The Volpe National Transportation Systems Center (Volpe Center) Cambridge, MA is supporting The Federal Aviation Administration (FAA), in its aircraft-specific model development and airport air quality assessment effort. This effort includes modeling aircraft emissions impacts on air quality in the vicinity of an airport. The Volpe Center is leading a comparison of various air quality models being researched by the FAA and the Committee for Aviation Environmental Protection (CAEP), including Germany's LASat for airPORTs LASPORT). LASPORT and LASAT are packaged together as a platform required for airport-specific emissions and air quality dispersion modeling. Therefore, the Government intends to award a purchase order on a sole source basis to Janicke Consulting as they have sole access to LASat for airPORTs (LASPORT) modeling platform. The period of performance will be from date of award through 03/31/2027.