1. SECTION 1423(C) OF THE SAFE DRINKING WATER ACT ( SDWA ), 42 U.S.C. SECTION 300H-2(C). 2. NORTHBROOK OIL AND GAS COMPANY, AN OKLAHOMA COMPANY P.O. BOX 14055 OKLAHOMA CITY, OKLAHOMA COUNTY, OKLAHOMA 73113 WELLS: 11, OK0060, SW/4, SEC. 18, T3 S, R11 W 3, OK0065, NW/4, SEC. 19, T3 S, R11 W 3. RESPONDENT WAS IN VIOLATION OF SECTION 1421 OF THE SDWA BY: 1) FAILURE TO HAVE MECHANICAL INTEGRITY; AND 2) FAIL- URE TO PLUG AND ABANDON WITHIN TWO YEARS AFTER CESSATION OF INJECTION OPERATIONS. 4. RELIEF SOUGHT PURSUANT TO SECTION 1423(C) OF THE SDWA, EPA ISSUED A FINAL ADMINISTRATIVE ORDER (AO) THAT ORDERED THE RESPONDENT TO: A) PLUG THE WELLS ACCORDING TO REGULA- TIONS WITHIN 30 DAYS AFTER THE EFFECTIVE DATE OF THE AO.