| TPY | facn | facility | location |
| 1) | 2076.5 | 0701000007 | DP&L, J.M. STUART GENERATING STATION | ABERDEEN |
| 2) | 1511.2 | 0641160017 | W. H. SAMMIS PLANT | STRATTON |
| 3) | 1501.6 | 1431350093 | CINERGY CORP MIAMI FORT STATION | NORTH BEND |
| 4) | 1430.4 | 1409010006 | AK STEEL CORPORATION | MIDDLETOWN |
| 5) | 1222.0 | 1413100008 | CINERGY CG&E WC BECKJORD STATION | NEW RICHMOND |
| 6) | 899.1 | 0627000003 | OHIO VALLEY ELECTRIC CORP., KYGER CREEK STATION | CHESHIRE |
| 7) | 708.6 | 0616000000 | CONESVILLE POWER PLANT | CONESVILLE |
| 8) | 647.8 | 0145020185 | OWENS CORNING | NEWARK |
| 9) | 636.8 | 0829700165 | CEMEX, INC. | XENIA |
| 10) | 575.7 | 0320010001 | GMC POWERTRAIN DIV. | DEFIANCE |
| 11) | 565.7 | 0684000000 | MUSKINGUM RIVER POWER PLANT | WATERFORD |
| 12) | 540.9 | 0684020006 | ERAMET MARIETTA, INC. | MARIETTA |
| 13) | 525.7 | 0641050002 | CARDINAL POWER PLANT (CARDINAL OPERATING COMPANY) | BRILLIANT |
| 14) | 466.1 | 0278000463 | WCI STEEL, INC. | HOWLAND/WEATHERSFIELD/WARREN |
| 15) | 459.2 | 0627010056 | GAVIN POWER PLANT | CHESHIRE |
| 16) | 424.2 | 0243160009 | CLEVELAND ELECTRIC ILLUMINATING CO., EASTLAKE PLANT | EASTLAKE |
| 17) | 402.1 | 0448020006 | TOLEDO EDISON CO., BAY SHORE PLANT | OREGON |
| 18) | 399.8 | 0656000001 | ORMET PRIMARY ALUMINUM CORP. | HANNIBAL |
| 19) | 372.7 | 1318120180 | FORD MOTOR COMPANY, CLEVELAND CASTING PLANT | BROOK PARK |
| 20) | 362.2 | 0671010028 | CHILLICOTHE PAPER INC. | CHILLICOTHE |
| 21) | 357.3 | 0641090010 | WHEELING-PITTSBURGH STEEL CORPORATION - STEUBENVILLE | STEUBENVILLE |
| 22) | 335.9 | 1413090154 | CINCINNATI GAS & ELECTRIC CO., WM. H. ZIMMER | MOSCOW |
| 23) | 323.6 | 0684020037 | R. H. GORSUCH STATION | MARIETTA |
| 24) | 319.8 | 0448020007 | BP PRODUCTS NORTH AMERICA INC | OREGON |
| 25) | 312.1 | 0302020012 | PREMCOR REFINING GROUP | LIMA |
| 26) | 305.8 | 0247030013 | AVON LAKE POWER PLANT | AVON LAKE |
| 27) | 299.1 | 0487010012 | PILKINGTON NORTH AMERICA INC | ROSSFORD |
| 28) | 296.7 | 0247080229 | REPUBLIC ENGINEERED PRODUCTS, INC | LORAIN |
| 29) | 278.6 | 0362000079 | GRAYMONT DOLIME (OH), INC. | GENOA |
| 30) | 275.3 | 0372000081 | CARMEUSE LIME INC MILLERSVILLE OPERATIONS | MILLERSVILLE |
| 31) | 267.3 | 0448010246 | SUN COMPANY, INC. | OREGON |
| 32) | 240.6 | 0317010115 | NATIONAL LIME & STONE COMPANY | BUCYRUS |
| 33) | 239.0 | 1318001613 | ISG CLEVELAND INC. | CLEVELAND |
| 34) | 236.7 | 0320010003 | JOHNS MANVILLE INTERNATIONAL INC. - DEFIANCE PLANT 2 | DEFIANCE |
| 35) | 229.7 | 0363000002 | LAFARGE/SYSTECH ENVIRONMENTAL CORP. | PAULDING |
| 36) | 210.9 | 0326000160 | SAUDER WOODWORKING | ARCHBOLD |
| 37) | 188.8 | 0320010005 | JOHNS MANVILLE INTERNATIONAL, INC. | DEFIANCE |
| 38) | 185.5 | 1318000245 | CLEVELAND ELECTRIC ILLUMINATING CO., LAKE SHORE PLANT | CLEVELAND |
| 39) | 176.4 | 0285020059 | MORTON SALT DIVISION OF MORTON INTERNATIONAL, INC. | RITTMAN |
| 40) | 164.1 | 0607130015 | R. E. BURGER PLANT | SHADYSIDE |
| 41) | 156.8 | 0320010004 | SHUT D - JOHNS MANVILLE INTERNATIONAL, INC. - PLANT 3 | DEFIANCE |
| 42) | 147.1 | 1652050040 | OWENS CORNING, MEDINA PLANT | MEDINA |
| 43) | 134.8 | 1576000613 | THE TIMKEN COMPANY - STEEL PLANTS | CANTON |
| 44) | 134.2 | 0857780013 | DP&L, O.H. HUTCHINGS GENERATING STATION | MIAMISBURG |
| 45) | 130.0 | 1318270383 | HYDRAULIC PRESS BRICK | INDEPENDENCE |
| 46) | 126.0 | 0388000043 | NATIONAL LIME AND STONE COMPANY - CAREY, OH LIME PLANT | CAREY |
| 47) | 121.3 | 0388000004 | NATIONAL LIME & STONE CO. - CAREY | CAREY |
| 48) | 120.9 | 0701000060 | DP&L, KILLEN GENERATING STATION | MANCHESTER |
| 49) | 117.8 | 0448010075 | TEXTILEATHER CORPORATION | TOLEDO |
| 50) | 115.8 | 0285020076 | CARAUSTAR INDUSTRIES, INC. | RITTMAN |
| 51) | 114.1 | 0204010003 | ELKEM METALS COMPANY | ASHTABULA |
| 52) | 112.0 | 0448000012 | JOHNS MANVILLE INTERNATIONAL, INC. / PLANT #01 - WTV1 | WATERVILLE |
| 53) | 109.5 | 0322010062 | HURON LIME COMPANY | HURON |
| 54) | 107.3 | 0204010000 | CLEVELAND ELECTRIC ILLUMINATING CO., ASHTABULA PLANT | ASHTABULA |
| 55) | 107.2 | 0616010001 | STONE CONTAINER CORP.- COSHOCTON | COSHOCTON |
| 56) | 103.0 | 1576050614 | THE TIMKEN COMPANY - BEARING PLANTS | CANTON |
| 57) | 100.1 | 0374000010 | CARMEUSE OHIO, INC. - MAPLEGROVE LIME PLANT | BETTSVILLE |
| 58) | 93.0 | 0278060023 | NILES PLANT | NILES |
| 59) | 90.7 | 0124010098 | YUSA CORPORATION | WASHINGTON COURT HOUSE |
| 60) | 90.0 | 0278000199 | GENERAL MOTORS LORDSTOWN COMPLEX - LORDSTOWN EAST PLANT | WARREN |
| 61) | 87.6 | 1576010014 | ALLIANCE CASTING CO. LLC | ALLIANCE |
| 62) | 86.7 | 0381000011 | BUNGE NORTH AMERICA | DELPHOS |
| 63) | 85.4 | 0302020015 | INNOVENE USA LLC | LIMA |
| 64) | 84.7 | 0684010011 | KRATON POLYMERS U.S. LLC | BELPRE |
| 65) | 84.2 | 0326000073 | NORTH STAR BHP STEEL L. L. C. | DELTA |
| 66) | 83.2 | 0204010193 | MILLENNIUM INORGANIC CHEMICALS, INC. - PLANT 2 | ASHTABULA |
| 67) | 81.1 | 0125100987 | GRIFFIN WHEEL CO. - COLUMBUS PLANT | GROVEPORT |
| 68) | 78.8 | 0278000648 | ISG WARREN INC. | CLEVELAND |
| 69) | 78.6 | 0285010001 | THE QUALITY CASTINGS COMPANY | ORRVILLE |
| 70) | 78.6 | 1677010193 | GOODYEAR TIRE & RUBBER CO. | AKRON |
| 71) | 74.5 | 0448010023 | NABISCO, INC., TOLEDO FLOUR MILL | TOLEDO |
| 72) | 73.5 | 0660010007 | OWENS BROCKWAY GLASS CONTAINERS - PLANT #12 | ZANESVILLE |
| 73) | 72.4 | 0666010033 | MILL'S PRIDE, INC. | WAVERLY |
| 74) | 69.7 | 0448000013 | JOHNS MANVILLE - WATERVILLE 07 | WATERVILLE |
| 75) | 67.4 | 0374000022 | CHURCH & DWIGHT CO. | OLD FORT |