DNR Continues Work on TMDLs The Wisconsin Department of Natural Resources (DNR) is moving foward to address impaired waters through an analysis known as Total Maximum Daily Load or TMDL.  In basic terms, a TMDL establishes the amount of pollutant reduction needed from each source to reach water quality goals.  To learn more about TMDLs click here to visit DNR's website on this topic. In a positive development, DNR seems to have moved from their initial goal of establishing a numeric value for discharge from a site to best management practices for complying with TMDL standards.  During the next several years, DNR, in order to comply with EPA standards, will establish TMDLs for all waterways which are impaired in Wisconsin.  The DNR website contains a link to the current list of waterways covered.  This is a high priority issue for the association given its significant impact on quarries, pits and concrete plants.  We will continue to send out updates as appropriate. WTBA - Environmental Update 1 S. Pinckney Street Suite 300 Madison, WI 53703 608-256-6891 wtba.update@wtba.org ©2010 ESE Magazine is a product and service of wisnet.com, LLC