Lampblack is a finely divided, bulky, black soot, at one time the most important black pigment used in the manufacture of printing inks. It is one of several gas plant residues found at manufactured gas plant (MGP) sites.
Land Revitalization Initiative
The Land Revitalization Initiative was undertaken by EPA in partnership with states, tribes, territories, and a broad range of stakeholders to restore land to productive economic and green space uses. In April 2003, EPA announced the Land Revitalization Agenda to incorporate land reuse into the RCRA, brownfields, and underground storage tank (UST) hazardous waste cleanup programs.
Laser-Induced Fluorescence/Cone Penetrometer
Laser-induced fluorescence/cone penetrometer is a field screening method that couples a fiber optic-based chemical sensor system to a cone penetrometer mounted on a truck. The technology can be used for investigating and assessing soil and water contamination.
A leachate is a contaminated liquid that results when water collects contaminants as it trickles through wastes, agricultural pesticides, or fertilizers. Leaching may occur in farming areas and landfills and may be a means of the entry of hazardous substances into soil, surface water, or groundwater.
Light Nonaqueous Phase Liquid (LNAPL)
An LNAPL is one of a group of organic substances that are relatively insoluble in water and are less dense than water. LNAPLs, such as oil, tend to spread across the surface of the water table and form a layer on top of the water table.
Long-Term Monitoring (LTM)
LTM typically is performed to verify that contaminants at a site pose no risk to human health or the environment and that natural processes are reducing contaminant levels and risk as predicted.