Dealing with DNAPLs calls for new site investigation, remediation strategies

Journal Article · Sun Aug 01 04:00:00 EDT 1993 · Hazmat World; (United States)

OSTI ID:6244404

Moore, M B; Krumhansl, R ^[1]

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1. ENSR Consulting and Engineering, Acton, MA (United States)

Dense, non-aqueous phase liquids (DNAPLS) have caught the attention of industry, regulators and the public. These hazardous liquids pose particular difficulties and require unique site remediation approaches. DNAPL is a group of hydrocarbon-based liquids heavier than--and which sink in--water. DNAPL compounds are classified into three groups, based on physical characteristics: Chlorinated solvents, creosote and coal tar, and PCBs. DNAPL usually is found in complex mixtures when present at a cleanup site. DNAPL contaminants have been detected at thousands of locations in North America. Because DNAPLs are used widely in industrial and retail operations, typical historical disposal practices suggest contamination will be found at thousands of additional sites. For example owners of a metal fabricating facility who disposed degreasing solvents at town-designated locations in a municipal landfill have been found liable for millions of dollars in Superfund characterization and cleanup costs. New technologies are being developed for site characterization and remediation. Unique site approaches are necessary, say regulators; staying abreast of DNAPL developments may save companies thousands of dollars in site investigation and cleanup.

• OSTI ID: 6244404
• Journal Information: Hazmat World; (United States), Journal Name: Hazmat World; (United States) Vol. 6:8; ISSN HMWOED; ISSN 0898-5685
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
540220* -- Environment
Terrestrial-- Chemicals Monitoring & Transport-- (1990-)
AROMATICS
CHLORINATED AROMATIC HYDROCARBONS
COAL TAR
CONTAMINATION
CREOSOTE
GROUND WATER
HALOGENATED AROMATIC HYDROCARBONS
HAZARDOUS MATERIALS
HYDROGEN COMPOUNDS
LAWS
LIABILITIES
LIQUID WASTES
MANAGEMENT
MATERIALS
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
OTHER ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
POLLUTION LAWS
POLYCHLORINATED BIPHENYLS
REMEDIAL ACTION
SITE CHARACTERIZATION
SOILS
TAR
US SUPERFUND
WASTE DISPOSAL
WASTE MANAGEMENT
WASTES
WATER