20Feb2026 Family House Mission Bay, San Francisco breaks ground September 17th February 20, 2026 Terra-Petra below grade, Family House, Methaned Mitigraion, Mission Bay, San Francisco, Terra-Petra, waterproofing Methane Barrier Installation, Methane Mitigation Design Projects, Northern California Projects, Uncategorized, Waterproofing We are very excited to be a part of this fantastic project. Terra-Petra will handle the methane mitigation as well as below grade waterproofing design and inspection. Click on the image to download the entire San Francisco Business Times supplement.