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30 U.S.C. 1751, 31 U.S.C. 9701, 33 U.S.C. 1321(j)(1)(C), 43 U.S.C. 1334.
76 FR 64462, Oct. 18, 2011, unless otherwise noted.
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Subscribe to: 30 CFR 250.1742
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Nomenclature changes to part 250 appear at 77 FR 50891, Aug. 22, 2012.
If you do not trawl a site, you can verify that the site is clear of obstructions by using any of the methods shown in the following table:
| If you use . . . | You must . . . | And you must . . . |
|---|---|---|
| (a) Sonar, | cover 100 percent of the appropriate grid area listed in § 250.1741(a), | Use a sonar signal with a frequency of at least 500 kHz. |
| (b) A diver, | ensure that the diver visually inspects 100 percent of the appropriate grid area listed in § 250.1741(a), | Ensure that the diver uses a search pattern of concentric circles or parallel lines spaced no more than 10 feet apart. |
| (c) An ROV (remotely operated vehicle), | ensure that the ROV camera records videotape over 100 percent of the appropriate grid area listed in § 250.1741(a), | Ensure that the ROV uses a pattern of concentric circles or parallel lines spaced no more than 10 feet apart. |