Demolition of the RK9 boiler, including the complete demolition of the C301 boiler hall and all related buildings – two fuel oil management buildings, four electrical substations, three electrofilters, flues up to the chimney, supporting steel structures, pipes and cable distribution inside and outside the affected buildings, building structures up to level 150 mm below ground, removal and disposal of all waste or generated material – except uncontaminated concrete rubble. The remaining structures were secured by adding steel structures. The work took place during the daily operation of the Mondi Štětí a.s. premises.