Section 105.253 - Risk Group classifications for facilities(a) For purposes of the Transportation Worker Identification Credential (TWIC) requirements of this subchapter, the following facilities subject to this part are in Risk Group A:(1) Beginning June 8, 2020: Facilities that receive vessels certificated to carry more than 1,000 passengers.(2) Beginning May 8, 2026: Facilities that handle Certain Dangerous Cargoes (CDC) in bulk and transfer such cargoes from or to a vessel.(3) Beginning May 8, 2026: Facilities that handle CDC in bulk, but do not transfer it from or to a vessel.(4) Beginning May 8, 2026: Facilities that receive vessels carrying CDC in bulk but, during the vessel-to-facility interface, do not transfer it from or to the vessel.(b) Facilities may move from one Risk Group classification to another, based on the material they handle or the types of vessels they receive at any given time. An owner or operator of a facility expected to move between Risk Groups must explain, in the Facility Security Plan, the timing of such movements, as well as how the facility will move between the requirements of the higher and lower Risk Groups, with particular attention to the security measures to be taken when moving from a lower Risk Group to a higher Risk Group.USCG-2007-28915, 81 FR 57712, Aug. 23, 2016, as amended by USCG-2017-0711, 85 FR 13516, Mar. 9, 2020; USCG-2023-0265, 88 FR 23350, Apr. 17, 2023 USCG-2007-28915, 81 FR 57712, 8/23/2016; 85 FR 13516, 5/8/2020; USCG-2023-0265, 88 FR 23350, 4/17/2023