Welcome to the State of California 

Lead in the Workplace –  The New Science

A one-day scientific symposium moderated by John Howard, MD, Director of NIOSH

The CDPH Occupational Lead Poisoning Prevention Program (OLPPP) has reviewed available scientific information and made health-based recommendations to Cal/OSHA for revising its General Industry Lead Standard and Lead in Construction Standard. These standards aim to protect workers exposed to lead on the job. This symposium, held on November 13, 2013, explored the scientific basis for the CDPH recommendations.

Scientific experts provided detailed presentations on the current literature on health effects of low-level lead exposure and the newly released Cal EPA report on modeling of the air lead/blood lead relationship. A CDPH representative presented the basis for the CDPH’s recent Permissible Exposure Limit (PEL) recommendation to Cal OSHA. In addition, a panel of experts from related disciplines responded to the presentations and participated in a question-and-answer session with symposium attendees.

Workplace Lead Symposium Agenda (PDF)Opens new browser window.

Workplace Lead Symposium - all videos


Individual speaker presentations

Photo of Dr. Michael Kosnett

Health Hazards of Low-level Lead Exposure to Adults - video stream

... | PowerPoint presentation (PDF) Opens new browser window.

Michael J. Kosnett, MD, MPH, University of Colorado, Dept. of Medicine, Dept. of Environmental and Occupational Health


Photo of Dr. Kathleen Vork

Pharmacokinetic Modeling of Air Lead and Blood Level Relationship - video stream

... | PowerPoint presentation (PDF)Opens new browser window.

Kathleen Vork, PhD, MPH, Office of Environmental Health Hazard Assessment, California Environmental Protection Agency

Estimating Workplace Air and Worker Blood Lead Concentration using an Updated Physiologically-based Pharmacokinetic (PBPK) Model (PDF) – report produced by the Office of Environmental Health Hazard Assessment (OEHHA), California Environmental Protection Agency (Cal/EPA) characterizing the relationship between air lead levels and blood lead levels. (October 2013)

Health professional summary (PDF) | General public summary (PDF)


Photo of Dr. Barbara Materna

CDPH Health-based Permissible Exposure Limit Recommendation for Lead - video stream

... | PowerPoint presentation (PDF)Opens new browser window.

Barbara Materna, PhD, CIH, Chief, Occupational Health Branch, California Department of Public Health


Discussant Panel Responses - video stream

Photo of Dr. John Howard

Philip J. Landrigan, MD, MSc, Mount Sinai School of Medicine

Dale B. Hattis, PhD, Clark University - Presentation (PDF)Opens new browser window.

Ken D. Rosenman, MD, Michigan State University - Presentation (PDF)Opens new browser window.

Leslie Israel, DO, MPH, University of California at Irvine - Presentation (PDF) Opens new browser window.


Question and Answer Session, Closing Remarks - video stream

Photo of Scientific Experts Discussion Panel

Closing remarks by Dr. John Howard, MD, MPH, JD, Director of the National Institute of Occupational Safety and Health (NIOSH)


Recommendations for improving the Cal/OSHA Lead Standards main page

Occupational Lead Poisoning Prevention Program home page

Occupational Health Branch home page


Last modified on: 4/15/2014 11:01 AM