Welcome to the Sustainability section of the Town's website. The Sustainability section was created to let you know what we are working on at the Town to make Portola Valley a more sustainable community and to connect you with information and resources that can help you make choices about living more sustainably. By working together and making individual contributions, we can improve our community and meet the greenhouse gas emissions reduction goals we’ve committed to under the Mayor’s Climate Protection Agreement and Assembly Bill 32, the California Global Warming Solutions Act of 2006.