For over 13 years, we were responsible for evaluating groundwater monitoring data and designing monitoring well networks for the state enterprise DIAMO. The monitored environmental burden is associated with the former uranium ore processing plant and the disposal of treatment sludges in surface ponds and former lignite open-pit mines. The monitoring covered an extensive area around the towns of Mydlovary, Olešník, Zahájí, and Zliv in South Bohemia.