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Lengfellner holds the Certified Safety Professional (CSP) certification. She has earned a Bachelor of Science in Biology, with a minor in Environmental Safety, and a Masters degree in Occupational Safety Management from the University of Central Missouri. She wrote Environmental Assessments for government projects in California. Her many years working in libraries as a cataloger and at the library reference desk make her a good source for research. She is a member of the American Society of Safety Professionals in the Academic Practice Specialty, and the Women In Safety Excellence (WISE) Common Interest Group.