Record Display for the EPA National Library Catalog
RECORD NUMBER: 9 OF 29
|OLS Field Name||OLS Field Data|
|Main Title||DNAPL site characterization : quick reference fact sheet.|
|CORP Author||Environmental Protection Agency, Washington, DC. Office of Emergency and Remedial Response.|
|Publisher||U.S. Environmental Protection Agency,|
|Report Number||9355.4-16FS; EPA/540/F-94/049; OSWER-9355.4-16FS|
|Subjects||Dense nonaqueous phase liquids. ; Nonaqueous solvents--Environmental aspects. ; Organic water pollutants.|
|Additional Subjects||Waste management ; Superfund ; Coal tar ; Creosote ; Pesticides ; Hazardous materials ; Waste disposal ; Site characterization ; Environmental transport ; Soil gases ; Ground water ; Water pollution control ; Site surveys ; Chemical compounds ; DNAPL(Dense Nonaqueous Phase Liquids) ; Dense nonaqueous phase liquids ; Chlorinated solvents|
|Collation||12 pages : illustrations ; 28 cm.|
Dense nonaqueous phase liquids (DNAPLs), such as some chlorinated solvents, coal tar wastes, creosote based wood-treating oils, and some pesticides, are immiscible fluids with a density greater than water. As a result of widespread production, transportation, use, and disposal of hazardous DNAPLs, particularly since 1940, there are numerous DNAPL contamination sites in North America. The potential for significant long-term groundwater contamination by DNAPL chemicals at many sites is high due to their toxicity, limited solubility (but much higher than drinking water limits), and significant migration potential in soil gas, groundwater, and/or as a separate phase liquid, DNAPL chemicals, particularly chlorinated solvents, are among the most prevalent groundwater contaminants identified in groundwater supplies and at waste disposal sites.
"Publication 9355.4-16FS." "EPA/540/F-94/049." "PB94-963317." "September 1994."