Here are links to industry-related websites for your reference.
American Council for Accredited Certification (ACAC)
Indoor Air Quality Association (IAQA)
The Institute of Inspection, Cleaning, and Restoration (IICRC)
Division of Occupational Safety and Health (Cal/OSHA)
CA Department of Public Health (CDPH)
South Coast Air Quality Management District (SCAQMD)
Environmental Protection Agency (EPA)