Christian E. Lindhjem

Dr. Christian E. Lindhjem is an expert on emissions from highway and non-road vehicles, engines and fuels. Prior to joining Ramboll, Chris worked at USEPA’s Office of Transportation and Air Quality (previously named Office of Mobile Sources) on on- and off-road mobile source regulation development, emission measurements and analysis, emission control strategies and emission inventory modeling, including regulated pollutants and chemical compositional analysis to estimate toxic and other emissions. Chris has evaluated—and continues to consult on—a broad range local and national mobile source emission issues. These include emission estimates and potential emission reductions from a variety of planned or demonstrated control strategies for on-road gasoline and heavy-duty diesel vehicles, as well as off-road equipment. Currently, he works with local, regional and national officials and private clients to improve on- and off-road (agricultural, commercial marine, locomotive, construction and mining, recreational and commercial marine vessels, and lawn and garden equipment) emission inventories for regional evaluation, as well as individual facilities, such as ports, rail yards and metropolitan areas. Chris holds a PhD in chemical engineering from the Rensselaer Polytechnic Institute, and an MS in chemical engineering from the University of Michigan.