Cleanup organizer Ashley Hicks stood on a bed of yellow cottonwood leaves next to the South Umpqua River near Micelli Park last week and described what she saw there a month ago. Back then, about 12 tents were clustered nearby and a hypodermic needle was stuck in the elbow of a maple tree. To the south, the park resembled a landfill. “It was bad. There was a lot of trash. There was just garbage scattered along the entire riverbank,” Hicks said. The garbage on the six-acre riverfront parcel behind the historic Mill-Pine neighborhood in southeast Roseburg is gone, as are …