Ms. Wald-Hopkins has 20 years of experience performing literature research and review, data management and analysis, technical report preparation and educational material development and presentation in the field of environmental health. She has specialized in ecological and human health risk assessment including the utilization of laboratory and field based toxicological results to address complex ecological and human health concerns for clients in the federal, state and tribal government, as well as for clients in the private sector. She developed and implemented a methodology for deriving ecological toxicity reference values from scientific literature for use in screening level ecological risk assessments at the Los Alamos National Laboratory. She supported the preparation of numerous ecological and human health assessments and interacted with public health and community members to address toxicological impacts of climate change and global warming on humans and the environment and the toxicological impacts of landfill waste on rural communities. She has expertise in developing and implementing methodologies, user- friendly decision tools, and educational programs to help clients ensure a safe and more sustainable environment including the development and implementation of training sessions on environmental health issues relevant to Native Americans and presentations at professional societies including the Society for Environmental Toxicology and Chemistry and Society for Risk Analysis.