TALLGRASS PETROLEUM, INCORPROATED ( RESPONDENT ) IS A COR- PORATION AUTHORIZED TO DO BUSINESS IN THE STATE OF OKLAHOMA AND AS SUCH IS A PERSON WITHIN THE MEANING OF SECTION 1401 (12) OF THE ACT, 42 U.S.C.SEC. 300F (12). RESPONDENT IS SUBJECT TO UNDERGROUND INJECTION CONTROL ( UIC ) PROGRAM REQUIREMENTS AT 40 C.F.R. SEC. 147, SUBPART GGG. RESPONDENT IS THE OWNER/OPERATOR OF AN INJECTION WELL WHICH IS AN EXISTING CLASS II WELL AS THOSE TERMS ARE DE- FINED AT 40 C.F.R. SEC. 147.2902. THE INJECTION WELL IS I- DENTIFIED AS WELL NO. W-13 ( WELL ). THE WELL IS ALSO IDEN- TIFIED BY EPA INVENTORY NO. OS1507, AND IS LOCATED IN THE NORTHWEST QUARTER OF SECTION 34, TOWNSHIP 22 NORTH, RANGE 10 EAST, WILDHORSE FIELD, OSAGE COUNTY, OK. CROWN CENTRAL PETROLEUM CORPORATION ( CROWN ), AN OWNER OF THE LEASE PRIOR TO,JAN. 1, 1988, CEASED USING THE WELLS FOR FLUID INJECTION ON OR BEFORE JAN. 1, 1985. CROWN SUBMITTED A PLAN FOR FUTURE USE OF THE WELL ON APR. 19, 1985. EPA APPROVED CROWN'S PLAN FOR FUTURE USE OF THE WELL ON JULY 11, 1986. THIS APPROVAL REQUIRED MONITORING TO ASSURE THAT NO FLUID MOVEMENT INTO A USDW COULD OCCUR AND TO REPORT TO EPA IF CONDITIONS EXIST WHICH WOULD ALLOW FLUID MOVEMENT IN- TO A USDW TO OCCUR AND TO COMPLETE APPROPRIATE CORRECTIVE ACTIONS IF SUCH CONDITIONS OCCUR. RESPONDENT ASSUMED OWNERSHIP OF THE WELL ON JAN. 1, 1990. RESPONDENT INDICATED IT'S INTENT TO