Methodology for Mobile Toxics Deterministic Human Health Risk Assessment and Case Study

Air toxic emissions from on-road mobile sources are significant contributors to the degradation of air quality in urban and dense population centers. Research led by United States Environmental Protection Agency (EPA) identified more than 1162 hazardous pollutants (HAPs) exhaust evaporative sources. However, less 70 monitored regulatory agencies. HAPs emitted Mobile Sources known as Source Toxics (MSATs). The EPA estimates that approximately half cancer risk 74% noncancer health impacts toxics is attributed quantification associated with MSATs exposure remains limited date, only a few have ambient standards protect human welfare. This work presents novel validated methodology quantify myriad risks emissions. introduced form pipelined analysis process, which may be employed existing new transportation projects. proposed integrates results three different types models: vehicle inventory models such MOVES IVE, dispersion AERMOD SCIPUFF, estimate for ecological receptors 2005 Final U.S. Human Health Risk Assessment Protocol Hazardous Waste Combustion Facilities. result this research provides regulators analysts detailed awareness MSATs. A case study Saint Paul, Minnesota, modeled against data, agreement was acceptable (i.e., were within factor two observations). Three high-population locations Paul area evaluated risk, observation at these locations, Paul—Ramsey Center Anderson Office Building, calculated excess target level 1.0E-05 benzo(a)pyrene. presented paper allows regulators, analysts, engineers better multi-pathway acute chronic Moreover, science-based aid policy decision makers when considering factors most significantly affect ecology.