RESPONDENT IS THE OWNER OF GRIEPENTROG'S SERVICE, A RETAIL GASOLINE FACILITY IN BROWN DEER. ON AUGUST 4, 1997, AN EPA INSPECTION WAS CONDUCTED AT GRIEPENTROG'S RETAIL GASOLINE FACILITY LOCATED AT 4685 W. BRADLEY RD., BROWN DEER, WI. THIS INSPECTION DETERMINED THAT 92 OCTAN GASOLINE HAVING AN RVP OF 11.81 PSI WAS BEING SOLD OR OFFERED FOR SALE AT THE TIME OF THE INSPECTION. THE GASOLINE VOLATILITY STANDARD FOR THAT PLACE AND DATE WAS 8.3 PSI. THEIS CONSTITUTES A VIOLATION OF 40 CFR SECTION 80.78(A)(1). UPON NOTIFICATION OF THE PROBABLE VIOLATION, ON AUGUST 4, 1997, RESPONDENT STOPPED SALES FROM HIS 92 OCTAN PUMP UNTIL SEPTEMBER 15, 1997 (THE CLOSE OF THE SUMMER RVP CONTROL PERIOD). THIS FACILITY WILL RESUPPLY ALL GRADES TO ENSURE THAT ON JUNE 1 OF EACH VOLATILITY SEASON HEREAFTER THE VOLATILITY OF THE GASOLINE BEING SOLD AND OFFERED FOR SALE IS WITHIN THE REQUIRED LIMITS FOR VOLATILITY.