Search Results

Advanced search parameters have been applied.
open access

A co-metabolic approach to groundwater remediation

Description: In support of the US Department of Energy's (DOE) Integrated Demonstration (Cleanup of Organics in Soils and Groundwater at Non-arid Sites) at the Savannah River Site (SRS), Oak Ridge National Laboratory (ORNL) and the University of Tennessee (UT) are involved in demonstrations of the use of methanotrophs in bioreactors for remediation of contaminated groundwater. In preparation for a field demonstration at ORNL's K-25 Site in Oak Ridge, Tennessee, ORNL is conducting batch experiments, is opera… more
Date: January 1, 1991
Creator: Palumbo, A. V.; Boerman, P. A.; Strandberg, G. W.; Donaldson, T. L.; Jennings, H. L.; Lucero, A. J. et al.
Partner: UNT Libraries Government Documents Department
open access

Measurements of surface ocean carbon dioxide partial pressure during WOCE

Description: Progress during the past year of research under Measurements of Surface Ocean Carbon Dioxide Partial Pressure During WOCE'' has been significant. As was described in our previous progress report, the startup phase of this research was severely frustrated by delays in the US WOCE Hydrographic Program (WHP), which in turn were caused by delays in the mid-life refit of the R/V Knorr. As a result the high latitude southeastern Pacific work (WHP lines P19S and P16S) originally scheduled for the 1990… more
Date: February 25, 1992
Creator: Weiss, R.F.
Partner: UNT Libraries Government Documents Department
open access

Investigation of carbon dioxide in the South Atlantic and northern Weddell Sea areas (WOCE Sections A-12 and A-21) during the METEOR expedition 11/5, January--March 1990

Description: This report summarizes the results of investigation the oceanographic expedition aboard the F/S METEOR in South Atlantic Ocean including the Drake Passage, the northern Weddell Sea and the eastern South Atlantic during the austral summer of January through March 1990. The total CO{sub 2} concentration in about 1300 seawater samples and CO{sub 2} partial pressure (pCO{sub 2}) in about 870 seawater samples collected at 77 stations were determined aboard the ship using a coulometer and equilibrato… more
Date: December 1, 1991
Creator: Chipman, D.W.; Takahashi, Taro; Breger, D. & Sutherland, S.C.
Partner: UNT Libraries Government Documents Department
open access

The influence of interfacial properties on two-phase liquid flow of organic contaminants in groundwater

Description: The purpose of this project is to investigate how changes in interfacial chemical properties affect two-phase transport relationships. Specifically, the objective is to develop a quantitative theory that will enable the prediction of changes in the capillary pressure-saturation relationship, a fundamental constitutive relationship in multiphase flow modeling, from changes in interfacial properties through a knowledge of their effect on wettability. The information presented here summarizes the … more
Date: September 1, 1990
Creator: Hayes, K.F. & Demond, A.H.
Partner: UNT Libraries Government Documents Department
open access

Chestnut Ridge Sediment Disposal Basin (D-025): Summary of closure under Rules Governing Hazardous Waste Management in Tennessee

Description: On February 29, 1988, the Revised Closure Plan for Chestnut Ridge Sediment Disposal Basin,'' Y/TS-390 (Reference 1) was submitted to the United States Department of Energy (DOE) for review and transmittal to the Tennessee Department of Health and Environment (TDHE). The closure activities described in the closure plan have been performed. The purpose of this document is to summarize the closure activities for the Chestnut Ridge Sediment Disposal (CRSDB). The closure of CRSDB is a final closure.… more
Date: July 1, 1989
Creator: Stone, J. E.
Partner: UNT Libraries Government Documents Department
open access

Reactive Chemical Transport in Ground-Water Hydrology: Challenges to Mathematical Modeling

Description: For a long time, earth scientists have qualitatively recognized that mineral assemblages in soils and rocks conform to established principles of chemistry. In the early 1960's geochemists began systematizing this knowledge by developing quantitative thermodynamic models based on equilibrium considerations. These models have since been coupled with advective-dispersive-diffusive transport models, already developed by ground-water hydrologists. Spurred by a need for handling difficult environment… more
Date: July 1, 1990
Creator: Narasimhan, T. N. & Apps, J. A.
Partner: UNT Libraries Government Documents Department
open access

Johnsonville Fossil Plant (JOF): Supplement to the environmental assessment (EA) for the new ash dredge pond

Description: In 1989, TVA prepared an EA for development of a new ash dredge pond at JOF. On June 19, 1990, a Finding of No Significant Impact (FONSI) was released which indicated that the project was not considered to be a major federal action significantly affecting the quality of the environment. Since the original EA for this project considered the environmental impacts of only the first phase of construction, the purpose of this supplement is to consider any additional impacts associated with the secon… more
Date: January 1, 1990
Partner: UNT Libraries Government Documents Department
open access

Preliminary field demonstration of a fiber-optic TCE sensor. [Trichloroethylene (TCE)]

Description: We have developed a differential-absorption fiber-optic sensor for use in groundwater and vadose zone monitoring of certain volatile organochlorines. The principle of detection is a quantitative, irreversible chemical reaction that forms visible light-absorbing products. The sensor has been evaluated against gas chromatographic (GC) standard measurements and has demonstrated accuracy and sensitivity sufficient for the environmental monitoring of trace levels of trichloroethylene (TCE) and chlor… more
Date: February 1, 1991
Creator: Angel, S.M.; Langry, K.; Roe, J.; Colston, B.W. Jr.; Daley, P.F. & Milanovich, F.P.
Partner: UNT Libraries Government Documents Department
open access

An evaluation of the use of an advanced oxidation process to remove chlorinated hydrocarbons from groundwater at the US Department of Energy Kansas City Plant

Description: The Allied-Signal Aerospace Company currently operates a production facility in Kansas City, Missouri, under contract with the US Department of Energy (DOE). Over the years the operation of the DOE Kansas City Plant has resulted in the contamination of groundwater with chlorinated hydrocarbons, including trichloroethene (TCE). One of the plumes of contaminated groundwater, the underground tank farm (UTF) plume, was selected for remediation with an advanced oxidation process (AOP) consisting of … more
Date: October 1, 1990
Creator: Garland, S. B., II & Peyton, G. R.
Partner: UNT Libraries Government Documents Department
open access

Stochastic analysis of contaminant transport: One-dimensional non-reactive and reactive cases

Description: A reliability approach for probabilistic modeling of one-dimensional non-reactive and reactive transport in porous media provides two important quantitative results: (1) an estimate of the probability that dimensionless concentration equals or exceeds some specified level and, (2) the sensitivity of the probabilistic outcome to likely changes in each uncertain variable. The reliability approach is particularly attractive because it can incorporate various marginal probability density functions … more
Date: December 3, 1990
Creator: Cawlfield, J.D. & Wu, Ming-Chee.
Partner: UNT Libraries Government Documents Department
open access

Master Environmental Plan: Fort Wingate Depot Activity, Gallup, New Mexico

Description: The master environmental plan is based on an environmental assessment of the areas requiring environmental evaluation (AREEs) at Fort Wingate Depot Activity near Gallup, New Mexico. The Fort Wingate Depot Activity is slated for closure under the Base Closure and Realignment Act, Public Law 100--526. The MEP assesses the current status, describes additional data requirements, recommends actions for the sites, and establishes a priority order for actions. The plan was developed so that actions co… more
Date: December 1, 1990
Creator: Biang, C. A.; Yuen, C. R.; Biang, R. P.; Antonopoulos, A. A. & Ditmars, J. D.
Partner: UNT Libraries Government Documents Department
open access

Ecological evaluation of proposed discharge of dredged material from Oakland Harbor into ocean waters (Phase 2 of -42-foot project)

Description: The US Army Corps of Engineers (USACE), San Francisco District, was authorized by the Water Resources Development Act of 1986 to deepen and widen the navigation channels of Inner and Outer Oakland Harbor, California, to accommodate modern deep-draft vessels. The recommended plan consists of deepening the harbor channels from the presently authorized water depth of {minus}35 ft mean lower low water (MLLW) to {minus}42 ft MLLW and supplying the harbor with adequate turning basins and berthing are… more
Date: September 1, 1990
Creator: Word, J.Q.; Ward, J.A.; Strand, J.A.; Kohn, N.P. & Squires, A.L. (Battelle Marine Research Lab., Sequim, WA (USA))
Partner: UNT Libraries Government Documents Department
open access

Naturally occurring arsenic in the groundwater at the Kansas City Plant

Description: This report describes an investigation concerning the presence of arsenic in concentrations exceeding 0.4 mg/L in the groundwater under the Department of Energy's Kansas City Plant (KCP). The study consisted of four distinct phases: a thorough review of the technical literature, a historical survey of arsenic use at the facility, a laboratory study of existing techniques for determining arsenic speciation, and a field program including water, soil, and sediment sampling. The historical survey a… more
Date: December 1, 1990
Creator: Korte, N. E.
Partner: UNT Libraries Government Documents Department
open access

Measurements of the total CO[sub 2] concentration and partial pressure of CO[sub 2] in seawater during WOCE expeditions in the South Pacific Ocean

Description: During the first year of the grant, we participated in three WOCE expeditions (a total of 152 days at sea) in the South Pacific Ocean, and the field phase of the proposed investigation has been successfully completed. The total CO[sub 2] concentration and pCO[sub 2] were determined at sea in 4419 water samples collected at 422 stations. On the basis of the shipboard analyses of SIO Reference Solutions for CO, and a comparison with the results of previous expeditions, the overall precision of ou… more
Date: June 29, 1993
Creator: Takahashi, T.; Goddard, J. G.; Chipman, D. W. & Rubin, S. I.
Partner: UNT Libraries Government Documents Department
open access

Separations areas effluent treatment: The preparation of a simulated effluent for system development and testing

Description: A fundamental parameter in the design of the Effluent Treatment Facility (ETF), the effluent composition, has recently been investigated by analyzing samples from both separations areas. As a result of this characterization program, we can now project the composition of the ETF feed stream. The anticipated feed composition is presented here for the purpose of making system projections; and a formula is provided for a simulant to use in testing evaporation, filtration, and reverse osmosis (RO) e… more
Date: February 8, 1984
Creator: Ryan, J.P.
Partner: UNT Libraries Government Documents Department
open access

Limited site investigation of Landfills 1 and 4, Fort Lewis, Washington

Description: The information presented in this report was collected during limited site investigation activities conducted in the vicinity of Landfills 1 and 4 at Fort Lewis. The purpose of this work was to provide a means of detecting and evaluating the impacts of these inactive landfills on ground-water quality and adjacent lands. This effort included the design and construction of ground-water monitoring systems for compliance with applicable federal and state regulations governing Resource Conservation … more
Date: August 1, 1990
Creator: Last, G.V.; Eddy, P.A.; Airhart, S.P.; Olsen, K.R.; Raymond, J.R. & Dahl, D.R.
Partner: UNT Libraries Government Documents Department
open access

California Basin study (CaBS): DOE west coast basin program

Description: The overall objective of our research continues to be elucidation of the transport pathways and transformations of organic matter in the California Basins region, with particular reference to the role of macrozooplankton in upper waters. We have concentrated on C and N pathways and fluxes to data, and will continue to investigate these further (seasonal aspects, and the role of zooplankton carnivory in zooplankton-medicated C and N flux, for example).
Date: January 1, 1990
Creator: Small, L .F.
Partner: UNT Libraries Government Documents Department
open access

Stochastic analysis of contaminant transport

Description: A reliability algorithm is used to develop probabilistic (stochastic) models or contaminant transport in porous media. The models are based on advective-dispersive transport equations, and utilize the reliability algorithm with existing one- and two-dimensional analytical and numerical solutions. Uncertain variables in the models include: groundwater flow velocity (or permeability in the numerical model), dispersivity, diffusion coefficient, bulk density, porosity, and solute distribution coeff… more
Date: February 1, 1992
Creator: Cawlfield, J.D.
Partner: UNT Libraries Government Documents Department
open access

Oceanic CO sub 2 measurements for the WOCE hydrological survey in the Pacific Ocean; Shipboard alkalinity analyses during 1991 and 1992

Description: The DOE Carbon Dioxide Science Team is contributing measurements of the carbon system in sea water on transects of the WOCE Hydrological Survey sponsored by the United States. This project is to provide measurements of titration alkalinity of sea water, an effort that is in addition to our collecting samples of sea water brought back to our shore laboratory and analyzed for dissolved inorganic carbon (DIC) and alkalinity. Our original proposal called for approximately 1200 analyses at sea in 19… more
Date: January 1, 1992
Creator: Keeling, C.D.
Partner: UNT Libraries Government Documents Department
open access

Research and development for DOE environmental restoration and waste management

Description: The US Department of Energy (DOE) recently consolidated its environmental restoration and waste management activities. Within that new organization, DOE has committed to support Research, Development, Demonstration, Testing and Evaluation (RDDT E) activities with the following objectives: rapidly advance beyond currently available technologies; provide solutions to key technical issues that will improve effectiveness, efficiency, and safety; and enhance DOE's ability to meet its 30-year complia… more
Date: January 1, 1991
Creator: Erickson, M.D.; Borys, S.S.; Bugielski, D. (Argonne National Lab., IL (USA)); Lien, S.C.T. & Hain, K.E. (USDOE Office of Environmental Restoration and Waste Management, Washington, DC (USA). Div. of Research and Development)
Partner: UNT Libraries Government Documents Department
open access

Groundwater quality assessment plan for the Metallurgical Laboratory Hazardous Waste Management Facility

Description: The Metallurgical Laboratory Hazardous Waste Management Facility (MLHWMF) will be closed under interim status regulation and permitted as a hazardous waste management facility by a Post Closure Part B Permit under 40 CFR 264. This report discusses the ground water quality assessment plan for the MLHWMF. The Metallurgical Laboratory Hazardous Waste Management Facility consists of the process sewer line leading to the Metallurgical Laboratory basin from the fence, the Metallurgical Laboratory bas… more
Date: October 1, 1990
Creator: Jerome, K. M.
Partner: UNT Libraries Government Documents Department
open access

Colloids in groundwater: Their mobilization, subsurface transport, and sorption affinity for toxic chemicals

Description: During the initial project period, we have pursued several activities with the overall goal of characterizing the roles of colloid in groundwater. First, we have collected soil cores from a site where we have previously found large quantities of kaolinite colloids in the groundwater. We have intensely investigated these cores to test our hypothesis that the colloids have been mobilized as a result of iron oxide dissolution. Next, we have constructed a soil core system in our laboratory with whi… more
Date: January 1, 1991
Partner: UNT Libraries Government Documents Department
open access

Strategy for conducting environmental surveillance of groundwater to comply with DOE orders

Description: This document defines the strategy for conducting environmental surveillance of groundwater quality at Department of Energy (DOE) installations as it will be implemented by Martin Marietta Energy Systems, Inc. The primary objectives of defining this generic strategy prior to developing site-specific plans are to: clearly differentiate between effluent monitoring and environmental surveillance as they apply to groundwater, describe the principles and concepts of groundwater flow that must be con… more
Date: December 1, 1990
Creator: Forstrom, J.M.
Partner: UNT Libraries Government Documents Department
open access

Metal Cation/Anion Adsorption on Calcium Carbonate: Implications to Metal Ion Concentrations in Groundwater

Description: This chapter evaluates the sorption behavior of metallic ions on specimen calcite as a basis for determining the importance of calcite relative to other subsurface sorbents, such as layer silicates and oxides, in controlling metal ion concentration in calcareous groundwaters. A review of the literature shows the sorption of both metallic cations and anions on calcite over ranges in pH and CO{sub 2} partial pressure to be consistent with a surface-exchange process where cations exchange with sur… more
Date: May 1, 1990
Creator: Zachara, J. M.; Cowan, C. E. & Resch, C. T.
Partner: UNT Libraries Government Documents Department
Back to Top of Screen