The National Oceanic and Atmospheric Administration reopened over 4,000 square miles of Gulf waters in western Louisiana to recreational and commercial fishing, Friday, according to a press release issued by the Deepwater Horizon Response Joint Command.

No oil has been reported in the area since July 18, excluding a light sheen on July 29, and trajectory models show that no contamination is expected to enter the area.

The NOAA sampled fish and shrimp in the region from July 26 to July 29 and have declared all samples, “well below the levels of concern.” The NOAA will continue to monitor the area for oil, and will conduct fish sampling to and testing to assure that the seafood is safe.

“We have confidence that seafood harvested from this area is free from harmful oil residues and can be enjoyed by consumers around the nation,” said Margaret Hamburg, M.D., Commissioner of the Food and Drug Administration.

Over 48,000 square miles of the Gulf remain closed as the administration works to determine the ecological and health effects of the BP-Deepwater Horizon oil spill and the highly criticized heavy use of chemical dispersants following the spill.