20220233 SSUUSTSTAAINAINABBILITILITY REY REPPORORTT Message from Management 1. Overview About Kiewit Sustainability at Kiewit Our Projects 2. Governance Corporate Governance Supply Chain 3. Environmental Environmental Stewardship Greenhouse Gases & Energy Consumption 4. Social Health & Safety Diversity, Equity & Inclusion Talent & Workforce Development Environmental Community Engagement Appendix Environmental Stewardship / Greenhouse Gases & Energy Consumption / 3 30303030