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The follow definitions are used in the description of the cleanup technologies

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magnetrometryA geophysical technology used to detect disruptions that metal objects cause in the earth's localized magnetic field.
mass spectroscopyAn analytical process to determine the relative atomic masses of atoms. A sample is ionized and passed through an electromagnetic field. Different ions can be identified by characteristic patterns. It is often used in conjunction with gas chromatography.
MCLMaximum Contaminant Level, established by the Safe Drinking Water Act.
mediumA specific environment--air, water, or soil- which is the subject of regulatory concern and activities.
methane A flammable gas created by anaerobic decomposition of organic compounds.
mg/kgMilligram per kilogram. One mg/kg equals to one part per million.
mg/LMilligrams per Liter. One mg/L is loosely equivalent to one part per million.
microbesA minute life form.
micrograms(ug)/kgMicrograms per kilogram. One ug/kg equals to one part per billion.
micrograms(ug)/LMicrograms per Liter. One ug/L is loosely equivalent to one part per billion.
migration pathwayA potential path or route of contaminants from the source of contamination to contact with human populations or the environment.
mixed wasteA low-level radioactive waste contaminated with hazardous waste.
monitoring wellA well drilled for the purpose of sampling groundwater to determine the characteristics of the water and the presence or absence of contaminants.
MTBEMethyl Tertiary Butyl Ether. MTBE is used to add oxygen to gasoline.
mutagenicAn agent, as a radioactive element or ultraviolet light, that causes biological mutation.

Note: A majority of the terms and definitions are based on the U.S. Environmental Protection Agency's Brownfields Innovative Technology Glossary . Some definitions have been modified/enhanced to support the Tech Tree text.

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This page was last updated OCTOBER 26, 1998
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