NATURE OF THE CASE: ASSOCIATED ELECTRIC COOPERATIVE( AECI ) IS A NON- PROFIT, RURAL ELECTRIC COOPERATIVE THAT OPERATES AN ELEC- TRIC POWER GENERATING PLANT (CONSISTING OF UNIT 1 & UNIT 2) IN NEW MADRID, MISSOURI. THIS IS A CIVIL ACTION TO EN- FORCE MISSOURI REGULATION S-VI, MAXIMUM ALLOWABLE EMIS- SIONS OF PARTICULATE MATTER FROM FUEL BURNING EQUIPMENT USED IN INDIRECT HEATING , WHICH IS PART OF THE MO SIP. CAUSE OF ACTION: ON 9/12/78 EPA ISSUED AECI A NOTICE OF VIOL PURSUANT TO THE CAA, CITING AECI W/VIOL'S OF REGULATION S-VI. THE VIOL'S WERE DETERMINED FROM EMISSION TESTING CONDUCTED ON 5/31, 6/1 & 6/2/78. THE EPA REGN STAFF CONCLUDED THAT UNIT 2 WOULD CONTINUE TO OPERATE IN VIOL UNTIL AECI COM- PLETED MOD'S TO THE ELECTROSTATIC PERCIPITATOR MODULES. PROPOSED REMEDY: MAKE THE NECESSARY MOD'S & TO ACHIEVE & DEMONSTRATE COM- PLIANCE W/I A TIME SPECIFIED IN THE CD. THE CD WAS LODGED W/THE COURT ON 3/2/82. ISSUES OF NATIONAL SIGNIFICANCE: NONE.