1926.1101(g)(7)(ii): Stopping Asbestos Migration in Indoor Class II Work
For indoor Class II asbestos jobs where there is no negative exposure assessment, where conditions change and exposure may be above the PEL, or where the material is not removed substantially intact, employers must keep airborne asbestos from leaving the regulated area. They must use critical barriers over all openings or another isolation method verified by perimeter or clearance monitoring, and place impermeable dropcloths beneath all removal work.
Key takeaways
- 1926.1101(g)(7)(ii) is part of OSHA's construction standards (29 CFR Part 1926, Subpart Z).
- OSHA cited it 10 times in the last 3 years, in 8 inspections, with $36,338 in current penalties.
- Most citations: MA (3), VA (2), OR (2).
- Related part: 1926.1101(g) Methods of compliance (297 citations).
- Free 5-minute toolbox talk for your crew below.
In this article
What this rule covers
29 CFR 1926.1101(g)(7)(ii) is one requirement inside 1926.1101 Asbestos, an OSHA construction standard (Part 1926, Subpart Z). 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) For all indoor Class II jobs, where the employer has not produced a negative exposure assessment pursuant to paragraph (f)(2)(iii) of this section, or where during the job, changed conditions indicate there may be exposure above the PEL or where the employer does not remove the ACM in a substantially intact state, the employer shall use one of the following methods to ensure that airborne asbestos does not migrate from the regulated area; 10 citations
(A) Critical barriers shall be placed over all openings to the regulated area; or, 1 citations
(B) The employer shall use another barrier or isolation method which prevents the migration of airborne asbestos from the regulated area, as verified by perimeter area monitoring or clearance monitoring which meets the criteria set out in paragraph (g)(4)(ii)(B) of this section. 2 citations
(C) Impermeable dropcloths shall be placed on surfaces beneath all removal activity; 1 citations
Source: eCFR, text current as of 2026-10-15. Read all of 1926.1101.
Where and how often it was cited
| Year | Citations |
|---|---|
| 2025 | 4 |
| 2026 | 6 |
Top states: MA (3), VA (2), OR (2), IN (1), MN (1)
Largest penalties
| Employer | Location | Penalty for this rule |
|---|---|---|
| ACCOLADE ENVIRONMENTAL CONTRACTING, CORP. | BOSTON, MA | $33,103 |
| FINCHUM SPORTS FLOORS L.L.C. | ABINGDON, VA | $2,381 |
| 109277 - PREMIERE RESTORATION LLC | MANKATO, MN | $854 |
| JBS PREPARED FOODS | SOUTH BEND, IN | $0 |
| 317740312 - ARCIFORM LLC | PORTLAND, OR | $0 |
Free toolbox talk
A 5-minute crew talk on 1926.1101(g)(7)(ii), plus alerts when this rule changes. Free.
OSHA interpretation letters
Related parts of this rule
- 1926.1101(g) Methods of compliance 297 citations
- 1926.1101(g)(1) 105 citations
- 1926.1101(g)(8) Additional Controls for Class II work 71 citations
- 1926.1101(g)(7) Work practices and engineering controls for Class II work 40 citations
- 1926.1101(g)(5) Specific control methods for Class I work 29 citations
- 1926.1101(g)(8)(i) 28 citations
- 1926.1101(g)(7)(i) 25 citations
- 1926.1101(g)(8)(ii) 18 citations
- 1926.1101(g)(1)(ii) 16 citations
- 1926.1101(g)(4) Class I Requirements 15 citations
- 1926.1101(g)(5)(i) 15 citations
- 1926.1101(g)(8)(iii) 15 citations
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Frequently asked questions
When are barriers required on indoor Class II asbestos jobs?
When there is no negative exposure assessment, when changed conditions indicate exposure may be above the PEL, or when the ACM is not removed in a substantially intact state.
What kind of barrier is acceptable?
Critical barriers over all openings, or another barrier or isolation method that prevents migration as verified by perimeter area or clearance monitoring.
Are dropcloths required?
Yes. Impermeable dropcloths must be placed on surfaces beneath all removal activity.
About this page
Sources
- 29 CFR 1926.1101 (eCFR), text current as of 2026-10-15
- U.S. Department of Labor enforcement data: OSHA inspections, citations and accident records, copied nightly; data as of 2026-10-20
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.