Lewis Brown

Research Management and Regulatory Executive Environmental Toxicologist with over 28 years of distinguished experience in the government, corporate, and consulting sectors. Over 25 years of experience with Federal, state, local, and international authorities in regulatory and environmental management. Demonstrated expertise in environmental risk assessment, global product compliance, and team leadership with extensive experience in toxicology, ecotoxicology, and environmental fate impacts on a global scale.

Remote Contract Associate Environmental Toxicologist - SC JOHNSON AND SONS - Remote

(2025-09)

• Reviews Toxicological and ecotoxicological formula reviews for global EH&S for a variety of consumer portfolios.
• Reviews Pest Control, Air Care and Home Cleaners product safety profiles as per EPA, ECHA & international safety standards and requirements.
• Ensures the technical integrity of Pure Substance Reviews (PSRs) in accordance with TSCA, COFEPRIS, PRMA, SAG-MINSAL, ICA, SENASA, & ECHA-REACH.
• Reviews and edits Environmental and Ecological Risk Assessments done by RIFM, SCCS, ICCS, & FEMA.
• Acts as a technical mentor to internal stakeholders who want to understand the rules of the field and apply them in practice.

Former Managing Environmental Toxicologist/ Ecotoxicology Consultant - ADAMS, ALIX, & DAVIDSON SCIENCE CONSULTANTS - DC METRO - DC METRO

(2009-08 - 2025-07)

Also served as Remote Independent Pesticide Toxicology Consultant.

• Served as a Senior knowledgeable advisor on environmental toxicology, product compliance, and global regulatory strategies to corporate clients (REACH, FDA, EPA, OECD, & PRMA).
• Directed and executed a range of environmental consulting projects from scope and proposal to completion and delivery and developed excellent customer relationships.
• Developed, planned, and commissioned external toxicology and environmental fate studies.
• Served as study monitor with CROs when coordinating study placement, data QC and results interpretation, strictly following GLP and OECD guidelines such as OECD 106, 301, 201, 211, and 210.
• Supported application of endocrine assays by generating and carrying out weight-of-evidence endocrine assessments for chemical and pharmaceutical registration dossiers.
• Served as a knowledgeable advisor to clients on Chemicals that are known EDCs in the Pharmacological, Toxicological, and Ecotoxicological arenas of Chemical application and Exposure.
• Led several high-profile Human Health and Ecological risk assessments and reached regulatory closures through impactful exposure modelling, label claims creation, and 100% GHS SDS.
• Authored, edited, and evaluated comprehensive Food, Nutritional, Ecological, and Toxicological Risk Assessments according to FDA and EPA policies and the US EPA and CDC/ATSDR (Sections 402, 408, and 409).
• Led and mentored multi-disciplinary teams of consultants and scientists while ensuring projects were delivered on time, at the proper quality and with technical accuracy to the client's deadlines.
• Mentored junior employees on the finer aspects of Ecological & Environmental Risk Assessments and Ecological & Environmental Impact Statements.

Environmental Biologist/Toxicologist (GS-13) – Environmental Fate & Effects Division - US EPA – OFFICE OF PESTICIDE PROGRAMS (OPP) - Washington, DC

(1997-06 - 2019-08)

• Presented and approved quality regulatory docs, ecological risk assessment, and scientific justifications for national registration reviews.
• Created national policy directives for the management of over 150 active ingredients to protect public health and the environment; analyzed intricate toxicological data for critical omissions in over 40 Registration Review Documents.
• Generated technical, defensible reactions to complex regulatory inquiries from registrants and stakeholders; played a substantial role in risk management and stewardship plans.
• Developed the Federally Listed and Endangered Species Database (ESA Section 7), contributing to the federal consultation timescales for other federal & state agencies.
• Provided a high-level briefing to executive leadership and scientific advisory boards, converting complex toxicology and ecotoxicology data to the best regulatory decisions.
• Performed Environmental and Ecological Risk Assessments in respect of new and existing pesticide applications for FQPA and FIFRA-designated crop and livestock agriculture approved agricultural crops for food.
• Calculated foliar dissipation half-life values of various pesticides to produce pesticide applications for people or domesticated animals (e.g. FQPA, FIFRA).

Adjunct Professor, Environmental Science and Chemistry - NORTHERN VIRGINIA COMMUNITY COLLEGE - Alexandria/Woodbridge, VA

(1999 - 2002)

Teaching of environmental studies and toxicological concepts to adult students; case studies in real regulation compliance and safety lab practice; implemented real-world regulatory and safety protocol implementation in the curriculum.

MS/MSPH - Environmental Toxicology & Chemistry - Southern University and A&M College

Bachelor of Science - Biology and Chemistry - Dillard University