Media
Specific environments-air, water, soil-which are the subject of regulatory concern and activities.

Mentor
An experienced professional who offers help and advice to a less experienced person.

Mercury
A heavy metal that can accumulate in the environment and is highly toxic if breathed or swallowed. (see heavy metals)

Methane
A colourless, non-poisonous, flammable gas created by anaerobic decomposition of organic compounds.

Method 18
A US EPA test method, which uses gas chromatographic techniques to measure the concentration of volatile organic compounds in a gas stream.

Method 23
A US EPA reference method to determine the dioxin and furan concentration in a gas stream.

Micron
A unit of length. One millionth of a metre or one thousandth of a millimetre. One micron equals 0.00004 of an inch.

Mitigation
Measures taken to reduce adverse impacts on the environment.

Mobile Incinerator Systems
Hazardous waste incinerators that can be transported from one site to another.

Mobile Source
Any non-stationary source of air pollution such as cars, trucks, motorcycles, buses, aeroplanes, locomotives.

Molecule
The smallest division of a compound that still retains or exhibits all the properties of the substance.

Monitoring
Periodic or continuous surveillance or testing to determine the level of compliance with statutory requirements and/or pollutant levels in various media or in humans, plants and animals.

MSW
Municipal Solid Waste (Incineration).MW(th)
Mega Watts (Thermal)