Environmental & Occupational Exposure Scientist

Specialties & Experience of this Expert Witness

Additional Information

Dr. Kristen Good is an Epidemiologist, Certified Industrial Hygienist (CIH), and Exposure Scientist with 15+ years of background and experience in risk assessment, toxicology, exposure assessment, and environmental sciences, across academia/research, private industry, and government sectors. She has a Ph.D. in Environmental Health with an epidemiology concentration from Colorado State University, a Master's degree in Environmental Management, toxicology focus, from Duke University, and a B.S. in Biology from Boston College. Her experience has included work on various indoor air quality topics (including COVID and other bioaerosols and respiratory pathogens, wildfire smoke/biomass burning, mold, and occupational chemical exposures), human subjects studies including controlled exposures/randomized controlled trial designs, and chemical risk assessment. Dr. Good has served as the leading technical authority in occupational health and indoor air quality at the Colorado Department of Public Health and Environment (CDPHE) since 2020. She manages the state’s indoor air quality improvement programs (including work related to improving IAQ in schools, workplaces, and other facilities, and currently a wildfire smoke preparedness program that focuses on the impact of smoke on indoor air quality and health) and occupational health surveillance and response initiatives. She is also involved in a variety of disease control and public health emergency response efforts, as the occupational health and safety and environmental health subject matter expert in the state's All-Hazards response group. She regularly advises partners, workplace managers, and the general public on health and safety regulations and best practices, PPE and administrative controls to reduce exposures/safety risks, employer liabilities related to occupational health and safety, and post-incident response related to a variety of occupational health and safety concerns and scenarios. From 2020-2022, Dr. Good led the Industry Response Team of the state’s COVID-19 pandemic response. She was responsible for advising on workplace outbreak prevention, investigation, and response for hundreds of workplace outbreaks, and employer responsibility across a wide variety of industry sectors. She also worked with the Colorado Governor’s Office and other state agencies on COVID-19 guidance and policy development. In 2025, Dr. Kristen Good cofounded RedSpire with her partner, Nicholas Good. Dr. Nicholas Good is an Aerosol Scientist with over 20 years of experience in scientific instrument development, evaluation, and deployment. He has worked across academia, research, and private industry in atmospheric chemistry, cloud physics, indoor air quality, and environmental health. Dr. Nicholas Good focuses on bridging emerging technology—both hardware and software—from the research laboratory into solutions for practical real-world problems. He holds a Ph.D. in Atmospheric Science from Manchester University and a B.S in Physics from The University of Manchester. Dr. Nicholas Good provides consulting services supporting clients' needs in occupational health and safety, exposure assessment, and environmental health issues—with particular focus on asbestos and benzene exposure reconstructions. Together, the RedSpire team supports clients with innovative, efficient approaches to complex problems in areas including exposure reconstruction, indoor air quality/airborne contaminants, biomass burning and combustion emissions, and epidemiology/disease causation.