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1997 Comprehensive TNX Area Annual Groundwater and Effectiveness Monitoring Report
Shallow groundwater beneath the TNX Area at the Savannah River Site (SRS) has been contaminated with chlorinated volatile organic compounds (CVOCs) such as trichloroethylene (TCE) and carbon tetrachloride. In November 1994, an Interim Record of Decision (IROD) was agreed to and signed by the U. S. Department of Energy (DOE), the Environmental Protection Agency (EPA), and the South Carolina Department of Health {ampersand} Environmental Control (SCDHEC). The Interim Record of Decision requires the installation of a hybrid groundwater corrective action (HGCA) to stabilize the plume of groundwater contamination and remove CVOCs dissolved in the groundwater. The hybrid groundwater corrective action included a recovery well network, purge water management facility, air stripper, and an airlift recirculation well. The recirculation well was dropped pursuant to a test that indicated it to be ineffective at the TNX Area. Consequently, the groundwater corrective action was changed from a hybrid to a single action, pump-and-treat approach. The Interim Action (IA) T-1 air stripper system began operation on September 16, 1996. a comprehensive groundwater monitoring program was initiated to measure the effectiveness of the system. As of December 31, 1997, the system has treated 32 million gallons of contaminated groundwater removed 32 pounds of TCE. The …
Date:
April 1998
Creator:
Chase, J.
Object Type:
Report
System:
The UNT Digital Library
1998 Small Agency Management Control Audit
Report of the Texas State Auditor's Office related to the determination of adequate controls in six small agencies to meet legislative mandates and deliver intended benefits, and to the identification of weaknesses in controls over human resources, financial management, policy management, management information systems, and licensing/enforcement.
Date:
April 1998
Creator:
Texas. Office of the State Auditor.
Object Type:
Report
System:
The Portal to Texas History
1998 wire development workshop proceedings
This report consists of vugraphs of the presentations at the conference. The conference was divided into the following sessions: (1) First Generation Wire Development: Status and Issues; (2) First Generation Wire in Pre-Commercial Prototypes; (3) Second Generation Wire Development: Private Sector Progress and Issues; (4) Second Generation Wire Development: Federal Laboratories; and (5) Fundamental Research Issues for HTS Wire Development.
Date:
April 1, 1998
Creator:
unknown
Object Type:
Article
System:
The UNT Digital Library
Abilene Philharmonic Playbill: April 18-May 2, 1998
Program for Abilene Philharmonic concerts performed on April 18th (seventh concert, classical) and May 2nd (eighth concert, classical) during the 48th season. It includes information about the pieces performed, artists and musicians, and advertising from local companies.
Date:
April 1998
Creator:
Abilene Philharmonic
Object Type:
Book
System:
The Portal to Texas History
Accountability report - fiscal year 1997
This document contains the US NRC`s accountability report for fiscal year 1997. Topics include uses of funds, financial condition, program performance, management accountability, and the audited financial statement.
Date:
April 1, 1998
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
ACNW - 1998 strategic plan
This plan provides strategic direction to The Advisory Committee on Nuclear Waste (ACNW) in 1998 and beyond for focusing on issues most important to the NRC in carrying out its mission of protecting public health and safety, promoting the common defense and security, and protecting the environment.
Date:
April 1998
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Acoustic resonance for nonmetallic mine detection
The feasibility of acoustic resonance for detection of plastic mines was investigated by researchers at the Oak Ridge National Laboratory`s Instrumentation and Controls Division under an internally funded program. The data reported in this paper suggest that acoustic resonance is not a practical method for mine detection. Representative small plastic anti-personnel mines were tested, and were found to not exhibit detectable acoustic resonances. Also, non-metal objects known to have strong acoustic resonances were tested with a variety of excitation techniques, and no practical non-contact method of exciting a consistently detectable resonance in a buried object was discovered. Some of the experimental data developed in this work may be useful to other researchers seeking a method to detect buried plastic mines. A number of excitation methods and their pitfalls are discussed. Excitation methods that were investigated include swept acoustic, chopped acoustic, wavelet acoustic, and mechanical shaking. Under very contrived conditions, a weak response that could be attributed to acoustic resonance was observed, but it does not appear to be practical as a mine detection feature. Transfer properties of soil were investigated. Impulse responses of several representative plastic mines were investigated. Acoustic leakage coupling, and its implications as a disruptive mechanism were …
Date:
April 1, 1998
Creator:
Kercel, S. W.
Object Type:
Article
System:
The UNT Digital Library
Active Sites Environmental Monitoring Program FY 1994 annual report
Chapter III of the US Department of Energy (DOE) Order 5820.2A (DOE 1988) specifies requirements for the management of facilities that were used for the disposal of radioactive solid low-level waste (LLW) on or after the date of the order (September 26, 1988). Activities in Solid Waste Storage Area (SWSA) 6 at Oak Ridge National Laboratory (ORNL) are governed by Chapter III. Chapter II of 5820.2A covers the transuranic (TRU) waste storage areas in SWSA 5 North at ORNL. Both chapters require environmental monitoring to provide early warning of leaks before such leaks pose a threat to human health or the environment. Chapter III also requires the monitoring of LLW disposal facilities so that their performance can be evaluated. In order to comply with this Order, the Environmental Sciences Division (ESD) at ORNL implements the Active Sites Environmental Monitoring Program (ASEMP) for the Radioactive Solid Waste Operations (RSWO) Department within the Waste Management and Remedial Action Division (WMRAD) at ORNL. The scope of the ASEMP includes all ORNL waste disposal sites that were active on or after the date of the Order and that are under the operational control of the RSWO Department of WMRAD. This report continues a series …
Date:
April 1998
Creator:
Morrissey, C. M. & Cunningham, G. R.
Object Type:
Report
System:
The UNT Digital Library
Adhesion of polysilicon microbeams in controlled humidity ambients
The authors characterize in-situ the adhesion of surface micromachined polysilicon beams subject to controlled humidity ambients. Beams were freed by supercritical CO{sub 2} drying. Consistent adhesion results were obtained using a post-treatment in an oxygen plasma which rendered the microbeams uniformly hydrophilic. Individual beam deformations were measured by optical interferometry after equilibration at a given relative humidity (RH). Validation of each adhesion measurement was accomplished by comparing the deformations with elasticity theory. The data indicates that adhesion increases exponentially with RH from 30% to 95%, with values from 1 mJ/m{sup 2} to 50 mJ/m{sup 2}. Using the Kelvin equation, the authors show that the data should be independent of RH if a smooth interface is considered. By modeling a rough interface consistent with atomic force microscopy (AFM) data, the exponential trend is satisfactorily explained.
Date:
April 1, 1998
Creator:
De Boer, M. P.; Clews, P. J.; Smith, B. K. & Michalske, T. A.
Object Type:
Report
System:
The UNT Digital Library
Advanced Emissions Control Development Program
The objective of the Advanced Emissions Control Development Program (AECDP) is to develop practical, cost-effective strategies for reducing the emissions of air toxics from coal-fired boilers. Ideally, the project aim is to effectively control air toxic emissions through the use of conventional flue gas cleanup equipment such as electrostatic precipitators (ESPS), fabric filters (baghouse), and wet flue gas desulfurization. Development work to date has concentrated on the capture of mercury, other trace metals, fine particulate and hydrogen chloride. Following the construction and evaluation of a representative air toxics test facility in Phase I, Phase II focused on the evaluation of mercury and several other air toxics emissions. The AECDP is jointly funded by the United States Department of Energy's Federal Energy Technology Center (DOE), the Ohio Coal Development Office within the Ohio Department of Development (oCDO), and Babcock& Wilcox-a McDermott company (B&W).
Date:
April 1, 1998
Creator:
A.P.Evans; Redinger, K.E. & Holmes, M.J.
Object Type:
Report
System:
The UNT Digital Library
Advanced emissions control development program: Phase 2 final report, February 29, 1996--August 31, 1997. Revision 1
The objective of the advanced emissions control development program (AECDP) is to develop practical, cost-effective strategies for reducing the emissions of air toxics from coal-fired boilers. Ideally, the project aim is to effectively control air toxic emissions through the use of conventional flue gas cleanup equipment such as electrostatic precipitators (ESPs), fabric filters (baghouse), and wet flue gas desulfurization. Development work to date has concentrated on the capture of mercury, other trace metals [antimony, arsenic, barium, cadmium, chromium, cobalt, lead, manganese, nickel, and selenium], fine particulate and hydrogen chloride. Some general comments that can be made about the control of air toxics while burning a high-sulfur bituminous coal are as follows: (1) particulate control devices such as ESP`s and baghouses do a good job of removing non-volatile trace metals; (2) mercury goes through particulate control devices almost entirely uncontrolled; (3) wet scrubbing can effectively remove hydrogen chloride; and (4) wet scrubbers show good potential for the removal of mercury when operated under certain conditions, however additional work is needed to understand the relationship between the wet scrubber`s operating conditions and mercury capture.
Date:
April 1, 1998
Creator:
Evans, A. P.; Holmes, M. J. & Redinger, K. E.
Object Type:
Report
System:
The UNT Digital Library
Advanced Photon Source research: Volume 1, Number 1, April 1998
The following articles are included in this publication: (1) The Advanced Photon Source: A Brief Overview; (2) MAD Analysis of FHIT at the Structural Biology Center; (3) Advances in High-Energy-Resolution X-ray Scattering at Beamline 3-ID; (4) X-ray Imaging and Microspectroscopy of the Mycorrhyizal Fungus-Plant Symbiosis; (5) Measurement and Control of Particle-beam Trajectories in the Advanced Photon Storage Ring; (6) Beam Acceleration and Storage at the Advanced Photon Source; and (7) Experimental Facilities Operations and Current Status.
Date:
April 1, 1998
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Advanced Sulfur Control Concepts in Hot-Gas Desulfurization Technology. Quarterly Report, January 1, 1996--March 31, 1996
The last experimental tests involving FeS regeneration in both the atmospheric pressure and high pressure electrobalance reactors were completed during the quarter. The effects of temperature, reactant composition, and flow rate were studied in the atmospheric pressure electrobalance in atmospheres of O{sub 2}/N{sub 2}, H{sub 2}O/N{sub 2}, and O{sub 2}/H{sub 2}O/N{sub 2}. The same parameters plus pressure were studied in the high pressure electrobalance. Essentially all runs were carried out at volumetric flow rates sufficiently large to eliminate external mass transfer resistance. The initial regeneration rate was found to be a weak function of temperature and to be first-order in both O{sub 2} and H{sub 2}O. In tests involving both O{sub 2} and H{sub 2}O, the initial reaction rate was equal to the sum of the individual rates involving O{sub 2} only and H{sub 2}O only. The effect of pressure on the initial reaction rates in high pressure tests was somewhat unexpected in that the initial rate increased with pressure between 1 and 5 atm, and subsequently decreased between 5 and 15 atm. Statistical analysis and correlation of the electrobalance data have been completed and results are presented in this report. Equations for the initial rate of regeneration of FeS …
Date:
April 1, 1998
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Advances in Modeling of Chemical Vapor Infiltration for Tube Fabrication
The forced flow/thermal gradient chemical vapor infiltration process (FCVI) can be used for fabrication of tube-shaped components of ceramic matrix composites. Recent experimental work at Oak Ridge National Laboratory (ORNL) includes process and materials development studies using a small tube reactor. Use of FCVI for this geometry involves significant changes in fixturing as compared to disk-shaped preforms previously fabricated. The authors have used their computer model of the CVI process to simulate tube densification and to identify process modifications that will decrease processing time. This report presents recent model developments and applications.
Date:
April 1, 1998
Creator:
Starr, T. L.
Object Type:
Report
System:
The UNT Digital Library
Aeroelastic tailoring in wind-turbine blade applications
This paper reviews issues related to the use of aeroelastic tailoring as a cost-effective, passive means to shape the power curve and reduce loads. Wind turbine blades bend and twist during operation, effectively altering the angle of attack, which in turn affects loads and energy production. There are blades now in use that have significant aeroelastic couplings, either on purpose or because of flexible and light-weight designs. Since aeroelastic effects are almost unavoidable in flexible blade designs, it may be desirable to tailor these effects to the authors advantage. Efforts have been directed at adding flexible devices to a blade, or blade tip, to passively regulate power (or speed) in high winds. It is also possible to build a small amount of desirable twisting into the load response of a blade with proper asymmetric fiber lay up in the blade skin. (Such coupling is akin to distributed {delta}{sub 3} without mechanical hinges.) The tailored twisting can create an aeroelastic effect that has payoff in either better power production or in vibration alleviation, or both. Several research efforts have addressed different parts of this issue. Research and development in the use of aeroelastic tailoring on helicopter rotors is reviewed. Potential energy …
Date:
April 1, 1998
Creator:
Veers, P.; Lobitz, D. & Bir, G.
Object Type:
Article
System:
The UNT Digital Library
Affordable Near-term Burning-plasma Experiments
Fusion energy is a potential energy source for the future with plentiful fuel supplies and is expected to have benign environmental impact. The issue with fusion energy has been the scientific feasibility, and recently the cost of this approach. The key technical milestone for fusion is the achievement of a self-sustained fusion fire, ignition, in the laboratory. Despite 40 years of research and the expenditure of almost $20B worldwide, a self-sustained fusion fire has not yet been produced in the laboratory. The fusion program needs a test bed, preferably more than one, where the dynamics of a burning plasma can be studied, optimized and understood so that the engineering requirements for an engineering test reactor can be determined. Engineering and physics concepts must be developed within the next decade that will lead to an Affordable Burning Plasma Experiment if fusion is going to be perceived as making progress toward a potential long-range energy source.
Date:
April 1, 1998
Creator:
Meade, D. M. & Wooley, R. D.
Object Type:
Report
System:
The UNT Digital Library
Age of the Harrison Street Beast: Electron paramagnetic resonance spectra from tooth enamel
Workers doing road reconstruction in 1993 in Fort Wayne, Indiana, uncovered remains of a large skeleton and contacted archaeologists for assessment prior to continuing work. The archaeologists excavated the remains which were located in a 19-cm thick layer of blue glay, a pedological deposit which forms from wet, anaerobic environments associated with bogs. This glay layer was located some 2 meters below the current ground level (Davenport 1996). In this paper, the authors present the results of an EPR analysis of tooth enamel (biogenic hydroxyapatite) from the Harrison Street Beast. The objectives of this study are: (1) determine an age for the specimen through EPR analysis of molar tooth enamel; (2) resolve and identify the radiation sensitive EPR spectral components; and (3) develop a provisional model for the creation of radiation-sensitive components in the EPR spectra.
Date:
April 1, 1998
Creator:
Weeks, R.A.; Elam, J.M.; Davenport, C. & Bogard, J.S.
Object Type:
Report
System:
The UNT Digital Library
The Age, Volume 21, Number 4, April 1998
Monthly publication containing information related to Chambers County, Texas, including current events of the Chambers County Historical Commission, the Wallisville Heritage Park, and the Chambers County historical and genealogical societies; reprinted newspaper articles about county events and citizens; and historical news and records.
Date:
April 1998
Creator:
Wallisville Heritage Park (Organization)
Object Type:
Journal/Magazine/Newsletter
System:
The Portal to Texas History
ALARA plan for the Old Hydrofracture Facility tanks contents removal project at Oak Ridge National Laboratory, Oak Ridge, Tennessee
The purpose of the Old Hydrofracture Facility (OHF) Tanks Contents Removal Project is to remove the liquid low-level waste from the five underground storage tanks located at OHF and transfer the resulting slurry to the Melton Valley Storage Tanks facility for treatment and disposal. Among the technical objectives for the OHF Project, there is a specific provision to maintain personnel exposures as low as reasonably achievable (ALARA) during each activity of the project and to protect human health and the environment. The estimated doses and anticipated conditions for accomplishing this project are such that an ALARA Plan is necessary to facilitate formal radiological review of the campaign. This ALARA Plan describes the operational steps necessary for accomplishing the job together with the associated radiological impacts and planned controls. Individual and collective dose estimates are also provided for the various tasks. Any significant changes to this plan (i.e., planned exposures that are greater than 10% of original dose estimates) will require formal revision and concurrence from all parties listed on the approval page. Deviations from this plan (i.e., work outside the scope covered by this plan) also require the preparation of a task-specific ALARA Review that will be amended to this …
Date:
April 1, 1998
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Alaska Power Administration combined financial statements, schedules, and supplemental reports, September 30, 1997 and 1996 with independent auditors` report thereon
The Alaska Power Administration (APA) will continue to encourage economic and industrial development in Alaska through implementing the sale of APA assets in a manner consistent with the authorizing legislation while balancing all the stakeholders` interests. Alaska Power Administration will provide their employees opportunities for successful career transitions and conduct an efficient transfer of assets and closeout of APA, while continuing to provide customers reliable, low-cost hydroelectric energy during the transition. The attached report presents the results of the independent certified public accounts` audit of the Alaska Power Administration`s (APA) combined power system statements of assets; Federal investment and liabilities; and the related combined statements of revenues, expenses and accumulated net revenues, and cash flows. The auditors` reports on APA`s internal control structure and compliance with laws and regulations disclosed no reportable conditions or instances of noncompliance. Based on the unqualified opinion of the independent public accounting firm of KPMG Peak Marwick LLP and review of their audit work, the authors believe the financial statements fairly present the financial condition and results of the operations of APA for the period under audit.
Date:
April 1, 1998
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
[Alliance Notes April 1998 newsletter of the Dallas Gay and Lesbian Alliance]
April 1998 issue of the Alliance Notes newsletter published by the Dallas Gay and Lesbian Alliance.
Date:
April 1998
Creator:
Dallas Gay and Lesbian Alliance
Object Type:
Journal/Magazine/Newsletter
System:
The UNT Digital Library
Along scenic Hill Country backroads discover ... Mason County Blue, or Mason County: Hill Country Gem
Draft of an article about Mason County, Texas that was published in the April 1998 issue of Texas Highways magazine.
Date:
1998-04~
Creator:
Mallory, Randy
Object Type:
Text
System:
The UNT Digital Library
Altus Times (Altus, Okla.), Vol. 99, No. 16, Ed. 1 Wednesday, April 1, 1998
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
April 1, 1998
Creator:
Cole, Carol
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Alvin Advertiser (Alvin, Tex.), Ed. 1 Wednesday, April 1, 1998
Weekly newspaper from Alvin, Texas that includes local, state, and national news along with advertising.
Date:
April 1, 1998
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History