WITHIN 30 DAYS OF EFFECTIVE DATE OF THIS AGREEMENT, THE SETTLING PARTIES, JEROME E. CRAWFORD, SHALL APY TO THE EPA HAZARDOUS SUBSTANCE SUPERFUND $2,000 IN REIMBURSEMENT OF PAST RESPONSE COSTS, PLUS AN ADDITIONAL SUM FOR INTEREST ON THAT AMOUNT CALCULATED FROM THE DATE SET FORTH IN THE DEFINI TION OF PAST RESPONSE COSTS THROUGH THE DATE OF PAYMENT. IF ANY AMOUNTS DUE TO EPA ARE NOT PAID BY THE REQUIRED DATE, SETTLING PARTIES SHALL PAY TO EPA AS A STIPULATED PENALTY $50 PER VIOLATION PER DAY THAT SUCH PAYMENT IS LATE.