The National Marine Fisheries Service has granted a Letter of Authorization (LOA) to Hilcorp Alaska LLC. This authorization allows the incidental, unintentional take—or disturbance—of four species of marine mammals during Hilcorp's oil and gas activities in Cook Inlet, Alaska. This LOA is issued under the Marine Mammal Protection Act and incorporates necessary conditions related to the mitigation, monitoring, and reporting of any incidents. The authorization is valid until April 21, 2021.
Simple Explanation
Hilcorp Alaska got special permission to have oil and gas activities in Alaska where they might accidentally bother some ocean animals. They have to be careful and tell the government if anything happens, and they have to stop by next April.