The United States' complaint names Pharmacia LLC and Solutia Inc. as defendants. The complaint requests recovery of oversight and other response costs that the United States incurred in connection with a UAO for Remedial Design and Interim Remedial Action, Docket No. V-W-02-C-716, issued by EPA on September 30, 2002 to prevent groundwater contamination releasing to the Mississippi River adjacent to Sauget Area 2 disposal Site R and the resulting impact area located in Sauget, St. Clair County, Illinois. Both defendants signed the Consent Decree, agreeing to pay a total of $1.7 million in response costs