soil cleaning Articles
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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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Bioremediation Of Highway Spills On Sites With Shallow Underground Utility Lines
Highway spills involving saddle tanks of trucks are fairly common and in such cases almost 104 gallons of diesel are released in the environment. Although excavation is a preferred method, bioremediation using AgroRemed is considered another option in many situations like this one in West Virginia where the underlying cables were likely to be damaged. At the end of bioremediation, the values of ...
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Effects of Oversize Particles on the Density of Clean Granular Soils
Fill material often contains particles too large to be tested in conventional testing equipment. In order to evaluate the compaction, strength, and deformation characteristics of soil containing such oversize particles, a modeling criterion is required which specifies how the soil minus the oversize particles (the soil matrix) should be tested. Questions such as whether or not to replace oversize ...
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A not-for-profit organization is changing the brownfield landscape in Toronto`s Don Valley
Looking out over the green meadow beyond the old Brick Works factory, it’s hard to imagine it as the foundry full of bricks it once was. This is a space in transition, a remediation in progress. There are no more bricks out here, but there are plenty inside the 16 buildings on the industrial pad. A prosperous brickyard from 1889 to 1989, the Don Valley Brick Works had become a raver’s haven of ...
By Actual Media
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CL#5 - In Situ BioLogix Application - Case Study
Site Information A site in southern Alberta was polluted by dry cleaning solvents. The solvent entered the soil below the dry cleaning building and percolated through the soil to a perched ground water zone and an underlying second ground water zone. The soil and sediments are interbedded alluvial and marine sediments with a high permeability. The site was close to a water course, and ...
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Unlock the Superior Power of Liquid Concentrates
Should I choose a liquid concentrate or a powdered detergent for critical cleaning applications? With so many choices out there it can be difficult to figure out which cleaner is the best choice for your critical cleaning applications. After considering factors such as the surface being cleaned, the soil, the wash method and the proper temperature, the next thing to think about is whether to ...
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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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Case Study: Basford Gasworks Remediation Project, Nottingham
The soils washing installation now owned and operated by HBR was formerly used by Kinatex Heijmans Joint Venture to process contaminated soil at the Basford Gasworks site. The project was the first major land based application of soils washing technology in the UK with in excess of 150,000 tonnes of soil successfully processed. Treatability Phase In the autumn of 1996, LHJV were contracted by ...
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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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Using Commercial Carpet Cleaner for Office Buildings
Office buildings, with their hundreds of square feet of carpeted area, pose special challenges for cleaning contractors. Cleaning businesses must clean carpets within office buildings in as little time as possible to avoid disrupting daily operations. In high traffic areas, where carpets are densely soiled, cleaning becomes even more difficult. Therefore, most contractors purchase a commercial ...
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Sharing Outcomes to Support Global Expansion of Sanitation Services
At SOIL we’re growing a sanitation service in urban Haiti that is setting a global example for how to affordably and sustainable provide safely managed sanitation in rapidly growing urban communities. And we’re extra excited that we’re not the only ones doing this. SOIL is a member of the Container-Based Sanitation Alliance (CBSA), a group formed in 2017 to help address the ...
By SOIL Haiti
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Geosynthetics in the Volgermeerpolder - case study
The Volgermeerpolder (NL), which was once a landfill site for heavily polluted household and industrial waste, has been cleaned up and turned into a nature reserve. This is the largest soil remediation operation in Dutch history. With the aid of TenCate Geotube, clean sludge was converted into a natural cap (a layer of clean soil) on top of the seal. TenCate GeoDetect is used to monitor the seal ...
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Are you using your Cleaner at the Right temperature?
Establishing a cleaning regimen is no easy feat. So many factors need to be considered: soils, substrates, cleaning method, choice of detergent, length of cleaning cycle, amount of cleaner needed and cleaning temperature. By carefully considering all of these factors, you are on your way to setting up a cleaning protocol that is both effective and economical. So, you’ve done your homework ...
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Effect of 10 different TiO2 and ZrO2 (nano)materials on the soil invertebrate Enchytraeus crypticus
Nearly 80% of all the nano‐powders produced worldwide are metal oxides, and among these materials titanium dioxide (TiO2) is one of the most produced. TiO2 toxicity is estimated low to soil organisms, but some studies have shown that TiO2 nanoparticles (NPs) can cause oxidative stress. Additionally, it is known that TiO2 is activated by UV radiation, which can promote photocatalytic generation ...
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Survey monitoring results on the reduction of micropollutants, bacteria, bacteriophages and TSS in retention soil filters
A main source of surface water pollution in Western Europe stems from combined sewer overflow. One of the few technologies available to reduce this pollution is the retention soil filter. In this research project, we evaluated the cleaning efficiency of retention soil filters measuring the concentration ratio of standard wastewater parameters and bacteria according to factors limiting ...
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The advantages of physico-chemical treatment
Physico-chemical soil treatment is an effective technique to clean contaminated soils, removing a wide range of both organic and inorganic contaminants. Contaminants adhere to the fine-fraction of the soil, such as organic matter and clay/silt. The principle of the method utilizes the difference in grain-size and density of the materials and separates the different fractions by means of ...
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Family Farmers: The Original Conservationists
The modern conservation movement has its roots in the Dust Bowl era of the 1930’s when harsh winds swept soil from parched Midwest fields and created towering clouds of dust that plagued the country. Hugh Hammond Bennett, the father of the modern soil conservation movement, dramatically threw open the curtains of the room in which he was delivering testimony on soil erosion before Congress ...
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Clean dirt, no doubt! (Eh?)…Canada’s Nelson Environmental Remediation treats its business with heat and home grown values…
Clean Dirt, No Doubt! Indeed. With a distinctive Northern Canadian accent and a complimentary penchant for hard work, these words resound in the minds of brothers Darryl and Warren Nelson, President and Vice- President respectively, of their contaminated soil-cleaning business, Nelson Environmental Remediation Ltd. (NER). Clean Dirt, No Doubt! is, after all, the Company’s tagline and guiding ...
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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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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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