THIS IS A CERCLA PROSPECTIVE PURCHASER AGREEMENT. THE SET- TLING RESPONDENTS WILL INVESTIGATE AND CLEAN-UP REMAING HAZARDOUS SUBSTANCES AT THE SITE AND REDEVELOP THE PROPERTY UNDER WISCONSIN'S VOLUNTARY CLEAN-UP PROGRAM AT A COST OF BETWEEN $1,058,000 TO $3,546,000, DEPENDING ON THE FINAL REMEDIES TO BE SELECTED BY WDNR. THESE COSTS ARE FAR IN EXCESS OF THE FAIR MARKET VALUE OF THE SITE IN ITS CURRENT CONDITION. IN EXCHANGE FOR THIS WORK, EPA WILL PROVIDE A COVENANT NOT TO SUE AND CONTRIBUTION PROTECTION, AND WILL REMOVE THE LIEN ON THE SITE. THE PPA WAS EXECUTED BY THE U.S. ON JUNE 12, 2000.