The MFSA plan was activated for vessel grounding. The anchor slipped and put the vessel into sandy mud bank. An MFSA ISRC and Clean Rivers Response Manager responded, mobilizing an FRV. Clean Rivers completed initial assessment and found no oil sheen in the water. Per the ISRC, the FRV remained on standby until a tug assist was able to move the vessel off the bank at high tide. After further inspection for pollution found none response was terminated per the USCG.