Occupational Toxicology Consultants: 3

RedSpire LLC provides Environmental Health Consulting services to support clients' needs in Occupational and Environmental Health and Safety, Exposure Assessment, and other issues, with a focus on Technology Integrations that improve efficiency, accuracy, and ultimately lead to better solutions.

Generative Artificial Intelligence and Purpose-Built Software Consulting Services

Accelerated Review - Generative AI tools allow RedSpire to synthesize scientific literature, regulatory documents, and case records ethically and transparently at unprecedented speed. They provide clients with a comprehensive evidentiary foundation in days, not weeks.

Advanced Exposure Modeling - RedSpire integrates deterministic and probabilistic models—including dispersion and receptor-based approaches—with transparent assumptions, delivering quantitative reconstructions.

Quality Assurance - Software-driven error detection continuously flags inconsistencies, identifies gaps, and evaluates reference quality.

Secure Collaboration and Reporting - RedSpire uses technology to improve analysis while protecting confidentiality: confidential access, no training conducted using client data.

Dr. Kristen Good, MEM, PhD, Principal Health Scientist; Epidemiologist is passionate about applying data-driven, scientifically-supported solutions to public health problems. In addition to her technical subject matter expertise and strong scientific background - bringing over a decade of experience advising partners on incident/emergency responses and leading programmatic initiatives related to air pollution exposures, indoor air quality, and respiratory disease; wildfires, communicable disease outbreaks, and occupational health - she is also an experienced supervisor/team leader and project manager responsible for grant administration, contractor relationships, and fiscal management.

Dr. Good has over 15 years of scientific background and experience in risk assessment, toxicology, exposure assessment, and environmental sciences, across academia/research, private industry, and government sectors. I have led design, implementation, and data analysis for multiple large human participant research studies and laboratory-based chemical emissions monitoring campaigns. I have Designed and executed multi-million dollar public health initiatives, including: a $53-million statewide program that delivered over 45,000 portable HEPA air cleaners to over 1,500 K-12 schools and early childhood education centers within a rapid 9-month period; a $20-million small grants program that provided funding for community-based COVID-19 recovery efforts to 68 local non-profits; and a $4-million initiative to conduct indoor air quality and ventilation assessments and improvement efforts in workplaces and community buildings throughout the state. In 2025, I cofounded a consulting firm that is focused on the application of AI-based technology.

Dr. Nicholas Good, Co-Founder & Exposure Science Lead, 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. Good focuses on bridging emerging technology—both hardware and software—from the research laboratory into solving practical real-world problems. He holds a Ph.D. in Atmospheric Science from Colorado State University and a B.A. in Earth and Planetary Science from UC Berkeley.

Dr. 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. He co-founded CloudSci LLC (2023), commercializing airborne particle measurement technologies for research and related markets, and owns Good Science LLC (2019-present), providing specialized environmental consulting services.

Since 2020, Dr. Good has served as Research Scientist III at Colorado State University's Department of Civil and Environmental Engineering, leading research on air quality and human health with emphasis on indoor air quality, building performance, bioaerosols, and novel health effects of air pollution. He has published over 60 peer-reviewed scientific papers and led or co-led over a dozen sponsored research projects totaling millions of dollars in funding from DOE, NASA, CDC, and other agencies.

Dr. Gavin McMeeking, Chief Executive Officer & Co-Founder, is an Aerosol Scientist with over 20 years of background and 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. McMeeking focuses on bridging emerging technology—both hardware and software—from the research laboratory into solving practical real-world problems. He holds a Ph.D. and M.S. in Atmospheric Science from Colorado State University and a B.A. in Earth and Planetary Science from UC Berkeley.

Dr. McMeeking leads the company's strategic direction and client services. He co-founded CloudSci LLC (2024), which commercializes airborne particle measurement technologies for research and related markets. Previously, he held leadership roles at Handix Scientific LLC as VP of Research & Development (2020-2022) and at Droplet Measurement Technologies as Scientist/Sales Specialist (2012-2015).

Dr. McMeeking has published over 60 peer-reviewed scientific papers in aerosol science and technology, and has led or co-led over a dozen sponsored research projects. He has advised governmental organizations including the Department of Energy, National Science Foundation, and NASA on topics ranging from instrument development, atmospheric measurement techniques, black carbon aerosol impacts, wildfire emission characterization, and technology translation.

View RedSpire LLC's Expert Witness Profile.

Tom Jonaitis, DABT, is a Board Certified Toxicologist and Product Safety / Regulatory Consultant with 18 years of experience. He has broad expertise in the areas of Safety and Exposure Assessment, Regulatory Compliance, and Toxicology Evaluations.  

Mr. Jonaitis helps companies efficiently navigate and comply with various regulations and obstacles in the consumer product, food, cosmetic, dietary supplement, and chemical industries. His has co-authored several manuscripts in peer-reviewed journals on the topics of safety, risk assessment, and other research.

Background Experience - Prior to forming RegTox Solutions, Mr. Jonaitis served as Manager of Toxicology & Regulatory Affairs at Intertek Scientific & Regulatory Consultancy (2005-2018). He worked as subject-matter expert (SME) and client contact for matters related to California Proposition 65, including presenting webinars and presentations. He also conducted human exposure assessments in relation to chemicals in food, dietary supplements, consumer products, cosmetics, as well as deriving exposure limits for carcinogens, reproductive / developmental or other toxins using traditional and benchmark dose modeling approaches.

Business Consultant Services:

• Regulatory Compliance Evaluations
• Scientific Literature Hazard Reviews and Summaries for Chemicals / Substances
• Creating Pre-Market Quality and Safety Dossiers for Novel Food / Dietary Supplement Ingredient Applications (primarily for US, Canada, Australia)
• Safety Assessments
• Label Claims Analysis and Compliance
• Deriving Exposure Limits
• HazComm, Pesticide Applications, and various other niche areas
• California Proposition 65 Compliance (and how to avoid costly enforcement)

Ted W. Simon, PhD, DABT, is an award winning Environmental Toxicologist and Scientist. His expertise is in toxicology, risk assessment, mathematical modeling, statistics, neuroscience, and environmental / ecological health issues.

Dr. Simon has over 10 years of experience as a toxicologist employed by the Environmental Protection Agency (EPA). He served as EPA’s senior toxicologist in the waste management division working on risk and soil cleanup.

Teaching Experience - Since 2001, Dr. Simon has served as an Instructor / Adjunct Professor in the Department of Environmental Health Science, College of Public Health, at the University of Georgia.

Public Speaker - Well published, including the author of a textbook on toxicology and environmental risk assessment, Dr. Simon has extensive national and international public speaking experience. Since 1996, he has been delivering seminars and lectures to universities and national institutes on many subjects within his area of expertise. In 2016, he delivered a lectures on “Bayesian Methods for Application of Uncertainty Factors,” to the Society of Toxicology Annual Meeting, New Orleans, LA, and “Quantitative Prediction of Phenotypic Change from High Throughput Assay Results,” to the EPA's Workshop on In Vitro to In Vivo Extrapolation, Research Triangle Park, NC.

Litigation Support - Dr. Simon has over 15 years of experience offering expert witness services to counsel representing both plaintiff and defendant. He has been retained over 20 times since 2000 for cases involving environmental risk, drug and alcohol cases, DUI, accidental poisoning, and intellectual property. Dr. Simon has particular expertise in dioxin-like chemicals and polychlorinated biphenyls (PCBs). His services include consulting, reports, deposition, and trial testimony when necessary.

Areas of Expertise:

Dioxins PCBs Drugs Alcohol Poisoning DUI / DWI Water Contamination Soil Contamination Environmental Risk Assessment

Environmental Toxicology Carcinogenicity Food Contamination Pesticides Fracking Lead Marijuana Polychlorinated Biphenyls Intellectual Property