permeability

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permeability

The measure of a material's ability to transmit liquids.The passage of soil contaminants into groundwater increases as soil permeability increases.On the other hand,in situ remediation—removal or decomposition—of groundwater contamination is easier as permeability increases.For a color map of the United States showing the relative permeability of soils across the country, see the Web site page of the Environmental Protection Agency at www.epa.gov/iwi/1999sept/iv20_usmap.html.

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The new smart coating is impermeable to water and therefore the hazardous salt particles have been neutralized because water will not travel through the coating.
In sparsely populated locales, highways account for the largest proportion of impermeable surfaces, she notes.
But until more information is available, he noted he would drop his support for third-party payer reimbursement for impermeable covers.
In summary, the results of this study in low-income, urban homes indicate that a) both intensive vacuuming alone and dry steam cleaning plus vacuuming can result in significant reductions in HDM allergens in bedroom carpet, with the combined modality producing a longer duration effect; b) impermeable covers combined with frequent washing of nonencased bedding materials can significantly reduce HDM allergen levels in the bed; and c) both intensive vacuuming and steam cleaning have a modest effect on HDM levels in upholstered furniture.
An impermeable mulch film could improve the effectiveness of these gases by keeping them in contact with the soil longer.
However, inside the scope of service, the provider will be required to undertake manhole and ancillary surveys, incorporating pumping station surveys, combined sewer overflow surveys and impermeable area surveys, as well as CCTV surveys.
It's very simple to make sunglasses impermeable to UV light," Young says.
Comfort Foam from Foam Enterprises is sprayed insulation that forms dosed cells, which means it becomes a nearly impermeable barrier.
Test results reveal: 1) maximum water table height and pore-water pressure occur when the sand column is approximately twice the initial water table height, 2) pore-water pressure remains high long after the shaking ceases, apparently due to the elevated water table, 3) with an impermeable layer the pore-water pressure continues to rise as the sand height increases, 4) with an impermeable layer pore-water pressure remains high long after the shaking ceases, apparently due to the lithostatic pressure of the sand column above the impermeable layer, 5 ) sand compaction occurs beneath the water table, and 6) the amount of sand compaction is controlled by initial water table height.
Above 2912F, the mold-metal interface fuses into an impermeable glassy surface.
To avoid infiltration of methane gas into the inmate housing units, a protective impermeable plastic film membrane was placed underneath the floor slab of each building.
Additionally, the use of impermeable films, such as the commercially available Marvel Seal, can be custom cut and heat-sealed to make almost completely impermeable containers.