October 2012 - The final treatment of the Milltown sediments began this year at the BP- ARCO Waste Repository and will continue through 2013. The Milltown sediments came from the cleanup of the Milltown Reservoir Superfund site and cover about 660 acres of the repository. . It was originally thought that the sediments contained enough organic material to work as a cover soil, but failure to grow adequate vegetation led to dust storms and public frustration. BP was still on the hook to develop a solution, so after a series of greenhouse studies, they proposed a new design to deal with the sediments. Lime will be applied and tilled into the top 6-inches of the sediments, then a 12-inch clean soil cap will be installed and re-vegetated with the help of compost and fertilizer.