The exercise, held every other year, evaluated local organizations including first responders.
Rock Island County's EMA coordinator is Lieutenant Matt DeSmyter.
"They had set objectives and Rock Island met those objectives, and had no noted significant deficiencies."
State and federal emergency management agencies held a meeting on Friday regarding the exercise earlier this week.
"It was a very positive, it was a very brief meeting that we had, today. Like I said we'll get more details on it hopefully next week." says DeSmyter.
The Cordova plant is now primarily owned by Constellation Energy Corporation, since Exelon's separation was completed in February.