Disclosure# Disclosure Topic 2021 Response 305-5 Reduction of GHG emissions GHG emissions reduced as a direct result of reduction initiatives, in metric tons of CO 2 equivalent: 937,965 MT CO 2 e Gases included in the calculation: CO 2 , CH 4 , N 2 O Base year or baseline, including the rationale for choosing it: The GHG emissions in the year prior to the implementation of the reduction initiatives is used as the baseline. Scopes in which reductions took place; whether direct (scope 1), energy indirect (scope 2), and/or other indirect (scope 3): scope 2 and scope 3 Standards, methodologies, assumptions, and/or calculation tools used: GHG emissions reduction data is collected, calculated, and reported in accordance with the GHG Protocol and the most recent CDP Climate Change Reporting Guidance for Emissions Reduction Initiatives (C4.3). For more information, refer to our most recent CDP Climate Change response on our reporting page . Material Topic: Waste and Recycling GRI 306: Waste 103-1 Explanation of the material topic and its Boundaries 2021 Corporate Responsibility Report: Our Company > ESG Approach 2021 Corporate Responsibility Report: The Numbers and Small Print > Material Topic Definitions 103-2 The management approach and its components Environmental Policy CDP Climate Change Response 2021 Corporate Responsibility Report: The Environment > Waste and Recycling 103-3 Evaluation of the management approach 2021 Corporate Responsibility Report: Our Company > ESG Approach 306-1 Waste generation and significant waste-related impacts T-Mobile manages its operational waste in an environmentally responsible manner, including Municipal Solid Waste (MSW), regulated waste, shred paper, and electronic waste. We manage impacts related to waste generated in our own activities. GRI Index Continued 2021 CORPORATE RESPONSIBILITY REPORT OUR PEOPLE OUR GOVERNANCE OUR COMMUNITIES 81 OUR COMPANY THE ENVIRONMENT THE NUMBERS AND SMALL PRINT