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According to Woiwode , January 's victory resulted from a strong coalition between environmentalists , rural residents and family farmers and a campaign that used a variety of tactics - - including a petition to the EPA , two lawsuits against CAFOs and three " tour de manures , " which gave concerned citizens a firsthand look at these polluting facilities - - to put pressure on the state and the local agribusiness community . In Oklahoma , the Club filed suit against Seaboard Corporation , a CAFO near the Texas Panhandle . CAFOs pose serious health and environmental risks because of the unsanitary way they discard their waste - - draining manure sludge into rivers or overflowing dumpsters with hog carcasses . Carolina graduate student Sacoby Wilson wanted to better understand the human exposure to ammonia by measuring ammonia levels in areas near hog CAFOs in eastern North Carolina . Mississippi : Organizers have helped prevent new CAFO permits under a moratorium . Animal factories , also called concentrated animal feeding operations ( CAFOs ) , crowd thousands of animals into barns the size of football fields and produce an estimated 2.7 trillion pounds of animal waste nationwide each year . The collected data and constructed ammonia concentration or index maps act as indicators of relative exposure for human populations that live near a hog CAFO . Michigan activists are now calling for a moratorium on new CAFOs until the state 's pollution protection permit system is in place . The closer a populace is to the hog CAFO , the more intense the exposure .