Swine Feeding Operations January 1995 TNRCC Rule 116.111(3) in Regulation VI requires that Best Available Control Technology (BACT) be applied to all facilities that must obtain a permit. BACT determinations are made on a case-by-case basis. Current BACT guidelines for swine feeding operations are: A commitment to install a waste storage/treatment system that represents BACT for swine operations. This has been determined to be daily scraping/flushing of waste to a well designed two stage lagoon system or to enclosed storage tanks or any alternate systems with equal or greater odor reducing potential.