Groundwater Remediation Articles
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The Influence of an Integrated Remedial System on Groundwater Hydrology
ABSTRACT This paper summarizes the development of a remedial system designed to hydraulically contain and ultimately reduce a plume consisting of primarily 1,1,2,2-tetrachloroethane (1,1,2,2-TeCA). The system consists of groundwater circulating wells or extraction wells located in the core of the 1,1,2,2-TeCA plume to provide active source control, combined with monitored natural attenuation ...
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New Jersey Uses GIS, EQuIS to Collect Site Remediation Data
Using GIS To Manage Remediation Data GIS holds great potential as a tool for managing environmental site remediation data. While using GIS to locate Superfund sites is commonplace, GIS has played only a minor role in the review and analysis of chemical data gathered during an investigation or monitoring activity. There are a number of reasons why GIS has not become commonplace in the evaluation ...
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State-wide collection of site remediation data in support of environmental quality objectives
Geographic Information Systems (GIS) hold great potential as a tool for managing environmental site remediation data. While noting the location of contaminated sites in GIS is commonplace, GIS has played only a minor role in review and analysis of chemical data gathered during an investigation or monitoring activity. The New Jersey Department of Environmental Protection Site Remediation Branch ...
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Pollution retention capabilities of roadside soils
ABSTRACTRunoff from highways contains significant loads of heavy metals and hydrocarbons. According to German regulations, it should be infiltrated over embankments to support groundwater-recharge. To investigate the decontaminating effect of greened embankments, soil-monoliths from highways with high traffic densities were taken. Soils were analyzed to characterize the contamination in relation ...
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The Alternative to Pump and Treat
Sometimes, an important technological advance begins with a small step – back! Such is the case with remediation of hydrocarbons from groundwater utilizing existing recovery and monitoring wells. For the past few years, state government has based decisions on the amount of clean up that they require by the risk posed to the environment. Risk Based Corrective Action, commonly called 'Rebecca' ...
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The Availability of EIL Insurance During the 80’s and Early 90’s
Introduction In Owens-Illinois, Inc. v. United Ins. Co., the New Jersey Supreme Court held that, in allocating insurance coverage for indivisible losses that trigger multiple coverage periods, the policyholder must share pro rata responsibility1 for self-insured, under-insured, and uninsured periods. When the policyholder has decided to forego insurance, as opposed to periods in which insurance ...
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Common Treatment Technologies for Fuels in Ground Water, Surface Water, and Leachate
It may be necessary to know other subsurface information to remediate fuels in ground water. Treatability testing to characterize contaminant biodegradability and nutrient content may be needed for any biodegradation technology. A subsurface geologic characterization would be particularly important to characterize the migration of NAPLs. Recovery tests are usually necessary to design a ...
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In Situ Biological Treatment for Ground Water, Surface Water, and Leachate
The main advantage of in situ treatment is that it allows ground water to be treated without being brought to the surface, resulting in significant cost savings. In situ treatment, however, generally requires longer time periods, and there is less certainty about the uniformity of treatment because of the variability in aquifer characteristics and because the efficacy of the process is more ...
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Common Treatment Train for Inorganics
A treatment train is the combination of different treatment technologies. A system diagram of a common treatment train for inorganics is illustrated below. Metal contaminated soil is treated using the combination of electrokinetics and phytoremediation. Electrokinetics is used to remove metals from deep soil and ground water. A low density direct current is applied to mobilize charged species, ...
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Soil Fracturing
Introduction Fracturing is an enhancement technology designed to increase the efficiency of other in situ technologies in difficult soil conditions. The fracturing extends and enlarges existing fissures and introduces new fractures, primarily in the horizontal direction. When fracturing has been completed, the formation is then subjected to vapor extraction, either by applying a vacuum to all ...
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Data Requirements for Ground Water, Surface Water, and Leachate
It is common for ground water to be contaminated with the water soluble substances found in overlying soils. Many of the required data elements are similar, e.g., pH, TOC, BOD, COD, oil and grease, contaminant identification and quantification, and soil and aquifer characterization. Additional water quality monitoring data elements include hardness, ammonia, total dissolved solids, and metals ...
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Enhanced Bioremediation
Introduction Enhanced bioremediation is a process in which indigenous or inoculated micro-organisms (e.g., fungi, bacteria, and other microbes) degrade (metabolize) organic contaminants found in soil and/or ground water, converting them to innocuous end products. Nutrients, oxygen, or other amendments may be used to enhance bioremediation and contaminant desorption from subsurface materials. ...
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Common Treatment Technologies for Inorganics in Ground Water, Surface Water, and Leachate
It may be necessary to know other subsurface information to remediate inorganics in ground water, surface water, and leachate. Treatability studies are usually necessary to ensure that the contaminated ground water can be treated effectively at the design flow. A subsurface geologic characterization would be particularly important to characterize the effects of adsorption and other processes of ...
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Decontaminating Groundwater Sampling Devices
These studies are the second part of a two year project that examines decontaminating groundwater sampling devices. In the first year, the efficiency of various decontamination protocols was tested using small test pieces of materials that are commonly used in groundwater sampling devices. Those tests showed that a hot detergent wash and rinse followed by hot air drying (105°C) was the most ...
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Engineering Properties of Tire/Soil Mixtures as a Lightweight Fill Material
The United States Environmental Protection Agency (USEPA) estimates that over 279 million discarded tires are being added annually to the already existing stockpile of two billion tires. Current disposal and stacking methods of waste tires are not acceptable due to the possibility of fire and health hazards. Several states and the federal government have issued legislation that encourages or ...
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Pump-and-Treat Ground-Water Remediation - A Guide for Decision Makers and Practitioners
Pump-and-treat is one of the most widely used ground-water remediation technologies. Conventional pump-and-treat methods involve pumping contaminated water to the surface for treatment. This guide, however, uses the term pump and treat in a broad sense to include any system where withdrawal from or injection into ground water is part of a remediation strategy. Variations and enhancements of ...
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Low-Flow (Minimal Drawdown) Ground Water Sampling Procedures
The Regional Superfund Ground Water Forum is a group of ground-water scientists, representing EPA’s Regional Superfund Offices, organized to exchange information related to ground-water remediation at Superfund sites. One of the major concerns of the Forum is the sampling of ground water to support site assessment and remedial performance monitoring objectives. This paper is intended to provide ...
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Skimming Oily Wastewater
As large generators of oily wastewater tighten effluent controls, the U.S. Environmental Protection Agency (EPA) is targeting smaller generators. Some of the firms receiving their attention are smaller manufacturing plants, automotive garages, mobile equipment service shops and truck farms. Many of these firms do not have access to a sanitary sewer system that will accept oily wastewater. Because ...
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A Citizen`s Guide to Bioremediation
What is bioremediation? Bioremediation is a treatment process that uses naturally occurring microorganisms (yeast, fungi, or bacteria) to break down, or degrade, hazardous substances into less toxic or nontoxic substances. Microorganisms, just like humans, eat and digest organic substances for nutrients and energy. In chemical terms, 'organic' compounds are those that contain carbon and hydrogen ...
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Low-Flow (Minimal Drawdown) Ground-Water Sampling Procedures
Untitled Document Background The Regional Superfund Ground Water Forum is a group of ground-water scientists, representing EPA's Regional Superfund Offices, organized to exchange information related to ground-water remediation at Superfund sites. One of the major concerns of the Forum is the sampling of ground water to support site assessment and remedial performance ...
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