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*Increases since 2013 are attributable to major construction projects and expanded carbon capture and sequestration research activities unrelated to power generation.
*Toxics Release Inventory (TRI) is a program of the U.S. Environmental Protection Agency (EPA) that tracks the management of toxic chemicals by U.S. industrial facilities. TRI annually reports the amount and type of chemicals released to the environment and/or managed through recycling, energy recovery and treatment.