groundwater contamination Articles
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Site 25 System Slows Down Contamination
The Air Force has installed dollar $2 million groundwater extraction and granular activated carbon system to slow down the spread of the solvent trichloroethene (TCE) groundwater contamination at Site ...
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Phase I Environmental Site Assessment, Houston, TX 77060
Phase I Environmental Site Assessment – The site was evaluated under Phase I ESA. RSB identified that there was a metal contamination on a offsite location and which could pose environmental threat to the subject property. A Phase II ESA was recommended. RSB performed the Phase II ESA, and discovered that groundwater on the subject property contaminated metals. There was no past operation ...
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Dressing down groundwater contamination
Unlike the late Paul Newman, who bottled his special-recipe salad dressing and sold it in supermarkets, Dr. Robert Borden simply mixes up his own 'dressing' and pumps it into the ground. That’s because the environmental engineering professor and his graduate students are more interested in feeding microbes to clean up contaminated groundwater than in making just another Ranch dressing. “It’s ...
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Assessing the potential risks of burial practices on groundwater quality in rural north-central Nigeria
Several cultures of north-central Nigeria do not use community cemeteries. Instead, human remains are buried in and around family compounds, often in shallow and sometimes unmarked graves. At several locations, graves and drinking water wells end up too close to be presumed environmentally safe. This paper reports findings of a pilot study that explored the potential for groundwater contamination ...
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Groundwater Remediation Methods
Groundwater contamination is a significant environmental challenge faced by many regions worldwide. Pollution resulting from hydrocarbons and other contaminants can have disastrous consequences on both the environment and human health. Therefore, the need for effective groundwater remediation methods cannot be overemphasized. In this article, we will discuss some of the groundwater remediation ...
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Evaluation of uncertainty parameters in risk assessment of agricultural chemicals on groundwater contamination
Risk assessment is meaningful to quantitatively define adverse effects on human health and natural environment and it is possible to choose the most effective action related to groundwater contamination. In this paper, parameter uncertainties in risk assessment in geo-environmental system are examined through a probabilistic application of deterministic contaminant transport model using Latin ...
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Impact of cemeteries on groundwater contamination by bacteria and viruses – a review
In the process of decomposition of a human body, 0.4–0.6 litres of leachate is produced per 1 kg of body weight. The leachate contains pathogenic bacteria and viruses that may contaminate the groundwater and cause disease when it is used for drinking. So far, this topic has been investigated in several regions of the world (mainly Brazil, Australia, the Republic of South Africa, ...
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Benefits to groundwater quality by diverting construction and demolition wastes from landfills
The objective of this report is to evaluate the effects to groundwater by diversion of solid wastes from landfills. The focus is directed to the diversion of solid wastes from construction and demolition landfills associated with deconstruction and demolition projects. The environmental benefits of this diversion are discussed including groundwater contamination issues. Additionally, diversion ...
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Identification of groundwater contamination zone around a reclaimed landfill using carbon isotopes
Chemical and isotopic analyses of groundwater from piezometers localized around a reclaimed landfill were performed in order to identify the boundaries of groundwater contamination zone. Spatial distribution of dissolved inorganic carbon (DIC) concentration and stable carbon isotopes in the groundwater was used to distinguish the piezometers localized within the contaminated aquifer. Background ...
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Low-Flow Purging and Sampling Ground Water - Evolution of Technology and Standards
The human suffering caused by groundwater contamination has been dramatized in films such as “Erin Brockovich” and “A Civil Action.” Joe Ritchey describes the ASTM standards behind the scenes that help ensure safe drinking water and provide proof of contamination when ...
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Cleveland hopkins int`l airport de-icing drainage layer, Cleveland, OH - Case Study
The Presto Geosystems Geoweb® Load Support System was utilized for a 1.3 million sq ft. de-icing area at the Cleveland Hopkins Airport. The system serves as a construction support platform over marginal subgrades and a highly-permeable structural drainage layer for the 30-acre de-icing site. Confinement in the interconnected cells stabilizes aggregate so it can handle the heavy loads of ...
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Barstow, California - Case Study
From Contaminated Groundwater to Potable Water Due to the presence of serious contaminants and potentially hazardous material in groundwater, there is an increasing threat to human health. Regions like the West and the Midwest with high concentrations of livestocks has already suffered from groundwater contamination. Facilities that use groundwater as tap water recognized the potential dangers ...
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Pollution level detection in dump clay liners by hyperspectral imaging
Landfill is the most common and cost–effective method of waste disposal, with collection and transportation accounting for 75% of the total cost. A key point in waste disposal is the picking up and the drainage of percolation fluids to limit the risk of groundwater contamination. Aim of this study was to evaluate the possibility to develop fast and reliable methods to perform an in situ ...
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Spatio-temporal variation of groundwater contamination using IEA-UEF in urban areas of Jilin City, North-eastern China
Groundwater monitoring wells located in urban areas of Jilin City were sampled from 1980 to 2009 for eight groundwater quality parameters: pH, SO42−, Cl−, NO3−-N, NO2− -N, NH4+-N, F−, and total hardness (TH). The data were analysed by a universal exponential formula based on an immune evolutionary algorithm, and later mapped with the Kriging interpolation method. The primary objectives were ...
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Remediation technology of groundwater contaminated by perchloroethylene
To dechlorinate perchloroethylene (PCE), batch experiments were conducted for five groups of reactors: zero-valent iron (Fe0), zero-valent zinc (Zn0), an anaerobic microbial community (MB), a combination of iron powder and an anaerobic microbial community (FeMB), and combination of zinc powder and an anaerobic microbial community (ZnMB). After about 25 days, PCE in the FeMB degradation system has ...
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Pyrophyllite clay for bacteriophage MS2 removal in the presence of fluoride
The aim of this study was to investigate the removal of the bacteriophage MS2 from aqueous solution using pyrophyllite. Batch experiments were conducted to examine MS2 sorption to pyrophyllite. The influence of fluoride, a groundwater contaminant, on the removal of MS2 was also observed. Column experiments were performed with pyrophyllite to examine MS2 removal in the absence and presence of ...
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BOS-100 Pilot Study at Former Mitchell`s Formal Wear, Charlotte, NC
In this pilot study, BOS 100® was used at a former uniform and formal-wear rental service site that engaged in dry cleaning activities from 1979 to 2002. When soil and groundwater contamination was discovered in 1998, AST spills used for virgin PCE were associated with the contamination. A pilot study using BOS 100® reduced PCE contamination by over 99% immediately following injection ...
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Application of first-order reliability method to modelling the fate and transport of benzene in groundwater
Parameter uncertainty plays a significant role in decision making regarding groundwater contamination and remediation, especially for non-conservative chemicals. This paper presents a probabilistic screening model to accommodate parameter uncertainty in the aquifer media, and physical–chemical parameters, using the first-order reliability method (FORM). The application of the developed model is ...
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Environmental Data Management for Groundwater Contamination
ESdat environmental data management software has been used to manage and report on large datasets generated from an investigation of groundwater contamination on an industrial facility in Adelaide. ESdat was used in managing site data and the maintenance of conceptual model and time series outputs at a complex site over an extended period. Leakages of TCE and the subsequent groundwater ...
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Potential Groundwater Contamination with Toxic Metals in and Around an Abandoned Zn Mine, Korea
This study evaluated potential groundwater contamination with toxic metals in and around an abandoned zinc mine in Korea. Water levels in the mine waste dump indicated occurrence of a losing stream during the period of peak stream flow as a result of snowmelt runoff, which posed the threat of groundwater pollution. The pH values for the groundwaters were near neutral to slightly basic, with a ...
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