1. SECTION 1423(C) OF THE SAFE DRINKING WATER ACT ( SDWA ), 42 U.S.C. SECTION 300H-2(C). 2. CSC OIL COMPANY ELLIS AND GLENNA THOMAS P.O. BOX 808 PAWHUSKA, OSAGE COUNTY, OKLAHOMA 74056 WELLS: 18SWD OS1170 NW/4, SEC. 28, T25 N, R8 E ATLANTIC 20-W OS1171 NW/W, SEC. 28, T25 N, R8 E ATLANTIC 1 OS2055 SW/4, SEC. 32, T25 N, R9 E PERSHING 3-A OS2058 NW/4, SEC. 34, T25 N, R9 E PERSHING 4 OS4490 SE/4, SEC. 34, T26 N, R9 E PAWHUSKA 3. RESPONDENT WAS IN VIOLATION OF SECTION 1421 OF THE SDWA BY 1) FAILURE TO SUBMIT REQUIRED ANNUAL OPERATION REPORTS AND 2) MAINTAINING AN INJECTION WELL IN A MANNER THAT COULD ALLOW CONTAMINANTS TO FLOW INTO UNDERGROUND SOURCES OF DRINKING WATER. 4. RELIEF SOUGHT PURSUANT TO SECTION 1423(C) OF THE SDWA, EPA ISSUED A PROPOSED ADMINISTRATIVE ORDER (AO) THE RE- SPONDENT. THE PROPOSED AO WOULD REQUIRED THE RESPONDENT TO: A) COMPLETE AND SUBMIT NO LATER THAN 15 DAYS AFTER THE EFFECTIVE DATE OF THIS AO THE ANNUAL OPERATING RE- PORTS FOR THE MONITORING PERIOD OF OCT. 1996 THROUGH SEPT. 1998 FOR THE WELLS, AND 2) PROPERLY PLUG AND ABAN- DON WELL NO. 20-W IN ACCORDANCE W