From the US Coast Guard:
SAVANNAH, Ga. - The Coast Guard has terminated the safety zone around the Imperial Sugar Refinery and fully re-opened the Savannah River to all marine traffic with no restrictions at 11:45 a.m.
The safety zone had been in effect since 7:50 p.m. on Thursday. Coast Guard small boats devoted over 100-patrol hours to enforce the safety zone, with 40 of those hours provided by Station Tybee, 26 hours by Aids to Navigation Team Tybee, and 35 hours by volunteer crews from Coast Guard Auxiliary flotillas based in Savannah, Ga., and Hilton Head, S.C.
Coast Guard Air Station Savannah spent 4 hours conducting initial search activities and aerial environmental assessments of the incident scene and shoreline.
Over a dozen Coast Guard Marine Safety Unit Savannah personnel dedicated nearly 200 hours towards managing the Coast Guard's initial response to the incident, coordinating waterway openings, and conducting environmental assessments and pollution abatement oversight.