Stephanie Vivanco is a Scientist III in ToxStrategies’ Orange County, California, office. Ms. Vivanco is an environmental health scientist with experience in human health risk assessment, chemical and toxicological regulatory compliance (including California Proposition 65), and industrial hygiene (IH). Her field work in various IH and environmental investigations has included indoor air and soil vapor sampling, personal exposure sampling of workers, employee noise dosimetry, and mold/moisture sampling. She is proficient in the use of ESRI Geographic Information System (GIS) ArcView, as well as EPA’s ProUCL software, the Johnson and Ettinger model, and EPA’s Benchmark Dose software. Ms. Vivanco is bilingual in English and Spanish.