Posted: 01.23.2012

The Wisconsin Assembly Natural Resources Committee has recommended passage of AB-195, the Agriculture Air Emissions bill, that extends the exemption for air emissions from animal agricultural waste from DNR regulation (NR 445), which is set to expire next summer.  This exemption has been in place for a number of years as Wisconsin, and all other states, wait for guidance on this Clean Air Act regulation from the U.S. EPA.

DNR rule, NR 445, establishes ambient air standards for specific contaminants for a variety of stationary sources.  For purposes of agricultural waste, NR 445 establishes acceptable ambient air concentrations for ammonia and hydrogen sulfide.  Under the rule, “agricultural waste” includes livestock manure, animal waste byproducts, litter and bedding.  Compliance with the limits in NR 445 is measured at a farm’s property line.

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