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APBy MATTHEW BROWN
BILLINGS, Mont. (AP) - Exxon Mobil Corp. will have to bring in more people to mop up oil from a broken pipeline beneath the Yellowstone River as receding floodwaters reveal new contamination, federal officials said Friday.
Also Friday, Montana environmental regulators said the pipeline may have leaked up to 1,200 barrels of oil into the scenic river. That equals 50,400 gallons and is 20 percent higher than prior estimates from Exxon Mobil.
Water levels on the Yellowstone have dropped six feet since the July 1 accident. Hundreds of logjams and debris piles, many coated in a layer of drying crude, now litter its banks and islands.
After burning the piles was rejected by state officials, representatives of the Environmental Protection Agency said Friday that oiled debris will have to be pulled apart, run through wood-chippers and hauled away.
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ExxonMobil cleanup workers remove bags of oil-covered vegetation from a side channel along the Yellowstone River near Billings, Mont. on Friday, July 22, 2011. After a pipeline spilled an estimated 1,000 barrels of oil into the river on July 1, receding floodwaters are revealing more contamination miles downstream from the spill site. (AP Photo/Matthew Brown)