President / January, 2000 — December

Drinking Water Quality Health and Safety. Legionella and microbial regrowth in distribution and plumbing; Water Reuse; Bromate Chemistry and Toxicology; US Regulations and International Guidelines; Desalination Water Quality and Health; Small Water Systems Technology and Policy; Water Delivery Concepts: Bottled Water Point-of-Use and Point-of-Entry Technology; Product Development Support; WHO Guidelines for Drinking-water Quality Coronavirus monitoring and tracking sewage assessments.

Adjunct Professor / January, 2013 — December

Adjunct Professor in Departments of Chemistry and Biochemistry and of Environmental Sciences. Prestige Appointment.

Vice President Environmental Health Sciences / January, 1998 — December, 2000

Manager of Washington D.C. office and WHONSF Collaborating Centre for Drinking Water Safety and Treatment water health science and technology food standards public health. Liaisons: USEPA FDA USAID PAHO WHO.

Senior Regulatory Executive / January, 1996 — December, 1998

Manager of Washington D.C. office. IPA from USEPA.

Director Chemical Screening and Risk Assessment Division / January, 1992 — December, 1996

Managed development of human and ecological risk assessments for new and existing industrial chemicals under the Toxic Substances Control Act.

Director Health and Environmental Review Division / January, 1990 — December, 1992

Managed development of human and ecological hazard assessments for industrial chemicals under the Toxic Substances Control Act.

Director Criteria and Standards Division / January, 1976 — December, 1990

Initiated and supervised development of National Drinking Water Regulations and Guidelines for organic and inorganic chemicals disinfection by-products microbials radionuclides corrosion and surface water treatment under the Safe Drinking Water Act. Developed the EPA drinking water regulatory policy for carcinogens. Initiated the Drinking Water Health Advisory Program for states and public water systems providing health guidance for drinking water contamination by unregulated contaminants. Supervised 30 chemists toxicologists microbiologists and engineers and managed technical regulation contracts and research planning and budget.

Senior Regulatory Analyst / January, 1973 — December, 1975

Senior Regulatory Analyst for Toxics Pesticides Clean Water Act and Safe Drinking Water Act.

Manager of R & D / January, 1970 — December, 1972

A specialty and fine chemicals producer. Developed new synthetic processes and scale up for pheromone chemicals and other commercial products.

Postdoctoral Researcher (Fellowship) / January, 1969 — December, 1969

Postdoctoral Research in Heterocyclic Chemistry

Visiting Professor of Environmental Engineering / January, 2005 — December, 2005

Visiting Professor of Environmental Engineering