contamination mapping Articles
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Kartotrak allows Dekra to justify undoubtely their conclusions
Problematics “Our work is to provide our clients with the elements of decision they need to prepare site management plans for future remediation. Before we decided to include geostatistical approach in our projects, we were used to produce contamination maps based on very simple interpolation methods and empirical calculations. We needed a rational solution which enabled us to justify ...
By Geovariances
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Evaluation of various bioindication methods of measuring zinc environmental pollution
This study was undertaken to assess the potential ability of four distinct bioindication methods to monitor zinc pollution levels. The study area was the region around the town of Olkusz, one of the oldest centres of the metallurgic industry in Europe. The four bioindication methods used for the assessment of zinc levels were the moss–bag method and the measurement of metal accumulation in ...
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Kartotrak.one, The Easy Route to Site Remediation
Geovariances launches Kartotrak.one, an easy-to-use and fast application for thorough data quality control and accurate contamination mapping. Kartotrak.one is a light version of Kartotrak. The software gathers Kartotrak exploratory data analysis and rapid mapping functionalities. Kartotrak, in its full version, enables more advanced geostatistical data modeling and uncertainty quantification ...
By Geovariances
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Fluoride contamination mapping of groundwater in Northern India integrated with geochemical indicators and GIS
There are many incidents of increasing fluoride concentrations observed in India's groundwater. In the present study, the fluoride content was chemically analysed and integrated with geochemical model WATEQ4F sampled from Allahabad district, Northern India, with other water quality parameters. Geospatial technique was employed to depict the spatial distribution of fluoride ...
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Geochemical studies to delineate topsoil contamination around an ash pond of a coal-based thermal power plant in India
In the present study, an attempt was made to delineate soil contamination around the ash pond of a coal-based thermal power plant. The topsoil in the study area was found to be contaminated to varying degrees from ash disposal. The soil drawn from various profiles was largely contaminated by ash fall out, predominantly in the prevalent wind direction. Pb, Zn, Cu, Ni, Co, Mn, Cr, V and Ba were ...
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Environmental surveys
This is a collection of various cases where the 2D resistivity imaging method pioneered by Advanced Geosciences Inc have been successfully applied. Click on a section below and you will be shown a full 2D resistivity imaging brochure detailing the case in question. Acknowledgement: These cases have been submitted by satisfied customers whom we thank for permission to publish ...
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ATES: a geo-informatics decision aid tool for the integration of groundwater into land planning
Groundwater is the primary source of drinking water for small municipalities and individuals. However, groundwater can be polluted by almost any land use. Consequently, many governments have acquired groundwater information in the aim of protecting the resource. Nevertheless, the resulting data are often ill-fitted to planning needs. In a previous study, a method was developed to help planners ...
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Industrial experience feedback of a geostatistical estimation of contaminated soil volumes
Geostatistics meets a growing interest for the remediation forecast of potentially contaminated sites (both chemical/radiological): pollution mapping, contaminated volumes estimation, integration of auxiliary information, setup of adaptive sampling strategies. This interest has been supported in France by the GeoSiPol association (Geostatistics for Polluted Sites) created in 2004 and which is ...
By Geovariances
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Automatic mapping in emergency: a geostatistical perspective
In the case of a severe nuclear accident, radionuclides may be released into the atmosphere and contaminate large areas. Radiological maps are obtained after converting local measurements into continuous information in space. Ideally, the mapping process should be fully automatic and provide information in real time. This paper is presenting the results obtained from two statistical exercises ...
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The value of utilising stochastic mapping of food distribution networks for understanding risks and tracing contaminant pathways
Difficulties in adequately characterising food supply chain topologies contribute major uncertainty to risk assessments of the food sector. The capability to trace contaminated foods forward (to consumers) and back (to providers) is needed for rapid recalls during food contamination events. The objective of this work is to develop an approach for risk mitigation that protects us from an attack on ...
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A Procedure to assess Contaminated Soil Ecotoxicity
Abstract :Two polluted soil samples were assessed for both acute (Microtox®,Daphnia magna,Thamnocephalus platyurus) and chronic (Pseudokirchneriella subcapitata) toxicity, as well as for genotoxicity (Mutatox®). Bioassays were performed on soil water leachates and on soil solvent extracts to characterize not only the water soluble pollutants but also to evaluate less soluble pollutants or ...
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Validation of two applied methods of groundwater vulnerability mapping: application to the coastal aquifer system of Southern Sfax (Tunisia)
The coastal aquifers system of Sfax Agareb Chaffar Mahres (Southern Sfax) located in the central east of Tunisia is well known for population growth and industrial development. These industrial and agricultural developments have led to the degradation of water quality. In this study, DRASTIC and GALDIT models were integrated with geographical information system (GIS) tools, in order to assess ...
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Developing a public information and engagement portal of urban waterways with real-time monitoring and modeling
Waterways can contribute to the beauty and livelihood of urban areas, but maintaining their hydro-ecosystem health is challenging because they are often recipients of contaminated water from stormwater runoff and other discharges. Public awareness of local waterways’ health and community impacts to these waterways is usually poor due to of lack of easily available information. To improve ...
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Characterization Of A Deep Radiological Contamination: Integration Of Geostatistical Processing And Historical Data
Summary Emerging in the early 80’s, decommissioning is more than ever a major issue since hundreds of sites and facilities worldwide will end their operations over the next decades. Decontamination and remediation projects are all the more sensitive since they could last several years and turn out to be highly costly if not well-prepared. The key lies in an adequate contamination knowledge ...
By Geovariances
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What’s the Temperature? Thermal Modeling and its Importance in Thermal Remediation
What is a model? A beautiful person who struts down a run way, a scaled down sculpture of the Empire State Building, or a series of equations that describe some phenomenon? Did you guess all of the above? Gold star! Models come in many different shapes and sizes. In the environmental consulting and remediation industry, the word “model” often refers to a numerical model. Numerical ...
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Spatial Analysis and Geographical Distribution of Heavy Metal Contamination in Urban House Water Reservoirs at Khamis Mushait City, Assir, Saudi Arabia
To determine the most common heavy metals in the different water reservoirs used for drinking water supply in houses located at Khamis Mushait city, Saudi Arabia (see Map1 and; (Fig.1-6, Table 1,2), Maps 2-10). To compare the results of the determined heavy metals with the standards set by Saudi Arabia Standards Organization and other international regulatory standards (Table 3). The ...
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DelAgua Kit Case Study - Duke University in Uganda
Duke University students Liz Kendall, Alayne Potter and Francis Oggeri used the DelAgua Kit during a two month long project in Migyera working with 'ChangeALife' Uganda. Migyera is a community where access to reliable clean water is a large concern. A 155 meter production well had recently been constructed, with a pump and 50,000L reserve tank soon to follow. Upon completion the water supply ...
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Field-scale cleanup of atrazine and cyanazine contaminated soil with a combined chemical-biological approach
A former agrichemical dealership in western Nebraska was suspected of having contaminated soil. Our objective was to characterize and remediate the contaminated site by a combined chemical-biological approach. This was accomplished by creating contour maps of the on-site contamination, placing the top 60 cm of contaminated soil in windrows and mixing with a mechanical high-speed mixer. ...
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Field-scale cleanup of atrazine and cyanazine contaminated soil with a combined chemical-biological approach
Received for publication August 12, 2008. A former agrichemical dealership in western Nebraska was suspected of having contaminated soil. Our objective was to characterize and remediate the contaminated site by a combined chemical-biological approach. This was accomplished by creating contour maps of the on-site contamination, placing the top 60 cm of contaminated soil in windrows and mixing with ...
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Evaluating Cleanup at Hamilton Army Airfield Using EQuIS and ArcGIS
The Sacramento District, US Army Corps of Engineers, is implementing EarthSoft's EQuIS and ArcGIS for better management, analysis, and response to landfill remedial activities being conducted at the former Hamilton Army Airfield. This former Air Force Base located four miles south of the city of Novato, on San Pablo Bay, in Marin County, California, is undergoing environmental clean-up as it is ...
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