Environmental Air Quality Expert On Feed Lot Air Emissons

The Community Association for the Restoration of the Environment in Granger, WA, has withdraw its lawsuit against the DeRuyter Brothers Dairy over air emissions.  Environmentalists have been largely unsuccessful in bringing the federal Clean Air Act to bear on the emissions of gases, such as ammonia, from large animal-feeding operations. UC Davis environmental air quality expert Frank Mitloehner says it is very difficult to do since emissions vary depending on the time of day, the temperature and humidity as well as where the measurement is taken and whether the urine and feces that breed the pollutants are fresh or old.  YakimaHerald.com reports:

With at least 74,000 cows on 72 farms, the Lower Yakima Valley is dense with dairies. Complaints about odor are routinely collected by the Yakima Regional Clean Air Agency, according to officials at the agency. That odor isn't caused by a single substance but rather a number of compounds.