Our team of ten Ph.D level scientists and three industry experts guide UL in standards development and provide technical guidance to help clients navigate complex issues in the health, sustainability, environmental and supply chain arenas.

UL Environment



Anne Bonhoff, Global Head of Chemistry, UL Environment

Through her vision and over 25 years of expertise Dr. Anne Bonhoff develops targeted business solutions to ensure the standardization, harmonization, and quality of chemical testing for consumer goods throughout UL’s state-of-the-art laboratories. An industry thought leader, she is a recognized global expert on the topics of restricted substances, toxicology, environmental issues, ecological trends and eco-legislation. Anne designs and develops tailor-made chemical management and sustainability solutions across the entire supply chain including detox and zero discharge. She is frequently requested to present at high-profile events, and has authored several articles for publication. Anne was inducted into UL’s William Henry Merrill Society in recognition of her significant and sustained contribution to the advancement of safety science and safety engineering. Memberships include Swiss Association for Standardization (SNV), European Committee for Standardization (CEN), International Organization for Standardization (ISO), Technical Committee of Ginetex Switzerland, and American Apparel and Footwear Association (AAFA).


Bill Hoffman, Ph.D, UL Corporate Fellow
Research Scientist, Advisory Services – UL Environment

Bill manages the UL Environment science team working on the technical basis for the development of standards and guidance for standards including the green chemistry and sustainable chemistry aspects of product environmental performance, validation of claims, and product certification. His work provides a strong technical basis for product environmental performance by using a deep scientific analysis of the environmental impact of a product while also assuring companies producing the product are using environmentally progressive manufacturing methods. Bill is member of the William Henry Merrill Society, a UL Corporate Fellow.

Before joining UL Environment, Bill was responsible for strategy and deployment of sustainability services and worked on the development of several specifications including standards governing the chemical content of products and was heavily involved in external standardization efforts for environmental issues in electronics.

Bill holds a BS in Chemistry from Southern Illinois University, and a Ph.D. in Physical Chemistry from Illinois Institute of Technology.


Elliott Horner, Ph.D
Lead Scientist – UL Environment

Dr. Horner directs the mold laboratory for UL Environment. He has conducted research on: mold development on building materials, simulated water losses, microbial volatile organic compounds (MVOCs), fungal allergens, aerobiology monitoring, ultrafine particles, mold growth on latex paint and other materials, soil and root fungi in trees, field surveys of residential indoor air and microbial contamination in buildings. He has provided expert testimony for both plaintiff and defense. He developed and taught US Environmental Protection Agency sponsored training programs on sampling bioaerosols and indoor mold and has written more than 37 peer reviewed research papers, 10 book chapters, 8 reviews, and numerous other publications and conference proceedings.


John Shan, Ph.D
Environmental Program Manager – UL Environment

John Shan is a chemist and environmental expert with UL Environment.

After ten years of research work in the UK, he decided to return to China to join Fudan University as a researcher in early of 2012. His current focus is on VOC emissions, related regulation and environmental issues consulting. As an expert and trainer, he helped China Southern Locomotive to establish environmental test standards and gave more than 15 trainings to customers every year.

He received an M.D in environmental chemistry from the University of Wales in the United Kingdom and carried on with a doctorate degree in organic chemistry.


Xue Wang, Ph.D
Project Coordinator, Advisory Services – UL Environment

Dr. Xue Wang has more than four years of experience in environmental sustainability science. As a Project Coordinator at UL Environment, her main responsibilities include developing innovative claims and environmental claim validation procedures, and conducting scientific research to support consulting and advisory projects.

Her dissertation research focused on the quantification of the environmental risks and opportunities for end-of-life electronic products. Her areas of expertise include life-cycle assessment, sustainability metrics, risk assessment, nanoparticle exposure assessment, multi-criteria decision-making analysis, energy efficiency, material flow analysis, and economic analysis.

Xue earned her Ph.D degree in Sustainability from Rochester Institute of Technology (RIT) in June 2014. She also holds a Master degree in Applied Statistics from RIT.


Jianming Yang, Ph.D
Project Manager, Advisory Services – UL Environment

Dr. Jianming Yang is based in China and has worked as a research scientist to develop technologies to mitigate environmental impacts and has extensive environmental management experience while working in various industries such as manufacturing, pharmaceutical and for Walt Disney in Shanghai.

Jianming has a strong background in the management and control of environmental risks for multi-national companies, project management, and implementation of energy efficient technologies and emission controls in industrial applications. As a scientist, he has researched and analyzed air pollution controls, waste water treatment technologies, waste solid disposal, and noise reduction.

Jianming graduated with a Ph.D in Environmental Chemistry from the University of Haute – Alsace (FRANCE), a Master of Engineering degree in Environment and Safety (FRANCE) and a BSc in Environmental Engineering in China.


UL Information & Insights, The WERCS



Michael Holcomb, Ph.D
Senior Regulatory Specialist – UL Information & Insights, The WERCS

Dr. Michael L. Holcomb brings more than 25 years of experience managing toxicology and public health programs to his role at The WERCS. He is responsible for developing product risk assessment automation and providing regulatory toxicology guidance to clients. His technical expertise lies in assessing the safety of consumer products, toxicology study planning, health risk assessments, safety data sheets, green chemistry, worldwide chemical regulations, new product introduction requirements, and chemical manufacturing safety.

As a published author of seven books on international product and SDS regulations, his publications are distributed worldwide and used by major international companies and governmental authorities as trusted chemical references for the distribution of safe chemicals and chemical products.

Michael graduated with a BS in Agriculture from Sam Houston State University, a MS in Chemistry from Sam Houston State University and went on to earn a Ph.D in Toxicology from Texas A&M University.


Paula Laux
Senior Regulatory Specialist – UL Information & Insights, The WERCS

Paula Laux brings technical expertise from a 30-year career in toxicology, hazard communication, and product stewardship. Her varied technical and managerial expertise include Laboratory Toxicologist, serving as Study Director for GLP performed mutagenicity tests, and Hazard Communication Analyst authoring global SDS and labels. She is well-versed in North American hazard communication regulations and understands labeling requirements including CCCR in Canada and CPSC (FSHA), FIFRA, and state Right-To-Know regulations in the U.S. Her previous experience exposed her to developing and establishing regulations and an understanding of cradle to grave. She continues to expand her regulatory knowledge, permitting, shaping, and optimization of Wercs software.

She has a B.S. degree in Medical Technology from Indiana University of Pennsylvania and is certified Medical Technologist by the American Society of Clinical Pathologist.


Christine Lepisto
Senior Regulatory Specialist – UL Information & Insights, The WERCS

Christine Lepisto holds 30 years of experience in managing sustainability, best practices in health/safety/environmental policy, and product stewardship. Christine advises on global chemical control regulations, with expertise on European and Asian-Pacific regions and has a broad knowledge and network of resources.

Previously, she held executive-level positions managing HES and product stewardship for global companies. Her industrial accomplishments include implementation of the ISO14001 Management System, the International Safety Rating System (ISRS), permitting and start-up of a RCRA Part B thermal treatment facility, and obtaining and using research grants to develop innovative waste control techniques.

Christine holds honors degrees in Chemistry and Mathematics from St. Olaf College and graduate studies in biochemistry at the University of Minnesota.


Joan McGuffey
Senior Regulatory Specialist – UL Information & Insights, The WERCS

Joan McGuffey supports suppliers and retailers with their volatile organic compounds obligations through WERCSmart and agency reporting.

Joan has 20 years of product compliance experience in the chemical and retail industries. Her broad business acumen combined with regulatory experience in Hazard Communications and Chemical Management in several regions of the world provides practical support to business opportunities. She also has more than 30 years of experience in the pharmaceutical and chemical industries, which include process engineering, project engineering, cost accounting, new product introduction, first line supervision and management, and regulatory compliance.

Joan has a BS Chemical Engineer degree with an MBA in Marketing.


UL Information & Insights, GoodGuide



Bill Pease, Ph.D
Chief Scientist – UL Information & Insights, GoodGuide

Bill is responsible for the scientific methods and informatics services used by manufacturers and retailers to rate materials and products on their health, environmental, and social impacts. Bill was Chief Scientist at GoodGuide, the web’s leading resource for consumers that want to make purchasing decisions that reflect their preferences and values. Prior to joining GoodGuide, Bill served as Chief Scientist at Convio and Chief Technology Officer at GetActive Software, the leading online providers of constituency management services to U.S. non-profit organizations. He has also worked for CalEPA, the California Department of Health Services, and the Massachusetts Department of Environmental Management.

Bill holds a BA from Yale University, an MS in Energy and Resources and a Ph.D in Environmental Health Sciences from UC Berkeley. He was also a Rhodes Scholar at Oxford University, England.


Pedro Viera, Ph.D
Research Manager – UL Information & Insights, GoodGuide

Pedro Vieira co-founded GoodGuide and brings in more than 10 years of experience in environmental impact assessment, environmental management, and policy. He is responsible for GoodGuide’s proprietary rating algorithm, its team of researchers and overseeing the assessment of products and companies. Working closely with product development and engineering teams, he integrates cutting edge science with innovative information visualization methods to transform how consumers see and interact with products and companies.

With past roles in academia, management consulting, and tech startups, Pedro has worked in a wide range of sectors including energy, construction, banking, internet and consumer goods.

Pedro holds an M.Sc. in Management of Technology and a Ph.D in Civil and Environmental Engineering from the University of California, Berkeley.


Toxicology Experts



Tom Luechtefeld, Ph.D Candidate

Tom Luechtefeld co-founded Toxtrack. He brings together an academic and entrepreneurial background in computer science and toxicology. He is responsible for development of computational toxicology algorithms at Toxtrack. Tom integrates machine learning approaches with traditional chemical informatics to make predictive models for chemical hazards.
With an academic training in molecular toxicology, machine learning and applied mathematics, Tom builds applications leveraging big data to identify chemical risks.

Tom is a PhD candidate in molecular toxicology at Johns Hopkins and has formal training in machine learning and computer science at Johns Hopkins.


Craig Rowlands, Ph.D, D.A.B.T. – Senior Toxicologist with UL Business Development and Innovation

Dr. Craig Rowlands is Senior Toxicologist with UL Business Development and Innovation where he provides leadership in the development of new business models and capabilities for safety assessments of consumer products. Craig is an expert in navigating regulatory compliance for new substances and products through delivery of the appropriate safety data and risk assessments.

With over two decades of experience, he has published over 80 articles and book chapters and edited several reports in toxicology and risk assessment. His research and policy advocacy efforts are in the areas of predictive toxicology with a focus on sustainability and the development of non-animal alternative testing strategies towards reducing environmental, health and safety risks of chemicals. He was a recipient of the 2012 Michigan Green Chemistry Governor’s Award, is an adjunct Professor of Toxicology at Michigan State University, Diplomate of the American Board of Toxicology, and a Fellow of the American College of Nutrition.