soil cleanup Articles
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Regulatory considerations for the potential development and application of metal cleanup values
A workshop titled, “Ecological Soil Levels–Next Steps in the Development of Metal Clean‐up Values,” was held September 17–21, 2012, in Sundance, Utah. The purpose of the workshop was to provide managers and decision makers at contaminated sites in North America with appropriate methods for developing soil cleanup values that are protective of ecological resources. The workshop focused on ...
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Furthering the derivation of predictive wildlife toxicity reference values for use in soil cleanup decisions
The development of media‐specific ecological values for risk assessment includes the derivation of acceptable levels of exposure for terrestrial wildlife (e.g., birds, mammals, reptiles, and amphibians). Though the derivation and subsequent application of these values can be used for screening purposes, there is a need to identify toxicological effects thresholds specifically for making ...
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Cleanup criteria for radionuclides in US surface soil
The maximum concentrations of individual contaminants that will be allowed to remain in the environment after cleanup are developed on a case-by-case basis and may depend on site-specific risk analyses as well as stakeholder concerns. A database of cleanup criteria has been established from site-specific agreements at US Department of Energy (DOE) remediation sites and was used to analyse the ...
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Recommendations to improve wildlife exposure estimation for development of soil screening and cleanup values
An integral component in the development of media‐specific values for the ecological risk assessment of chemicals is the derivation of safe levels of exposure for wildlife. Though the derivation and subsequent application of these values can be used for screening purposes, there is a need to identify the threshold for effects when making remedial decisions during site‐specific assessments. ...
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Guest editorial: the IRIS assessment of inorganic arsenic: is science being hijacked?
The arsenic IRIS assessment exemplifies the current administration’s unwillingness to walk its own talk on transparency and scientific integrity. Early in her role as the EPA Administrator, Lisa P. Jackson expressed her now familiar mantra that regulatory initiatives must be “transparent” and risk assessments must be conducted to “ensure the highest levels of scientific ...
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Depth of the biologically active zone in upland habitats at the Hanford Site, Washington: Implications for remediation and ecological risk management
Soil invertebrates, mammals, and plants penetrate and exploit the surface soil layer (i.e., the biologically active zone) to varying depths. As the U.S. Department of Energy remediates radioactive and hazardous wastes in soil at the Hanford Site, a site‐specific definition of the biologically active zone is needed to identify the depth to which remedial actions should be taken to protect the ...
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Southern California Edison Santa Barbara I MGP in-situ ozone treatment groundwater progress monitoring
Southern California EdisonSanta Barbara - Former MGP siteIn-situ Ozone TreatmentPiper Case History #1-------------------------------------------------------Problem: Former MGP site containing VOC and PAH contamination needed aggressive soil and groundwater remediation.Project Solution: • Phase I - Limited Soil Excavation near Former Gasholder• Phase II – In-Situ Ozone Sparging for Deep Soils• ...
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Progress Soil Sampling Results Collected from Phase 1 at SRSNE Superfund Site in Southington, Connecticut
TerraTherm has recently completed its final progress soil sampling effort of Phase 1 at the Solvents Recovery Service of New England, Inc. (SRSNE) Superfund site in Southington, Connecticut. The site's total target treatment zone covers an area of approximately 74,195 square feet and an approximate volume of 47,298 cubic yards; with Phase 1 and Phase 2 each comprising approximately half the ...
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Wireless Real-Time Soil Data from Stevens Hydra Probe Soil Sensors Used In Contaminated Soil Cleanup Operation
Up until the early 1970s when The US Congress passed The Clean Water Act, industrial chemicals and petroleum products were routinely dumped onto the ground or poured down wells. In those days, few people understood groundwater hydrology, and disposing of chemical waste underground seemed like a safe and easy solution. Depending on the chemistry, underground pollution can linger for centuries, ...
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Biotechnology of hydrocarbon bioremediation in soil washing slurry
Application of Bioremediation for low cost contaminated soil washing slurry treatment with quick hydrocarbon reduction and improved sustainability. The application uses proprietary microbial formulation with a slurry bioreactor in order to accelerate the degradation process and to make it compatible with soil washing technology. The end result is a treated soil which meets the requirements for ...
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Brownfields redevelopment; Understanding your environmental responsibilities
Brownfields are properties that have, or may have, contamination or the stigma of contamination that hinders the reuse of land for new development. The lure to these properties is great – seemingly prime, large tracts of land being sold for relatively inexpensive prices; the vision of unrestricted development; putting residential communities on these lands and reaping a great return. To further ...
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Effectiveness of a Sediment Time Critical Removal Action – PCB Reduction in Fish Tissue, Surface Water and Sediment via Wet Excavation
Documenting successful remediation of polychlorinated biphenyl (PCB)‐contaminated sediments is limited; potentially due to inadequate monitoring methods, complexities associated with the environment, and selected remedial techniques. At some sites, absence of appropriate baseline and post‐removal monitoring limits proper evaluation of remedial efficacy. Accurate interpretation of interactions ...
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Next steps in the development of ecological soil clean‐up values for metals
This special series in IEAM presents the results from six workgroups that were formed at the workshop on Ecological Soil Levels—Next Steps in the Development of Metal Clean‐up Values. This introductory paper presents an overview of the issues assessors face when conducting risk assessments for metals in soils, key US EPA documents on metals risk assessment, and discusses the importance of ...
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Crude Oil in Soil
For many good reasons are there in the moment high focus on cleaning up soil do to varies contamination over the years from example oil production or wars. One of the major cleaning projects is on the way in Kuwait, caused by the oil well fires happened during the Iraq war I 1991. Photos from the U.S. Space Shuttles (nasa.gov), show oil wells set on fire along the Persian Gulf in June 1991. ...
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Deriving site‐specific clean‐up criteria to protect ecological receptors (plants and soil invertebrates) exposed to metal or metalloid soil contaminants via the direct contact exposure pathway
Soil contaminant concentration limits for the protection of terrestrial plants and soil invertebrates are commonly based on thresholds derived using data from laboratory ecotoxicity tests. A comprehensive assessment has been made for the derivation of Ecological Soil Screening Levels (Eco‐SSL) in the United States of America (USA); however, these limits are conservative because of their focus ...
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SEB Surfactant Enhanced Bioremediation Process Improves F3 & F4 Bioremediation to CCME Guidelines - Case Study
SEB Surfactant Enhanced Bioremediation process successfully cleans >4,000 Tons of F3 and F4 hydrocarbon contaminated soils at a remote site in Alberta. The SEB process was employed when the subject soils would not respond well to a conventional ex-situ bioremediation treatment. So after a 20 month period of unsuccessful bioremediation; the client and environmental contractor contacted Ivey ...
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What are Environmental Standards for Tennessee Underground Storage Tanks?
Tennessee’s Division of Underground Storage Tanks provides procedures to evaluate the soil and water clean up levels. It is committed to protecting human health and the environment by provided standards to prevent releases into the environment and clean-ups. The Tennessee UST Act is responsible for the standards and regulations on underground storage tanks. The Tennessee underground ...
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Soil baked to clean up contamination...
Can an old drill site be cleaned up without adding truckloads of contaminated soil to the landfill? Chevron Canada will be using a technology called thermal desorption to clean up a site located 13 kilometres southwest of Pincher Creek. Leif Sollid, spokesman for Chevron, who is the operator of the site, said they considered two options for the clean up. The soil is classified as a non-dangerous ...
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Deriving site‐specific soil clean‐up values for metals and metalloids: Rationale for including protection of soil microbial processes
Although it is widely recognized that microorganisms are essential for sustaining soil fertility, structure, nutrient cycling, groundwater purification and other soil functions, soil microbial toxicity data were excluded from the derivation of Ecological Soil Screening Levels (Eco‐SSL) in the United States. Among the reasons for such exclusion were claims that microbial toxicity tests were too ...
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HAZWOPER – Different, Not Less
When we think of a hazardous material event, we often think of firefighters and technicians rushing in with large plastic space-like suits to stop the leak and save the day. These first responders definitely play a large role in the mitigation of these emergency situations, but sometimes we tend to forget about the second – due responders who pick up the pieces and begin recovery. ...
By HazSim
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