Sidenor 2021 Sustainability Report. Non-financial information statement

60 EXAMPLES OF WASTE RECOVERY Around 180 tonnes of sewage sludge were recovered, thus avoiding their landfill disposal and achieving a waste recovery percentage of 95%. Sewage sludge is high in iron. The recovery process consists in using this iron content as a by-product for the production of counterweights for industrial machinery. In order to be recovered, sludge must comply with specific humidity and oil content conditions imposed by the recovery company. In 2022, we will further work to comply with these parameters in order to ensure the quality of this by- product. During 2021, a total of 163,134 tonnes of waste was generated (112,516 tonnes in 2020). Among them, 148,165 tonnes correspond to non-hazardous waste and 14,969 tonnes to hazardous waste. 54% of the total amount of non-hazardous waste corresponds to black slag recovered in steel aggregate. For this product, we have various CE marking certificates which encompass its use as granular layers, bituminous mixtures and concretes. Sidenor is a partner in the BIRBALAS project , whose final objective is to develop new railway ballast and sub-ballast products from electric arc furnace slags and thus open a new path for the management of this waste as well as ensure, at the same time, compliance with specifications which guarantee its functionality as well as environmental safety and adequacy. Waste management index (WMI) Kg of waste generated among tonnes of liquid steel 2019 2020 2021 221 211 236 Sustainability Report 2021 | Environmental sustainability Recovery of sewage sludge at Vitoria: