REPORTING & DISCLOSURE TRACKING OUR PROGRESS DOW | REPORTING & DISCLOSURE | 148 Dow Disclosures – GRI Content Index Similar to the approach we are now taking with injury and illness measurement, our PSCE metric focuses on both incidents that have the greatest impact, as well as incidents with the greatest potential for significant impact – including process damage, interruption or possible impact on our surrounding communities. We have defined Levels 1-4, with Level 1 incidents having the highest actual or potential impact. By 2025, our goal is to reduce the number of Level 1 and Level 2 events by more than 80% from our 2015 baseline. In 2021, the company had 26 PSCEs. This performance is slightly better than the target line for achieving our 2025 goals. We will continue our focus on PSCE reduction, specifically targeting improvement in the quality and use of our operating discipline and in our mechanical integrity preservation management system implementation. We also will strive to continue to understand and prevent our near misses with the greatest potential for avoidance. OMISSION 306-3 (2016) Significant Spills Information not available. Tracking of incidents is by the industry standard definition of PSCE. 306-4 Waste diverted from disposal OMISSION 306-4 Waste diverted from disposal Information not available. We will continue to annually assess mechanisms to be able to report this information in the future. 306-5 Waste directed to disposal Total weight of hazardous waste directed to disposal: Disposal Operation (Millions of Metric Tons) 2021 2020 2019  Incineration (w/Energy recovery) 0.262 0.355 0.367 Incineration (w/o/Energy recovery) 0.217 0.194 0.221 Landfilling 0.014 0.011 0.024 Other disposal operations 0.142 0.109 0.105 Total weight of non-hazardous waste directed to disposal: Disposal Operation (Millions of Metric Tons) 2021 2020 2019  Incineration (w/Energy recovery) 0.038 0.029 0.029 Incineration (w/o/Energy recovery) 0.385 0.309 0.296 Landfilling 0.255 0.284 0.285 Other disposal operations 0.097 0.087 0.100