Jason Johnston

Experience

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  Karch & Associates, Inc.

  Mar 1989 - Apr 1993

  Staff Scientist

  Perform scientific analyses as part of litigation support projects involving environmental and occupational exposures to hazardous chemicals. Conduct and review exposure and risk assessments for Superfund and RCRA sites. Analyze environmental risk management policies and proposed federal regulations in an advocacy context.

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  BDM International, Inc.

  Apr 1993 - Oct 1993

  Associate Staff Member

  Provide technical and policy analysis support to programs in the Department of Energy Office of Environmental Restoration and Waste Management.

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  Regulatory Impact Analysis Project, Inc.

  Oct 1993 - Sept 1994

  Senior Research Associate

  Direct and conduct research for government-sponsored book concerning science policy, risk assessment and uncertainty in environmental regulation. Author several sections of the project book and edit the entire book.

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  EA Engineering, Science & Technology

  Mar 1995 - May 1996

  Environmental Scientist

  Conduct risk assessments for hazardous waste sites under CERCLA, RCRA, and state authority. Manage risk assessment projects with budget responsibility. Participat in proposal preparation and presentations. Supervise and maintain bibliographic databases for literature-intensive projects.

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  Karch & Associates, Inc.

  May 1996 - Jun 1999

  Senior Staff

  Manage projects, prepare project proposals, work schedules, and budgets. Perform and coordinate scientific analyses in litigation support projects involving environmental, occupational, and consumer exposures to hazardous chemicals. Conduct exposure and risk assessments for consumer products and environmental exposures. Perform scientific analyses involving chemical storage, handling, and recycling processes, occupational health testing, and exposure modeling.

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  Jellinek, Schwartz & Connolly, Inc.

  Jun 1999 - Nov 2000

  Senior Scientist

  Perform application and post-application assessments of occupational and residential exposures in support of EPA and EU pesticide registration activities. Coordinate and monitor contracted occupational exposure studies with performing laboratory on behalf of clients. Critique EPA exposure assessments on pesticides in an advocacy context during re-registration.

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  Exponent

  Nov 2000 - Oct 2013

  Managing Scientist

  Conduct human health risk assessments, including occupational, residential and dietary exposures, in support of pesticide registration and re-registration activities. Coordinate and develop strategies to achieve client goals with toxicologists, environmental fate specialists, and regulatory affairs colleagues. Prepare submission materials for registration packages, and prepare comment documents in response to draft risk assessments and proposed regulatory decisions from regulatory agencies (EPA and PMRA). Represent clients in meetings with EPA regulators. Provide support for EU REACH assessments and conduct Proposition 65 assessments. Show less

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  Cheminova

  Oct 2013 - Sept 2015

  Senior Scientist

  Oversee all aspects of human health exposure and risk assessment as they pertain to demonstrating safe use of pesticide products, including occupational, residential and dietary exposures. Monitor and coordinate studies conducted by contract research organizations to address residues on treated crops and environmental fate of pesticides. Coordinate and develop strategies with toxicologists, environmental fate specialists, and regulatory affairs colleagues. Prepare submission materials for registration packages (including tolerance petitions), and prepare comment documents in response to draft risk assessments and proposed regulatory decisions from regulatory agencies. Represent firm in meetings with EPA and PMRA regulators. Represent firm on industry task forces devoted to developing occupational exposure data for pesticide handlers and to developing a next generation model to estimate cumulative and aggregate exposures to pesticides. Show less

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  FMC Corporation

  Oct 2015 - Jan 2016

  Senior Scientist

  Oversee all aspects of human health exposure and risk assessment as they pertain to demonstrating safe use of pesticide products, including occupational, residential and dietary exposures. Monitor and coordinate studies conducted by contract research organizations to address residues on treated crops and environmental fate of pesticides. Coordinate and develop strategies with toxicologists, environmental fate specialists, and regulatory affairs colleagues. Prepare submission materials for registration packages (including tolerance petitions), and prepare comment documents in response to draft risk assessments and proposed regulatory decisions from regulatory agencies. Represent firm in meetings with EPA and PMRA regulators. Represent firm on industry task forces devoted to developing occupational exposure data for pesticide handlers and to developing a next generation model to estimate cumulative and aggregate exposures to pesticides. Note: FMC acquired Cheminova in April 2015, and Cheminova employees were transitioned into FMC as of October 2015. Show less

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  The Acta Group / Bergeson & Campbell

  Feb 2016 - Apr 2021

  Senior Scientist

  Conduct human health exposure and risk assessments in support of registration and re-registration activities for pesticides and other chemicals before the EPA and other regulatory agencies. Represent clients in meetings with EPA and PMRA regulators. Conduct risk assessments in support of Proposition 65 determinations. Assist registrant Task Forces in generating, collecting, coordinating, and evaluating data to meet regulatory requirements and demonstrate safe use in support of registration and registration review activities. Coordinate and develop strategies with toxicologists, environmental fate specialists, and regulatory affairs counterparts. Prepare submission materials for registration packages, and prepare comment documents in response to draft risk assessments and proposed regulatory decisions from regulatory agencies. Show less

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  Bayer CropScience

  Apr 2021 - Mar 2023

  Occupational and Residential Exposure Expert

  Principal Research Scientist on the Occupational and Residential (Non-Dietary) Exposure Team in the Human Safety Function of Regulatory Science at Bayer CropScience. Conduct occupational and residential exposure assessments for Bayer pesticide products. Perform all aspects of non-dietary human health risk assessment (conducting assessments, label review/development, writing waiver requests, data development, DFR study design and monitoring, developing submission strategies, etc.). Review and prepare comments on regulatory agency risk assessments. Conduct review of new EPA risk assessment policies and procedures to anticipate potential impacts on company product portfolio. Collaborate in cross-functional teams - within North America and globally - across scientific, regulatory, agronomic, and business areas to identify optimal strategies and approaches to achieve business objectives. Represent the company before the U.S. Environmental Protection Agency (EPA) and Canadian Pest Management Regulatory Authority (PMRA). Serve on registrant Task Forces and committees to develop exposure data and models, advocate for industry positions, and promote relationships with regulators. Show less

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  Syngenta

  Apr 2023 - now

  Senior Human Safety Risk Assessor

  Senior Human Safety Risk Assessor on the Human Safety Team within Product Safety at Syngenta Crop Protection. Conduct dietary, residential, and occupational human exposure assessments for Syngenta pesticide products, whether for new active ingredients, new uses of registered active ingredients, or registered active ingredients going through registration review/re-evaluation. Perform all aspects of human health risk assessment (conducting assessments, label review/development, writing waiver requests, data development, developing submission strategies, etc.). Review and prepare comments on regulatory agency risk assessments and label mitigation proposals. Conduct review of new EPA risk assessment policies and procedures to anticipate potential impacts on company product portfolio with the overarching of preserving the availability of safe, commercially viable, and efficacious products as tools for agriculture through the identification of safe use conditions for products per human health regulatory risk assessment policies and procedures. Coach and mentor early career risk assessors to promote practice of risk assessment across the firm. Serve on internal technical committees - within North America and globally - to develop sound technical positions, identify best practices and determine optimal strategies and approaches to achieve business objectives. Represent the company before the U.S. Environmental Protection Agency (EPA) and Canadian Pest Management Regulatory Authority (PMRA). Serve on registrant Task Forces and committees to develop exposure data and models, advocate for industry positions, and promote relationships with regulators. Show less