Research Reporting Series: Environmental protection technology, Volume 2Office of Research and Development, U.S. Environmental Protection Agency, 1990 |
Autres éditions - Tout afficher
Research Reporting Series: Environmental protection technology, Volume 2 Affichage du livre entier - 1972 |
Research Reporting Series: Environmental protection technology, Numéro 600 Affichage du livre entier - 1979 |
Research Reporting Series: Environmental protection technology, Volume 2 Affichage du livre entier - 1973 |
Expressions et termes fréquents
above-ground activated carbon air conductivity air stripping Amount Released aquifer aquitard assessment asterisk are typically benzene biodegradation biorestoration BTEX bulk liquid bulk product carbon adsorption compounds concentrations containment system contaminant plume contaminant vapors CONTAMINANT-RELATED contaminated groundwater Content of GW CSFs denoted denser than water depth to groundwater dissolved contaminants dissolved phase dissolved plume dissolved product effective estimate Ethylbenzene factors Figure floating NAPL free product gasoline Ground Surface groundwater flow High Medium Low hydraulic conductivity hydrocarbons implemented increases liquid density m-Xylene manual method migration Mobility monitoring NAPL plume NAPL recovery parameters permeable petroleum products porosity presented pumping rate ratio reaches the water receptors RELEASE-RELATED remediation goals removing contaminants saturated zone SITE-RELATED soil formation soil particles sorbed contaminant sorbed phases Sorption stratigraphy subsurface surface area surface water technologies toluene trench excavation typically more important unsaturated vacuum extraction vapor pressure viscosity volatilization Water Solubility mg/L water table Worksheet for Evaluating
Fréquemment cités
Page iii - These laws direct the EPA to perform research to define our environmental problems, measure the impacts, and search for solutions. The Risk Reduction Engineering Laboratory is responsible for planning, implementing, and managing research, development, and demonstration programs to provide an authoritative, defensible engineering basis in support of the policies, programs, and regulations of the EPA with respect to drinking water, wastewater, pesticides, toxic substances, solid and hazardous wastes,...
Page iii - Agency is charged by Congress with protecting the Nation's land, air, and water resources. Under a mandate of national environmental laws, the Agency strives to formulate and implement actions leading to a compatible balance between human activities and the ability of natural systems to support and nurture life. To meet this mandate, EPA's research program is providing data and technical...
Page ii - US Environmental Protection Agency, and approved for publication. Mention of trade names or commercial products does not constitute endorsement or recommendation for use. FOREWORD Protection of the environment requires effective regulatory actions which are based on sound technical and scientific information.
Page iii - ... research, development, and demonstration programs to provide an authoritative, defensible engineering basis in support of the policies, programs, and regulations of the EPA with respect to drinking water, wastewater, pesticides, toxic substances, solid and hazardous wastes, and Superfund-related activities. This publication is one of the products of that research and provides a vital communication link between the researcher and the user community.
Page iii - FOREWORD Today's rapidly developing and changing technologies and industrial products and practices frequently carry with them the increased generation of materials that, if improperly dealt with, can threaten both public health and the environment. The US Environmental Protection Agency (EPA) is charged by Congress with protecting the nation's land, air, and water resources. Under a mandate of national environmental laws, the agency strives to formulate and implement actions leading to a compatible...
Page ii - Agency's peer and administrative reviews and has been approved for publication as an EPA document. Mention of trade names or commercial products does not constitute an endorsement or recommendation for use.
Page 45 - In the subsurface, rocks serve either as confining units or as aquifers. A confining unit or aquitard is characterized by low permeability that does not readily permit water to pass through it despite the fact that it stores large quantities of water. Examples include shale, clay, and silt. An aquifer has sufficient permeability to permit water to flow through it with relative ease and, therefore, it will provide a usable quantity to a well or spring. Water occurs in aquifers under two different...
Page 25 - NOTE: Blanks indicate the unavailability of data and do not indicate the absence of a particular compound from the hydrocarbon product. SOURCES: Column 1: Hoag et al, 1984; EPA, 1984; Ghassemi et al.
Page 70 - Course materials, such as sand and gravel, which have low soil sorption coefficients (ie surface area), are also "more likely" to be amenable to vacuum extraction than fine-grained materials like clay or silt. Each of the remaining CSFs can be evaluated similarly to provide a preliminary screening of the suitability of soil venting at the site of interest.
Page 29 - Lyman et al. 1982 estimating the amount of contaminant in each phase is presented below. This is followed by worksheets that can help the user qualitatively estimate phase partitioning with a minimum of field data. Volume of Floating NAPL Volume determinations of floating...