MDA substance technical guidelines

Yes. The appendix explicitly states that the requirements applicable to construction work under 1926.60 App B are identical to those set forth in appendix B to 1910.1050.

• Use 1926.60 App B when you need construction-specific reference to the same substance technical guidance found in 1910.1050 App B.

Construction employers should consult the substance technical guidelines in appendix B to 1910.1050 because 1926.60 App B states the construction guidance is identical to that appendix.

• For the regulatory framework governing hazardous substance handling in general industry, see 1910.1050.

No. The appendix provides technical guidance that supplements the mandatory requirements; it does not replace the regulatory requirements found in 1926.60 or 1910.1050.

• Rely on the binding provisions in the main standard (1926.60 for construction and 1910.1050 for general industry) and use 1926.60 App B or 1910.1050 App B for substance-specific technical guidance.

No. A substance listed in 1910.1050 App B does not by itself create a different or additional construction-only requirement; 1926.60 App B states the guidance is identical for construction.

• Employers must follow the binding provisions in the applicable standards (1926.60 for construction; 1910.1050 for general industry) and use the appendix for technical substance details.

Asbestos remediation work that involves asbestos-containing building materials (ACBM) is covered by OSHA’s construction asbestos standard, 29 CFR 1926.1101, not the general industry asbestos standard. This is explained in OSHA’s letter of interpretation on asbestos remediation protocols (Asbestos remediation protocols).

• The letter clarifies that remediation activities involving ACBM are subject to 1926.1101 even when performed by companies whose typical business is not construction.

Yes. Because 1926.60 App B states the construction appendix is identical to 1910.1050 App B, employers on construction sites may use the substance technical guidance in 1910.1050 App B for substance identification, exposure evaluation, and selecting controls that support compliance with the applicable standard (1926.60 and 1910.1050).

• Use the appendix as technical reference while ensuring compliance with the enforceable provisions of the relevant standard.

Yes. Employers must follow the applicable hazard communication and other statutory standards in addition to using appendix guidance; the substance technical guidance in 1926.60 App B points to the same technical information as 1910.1050 App B, but it does not replace other standards such as the Hazard Communication Standard (1910.1200).

• Consult the main standards (for example, 1910.1050 and 1926.60) to determine mandatory obligations and use the appendix for technical substance guidance.

For definitive substance technical guidance referenced by 1926.60 App B, cite appendix B to 1910.1050, because the construction appendix states they are identical.

• Use the appendix entries to identify substance-specific technical information and then apply the binding requirements in 1926.60 or other applicable standards.

No. State-plan states must have programs at least as effective as Federal OSHA, but a State plan may adopt more stringent or different requirements; the technical guidance in 1926.60 App B points to 1910.1050 App B, yet employers should check their State-plan rules for any additional obligations.

• When working in a State with an OSHA-approved State plan, confirm whether the State has adopted the same appendix guidance or has more stringent requirements, and follow the State's rules in addition to federal standards.