ID=77014524The gym was full of 250 people who had questions about dangerous radiation flowing in their backyards.

The Army Corps of Engineers were there to answer some of them. They wanted to know where the radiation was and how deep it was. Engineers found contamination in 7 homes and businesses in the last few weeks.

They've taken more than 9000 samples along the banks of the creek. Next month they'll be tearing down trees and building temporary roads to access parts of the creek. They're working on Frost Avenue and St. Denis Bridge right now but they'll keep working their way to the Missouri river.

Their investigation is in the early stages and they don't know what they'll find. Its not the most comforting news to Tracy. She's lived and played in Coldwater Creek for more than 40 years. She was one of the 250 people who wanted to know how deep the danger in her backyard is. She now has a rare cancer only 5000 other people in the world have. Other homeowners and Coldwater Creek residents say they too have had cancers and diseases they can't understand.

The government is spending billions of dollars to cleanup Coldwater Creek. The waste and rust from barrels of radioactive contaminants seeped into the river in the 1940's when Mallinkrodt was purifying uranium to build the world's first atomic bomb.

The CDCs Agency for Toxic Substances and Disease Registry in also in St. Louis now to help residents find the help they need.

The agency will have another public session next month to answer questions.