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X-ray stereo microscopy for investigation of dynamics in soils

Description: The presented combination of stereo imaging and elemental mapping with soft X-ray microscopy reveals the spatial arrangement of naturally aqueous colloidal systems, e.g. iron oxides in soil colloid clusters. Changes in the spatial arrangement can be induced by manipulating the sample mounted to the X-ray microscope and thus be investigated directly.
Date: September 16, 2008
Creator: Gleber, S.-C.; Sedlmair, J.; Bertilson, M.; von Hofsten, O.; Heim, S.; Guttmann, P. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Characterizing soil preferential flow using iodine--starch staining experiments and the active region model

Description: Thirteen iodine-starch staining experiments with different boundary conditions and measurement scales were conducted at two sites to study preferential flow processes in natural unsaturated soils. Digital imaging analyses were implemented to obtain the corresponding preferential flow patterns. The test results are used to evaluate a recently proposed active region model in terms of its usefulness and robustness for characterizing unsaturated flow processes at field scale. Test results provide u… more
Date: March 1, 2009
Creator: Sheng, Feng; Wang, Kang; Zhang, Renduo & Liu, Hui-Hai
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Hydrogeology of the Hanford Site Central Plateau – A Status Report for the 200 West Area

Description: The Remediation Decisions Support (RDS) function of the Soil and Groundwater Remediation Project (managed by CH2M HILL Plateau Remediation Company [CHPRC]) is responsible for facilitating the development of consistent data, parameters, and conceptual models to resolve technical issues and support efforts to estimate contaminant migration and impacts (i.e., the assessment process). In particular, the RDS function is working to update electronic data sources and conceptual models of the geologic … more
Date: August 27, 2009
Creator: Last, George V.; Thorne, Paul D.; Horner, Jacob A.; Parker, Kyle R.; Bjornstad, Bruce N.; Mackley, Rob D. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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The Changeable Interaction between Soils and Pressure Cells: Tests and Reviews at the Waterways Experiment Station

Description: Partial abstract: "The principal subjects of the report are the often neglected changes in the interaction of soil and pressure cells with consequent changes in relative errors in cell registrations. The report contains (a) a brief account of the development and use of soil pressure cells; (b) a review of proposed theories for soil-cell interaction; (c) a delayed account of tests with Waterways Experiment Station pressure cells placed in a large triaxial device; and (d) tentative conclusions pl… more
Date: June 1976
Creator: Hvorslev, Mikael Juul
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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The Unified Soil Classification System

Description: The purpose of this manual is to describe and explain the use of the "Unified Soil Classification System" in order that identification of soil types will be on a common basis throughout the agencies using this system.
Date: March 1953
Creator: Waterways Experiment Station (U.S.)
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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The Unified Soil Classification System, Appendix B: Characteristics of Soil Groups Pertaining to Roads and Airfields

Description: Report describing various kinds of soils and their characteristics, for use in constructing roads and airfields: "The properties desired in soils for foundations under roads and airfields and for base courses under flexible pavements are: adequate strength, good compaction characteristics, adequate drainage, resistance to frost action in areas where frost is a factor, and acceptable compression and expansion characteristics. Certain of these properties, if inadequate in the soils available, may… more
Date: June 1957
Creator: Waterways Experiment Station (U.S.)
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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The Unified Soil Classification System, Appendix A: Characteristics of Soil Groups Pertaining to Embankments and Foundations

Description: Report describing various kinds of soils and their characteristics, for use in constructing embankments and foundations: "The major properties of a soil proposed for use in an embankment or foundation that are of concern to the design or construction engineer are its strength, permeability, and consolidation and compaction characteristics. Other features may be investigated for a specific problem, but in general some or all of the properties mentioned above are of primary importance in an earth… more
Date: March 1953
Creator: Waterways Experiment Station (U.S.)
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Improvements, Evaluation, and Application of 1D Vetem Inversion and Development and Application of 3D Vetem Inversion to Waste Pits at The Idaho National Engineering and Environmental Laboratory

Description: The project aim was the improvement, evaluation, and application of one dimensional (1D) inversion and development and application of three dimensional (3D) inversion to processing of data collected at waste pits at the Idaho National Engineering and Environmental Laboratory. The inversion methods were intended mainly for the Very Early Time Electromagnetic (VETEM) system which was designed to improve the state-of-the-art of electromagnetic imaging of the shallow (0 to about 5m) subsurface thro… more
Date: October 27, 2004
Creator: Chew, Weng Cho
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Toxicological Benchmarks for Screening Potential Contaminants of Concern for Effects on Soil and Litter Invertebrates and Heterotrophic Process

Description: This report presents a standard method for deriving benchmarks for the purpose of ''contaminant screening,'' performed by comparing measured ambient concentrations of chemicals. The work was performed under Work Breakdown Structure 1.4.12.2.3.04.07.02 (Activity Data Sheet 8304). In addition, this report presents sets of data concerning the effects of chemicals in soil on invertebrates and soil microbial processes, benchmarks for chemicals potentially associated with United States Department of … more
Date: January 1, 1994
Creator: Will, M. E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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GENERATOR PAD FOUNDATIONS

Description: The purpose of this analysis is to design structural foundations for the Generator Pad. The equipment foundation shall be designed in Section 10 using standard foundation design hand calculations. The vertical loads reflect Mechanical/Electrical requirements. Lateral loads will be calculated using applicable codes. The soil bearing and foundation stresses will be analyzed using accepted engineering mechanics. The foundation will be designed using the Strength Design Method.
Date: April 27, 1995
Creator: Saltikov, T.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Challenge Team Report: Brookhaven National Laboratory Environmental Restoration Program

Description: The overall conclusion is that the BNL ER program has accomplished much and is well positioned to move aggressively towards closure. Seven removal actions have been completed. A record of decision (ROD) has been reached on Operable Unit IV, and interim soil cleanup has been completed. The remaining three RODs are under negotiation now.
Date: July 19, 1999
Creator: Page, T. L. & Montgomery, M. S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Reliability Analysis of Penetration Systems Using Nondeterministic Methods

Description: Device penetration into media such as metal and soil is an application of some engineering interest. Often, these devices contain internal components and it is of paramount importance that all significant components survive the severe environment that accompanies the penetration event. In addition, the system must be robust to perturbations in its operating environment, some of which exhibit behavior which can only be quantified to within some level of uncertainty. In the analysis discussed her… more
Date: October 27, 1999
Creator: Field, Richard V., Jr.; Paez, Thomas L. & Red-Horse, John R.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Partial Re-vegetation of the Dust and Blowing-Sand Source Area: A proposal for use of a 175 K$ SEP Fine

Description: We propose using the 175 K$ SEP money to stabilize approximately 300-340 acres located to the southwest of the 200 West Expansion Area fence. We propose a procedure that relies on drill seeding a mixture of perennial native grasses followed by truck application of a soil fixative such as Soil Master. This effort would compliment FDH/Duratek activities planned for inside the 200 West fence lines. Assuming that both efforts are successful, the result would be between 2,000 and 2,500 meters of sta… more
Date: August 1, 2001
Creator: Becker, James M. & Sackschewsky, Michael R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Vadose Zone Transport Field Study: FY 2002 Test Plan

Description: The primary objective of the Vadose Zone Transport Field Study is to obtain hydrologic, geophysical, and geochemical data from controlled field studies to reduce the uncertainty in vadose-zone conceptual models and to facilitate the calibration of numerical models for water flow and contaminant transport through Hanford's heterogeneous vadose zone. A secondary objective is to evaluate advanced, cost-effective characterization methods with the potential to assess changing conditions in the vados… more
Date: May 1, 2001
Creator: Ward, Anderson L. & Gee, Glendon W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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The Influence of a Subslab Gravel Layer and Open Area on Soil-Gas and Radon Entry into Two Experimental Basements

Description: Measurements of steady-state soil-gas and {sup 222}Rn entry rates into two room-sized, experimental basement structures were made for a range of structure depressurizations (0-40 Pa) and open floor areas (0-165 x 10{sup -4} m{sup 2}). The structures are identical except that in one the floor slab lies directly on native soil whereas in the other the slab lies on a high-permeability gravel layer. The subslab gravel layer greatly enhances the soil-gas and radon entry rate into the structure. The … more
Date: March 1, 1995
Creator: Robinson, Allen L. & Sextro, R.G.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Fixation of Mixed Fission Product Activity by Soils of the Savannah River Project

Description: From introduction: "A study of the fission product activity-fixing properties of the Savannah River Project soils was undertaken by this site to provide data for the planning of the waste disposal program for the Savannah River Project."
Date: February 23, 1952
Creator: Tesdahl, T. C.; Lowe, C. S.; Mead, F. C. & Murphy, E. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Interfacial Reduction-Oxidation Mechanisms Governing Fate and Transport of Contaminants in the Vadose Zone

Description: Immobilization of toxic and radioactive metals in the vadose zone by In Situ Gaseous Reduction (ISGR) using hydrogen sulfide (H2S) is a promising technology for soil remediation. Earlier laboratory and field studies have shown that Cr(VI) can be effectively immobilized by treatment with dilute gaseous H2S. The objective of this project is to characterize the interactions among H2S, the metal contaminants, and soil components. Understanding these interactions is needed to assess the long-term ef… more
Date: January 11, 2004
Creator: Deng, Baolin; Thornton, Edward; Cantrell, Kirk; Olsen, Khris & Amonette, James
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Potato Culture on Irrigated Farms of the West

Description: "In the mountain valleys of Colorado are found conditions of altitude, soil, and moisture naturally favorable to the growth of the potato, with an almost entire absence of harmful freezes and bacterial enemies." -- p. 5. This bulletin explains how potatoes can be cultivated to thrive in the western United States.
Date: 1910
Creator: Grubb, E. H.
Item Type: Refine your search to only Pamphlet
Partner: UNT Libraries Government Documents Department
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The Effects Of Seismic Waves On Structures And Other Facilities

Description: The effects of explosion-induced ground motion must be evaluated in planning and executing any nuclear excavation project. For some projects ground use intensity may dictate the use of less-than-optimum yields to minimize damaging effects. In remote areas, weighing the alternatives of outright purchase of some property or use of smaller yields may be required. The cost of indemnifying owners against damage must be considered in any case. Discussions of the effects of ground motion on three broa… more
Date: April 24, 1964
Creator: Cauthen, Lewis J., Jr.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Proof-of-Concept of the Phytoimmobilization Technology for TNX Outfall Delta: Final Report

Description: A series of proof-of-principle studies was initiated to evaluate the soil remediation technology, phytoimmobilization, for application at the TNX Outfall Delta (TNX OD) operable unit. Phytoimmobilization involves two steps. The first step is entitled phytoextraction, and it takes place mostly during the spring and summer. During this step the plants extract contaminants from the sediment into the roots and then translocate the contaminants to the aboveground plant parts. The second step is refe… more
Date: June 4, 2001
Creator: Kaplan, D.I.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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