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RETRA’s scientists have deep expertise in Proposition 65, offering exposure assessments, risk evaluations, and expert support to determine labeling obligations, support naturally occurring exemptions, and defend against or pursue enforcement actions

Consulting Expertise

» Exposure Assessments for Food, Personal Care, and Industrial Products

» Development and Evaluation of MADLs and NSRLs

» Naturally Occurring Chemical Determinations

» Safe Harbor Level Comparison and Interpretation

» Chemical-Specific Toxicological Reviews

» Dose Reconstruction

» Labeling Obligation Determinations

» Product Formulation and Use Pattern Evaluation

» Expert Support in Mediation, Negotiation, and Litigation

» Interpretation of OEHHA Guidance and Methodology

» Exemption Justifications for Minimal Exposure or No Significant Risk

» Technical Documentation for Regulatory and Legal Submissions

Proposition 65: The Safe Drinking Water and Toxic Enforcement Act of 1986, known as Proposition 65, aims to protect California residents from adverse cancer, reproductive, and developmental outcomes related to environmental exposures, including workplace environments, consumer products, and food. RETRA scientists have worked with clients to evaluate products per regulations and develop exposure and risk evaluation methods to determine product warning label status under the law. This work has included the review and development of cancer, developmental, and reproductive warning levels. Evaluated products include various food items (e.g., dried seaweed, dried fish, soup base, honey, olive oil), pharmaceuticals, kitchenware, agricultural equipment, marine-related products, sunscreen, personal care appliances, cosmetics, hair care products, supplements, tools, clothing, industrial coatings, and medical devices. We have also reviewed and developed warning exemption levels for chemicals listed under the statute that do not have Safe Harbor Levels.

Selected Project Experience