United States Coast Guard officials on Thursday said that the quantity of the crude oil that was spilled off the coast of California is considerably less than what was previously estimated.

The quantity was determined to be close to 25,000 gallons, nearly 20% of what was initially estimated, according to US media reports.

Preliminary estimates of the oil spill, which happened on the coast of Orange County, suggested the upper limit of the leak would be close to 132,000 gallons. Rebecca Ore, the Coast Guard Captain, cleared that the final estimates will be closer to the lower extremes, which was set at 25,000 gallons.

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Ore said while addressing from Newport Beach, “We have a high degree of confidence that the spill amount is approximately 588 barrels. That number may potentially adjust a small degree”, according to reports from Associated Press.

Coast Guard officials said it came from a leak in a pipeline owned by Houston-based Amplify Energy Corp. that shuttles crude from offshore platforms to the coast. Officials said the cause of the leak remains under investigation, but the pipeline was likely damaged by a ship’s anchor several months to a year before it ruptured.

The shorelines in Huntington Beach, which is known as “Surf City USA,” and neighboring Newport Beach were shut down until Monday. Coastal shops have taken a hit, and environmental advocates have voiced concerns about the long-term impact of the spill on sensitive wetland areas and wildlife.

Also Read: California oil spill: Surfers, local businesses suffer severe impact

Workers in protective gear continue to comb the sand for tar balls washing ashore along more than 70 miles (113 kilometers) of coastline in Orange and San Diego counties. Roy Kim, an environmental scientist with California’s Office of Spill Prevention and Response, said the size of tarballs being collected on beaches has diminished from the early days after the spill.

(With AP inputs)