On this areal in the community of Stocking, factory equipment for the production of tar-products was based after World War II. For the storage of tar and tar-products, cellars and tar pits were erected. Due to the operation of the plant, subsoil and groundwater were contaminated with tar-products. In the course of rehabilitation measures in the 1960-ies, approx. 8.000 l creosote trickled into the ground during the removal of a vessel. In addition, it was found out, that the industrial well had been utilized for the absorption of overflowing tar-products and surface water. In 1990, tar was detected on the surface by the water surveillance authorities.