Society for Chemical Hazard Communication

 Professional Development Training


California Proposition 65 Labeling Workshop

Brochure — available September 22, 2024

Course Description

The goal of this workshop is to develop an understanding of California’s Proposition 65 regulations, the required warnings, and the risk-based determinations for exemption from these requirements.  The focus will be on the Prop 65 list of chemicals, the exemption processes, and the expectations for a clear and reasonable warning.  The workshop will include informal lectures with ample time for working on examples of the risk-based decision-making process and discussion of the role that Proposition 65 plays in both US and global HazCom.

This is an advanced course.  While there are no formal prerequisites for this course, it is recommended that participants have a working knowledge of SDS and labels and that they have either taken the SCHC courses Toxicology for Hazard Communication and Hazard Determination and Risk Assessments or that they are comfortable with the basic principles of toxicology and risk assessment.

Intended Audience

Hazard communication professionals looking to improve their California Proposition 65 labeling skills.

Course Fee:        $290.00 Members        $430.00 Non-members

Reduced rates are available for students and retirees.  Interested people may contact SCHC for more information.

Course Director / Instructor 


Robert Skoglund, Ph.D., DABT, CIH, CPPS

Dr. Skoglund is the Director of Product Safety and Regulatory Affairs at Covestro LLC. His responsibilities include safety, compliance, sustainability, and stewardship for North America - including hazard communication and product stewardship.


Course Instructor


Robert Roy, Ph.D., DABT, Fellow ATS

Dr. Roy is the Managing Principal Toxicologist at Northland Toxicology Consultants, LLC where his focus is directed towards, but not limited to, developing human health risk assessments and various health-based values including OELs, ADIs, PDEs, DNELS, NSRLs, etc., for the industrial chemical, consumer product, pharmaceutical and medical device sectors.  Rob retired from the 3M EHS/Product Stewardship Group in 2023 as a Corporate Staff Scientist.


Course Topics and Schedule

(Subject to Change)

Sunday, September 22, 2024

12:30 – 1:00


1:00 – 2:10


Overview of Prop 65

The Prop 65 List of Chemicals

2:10 – 2:25


2:25 – 3:35

Exceptions to Warning Requirements

  • Safe Harbors
  • Risk Assessments
  • Safe Use Determinations

3:35 – 3:50


3:50 – 5:00

Clear and Reasonable Warnings

Workshop Activities


Refer to brochure for additional information.