model of the junction and interpret a phenomenological parameter arising in Datta-Das Sarma boundary condition, see {\\cite{DattaAPL}, for T-junctions. We also propose using of the fitted zero-range solvable model as the first step in a modified analytic perturbation procedure of calculation of the corresponding scattering matrix.

  14. Tunneling characteristics in chemical vapor deposited graphene hexagonal boron nitride graphene junctions

    E-Print Network [OSTI]

    Feenstra, Randall

    1 Tunneling characteristics in chemical vapor deposited graphene ­ hexagonal boron nitride ­ graphene junctions T. Roy1 , L. Liu2 , S. de la Barrera,3 B. Chakrabarti1,4 , Z. R. Hesabi1 , C. A. Joiner1 Abstract: Large area chemical vapor deposited graphene and hexagonal boron nitride was used to fabricate

  15. In situ Formation of Highly Conducting Covalent Au-C Contacts for Single-Molecule Junctions

    SciTech Connect (OSTI)

    Cheng, Z.L.; Hybertsen, M.; Skouta, R.; Vazquez, H.; Widawsky, J.R.; Schneebeli, S.; Chen, W.; Breslow, R.; Venkataraman, L.

    2011-06-01T23:59:59.000Z

    Charge transport across metal-molecule interfaces has an important role in organic electronics. Typically, chemical link groups such as thiols or amines are used to bind organic molecules to metal electrodes in single-molecule circuits, with these groups controlling both the physical structure and the electronic coupling at the interface. Direct metal-carbon coupling has been shown through C60, benzene and {pi}-stacked benzene but ideally the carbon backbone of the molecule should be covalently bonded to the electrode without intervening link groups. Here, we demonstrate a method to create junctions with such contacts. Trimethyl tin (SnMe{sub 3})-terminated polymethylene chains are used to form single-molecule junctions with a break-junction technique. Gold atoms at the electrode displace the SnMe{sub 3} linkers, leading to the formation of direct Au-C bonded single-molecule junctions with a conductance that is {approx}100 times larger than analogous alkanes with most other terminations. The conductance of these Au-C bonded alkanes decreases exponentially with molecular length, with a decay constant of 0.97 per methylene, consistent with a non-resonant transport mechanism. Control experiments and ab initio calculations show that high conductances are achieved because a covalent Au-C sigma ({sigma}) bond is formed. This offers a new method for making reproducible and highly conducting metal-organic contacts.

  16. Microsimulation analysis of a hybrid system model of multiple merge junction highway and semiautomatic vehicles

    E-Print Network [OSTI]

    Girault, Alain

    , it receives its exit number, which of course has to be after the entry junction. Of course, all these figures Exit 3 9600 m Exit 1 960 m Exit 2 8640 m Entry 3 7680 m Entry 2 2640 m 10320 m Figure 1: Highwa section, which includes three merge junc tion and three exit ramps. We show through micro simulation

  17. FRONTIERS ARTICLE Efficiency enhancement of copper contaminated radial pn junction solar cells

    E-Print Network [OSTI]

    Yang, Peidong

    energy represents one of the most important sustainable and renewable energy sources. The most common power from solar cells [1]. The reason is that crystalline silicon solar cell manufacturingFRONTIERS ARTICLE Efficiency enhancement of copper contaminated radial pn junction solar cells

  18. SUPERCONDUCTING TUNNEL JUNCTION BOLOMETERS J. CLARKE, G. I. HOFFER and P. L. RICHARDS

    E-Print Network [OSTI]

    Boyer, Edmond

    69 SUPERCONDUCTING TUNNEL JUNCTION BOLOMETERS J. CLARKE, G. I. HOFFER and P. L. RICHARDS DepartmentIioration possible de ces performances. Abstract. 2014 Two new types of superconducting infrared bolometer doped germanium, are widely used as sensitive broadband infrared detectors. Superconducting bolometers

  19. haRVey: satisfaisabilite et theories Diego Caminha B. de Oliveira (Univ. Rio Grande do Norte, Bresil)

    E-Print Network [OSTI]

    Fontaine, Pascal

    haRVey: satisfaisabilit´e et th´eories Diego Caminha B. de Oliveira (Univ. Rio Grande do Norte, Br´esil) David D´eharbe (Univ. Rio Grande do Norte, Br´esil), Pascal Fontaine (LORIA ­ Universit´e de Nancy) Univ. Rio Grande do Norte, Br´esil / LORIA ­ Universit´e de Nancy Le probl`eme de la satisfaisabilit´e de

  20. Specific heat and bimodality in canonical and grand canonical versions of the thermodynamic model

    E-Print Network [OSTI]

    G. Chaudhuri; S. Das Gupta

    2007-08-26T23:59:59.000Z

    We address two issues in the thermodynamic model for nuclear disassembly. Surprisingly large differences in results for specific heat were seen in predictions from the canonical and grand canonical ensembles when the nuclear system passes from liquid-gas co-existence to the pure gas phase. We are able to pinpoint and understand the reasons for such and other discrepancies when they appear. There is a subtle but important difference in the physics addressed in the two models. In particular if we reformulate the parameters in the canonical model to better approximate the physics addressed in the grand canonical model, calculations for observables converge. Next we turn to the issue of bimodality in the probability distribution of the largest fragment in both canonical and grand canonical ensembles. We demonstrate that this distribution is very closely related to average multiplicities. The relationship of the bimodal distribution to phase transition is discussed.

  1. TRIPLE-JUNCTION A-SI SOLAR CELLS WITH HEAVILY DOPED THIN INTERFACE LAYERS AT THE TUNNEL W. Wang, H. Povolny, W. Du, X.B. Liao and X. Deng

    E-Print Network [OSTI]

    Deng, Xunming

    TRIPLE-JUNCTION A-SI SOLAR CELLS WITH HEAVILY DOPED THIN INTERFACE LAYERS AT THE TUNNEL JUNCTIONS W of Toledo, Toledo, OH 43606 USA ABSTRACT Triple-junction a-Si based solar cells, having a structure of SS cells and between the middle and bottom component cells on the efficiency of triple- junction solar

  2. Radiation response of single and dual junction p{sup +}n InGaP/GaAs space solar cells

    SciTech Connect (OSTI)

    Walters, R.J.; Xapsos, M.A.; Summers, G.P. [Naval Research Lab., Washington, DC (United States); Cotal, H.L.; Messenger, S.R. [SFA, Inc., Largo, MD (United States)

    1997-12-31T23:59:59.000Z

    The radiation response of single and dual-junction p{sup +}n InGaP/GaAs solar cells is studied. The degradation mechanisms of single-junction InGaP cells are identified, and characteristic degradation curves in terms of displacement damage dose are calculated. The response of dual-junction cells is presented, and the response of each sub-cell is discussed. The cell response is compared with those of other technologies. The effect of current injection on irradiated InGaP cell is presented.

  3. Investigation of techniques for improvement of seasonal streamflow forecasts in the Upper Rio Grande

    E-Print Network [OSTI]

    Lee, Song-Weon

    2005-11-01T23:59:59.000Z

    3.2.1. Rio Grande Watershed.????????????.. 47 3.2.2. Rio Ojo Watershed.?????????????? 48 3.3. Method and Data.??????????????????... 49 3.3.1. Snowmelt Runoff Model (SRM)..????????.. 49 3.3.2. Determination of SCA...-5. Polar plot (bin size: 30 o ) showing the dependence of SCA as a function of aspect for (A) the Rio Grande and (B) the Rio Ojo watersheds for MODIS (solid line) and NOHRSC (dotted line). Selected days are the same as those of Figure 3-4??????? 66...

  4. Union County - La Grande, Oregon geothermal district heating: feasibility assessment. Final report

    SciTech Connect (OSTI)

    Jenkins, H. II; Giddings, M.; Hanson, P.

    1982-09-01T23:59:59.000Z

    This report presents an assessment of geothermal district heating in the City of La Grande, Oregon. Eight study area districts were analyzed to determine their economic feasibility. Results from the analyses conclude that certain districts within the City of La Grande are economically feasible if certain assumptions are correct. Development of geothermal district heating for these areas would provide direct energy and dollar savings to the building owners and would also provide direct and indirect benefits to low and moderate income households within the City.

  5. An investigation of winter Texans' time usage in the Lower Rio Grande Valley

    E-Print Network [OSTI]

    Marshall, Keith Alan

    1991-01-01T23:59:59.000Z

    will increase. Operational Definitions The following definitions were used to guide this study: ~Win ~rT x ns - Retired persons who stay in the Lower Rio Grande Valley of Texas for at least one month during the Winter. consisting of four counties (Cameron...AN INVESTIGATION OF WINTER TEXANS' TIME USAGE IN THE LOWER RIO GRANDE VALLEY A Thesis by Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE...

  6. Distinct regions of right temporo-parietal junction are selective for theory of mind and exogenous attention

    E-Print Network [OSTI]

    Triantafyllou, Christina

    In functional magnetic resonance imaging (fMRI) studies, a cortical region in the right temporo-parietal junction (RTPJ) is recruited when participants read stories about people's thoughts (Theory of Mind). Both fMRI and ...

  7. Investigation of Band-Offsets at Monolayer-Multilayer MoS2 Junctions by Scanning Photocurrent Microscopy

    E-Print Network [OSTI]

    Howell, Sarah L; Wu, Chung-Chiang; Chen, Kan-Sheng; Sangwan, Vinod K; Kang, Junmo; Marks, Tobin J; Hersam, Mark C; Lauhon, Lincoln J

    2015-01-01T23:59:59.000Z

    The thickness-dependent band structure of MoS2 implies that discontinuities in energy bands exist at the interface of monolayer (1L) and multilayer (ML) thin films. The characteristics of such heterojunctions are analyzed here using current versus voltage measurements, scanning photocurrent microscopy, and finite element simulations of charge carrier transport. Rectifying I-V curves are consistently observed between contacts on opposite sides of 1L-ML junctions, and a strong bias-dependent photocurrent is observed at the junction. Finite element device simulations with varying carrier concentrations and electron affinities show that a type II band alignment at single layer/multi-layer junctions reproduces both the rectifying electrical characteristics and the photocurrent response under bias. However, the zero-bias junction photocurrent and its energy dependence are not explained by conventional photovoltaic and photothermoelectric mechanisms, indicating the contributions of hot carriers.

  8. InGaP/GaAs and InGaAs mechanically-stacked triple-junction solar cells

    SciTech Connect (OSTI)

    Takamoto, T.; Ikeda, E.; Agui, T. [Japan Energy Corp., Toda, Saitama (Japan)] [and others

    1997-12-31T23:59:59.000Z

    Triple-junction cells with AM1.5 efficiencies of over 33% have been demonstrated. A planar type InGaP/GaAs monolithic dual-junction cell was fabricated on a semi-insulating FaAs substrate, which has high infra-red transparency. Then a dual-junction cell, with efficiency of 27--28%, was mechanically stacked on an InGaAs cell fabricated on an InP substrate. The bottom InGaAs cell showed an efficiency of 6.2% under the InGaP/GaAs cell, and a total efficiency of 33--34% was achieved for the four-terminal triple-junction cell.

  9. Return Migrations, Assimilation, and Cultural Adaptations among Mexican American Professionals from the Lower Rio Grande Valley of South Texas

    E-Print Network [OSTI]

    Garcia, Jesus Alberto

    2012-07-16T23:59:59.000Z

    RETURN MIGRATIONS, ASSIMILATION, AND CULTURAL ADAPTATIONS AMONG MEXICAN AMERICAN PROFESSIONALS FROM THE LOWER RIO GRANDE VALLEY OF SOUTH TEXAS A Dissertation by JESUS ALBERTO GARCIA Submitted... Migrations, Assimilation, and Cultural Adaptations among Mexican American Professionals from the Lower Rio Grande Valley of South Texas Copyright 2011 Jesus Alberto Garcia RETURN MIGRATIONS, ASSIMILATION, AND CULTURAL ADAPTATIONS AMONG...

  10. Effects of Jackson Lake Dam on the Snake River and its floodplain, Grand Teton National Park, Wyoming, USA

    E-Print Network [OSTI]

    Marston, Richard A.

    Effects of Jackson Lake Dam on the Snake River and its floodplain, Grand Teton National Park In 1906, the Bureau of Reclamation created Jackson Lake Dam on the Snake River in what later became Grand Teton National Park. The geomorphic, hydrologic and vegetation adjustments downstream of the dam have

  11. An Overview of the Operational Characteristics of Selected Irrigation Districts in the Texas Lower Rio Grande Valley: Brownsville Irrigation District

    E-Print Network [OSTI]

    Stubbs, Megan J.; Rister, M. Edward; Sturdivant, Allen W.; Lacewell, Ronald D.

    TR-274 August 2004 An Overview of the Operational Characteristics of Selected Irrigation Districts in the Texas Lower Rio Grande Valley: Brownsville Irrigation District Megan J. Stubbs M. Edward Rister Allen W... Grande Valley: Brownsville Irrigation District Megan J. Stubbs M. Edward Rister Allen W. Sturdivant Ronald D. Lacewell Texas Water Resources Institute Texas A&M University System This research was financially supported...

  12. THE APPLICATION OF THE LAND TRANSFORMATION, GROUNDWATER FLOW AND SOLUTE TRANSPORT MODELS FOR MICHIGAN'S GRAND TRAVERSE BAY

    E-Print Network [OSTI]

    1 THE APPLICATION OF THE LAND TRANSFORMATION, GROUNDWATER FLOW AND SOLUTE TRANSPORT MODELS). The two hydrogeologic models that are being used here allow us to explore the dynamics of groundwater flow Meeting, New Orleans, Louisiana, March 14, 2001. #12;2 INTRODUCTION Grand Traverse Bay and the Grand

  13. Data Mining: Data Analysis on a Grand Scale? \\Lambda Padhraic Smyth

    E-Print Network [OSTI]

    Smyth, Padhraic

    Data Mining: Data Analysis on a Grand Scale? \\Lambda Padhraic Smyth Information and Computer data mining has evolved largely as a result of efforts by computer scientists to address the needs of this historical context, data mining to date has largely focused on computational and algorithmic issues rather

  14. Impacts of Irrigation on Citrus in the Lower Rio Grande Valley

    E-Print Network [OSTI]

    Enciso, Juan; Sauls, Julian W.; Wiedenfeld, Robert P.; Nelson, Shad D.

    2008-07-11T23:59:59.000Z

    Citrus is an important crop in the Lower Rio Grande Valley, but reduced water supplies in the area mean irrigation must be used. Citrus farmers can use different irrigation methods and practices to get the most from the available water supply....

  15. Peak discharge of a Pleistocene lava-dam outburst flood in Grand Canyon, Arizona, USA

    E-Print Network [OSTI]

    Received 6 May 2005 Availble online 7 February 2006 Abstract The failure of a lava dam 165,000 yr ago dam-failure and unsteady flow modeling to estimate a peak discharge and flow hydrograph. FailurePeak discharge of a Pleistocene lava-dam outburst flood in Grand Canyon, Arizona, USA Cassandra R

  16. Flow, Salts, and Trace Elements in the Rio Grande: A Review

    E-Print Network [OSTI]

    Miyamoto, S.; Fenn, L. B.; Swietlik, D.

    1995-01-01T23:59:59.000Z

    . Juarez 290 Matamoros 72 Nueva Laredo 67 Reynosa 43 Cd. Acuna 32 Piedras Negras 30 Total 534 Border to Calif. & Arizona Tijuana 334 Mexicali 131 Nogales 64 Tecate Ensenada 33 Others 79 Total 641 Interior Mexico Total 285 Grand Total 1460 exceed 20 and 10...

  17. The Image Grand Tour for Exploring Medical Images Jurgen Symanzik1

    E-Print Network [OSTI]

    Symanzik, Jrgen

    , the time dimension, which many data an- alysts find very helpful. Wegman (1992) discussed a form are relatively computationally intensive. Wegman & Shen (1993) discussed an approximate one and two discussion of the image grand tour was given by Wegman, Poston & Solka (1998). The main application consisted

  18. Grand Coulee Dam Wildlife Mitigation Program : Pygmy Rabbit Programmatic Management Plan, Douglas County, Washington.

    SciTech Connect (OSTI)

    Ashley, Paul

    1992-06-01T23:59:59.000Z

    The Northwest Power Planning Council and the Bonneville Power Administration approved the pygmy rabbit project as partial mitigation for impacts caused by the construction of Grand Coulee Dam. The focus of this project is the protection and enhancement of shrub-steppe/pygmy rabbit habitat in northeastern Washington.

  19. PROFESORADO E INVESTIGADORES PARTICIPANTES Fransualdo Acevedo Universidad Federal de Ro Grande del Norte

    E-Print Network [OSTI]

    Escolano, Francisco

    Norte Pedro Baos Universidad de Murcia Isabel Baos Universidad de Murcia Susana Bautista Universidad de Alicante Nora Bringas Colegio de la Frontera Norte Yara Camargo Fundacin Victoria Amaznica Espluga Universidad Autnoma de Barcelona Erminio Fernandes Universidad Federal de Ro Grande del Norte

  20. An applied paleoecology case study: Bahia Grande, Texas prior to construction of the Brownsville Ship Channel

    E-Print Network [OSTI]

    Lichlyter, Stephen Alvah

    2006-08-16T23:59:59.000Z

    of Laguna Madre. Since that time, Bahia Grande has been primarily dry with only ephemeral fresh water coming from heavy rainfall events, resulting in a severe decline in biological productivity. A restoration project led by the U.S. Fish and Wildlife Service...

  1. The Cerro Grande Fire - From Wildfire Modeling Through the Fire Aftermath

    SciTech Connect (OSTI)

    Rudell, T. M. (Theresa M.); Gille, R. W. (Roland W.)

    2001-01-01T23:59:59.000Z

    The Cerro Grande Fire developed from a prescribed burn by the National Park Service at Bandelier National Monument near Los Alamos, New Mexico. When the burn went out of control and became a wildfire, it attracted worldwide attention because it threatened the birthplace of the atomic bomb, Los Alamos National Laboratory (LANL). Was LANL prepared for a fire? What lessons have been learned?

  2. The Cerro Grande Fire - From Wildlife Modeling Through the Fire Aftermath

    SciTech Connect (OSTI)

    Rudell, T. M. (Theresa M.); Gille, R. W. (Roland W.)

    2001-01-01T23:59:59.000Z

    The Cerro Grande Fire developed from a prescribed burn by the National Park Service at Bandelier National Monument near Los Alamos, New Mexico. When the burn went out of control and became a wildfire, it attracted worldwide attention because it threatened the birthplace of the atomic bomb, Los Alamos National Laboratory (LANL). Was LANL prepared for a fire? What lessons have been learned?

  3. GESTION DURABLE DES RISQUES D'AFFAISSEMENT MINIER : CHOIX DE STRATEGIES -CAS DE MOYEUVRE-GRANDE.

    E-Print Network [OSTI]

    Boyer, Edmond

    GESTION DURABLE DES RISQUES D'AFFAISSEMENT MINIER : CHOIX DE STRATEGIES - CAS DE MOYEUVRE abandonnes. La gestion des risques qui en dcoule peut se faire selon diffrentes stratgies et conduire un application l'tude du cas de la commune de Moyeuvre-Grande (57) travers une analyse cots

  4. Institutional Adjustments for Coping with Prolonged and Severe Drought in the Rio Grande Basin

    E-Print Network [OSTI]

    Ward, Frank A.; Young, Robert; Lacewell, Ronald D.; King, J. Philip; Frasier, Marshall; McGuckin, J. Thomas; DuMars, Charles R.; Booker, James; Ellis, John; Srinivasan, Raghavan

    2001-01-01T23:59:59.000Z

    Defining Aquifers ............................................... 93 Defining Areas with Similar Soil Characteristics ...................... 94 Allocation of Surface Water to Representative Agricultural Areas ......... 95 Allocation of Groundwater... ........................ 154 Relation Between Aquifer and Surface Water Use .............. 154 Integrated Model for Institutional Response to Drought in the Rio Grande Basin ......... 155 Summary ........................................................... 155 Background...

  5. FOR IMMEDIATE RELEASE 7/2/10 Grand Opening and Dedication of

    E-Print Network [OSTI]

    patriots and pilots, so bring your family and enjoy the grand opening of the Capt. Fletcher E. Adams 357th to Leiston Field in Great Britain as they sought to protect the bomber trains successfully wreaking havoc son alone in the small village of Ida, Louisiana. Many of the Aces of the 357th went on to lead lives

  6. Tree rings and multiseason drought variability in the lower Rio Grande Basin, USA

    E-Print Network [OSTI]

    Castro, Christopher L.

    compound the effect of droughts, impact natural vegetation and phenological responses, and exacerbate waterTree rings and multiseason drought variability in the lower Rio Grande Basin, USA C. A. Woodhouse,1 9 January 2013; published 8 February 2013. [1] Agriculture and ranching in semiarid regions often

  7. EA-1950: Grand Coulee-Creston Transmission Line Rebuild; Grant and Lincoln Counties, Washington

    Broader source: Energy.gov [DOE]

    Bonneville Power Administration prepared this EA to evaluate potential environmental impacts of rebuilding approximately 28 miles of the Grand Coulee-Creston No. 1 115-kilovolt (kV) transmission line between Coulee Dam in Grant County and Creston in Lincoln County, Washington.

  8. Influence of uniaxial pressure on the critical temperature for long delays in GaAs junction lasers

    SciTech Connect (OSTI)

    Morosini, M.B.Z.; Patel, N.B.; Nunes, F.D.

    1980-09-01T23:59:59.000Z

    In this work we report on the influence of uniaxial pressure applied perpendicularly to junction laser on the behavior of the critical temperature for the onset of long delays in GaAs junction lasers. Experimental data showing this influence for lasers operating in a TE or TM polarization are presented and explained on the basis of a thermal theory of long delays and related phenomena.

  9. Antenna-coupled Photon Emission from hexagonal Boron Nitride Tunnel Junctions

    E-Print Network [OSTI]

    Parzefall, Markus; Jain, Achint; Watanabe, Kenji; Taniguchi, Takashi; Novotny, Lukas

    2015-01-01T23:59:59.000Z

    The ultrafast conversion of electrical to optical signals at the nanoscale is of fundamental interest for data processing, telecommunication and optical interconnects. However, the modulation bandwidths of semiconductor LEDs are limited by the spontaneous recombination rate of electron-hole pairs and the footprint of electrically-driven ultrafast lasers is too large for practical on-chip integration. A metal-insulator-metal (MIM) tunnel junction approaches the ultimate size limit of electronic devices and its operating speed is fundamentally limited only by the tunneling time. Here we study the conversion of electron energy - localized in vertical gold-h-BN-gold tunnel junctions - into free space photons, mediated by resonant slot antennas. Optical antennas efficiently bridge the size-mismatch between nanoscale volumes and far-field radiation and strongly enhance the electron-photon conversion efficiency. We achieve polarized, directional and resonantly enhanced light emission from inelastic electron tunnelin...

  10. Theory of microwave spectroscopy of Andreev bound states with a Josephson junction

    E-Print Network [OSTI]

    L. Bretheau; . Girit; M. Houzet; H. Pothier; D. Esteve; C. Urbina

    2014-10-10T23:59:59.000Z

    We present a microscopic theory for the current through a tunnel Josephson junction coupled to a non-linear environment, which consists of an Andreev two-level system coupled to a harmonic oscillator. It models a recent experiment [Bretheau, Girit, Pothier, Esteve, and Urbina, Nature (London) 499, 312 (2013)] on photon spectroscopy of Andreev bound states in a superconducting atomic-size contact. We find the eigenenergies and eigenstates of the environment and derive the current through the junction due to inelastic Cooper pair tunneling. The current-voltage characteristic reveals the transitions between the Andreev bound states, the excitation of the harmonic mode that hybridizes with the Andreev bound states, as well as multi-photon processes. The calculated spectra are in fair agreement with the experimental data.

  11. Electrical characteristics and interface structure of magnetic tunnel junctions with hafnium oxyfluoride barrier

    SciTech Connect (OSTI)

    Yu, Y.Y.; Kim, D.S.; Char, K. [Center for Strongly Correlated Materials Research and School of Physics, Seoul National University, Seoul 151-742 (Korea, Republic of)

    2004-12-01T23:59:59.000Z

    We have studied the effects of fluorine inclusion on the electrical transport characteristics and interface structure of the hafnium oxide barrier in a magnetic tunnel junction. The tunneling magnetoresistance (TMR) and resistance-area (RA) as a function of oxidation time show that the TMR ratio of the hafnium oxyfluoride barrier is higher (8.3%) than that of the hafnium oxide barrier (5.7%) at their optimum conditions, and the oxyfluoride barrier junctions maintain a high TMR ratio even when the RA product increases by three orders of magnitude. X-ray photoelectron spectroscopy analysis shows that the fluorine atoms in the oxyfluoride barrier play an important role in the formation of a barrier with uniform composition. We believe that the initial fluoride layer is causing the subsequent oxygen diffusion to slow down, resulting in the formation of a defect-free hafnium oxide layer. These results are consistent with what we have found for aluminum oxyfluoride barriers.

  12. Giant amplification of tunnel magnetoresistance in a molecular junction: Molecular spin-valve transistor

    SciTech Connect (OSTI)

    Dhungana, Kamal B.; Pati, Ranjit, E-mail: patir@mtu.edu [Department of Physics, Michigan Technological University, Houghton, Michigan 49931 (United States)

    2014-04-21T23:59:59.000Z

    Amplification of tunnel magnetoresistance by gate field in a molecular junction is the most important requirement for the development of a molecular spin valve transistor. Herein, we predict a giant amplification of tunnel magnetoresistance in a single molecular spin valve junction, which consists of Ru-bis-terpyridine molecule as a spacer between two ferromagnetic nickel contacts. Based on the first-principles quantum transport approach, we show that a modest change in the gate field that is experimentally accessible can lead to a substantial amplification (320%) of tunnel magnetoresistance. The origin of such large amplification is attributed to the spin dependent modification of orbitals at the molecule-lead interface and the resultant Stark effect induced shift in channel position with respect to the Fermi energy.

  13. Bedrock acquifer geometry in the Panther Junction area of Big Bend National Park, Texas

    E-Print Network [OSTI]

    Abbott, Caroline Lownes

    1983-01-01T23:59:59.000Z

    areas where an igneous intrusive i. s known to exist as indicated by well data and geologic maps . The location of these impermeable igneous intrusions and their relationship to the water bearing sediments is important as a trapping mechanism. , espec.... Bouguer gravity map of the Big Bend region by Metcalfe and Clarke with the location of the gravity study in the Panther Juncti. on area. Generalised stratigraphic nomenclature and correlation, Panther Junction Area, Big Bend National Park...

  14. Conductance states of molecular junctions for encoding binary information: a computational approach

    E-Print Network [OSTI]

    Agapito, Luis Alberto

    2009-06-02T23:59:59.000Z

    CONDUCTANCE STATES OF MOLECULAR JUNCTIONS FOR ENCODING BINARY INFORMATION: A COMPUTATIONAL APPROACH A Dissertation by LUIS ALBERTO AGAPITO Submitted to the Office of Graduate Studies of Texas A&M University in partial... Dissertation by LUIS ALBERTO AGAPITO Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment of the requirements for the degree of DOCTOR OF PHILOSOPHY Approved by: Chair of Committee, Jorge M...

  15. Physical model of the contact resistivity of metal-graphene junctions

    SciTech Connect (OSTI)

    Chaves, Ferney A., E-mail: ferneyalveiro.chaves@uab.cat; Jimnez, David [Departament d'Enginyeria Electrnica, Escola d'Enginyeria, Universitat Autnoma de Barcelona, Campus UAB, 08193 Bellaterra, Barcelona (Spain); Cummings, Aron W. [ICN2Institut Catal de Nanocincia i Nanotecnologia, Campus UAB, 08193 Bellaterra, Barcelona (Spain); Roche, Stephan [ICN2Institut Catal de Nanocincia i Nanotecnologia, Campus UAB, 08193 Bellaterra, Barcelona (Spain); ICREA, Instituci Catalana de Recerca i Estudis Avanats, 08070 Barcelona (Spain)

    2014-04-28T23:59:59.000Z

    While graphene-based technology shows great promise for a variety of electronic applications, including radio-frequency devices, the resistance of the metal-graphene contact is a technological bottleneck for the realization of viable graphene electronics. One of the most important factors in determining the resistance of a metal-graphene junction is the contact resistivity. Despite the large number of experimental works that exist in the literature measuring the contact resistivity, a simple model of it is still lacking. In this paper, we present a comprehensive physical model for the contact resistivity of these junctions, based on the Bardeen Transfer Hamiltonian method. This model unveils the role played by different electrical and physical parameters in determining the specific contact resistivity, such as the chemical potential of interaction, the work metal-graphene function difference, and the insulator thickness between the metal and graphene. In addition, our model reveals that the contact resistivity is strongly dependent on the bias voltage across the metal-graphene junction. This model is applicable to a wide variety of graphene-based electronic devices and thus is useful for understanding how to optimize the contact resistance in these systems.

  16. Transport in arrays of submicron Josephson junctions over a ground plane

    SciTech Connect (OSTI)

    Ho, Teressa Rae [Univ. of California, Berkeley, CA (US). Dept. of Physics

    1997-12-01T23:59:59.000Z

    One-dimensional (1D) and two-dimensional (2D) arrays of Al islands linked by submicron Al/Al{sub x}O{sub y}/Al tunnel junctions were fabricated on an insulating layer grown on a ground plane. The arrays were cooled to temperatures as low as 20 mK where the Josephson coupling energy E{sub J} of each junction and the charging energy E{sub C} of each island were much greater than the thermal energy k{sub B}T. The capacitance C{sub g} between each island and the ground plane was much greater than the junction capacitance C. Two classes of arrays were studied. In the first class, the normal state tunneling resistance of the junctions was much larger than the resistance quantum for single electrons, R{sub N}{much_gt} R{sub Q{sub e}}{identical_to} h/e{sup 2} {approx} 25.8 k{Omega}, and the islands were driven normal by an applied magnetic field such that E{sub J} = 0 and the array was in the Coulomb blockade regime. The arrays were made on degenerately-doped Si, thermally oxidized to a thickness of approximately 100 nm. The current-voltage (I - V) characteristics of a 1D and a 2D array were measured and found to display a threshold voltage V{sub T} below which little current flows. In the second class of arrays, the normal state tunneling resistance of the junctions was close to the resistance quantum for Cooper pairs, R{sub N}{approx}R{sub Q}{equivalent_to}h/4e{sup 4}{approx}6.45k{Omega}, such that E{sub J}/E{sub C}{approx}1. The arrays were made on GaAs/Al{sub 0.3}Ga{sub 0.7}As heterostructures with a two-dimensional electron gas approximately 100 nm below the surface. One array displayed superconducting behavior at low temperature. Two arrays displayed insulating behavior at low temperature, and the size of the Coulomb gap increased with increasing R{sub g}.

  17. Two-Dimensional Measurement of n+-p Asymmetrical Junctions in Multicrystalline Silicon Solar Cells Using AFM-Based Electrical Techniques with Nanometer Resolution: Preprint

    SciTech Connect (OSTI)

    Jiang, C. S.; Moutinho, H. R.; Li, J. V.; Al-Jassim, M. M.; Heath, J. T.

    2011-07-01T23:59:59.000Z

    Lateral inhomogeneities of modern solar cells demand direct electrical imaging with nanometer resolution. We show that atomic force microscopy (AFM)-based electrical techniques provide unique junction characterizations, giving a two-dimensional determination of junction locations. Two AFM-based techniques, scanning capacitance microscopy/spectroscopy (SCM/SCS) and scanning Kelvin probe force microscopy (SKPFM), were significantly improved and applied to the junction characterizations of multicrystalline silicon (mc-Si) cells. The SCS spectra were taken pixel by pixel by precisely controlling the tip positions in the junction area. The spectra reveal distinctive features that depend closely on the position relative to the electrical junction, which allows us to indentify the electrical junction location. In addition, SKPFM directly probes the built-in potential over the junction area modified by the surface band bending, which allows us to deduce the metallurgical junction location by identifying a peak of the electric field. Our results demonstrate resolutions of 10-40 nm, depending on the techniques (SCS or SKPFM). These direct electrical measurements with nanometer resolution and intrinsic two-dimensional capability are well suited for investigating the junction distribution of solar cells with lateral inhomogeneities.

  18. Light colored scalar as messenger of up-quark flavor dynamics in grand unified theories

    SciTech Connect (OSTI)

    Dorsner, Ilja [Department of Physics, University of Sarajevo, Zmaja od Bosne 33-35, 71000 Sarajevo (Bosnia and Herzegowina); Fajfer, Svjetlana [Department of Physics, University of Ljubljana, Jadranska 19, 1000 Ljubljana (Slovenia); J. Stefan Institute, Jamova 39, P.O. Box 3000, 1001 Ljubljana (Slovenia); Kamenik, Jernej F.; Kosnik, Nejc [J. Stefan Institute, Jamova 39, P.O. Box 3000, 1001 Ljubljana (Slovenia)

    2010-11-01T23:59:59.000Z

    The measured forward-backward asymmetry in the tt production at the Tevatron might be explained by the additional exchange of a colored weak singlet scalar. Such state appears in some of the grand unified theories, and its interactions with the up-quarks are purely antisymmetric in flavor space. We systematically investigate the resulting impact on charm and top quark physics. The constraints on the relevant Yukawa couplings come from the experimentally measured observables related to D{sup 0}-D{sup 0} oscillations, as well as dijet and single-top production measurements at the Tevatron. After fully constraining the relevant Yukawa couplings, we predict possible signatures of this model in rare top quark decays. In a class of grand unified models we demonstrate how the obtained information enables to constrain the Yukawa couplings of the up-quarks at very high energy scale.

  19. Estimated Benefits of IBWC Rio Grande Flood-Control Projects in the United States

    E-Print Network [OSTI]

    Sturdivant, Allen W.; Lacewell, Ronald D.; Michelsen, Ari M.; Rister, M. Edward; Assadian, Naomi; Eriksson, Marian; Freeman, Roger; Jacobs, Jennifer H.; Madison, W. Tom; McGuckin, James T.; Morrison, Wendy; Robinson, John R.C.; Staats, Chris; Sheng, Zhuping; Srinivasan, R.; Villalobos, Joshua I.

    TR- 275 2004 Estimated Benefits of IBWC Rio Grande Flood-Control Projects in the United States Allen W. Sturdivant Ronald D. Lacewell Ari M. Michelsen M. Edward Rister Naomi Assadian Marian Eriksson Roger Freeman Jennifer H... Flood-Control Projects in the United States Prepared for: INTERNATIONAL BOUNDARY AND WATER COMMISSION, UNITED STATES SECTION EL PASO, TEXAS SEPTEMBER 2004 Prepared by: Texas Agriculture Experiment Station, and Texas Water Resources Institute of the Texas...

  20. An analysis of industrial composition and growth in the Upper Rio Grande State Planning Region

    E-Print Network [OSTI]

    Zeghidi, Khaled

    1978-01-01T23:59:59.000Z

    . Jones The purpose of this study was to describe in detail the indus- trial composition and past growth of a six-county area of the Upper Rio Grande State Planning Region, and identify the industries in which each county had a comparative advantage.... Knowledge of the historical changes, the composition of in- dustries and industries for which an area has comparative advantages is important in regional economic development efforts. The measure- ment of industrial mix and competitive-share of a given...