106 Matching Results

Search Results

Advanced search parameters have been applied.
in subjects: "Aquifers"  
Results: 1 - 24 next
open access

Relationship of regional water quality to aquifer thermal energy storage

Description: Ground-water quality and associated geologic characteristics may affect the feasibility of aquifer thermal energy storage (ATES) system development in any hydrologic region. This study sought to determine the relationship between ground-water quality parameters and the regional potential for ATES system development. Information was collected from available literature to identify chemical and physical mechanisms that could adversely affect an ATES system. Appropriate beneficiation techniques to … more
Date: November 1, 1983
Creator: Allen, R.D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

FEWA: a Finite Element model of Water flow through Aquifers

Description: This report documents the implementation and demonstration of a Finite Element model of Water flow through Aquifers (FEWA). The particular features of FEWA are its versatility and flexibility to deal with as many real-world problems as possible. Point as well as distributed sources/sinks are included to represent recharges/pumpings and rainfall infiltrations. All sources/sinks can be transient or steady state. Prescribed hydraulic head on the Dirichlet boundaries and fluxes on Neumann or Cauchy… more
Date: November 1, 1983
Creator: Yeh, G.T. & Huff, D.D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

CFEST Coupled Flow, Energy & Solute Transport Version CFEST005 Theory Guide

Description: This document presents the mathematical theory implemented in the CFEST (Coupled Flow, Energy, and Solute Transport) simulator. The simulator is a three-dimensional finite element model that can be used for evaluating flow and solute mass transport. Although the theory for thermal transport is presented in this guide, it has not yet been fully implemented in the simulator. The flow module is capable of simulating both confined and unconfined aquifer systems, as well as constant and variable den… more
Date: November 1, 2005
Creator: Freedman, Vicky L.; Chen, Yousu & Gupta, Sumant K.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

TREATABILITY TEST FOR REMOVING TECHNETIUM-99 FROM 200-ZP-1 GROUNDWATER HANFORD SITE

Description: The 200-ZP-1 Groundwater Operable Unit (OU) is one of two groundwater OUs located within the 200 West groundwater aggregate area of the Hanford Site. The primary risk-driving contaminants within the 200-ZP-1 OU include carbon tetrachloride and technetium-99 (Tc-99). A pump-and-treat system for this OU was initially installed in 1995 to control the 0.002 kg/m{sup 3} (2000 {micro}g/L) contour of the carbon tetrachloride plume. Carbon tetrachloride is removed from groundwater with the assistance o… more
Date: November 29, 2007
Creator: SW, PETERSEN; AC, TORTOSO; WS, ELLIOTT & ME, BYRNES
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Interim Measure Conceptual Design for Remediation at the Former CCC/USDA Grain Storage Facility at Centralia, Kansas: Pilot Test and Remedy Implementation.

Description: This document presents an Interim Measure Work Plan/Design for the short-term, field-scale pilot testing and subsequent implementation of a non-emergency Interim Measure (IM) at the site of the former grain storage facility operated by the Commodity Credit Corporation of the U.S. Department of Agriculture (CCC/USDA) in Centralia, Kansas. The IM is recommended to mitigate both (1) localized carbon tetrachloride contamination in the vadose zone soils beneath the former facility and (2) present (a… more
Date: November 9, 2007
Creator: LaFreniere, L. M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Numerical Modeling Studies of The Dissolution-Diffusion-Convection ProcessDuring CO2 Storage in Saline Aquifers

Description: For purposes of geologic storage, CO2 would be injected into saline formations at supercritical temperature and pressure conditions, and would form a separate phase that is immiscible with the aqueous phase (brine). At typical subsurface temperature and pressure conditions, supercritical CO2 (scCO2) has lower density than the aqueous phase and would experience an upward buoyancy force. Accordingly, the CO2 is expected to accumulate beneath the caprock at the top of the permeable interval, and c… more
Date: November 17, 2008
Creator: Pruess, Karsten & Zhang, Keni
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

TECHNICAL EVALUATION OF THE INTERACTION OF GROUNDWATER WITH THE COLUMBIA RIVER AT THE DEPARTMENT OF ENERGY HANFORD SITE 100-D AREA

Description: Groundwater beneath much of Hanford's 100 Areas is contaminated with hexavalent chromium (Cr{sup +6}) as a consequence of treating reactor cooling water to prevent corrosion. Several treatment systems are in place to remove Cr{sup +6} from the groundwater; however, these systems currently do not reduce Cr{sup +6} to concentrations below aquatic standards. Of concern is the transport of Cr{sup +6} to areas within the channel of the river, as sensitive species inhabit the river and its associated… more
Date: November 5, 2008
Creator: SW, PETERSEN
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Interim Measure Work Plan/Design for Agra, Kansas.

Description: This Interim Measure Work Plan/Design (IMWP/D) is supplemental to the Argonne document Interim Measure Conceptual Design for Remediation of Source Area Contamination at Agra, Kansas. The IMWP/D includes information required by Kansas Department of Health and Environment (KDHE) Policy BER-RS-029, Policy and Scope of Work for Interim Measures. Specific to Policy BER-RS-029 is the requirement for several documents that will ensure that an adequate amount and type of data are collected for implemen… more
Date: November 18, 2008
Creator: LaFreniere, L. M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Revisiting the Cape Cod Bacteria Injection Experiment Using a Stochastic Modeling Approach

Description: Bromide and resting-cell bacteria tracer tests carried out in a sand and gravel aquifer at the USGS Cape Cod site in 1987 were reinterpreted using a three-dimensional stochastic approach and Lagrangian particle tracking numerical methods. Bacteria transport was strongly coupled to colloid filtration through functional dependence of local-scale colloid transport parameters on hydraulic conductivity and seepage velocity in a stochastic advection-dispersion/attachment-detachment model. Information… more
Date: November 22, 2006
Creator: Maxwell, R M; Welty, C & Harvey, R W
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Final Work Plan: Investigation of Potential Contamination at the Former CCC/Usda Grain Storage Facility in Hanover, Kansas.

Description: The Commodity Credit Corporation (CCC), an agency of the U.S. Department of Agriculture (USDA), operated a grain storage facility at the northeastern edge of the city of Hanover, Kansas, from 1950 until the early 1970s. During this time, commercial grain fumigants containing carbon tetrachloride were in common use by the grain storage industry to preserve grain in their facilities. In February 1998, trace to low levels of carbon tetrachloride (below the maximum contaminant level [MCL] of 5.0 {m… more
Date: November 19, 2008
Creator: LaFreniere, L. M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Removal of Iodide From Groundwater Using Silver Chloride-White Paper

Description: Releases from the F and H Area Seepage Basins on the Savannah River Site (SRS) have caused groundwater plumes that contain a variety of contaminants. These plumes are releasing contaminants into Fourmile Branch, which is a small tributary of the Savannah River. The metallic contaminant releases to the branch are being controlled by base injection. The base injection targets cationic contaminants and was not intended to reduce the concentration of I-129 in groundwater. SRS and the regulatory age… more
Date: November 26, 2008
Creator: Denham, M.; Bach, M. & Millings, M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Large-scale impact of CO2 storage in deep saline aquifers: A sensitivity study on pressure response in stratified systems

Description: Large volumes of CO{sub 2} captured from carbon emitters (such as coal-fired power plants) may be stored in deep saline aquifers as a means of mitigating climate change. Storing these additional fluids may cause pressure changes and displacement of native brines, affecting subsurface volumes that can be significantly larger than the CO{sub 2} plume itself. This study aimed at determining the three-dimensional region of influence during/after injection of CO{sub 2} and evaluating the possible im… more
Date: November 1, 2008
Creator: Birkholzer, J.T.; Zhou, Q. & Tsang, C.-F.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Results of groundwater monitoring at Everest, Kansas, in April 2008.

Description: On September 7, 2005, the Commodity Credit Corporation of the U.S. Department of Agriculture (CCC/USDA) presented a Scoping Memo (Argonne 2005) for preliminary consideration by the Kansas Department of Health and Environment (KDHE), suggesting possible remedial options for the carbon tetrachloride contamination in groundwater at Everest, Kansas. The suggested approaches were discussed by representatives of the KDHE, the CCC/USDA, and Argonne at the KDHE office in Topeka on September 8-9, 2005, … more
Date: November 5, 2008
Creator: LaFreniere, L. M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Results of the separations area ground-water monitoring network for 1980

Description: The monitoring program for assessing ground-water quality under low-level radioactive disposal facilities is based upon an understanding of the hydrology of this area. Knowledge of the ground-water flow system predicates well location, well completion, and sampling frequency. There were seven active cribs, and four active ponds and associated active ditches in 1980. The 216-A-3 Crib and the 216-S-11 Ditch are not monitored because they receive minor discharges. In 1980, concentrations of radion… more
Date: November 1, 1981
Creator: Graham, M. J. & Brown, W. R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Evaluation of Hanford site water-table changes, 1980--1990

Description: Irrigation applied west of the Hanford Site and wastewater management practices on the Hanford Site resulted in significant changes in the configuration of the water table between December 1979 and December 1989. In the Cold Creek Valley, located in the western part of the Hanford Site, the water table rose more than 3 m (9 ft) between December 1979 and December 1989. Since 1969, the water table in the Cold Creek Valley has been rising, primarily in response to irrigation practices in the Upper… more
Date: November 1, 1990
Creator: Newcomer, D.R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Geothermal potential of West-Central New Mexico from geochemical and thermal gradient data

Description: To study the low temperature and Hot Dry Rock (HDR) geothermal potential of west-central New Mexico, 46 water samples were collected and geothermal gradient measurements were made in 29 wells. Water chemistry data indicate that all the samples collected are meteoric waters. High temperatures of samples taken from wells between Gallup and Tohatchi indicate these wells may derive water from a warm aquifer below the depth of the wells. The chemistries of the samples farther south on the Zuni India… more
Date: November 1, 1980
Creator: Levitte, D. & Gambill, D.T.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Theoretical studies in long-term thermal energy storage in aquifers

Description: One of the most promising methods for long-term thermal energy storage is the use of underground aquifers. LBL studies in this field are described. These theoretical studies were carried out in two directions: basic or generic studies to understand the fundamental thermohydrologic processes and to identify key parameters; and site-specific modeling studies to understand experimental observations and to simulate or predict field results. As a result of this work and similar work by other researc… more
Date: November 1, 1980
Creator: Tsang, C. F.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Semi-annual report for the unconventional gas recovery program, period ending September 30, 1980

Description: Progress is reported in research on methane recovery from coalbeds, eastern gas shales, western gas sands, and geopressured aquifers. In the methane from coalbeds project, data on information evaluation and management, resource and site assessment and characterization, model development, instrumentation, basic research, and production technology development are reported. In the methane from eastern gas shales project, data on resource characterization and inventory, extraction technology, and t… more
Date: November 1, 1980
Creator: Manilla, R.D. (ed.)
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Aquifer Characteristics Data Report for the Weldon Spring Site chemical plant/raffinate pits and vicinity properties for the Weldon Spring Site Remedial Action Project, Weldon Spring, Missouri

Description: This report describes the procedures and methods used, and presents the results of physical testing performed, to characterize the hydraulic properties of the shallow Mississippian-Devonian aquifer beneath the Weldon Spring chemical plant, raffinate pits, and vicinity properties. The aquifer of concern is composed of saturated rocks of the Burlington-Keokuk Limestone which constitutes the upper portion of the Mississippian-Devonian aquifer. This aquifer is a heterogeneous anisotropic medium whi… more
Date: November 1, 1990
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Unconventional gas: Report on a focus group discussion

Description: three separate technologies were discussed but, because of the background of the discussants, the greater part of the discussion focused on geopressure aquifers. In general, there was considerable agreement with regard to the level and types of technological and economic uncertainty, the institutional barriers, and the role that the federal government should take in enhancing commercialization. The resource is considered to be vast and if the market were allowed to operate freely the demand for… more
Date: November 10, 1978
Creator: Christophersen, G.R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Renewable energy: energy from geothermal resources

Description: The geothermal resources of Florida are poor in most parts of the state, but offer potential in one or two areas. Groundwater heat pumps are efficient and presently abundant water resources exist in most Florida areas, but widespread use of these units could affect Florida's groundwater supplies if reinjection wells are not required. The effect of large numbers of wells on an aquifer in small geographic areas has not been adequately assessed. Data on groundwater heat pump energy use for Florida… more
Date: November 1, 1984
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Studies of marine macroalgae: saline desert water cultivation and effects of environmental stress on proximate composition. Final subcontract report. [Gracilaria tikvahiae; Ulva lactuca]

Description: The results presented in this report address the growth potential of marine macroalgae cultivated in desert saline waters, and the effects of certain environmental stresses (e.g., nitrogen, salinity, and temperature) on the proximate composition of several marine macroalgae. Two major desert saline water types were assayed for their ability to support the growth of Gracilaria, Ulva, and Caulerpa. Both water types supported short term growth, but long term growth was not supported. Carbohydrate … more
Date: November 1, 1985
Creator: Ryther, J. H.; DeBusk, T. A. & Peterson, J. E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Hydrogeologic controls on ground-water and contaminant discharge to the Columbia River near the Hanford Townsite

Description: The purpose of this study is to quantify ground-water and contaminant discharge to the Columbia River in the Hanford Townsite vicinity. The primary objectives of the work are to: describe the hydrogeologic setting and controls on ground-water movement and contaminant discharge to the Columbia River; understand the river/aquifer relationship and its effects on contaminant discharge to the Columbia River; quantify the ground-water and contaminant mass discharge to the Columbia River; and provide … more
Date: November 1, 1992
Creator: Luttrell, S. P.; Newcomer, D. R.; Teel, S. S. & Vermeul, V. R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
Back to Top of Screen