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Air Quality: EPA's Proposed New Ozone and Particulate Matter Standards

Description: This report discusses the contentious issue of enforcing stringent national ambient air quality standards (NAAQS) for ozone and particulate matter (PM), the opponents of which decry as harmful to the economy. The report discusses actions undertaken by the EPA, President Clinton's support of the NAAQSs, and the criticisms of opponents.
Date: June 27, 1997
Creator: Blodgett, John E.; Parker, Larry & McCarthy, James E.
Item Type: Refine your search to only Report
open access

NAFTA: Economic Effects on the United States After Three Years

Description: The main economic benefit of the North American Free Trade Agreement (NAFTA) is that, over time, it is expected to increase productivity and incomes in the United States, Mexico and Canada. In the near term, some reallocation of resources occurs within each country, generating gains for some producers and workers and costs for others. Since the Mexican and Canadian economies are small relative to the U.S. economy, both the long-term benefits and short-term adjustment costs of the NAFTA to the U… more
Date: June 13, 1997
Creator: Wilson, Arlene
Item Type: Refine your search to only Report
open access

Enhanced sludge processing of HLW: Hydrothermal oxidation of chromium, technetium, and complexants by nitrate. 1997 mid-year progress report

Description: 'Treatment of High Level Waste (HLW) is the second most costly problem identified by OEM. In order to minimize costs of disposal, the volume of HLW requiring vitrification and long term storage must be reduced. Methods for efficient separation of chromium from waste sludges, such as the Hanford Tank Wastes (HTW), are key to achieving this goal since the allowed level of chromium in high level glass controls waste loading. At concentrations above 0.5 to 1.0 wt.% chromium prevents proper vitrific… more
Date: June 1, 1997
Creator: Buelow, S.
Item Type: Refine your search to only Report
open access

Rayleigh-taylor instability growth experiments in a cylindrically convergent geometry

Description: Convergent geometry Rayleigh-Taylor experiments have been performed with a 122-point detonation initiation system on cylinders having sinusoidal perturbations on the outer surface ranging from mode-6 to mode-36. Experiments were performed with various perturbation mode numbers, perturbation amplitudes, and ring accelerations. Feedthrough perturbation growth on the inner surface was observed in several experiments, and in one experiment the feed through perturbation underwent a phase inversion. … more
Date: June 11, 1997
Creator: Weir, S. T., LLNL
Item Type: Refine your search to only Article
open access

Crystallization pathway in the bulk metallic glass Zr{sub 41.2}Ti{sub 13.8}Cu{sub 12.5}Ni{sub 10}Be{sub 22.5}.

Description: A new family of multicomponent metallic alloys exhibits an excellent glass forming ability at moderate cooling rates of about 10K/s and a wide supercooled liquid region. These glasses are eutectic or nearly eutectic, thus far away from the compositions of competing crystalline phases. The nucleation of crystals from the homogeneous amorphous phase requires large thermally activated composition fluctuations for which the time scale is relatively long, even in the supercooled liquid. In the Zr{su… more
Date: June 24, 1997
Creator: Geyer, U.; Johnson, W. L.; Schneider, S. & Thiyagarajan, P.
Item Type: Refine your search to only Article
open access

C02 Huff-n-Puff Process in a Light Oil shallow Shelf Carbonate Reservoir

Description: The principal objective of this CO2 Huff-n-Puff (H-n-P) project is to determine the feasibility and practicality of the technology in a waterflooded shallow shelf carbonate environment. The results of parametric simulation of the CO2 H-n-P process, coupled with the Central Vacuum Unit (CVU) reservoir characterization components will be used to determine if this process is technically and economically feasible for field implementation. The technology transfer objective of the project is to disse… more
Date: June 30, 1997
Creator: Kovar, Mark & Wehner, Scott
Item Type: Refine your search to only Report
open access

Molecular-level processes governing the interaction of contaminants with iron and manganese oxides. 1997 annual progress report

Description: 'The central tenet of this proposal is that a fundamental understanding of specific mineral surface-site reactivities will substantially improve reactive transport models of contaminants in geologic systems, and will allow more effective remediation schemes to be devised. Most large-scale, macroscopic models employ global chemical reaction kinetics and thermochemistry. However, such models do not incorporate molecular-level input critical to the detailed prediction of how contaminants interact … more
Date: June 1, 1997
Creator: Chambers, S.A. & Brown, G.
Item Type: Refine your search to only Report
open access

Hazards Control Department 1996 Annual Report

Description: This annual report on the activities of the Hazards Control Department (HCD) in 1996 is part of the department's continuing effort to foster a working environment at Lawrence Livermore National Laboratory where every person has the means, ability, and desire to work safely. The significant accomplishments and activities, the various services provided, and research into Environment, Safety, and Health (ES&H) issues by HCD would not have been possible without the many and ongoing contributions by… more
Date: June 30, 1997
Creator: Richards, J.
Item Type: Refine your search to only Report
open access

Mechanism involved in trichloroethylene-induced liver cancer: Importance to environmental cleanup. 1997 annual progress report

Description: 'The Pacific Northwest National Lab. was awarded ten (10) Environmental Management Science Program (EMSP) research grants in Fiscal Year 1996. This section gives a summary of how each grant is addressing significant DOE cleanup issues, including those at the Hanford Site. The technical progress made to date in each of these research projects is addressed in more detail in the individual progress reports contained in this document. This research is primarily focused in three areas-Tank Waste Rem… more
Date: June 1, 1997
Creator: Bull, R.J.
Item Type: Refine your search to only Report
open access

Architectural design criteria for f-block metal sequestering agents. 1997 annual progress report

Description: 'The objective of this project is to provide the means to optimize ligand architecture for f-block metal recognition. The authors strategy builds on an innovative and successful molecular modeling approach in developing polyether ligand design criteria for the alkali and alkaline earth cations. The hypothesis underlying this proposal is that differences in metal ion binding with multidentate ligands bearing the same number and type of donor groups are primarily attributable to intramolecular st… more
Date: June 1, 1997
Creator: Hay, B.P.; Paine, R.T. & Roundhill, D.M.
Item Type: Refine your search to only Report
open access

Interfacial radiolysis effects in tank waste speciation. 1997 annual progress report

Description: 'The purpose of this program is to deliver pertinent, fundamental information that can be used to make technically defensible decisions on safety issues and processing strategies associated with mixed chemical and radioactive waste cleanup. In particular, an understanding of radiolysis in mixed-phase systems typical of U. Department of Energy (DOE) heterogeneous, radioactive/chemical wastes will be established. This is an important scientific concern with respect to understanding tank waste che… more
Date: June 1, 1997
Creator: Orlando, T.M.
Item Type: Refine your search to only Report
open access

High fluence neutron source for nondestructive characterization of nuclear materials. 1997 mid-year progress report

Description: 'The author is addressing the need to measure nuclear wastes, residues, and spent fuel in order to process these for final disposition. For example, TRU wastes destined for the WIPP must satisfy extensive characterization criteria outlined in the Waste Acceptance Criteria, the Quality Assurance Program Plan, and the Performance Demonstration Plan. Similar requirements exist for spent fuel and residues. At present, no nondestructive assay instrumentation is capable of satisfying all of the PDP t… more
Date: June 1, 1997
Creator: Pickrell, M.M.
Item Type: Refine your search to only Report
open access

Chemical Speciation of Strontium, Americium, and Curium in High-level Waste: Predictive Modeling of Phase Partitioning during Tank Processing. 1997 Annual Progress Report

Description: 'In this research program, Pacific Northwest National Laboratory (PNNL) and Florida State University (FSU) are investigating the speciation of Sr and Am/Cm in the presence of selected organic chelating agents (ethylenediaminetetraacetic acid (EDTA), N-(2-hydroxyethyl) ethylenediaminetriacetic acid (HEDTA), nitrilotriacetic acid (NTA), and iminodiacetic acid (IDA)) over ranges of hydroxide, carbonate, and ionic strength conditions present in high-level waste tanks. This fundamental understanding… more
Date: June 1, 1997
Creator: Felmy, A. R. & Choppin, G. R.
Item Type: Refine your search to only Report
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