NATURE OF THE CASE: J&L STEEL CORP & ITS CORPORATE PARENTS & CO-DEF'S J&L INDUSTRIES, INC & THE LTV CORP HAVE VIOL'D THE TERMS OF A 3/25/81 CD. THAT CD, TO WHICH THE US & ALLEGHENY CTY, PA ARE PARTIES, ADDRESSES ENVIRONMENTAL PROBLEMS AT THE DEF'S PITT'S & ALIQUIPPA, PA STEELMAKING PLANTS. THE CD, ENTERED 3/25/81, BY JUDGE BLOCK OF THE US DIST CT FOR THE WESTERN DIST OF PA, COMMITTED THE DEF'S TO INSTALL AIR POLLUTION CONTROL EQUIPMENT, IMPLEMENT OTHER AIR POLLUTION CONTROL MEASURES & ACHIEVE & DEMONSTRATE COMPLIANCE AT VARIOUS EMIS- SIONS SOURCES LOCATED AT DEF'S PITT'S & ALIQUIPPA WORKS. THE CD ALSO ADDRESSED WATER POLLUTION CONTROL BUT THIS REQUEST FOR ENFORCEMENT OF THE CD ONLY CONCERNS THE DECREE'S AIR POLLUTION ASPECTS. CAUSE OF ACTION: W/RESPECT TO THE ALIQUIPPA, PA STEELMAKING PLANT, DEF'S FAILED TO PLACE PURCHASE ORDERS BY 9/2/80 FOR PUSHING EMIS- SION CONTROLS FOR THEIR A-1 COKE OVEN BATTERY. THEY ALSO FAILED TO INITIATE ONSITE INSTALLATION OF THE CONTROLS BY 3/15/81 & TO COMPLETE CONSTR & DEMOSTRATE COMPLIANCE BY 2/15/82 & 3/15/82 RESPECTIVELY. DEF'S FAILED TO ACHIEVE & DEMONSTRATE COMPLIANCE W/EMISSION STANDARDS AT THEIR BOILERS NOS 59 & 60 INTHE ALIQUIPPA PLANT'S NO 6 NORTH MILLS BOILER HOUSE BY 1/5/81. FURTHER MORE, DEF'S FAILED TO ACHIEVE & DEMONSTRATE COMPLIANCE W/EMISSION STAN