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Articles 1 - 30 of 30
Full-Text Articles in Entire DC Network
Characterization Of Microbial Populations In The Subsurface, Mark P. Buttner, Patricia Cruz, Klaus J. Stetzenbach, Amy J. Smiecinski
Characterization Of Microbial Populations In The Subsurface, Mark P. Buttner, Patricia Cruz, Klaus J. Stetzenbach, Amy J. Smiecinski
Publications (YM)
This task is part of a cooperative agreement between the UNLV Research Foundation and the U.S. Department of Energy (#DE-FC28-04RW12237) titled “Yucca Mountain Groundwater Characterization”. The work was conducted in the Harry Reid Center for Environmental Studies, Microbiology Division of the University of Nevada, Las Vegas from October 1, 2004 to September 30, 2006. The overall goal of this research was to investigate the phenomena that affect the fate and transport of radionuclides in the environment. The purpose of this task (ORD-RF-01), “Characterization of Microbial Activity”, was to develop a molecular biological method for the characterization of the microbial population …
An Approach For Using Soil Surveys To Guide The Placement Of Water Quality Buffers, Mike Dosskey, Matthew J. Helmers, Dean E. Eisenhauer
An Approach For Using Soil Surveys To Guide The Placement Of Water Quality Buffers, Mike Dosskey, Matthew J. Helmers, Dean E. Eisenhauer
USDA Forest Service / UNL Faculty Publications
Vegetative buffers may function better for filtering agricultural runoff in some locations than in others because of intrinsic characteristics of the land on which they are placed. The objective of this study was to develop a method based on soil survey attributes that can be used to compare soil map units for how effectively a buffer installed in them could remove pollutants from crop field runoff. Three separate models were developed. The surface runoff models for sediment and for dissolved pollutants were quantitative, based mainly on slope, soil, and rainfall factors of the Revised Universal Soil Loss Equation (RUSLE), and …
Water Resources And Geologic Field Trip In York And Seward Counties, Nebraska, Michael J. Jess, Mark Burbach
Water Resources And Geologic Field Trip In York And Seward Counties, Nebraska, Michael J. Jess, Mark Burbach
Conservation and Survey Division
No abstract provided.
Occurrence Of Sulfonamide Antimicrobials In Private Water Wells In Washington County, Idaho, Usa, Angela L. Batt, Daniel D. Snow, Diana S. Aga
Occurrence Of Sulfonamide Antimicrobials In Private Water Wells In Washington County, Idaho, Usa, Angela L. Batt, Daniel D. Snow, Diana S. Aga
Nebraska Water Center: Faculty Publications
County (Weiser, Idaho) were collected to assess the impact of a nearby confined animal feeding operation (CAFO) on the quality of the local groundwater. All six samples were found contaminated by two veterinary antimicrobials, sulfamethazine (at concentrations from 0.076 to 0.22 μg/l) and sulfadimethoxine (at concentrations from 0.046 to 0.068 μg/l). These groundwater samples also contained elevated concentrations of nitrate and ammonium. Three of the sampled wells have nitrate levels that exceeded the maximum contaminant level set by the US Environmental Protection Agency for drinking water, with nitrate concentration as high as 39.1 mg/l. All but one well showed nitrate, …
Soboba Band Of Luiseño Indians Settlement Agreement, Soboba Band Of Luiseño Indians Et Al
Soboba Band Of Luiseño Indians Settlement Agreement, Soboba Band Of Luiseño Indians Et Al
Native American Water Rights Settlement Project
Settlement Agreement: Soboba Band of Luiseño Indians Settlement Agreement of June 7, 2006, (final signatures Oct. 18, 2008) Parties: Soboba Band of Luiseño Indians, US, Eastern Municipal Water District, Lake Hemet Municipal Water District and Metropolitan Water District of Southern California. The Tribe is entitled to 9K acre-feet annually (afy) as a prior and paramount right. The districts agree to supply the Tribe water to the extent that it is not able to produce that amount. However, the Tribe agrees to limit its exercise of the right to 4,100 afy for 50 years. The Tribe may use water made available …
Use Of Optimization To Develop A Correlation Model For Predicting Residual Napl Saturation, Lizette R. Chevalier
Use Of Optimization To Develop A Correlation Model For Predicting Residual Napl Saturation, Lizette R. Chevalier
Publications
Predicting the residual saturation of a trapped non-aqueous phase liquid contaminant is critical to estimating the region of contamination, the design of remediation strategies, and risk assessment. Models were developed to predict residual NAPL saturation utilizing optimization and non-linear error functions, consequently allowing for a broader mathematical approach to model development. The input parameters evaluated represent soil and fluid properties: the uniformity coefficient (Cu), the coefficient of gradation (Cc), the capillary number (Nc), the bond number (Nb) and the total trapping number (Nt). Overall, the model that performed …
Water Management Plan For The Shire Of Kent, Mark Pridham
Water Management Plan For The Shire Of Kent, Mark Pridham
Resource management technical reports
No abstract provided.
Lockhart Catchment Appraisal 2005, Susan Murphy-White, P Leoni
Lockhart Catchment Appraisal 2005, Susan Murphy-White, P Leoni
Resource management technical reports
The Lockhart Catchment is the largest subcatchment of the Avon River Basin covering just over 3.56 million hectares, including 15 Shires running from Quairading and Bruce Rock in the north to Pingrup and Lake King in the south. This document aims to give the reader a starting point from which to further assess larger scale areas of the catchment for the purpose of planning to reverse and improve land degradation and sustainable farming in Western Australia.
Ground-Penetrating Radar Theory And Application Of Thin-Bed Offset-Dependent Reflectivity, John H. Bradford, Jacob C. Deeds
Ground-Penetrating Radar Theory And Application Of Thin-Bed Offset-Dependent Reflectivity, John H. Bradford, Jacob C. Deeds
CGISS Publications and Presentations
Offset-dependent reflectivity or amplitude-variationwith- offset (AVO) analysis of ground-penetrating radar (GPR) data may improve the resolution of subsurface dielectric permittivity estimates. A horizontally stratified medium has a limiting layer thickness below which thin-bed AVO analysis is necessary. For a typical GPR signal, this limit is approximately 0.75 of the characteristic wavelength of the signal. Our approach to modeling the GPR thin-bed response is a broadband, frequency-dependent computation that utilizes an analytical solution to the three-interface reflectivity and is easy to implement for either transverse electric (TE) or transverse magnetic (TM) polarizations. The AVO curves for TE and TM modes differ …
Reflectivity Modeling Of A Ground-Penetrating-Radar Profile Of A Saturated Fluvial Formation, William P. Clement, Warren Barrash, Michael D. Knoll
Reflectivity Modeling Of A Ground-Penetrating-Radar Profile Of A Saturated Fluvial Formation, William P. Clement, Warren Barrash, Michael D. Knoll
Geosciences Faculty Publications and Presentations
Major horizons in radar reflection profiles may correlate with contacts between stratigraphic units or with structural breaks such as fault surfaces. Minor reflections may be caused by clutter or, in some cases, may indicate material properties or structure within stratigraphic units. In this study, we examine the physical basis for major and minor reflections observed in a shallow, unconfined, fluvial aquifer near Boise, Idaho, U. S. A. We compare a 2D profile from a surface ground-penetrating-radar reflection transect with the 1D modeled reflection profiles at three wells adjacent to the surface-reflection profile. The 1D models are based on dielectric constant …
Investigating The Stratigraphy Of An Alluvial Aquifer Using Crosswell Seismic Traveltime Tomography, Geoff J.M. Moret, Michael D. Knoll, Warren Barrash, William P. Clement
Investigating The Stratigraphy Of An Alluvial Aquifer Using Crosswell Seismic Traveltime Tomography, Geoff J.M. Moret, Michael D. Knoll, Warren Barrash, William P. Clement
CGISS Publications and Presentations
In this study, we investigate the use of crosswell P-wave seismic tomography to obtain spatially extensive information about subsurface sedimentary architecture and heterogeneity in alluvial aquifers. Our field site was a research wellfield in an unconfined aquifer near Boise, Idaho. The aquifer consists of a ~ 20-m-thick sequence of alluvial cobble- and-sand deposits, which have been subdivided into five stratigraphic units based on neutron porosity logs, grainsize analysis, and radar reflection data. We collected crosswell and borehole-to-surface seismic data in wells 17.1 m apart. We carefully considered the impact of well deviation, data quality control, and the choice of inversion …
Geostatistical And Stochastic Study Of Radio Nuclide Transport In The Unsaturated Zone At Yucca Mountain, Ming Ye, Amy J. Smiecinski, Raymond E. Keeler
Geostatistical And Stochastic Study Of Radio Nuclide Transport In The Unsaturated Zone At Yucca Mountain, Ming Ye, Amy J. Smiecinski, Raymond E. Keeler
Publications (YM)
The U.S. Nuclear Waste Technical Review Board [Cohon et al. 1998] evaluated the technical and scientific validity of activities undertaken by the Secretary of Energy to characterize Yucca Mountain, Nevada, for its suitability as an underground repository in which to store high-level radioactive waste and spent nuclear fuel. In the report, the Board pinpointed that the study on groundwater flow and radionuclide transport in the saturated and unsaturated zones below Yucca Mountain should, over the next several years, focus on reducing prediction uncertainty. In its 2002, the Board repeated this concern by stating, “… hydrogeologic processes that affect radionuclide transport …
Traveltime Inversion Of Vertical Radar Profiles, William P. Clement, Michael D. Knoll
Traveltime Inversion Of Vertical Radar Profiles, William P. Clement, Michael D. Knoll
Geosciences Faculty Publications and Presentations
Traveltimes of direct arrivals in vertical radar profiles (VRPs) are tomographically inverted to estimate the earth’s electromagnetic (EM) velocity between a surface transmitter and a downhole receiver. We determine the 1D interval velocity model that best fits the first-arrival traveltimes by using a weighted, damped, least-squares inversion scheme. We assess the accuracy of the velocity model using synthetic traveltimes from a known velocity-distribution model simulating an unconfined aquifer. The inverted velocity profile closely matched the velocity profile of the input model in the synthetic examples. Using vertical radar profile data from an unconfined aquifer near Boise, Idaho, we inverted traveltimes …
Water Management Plan For The Shire Of Lake Grace., Mark Pridham
Water Management Plan For The Shire Of Lake Grace., Mark Pridham
Resource management technical reports
No abstract provided.
Generalized Geologic Map For Land-Use Planning: Carter County, Kentucky, Gerald A. Weisenfluh, Daniel I. Carey
Generalized Geologic Map For Land-Use Planning: Carter County, Kentucky, Gerald A. Weisenfluh, Daniel I. Carey
Map and Chart--KGS
This map is not intended to be used for selecting individual sites. Its purpose is to inform land-use planners, government officials, and the public in a general way about geologic bedrock conditions that affect the selection of sites for various purposes. The properties of thick soils may supercede those of the underlying bedrock and should be considered on a site-to-site basis. At any site, it is important to understand the characteristics of both the soils and the underlying rock.
Generalized Geologic Map For Land-Use Planning: Marion County, Kentucky, Daniel I. Carey, Garland R. Dever Jr., Adam Pike
Generalized Geologic Map For Land-Use Planning: Marion County, Kentucky, Daniel I. Carey, Garland R. Dever Jr., Adam Pike
Map and Chart--KGS
This map is not intended to be used for selecting individual sites. Its purpose is to inform land-use planners, government officials, and the public in a general way about geologic bedrock conditions that affect the selection of sites for various purposes. The properties of thick soils may supercede those of the underlying bedrock and should be considered on a site-to-site basis. At any site, it is important to understand the characteristics of both the soils and the underlying rock.
Groundwater Quality In Kentucky: Barium, Bart Davidson, R. Stephen Fisher
Groundwater Quality In Kentucky: Barium, Bart Davidson, R. Stephen Fisher
Information Circular--KGS
Barium is a silver-white alkaline earth metal that is not found free in nature because it is highly reactive with sulfate and carbonate. Barium compounds can be naturally occurring or man-made. The most common natural occurrence of barium is in the mineral barite (barium sulfate), which has many uses in industry, such as a filler in the making of rubber, plastic and resin, white pigment, drilling lubricants used in the oil and gas industry, paint, bricks and glass (Agency for Toxic Substances and Disease Registry, 2004). Barium sulfate is very slightly soluble in water and absorbs X-rays, making it an …
Generalized Geologic Map For Land-Use Planning: Mccreary County, Kentucky, Daniel I. Carey, Randall L. Paylor, Bethany L. Overfield
Generalized Geologic Map For Land-Use Planning: Mccreary County, Kentucky, Daniel I. Carey, Randall L. Paylor, Bethany L. Overfield
Map and Chart--KGS
This map is not intended to be used for selecting individual sites. Its purpose is to inform land-use planners, government officials, and the public in a general way about geologic bedrock conditions that affect the selection of sites for various purposes. The properties of thick soils may supercede those of the underlying bedrock and should be considered on a site-to-site basis. At any site, it is important to understand the characteristics of both the soils and the underlying rock.
Implications Of Subduction Rehydration For Earth's Deep Water Cycle, Lars Rüpke, Jason Phipps Morgan, Jacqueline Eaby Dixon
Implications Of Subduction Rehydration For Earth's Deep Water Cycle, Lars Rüpke, Jason Phipps Morgan, Jacqueline Eaby Dixon
Marine Science Faculty Publications
The “standard model” for the genesis of the oceans is that they are exhalations from Earth’s deep interior continually rinsed through surface rocks by the global hydrologic cycle. No general consensus exists, however, on the water distribution within the deeper mantle of the Earth. Recently Dixon et al. [2002] estimated water concentrations for some of the major mantle components and concluded that the most primitive (FOZO) are significantly wetter than the recycling associated EM or HIMU mantle components and the even drier depleted mantle source that melts to form MORB. These findings are in striking agreement with the results of …
Ec798 Residential On-Site Wastewater Treatment: An Overview, Janet R. Hygnstrom, Wayne Woldt, Sharon Skipton
Ec798 Residential On-Site Wastewater Treatment: An Overview, Janet R. Hygnstrom, Wayne Woldt, Sharon Skipton
University of Nebraska-Lincoln Extension: Historical Materials
Answers for homeowners, realtors and lenders about residential on-site wastewater treatment systems.
This publication will answer many questions that homeowners, potential homeowners, realtors and lenders have about residential on-site wastewater treatment systems. Information is based on Nebraska Department of Environmental Quality's "Title 124: Rules and Regulations for the Design, Operation and Maintenance of On-site Wastewater Treatment Systems.
Preliminary Groundwater Investigation Of The Beverley Townsite, Edward K. Crossley
Preliminary Groundwater Investigation Of The Beverley Townsite, Edward K. Crossley
Resource management technical reports
No abstract provided.
Hillman And Narrogin Zones (Blackwood Zones 8 And 9) : Rapid Catchment Appraisal, Henry Brockman
Hillman And Narrogin Zones (Blackwood Zones 8 And 9) : Rapid Catchment Appraisal, Henry Brockman
Resource management technical reports
The aims of this Resource Management Technical Report are to assess the current extent of salinity and other natural resource degradation hazards within the Hillman and Narrogin Zones of Western Australia. These zones cover 409,000 hectares in South West Western Australia, including the towns of Narrogin and Darkan. It also includes benchmarks and sustainability indicators that can be used by landholders and planners to determine the best management options for the area.
Pesticide Safety 2006 - Groundwater Protection And Water Regulations 2006, Brian Wick
Pesticide Safety 2006 - Groundwater Protection And Water Regulations 2006, Brian Wick
Cranberry Station Extension meetings
No abstract provided.
Lake Bryde Recovery Catchment Paleochannel Drilling Investigation, T Cattlin, Rosemary Nott
Lake Bryde Recovery Catchment Paleochannel Drilling Investigation, T Cattlin, Rosemary Nott
Resource management technical reports
No abstract provided.
Remediation Of Aromatic Hydrocarbons In Low Permeability Soils: Updating The Remediation Decision Tree (Synthesis Study), Inez Hua, Andy Hopf
Remediation Of Aromatic Hydrocarbons In Low Permeability Soils: Updating The Remediation Decision Tree (Synthesis Study), Inez Hua, Andy Hopf
JTRP Technical Reports
Because of the large number of technologies for in situ remediation, the very different types of contaminants to which these technologies are applicable, and the wide range of field conditions, it can be difficult to choose an optimal technology for a specific site. Sorting and prioritizing the various factors which contribute to the success of a particular clean-up can be daunting. Furthermore, non-technical factors, such as those in the legal, political, or financial realm, may also influence which technology is ultimately chosen. Most in situ treatment methods are effective in permeable soil. However, much of Indiana soil is low-permeability, so …
Bogidiella Indica, A New Species Of Subterranean Amphipod Crustacean (Bogidiellidae) From Wells In Southeastern India, With Remarks On The Biogeographic Importance Of Recently Discovered Bogidiellids On The Indian Subcontinent, John R. Holsinger, Y. Ranga Reddy, Mohammed Messouli
Bogidiella Indica, A New Species Of Subterranean Amphipod Crustacean (Bogidiellidae) From Wells In Southeastern India, With Remarks On The Biogeographic Importance Of Recently Discovered Bogidiellids On The Indian Subcontinent, John R. Holsinger, Y. Ranga Reddy, Mohammed Messouli
Biological Sciences Faculty Publications
Bogidiella indica, new species, is described from three water wells in southeastern India, including a bore-well on the campus of Acharya Nagarjuna University in Nagarjunanagar, a water well in Guntur town, and an agricultural well in the Godavari and Krishna Basin, all in the state of Andhra Pradesh, India. The new species is assigned to the genus Bogidiella Hertzog and to a newly designated species group within the genus. Despite the near circum-global distribution of the family Bogidiellidae, only a single, partially intact specimen of a bogidiellid had been collected from the Indian subcontinent prior to the discovery of specimens …
Generalized Geologic Map For Land-Use Planning: Mason County, Kentucky, Daniel I. Carey
Generalized Geologic Map For Land-Use Planning: Mason County, Kentucky, Daniel I. Carey
Map and Chart--KGS
This map is not intended to be used for selecting individual sites. Its purpose is to inform land-use planners, government officials, and the public in a general way about geologic bedrock conditions that affect the selection of sites for various purposes. The properties of thick soils may supercede those of the underlying bedrock and should be considered on a site-to-site basis. At any site, it is important to understand the characteristics of both the soils and the underlying rock.
Generalized Geologic Map For Land-Use Planning: Whitley County, Kentucky, Daniel I. Carey, Bethany L. Overfield, Randall L. Paylor
Generalized Geologic Map For Land-Use Planning: Whitley County, Kentucky, Daniel I. Carey, Bethany L. Overfield, Randall L. Paylor
Map and Chart--KGS
No abstract provided.
Groundwater-Level Changes In Nebraska, Spring 2000 To Spring 2006/ Density Of Registered Irrigation Wells In Nebraska August 2005, Conservation Survey Division
Groundwater-Level Changes In Nebraska, Spring 2000 To Spring 2006/ Density Of Registered Irrigation Wells In Nebraska August 2005, Conservation Survey Division
Conservation and Survey Division
No abstract provided.
Ravensthorpe Area Catchment Appraisal 2006, A Massenbauer
Ravensthorpe Area Catchment Appraisal 2006, A Massenbauer
Resource management technical reports
The Ravensthorpe area covers 861, 000 hectares. Ninety percent of the study area covered in this report falls within the Ravensthorpe Shire, Western Australia. This document aims to give the reader a starting point from which to further assess larger scale areas of the catchment for the purpose of planning to reverse and improve land degradation and sustainable farming in Western Australia.