The document summarizes Missouri's history with developing numeric nutrient criteria for lakes. In 2009, the state approved numeric criteria which the EPA later disapproved in 2011. In response, the state department developed alternate criteria in 2014. The criteria are meant to protect designated water uses and follow ecoregions. The schedule includes developing an impact report in 2014, a public comment period and hearing, with the new rule to take effect in 2015 or 2016.