HMMH performed a feasibility analysis for a proposed 650 kW emergency generator at MIT’s Eastgate building. The school was concerned about potential downwash impacts from the generator plume at a nearby daycare center and at air intakes and operable window locations.
An analysis was performed to identify a preferred location for the generator which minimized air quality impacts at these sensitive receptor locations. HMMH performed a good engineering practice (GEP) analysis for two generator locations to account for the potential impacts the buildings may have on the dispersion of the generator plume. Ambient impacts from the generator were evaluated at a variety of nearby sensitive receptor locations using the EPA approved AERMOD dispersion model for comparison to the NAAQS. The analysis was completed to support the Environmental Results Program application to MADEP which is required for all emergency generators greater than 37 kW.