Asbestos is still present in many structures and is still used in some industrial processes and commercially available products. Please see the links below for additional information on how contractors and homeowners should take care of dealing with these hazardous materials.
https://www.dir.ca.gov/Title8/sb4a4.html
https://www.dir.ca.gov/title8/1529.html
https://www.dir.ca.gov/dosh/acru/acruinfo.htm
https://www.cslb.ca.gov/Resources/GuidesAndPublications/AsbestosGuideForConsumers.pdf