This site is one of the former Chicago NW sites that were transferred to Contaminated Sites from the Emergency Response Section in 2006. The other sites include; 1.) CNW Jefferson Lease site 2.) CNW Gilmore City Lease site 3.) CNW Rolfe (a Targeted Assessment was done for this under the Brownfields program) 4.) CNW Hull Avenue Des Moines 5.) CNW Estherville Locomotive maintenance 6.) CNW Manson City Fueling 7.) CNW Grand Junction 8.) CNW Missouri Valley 9.) CNW Clarion 10.) CNW Ft. Dodge 11.) CNW Bell Avenue Des Moines Contamination was discovered in exploratory potholes that were dug on the property in 2023 in preparation of the replacement of an old underground fuel line that was found to leaking into the secondary containment structure, and DNR subsequently requested a site assessment to determine the magnitude and extent of contamination. Site assessment work is scheduled to be conducted in Spring 2025.