Glossary C

Deutsch: Muschel / Español: Almeja / Português: Amêijoa / Français: Palourde / Italiano: Vongola

Clam in the environmental context refers to a type of bivalve mollusc found in Freshwater and marine environments. Clams play important ecological roles, contributing to water filtration, serving as a Food source for various Wildlife, and being indicators of environmental Health due to their Sensitivity to pollution and habitat changes.

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A Clarification is Clearing action that occurs during wastewater treatment when solids settle out.

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A Clarifier is a tank in which solids settle to the bottom and are subsequently removed as sludge.

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A Clarity is the clearness of the water in the stream.

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A Class 1 Railroad is a line haul freight railroad of US ownership with operating revenue in excess of $272.0 million. There are seven (7) Class 1 Railroads in the United States. Two

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A Class I Area is Under the Clean Air Act. a Class I Area is one in which visibility is protected more

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A Class I Substance is One of several groups of chemicals with an ozone depletion potential of 0.2 or higher, including CFCS, Halons, Carbon Tetrachloride, and Methyl Chloroform (listed in the Clean Air Act), and HBFCs and Ethyl Bromide (added by EPA regulations).

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A Class II Substance is a substance with an ozone Depletion potential of less than 0.2. All HCFCs are currently included in this classification. (See: Global warming potential.)

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Deutsch: Klassifizierung / Español: Clasificación / Português: Classificação / Français: Classification / Italiano: Classificazione /

A classification is the process of assigning a resource unit to one of a set of classes defined by values of specified attributes.

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Deutsch: Tonminerale / Español: Arcilla / Português: Argila / Français: Argile / Italiano: Argilla
Clay is a general term including many combinations of one or more clay minerals with traces of metal oxides and organic matter. Geologic clay deposits are mostly composed of phyllosilicate minerals containing variable amounts of water trapped in the mineral structure.

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