toXcel is a medium-sized consulting firm with offices in Gainesville, Virginia and affiliate locations in the United Kingdom and Canada. It provides a wide range of scientific, technical, and regulatory consulting services including federal, state, and regional registrations in North America, Europe, and other international markets. One of toXcel's main areas of expertise involves product registrations under the Federal Insecticide, Fungicide, and Rodenticide Act (FIFRA).

toXcel places an emphasis on regulatory strategy and maintains an outstanding reputation with regulatory agencies. Many of toXcel's consultants previously held posts with the United States Environmental Protection Agency (EPA). President Alan Katz is a board-certified toxicologist who served as a Senior Toxicologist with EPA's Office of Pesticide Programs (OPP); Vice President Connie Welch was previously a branch chief within OPP's Antimicrobial Division; Melba Morrow held senior leadership positions in both the Health Effects and Antimicrobials Divisions; and Earl Goad was formerly a chemist within the Antimicrobial Division.

toXcel is well suited to help clients gain approval for the sale and marketing of antimicrobial and conventional pesticide products. For more than twenty years, toXcel has assisted clients with laboratory selection, study design, research management, and filing of GLP chemistry, residue, efficacy, environmental and toxicological studies.


Lead Antimicrobial Consultants

Connie Welch: An expert in environmental laws and regulations, Connie’s background includes a 17-year distinguished career within the US EPA Office of Pesticide Programs (OPP), where she held prominent leadership positions dealing with conventional pesticides, antimicrobial pesticides, and inert ingredients. In her role as Chief of Regulatory Management Branch II in the Antimicrobials Division of OPP, Connie developed a strong interactive working relationship with other offices within the EPA (i.e., the Office of Pollution Prevention and Toxics, the Office of Drinking Water, and the Office of Solid Waste) and other federal agencies (the Food and Drug Administration, the Consumer Products Safety Commission, and the USDA).  Because of Connie’s extensive EPA career and over 20 years of experience as a leading regulatory consultant to industry, she is ideally suited to providing clients with a wealth of pesticide knowledge and expertise.

Melba Morrow: Melba holds a Doctorate of Veterinary Medicine degree and has over 35 years of government regulatory experience, having worked at the Food and Drug Administration’s Center for Veterinary Medicine and the Environmental Protection Agency’s Office of Pesticide Programs. At EPA, she held several positions including team leader and senior scientist in the Health Effects Division and special assistant positions at the branch and division levels in the Antimicrobials Division. During her government career, she developed testing guidelines for domestic animal safety, wrote position papers and conducted numerous toxicity reviews for food use and antimicrobial chemicals.  She has served on hazard and risk assessment committees within the Office of Pesticide Programs and has worked closely  with FDA on issues involving dual regulatory jurisdiction.   Melba also served as an expert panelist with the World Health Organization’s International Programme on Chemical Safety. During her tenure at the EPA, she received bronze medals for her work on endocrine disruption, anthrax remediation and programmatic issues.   

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