North Carolina’s hog operation facilities release approximately 300 million tons of ammonia into the atmosphere on a daily basis.
As you may imagine, the release of ammonia into the atmosphere is beyond troubling. For example, ammonia is one of the main players behind acid rain.
Most of the worry also stems from the fact that substances like ammonia pose a major threat to nearby waterways and vegetation, particularly if not disposed of properly.
For a wonderfully detailed overview of the environmental effects of hog operations, please read this report by the Environmental Defense Fund.