EPA will monitor for any potential impacts downstream from the release due to the berm breach.
Once the Big Sioux River has receded, EPA will work with the State and PRP to establish further removal actions and conduct a soil removal of the impacted area at the crash site.
SITE UPDATE as of July 23, 2019 - By July 10, 2019, flood waters from the Big Sioux River had completely crested the berm and the area of the crash site was completely inundated, while the majority of the berm was submerged. As of July 19, 2019 flood waters had receded exposing portions of the berm, but were expected to rise again. Surficial soil and surface water samples collected by both the EPA and PRP before and after inundation of the crash site by flood waters demonstrated that contaminant levels were below levels of concern in the Big Sioux River.