Gotowe bibliografie tematyczne / Contamination hydrology

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Gotowa bibliografia na temat „Contamination hydrology”

Autor: Grafiati
Data publikacji: 6 września 2023

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Artykuły w czasopismach na temat "Contamination hydrology"

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Field, Malcolm S. "Karst Hydrology and Chemical Contamination". Journal of Environmental Systems 22, nr 1 (1.01.1992): 1–26. http://dx.doi.org/10.2190/x7mv-c93e-66gk-bfh7.

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Esselman, Peter, Shiguo Jiang, Henry Peller, David Buck i Joel Wainwright. "Landscape Drivers and Social Dynamics Shaping Microbial Contamination Risk in Three Maya Communities in Southern Belize, Central America". Water 10, nr 11 (17.11.2018): 1678. http://dx.doi.org/10.3390/w10111678.

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Land transformation can have cascading effects on hydrology, water quality, and human users of water resources, with serious implications for human health. An interdisciplinary analysis is presented, whereby remote-sensing data of changing land use and cover are related to surface hydrology and microbial contamination in domestic use areas of three indigenous Maya communities in Belize, Central America. We asked whether a departure from traditional land-use patterns toward intensified use led to consequences for hydrology and microbial contamination of drinking water, and investigated how social factors in the three study communities may act to ameliorate human health risks associated with water contamination. We showed that a departure from traditional land use to more intensive cultivation and grazing led to significantly increased surface water runoff, and intensified microbial contamination of surface water sources sometimes used for drinking. Results further suggested that groundwater contamination was widespread regardless of land cover, due to the widespread presence of pit latrines, pigs, and cows on the landscape, and that human users were consistently subject to health risks from potential pathogens as a result. Given that both surface and groundwater resources were found to be contaminated, it is important that water distribution systems (piped water from tanks; shallow and deep wells) be monitored for Escherichia coli and treated when necessary to reduce or eliminate contaminants and protect public health. Results of interviews suggested that strengthened capacity within the communities to monitor and treat centralized drinking water sources and increase water treatment at the point of use could lead to reduced risk to water consumers.
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Bennett, Gary F. "Groundwater Contamination: Vol. 1. Contamination, Sources & Hydrology; Vol. 2. Management, Containment, Risk Assessment & Legal Issues". Journal of Hazardous Materials 80, nr 1-3 (grudzień 2000): 274–75. http://dx.doi.org/10.1016/s0304-3894(00)00284-3.

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Huang, Tao, Wilfred M. Wollheim i Stephen H. Jones. "Removal of Fecal Indicator Bacteria by River Networks". Water 14, nr 4 (17.02.2022): 617. http://dx.doi.org/10.3390/w14040617.

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Fecal contamination is a significant source of water quality impairment globally. Aquatic ecosystems can provide an important ecosystem service of fecal contamination removal. Understanding the processes that regulate the removal of fecal contamination among river networks across flow conditions is critical. We applied a river network model, the Framework for Aquatic Modeling in the Earth System (FrAMES-Ecoli), to quantify removal of fecal indicator bacteria by river networks across flow conditions during summers in a series of New England watersheds of different characteristics. FrAMES-Ecoli simulates sources, transport, and riverine removal of Escherichia coli (E. coli). Aquatic E. coli removal was simulated in both the water column and the hyporheic zone, and is a function of hydraulic conditions, flow exchange rates with the hyporheic zone, and die-off in each compartment. We found that, at the river network scale during summers, removal by river networks can be high (19–99%) with variability controlled by hydrologic conditions, watershed size, and distribution of sources in the watershed. Hydrology controls much of the variability, with 68–99% of network scale inputs removed under base flow conditions and 19–85% removed during storm events. Removal by the water column alone could not explain the observed pattern in E. coli, suggesting that processes such as hyporheic removal must be considered. These results suggest that river network removal of fecal indicator bacteria should be taken into consideration in managing fecal contamination at critical downstream receiving waters.
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Squillace, Paul J., i E. M. Thurman. "Herbicide transport in rivers: importance of hydrology and geochemistry in nonpoint-source contamination". Environmental Science & Technology 26, nr 3 (marzec 1992): 538–45. http://dx.doi.org/10.1021/es00027a015.

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Ansari, Md Arzoo, U. Saravana Kumar, Jacob Noble, Naima Akhtar, M. Arslaan Akhtar i Archana Deodhar. "Isotope hydrology tools in the assessment of arsenic contamination in groundwater: An overview". Chemosphere 340 (listopad 2023): 139898. http://dx.doi.org/10.1016/j.chemosphere.2023.139898.

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Rees, W. G. "Remote sensing of oil spills on frozen ground". Polar Record 35, nr 192 (styczeń 1999): 19–24. http://dx.doi.org/10.1017/s0032247400026292.

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AbstractRemote-sensing methods, using electromagnetic radiation detected by airborne and spaceborne instruments, have the potential to revolutionise the investigation of oil contamination in high latitudes. Spaceborne monitoring, in particular, offers many advantages, including: obtaining data from relatively inaccessible areas; day and night, all-weather observations; regular monitoring opportunities; spatial resolution of 20 m or better; and areal coverage of 30,000 square kilometres or more. Calibrated, spatially registered data can be readily integrated into geographic information systems for evaluation and prediction of spill behaviour. However, very little investigation of this potential has yet been undertaken. This paper reviews the possibilities for monitoring soil characteristics, including thermal regime, the presence of contamination, and long-term consequences of spills, for topography, hydrology, and vegetation cover.
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KONDOH, Akihiko, Masaya YASUHARA i Seongwon LEE. "Special Issue: "Nitrogen contamination in environmental water - role of hydrology as an integrated science -"". Journal of Japanese Association of Hydrological Sciences 41, nr 3 (2011): 47–48. http://dx.doi.org/10.4145/jahs.41.47.

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Tyler, Scott W. "Are Arid Regions Always that Appropriate for Waste Disposal? Examples of Complexity from Yucca Mountain, Nevada". Geosciences 10, nr 1 (14.01.2020): 30. http://dx.doi.org/10.3390/geosciences10010030.

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The study of the hydrology of arid regions greatly expanded at the end of the 20th century as humans sought to reduce groundwater pollution from landfills, waste dumps and other forms of land disposal. Historically viewed as wastelands where little or no water percolated to the underlying water table, the discovery of large-scale contamination beneath arid disposal sites such as the Hanford nuclear complex in eastern Washington jumpstarted an industry in studying the hydrology of arid vadose zones and their transport behavior. These studies showed that, in spite of hyper aridity in many areas, precipitation often did infiltrate to deep water. The efforts at Yucca Mountain, Nevada to design a high-level nuclear repository stand out as one of the largest of such studies, and one that fundamentally changed our understanding of not only water flow in fractured rocks, but also of the range of our uncertainty of hydrologic processes in arid regions. In this review and commentary, we present some of the initial concepts of flow at Yucca Mountain, and the evolution in research to quantify the concepts. In light of continued stockpiling of high-level waste, and the renewed interest in opening Yucca Mountain for high-level waste, we then focus on the significant surprises and unanswered questions that remained after the end of the characterization and licensing period; questions that continue to demonstrate the challenges of a geologic repository and our uncertainty about critical processes for long-term, safe storage or disposal of some of our most toxic waste products.
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Dadfar, H., S. E. Allaire, R. De Jong, E. van Bochove, J. T. Denault, G. Thériault i F. Dechmi. "Development of a method for estimating the likelihood of crack flow in Canadian agricultural soils at the landscape scale". Canadian Journal of Soil Science 90, nr 1 (1.02.2010): 129–49. http://dx.doi.org/10.4141/cjss09066.

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Indicators of risk of water contamination by agricultural pollutants are developed in Canada to assess sustainability of agriculture. Crack flow (CF), a key pathway for sub-surface contaminant transport, is part of the transport-hydrology algorithm used in two of these risk indicators. The objective was to develop a methodology for predicting the likelihood of CF in Canadian agricultural soils at the landscape scale. The algorithm considers soil clay content, crack development followed by a runoff event based on water budget, tile drainage, and crops. More than 40% of Canadian farmlands had moderate to very high likelihood of CF, mainly in Manitoba, Ontario and Quebec, due to frequent runoffs on cracked clay soils potentially contributing to groundwater contamination. In Ontario and Quebec, farmlands with high CF likelihood correspond to regions under intensive tile drainage, which increases the risk of lateral translocation of contaminants to surface water bodies. Besides being a component of risk indicators of water contamination by phosphorus and coliforms, the CF algorithm and maps can be used to identify areas at risk of subsurface water contamination. Best management practices, adapted to reduce CF can then be targeted to these areas.Key words: Agrichemicals, contaminant transport, macropore flow, preferential flow, risk assessment, risk indicators
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Rozprawy doktorskie na temat "Contamination hydrology"

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Hussein, Maged M. "Impact of ground-water contamination on the Great Miami River basin /". The Ohio State University, 1997. http://rave.ohiolink.edu/etdc/view?acc_num=osu148794815862844.

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Hebert, Kevin D. "Site Investigation of Underground Storage Tank Contamination". Arizona-Nevada Academy of Science, 1990. http://hdl.handle.net/10150/296431.

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From the Proceedings of the 1990 Meetings of the Arizona Section - American Water Resources Association and the Hydrology Section - Arizona-Nevada Academy of Science - April 21, 1990, Arizona State University, Tempe, Arizona
New regulations concerning the management of underground storage tanks (USTs) have resulted in increased awareness of environmental contamination resulting from leaking USTs. The objective of the typical underground storage tank investigation is to determine if any subsurface contamination has occurred as a result of tank or product line leakage, fuel spills or overfills. Soil contamination at underground storage tank sites is usually discovered during the removal and replacement of USTs. Techniques that can be used to detect the presence of soil contamination adjacent to existing USTs include soil vapor analysis, exploratory boring, and soil and ground water sampling. The lateral and vertical extent of contamination must be determined at any site which contains detectable quantities of contamination. Two common methods for determining the extent of contamination are over-excavation and borehole drilling and sampling. Boring design and location considerations include number of borings, borehole depth and spacing, and site sub -surface conditions. Differentiation between perched sub -surface water and aquifers is critical. Once an appropriate boring plan has been established, then a sampling and analysis plan must be adopted that meets the needs of the particular investigation. The determination of the extent of contamination at an underground storage tank site is the first step leading to site closure and remediation.
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Journell, Scot. "Site Remediation of Underground Storage Tank Contamination". Arizona-Nevada Academy of Science, 1990. http://hdl.handle.net/10150/296432.

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From the Proceedings of the 1990 Meetings of the Arizona Section - American Water Resources Association and the Hydrology Section - Arizona-Nevada Academy of Science - April 21, 1990, Arizona State University, Tempe, Arizona
Remedial techniques for sub-surface soil and water contamination are dependent on the lateral and vertical extent of petroleum hydrocarbon contamination and the type of petroleum hydrocarbons which have been released into the sub-surface. Specific remedial technologies are required for diesel fuel and heavy oils compared to the more volatile gasoline compounds. Available remedial technologies for vadose zone contamination include excavation and treatment; soil vapor extraction and possible vapor burning; bioremediation; and chemical treatment. Remedial technologies for ground-water contamination include water recovery, contaminant volatilization, carbon adsorption, bioremediation and water reinjection. Specialized apparatuses are utilized when petroleum hydrocarbon product floating on the water table surface must be separated from the ground water. A number of hydrologic considerations must be evaluated prior to any remediation scenario. These considerations include geologic characterization of the sub-surface soil matrix, and aquifer.
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Gerba, Charles P. "Microbial Contamination of Groundwater by Landfills: Risk Assessment". Arizona-Nevada Academy of Science, 1986. http://hdl.handle.net/10150/296388.

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From the Proceedings of the 1986 Meetings of the Arizona Section - American Water Resources Association, Hydrology Section - Arizona-Nevada Academy of Science and the Arizona Hydrological Society - April 19, 1986, Glendale Community College, Glendale, Arizona
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Rivard, Donald T., Martin M. Karpiscak, K. James DeCook, Glenn W. France i Donald E. Osborn. "Water Contamination Sites in the Southwest: Compiling a Data Base". Arizona-Nevada Academy of Science, 1988. http://hdl.handle.net/10150/296421.

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From the Proceedings of the 1988 Meetings of the Arizona Section - American Water Resources Association and the Hydrology Section - Arizona-Nevada Academy of Science - April 16, 1988, University of Arizona, Tucson, Arizona
The University of Arizona, under a contract from the Solar Energy Research Institute (SERI), investigated water contamination problems in six Southwestern States -- Arizona, California, Colorado, New Mexico, Oklahoma, and Texas. A variety of surface and groundwater problems were encountered, including 1) high total dissolved solids (TDS) concentrations, 2) contamination by organic compounds, 3) contamination due to high concentrations of inorganic compounds, 4) biological contamination, 5) radioactive contamination, and 6) toxic and hazardous waste disposal. Literature and computer searches provided an overview of existing problems, but no central depository of information on water contamination problems was found to exist. Specific information was obtained from federal, state, and local government agencies concerned with water quality. Data were collected via telephone interviews, letters, and in- person office visits. Limitations inherent in these data collection methods included, 1) not knowing if all the correct contacts were made concerning a specific problem or site, 2) inability to ascertain whether all contacts were willing and /or able to supply complete, accurate, and updated information, 3) possible bypassing of important data sources, and 4) delays in receiving reports and materials by mail from telephone contacts. Findings indicate that many localities in the Southwest have water contamination problems in some form; more than sixty sites have been described to date.
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Sprouse, Terry, Dennis Cory i Robert Varady. "Aquifer Contamination and Safe Drinking Water: The Recent Santa Cruz County Experience". Arizona-Nevada Academy of Science, 1996. http://hdl.handle.net/10150/297005.

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Seadler, Kathryn. "Atrazine Contamination in a Rural Source-Water Supply: Spa Lake, Lewisburg, Kentucky". TopSCHOLAR®, 2004. http://digitalcommons.wku.edu/theses/515.

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In 1998, Western Kentucky University (WKU) worked in collaboration with the Environmental Protection Agency (EPA), Drinking Water Protection Division, to investigate methods to improve source-water quality for rural-water supply systems (RWSS). Through partial funding from the EPA, WKU developed a Technical Assistance Center for Water Quality (TACWQ), which focused resources and expertise toward assisting RWSS in achieving and maintaining capacity development goals and protecting public health. The TACWQ established the Source Water Protection Initiative (SWPI) to assist RWSS in acquiring and monitoring the technical, financial and managerial capacity needed to provide safe drinking water and achieve the public health protection goals of the EPA Safe Drinking Water Act (Technical Assistance Center, July 1998). The SWPI also provided technical assistance toward identifying and reducing source water impacts throughout Kentucky. Monthly sampling during 2000 from seven watersheds in western and south central Kentucky showed that levels of several pesticides and herbicides were elevated above Maximum Contaminant Levels (MCLs) in their source waters. Of the MCL exceedences, three commonly used pesticides (atrazine, alachlor, and simazine) were repeatedly being detected at several sites. Of the three compounds, atrazine, a triazineclass herbicide widely used in Kentucky to control broad leaf and grassy weeds in row crops such as corn, drew the most interest. Atrazine has been classified as a spring use only, "Restricted Use Pesticide due to its potential for groundwater contamination." (EXTOXNET, 1996) It is regulated as a compound with class III (slight) toxicity. In 1994, EPA took atrazine under special review to evaluate the ecological and biological effects it may cause. EPA later deemed atrazine not to significantly increase the risk of cancer in humans and went as far as lifting its use restrictions. Independent researchers still dispute EPA claims. The exceedences of the MCLs by many compounds in source water do not immediately result in violations. The source water must go through treatment processes. Water-supply operators must strive to meet National Primary Drinking Water Standards (EPA, 1999) prior to going to the consumer. However, the fundamental concept driving the SWPI is that the technical and financial challenges faced by RWSS are proportional to the quality of their source water. At several sites, even treated water that was distributed to customers exceeded federally mandated MCLs. Levels of atrazine in finished water reached 17 parts per billion (ppb) in Lewisburg, Kentucky. The MCL for atrazine is currently 3.0 ppb.
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Aubin, Eric. "Impact of water table management on ground water contamination by two herbicides". Thesis, McGill University, 1994. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=55410.

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Two field investigations were undertaken to study the role of water table management in reducing herbicide pollution of ground water. One of the three-year studies (1992-1995) was conducted in a sandy field near Joliette (Laurin farm), (Quebec) to monitor the herbicide metribuzin where potatoes were grown. Two water table management systems were evaluated, namely subsurface drainage and subirrigation. Soil and ground water samples were taken at two week intervals, once before and six times after the herbicide application.
The amount of rainfall received in the first few weeks following herbicide application is crucial in assessing the extent of ground water contamination. In 1992, fewer rainfall events occurred after the application as compared to 1993, so metribuzin leached slowly. In 1992, it appears that subirrigation reduced ground water contamination by a factor of 10 through enhanced degradation and the greater effect of dilution. However, the role of subirrigation in reducing the metribuzin contamination of ground water was negligible in 1993 due to considerable leaching soon after the application.
The second project was conducted in an organic soil in St-Patrice-de-Sherrington (Van Winden farm) where the herbicide prometryn was studied. Surface irrigation with a controlled water table was also used as a water table management system. One experimental unit was used for each of the three treatments (subirrigation, surface irrigation and subsurface drainage).
The herbicide application rate was greater at the Van Winden farm than in the Laurin farm (5.5 kg/ha versus 1.0 kg/ha). However, a higher adsorption coefficient of the organic soil minimized the leaching process. Ground water contamination was less extensive in the organic deposit. The effect of subirrigation in reducing ground water contamination was significant when the water table was shallow. Prometryn degradation was relatively slow during the summer. Moreover, significant amounts of prometryn carried-over into the soil after the winter season, so it appears to be a quite persistent herbicide in our climate.
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MILLER, ANDREW JOSEPH. "SIMULATING AGRICULTURAL CONTAMINATION THROUGH THE EAST FORK LITTLE MIAMI RIVER WATERSHED USING THE BASINS GIS PACKAGE". University of Cincinnati / OhioLINK, 2003. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1069778956.

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Jurek, Anne C. "Vulnerability of groundwater to perchloroethylene contamination from dry cleaners in the Niles Cone Groundwater Basin, southern Alameda County, California". Thesis, San Jose State University, 2014. http://pqdtopen.proquest.com/#viewpdf?dispub=1567998.

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Releases of perchloroethylene (PCE) from dry cleaners pose a threat to groundwater quality. An assessment was performed of the Niles Cone Groundwater Basin to determine its vulnerability to PCE contamination from both historic and more recently operating dry cleaners. Sensitivity assessments of the Basin's two subbasins were performed using a modification of the DRASTIC Index Method, whereby the hydrogeological variables of depth to water, aquifer media, vadose zone media, and soil drainage classification were represented by a range of sensitivity categories and ratings assigned to each range. A source assessment was performed by identifying the locations of historic and presently operating dry-cleaning plants and assigning a threat ranking to each based on the approximate years in which the four generations of dry-cleaning machinery were introduced. Using ArcGIS, the sensitivity assessments and the source assessment were mapped, and the source assessment was superimposed over the sensitivity maps to create vulnerability maps of the two subbasins. The most sensitive area of the Below Hayward Fault subbasin in the forebay area near the Hayward Fault is due to a higher proportion of coarse-grained aquifer and vadose zone media and a thinner to absent aquitard due to deposition from the Alameda Creek. The existence of dry cleaners of higher threat makes this an area that is vulnerable to PCE contamination.

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Książki na temat "Contamination hydrology"

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Konieczki, A. D. Hydrologic data from the study of acidic contamination in the Miami Wash-Pinal Creek area, Arizona, water years 1994-96. Tucson, Ariz: U.S. Dept. of the Interior, U.S. Geological Survey, 1997.

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Konieczki, A. D. Hydrologic data from the study of acidic contamination in the Miami Wash-Pinal Creek area, Arizona, water years 1994-96. Tucson, Ariz: U.S. Dept. of the Interior, U.S. Geological Survey, 1997.

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Katherine, Balshaw-Biddle, Oubre Carroll L i Ward, C. H. (Calvin Herbert), 1933-, red. Subsurface contamination monitoring using laser fluorescence. Boca Raton, FL: Lewis Publishers, 2000.

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Nghiem, Athena Anh-Thu. Data-driven approaches to linking hydrology, mineralogy, and biogeochemistry of groundwater arsenic contamination from grain to basin scale. [New York, N.Y.?]: [publisher not identified], 2022.

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1956-, Brown James G., i Favor Barbara O, red. Hydrology and geochemistry of aquifer and stream contamination related to acidic water in Pinal Creek Basin near Globe, Arizona. Washington: U.S. G.P.O., 1996.

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Morganwalp, David William. Bibliography of publications from the Toxic Substances Hydrology Program, U.S. Geological Survey. Tallahassee, Fla: U.S. Geological Survey, 1994.

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Ravbar, Nataša. The protection of karst waters: A comprehensive Slovene approach to vulnerability and contamination risk mapping = Varovanje kraških voda : obširen slovenski proistop h kartiranju ranljivosti in tveganja za onesnaženje. Postojna: Inštitut za raziskovanje krasa ZRC SAZU, 2007.

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American Society of Mechanical Engineers., Institute for Regulatory Science, American Society of Mechanical Engineers. Center for Research and Technology Development. i United States. Dept. of Energy. Office of Science and Technology., red. Strategy for remediation of groundwater contamination at the Nevada Test Site: Technical peer review report, report of the review panel. [New York]: American Society of Mechanical Engineers, 2001.

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Schlottmann, Jamie L. Reconnaissance of the hydrology, water quality, and sources of bacterial and nutrient contamination in the Ozark Plateaus aquifer system and Cave Springs Branch of Honey Creek, Delaware County, Oklahoma, March 1999-March 2000. Oklahoma City, OK: U.S. Dept. of the Interior, U.S. Geological Survey, 2000.

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Schlottmann, Jamie L. Reconnaissance of the hydrology, water quality, and sources of bacterial and nutrient contamination in the Ozark Plateaus aquifer system and Cave Springs Branch of Honey Creek, Delaware County, Oklahoma, March 1999-March 2000. Oklahoma City, OK: U.S. Dept. of the Interior, U.S. Geological Survey, 2000.

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Części książek na temat "Contamination hydrology"

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Bobba, A. Ghosh, i Vijay P. Singh. "Groundwater contamination modelling". W Environmental Hydrology, 225–319. Dordrecht: Springer Netherlands, 1995. http://dx.doi.org/10.1007/978-94-017-1439-6_8.

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Sharma, M. L. "Impact of Agriculture on Nutrient Contamination of Water Resources". W Water-Quality Hydrology, 57–79. Dordrecht: Springer Netherlands, 1996. http://dx.doi.org/10.1007/978-94-011-0393-0_5.

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Bobba, A. Ghosh, i Vijay P. Singh. "Application of Monte Carlo Analysis to Saturated Subsurface Contamination Modelling". W Water-Quality Hydrology, 197–213. Dordrecht: Springer Netherlands, 1996. http://dx.doi.org/10.1007/978-94-011-0393-0_13.

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Kanwar, Rameshwar S. "Use of Tracers and Dyes to Assess Ground Water Contamination Potential for Glacial Till Aquifers". W Water-Quality Hydrology, 177–86. Dordrecht: Springer Netherlands, 1996. http://dx.doi.org/10.1007/978-94-011-0393-0_11.

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Freeze, R. Allen. "Groundwater contamination: Technical analysis and social decision making". W Reflections on Hydrology: Science and Practice, 146–82. Washington, D. C.: American Geophysical Union, 1997. http://dx.doi.org/10.1029/sp048p0146.

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Serrano, Sergio E. "Semigroup and Decomposition Methods in Solving Stochastic Subsurface Contamination Problems". W Stochastic Methods in Subsurface Contaminant Hydrology, 307–26. Reston, VA: American Society of Civil Engineers, 2002. http://dx.doi.org/10.1061/9780784405321.ch08.

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Galitskaya, Irina, Irina Pozdnyakova, Irina Kostikova i Leonid Toms. "Hydrogeological Windows Impact on Groundwater Contamination in Moscow". W Advances in Sustainable and Environmental Hydrology, Hydrogeology, Hydrochemistry and Water Resources, 137–39. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-01572-5_34.

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Khaled-Khodja, Soumeya, Semia Cherif i Karima Rouibah. "Contamination of Annaba bay (northeastern extremity of Algeria) by multi-pesticide residues". W Advances in Sustainable and Environmental Hydrology, Hydrogeology, Hydrochemistry and Water Resources, 129–32. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-01572-5_32.

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Bülbül, Ali, Tuğbanur Özen Balaban i Gültekin Tarcan. "Evaluation of the Contamination from Geothermal Fluids upon Waters and Soils in Alaşehir Environs, Turkey". W Advances in Sustainable and Environmental Hydrology, Hydrogeology, Hydrochemistry and Water Resources, 157–60. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-01572-5_39.

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Saadali, Badreddine, Naouel Mihoubi, Amira Ouddah i Yasmina Bouroubi. "Organic Pollutants Evolution and Degrees of Contamination of Hammam Grouz Dam Waters, North-East of Algeria". W Advances in Sustainable and Environmental Hydrology, Hydrogeology, Hydrochemistry and Water Resources, 145–48. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-01572-5_36.

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Streszczenia konferencji na temat "Contamination hydrology"

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Ayub, Riyana, Daniel R. Obenour, Kyle P. Messier, Marc L. Serre i Kumar Mahinthakumar. "Non-Point Source Evaluation of Groundwater Contamination from Agriculture under Geologic and Hydrologic Uncertainty". W World Environmental and Water Resources Congress 2016. Reston, VA: American Society of Civil Engineers, 2016. http://dx.doi.org/10.1061/9780784479865.035.

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Smith, Bruce D., Joanna N. Thamke i Christa Tyrrell. "Geophysical and Hydrologic Studies of Shallow Aquifer Contamination, East Poplar Oil Field Area, Northeastern Montana". W Symposium on the Application of Geophysics to Engineering and Environmental Problems 2006. Environment and Engineering Geophysical Society, 2006. http://dx.doi.org/10.4133/1.2923564.

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D. Smith, Bruce, Joanna N. Thamke i Christa Tyrrell. "GEOPHYSICAL AND HYDROLOGIC STUDIES OF SHALLOW AQUIFER CONTAMINATION, EAST POPLAR OIL FIELD AREA, NORTHEASTERN MONTANA". W 19th EEGS Symposium on the Application of Geophysics to Engineering and Environmental Problems. European Association of Geoscientists & Engineers, 2006. http://dx.doi.org/10.3997/2214-4609-pdb.181.10.

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Jansik, Danielle, Dawn M. Wellman, Shas V. Mattigod, Lirong Zhong, Yuxin Wu, Martin Foote, Fred Zhang i Susan Hubbard. "Foam: Novel Delivery Technology for Remediation of Vadose Zone Environments". W ASME 2011 14th International Conference on Environmental Remediation and Radioactive Waste Management. ASMEDC, 2011. http://dx.doi.org/10.1115/icem2011-59019.

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Deep vadose zone environments can be a primary source and pathway for contaminant migration to groundwater. These environments present unique characterization and remediation challenges that necessitate scrutiny and research. The thickness, depth, and intricacies of the deep vadose zone, combined with a lack of understanding of the key subsurface processes (e.g., biogeochemical and hydrologic) affecting contaminant migration, make it difficult to create validated conceptual and predictive models of subsurface flow dynamics and contaminant behavior across multiple scales. These factors also make it difficult to design and deploy sustainable remedial approaches and monitor long-term contaminant behavior after remedial actions. Functionally, methods for addressing contamination must remove and/or reduce transport of contaminants. This problem is particularly challenging in the arid western United States where the vadose zone is hundreds of feet thick, rendering transitional excavation methods exceedingly costly and ineffective. Delivery of remedial amendments is one of the most challenging and critical aspects for all remedy-based approaches. The conventional approach for delivery is through heterogeneous deep vadose zone environments present hydrologic and geochemical challenges that limit the effectiveness. Because the flow of solution infiltration is dominantly controlled by gravity and suction, injected liquid preferentially percolates through highly permeable pathways, by-passing low-permeability zones that frequently contain the majority of contamination. Moreover, the wetting front can readily mobilize and enhance contaminant transport to the underlying aquifer prior to stabilization. Development of innovative in-situ technologies may be the only means to meet remedial action objectives and long-term stewardship goals. Surfactants can be used to lower the liquid surface tension and create stabile foams, which readily penetrate low permeability zones. Although surfactant foams have been used for subsurface mobilization efforts in the oil and gas industry, thus far the concept of using foams as a delivery mechanism for transporting remedial amendments into deep vadose zone environments to stabilize metal and long-lived radionuclide contaminants has not been explored. Foam flow can be directed by pressure gradients, rather than being dominated by gravity; and foam delivery mechanisms limit the volume of water (< 5% vol.) required for remedy delivery and emplacement, thus mitigating contaminant mobilization. We will present the results of a numerical modeling and integrated laboratory-/intermediate-scale investigation to simulate, develop, demonstrate, and monitor (i.e., advanced geophysical techniques and advanced predictive biomarkers) foam-based delivery of remedial amendments to remediate metals and radionuclides in vadose zone environments.
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Pierce, Larry, i Honglin Shi. "Evaluation of Veterinary Pharmaceuticals and Iodine for Use as a Groundwater Tracer in Hydrologic Investigation of Contamination Related to Dairy Cattle Operations". W National Cave and Karst Research Institute Symposium 5. University of South Florida Tampa Library, 2015. http://dx.doi.org/10.5038/9780991000951.1013.

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Wellman, Dawn M., Shas V. Mattigod, Susan Hubbard, Ann Miracle, Lirong Zhong, Martin Foote, Yuxin Wu i Danielle Jansik. "Advanced Remedial Methods for Metals and Radionuclides in Vadose Zone Environments". W ASME 2010 13th International Conference on Environmental Remediation and Radioactive Waste Management. ASMEDC, 2010. http://dx.doi.org/10.1115/icem2010-40235.

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Functionally, the methods for addressing contamination must remove and/or reduce transport or toxicity of contaminants. This problem is particularly challenging in arid environments where the vadose zone can be up to hundreds of feet thick, rendering transitional excavation methods exceedingly costly and ineffective. Delivery of remedial amendments is one of the most challenging and critical aspects for all remedy-based approaches. The conventional approach for delivery is through injection of aqueous remedial solutions. However, heterogeneous vadose zone environments present hydrologic and geochemical challenges that limit the effectiveness. Because the flow of solution infiltration is dominantly controlled by gravity and suction, injected liquid preferentially percolates through highly permeable pathways, by-passing low-permeability zones which frequently contain the majority of the contamination. Moreover, the wetting front can readily mobilize and enhance contaminant transport to underlying aquifers prior to stabilization. Development of innovative, in-situ technologies may be the only way to meet remedial action objectives and long-term stewardship goals. Shear-thinning fluids (i.e., surfactants) can be used to lower the liquid surface tension and create stabile foams, which readily penetrate low permeability zones. Although surfactant foams have been utilized for subsurface mobilization efforts in the oil and gas industry, so far, the concept of using foams as a delivery mechanism for transporting reactive remedial amendments into deep vadose zone environments to stabilize metal and long-lived radionuclide contaminants has not been explored. Foam flow can be directed by pressure gradients, rather than being dominated by gravity; and, foam delivery mechanisms limit the volume of water (&lt; 20% vol.) required for remedy delivery and emplacement, thus mitigating contaminant mobilization. We will present the results of a numerical modeling and integrated laboratory-/intermediate-scale investigation to simulate, develop, demonstrate, and monitor (i.e. advanced geophysical techniques and advanced predictive microbial markers) foam-based delivery of remedial amendments to remediate metals and radionuclides in vadose zone environments.
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Raporty organizacyjne na temat "Contamination hydrology"

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Russo, David, Daniel M. Tartakovsky i Shlomo P. Neuman. Development of Predictive Tools for Contaminant Transport through Variably-Saturated Heterogeneous Composite Porous Formations. United States Department of Agriculture, grudzień 2012. http://dx.doi.org/10.32747/2012.7592658.bard.

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The vadose (unsaturated) zone forms a major hydrologic link between the ground surface and underlying aquifers. To understand properly its role in protecting groundwater from near surface sources of contamination, one must be able to analyze quantitatively water flow and contaminant transport in variably saturated subsurface environments that are highly heterogeneous, often consisting of multiple geologic units and/or high and/or low permeability inclusions. The specific objectives of this research were: (i) to develop efficient and accurate tools for probabilistic delineation of dominant geologic features comprising the vadose zone; (ii) to develop a complementary set of data analysis tools for discerning the fractal properties of hydraulic and transport parameters of highly heterogeneous vadose zone; (iii) to develop and test the associated computational methods for probabilistic analysis of flow and transport in highly heterogeneous subsurface environments; and (iv) to apply the computational framework to design an “optimal” observation network for monitoring and forecasting the fate and migration of contaminant plumes originating from agricultural activities. During the course of the project, we modified the third objective to include additional computational method, based on the notion that the heterogeneous formation can be considered as a mixture of populations of differing spatial structures. Regarding uncertainly analysis, going beyond approaches based on mean and variance of system states, we succeeded to develop probability density function (PDF) solutions enabling one to evaluate probabilities of rare events, required for probabilistic risk assessment. In addition, we developed reduced complexity models for the probabilistic forecasting of infiltration rates in heterogeneous soils during surface runoff and/or flooding events Regarding flow and transport in variably saturated, spatially heterogeneous formations associated with fine- and coarse-textured embedded soils (FTES- and CTES-formations, respectively).We succeeded to develop first-order and numerical frameworks for flow and transport in three-dimensional (3-D), variably saturated, bimodal, heterogeneous formations, with single and dual porosity, respectively. Regarding the sampling problem defined as, how many sampling points are needed, and where to locate them spatially in the horizontal x₂x₃ plane of the field. Based on our computational framework, we succeeded to develop and demonstrate a methdology that might improve considerably our ability to describe quntitaively the response of complicated 3-D flow systems. The results of the project are of theoretical and practical importance; they provided a rigorous framework to modeling water flow and solute transport in a realistic, highly heterogeneous, composite flow system with uncertain properties under-specified by data. Specifically, they: (i) enhanced fundamental understanding of the basic mechanisms of field-scale flow and transport in near-surface geological formations under realistic flow scenarios, (ii) provided a means to assess the ability of existing flow and transport models to handle realistic flow conditions, and (iii) provided a means to assess quantitatively the threats posed to groundwater by contamination from agricultural sources.
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Hydrology and geochemistry of aquifer and stream contamination related to acidic water in Pinal Creek basin near Globe, Arizona. US Geological Survey, 1996. http://dx.doi.org/10.3133/wsp2466.

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Reconnaissance of the hydrology, water quality, and sources of bacterial and nutrient contamination in the Ozark Plateaus aquifer system and Cave Springs Branch of Honey Creek, Delaware County, Oklahoma, March 1999-March 2000. US Geological Survey, 2000. http://dx.doi.org/10.3133/wri004210.

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Ground-water contamination by crude oil: Section B in U.S. Geological Survey Toxic Substances Hydrology Program: Proceedings of the technical meeting, Charleston, South Carolina, March 8-12, 1999: Volume 3 (Part C). US Geological Survey, 1999. http://dx.doi.org/10.3133/wri994018cb.

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