ON OR ABOUT 06/05/92 THE EPA SENT A LETTER TO RESPONDENT STATING THAT THE EPA HAD DETERMINED THAT WASTES GENERATED FROM 5X28 FACILITIES ARE HARMFUL TO THE ENVIRONMENT, DANGEROUS TO GROUND WATER, AND POTENTIALLY CLASSIFIABLE AS HAZARDOUS WASTE. THE LETTER REQUIRED THAT THE RESPONDENT DISCONTINUE USE OF THE PRESENT DISPOSAL SYSTEM BY ONE OF THE PRESCRIBED METHODS OR APPLY FOR A UIC PERMIT. A REMINDER WAS SENT 09/19/91. RESPONDENT HAS FAILED TO SUBMIT TO EPA A COMPLETED PERMIT APPLICATION, A PLAN FOR RETROFITTING OR PLUGGING THE DRAINS, OR ALTERNATIVE DISPOSAL PLANS.