A burst pipeline has polluted the waters with thousands of gallons of oil.

On Saturday, roughly five miles off the coast of Huntington Beach in Orange County, California, an oil pipeline burst, dumping approximately 126,000 gallons of post-production crude oil directly into the ocean waters and nearby beaches. While the leak since seems to have stopped, the damage has already been done: a 13-mile-long oil slick has taken shape along the coastline, and does not show any signs of shrinking or stopping.

Health officials for Orange County have issued warnings to locals advising them to stay away from the coastline as much as possible. Anyone who has made contact with the oil slick or polluted waters is advised to seek immediate medical attention.

“In a year, that has been filled with incredibly challenging issues, this oil spill constitutes one of the most devastating situations that our community has dealt with in decades,” Huntington Beach Mayor Kim Carr said in a public statement. “We are doing everything in our power to protect the health and safety of our residents, our visitors and our natural habitats.”

Damage surveys are currently in progress as officials discover more and more damaged ocean areas and killed wildlife, including fish and birds. “The oil has infiltrated the entirety of the (Talbert) Wetlands. There’s significant impacts to wildlife there,” said Orange County Supervisor Katrina Foley. “These are wetlands that we’ve been working with the Army Corps of Engineers, with the Land Trust, with all the community wildlife partners to make sure to create this beautiful, natural habitat for decades. And now in just a day, it’s completely destroyed.”

The pipeline that burst is the property of Houston-based Amplify Energy, who have expressed their intent to fully cooperate with any investigations into the incident. “Our employees live and work in these communities, and we’re all deeply impacted and concerned about the impact on not just the environment, but the fish and wildlife as well,” CEO Martyn Willsher said a press conference. “We will do everything in our power to ensure that this is recovered as quickly as possible, and we won’t be done until this is concluded.”