1910.1052(d)(1)(ii): Representative samples
Key takeaways
- 1910.1052(d)(1)(ii) is part of OSHA's general industry standards (29 CFR Part 1910).
- Related part: 1910.1052(d) Exposure monitoring (70 citations).
- Free 5-minute toolbox talk for your crew below.
In this article
What this rule covers
29 CFR 1910.1052(d)(1)(ii) ("Representative samples") is one requirement inside 1910.1052 Methylene chloride, an OSHA general industry standard (Part 1910). It includes 3 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
(ii) Representative samples. The employer may consider personal breathing zone air samples to be representative of employee exposures when they are taken as follows:
(A) 8-hour TWA PEL. The employer has taken one or more personal breathing zone air samples for at least one employee in each job classification in a work area during every work shift, and the employee sampled is expected to have the highest MC exposure.
(B) Short-term exposure limits. The employer has taken one or more personal breathing zone air samples which indicate the highest likely 15-minute exposures during such operations for at least one employee in each job classification in the work area during every work shift, and the employee sampled is expected to have the highest MC exposure.
(C) Exception. Personal breathing zone air samples taken during one work shift may be used to represent employee exposures on other work shifts where the employer can document that the tasks performed and conditions in the workplace are similar across shifts.
Source: eCFR, text current as of 2026-10-15. Read all of 1910.1052.
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Related parts of this rule
- 1910.1052(d) Exposure monitoring 70 citations
- 1910.1052(d)(2) Initial determination 46 citations
- 1910.1052(d)(1)(i) 21 citations
- 1910.1052(d)(1) Characterization of employee exposure 21 citations
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About this page
Sources
- 29 CFR 1910.1052 (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.