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Effects Of Historical Withdrawals On Advective Transport Of Contaminated Ground Waters In A Glacial Drift Aquifer Milford New Hampshire
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Book Synopsis Effects of Historical Withdrawals on Advective Transport of Contaminated Ground Waters in a Glacial-drift Aquifer, Milford, New Hampshire by : Philip T. Harte
Download or read book Effects of Historical Withdrawals on Advective Transport of Contaminated Ground Waters in a Glacial-drift Aquifer, Milford, New Hampshire written by Philip T. Harte and published by . This book was released on 1997 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Effects Of Historical Withdrawals On Advective Transport Of Contaminated Ground Waters In A Glacial-Drift Aquifer, Milford, New Hampshire, USGS FS-162-97, October 1997 by : Geological Survey (U.S.)
Download or read book Effects Of Historical Withdrawals On Advective Transport Of Contaminated Ground Waters In A Glacial-Drift Aquifer, Milford, New Hampshire, USGS FS-162-97, October 1997 written by Geological Survey (U.S.) and published by . This book was released on 1997* with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fact Sheet written by and published by . This book was released on 1997 with total page 414 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis New Publications of the U.S. Geological Survey by :
Download or read book New Publications of the U.S. Geological Survey written by and published by . This book was released on 1998 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Estimating Areas Contributing Recharge to Wells by : O. Lehn Franke
Download or read book Estimating Areas Contributing Recharge to Wells written by O. Lehn Franke and published by . This book was released on 1998 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis U.S. Geological Survey Circular by :
Download or read book U.S. Geological Survey Circular written by and published by . This book was released on 1984 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Effects of Ground-Water Withdrawals on the Rock River and Associated Valley Aquifer, Etc., U.S. Geological Survey, Water-Resources Investigations Report 99-4157, 2000 by :
Download or read book Effects of Ground-Water Withdrawals on the Rock River and Associated Valley Aquifer, Etc., U.S. Geological Survey, Water-Resources Investigations Report 99-4157, 2000 written by and published by . This book was released on 2000 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Simulated Effects of Projected Withdrawals from the Wenonah-Mount Laurel Aquifer on Ground-water Levels in the Camden, New Jersey, Area and Vicinity by : A. S. Navoy
Download or read book Simulated Effects of Projected Withdrawals from the Wenonah-Mount Laurel Aquifer on Ground-water Levels in the Camden, New Jersey, Area and Vicinity written by A. S. Navoy and published by . This book was released on 1994 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :United States. Congress. House. Committee on Public Works and Transportation. Subcommittee on Water Resources Publisher : ISBN 13 : Total Pages :222 pages Book Rating :4.F/5 ( download)
Book Synopsis Contaminated Sediments in Our Nation's Rivers and Harbors, Particularly in the Great Lakes by : United States. Congress. House. Committee on Public Works and Transportation. Subcommittee on Water Resources
Download or read book Contaminated Sediments in Our Nation's Rivers and Harbors, Particularly in the Great Lakes written by United States. Congress. House. Committee on Public Works and Transportation. Subcommittee on Water Resources and published by . This book was released on 1990 with total page 222 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Effects of Ground-water Withdrawals on the Rock River and Associated Valley Aquifer, Eastern Rock County, Minnesota by : Richard J. Lindgren
Download or read book Effects of Ground-water Withdrawals on the Rock River and Associated Valley Aquifer, Eastern Rock County, Minnesota written by Richard J. Lindgren and published by . This book was released on 2000 with total page 103 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Impacts to the n-aquifer from projected municipal and industrial groundwater withdrawals by : Hydro Geo Chem, Inc
Download or read book Impacts to the n-aquifer from projected municipal and industrial groundwater withdrawals written by Hydro Geo Chem, Inc and published by . This book was released on 1993 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Hydrogeology and Simulated Effects of Ground-water Withdrawals, Kirkwood-Cohansey Aquifer System, Upper Maurice River Basin Area, New Jersey by : Stephen J. Cauller
Download or read book Hydrogeology and Simulated Effects of Ground-water Withdrawals, Kirkwood-Cohansey Aquifer System, Upper Maurice River Basin Area, New Jersey written by Stephen J. Cauller and published by . This book was released on 2006 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Effect of Glaciation on Hydraulic Head and Solute Transport in Sedimentary Host Rock Potentialy Used for Nuclear Waste Disposal by :
Download or read book The Effect of Glaciation on Hydraulic Head and Solute Transport in Sedimentary Host Rock Potentialy Used for Nuclear Waste Disposal written by and published by . This book was released on 2014 with total page 580 pages. Available in PDF, EPUB and Kindle. Book excerpt: A Deep Geologic Repository is proposed for a site on the eastern margin of the Michigan Basin at a depth of 680 metres in the Cobourg Formation. A study of the paleo-hydrogeolgical conditions for the area was conducted using numerical simulation of the distribution of natural tracers and the observed hydraulic head. To conduct the study, simulations of the groundwater flow systems were developed for hydraulic head generated from glacial loading cycles to study its effects on advective solute transport. The hydro-mechanical loading during the glacial cycles is assessed using numerical analysis of coupled stress and porewater pressure. The effect of density-dependent flow was assessed in a second study to estimate the degree of penetration of glacially-derived water driven into the basin during periods of glacial loading. Numerical simulations were used to explore the potential freshwater invasion pathways under a variety of conditions. Finally, profiles of -18O and - 2H measured in porewater were combined with our understanding of the paleo-hydrogeological conditions derived from the studies above to test the hypothesis that solute transport was diffusion-dominated in this setting. A series of pure diffusion and advection-diffusion models were developed and the results were compared with profiles of natural water isotopes obtained from the study area. The results of the hydro-mechanical study of glacial impact show the development of significant underpressure during the interstadial periods, especially in the lowest permeability formations. The results also show that the formations have not reached hydrostatic conditions at the present time. These results were verified by comparison to measured environmental heads obtained from the study site. The density-dependent modeling showed that freshwater is capable of reaching the location of the study site through several permeable features. The transport simulations showed that the evolution time starting from a uniform initial condition, and using boundary conditions that are defined by freshwater invasion at several depths agrees with the hydro-geological history of this part of the Basin. The results also show the importance of advection on solute transport from the upper and lower boundaries even in rock of extremely low permeability.
Book Synopsis Hydrologic Effects of Ground and Surface Water Withdrawals in the Howe Area, Lagrange County, Indiana by : Zelda Chapman Bailey, Theodore K. Greeman, E. James Crompton
Download or read book Hydrologic Effects of Ground and Surface Water Withdrawals in the Howe Area, Lagrange County, Indiana written by Zelda Chapman Bailey, Theodore K. Greeman, E. James Crompton and published by . This book was released on 1985 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Potential Impacts of Leakage from Black Rock Reservoir on the Hanford Site Unconfined Aquifer by :
Download or read book Potential Impacts of Leakage from Black Rock Reservoir on the Hanford Site Unconfined Aquifer written by and published by . This book was released on 2008 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Initial scoping calculations of the unconfined aquifer at the Hanford Site were carried out for the U.S. Bureau of Reclamation (USBR) to investigate the potential impacts on the Hanford unconfined aquifer that would result from leakage from the proposed Black Rock Reservoir to the west. Although impacts on groundwater flow and contaminant transport were quantified based on numerical simulation results, the investigation represented a qualitative assessment of the potential lateral recharge that could result in adverse effects on the aquifer. Because the magnitude of the potential leakage is unknown, hypothetical bounding calculations were performed. When a quantitative analysis of the magnitude of the potential recharge from Black Rock Reservoir is obtained, the hydrologic impacts analysis will be revisited. The analysis presented in this report represents initial bounding calculations. A maximum lateral recharge (i.e., upland flux) was determined in the first part of this study by executing steady-state flow simulations that raised the water table no higher than the elevation attained in the Central Plateau during the Hanford operational period. This metric was selected because it assumed a maximum remobilization of contaminants that existed under previous fully saturated conditions. Three steady-state flow fields were then used to analyze impacts to transient contaminant transport: a maximum recharge (27,000 acre-ft/yr), a no additional flux (365 acre-ft/yr), and an intermediate recharge case (16,000 acre-ft/yr). The transport behavior of four radionuclides was assessed for a 300 year simulation period with the three flow fields. The four radionuclides are tritium, iodine-129, technetium-99, and uranium-238. Transient flow and transport simulations were used to establish hypothetical concentration distributions in the subsurface. Using the simulated concentration distributions in 2005 as initial conditions for steady-state flow runs, simulations were executed to investigate the relative effects on contaminant transport from the increased upland fluxes. Contaminant plumes were analyzed for 1) peak concentrations and arrival times at downstream points of compliance, 2) the area of the aquifer contaminated at or above the drinking water standard (DWS), and 3) the total activity remaining in the domain at the end of the simulation. In addition to this analysis, unit source release simulations from a hypothetical tracer were executed to determine relative travel times from the Central Plateau. The results of this study showed that increases in the lateral recharge had limited impact on regional flow directions but accelerated contaminant transport. Although contaminant concentrations may have initially increased for the more mobile contaminants (tritium, technetium-99, and iodine-129), the accelerated transport caused dilution and a more rapid decline in concentrations relative to the Base Case (no additional flux). For the low-mobility uranium-238, higher lateral recharge caused increases in concentration, but these concentrations never approached the DWS. In this preliminary investigation, contaminant concentrations did not exceed the DWS study metric. With the increases in upland fluxes, more mass was transported out of the aquifer, and concentrations were diluted with respect to the base case where no additional flux was considered.
Book Synopsis Scientific Investigations Report by : Sharon E. Kroening
Download or read book Scientific Investigations Report written by Sharon E. Kroening and published by . This book was released on 2004 with total page 122 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Hydrologic Effects on Subsurface Fates and Transport of Contaminants by :
Download or read book Hydrologic Effects on Subsurface Fates and Transport of Contaminants written by and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Concerns over contamination of ground water (GW) and its subsequent effect on surface water quality underscore the need for an improved understanding of the fate and transport of the contaminants in the subsurface. Among the contaminants that are harmful to humans and the environment are nutrient pollutants [e.g., nitrogen (N) and phosphorus (P)] and microbes. The general goal of this research was to evaluate the subsurface fates and transport of contaminants in a vadose zone-GW continuum under various simulated hydrologic conditions through a series of laboratory-scale studies. The first study, which aimed to visually evaluate the effects of GW velocity and water table (WT) fluctuation on the fate and extent of horizontal transport of solutes and microbes in the capillary fringe (CF) and GW, was conducted in a sand-packed flow cell. Subsurface transport of surface-applied solutes and microbes tended to be isolated in the CF at a higher pore-water velocity. A rise in WT resulting from surface recharge of contaminated water occurred without the contaminants reaching the GW. Subsequent drainage did not effectively leach contaminants that were initially in the CF into the GW. The second study assessed the effect of pore-water velocity on the development of reduced conditions in a vadose zone-GW continuum. Reduction potential (Eh) was monitored at various locations in flow cells packed with Ponzer (Terric Haplosaprists), Lynchburg (Aeric Paleaquult), and Leon (Aeric Alaquod) soil materials that were subjected to different lateral pore-water velocities. Regardless of organic carbon (OC) content of the soil materials (12.4 to 195 g kg-1), locations close to the WT became reduced within 14 days. In contrast, the upper portions of the CF remained oxic. Increasing the pore-water velocity also slowed the development of reducing conditions especially in soils with low OC content. The third study was conducted to evaluate the effect of pore-water velocity on the fate and transp.
