OSHA - http://www.osha.gov/
EPA - http://www.epa.gov/
Mass DEP asbestos page - http://www.mass.gov/dep/air/asbhom01.htm
Indoor Air Quality Association (IAQA) – http://www.iaqa.org/
American Council for Accredited Certification - http://www.acac.org/
American Industrial Hygiene Association (AIHA) - http://www.aiha.org/Pages/default.aspx
New England Chapter AIHA - http://www.neaiha.org/
Massachusetts DLS Asbestos Program - http://www.mass.gov/lwd/labor-standards/asbestos-program/