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State & Municipal Government



Massachusetts Port Authority
Boston, Massachusetts

EA provides on-call environmental consulting services to the Massachusetts Port Authority (Massport) at Logan International Airport in the areas of air and water quality compliance. EA supported the acquisition of a Massachusetts Department of Environmental Protection new source compliance certification by modeling emissions of all criteria pollutants from a new electrical generator.  EA also evaluated the potential for enhanced NOx reductions at Logan's Central Heating Plant.  In order to maintain compliance with Logan Airport's Title V Permit recordkeeping requirements, EA updated a tool for calculating snowmelter equipment emissions and upgraded the procedure for generator and boiler emissions calculations.  EA is currently managing the second year of a 2-year ambient air monitoring program to determine potential air quality impacts of Logan’s operations with the addition of a new centerfield taxiway.  EA is responsible for field programs, data collection and management, and data analysis and reporting.  EA recently completed the second and final phase of a water quality study that evaluated the potential impacts from airport deicer discharges on Boston Harbor.  EA's evaluation was based on the results of an extensive deicer monitoring program conducted by Massport to characterize composition of the discharges, including aircraft and airfield deicer constituents.  EA was retained by Massport to evaluate the impacts to surface water and produce the final report to be submtited to the U.S. Environmental Protection Agency.  EA completed mixing zone analyses for three outfalls to predict ambient surface water concentrations of deicer chemicals. A flushing model of Winthrop Bay was constructed to address the possible buildup of discharge concentrations and potential for impact on dissolved oxygen levels.  Based on these model results, EA conducted a risk assessment and determined that the ability of receiving waters to meet their designated uses was not impaired by the deicer discharges. The water quality study was completed and submitted to the U.S. Environmental Protection Agency within the permit required deadline and within the allotted budget.