1910.1051(d)(1): General
Key takeaways
- 1910.1051(d)(1) is part of OSHA's general industry standards (29 CFR Part 1910).
- Related part: 1910.1051(d) Exposure monitoring.
- Free 5-minute toolbox talk for your crew below.
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What this rule covers
29 CFR 1910.1051(d)(1) ("General") is one requirement inside 1910.1051 1,3-Butadiene, an OSHA general industry standard (Part 1910). It includes 4 sub-paragraphs. The official text below is copied word for word from the Electronic Code of Federal Regulations (eCFR). The numbers, injury cases and training on this page show how OSHA enforces it on real job sites.
Official text
(1) General.
(i) Determinations of employee exposure shall be made from breathing zone air samples that are representative of the 8-hour TWA and 15-minute short-term exposures of each employee.
(ii) Representative 8-hour TWA employee exposure shall be determined on the basis of one or more samples representing full-shift exposure for each shift and for each job classification in each work area.
(iii) Representative 15-minute short-term employee exposures shall be determined on the basis of one or more samples representing 15-minute exposures associated with operations that are most likely to produce exposures above the STEL for each shift and for each job classification in each work area.
(iv) Except for the initial monitoring required under paragraph (d)(2) of this section, where the employer can document that exposure levels are equivalent for similar operations on different work shifts, the employer need only determine representative employee exposure for that operation from the shift during which the highest exposure is expected. Open (d)(1)(iv)
Source: eCFR, text current as of 2026-10-15. Read all of 1910.1051.
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Sources
- 29 CFR 1910.1051 (eCFR), text current as of 2026-10-15
- U.S. Department of Labor enforcement data: OSHA inspections, citations and accident records, copied nightly
3-year window. Federal OSHA only; state-plan rules are not counted. Plain-language text is a summary, not legal advice; the official text controls. Black Belt Safety is not part of OSHA or the Department of Labor.