Spring Courses Open for Enrollment15% discount on select winter & spring courses for all subscribers.
Coronavirus (COVID-19) Update
Our courses are taught remotely through spring 2021. Please check our coronavirus update page for our latest announcements.
David J Keenan
DAVID J. KEENAN, B.S., is an environmental health and safety consultant with Performance Safety Associates. He has 34 years of experience in environmental health and safety. He has taught at UCSC Extension since 2001.