Atlas is the tallest residential tower in downtown Oakland, CA. It comes under the umbrella of Carmel Properties' portfolio of high-end residential properties. It houses 633 residential units and 17,350 square feet of retail space. Challenge The tower is located next to a busy street, and because of this, membranes could not be used. In addition, the structural design of the elevator pits and vaults made the use of membranes impossible. The lower level of the parking structure is approximately 6 feet below the water table. Solution Hycrete's warranted System W was used in the elevator pits eliminating the need for membranes. The walls of the elevator pits were located at the bottom of the multi-story shear walls for the building core. System W was also used in the utility vault as the structure was located next to the street. Using Hycrete's System W simplified design and sped up the construction timeline. Result The structure has been dry and only required minimal warranty repair in the elevator pit. The waterproofing problems were successfully mitigated and no further repair has been needed.