Environment Agency Wales says they don't believe the cargo ship that ran aground on rocks near to Llanddulas poses a major pollution threat. Officers from the agency are patrolling beaches in the area looking for signs of pollution following the incident on Tuesday evening.
Water samples have been taken at various points around the ship to investigate the light sheen visible around the vessel.
Work to offload the remaining fuel aboard the boat is due to begin on Thursday afternoon.
The owners of the HV Carrier, which ran aground on the north Wales coast last week, have said it is going to be demolished.
Work is continuing to remove the fuel on board the stricken cargo ship on the North Wales coast.
Commuters in Colwyn Bay have been dealing with long tailbacks after police closed the A55 to deal with the tanker that ran aground.