4 edition of Demonstration of remedial action technologies for contaminated land and groundwater found in the catalog.
Demonstration of remedial action technologies for contaminated land and groundwater
|Series||NATO/CCMS -- no. 190, NATO/CCMS (Series) -- no. 190|
|Contributions||United States. Environmental Protection Agency, North Atlantic Treaty Organization. Committee on the Challenges of Modern Society|
|The Physical Object|
|Pagination||2 v. in 3|
New Guidance Documents Three guidance documents were released recently by ITRC work groups to assist regulators, environmental consultants, and other stakeholders in addressing issues surrounding specific remediation technologies: Phytotechnology Technical and Regulatory Guidance Document PHYTO-2 describes various aspects of phytotechnology applications, including regulatory considerations, current research, case studies, and work plan components. Bioremediation is either done on the contaminated site in situ or after the removal of contaminated soils at another more controlled site ex situ. Typically, hydrocarbon concentrations in soils can be reduced to one fiftieth their original concentration with little physical disruption to the site. At present most vertical barriers are prescribed with a secondary layer of impermeable material to back up the primary protective barrier, typically bentonite clay. Implementation of the remediation plans began with encapsulating the contaminated area in sheet piles and constructing an asphalt cover to reduce leachate flux to the atmosphere. Capping is common practice on closed landfill sites and other contaminated sites where the main environmental concern is the ingress of water rather than the direct emission of undesirable substances.
Catalytic oxidation which uses a catalyst on a support to facilitate a lower temperature oxidation. Below is a brief summary of each technology. The nanomaterials then degrade organic contaminants through redox reactions or adsorb to and immobilize metals such as lead or arsenic. This is a preview of subscription content, log in to check access. Numerous presentations and publications reported about the pilot study activities over the five year period. Then there is the noise, dust and traffic of developments.
The high-pressure steam front advances from the central injection well through the ground Figure 1. Per- and polyfluoroalkyl substances PFAS is a recently added contaminant focus area. Furthermore, regulators, financial institutions, insurers and site purchasers will also need assurances that the level of clean-up taking place is defensibly measurable, so an independent monitoring regime should also be proposed and approved. Once the suitable technique is agreed between the parties involved, detailed methodologies are set out and the appropriate funding, project management and sub-contract parties are identified and selected.
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Marc Tuchman U. Therefore this technique has been especially useful in the remediation of petroleum-based contamination and for other compounds which are volatile such as toluene. Google Scholar 2. Then there is the impact on local traffic, schools, playing fields, and other public facilities of the often vastly increased local population.
The pilot study has established two international focus areas for risk management and contaminated land. Depending upon site- and building-specific circumstances, vapors of potentially toxic chemicals may accumulate to a point where the health of the occupants e.
This project would involve an in situ electrochemical technology that requires minimal equipment and processing, compared with alternative technologies.
The characterization and remediation of contaminated sediment, which is found in all 42 areas of concern recognized by the IJC, continues to present particular challenges. Bioremediation is either done on the contaminated site in situ or after the removal of contaminated soils at another more controlled site ex situ.
James U. Kovalick, Jr. The following section provides guidance and technical information on monitored natural attenuation. For more information, contact the U. The phytoextraction experiment took place on a one-hectare target area, beginning in the Spring of Sanning, D.
The technical information provided in this report may be useful for regulators, responsible parties, and others assessing and managing Demonstration of remedial action technologies for contaminated land and groundwater book intrusion investigation programs.
Individual countries can bring experts to report on projects that they are conducting. Together, these two policy documents provide guidance on the consideration of MNA for a broad range of contaminants at Superfund sites. Ex-situ methods involve excavation of affected soils and subsequent treatment at the surface as well as extraction of contaminated groundwater and treatment at the surface.
Also public and operator health and safety issues need to be addressed, and will have formed part of the approval by the relevant regulator. Controlled, high temperature incineration with filtering of exhaust gases however should not pose any risks.
Remedial design for the entire site was completed in Often nearby sites owned by the same company or which are nearby and have been reclaimed, levelled or filled are also contaminated even where the current land use seems innocuous. This diverse group promoted an excellent atmosphere for technology exchange.
Bioremediation Bioremediation is a technique for degrading certain contaminants by the enhanced action of micro-organisms. With the development of several commercially available AC-based products, this remedial technology has been applied with increasing frequency at contaminated sites across the country.
As such, they dissolve slowly, supplying potentially significant concentrations of contaminants to groundwater over very long time periods. These barriers can also be used to prevent the lateral migration of liquids and dissolved contaminants, and are usually manufactured from geosynthetic materials which are water or gas impermeable and resistant to tearing and puncture.
As a result of past waste practices at such plants, explosive residues may leach through the soil and contaminate groundwater. James, U. These issues are grouped under three topic areas: Issues related to monitoring wells Section 2 ; Representativeness of monitoring wells Section 3 ; Post-sampling artifacts Section 4 April15 pages.
The Phase III study would be technologically orientated and would continue to address technologies. Visit Ecological Revitalization Green Remediation EPA's green remediation website explains the basic principles and objectives of green remediation, and outlines best practices for reducing the environmental footprint of contaminated site cleanup projects.
Compliance must be cheaper than to have continuous breaches. These barriers only function fully where impermeable horizontal strata exist below the site, into which the artificial barrier can be keyed tocontain the contaminant.Because pump-and-treat is a major remedial action technique, methods are being tested to enhance its effectiveness.
One way to improve the effectiveness of pump-and-treat is to contain or remove the contaminant source zone, that is, the area in which contaminants were disposed or tjarrodbonta.com the source zone remains untreated or uncontrolled, it will serve as a continual source of contaminant.
The contaminated area was determined to be 37 meters by 37 meters ( ft by ft) to a depth of 15 meters (50 ft) below the land surface.
The highest soil gas hydrocarbon concentrations had dropped from 1 79 percent of the lower explosion limit (LEL) in Februaryto 88 percent LEL in April It is requested of the Committee on the Challenges of Modern Society that they approve the establishment of the Phase III Continuation of the Pilot Study on the Demonstration of Remedial Action Technologies for Contaminated Land and Groundwater.UK demonstration and emerging pdf including those in the NATO/CCMS (Committee for Challenges to Modern Society) Pilot Study on Research, Development and Evaluation of Remedial Action Technologies for Contaminated Soil and Groundwater; and (iii) Contaminated land treatment technology research and development in the tjarrodbonta.com by: 6.The case studies in this volume describe 14 applications of soil vapor extraction (SVE) and in situ thermal processes.
These include 10 full-scale and one pilot-scale SVE applications used to treat soil contaminated with chlorinated solvents and petroleum hydrocarbons.tjarrodbonta.com Technical Report: Evaluation of the proposed pilot groundwater ebook and treat demonstration for the Paducah Gaseous Diffusion Plant.
Environmental Restoration Program. Evaluation of the proposed pilot groundwater pump and treat demonstration for the Paducah Gaseous Diffusion Plant. Environmental Restoration Program.