BACT – means Best Available Control Technology.  An emission limitation based on the maximum degree of emission reduction (considering energy, environmental, and economic impacts) achievable through application of production processes and available methods, systems, and techniques. BACT does not permit emissions in excess of those allowed under any applicable Clean Air Act provisions. Use of the BACT concept is allowable on a case-by-case basis for major new or modified emissions sources in attainment areas and applies to each regulated pollutant.

BART – means Best Available Retrofit Technology.   Under NAAQS, EPA requires states to make a BART analysis to predict the effect of forcing all plants to install scrubbers. States must then either carry out the forced scrubbing program, or create a state cap and trade system.

Biogenic Sources -- Biogenic emissions are produced by living organisms or biological processes.  This biogenic inventory includes emissions from plant matter as well as humans, domestic animals, and wild animals.

BPU – means Board of Public Utilities. The Board of Public Utilities is a regulatory authority with a statutory mandate to ensure safe, adequate, and proper utility services at reasonable rates for customers in New Jersey.