9/10/2008 - SETTLEMENT AGMT FOR RECOVERY OF PAST RESPONSE COSTS. THE PARTIES AGREE THAT SETTLING PARTIES WILL REIMBURSE EPA FOR 85 PERCENT OF THE PAST RESPONSE COSTS THAT EPA HAS INCURRED THROUGH THE EFFECTIVE DATE OF THIS AGMT, PLUS AN ADDITIONAL SUM OF $1,176.81 OF INTEREST ON $71,914.85 (CALCULATED FROM JANUARY 14, 2008, THE DATE OF THE NOTICE LETTER TO THE SETTLING PARTIES, TO MAY 30, 2008). PAYMENT SHALL BE MADE WITH 30 DAYS OF THE RECEIPT OF THE LETTER FROM EPA INFORMING SETTLING PARTIES THAT THE SETTLMENT AGREEMENT IS EFFECTIVE.