GSA – Denver Federal Center – Building 95

Building 95 at the Denver Federal Center houses four tenants; the National Water Quality Laboratory, the Brand of Quality Systems, National Research Programs, and the Center for Isotope Research in Earth Science and Biology. The General Services Administration (GSA) initiated a mechanical study of the exhaust and make-up air systems for the hazardous waste area of the building. Fugitive fumes were escaping from the room, and the system was unable to maintain negative pressures. 360 Engineering was hired to conduct the study for the GSA as part of the Anderson Hallas Architects IDIQ team.

As-built drawings were reviewed to determine how the system was designed to operate, including mechanical equipment, heating and cooling capacities, and controls sequence of operations. The field survey observed system operation and existing equipment, verified accuracy of as-built drawings, inspected Building Automation System (BAS), and measured airflow for supply and exhaust.

Modification recommendations were made to achieve the required performance, including new equipment, new infrastructure, re-balancing existing equipment, and adjusting setpoints and sequences of operations.


Denver, Colorado


General Services Administration (GSA)


Anderson Hallas Architects