270 Brannan Street
270 Brannan Street will be a 202,000 gross square foot, Class A office building in the center of San Francisco’s SOMA District. The project’s irreplaceable location at 2nd and Brannan is at the heart of SOMA, San Francisco’s most desirable neighborhood for technology companies.
Silverado was contracted to perform hazardous soil remediation, demolition of an existing concrete structure, site work and mass excavation, rough grading and backfill. Asbestos abatement was performed prior to demolishing the existing 17,350 SF 2-story office building. Also demolished was an elevator/hoist and existing sidewalk and 23,933 SF of asphalt-pave parking area hardscape and landscape including rails, railroad ties, parking attendant shed, trees, bollards, signs, fences, power station and street lights/poles.
Mass excavation of 20,000 cubic yards occurred. Hazardous soil remediation was performed, handled and disposed of properly. Installation of sheets and shoring the excavation with all required tiebacks and bracing were in place. Due to the proximity of the adjacent buildings, great care was taken to insure that they remained undamaged. Because the structure was concrete block we were able to carefully demolish the property line walls by munching them down with an excavator with a thumb and bucket. Protection was placed on the walls to ensure safe operations.