This document was prepared by ICF International under contract through Metro’s Sustainability Program administered by Metro’s Environmental Compliance and Services Department. As a leader in environmental responsibility, the Los Angeles County (California) Metropolitan Transportation Authority (Metro) is pursuing a variety of sustainability strategies to maximize transportation efficiency, access, safety, and performance while minimizing energy use, consumption, pollution, and the generation of waste. This report evaluates current and potential future Metro sustainability strategies for their costs and impacts on greenhouse gas emissions. Strategies include those focused on Metro's vehicle fleet, buildings, and opportunities to reduce vehicle miles traveled (VMT).