groundwater analysis Articles
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Vista Clara delivers slim-line Javelin Wireline to Leibniz Institute of Applied Geophysics in Hanover Germany
In January 2020, Vista Clara President, Dave Walsh, traveled to Hanover, Germany to provide on-site training and support for the Leibniz Institute of Applied Geophysics (LIAG), one of the first customers to deploy the new Javelin 238 Wireline system. LIAG purchased the state-of-the-art Javelin Wireline including both 2.38 (60 mm) inch and 3.5 inch (90 mm) NMR logging tools in order to ...
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Department of Groundwater Resources - Thailand - Case Study
A long time customer of Tecta-PDS, they now have x15 Tecta-B16 instruments installed. The units are used for remote monitoring of groundwater resources around Thailand, compared to previously taking samples from around the country and sending them to the main cities for analysis. The Groundwater Analysis Division at the Department of Groundwater Resources for Thailand has quite a mandate! ...
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Evaluation of site and hydrogeochemistry in an urban groundwater source field
Water demand has increased in metropolitan cities due to fast population growth and industrial development. Jilin City, located in the middle of Jilin province, northeast China, has a population of approximately 4.30 million. The main water source for Jilin City is the Songhua River which has a lot of problems. This study aims to determine the appropriate groundwater resource field for Jilin ...
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Norfolk CC tackle groundwater contamination with low-flow
Quick and easy access in deep wells Geotech low flow groundwater analysis equipment has enabled quick and easy access to samples at 2m intervals down a 28m screen in deep boreholes. Elizabeth Guilford of Norfolk County Council hired the low flow kit from Geotech and used it on a Norfolk CC landfill where leachate contamination of groundwater was suspected. Samples taken at 2m intervals close to ...
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Norfolk County Council tackle groundwater contamination with low-flow - Case Study
Geotech low flow groundwater analysis equipment has enabled quick and easy access to samples at 2m intervals down a 28m screen in deep boreholes. Elizabeth Guilford of Norfolk County Council hired the low flow kit from Geotech and used it on a Norfolk CC landfill where leachate contamination of groundwater was suspected. Samples taken at 2m intervals close to elevation of the suspected ...
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Project - Humber River Watershed Management Plan
Client: Toronto and Region Conservation Authority Don Ford, P.Geo. Manager, Hydrogeology, 5 Shoreham Drive, Downsview, ON M3N1S4 Tel:416-661-6600×5369 dford@trca.on.ca Key Personnel: Dirk Kassenaar and E.J. Wexler Working for the Toronto and Region Conservation Authority (TRCA), Earthfx provided key surface water and groundwater analysis components of the Humber River Watershed Plan. The ...
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Integrating GIS and Groundwater Modeling Technologies for SWAPP Development
Groundwater Modeling and GIS Technologies: Powerful Tools for Data Integration and Analysis Groundwater modeling and Geographic Information System (GIS) technologies are useful tools for developing a Source Water Assessment and Protection Plan (SWAPP) to assist planners in protecting groundwater ...
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A review of groundwater in islands using SWOT analysis
This paper has focused and reviewed the groundwater of 55 islands around the world using Strength, Weakness, Opportunities and Threats (SWOT) analyses selected based on existing literatures and studies conducted. The SWOT analysis output fills in the gap of scientific knowledge and helps in groundwater management. The overall of groundwater management in islands should be conducted by the highest ...
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A new sewage exfiltration model – parameters and calibration
Exfiltration of waste water from sewer systems represents a potential danger for the soil and the aquifer. Common models, which are used to describe the exfiltration process, are based on the law of Darcy, extended by a more or less detailed consideration of the expansion of leaks, the characteristics of the soil and the colmation layer. But, due to the complexity of the exfiltration process, the ...
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Application of set pair analysis based on the improved five-element connectivity in the evaluation of groundwater quality in XuChang, Henan Province, China
The evaluation of groundwater quality plays an important part in the evaluation of groundwater resources. It analyses the temporal and spatial distributions and utilisation of underground water according to the main components and corresponding water quality standards for underground water. Thereby, it can provide a scientific basis for the development, utilisation, planning, and management ...
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Shallow groundwater surrounding the Likeng landfill, Guangzhou, China – major ions and elements indicating the contamination sources
An investigation of groundwater contamination around the Likeng landfill, Guangzhou, was carried out. Major ions and elements of 34 groundwater samples were measured, and the Piper trilinear diagram and expanded Durov diagram were used to analyze the chemical types and hydro-geochemical processes of the groundwater. End Member Mixing Analysis was used to find the types and sources of ...
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Analysis and assessment of confined and phreatic water quality using a rough set theory method in Jilin City, China
In groundwater quality assessments it is easier and more effective to reduce the number of parameters included in water quality indices. A total of 20 quaternary loose rock pore water and tertiary clastic rock cranny pore water data sets were used for Jilin City, China, as basic data, and 10 water quality parameters were selected for reduction using rough set theory and a statistical analysis ...
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Statistical approaches and hydrochemical modelling of groundwater system in a small tropical island
The aquifer of Manukan Island of Borneo, Malaysia had been found to be affected by seawater intrusion associated with excessive groundwater exploitation. This research attempted to characterize the chemistry of an impacted zone in the island using factor analysis (FA), cluster analysis (CA) and a hydrochemical model package (PHREEQC). The factor scores were used to plot the spatial map and to ...
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Geochemical classification of groundwater using multivariate statistical analysis in Latvia
Multivariate statistical methods – principal component analysis (PCA) and hierarchical cluster analysis (HCA) – are applied to identify geochemically distinct groundwater groups in the territory of Latvia. The main processes observed to be responsible for groundwater chemical composition are carbonate and gypsum dissolution, fresh and saltwater mixing and ion exchange. On the basis of major ...
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Mcclellan air force base diffusion
Parsons Engineering Science, Inc. (Parsons ES) was retained by the US Air Force Center for Environmental Excellence Technology Transfer Division (AFCEE/ERT) to perform an evaluation of passive groundwater diffusion sampling technology. The diffusion sampler evaluation was funded under Contract F11623-94-D0024, Delivery Order RL72, as part of the AFCEE/ERT Remedial Process Optimization (RPO) ...
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The public policies for reducing nonpoint water pollution between equity and efficiency
This paper investigates if and how equity and efficiency could be reconciled when improving nitrogen-polluted groundwater of agricultural origin. This is achieved through comparing two pollution control programmes with respect to their costs, water quality impacts and correlation between abatement cost and polluting emissions. The fieldwork was done in a watershed, near the French Alps. It was ...
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The chemical evolution of groundwater in the Kerman plain aquifer, Iran
A comprehensive hydrogeochemical study was carried out in the Kerman Plain Aquifer, Iran. Groundwater samples were collected from 58 sites. Groundwater was analysed for major constituents (Na+, K+, Ca2+, Mg2+, Cl−, SO42− HCO3−. Different methods including composite diagrams, saturation indices and multivariate statistical methods were employed in assessing groundwater quality. ...
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Application of the material flow analysis method for evaluating Strategic Sanitation Plan in Sub-Saharan Africa: the case of Fada N'Gourma–Burkina Faso
In the context of rapid urbanization across Sub-Saharan Africa there is a critical need for more robust decision-making between different ways of providing sanitation services in existing and new peri-urban areas. In several countries, authorities tried to find solutions by developing strategies to address sanitation problems in the form of Strategic Sanitation Plans. In Burkina, Strategic ...
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Determination of water quality index by fuzzy logic approach: a case of ground water in an Indian town
The paper proposes fuzzy logic model that deals with the physico-chemical water analysis of ground water of Chikhli town for determination of Water Quality Index (WQI). The study was carried by collection of ground water samples from about eleven hand pumps located in this town. Ground water quality is studied by systematic collection and analysis of samples. The fuzzy logic is used for the ...
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Environmental isotopic and hydrochemical characteristics of groundwater from the Sandspruit Catchment, Berg River Basin, South Africa
The Sandspruit catchment (a tributary of the Berg River) represents a drainage system, whereby saline groundwater with total dissolved solids (TDS) up to 10,870 mg/l, and electrical conductivity (EC) up to 2,140 mS/m has been documented. The catchment belongs to the winter rainfall region with precipitation seldom exceeding 400 mm/yr, as such, groundwater recharge occurs predominantly from May ...
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