Greg D. Simpson PhD is a scientist who has consulted globally on a variety of issues to many industries, including petroleum refining, oil field, aerospace, medical waste sterilization, ballast water, pharmaceutical, chemical, pulp and paper, electronics and semiconductor manufacturing, municipal treatment, environmental, food, and others. A scientist at a top-secret nuclear weapons facility in his early career, since 1980 Greg has been involved in the water treatment industry, serving in a variety of roles. He has consulted on a variety of projects, including odor control in a closed paper mill, stress corrosion cracking in a large petrochemical plant, CaCO3 deposition and gravel pack dissolution in an oil-field steam flood, anaerobic digester troubleshooting in a brewery, and a potable water corrosion study where the plant had violated their lead and copper limits.His research has resulted in 20 patents, both issued and pending. Additionally, he has authored and / or presented well over 100 technical papers. He has written three books about chlorine dioxide and was a major contributor to a fourth. Greg lives in the Houston area.
