A GAS COLLECTION SYSTEMS AT THE H & R LANDFILL STOPPED FUNCTIONING WHICH LED TO THE DETECTION OF EXPLOSIVE CON- CENTRATIONS OF METHANE GAS WITHIN 30 FEET OF RESIDENTIAL PROPERTIES. USEPA ISSUED 7003 TO ORDER PROCTER AND GAMBLE TO IMMEDIATELY REPAIR THE GAS COLLECTION SYSTEM. THE H & R LANDFILL CLOSED IN 1984. FROM 1972 THROUGH 1984, P & G SENT PAPER MILL WASTES TO THE LANDFILL, WHICH IS NOW OWNED BY AN INSOLVENT CORPORATION. IN 1988, THE WDNR INSTALLED A METHANE GAS EXTRACTION SYSTEM AT THE LANDFILL AND ENTERED IN A SETTLEMENT WITH THE LANDFILL OWNERS AND P & G. OVER THE YEARS SINCE, THE STATE HAS MONITORED THE LANDFILL. IN MAY 2000, WDNR NOTIFIED REGION 5 THAT IT HAD DETECTED SUB- SURFACE METHANE GAS OFFSITE WITHIN 30 FEET OF OCCUPIED RESIDENTIAL PROPERTIES. EPA CONFIRMED THE WDNR SAMPLING RESULTS AND INSTALLED METHANE MONITORS IN THE BASEMENTS OF THE RESIDENCES. THE CITY OF GREEN BAY AND WDNR REPAIRED A PUMP IN THE GAS EXTRACTION SYSTEM WHICH SEEMED TO ADDRESS THE PROBLEM. HOWEVER, IN THE SPRING OF 2001 METHANE GAS CONCENTRATIONS RETURNED TO THE MAY 2000 LEVELS MAKING IT CLEAR THAT REPAIR OF THE PUMP ALONE WOULD NOT ADDRESS THE ISSUE. SINCE THE STATE SETTLEMENT WITH P & G PROBABLY PRECLUDED THE STATE FROM REQUIRING ADDITIONAL WORK FROM P & G, REGION 5 AGREED TO ISSUE THE 7003 ORDER. BASED ON PRE-ISSUANCE NEGOTIATIONS WITH P & G, REGION 5 EXPECTS THAT P & G, REGION 5 EXPECTS THAT P & G W