Joshua leads a team preparing a state of the science report for the U.S. Environmental Protection Agency (EPA) on the environmental footprint of food waste in the U.S. began his career performing chemical risk assessments and other technical analyses in support of the EPA regulation on hazardous waste, contaminated environmental media, and site remediation. For example, he prepared risk-based concentration thresholds for contaminated soils and estimated risk reductions and other benefits of proposed contaminated site cleanup regulations. Josh also has provided technical support to EPA regulations on air toxins, pesticides, and water quality. Related to this support, Josh has developed more than 40 computational tools, models, and databases to manage and analyze health and environmental data.
In addition, Josh has helped clients meet new challenges associated with food biotechnology, organic food production, bioethanol, imported seafood, and medical marijuana. In other work, Josh supported EPA, the U.S. Department of Agriculture , and the Department of Homeland Security by leading a multi-year chemical, microbial, and radiological exposure assessment to compare and rank livestock carcass management options in the event of a natural disaster, foreign animal disease outbreak, or chemical or radiological emergency. Josh also helped state regulators develop new contaminant limits for medical marijuana products, and he adapted food safety standards to the preparation of edible marijuana products.
Holder, C., Cleland, J., LeDuc, S., Andereck, Z., Hogan, C. & Martin, K. (2016). Generating a geospatial database of U.S. biofuel feedstock production for use in evaluating the environmental footprint of biofuels. Journal of the Air & Waste Management Association. April 2016; 66(4):356-65.
Suplee, M., Varghese, A. & Cleland J. (2007). Developing Nutrient Criteria for Streams:
An Evaluation of the Frequency Distribution Method. Journal of the American Water Resources Association, 43(2): 453-472.
Cook, R., Jones, B., & Cleland, J. (2004). A Cohort Based Approach for Characterizing Lifetime Inhalation Cancer Risk from Time-Varying Exposure to Air Toxics from Ambient Sources. Environmental Progress, 23(2): 120-125.
- USEPA (U.S. Environmental Protection Agency). (2017). Exposure Assessment of Livestock Carcass Management Options During Natural Disasters. USEPA, Office of Research and Development, National Homeland Security Research Center, Report No. EPA/600/R-17/027. February 2017.
- USEPA. (2018). Exposure Assessment of Livestock Carcass Management Options During a Foreign Animal Disease Outbreak. USEPA, Office of Research and Development, National Homeland Security Research Center, Report No. EPA/600/R-18/074. August 2018
- USEPA. (2019). Exposure Assessment of Livestock Carcass Management Options During a Radiological Emergency. USEPA, Office of Research and Development, National Homeland Security Research Center, Report No. EPA/600/R-18/243. May 2019.