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Delayed Coking Unit is a refinery process unit in which high molecular weight petroleum derivatives are thermally cracked and petroleum coke is produced in a series of closed, batch system reactors. A delayed coking unit consists of the coke drums and ancillary equipment associated with a single fractionator.

Demographic Index is an average of these two indicators:  Percent Low-Income: The percent of a census blocks group's population in households where the household income is less than or equal to twice the federal "poverty level" and Percent People of Color: The percent of individuals in a census block group who list their racial status as a race other than white alone and/or list their ethnicity as Hispanic or Latino. That is, all people other than non-Hispanic white-alone individuals. The word "alone" in this case indicates that the person is of a single race, not multiracial.  The formula is as follows: Demographic Index = (% people of color + % low-income) 

Direct emitters are facilities that combust fuels or otherwise put GHGs into the atmosphere directly from their facility. An example of this is a power plant that burns coal or natural gas and emits carbon dioxide directly into the atmosphere.

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