GLOSSARY

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

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ENVIRONMENTAL IMPACT

The potential adverse environmental effect of the release of a material into the environment.


ENVIRONMENTAL TOXICITY

The hazardous effect that a given compound or chemical has on the environment (soil, water, air) observed during environmental tests on the effects of the substance on aquatic and plant life.


EPIDEMIC

Widespread outbreak of a disease.


EPIDEMIOLOGY

The science that deals with the study of disease in a general population (e.g., Kawasaki Syndrome). Determination of the incidence (rate of occurrence) and distribution of a particular disease (by age, sex or occupation).


EQUILIBRIUM MOISTURE CONTENT

(EMC) – The condition in which the moisture content of a structural material has stabilized in relation to relative humidity and temperature of surrounding air; i.e., no change in moisture content as absorption and evaporation are continuing at the same rate


EQUILIBRIUM RELATIVE HUMIDITY

(ERH) – The ERH is the relative humidity of the air when it is in equilibrium with the built environment (i.e., the air is neither gaining moisture from, nor losing it to the material; or the point at which a hygroscopic material and the air within it contain the same amount of vapour)


EQUIPMENT DECONTAMINATION

Actions taken to remove contamination from restoration or remediation equipment after use.


EQUIVALENT

Equal in utility, value and appearance, often applied when a facsimile replacement is not available.


ESCHERICHIA COLI

(E. coli) – A gram-negative bacterium, usually associated with faecal matter (sewage) that can cause severe diarrhoea and inflammation of the intestines, known as gastroenteritis.


ETCHING

A uniform pitting on the surface of glass, metal or stone caused by chemical reaction with an acid; a form of graphic art work in which the image is created by the transfer of ink lodged in recesses scribed into the surface of a metal plate.