Washington’s Headquarters – Storm Drainage Repairs

Flooding of the Schuylkill River from Tropical Storm Ida caused damage to the basement of Washington’s headquarters and its critical building systems. In response, the design team provided recommendations to develop more resilient systems, including fire, security, communications, electrical, and HVAC systems. Langan performed a detailed topographic and utility site survey to evaluate site elevations related to past flooding and created temporary flood protection measures for future events. We also advised on overall site design measures, including grading, swales, and drainage infrastructure for a more resilient stormwater management system, and coordinated new connections for site utilities to support mechanical system upgrades. All site improvements are being coordinated closely with the National Park Service’s archaeology team to minimize construction impacts.