NATURE OF THE CASE: J&L STEEL & ITS CORP PARENTS & CO-DEF'S J&L INDUSTRIES, INC & THE LTV CORP HAVE VIOL'D THE TERMS OF A 3/25/82 CD. THAT CD, TO WHICH THE US & ALLEGHENY CTY, PA ARE PARTIES, ADDRESSES ENVIRONMENTAL PROBLEMS AT THE DEF'S PITT'S & ALI- QUIPPA, PA STEELMAKING PLANTS. THE CD, ENTERED ON 3/25/81, BY JUDGE ALAN N. BLOCK OF THE US DISTRICT COURT FOR THE WESTERN DISTRICT OF PA, COMMITTED THE DEF'S TO INSTALL AIR POLLUTION CONTROL MEASURES & ACHIEVE & DEMONSTRATE COMPLI- ANCE AT VARIOUS EMISSIONS SOURCES LOCATED AT DEF'S PITT'S & ALIQUIPPA WORKS. THE DECREE ALSO ADDRESSED WATER POLLUTION CONTROL BUT THIS REQUEST FOR ENFORCEMENT OF THE CD ONLY CON- CERNS THE DECREE'S AIR POLLUTION ASPECTS. CAUSE OF ACTION: W/RESPECT TO THE PITT'S PA STEELMAKING PLANT, DEF'S FAILED TO ACHIEVE & DEMONSTRATE COMPLIANCE W/THE MASS EMIS- SION STANDARD FOR PUSHING P-1, P-2, P-3N, P-3S, P-4 & THE VISABLE EMISSION STANDARD FOR PUSHING ON BATTERIES P-3N, P-3S & P-4 BY 4/1/82. THEY ALSO FAILED TO OPERATE THEIR COKE OVEN GAS DESULFURIZATION FACILITY IN COMPLIANCE W/EMISSION STANDARDS BY 4/25/81, & FAILED TO OPERATE THE BOILERS IN THEIR SOUTHSIDE & BY-PRODUCTS BOILER HOUSES IN COMPLIANCE W/EMISSIONS STANDARDS BY 4/25/81. THE ENVIRONMENTAL IMPACT OF THESE FAILURES IS SIGNIFICANT BECAUSE A NEARBY SO2 MONI- TOR STATION SHOWED READINGS BELOW THE