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Emission measurements

EF&EE has the equipment and expertise to carry out credible, independent emission measurements on nearly anything that moves!


We consult on measurement and control of air-pollutant emissions from motor vehicles and other mobile sources, as well as conventional and alternative fuels and air-quality issues.


We consult worldwide and have worked with numerous organizations throughout the United States, Latin America, and Asia.

Expert witness

Company founder and President Christopher Weaver serves as an expert witness regarding air-pollutant emissions and controls. Mr. Weaver was an expert witness for the U.S. Justice Department in its landmark “defeat device” case against the major heavy-duty diesel engine manufacturers.