Services

Maximum Residue Limits

CSI has staff experienced in supporting the setting and defending of new and existing Maximum Residue Limits (MRL), also known as pesticide residue tolerances, and/or crop residue levels. We can assist in recommending new tolerance levels for commodities as well as defense of existing tolerances. CSI’s team members are skilled problem solvers in international regulatory affairs, regulatory due diligence, compliance, toxicology and ecotoxicology, environmental fate, and risk assessment for agricultural chemicals, biopesticides, and consumer products.  

Our experience includes various aspects of preparing, submitting and defending national and international registration dossiers, applications to set new import tolerances, and response to reviews of existing international MRLs by various international regulatory bodies and organizations, including EPA, PMRA, EFSA, ECHA, and JMPR/CCPR. 

CSI can be your partner, providing strategic guidance in this process, as well as assistance in developing and coordinating the required documentation to facilitate the evaluation of new MRLs and support in existing MRLs.

Experienced Support For:

  • Global Regulatory Strategy
  • Study Design, Placement & Monitoring
  • Dossier Preparation & Submission
  • Evaluating Field Residue Data & Residue Metabolism Studies
  • Dietary Modeling & Risk Assessment
  • Testing Strategies, Read-Across Approach, & Human Exposure Modelling using Standard & Bespoke Models
  • Pharmacokinetics, Metabolism & Fate
  • Economic Impact Analysis
  • Global Registration Capabilities in North & Latin America, Asia, Australia, Europe & Africa

Global Support for Maximum Residue Limits (MRL)

Study Design, Placement, and Monitoring 

  • Placing and monitoring field residue trials.

Economic Impact Analysis 

  • There are economic consequences of missing and revoked tolerances/MRLs for growers, importers, and exporters. Additionally, we can prepare expert statements related to economic consequences.

Industry Note:

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Maximum Residue Limits Experts

Maximum Residue Limits

Leah Duzy

Principal Consultant

Alabama

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Leah Duzy
CEO – North America / Principal Consultant

Expertise: Agricultural Economics, Endangered Species, Production Agriculture

Leah’s primary work focuses on offering mitigation strategies and technical support for pesticides with the goal of regulatory predictability and environmental stewardship. Building from her background in production agriculture, working lands conservation, and economics, Leah communicates regulatory policy and decisions to diverse audiences including pesticide registrants, agricultural commodity groups, state regulators, non-agricultural users of pesticides, and a variety of other stakeholders. Leah applies economic principles to risk and conservation decision-making to support agrochemical product development, assessment, and defense including pesticide benefit assessments and endangered species assessments. She also provides applied economics research support through collaboration on federal grants and other projects.

Prior to CSI, Leah worked for the USDA Natural Resource Conservation Service and the USDA Agricultural Research Service as an agricultural economist for 15 years. She has worked in both the Federal conservation program and agricultural research arenas conducting applied economic research on conservation production systems, cover crops, and herbicide-resistant weed management, and preparing cost-benefit analyses for Federal conservation programs as part of the rulemaking process. 

EDUCATION
Ph.D., Agricultural Economics, Auburn University.
M.S., Agricultural Economics, Purdue University.
B.A., Economics, The University of the South.

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