Powered by GoogleTranslate


Mold - Photo Credit: iStock.com-147334711 | Copyright: Razvan
Mold Menu


State Standards

There are twenty-eight OSHA-approved State Plans, operating state-wide occupational safety and health programs. State Plans are required to have standards and enforcement programs that are at least as effective as OSHA's and may have different or more stringent requirements.

This section highlights OSHA standards, Federal Register notices (rules, proposed rules, and notices), letters of interpretation (official letters of interpretation of the standards), and national consensus standards related to mold.


General Industry (29 CFR 1910)

Shipyard Employment (29 CFR 1915)

Construction Industry (29 CFR 1926)

Federal Register Notices

  • Assigned Protection Factors. Final Rules 71:50121-50192, (August 24, 2006). Revises the existing Respiratory Protection Standard to add definitions and requirements for Assigned Protection Factors (APFs) and Maximum Use Concentrations (MUCs). The revisions also supersede the respirator selection provisions of existing substance-specific standards with these new APFs (except for the respirator selection provisions of the 1,3-Butadiene Standard).
  • Indoor Air Quality. Notice 66:64946, (December 17, 2001). OSHA withdrew its Indoor Air Quality proposal and terminated the rulemaking proceeding.
  • Respiratory Protection. Final Rules 63:1152-1300, (January 8, 1998). Justifies the use of respirators to prevent the inhalation of harmful airborne contaminants that are alive or were released from a living organism. Respirators protect against bacterial infections resulting from inhalation of bacteria and their products that cause a range of diseases.
  • Indoor Air Quality. Proposed Rules 59:15968-16039, (April 5, 1994). OSHA proposed to adopt standards that addressed indoor air quality in indoor work environments.

Letters of Interpretation

National Consensus and Industry Standards

Note: These are NOT OSHA regulations. However, they do provide guidance from their originating organizations related to worker protection.

American National Standards Institute (ANSI)/American Society of Heating, Refrigerating, and Air Conditioning Engineers (ASHRAE)

  • 62.1, Ventilation for Acceptable Indoor Air Quality. Sets minimum ventilation rates and other requirements for commercial and institutional buildings.

Institute of Inspection, Cleaning and Restoration Certification (IICRC)

  • S500, Standard and Reference Guide for Professional Water Damage Restoration. Provides a specific set of practical standards for water damage restoration. It does not attempt to teach comprehensive water damage restoration procedures; rather it provides the foundation for basic principles of proper restoration practices.
  • S520, Standard and Reference Guide for Professional Mold Remediation. Establishes mold contamination definitions, descriptions and conditions (1, 2, 3), and general guidance, which, when properly applied, can assist remediators and others in determining criteria that trigger remediation activities or confirm remediation success.
Back to Top

Thank You for Visiting Our Website

You are exiting the Department of Labor's Web server.

The Department of Labor does not endorse, takes no responsibility for, and exercises no control over the linked organization or its views, or contents, nor does it vouch for the accuracy or accessibility of the information contained on the destination server. The Department of Labor also cannot authorize the use of copyrighted materials contained in linked Web sites. Users must request such authorization from the sponsor of the linked Web site. Thank you for visiting our site. Please click the button below to continue.