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A Preliminary Appraisal of Sediment Sources and Transport in Kings Bay and Vicinity, Georgia and Florida

Description: From introduction: This report reviews descriptive background information of the Kings Bay area and presents data on currents, salinity, temperature, turbidity, suspended sediment, phytoplankton, and on the chemical and physical characteristics of bottom sediments. Water, salt, and suspended-sediment discharges are computed for consecutive ebbtides and floodtides that occurred during the November investigation.
Date: 1983
Creator: McConnell, James B.; Radtke, Dean B.; Hale, Timothy W. & Buell, Gary R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Modeled tephra ages from lake sediments, base of Redoubt Volcano, Alaska

Description: A 5.6-m-long lake sediment core from Bear Lake, Alaska, located 22 km southeast of Redoubt Volcano, contains 67 tephra layers deposited over the last 8750 cal yr, comprising 15% of the total thickness of recovered sediment. Using 12 AMS {sup 14}C ages, along with the {sup 137}Cs and {sup 210}Pb activities of recent sediment, we evaluated different models to determine the age-depth relation of sediment, and to determine the age of each tephra deposit. The age model is based on a cubic smooth spl… more
Date: February 25, 2007
Creator: Schiff, Caleb J.; Kaufman, Darrell S.; Wallace, Kristi L.; Werner, Al; Ku, Teh-Lung & Brown, Thomas A.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Sediment studies at Bikini Atoll part 1. distribution of fine and coarse components in surface sediments

Description: In 1979, 21 years after the moratorium on nuclear testing in the Marshall Islands, surface sediment samples (to depths of 2 and 4 cm) were collected from 87 locations over the floor of Bikini lagoon. The main purpose for the collections was to map the distribution of long- lived man-made radionuclides associated with the bottom material. In addition the samples were processed to estimate the fraction of fine and coarse components to show what modifications occurred since the sediment compositio… more
Date: January 1, 1997
Creator: Noshkin, V. E.; Eagle, R. J. & Robison, W. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Characterization of Triclocarban, Methyl- Triclosan, and Triclosan in Water, Sediment, and Corbicula Fluminea (Müller, 1774) Using Laboratory, in Situ, and Field Assessments

Description: In the last decade emerging contaminants research has intensified in a bid to answer questions about fate, transport, and effects as these chemicals as they get released into the environment. The chemicals of interest were the antimicrobials; triclocarban (TCC) and triclosan (TCS), and a metabolite of triclosan, methyl triclosan (MTCS). This research was designed to answer the question: what is the fate of these chemicals once they are released from the waste water treatment plant into receivin… more
Date: May 2011
Creator: Edziyie, Regina E.
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
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EM 14 - Bubbleless Gas Transfer Technology for the In Situ Remediation of Chlorinated Hydrocarbons

Description: The primary objective of this project is to demonstrate the ability of hydrogen to supply reducing equivalents for the reductive dehalogenation of PCE. This objective will be accomplished by two types of activities. First, laboratory experiments will compare the kinetics of hydrogen-mediated dehalogenation with natural routes of loss (hydrolysis and natural attenuation). Secondly, bench-scale column experiments will be performed to demonstrate hydrogen-mediated reductive dehalogenation in aquif… more
Date: November 1, 1998
Creator: Gallaher, John R. & Kurz, Marc D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Suspended sediment transport in the benthic nepheloid layer in southeastern Lake Michigan

Description: Time series observations of water temperature, water transparency, and current velocity were made at four stations located on the lake slope of southeastern Lake Michigan. The observations show that during stratified conditions the benthic nepheloid layer is probably not maintained by the local resuspension of bottom sediment. A more likely source is sediment resuspended further inshore and then transported across the shelf and slope during downwelling events. Internal wave action may be an imp… more
Date: February 1, 1995
Creator: Hawley, N. & Lesht, B.M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Measurement and modeling of energetic material mass transfer to soil pore water : Project CP-1227 : FY04 annual technical report.

Description: Military test and training ranges operate with live fire engagements to provide realism important to the maintenance of key tactical skills. Ordnance detonations during these operations typically produce minute residues of parent explosive chemical compounds. Occasional low order detonations also disperse solid phase energetic material onto the surface soil. These detonation remnants are implicated in chemical contamination impacts to groundwater on a limited set of ranges where environmental c… more
Date: January 1, 2005
Creator: Stein, Joshua S. & Webb, Stephen Walter
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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BP-5 Remedial Investigation Slug-Test Characterization Results for Well 699-52-55A

Description: Pacific Northwest National Laboratory conducted slug-test characterization at the final, completed BP-5 Remedial Investigation well 699-52-55A near the 200-East Area at the Hanford Site on April 22, 2008. The slug-test characterization was in support of the BP-5 Remedial Investigation. The portion of the unconfined aquifer tested is composed of sediments of the lower Ringold Formation and the underlying Elephant Mountain basalt flowtop. The basalt flowtop unit was included as part of the effect… more
Date: July 21, 2008
Creator: Newcomer, Darrell R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Review of the geological and structural setting near the site of the proposed Transuranic Waste Facility (TRUWF) Technical Area 52 (TA-52), Los Alamos National Laboratory

Description: Because of Los Alamos National Laboratory’s proximal location to active geologic structures, assessment of seismic hazards, including the potential for seismic surface rupture, must occur before construction of any facilities housing nuclear or other hazardous materials. A transuranic waste facility (TRUWF) planned for construction at Technical Area 52 (TA-52) provides the impetus for this report. Although no single seismic hazards field investigation has focused specifically on TA-52, numerous… more
Date: October 1, 2007
Creator: Schultz-Fellenz, Emily S. & Gardner, Jamie N.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Analytical Plan for Roman Glasses

Description: Roman glasses that have been in the sea or underground for about 1800 years can serve as the independent “experiment” that is needed for validation of codes and models that are used in performance assessment. Two sets of Roman-era glasses have been obtained for this purpose. One set comes from the sunken vessel the Iulia Felix; the second from recently excavated glasses from a Roman villa in Aquileia, Italy. The specimens contain glass artifacts and attached sediment or soil. In the case of the… more
Date: January 1, 2011
Creator: Strachan, Denis M.; Buck, Edgar C.; Mueller, Karl T.; Schwantes, Jon M.; Olszta, Matthew J.; Thevuthasan, Suntharampillai et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Monitoring Potential Transport of Radioactive Contaminants in Shallow Ephemeral Channels

Description: The U.S. Department of Energy (DOE) National Nuclear Security Administration (NNSA), Nevada Site Office (NSO), Environmental Restoration Soils Activity has authorized the Desert Research Institute (DRI) to conduct field assessments of potential sediment transport of contaminated soil from Corrective Action Unit (CAU) 550, Area 8 Smoky Contamination Area (CA), during precipitation runoff events. CAU 550 includes Corrective Action Sites (CASs) 08-23-03, 08-23-04, 08-23-06, and 08-23-07; these CAS… more
Date: February 1, 2012
Creator: Miller, Julianne J.; Mizell, Steve A.; Nikolich, George & Campbell, Scott A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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The formation and maintenance of single-thread tie channels entering floodplain lakes: observations from three diverse river systems

Description: Tie channels connect rivers to floodplain lakes on many lowland rivers and thereby play a central role in floodplain sedimentology and ecology, yet they are generally unrecognized and little studied. here we report the results of field studies focused on tie channel origin and morphodynamics in three contrasting systems: the Middle Fly River, Papua New Guinea, the Lower Mississippi River, and Birch Creek in Alaska. Across these river systems, tie channels vary by an order of magnitude in size b… more
Date: January 1, 2009
Creator: Rowland, Joel C; Dietrich, William E; Day, Geoff & Parker, Gary
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Summary Report of Geophysical Logging For The Seismic Boreholes Project at the Hanford Site Waste Treatment Plant.

Description: During the period of June through October 2006, three deep boreholes and one corehole were drilled beneath the site of the Waste Treatment Plant (WTP) at the U.S. Department of Energy (DOE) Hanford Site near Richland, Washington. The boreholes were drilled to provide information on ground-motion attenuation in the basalt and interbedded sediments underlying the WTP site. This report describes the geophysical logging of the deep boreholes that was conducted in support of the Seismic Boreholes Pr… more
Date: February 1, 2007
Creator: Gardner, Martin G. & Price, Randall K.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Phosphate Mineral Source Evaluation and Zone-of-Influence Estimates for Sediment Contaminant Amendments at the TNX Outfall Delta Operable Unit

Description: The TNX pilot-scale research facility released processed waste, containing elevated concentrations of several metals and radionuclides into an unlined seepage basin between 1958 and 1980. The contents of this basin have entered the nearby swamp, the TNX Outfall Delta (TNX OD), by subsurface and overland flow. Studies were conducted to evaluate whether sediment amendments could be used to reduce contaminant mobility and bioavailability. Previous studies showed that the addition of a phosphate mi… more
Date: July 6, 2004
Creator: KAPLAN, DI
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Issues Relating To Sediment Toxicity Testing And Bioaccumulation Of Persistent Chemicals In SRS Sediments

Description: Many chemical contaminants that enter a water body in an aqueous form are ultimately deposited to the sediments. Over time, the concentrations of contaminants in sediments may build up to concentrations that are much higher than those found in the water column. However, not all chemicals present in sediments are toxic/bioavailable. Factors that affect bioavailability include aqueous solubility, pH, redox, and composition of the sediment matrix (grain size, mineral constituents, organic matter),… more
Date: March 1, 2005
Creator: WINONA, SPECHT
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Characterization of Microbial Communities in TCE-Contaminated Seep Zone Sediments

Description: Hundreds of sites across the United States contain trichloroethene (TCE) contamination, including the Department of Energy's Savannah River Site (SRS) in Aiken, South Carolina. Previous studies have indicated that microorganisms are capable of efficiently degrading TCE to nonhazardous end products. In this project, molecular and growth based methods were used for microbial characterization of a TCE impacted seepzone where TCE degradation is naturally occurring. The results from this work provid… more
Date: March 7, 2005
Creator: ROBIN, BRIGMON
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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FY2002 P Well Activities Report

Description: The P wells were installed in the late 80s as part of the SRP Baseline Hydrogeological Investigation for the purpose of updating and improving the current knowledge and understanding of the hydrogeological systems underlying the SRS. During the installation of the P well series wells, a total of more than 16,000 feet of unconsolidated geologic sediments were cored and are currently stored at the Core Facility and 129 wells were installed at eighteen widely spaced P well clusters. Each well clus… more
Date: December 6, 2002
Creator: Noonkester, J.V.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Influence of Sediment Redox Conditions on Contaminant Stabilization by Apatite and FE(0)

Description: Efficacy of stabilizing Ce, Co, and Pb by adding apatite and zero-valent Fe (Fe(0)) to contaminated wetland sediments was quantified under oxidizing and reducing conditions. The redox status and the general water chemistry of the oxidized and reduced treatments differed greatly, yet the influences of the amendments on contaminant stabilization were quite similar; both amendments significantly (p less than or equal to 0.05) reduced aqueous contaminant concentrations. Based on resin sorption stud… more
Date: May 17, 2004
Creator: Kaplan, D. I.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Laboratory Investigation of Electro-Osmotic Remediation of Fine-Grained Sediments

Description: Electro-osmosis, a coupled-flow phenomenon in which an applied electrical potential gradient drives water flow, may be used to induce water flow through fine-grained sediments. We plan to use this technology to remediate chlorinated solvent-contaminated clayey zones at the LLNL site. The electro-osmotic conductivity (k{sub e}) determined from bench-top studies for a core extracted from a sediment zone 36.4-36.6 m below surface was initially 7.37 x 10{sup -10} m{sup 2}/s-V, decreasing to 3.44 x … more
Date: February 23, 2000
Creator: Cherepy, N.; Wildenschild, D. & Elsholz, A.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Subtask 1.17 - Subcritical Water Extraction of Mercury From Soils and Sediments

Description: The U.S. Environmental Protection Agency (EPA) "National Sediment Quality Survey" lists the top pollutants responsible for toxicity in watersheds as 1) PCBS (polychlorinated biphenyls), 2) mercury, and 3) other organics such as PAHs polycyclic aromatic hydrocarbons) and pesticides. In addition, these same pollutants are major contributors to chemical pollution on U.S. Department of Energy (DOE) and other contaminated sites (e.g., industrial sites and harbors). An ideal remediation method would … more
Date: August 1, 1997
Creator: Hawthorne, Steven B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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NNSS Soils Monitoring: Plutonium Valley (CAU366)

Description: The U.S. Department of Energy (DOE) National Nuclear Security Administration (NNSA), Nevada Site Office (NSO), Environmental Restoration Soils Activity has authorized the Desert Research Institute (DRI) to conduct field assessments of potential sediment transport of contaminated soil from Corrective Action Unit (CAU) 366, Area 11 Plutonium Valley Dispersion Sites Contamination Area (CA) during precipitation runoff events.
Date: February 1, 2012
Creator: Miller, Julianne J.; Mizell, Steve A.; Nikolich, George & Campbell, Scott
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Coping With Contaminated Sediments and Soils in the Urban Environment.

Description: Soils and sediments contaminated with toxic organic and inorganic compounds harmful to the environment and to human health are common in the urban environment. We report here on aspects of a program being carried out in the New York/New Jersey Port region to develop methods for processing dredged material from the Port to make products that are safe for introduction to commercial markets. We discuss some of the results of the program in Computational Environmental Science, Laboratory Environmen… more
Date: May 25, 2004
Creator: Jones, K. W.; Van Der Lelie,D.; Mcguigan, M. & Al., Et
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Crustal Structure of Iraq from Receiver Functions and Surface Wave Dispersion

Description: We report the crustal structure of Iraq, located in the northeastern Arabian plate, estimated by joint inversion of P-wave receiver functions and surface wave group velocity dispersion. Receiver functions were computed from teleseismic recordings at two temporary broadband seismic stations in Mosul (MSL) and Baghdad (BHD), separated by approximately 360 km. Group velocity dispersion curves at the sites were derived from continental-scale tomography of Pasyanos (2006). The inversion results show… more
Date: August 31, 2006
Creator: Gok, Rengin; Mahdi, Hanan; Al-Shukri, Haydar & Rodgers, Arthur J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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