33 C.F.R. § 158.170 Grounds for suspension.
Title 33 - Navigation and Navigable Waters
The COTP may suspend a Certificate of Adequacy if— (a) Deficiencies recur or significantly affect the adequacy of the reception facility; (b) Continued operations will result in undue delay to ships calling at the port or terminal; (c) There is a failure to accept NLS residue from a ship after it's cargo tanks are prewashed in accordance with 46 CFR 153.1120; or (d) There is a substantial threat of discharge of oil or NLS into or upon the navigable waters of the United States or adjoining shorelines.
Title 33: Navigation and Navigable Waters
PART 158—RECEPTION FACILITIES FOR OIL, NOXIOUS LIQUID SUBSTANCES, AND GARBAGE
Subpart A—General
Suspension, Revocation, and Appeals
§ 158.170 Grounds for suspension.

