groundwater rule Articles

  • Can disclosure rules clarify what’s in our groundwater? Enhesa’s US consultant Rachel Degenhardt on hydraulic fracturing & groundwater contamination in ELQ

    This month, Enhesa US Regulatory Consultant, Rachel Degenhardt, was published on the issue of hydraulic fracturing and groundwater contamination in Berkeley’s Ecology Law Currents, an online publication of Ecology Law Quarterly, one of the nation’s most respected and widely read environmental law journals. “The U.S. EPA is working to increase transparency regarding the ...

  • The importance of groundwater monitoring

    Groundwater monitoring is an essential element in any environmental information system. Based upon validated groundwater monitoring data, information is derived on which decisions can be made. Constant monitoring provides the necessary data input for your smart environment and is basically the basis of the decision making process concerning spatial planning and climate change adaptation. As in ...


    By Eijkelkamp Soil & Water

  • In Search of Ideal Groundwater Treatment

    As surface water supplies become increasingly polluted and difficult to treat, the use of groundwater continues to increase. Every day, more than 77 billion gal of water are withdrawn from aquifers for a variety of uses including human consumption. Worldwide, groundwater makes up 95% of available freshwater, and nearly half of the U.S. population receives all or part of its drinking water from ...

  • Who Owns Groundwater?

    California’s drought underscores the need to improve how the state - and the rest of us - divvy up a resource in demand. Grapevines march across wires strung along rolling hills, their little trunks improbably supporting heavy black fruit. Cindy Steinbeck’s family has been farming this land since 1920. They grow Zinfandel, Viognier, Cabernet, Merlot, and Petite Syrah grapes but are ...


    By Ensia

  • Groundwater: Low-flow Purging and Sampling

    Significant timesavings, improved sample process integrity, quality assurance and minimal quantities of potentially contaminated purge water to manage - are attractive as the focus on groundwater quality sharpens and economics demand best cost-benefit based methods Water has become a vitally important resource.  Maintaining its quality and quantity and avoiding pollution are set to be ...

  • Improved light-transmission method for the study of LNAPL migration and distribution rule

    In this study, diesel was selected as a pollutant to study the migration and distribution rule of light non-aqueous phase liquid (LNAPL) in the simulated vadose zone. Saturation was regarded as a critical parameter to reflect the LNAPL migration and distribution rule. To get LNAPL saturation distribution figures, an image processing method of saturation was established to improve ...


    By IWA Publishing

  • EPA Considering Rule to Require Reporting Of Chemicals Used in Hydraulic Fracturing

    The Environmental Protection Agency is considering a rulemaking that might require chemical manufacturers and processors, as well as oil and gas exploration companies, to report on chemicals used in hydraulic fracturing. In an advance notice of proposed rulemaking, the EPA said it is seeking information from industries, state agencies and others on the range of data the agency should ...


    By Bloomberg BNA

  • Unauthorized groundwater use: institutional, social and ethical considerations

    In many areas of the world, particularly in arid regions or in areas experiencing population growth, there is increased competition over scarce water resources. This is likely to increase in the future due to continued population growth, urban expansion and the challenge of the impact of climate change on water resource availability. In this context, groundwater is likely to play a pivotal role ...


    By IWA Publishing

  • A coupled simulation and fuzzy-rule-based method for assessing health risks at a petroleum-contaminated site

    Risk assessment of contaminated sites is crucial for evaluating adverse health impacts on local communities, and provides effective decision support for site-remediation practices. In this study, a coupled simulation and fuzzy-rule-based method was proposed for health risk assessment of groundwater contamination, and applied to a petroleum contaminated site. Benzene concentrations under two ...


    By Inderscience Publishers

  • Impact of climate variability on the salinization of the coastal wetland-aquifer system of the Po Delta, Italy

    Deltaic coastal areas are constituted by a patchwork of brackish lagoons and freshwater bodies; these coastal wetland-aquifer systems are fragile ecosystems that usually respond quickly to climate changes. To understand the hydrological processes occurring within the lagoons and the groundwater system of the Po River Delta (Italy), the contribution of both evaporation and anthropogenic factors ...


    By IWA Publishing

  • A transboundary aquifer of potential concern in Southern Africa

    Tuli Karoo transboundary aquifer (TBA) is shared between Botswana, South Africa and Zimbabwe in the Southern African Development Community (SADC) region. The TBA provides groundwater resources for various economic activities. Irrespective of the value offered by this TBA, there is very little research that has been conducted to improve understanding of the physical system and potential ...


    By IWA Publishing

  • Landfill gas explosive for global warming

    In response to EPA’s 1991 landfill rules that pushed the industry to larger facilities, landfill operator’s today pile and compact trash on the ground into giant mounds in the shape of a four sided pyramid. As originally contemplated, these mounds of trash were encased in liners to keep the wastes dry so contaminants would not be mobilized to leak into groundwater, along with ...


  • Case study – benzene contamination pilot study - retail gasoline site, Northglenn, Colorado

    Introduction LTE was contracted by Shell Oil Products US (Shell) to conduct a pilot test program at a petroleum hydrocarbon impacted retail facility north of Denver, Colorado. The goals of the pilot program were to: 1) Determine the viability of using a carbon-based injectate (RPI’s BOS 200®) to remove hydrocarbons from soil and groundwater, 2) Assess transient hydraulic conditions ...

  • Case study – benzene contamination - tank battery, Weld County, Colorado

    Introduction LTE was requested by Devon Energy Corporation (Devon) to remediate residual soil and groundwater impacts at an exploration and production site in Weld County, Colorado. Soil impacts were found from the surface to 24 feet below ground surface (bgs) and were a result of produced water sump and aboveground storage tank overfills. Benzene concentrations in the groundwater were up to ...

  • Implementability of Risk-Based Corrective Action (RBCA) in Wisconsin

    ABSTRACT Remediation of soil and groundwater contamination caused by leaking underground storage tanks (LUSTs) in the state of Wisconsin is regulated by the Wisconsin Department of Natural Resources (DNR), in accordance with rules specified in Chapters NR 140 and NR 700-726 of the Wisconsin Administrative Code. By the end of 1995, nearly 12,500 LUST sites had been identified in Wisconsin of which ...


  • A distributed hydrological model in the Heihe River basin and its potential for estimating the required irrigation water

    A Grid-based Integrated Surface–Groundwater Model (GISMOD) was developed to estimate the required irrigation water using a control-site method. The entire catchment is divided into multiple grid cells of equal size, and several grid cells can be chosen as the control sites by users in this model. The grid cells from the upper stream of each control site, which have a land-use type of farmland, ...


    By IWA Publishing

  • No Negative Impacts to Underground Infrastructure and Communication Lines using RegenOx at Site with High Concentrations of TRPH

    Kennedy Space Center, FL The Launch Equipment Shop (LES) at Kennedy Space Center, part of NASA's famed Vehicle Assembly Budding complex, has conducted highly specialized manufacturing fabrication, and assembly work for the space program since the early 1960s. Leaks from an underground storage tank (UST) led to notable fuel oil contamination of soil and groundwater, including a layer of ...


    By REGENESIS

  • New contaminated soil legislation in Spain

    MediTerra Consultors Ambientals, S.L. is an independent company which activity is oriented to the investigation and remediation of contaminated soils and groundwater and the performance of Environmental Audits and Due Diligences. From our experience, soil is one of the most sensitive and vulnerable contamination receptors in Spain and the growing number of contaminated sites is jeopardizing both ...

  • Solutions-IES Completes First Risk-Based Remediation Under New State Law

    A former electronics manufacturing facility in North Carolina (NC) had conducted groundwater remediation since 1991 to remediate low-level chlorinated solvents.  Under RCRA, the originally approved Remedial Action Plan (RAP) recommended pump and treat (P & T with air stripping and carbon) to capture and remove the contaminants.  Upon coming on board the project, Solutions-IES ...


    By Solutions-IES

  • Vapor-Phase Biofilters Show Promise for Treating High VOC Emissions

    Evaluating the Feasibility of Natural AttenuationUsing natural attenuation to remediate organic compounds in groundwater has gained popularity. In some cases, this process can reduce contaminant levels to below risk-based corrective action criteria or regulatory standards without implementing additional remedial action alternatives. However, it is often difficult to prove that natural ...


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