4-Dimethylaminoazobenzene requirements

Yes. Under 1926.1115 the requirements that apply to construction work involving 4‑Dimethylaminoazobenzene are the same as those in 1910.1003. See 1926.1115 for the cross-reference to the general industry provision.

Consult the general industry rule referenced by 1926.1115: the detailed requirements for handling, controls, and protections for 4‑Dimethylaminoazobenzene are located in 1910.1003. The construction rule 1926.1115 explicitly states the requirements are identical to that section.

Employers in OSHA‑approved State Plan states must follow their State Plan’s occupational safety rules, which must be at least as effective as federal OSHA’s; they should check their State Plan for any differences. Federal guidance explains that State Plans may have more stringent requirements, and employers in those states must follow the State’s rules in addition to the federal baseline in 1926.1115 and 1910.1003. See the OSHA interpretation on scope and State Plans for similar guidance: https://www.osha.gov/laws-regs/standardinterpretations/2024-08-01.

No. Under 1926.1115 the construction duties are not different—the section explicitly says the requirements applicable to construction work are identical to those in 1910.1003. See 1926.1115 for that cross‑reference.

The official rulemaking history for the construction entry is shown in the Federal Register citations listed in 1926.1115, and the section points to the identical requirements in 1910.1003. You can review 1926.1115 for the Federal Register dates cited (e.g., 58 FR 35218, June 30, 1993) and then read the substantive requirements in 1910.1003.

Yes. OSHA letters of interpretation provide clarification about how OSHA interprets standards and can help apply the requirements in specific situations, but they do not create new legal obligations beyond the standards themselves. For practical application, follow the text in 1910.1003 and use OSHA letters for additional guidance; for example, see the asbestos interpretation that explains letters interpret standards but do not add obligations at https://www.osha.gov/laws-regs/standardinterpretations/2024-11-14.

Use the requirements and training elements specified in 1910.1003 as your source, because 1926.1115 directs that construction work follow those identical provisions.

Federal OSHA enforces the construction standards in states without separate State Plans, and State Plan agencies enforce their own comparable programs in OSHA‑approved states; both enforcement authorities look to the construction cross‑reference in 1926.1115 and the substantive provisions in 1910.1003. See the State Plan discussion in OSHA interpretations for how State Plans relate to federal standards: https://www.osha.gov/laws-regs/standardinterpretations/2024-08-01.

Follow the construction approach when the work is construction‑type activity; 1926.1115 directs construction employers to follow the requirements in 1910.1003, so construction‑style remediation work should comply with those cited provisions. OSHA has previously explained that the nature of the work (construction‑type activities) drives which construction standards apply, see the asbestos interpretation explaining that remediation work involving building materials is covered by the construction asbestos standard at https://www.osha.gov/laws-regs/standardinterpretations/2024-11-14.

The exact regulatory requirements are in 1910.1003, which 1926.1115 states are identical for construction work. Read 1910.1003 for specific obligations such as exposure controls, labeling, training, and other protective measures as written in the regulatory text.