T.F. Green Airport Improvement Program - FEIS Chapters - PVD

T.F. Green Airport Improvement ProgramEnvironmental Impact Statement and Final Section 4(f) Evaluationforecasts (discussed in Section 5.1.3, Operations Forecast Update) result in lower airport-related emissions andestimated ambient pollutant concentrations from those reported in the DEIS.5.7.3.1 Impacts MethodologyThe following methodologies were used in the air quality analysis:• FAA’s Emissions and Dispersion Modeling System (EDMS) was used to calculate emissions from aircraft, GSE,and APU. 379 EDMS is the FAA-required and EPA-preferred model for assessing airport-related sources of airemissions. 380• For motor vehicles air quality analysis the EPA MOBILE6.2 model was used. 381 Input data for the RhodeIsland Motor Vehicle Inspection and Maintenance (I/M) Program, the vehicular fleet mix and age, as well aslocal meteorological conditions (i.e., temperature) were obtained from RIDEM. 382• For the CO “Hot-Spot” analyses and construction emissions inventory, the EPA CAL3QHC and NONROADmodels were used, respectively.The models used for the assessment are listed in Table 5-74.Table 5-74Air Quality Assessment ModelsModel Application CommentsEDMS Emissions model used to compute aircraft main engine and EDMS is the FAA-required and EPA-preferred model for assessingAPU, GSE and motor vehicle engine and fueling emissions of airport-related air emissions. For this analysis, the most recentCO, NOX, SOX, PM10/2.5, VOC, and HAPs.version (EDMS version 5.1.2) available was used for the analysis.Dispersion model used to compute ambient concentrations ofCO, NO2, and PM10/2.5 on the Airport and in neighboring communities.MOBILE6.2 Source of emission factors for motor vehicle and road- MOBILE6.2 is the EPA database of on-road emission factors and isregistered GSE engines.the most recent version of this model. For this analysis, motor vehiclefleet population characteristics, emission control measures and otherparameters were provided by RIDEM.NONROAD Source of construction vehicle and equipment emission NONROAD is the EPA database of emission factors for vehicles andfactors.equipment that are not road-registered or otherwise not contained inMOBILE6.2. For this analysis, the NONROAD (Version 2005.1.0) wasused.CAL3QHC Dispersion model used for Intersection CO “Hot-Spot” CAL3QHC is the EPA-preferred model for assessing COAnalysis.concentrations near roadways and intersections.Source: KB Environmental Sciences, Inc., 2008.CO Carbon monoxide. APU Auxiliary power unit.EPA Environmental Protection Agency. EDMS Emissions & Dispersion Modeling System.NOX Nitrogen oxides. FAA Federal Aviation Administration.RIDEM Rhode Island Department of Environmental Management. NO2 Nitrogen dioxide.PM10/2.5 Particulate matter (10 and 2.5 microns in aerodynamic diameter). SOX Sulfur oxides.HAPs Hazardous Air Pollutants. VOC Volatile Organic Compounds.379 Emissions and Dispersion Modeling System User’s Manual with Supplements, EDMS Version 5.1.2, FAA, September 2009.380 Environmental Desk Reference for Airport Actions, FAA, October 5, 2007.381 User’s Guide to MOBILE6.1 and MOBILE6.2, Mobile Source Emission Factor Model, U.S. Environmental Protection Agency, August 2003.382 Email from Ron Marcaccio to KB Environmental Sciences Inc., Rhode Island Department of Environmental Management, October 26, 2006.Chapter 5 - Environmental Consequences 5-151 July 2011\\mawatr\ev\09228.00\reports\FEIS_Final_July_2011\PVD_CH05_Environmental_Cons_JUL_2011.doc