05.07.2009

Sediment consisting of broken fragments derived from preexisting rocks and transported elsewhere and redeposited before forming another rock

A substance with an ozone depletion potential of less than 0.2. All HCFCs are currently included in this classification

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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The physical location where a local distribution company measures and receives gas from an upstream pipeline company. Citygates are important market centers for the pricing of natural gas