OSHA has inspected Subterranean LLC once in Wisconsin.
The inspection began on Apr 10, 2026 after a complaint, in Milwaukee; the case is still open.
That inspection ended with 1 citation item: 1 serious.
Penalties were first proposed at $2,838 and still stand at $2,838.
How that compares: the median penalty per cited inspection for construction employers since 2015 is $3,079, and Subterranean LLC averages $2,838 (1 cited inspection).
Want to know if OSHA cites Subterranean LLC again? Add it to a watchlist and we will email you the morning the citation shows up.
Watch this company2018 E. Edgewood Avenue, Milwaukee, WI 53211 · Plumbing, Heating, and Air-Conditioning Contractors · OSHA's record · Phone and website on Google Maps
| Citation and rule | Type | Proposed | Current | Issued | Status |
|---|---|---|---|---|---|
| Citation 1, item 2 29 CFR 1926.652(a)(1) · Trench protection |
Serious | $2,838 | $2,838 | May 19, 2026 | Final |
Current text from the Code of Federal Regulations. Some citations were issued under older wording.
29 CFR 1926.652(a)(1)
(a) Protection of employees in excavations. (1) Each employee in an excavation shall be protected from cave-ins by an adequate protective system designed in accordance with paragraph (b) or (c) of this section except when:
Source: U.S. Department of Labor, OSHA enforcement data. A citation is OSHA's allegation; employers can contest it, and the status column shows where each item stands. Something wrong on this page? Tell us.