751 facilities in Pennsylvania (emissions)
| 51521 | 420690935 | ZAPCO ENERGY TACTICS/GAS TO EL | Lackawanna | ( 2) |
| 50860 | 420110090 | YUASA BATTERY INC/LAURELDALE | Berks | ( 1) |
| 52283 | 421190418 | YORKTOWNE INC/IND PARK PLT | Union | ( 1) |
| 52496 | 421330011 | YORKTOWN PAPER BOARD/SPRING GA | York | ( 1) |
| 52515 | 421330037 | YORK INTL CORP/GRANTLEY | York | ( 1) |
| 52519 | 421330040 | YORK HOSP/YORK CITY | York | ( 1) |
| 52533 | 421330062 | YORK GROUP INC/BLACK BRIDGE RD | York | ( 1) |
| 52544 | 421330073 | YORK CNTY SOLID WASTE/YORK CNT | York | ( 3) |
| 52530 | 421330061 | YORK CITY SEWER AUTH/YORK CITY | York | ( 3) |
| 51108 | 420290029 | WYETH PHARMACEUTICALS/WEST CHE | Chester | ( 2) |
| 51946 | 420910529 | WYETH PHARMACEUTICALS/COLLEGEV | Montgomery | ( 3) |
| 52328 | 421250001 | WORLD KITCHEN INC/CHARLEROI | Washington | ( 2) |
| 51185 | 420350012 | WOOLRICH INC/WOOLRICH PLT | Clinton | ( 1) |
| 52232 | 421090001 | WOOD MODE INC/KREAMER PLT | Snyder | ( 4) |
| 52133 | 4210108927 | WISTAR INSTITUTE | Philadelphia | ( 4) |
| 50700 | 4200300885 | WINTHROP MANAGEMENT - US STEEL | Allegheny | ( 1) |
| 51762 | 420810980 | WILLIAMSPORT HOSP/WILLIAMSPORT | Lycoming | ( 2) |
| 50902 | 420112001 | WILLIAMS METALFINISHING/SINKIN | Berks | ( 1) |
| 52351 | 421251035 | WILLIAM H MARTIN INC/ARDEN LDF | Washington | ( 1) |
| 50783 | 420070044 | WHEMCO FOUNDRY/MIDLAND | Beaver | ( 2) |
| 52330 | 421250002 | WHEELING PGH STEEL/ALLENPORT | Washington | ( 3) |
| 50965 | 420170469 | WHEELABRATOR FALLS INC/FALLS T | Bucks | ( 2) |
| 51799 | 420850019 | WHEATLAND TUBE DIV/SHARON PLT | Mercer | ( 1) |
| 51818 | 420850332 | WHEATLAND TUBE CO DI/WHEATLAND | Mercer | ( 2) |
| 51379 | 420470005 | WEYERHAEUSER/JOHNSONBURG MILL | Elk | ( 5) |
| 51805 | 420850026 | WERNER CO/GREENVILLE | Mercer | ( 7) |
| 51630 | 420750038 | WEABER INC/SOUTH ANNVILLE TWP | Lebanon | ( 1) |
| 52061 | 420970039 | WATSONTOWN BRICK CO/WATSONTOWN | Northumberland | ( 4) |
| 50977 | 420170583 | WASTE MGMT PA/TULLYTOWN RES RE | Bucks | ( 1) |
| 51415 | 420490506 | WASTE MGMT PA/LAKE VIEW LANDFI | Erie | ( 5) |
| 51939 | 420910485 | WASTE MGMT DSPL SVC /POTTSTOWN | Montgomery | ( 5) |
| 51017 | 420190606 | WASTE MGMT DSPL SVC /NORTHWEST | Butler | ( 1) |
| 50964 | 420170408 | WASTE MGMT DSPL SVC /GROWS LDF | Bucks | ( 1) |
| 51445 | 420550621 | WASTE MGMT DSPL SVC /DBA MTN V | Franklin | ( 1) |
| 52259 | 421170019 | WARD MFG INC/BLOSSBURG PLTS 1- | Tioga | ( 1) |
| 51299 | 420450021 | VILLANOVA UNIV/MAIN CAMPUS | Delaware | ( 1) |
| 52065 | 420970144 | VIKING ENERGY NORTHUMBERLAND/C | Northumberland | ( 1) |
| 52015 | 420950055 | VICTAULIC CO AMER/FORKS FACILI | Northampton | ( 2) |
| 50664 | 4200300240 | VALLEY PROTEINS (PA), INC. | Allegheny | ( 1) |
| 50706 | 4200300912 | VA MEDICAL CENTER - OAKLAND FA | Allegheny | ( 2) |
| 50656 | 4200300221 | VA MEDICAL CENTER - HIGHLAND D | Allegheny | ( 3) |
| 50624 | 4200300202 | USS CORPORATION - EDGAR THOMSO | Allegheny | ( 16) |
| 50515 | 4200300032 | USS - CLAIRTON WORKS | Allegheny | ( 40) |
| 51920 | 420910182 | USAF/WILLOW GROVE AIR RESERVE | Montgomery | ( 2) |
| 52450 | 421290168 | USA VALLEY FAC INC/VALLEY LDFL | Westmoreland | ( 1) |
| 51160 | 420292028 | US VETERANS ADMIN/COATESVILLE | Chester | ( 1) |
| 50640 | 4200300203 | US STEEL CORPORATION - IRVIN P | Allegheny | ( 14) |
| 50951 | 420170055 | US STEEL CORP/FAIRLESS HILLS | Bucks | ( 2) |
| 51456 | 420610010 | US SILICA/MAPLETON DEPOT PLT | Huntingdon | ( 1) |
| 51546 | 420710049 | US LOCK & HDWR CO/COLUMBIA | Lancaster | ( 1) |
| 50790 | 420070165 | US GYPSUM CO/ALIQUIPPA | Beaver | ( 4) |
| 52280 | 421190008 | US DOJ/US PENITENTIARY LEWISBU | Union | ( 3) |
| 51437 | 420550006 | US DEPT OF DEFENSE/LETTERKENNY | Franklin | ( 2) |
| 51944 | 420910490 | US DEPT NAVY/NAVAL AIR STA JNT | Montgomery | ( 2) |
| 51829 | 420890008 | US DEPT DEFENSE/TOBYHANA ARMY | Monroe | ( 1) |
| 51199 | 420390006 | US BRONZE FOUNDRY & /US BRONZE | Crawford | ( 2) |
| 51235 | 420410322 | US ARMY/CARLISLE BARRACKS | Cumberland | ( 1) |
| 50685 | 4200300360 | US AIRWAYS MAINTENANCE BASE | Allegheny | ( 4) |
| 51972 | 420911000 | URSINUS COLL/COLLEGEVILLE | Montgomery | ( 2) |
| 51394 | 420490007 | URICK FOUNDRY CO/ERIE | Erie | ( 1) |
| 50668 | 4200300258 | UPMC SHADYSIDE | Allegheny | ( 1) |
| 50514 | 4200300028 | UPMC MAGEE HOSPITAL | Allegheny | ( 1) |
| 50703 | 4200300907 | UPMC - OAKLAND CAMPUS | Allegheny | ( 3) |
| 52129 | 4210108912 | UNIVERSITY OF PENNSYLVANIA | Philadelphia | ( 1) |
| 50490 | 4200300003 | UNIVERSAL STAINLESS & ALLOY PR | Allegheny | ( 2) |
| 50682 | 4200300335 | UNIV OF PITT APPLIED RESEARCH | Allegheny | ( 1) |
| 52147 | 4210109703 | UNITED STATES MINT | Philadelphia | ( 4) |
| 52303 | 421230003 | UNITED REFINING CO/WARREN PLT | Warren | ( 21) |
| 52514 | 421330034 | UNITED DEFENSE LTD P/YORK | York | ( 1) |
| 50884 | 420110473 | UNITED CORRSTACK LLC/READING | Berks | ( 1) |
| 51864 | 420910045 | UNISYS CORP/BLUE BELL | Montgomery | ( 1) |
| 52346 | 421250026 | UNION ELEC STEEL CORP/HARMON C | Washington | ( 3) |
| 51720 | 420790014 | UGI DEVELOPMENT CO/HUNLOCK POW | Luzerne | ( 3) |
| 51915 | 420910177 | TYCO HEALTHCARE RETAIL GROUP/F | Montgomery | ( 1) |
| 50698 | 4200300774 | TUBE CITY, INC. | Allegheny | ( 1) |
| 50623 | 4200300199 | TRUMBULL CORPORATION | Allegheny | ( 1) |
| 51702 | 420770590 | TRIQUINT OPTOELECTRONICS INC | Lehigh | ( 2) |
| 52198 | 421050006 | TRANSCONTINENTAL GAS/WHARTON S | Potter | ( 10) |
| 52520 | 421330053 | TRANSCONTINENTAL GAS/STATION 1 | York | ( 5) |
| 51748 | 420810036 | TRANSCONTINENTAL GAS/SALLADASB | Lycoming | ( 7) |
| 51195 | 420370031 | TRANSCONTINENTAL GAS/JACKSON T | Columbia | ( 4) |
| 51123 | 420290047 | TRANSCONTINENTAL GAS/FRAZER ST | Chester | ( 12) |
| 51734 | 420790058 | TRANSCONTINENTAL GAS/BEAR CREE | Luzerne | ( 1) |
| 52362 | 421290017 | TIMKEN LATROBE STEEL CO/LATROB | Westmoreland | ( 9) |
| 52350 | 421250896 | THERM O ROCK INC/NEW EAGLE PLT | Washington | ( 1) |
| 50622 | 4200300196 | THE LANE MCKEES ROCK ASPHALT P | Allegheny | ( 1) |
| 50489 | 4200300002 | THE LANE CONSTRUCTION BRIDGEVI | Allegheny | ( 1) |
| 52122 | 4210108069 | THE CHILDREN`S HOSPITAL OF PHI | Philadelphia | ( 7) |
| 52086 | 4210101564 | THE BUDD CO | Philadelphia | ( 2) |
| 52066 | 420990001 | TEXAS EASTERN TRANS/SHERMANS D | Perry | ( 1) |
| 51558 | 420710077 | TEXAS EASTERN TRANS/MARIETTA | Lancaster | ( 1) |
| 51264 | 420430027 | TEXAS EASTERN TRANS/GRANTVILLE | Dauphin | ( 4) |
| 50854 | 420110087 | TEXAS EASTERN TRANS/BERNVILLE | Berks | ( 1) |
| 50855 | 420110088 | TEXAS EASTERN TRANS/BECHTELSVI | Berks | ( 4) |
| 51489 | 420670003 | TEXAS EASTERN TRANS LP/PERULAC | Juniata | ( 5) |
| 51459 | 420610013 | TEXAS EASTERN TRANS LP/ENTRIKE | Huntingdon | ( 1) |
| 51453 | 420590364 | TEXAS EASTERN TRANS /WAYNESBUR | Greene | ( 1) |
| 51423 | 420510018 | TEXAS EASTERN TRANS /UNIONTOWN | Fayette | ( 2) |
| 51452 | 420590139 | TEXAS EASTERN TRANS /HOLBROOK | Greene | ( 1) |
| 52416 | 421290060 | TEXAS EASTERN TRANS /DELMONT | Westmoreland | ( 8) |
| 51475 | 420630079 | TEXAS EASTERN TRANS /ARMAGH ST | Indiana | ( 1) |
| 51031 | 420210024 | TEXAS EASTERN GAS PI/LILLY STA | Cambria | ( 4) |
| 51432 | 420530001 | TENNESSEE GAS PIPELINE CO/PIGE | Forest | ( 5) |
| 52256 | 421150007 | TENNESSEE GAS PIPELINE CO/COMP | Susquehanna | ( 3) |
| 50928 | 420150043 | TENNESSEE GAS PIPELINE CO/319 | Bradford | ( 2) |
| 50933 | 420150090 | TENNESSEE GAS PIPELINE CO/317 | Bradford | ( 2) |
| 52197 | 421050005 | TENNESSEE GAS PIPELINE CO/313 | Potter | ( 1) |
| 51949 | 420910592 | TENET HEALTH SYSTEM /ELKINS PA | Montgomery | ( 2) |
| 52119 | 4210108037 | TENET - MEDICAL COL. OF PA - M | Philadelphia | ( 1) |
| 51783 | 420830042 | TEMPLE INLAND FOREST/MT JEWETT | Mc_Kean | ( 4) |
| 51787 | 420830498 | TEMPLE INLAND FOREST/MT JEWETT | Mc_Kean | ( 9) |
| 51164 | 420310100 | TEMPLE INLAND FOREST/CLARION | Clarion | ( 6) |
| 51723 | 420790018 | TECHNEGLAS INC/PITTSTON | Luzerne | ( 2) |
| 50930 | 420150055 | TAYLOR PACKING CO INC/MEAT PAC | Bradford | ( 1) |
| 51351 | 420450170 | TAYLOR HOSP/RIDLEY PARK | Delaware | ( 1) |
| 51150 | 420290313 | TASTY BAKING/OXFORD PLT | Chester | ( 1) |
| 52067 | 4210101416 | T.D.P.S. MATERIALS, INC. | Philadelphia | ( 1) |
| 51360 | 420450838 | SWARTHMORE COLL/SWARTHMORE | Delaware | ( 2) |
| 52240 | 421090007 | SUSQUEHANNA UNIV/SELINSGROVE C | Snyder | ( 1) |
| 51861 | 420910040 | SUPERIOR TUBE CO/LOWER PROVIDE | Montgomery | ( 1) |
| 51283 | 420450010 | SUNOCO PARTNERS MKT & TERM LP/ | Delaware | ( 1) |
| 52069 | 4210101501 | SUNOCO INC. (R&M) | Philadelphia | ( 12) |
| 51300 | 420450025 | SUNOCO INC (R&M)/MARCUS HOOK R | Delaware | ( 10) |
| 52083 | 4210101551 | SUNOCO CHEMICALS (FORMER ALLIE | Philadelphia | ( 3) |
| 52059 | 420970020 | SUNBURY PROPERTY/KNIGHT CELOTE | Northumberland | ( 2) |
| 52236 | 421090002 | SUNBURY GENERATION LLC/SUNBURY | Snyder | ( 4) |
| 50555 | 4200300056 | SUN REFINING AND MARKETING, | Allegheny | ( 1) |
| 50872 | 420110170 | SUN PIPE LINE/MONTELLO PUMP ST | Berks | ( 1) |
| 52427 | 421290063 | SUMMERILL TUBE CORP/SCOTTDALE | Westmoreland | ( 1) |
| 52017 | 420950056 | STROEHMANN BAKERIES/PALMER | Northampton | ( 1) |
| 50861 | 420110097 | STROEHMANN BAKERIES LC/MAIERS | Berks | ( 2) |
| 51909 | 420910121 | STROEHMANN BAKERIES LC | Montgomery | ( 2) |
| 51280 | 420450002 | STONEY CREEK TECH/TRAINER | Delaware | ( 1) |
| 52547 | 421330074 | STI CAPITAL CO/SPRINGETTSBURY | York | ( 6) |
| 50879 | 420110370 | STERICYCLE INC/MORGANTOWN FACI | Berks | ( 1) |
| 52359 | 421290015 | STD STEEL/LATROBE | Westmoreland | ( 3) |
| 51827 | 420870003 | STD STEEL/BURNHAM | Mifflin | ( 2) |
| 50621 | 4200300183 | STATE CORRECTIONAL INSTITUTION | Allegheny | ( 1) |
| 51684 | 420770068 | STANLEY VIDMAR INC/STORAGE TEC | Lehigh | ( 1) |
| 52357 | 421290008 | ST VINCENT COLL/LATROBE CAMPUS | Westmoreland | ( 1) |
| 50979 | 420170865 | ST MARY MED CTR/LANGHORNE | Bucks | ( 2) |
| 51691 | 420770562 | ST LUKES HOSP/MAIN BOILER PLT | Lehigh | ( 1) |
| 51889 | 420910112 | SPS TECH INC/ABINGTON | Montgomery | ( 8) |
| 51975 | 420912055 | SPRAY PRODUCTS CORPORATION | Montgomery | ( 1) |
| 51467 | 420630014 | SPECIALTY TIRES AMER/INDIANA P | Indiana | ( 1) |
| 52255 | 421110952 | SOUTHERN ALLEGHENY L/SOUTHERN | Somerset | ( 1) |
| 52462 | 421290956 | SONY ELECTRONICS INC/NEW STANT | Westmoreland | ( 4) |
| 52466 | 421290957 | SONY CHEM CORP OF AM/PGH MFG C | Westmoreland | ( 1) |
| 51088 | 420290015 | SONOCO PROD CO/DOWNINGTOWN | Chester | ( 2) |
| 51477 | 420630094 | SOMERSET GAS TRANS/COOKPORT ST | Indiana | ( 2) |
| 52098 | 4210102051 | SMURFIT-STONE CONTAINER CORPOR | Philadelphia | ( 1) |
| 51736 | 420790064 | SILGAN CLOSURES LLC/ VALMONT F | Luzerne | ( 3) |
| 51056 | 420250100 | SILBERLINE MFG CO/LANSFORD PLT | Carbon | ( 2) |
| 50500 | 4200300022 | SHENANGO INC. | Allegheny | ( 8) |
| 51388 | 420470558 | SGL CARBON CORP/ST MARYS PLT | Elk | ( 1) |
| 50869 | 420110111 | SFS INTEC/WYOMISSING | Berks | ( 3) |
| 50804 | 420090359 | SETON/SAXTON PLT | Bedford | ( 1) |
| 50848 | 420110080 | SENSIENT COLORS INC/GIBRALTAR | Berks | ( 4) |
| 51020 | 420190920 | SENECA LANDFILL INC/SENECA | Butler | ( 1) |
| 51798 | 420850016 | SELECT IND INC/GREENVILLE-REYN | Mercer | ( 1) |
| 50892 | 420110637 | SEALED AIR CORP/READING PLT | Berks | ( 1) |
| 51152 | 420290791 | SEALED AIR CORP/MODENA | Chester | ( 1) |
| 52297 | 421210013 | SCRUBGRASS GENERATING CO LP/KE | Venango | ( 1) |
| 52217 | 421070024 | SCHUYLKILL ENERGY RES/ST NICHO | Schuylkill | ( 2) |
| 51137 | 420290056 | SARTOMER CO INC/WEST CHESTER | Chester | ( 2) |
| 52213 | 421070007 | SARA LEE /RUSH TWP PLT | Schuylkill | ( 1) |
| 51679 | 420770053 | SAPUTO CHEESE /WHITEHALL | Lehigh | ( 3) |
| 51156 | 420290900 | SANOFI SYNTHELABO INC/GREAT VA | Chester | ( 1) |
| 51804 | 420850023 | SALEM TUBE INC/SALEM TUBE INC | Mercer | ( 1) |
| 51112 | 420290042 | SAINT GOBAIN PERFORMANCE PLAST | Chester | ( 2) |
| 51778 | 420830006 | SAINT GOBAIN CONTAINERS/PORT A | Mc_Kean | ( 3) |
| 52116 | 4210108016 | SAINT AGNES HOSPITAL | Philadelphia | ( 1) |
| 51559 | 420710079 | RUTT HANDCRAFTED CABINETRY LLC | Lancaster | ( 1) |
| 51372 | 420451042 | RUBENSTEIN CO LP/RADNOR | Delaware | ( 1) |
| 51560 | 420710080 | RR DONNELLEY & SONS CO/NORTHEA | Lancaster | ( 4) |
| 51577 | 420710122 | RR DONNELLEY & SONS /NORTHEAST | Lancaster | ( 3) |
| 51586 | 420710317 | RR DONNELLEY & SONS /LANCASTER | Lancaster | ( 2) |
| 52081 | 4210101531 | ROHM & HAAS COMPANY | Philadelphia | ( 1) |
| 51862 | 420910041 | ROHM & HAAS CO/SPRINGHOUSE | Montgomery | ( 2) |
| 50939 | 420170009 | ROHM & HAAS CO/BRISTOL | Bucks | ( 1) |
| 51831 | 420890018 | ROCK TENN CO/DELAWARE WATER GA | Monroe | ( 2) |
| 52068 | 4210101421 | RIVERSIDE MATERIALS, INC. | Philadelphia | ( 1) |
| 51367 | 420450948 | RIDDLE MEM HOSP/BALT PIKE | Delaware | ( 1) |
| 52553 | 421330090 | RH SHEPPARD CO INC/HANOVER | York | ( 1) |
| 51115 | 420290046 | REYNOLDS METALS CO/DOWNINGTOWN | Chester | ( 8) |
| 52556 | 421330528 | REPUBLIC SVC GROUP O/MODERN LD | York | ( 4) |
| 51173 | 420330021 | RELIANT ENERGY/SHAWVILLE GENER | Clearfield | ( 4) |
| 51466 | 420630002 | RELIANT ENERGY/SEWARD POWER PL | Indiana | ( 1) |
| 51988 | 420950011 | RELIANT ENERGY/PORTLAND GENERA | Northampton | ( 2) |
| 50715 | 420050012 | RELIANT ENERGY/KEYSTONE POWER | Armstrong | ( 5) |
| 50488 | 420010876 | RELIANT ENERGY MID ATLANTIC PO | Adams | ( 1) |
| 51206 | 420390518 | RELIANT ENERGY MID A/WAYNE COM | Crawford | ( 1) |
| 52324 | 421230004 | RELIANT ENERGY MID A/WARREN ST | Warren | ( 1) |
| 50839 | 420110045 | RELIANT ENERGY MID A/TITUS ELE | Berks | ( 2) |
| 51834 | 420890795 | RELIANT ENERGY MID A/SHAWNEE C | Monroe | ( 1) |
| 50478 | 420010017 | RELIANT ENERGY MID A/HUNTERSTO | Adams | ( 3) |
| 50487 | 420010869 | RELIANT ENERGY MID A/HAMILTON | Adams | ( 1) |
| 52272 | 421170100 | RELIANT ENERGY MID A/BLOSSBURG | Tioga | ( 1) |
| 50590 | 4200300122 | REICHHOLD, INC. | Allegheny | ( 3) |
| 50659 | 4200300222 | REDLAND BRICK INC. - HARMAR PL | Allegheny | ( 2) |
| 51843 | 420910013 | READING MATERIALS/SANATOGA QUA | Montgomery | ( 1) |
| 50841 | 420110066 | READING HOUSING AUTH/OAKBROOK | Berks | ( 1) |
| 50859 | 420110089 | READING BODY WORKS I/READING | Berks | ( 1) |
| 50485 | 420010557 | RAVEN ROCK MTN COMPLEX/SITE R | Adams | ( 2) |
| 51664 | 420770027 | RANSOM IND LP/MACUNGIE | Lehigh | ( 3) |
| 52358 | 421290012 | RANBAR ELEC MATERIALS/MANOR PR | Westmoreland | ( 1) |
| 50958 | 420170285 | R3 TECH INC/FAIRLESS HILLS | Bucks | ( 1) |
| 51409 | 420490038 | QUIN T CORP/16TH ST PLT | Erie | ( 1) |
| 51082 | 420290009 | QUEBECOR WORLD INC/ATGLEN | Chester | ( 5) |
| 50481 | 420010021 | QUEBECOR WORLD FAIRF/FAIRFIELD | Adams | ( 1) |
| 51635 | 420750555 | QUAKER ALLOY INC/MYERSTOWN | Lebanon | ( 4) |
| 52208 | 421050007 | PURE CARBON CO/MORGAN ADV MAT | Potter | ( 1) |
| 52467 | 421310009 | PROCTER & GAMBLE PAPER PROD CO | Wyoming | ( 20) |
| 50662 | 4200300228 | PRECOAT METALS, A DIV. OF SEQU | Allegheny | ( 2) |
| 51885 | 420910090 | PRECISION TUBE COMPANY | Montgomery | ( 1) |
| 51294 | 420450017 | PQ CORP/CHESTER | Delaware | ( 5) |
| 51237 | 420410494 | PPL MARTINS CREEK LLC/WEST SHO | Cumberland | ( 2) |
| 51982 | 420950010 | PPL MARTINS CREEK LLC/MARTINS | Northampton | ( 6) |
| 51740 | 420790798 | PPL MARTINS CREEK LLC/JENKINS | Luzerne | ( 2) |
| 51739 | 420790597 | PPL MARTINS CREEK LLC/HARWOOD | Luzerne | ( 1) |
| 51274 | 420430209 | PPL MARTINS CREEK LLC/HARRISBU | Dauphin | ( 4) |
| 52221 | 421070598 | PPL MARTINS CREEK LLC/FISHBACH | Schuylkill | ( 2) |
| 51687 | 420770544 | PPL MARTINS CREEK LLC/ALLENTOW | Lehigh | ( 4) |
| 51742 | 420810005 | PPL MARTINS CREEK LL/WILLIAMSP | Lycoming | ( 2) |
| 51370 | 420451010 | PPL INTERSTATE ENERGY/MARCUS H | Delaware | ( 2) |
| 51213 | 420410013 | PPG IND INC/WORKS NO 6 | Cumberland | ( 5) |
| 51202 | 420390012 | PPG IND INC/WORKS 8 | Crawford | ( 2) |
| 51974 | 420912002 | POTTSTOWN MEM MED CTR/POTTSTOW | Montgomery | ( 1) |
| 51509 | 420690125 | POLY HI SOLIDUR INC/SCRANTON P | Lackawanna | ( 2) |
| 51523 | 420692115 | POLY HI SOLIDUR INC/KEYSER VLY | Lackawanna | ( 1) |
| 52446 | 421290081 | POLY HI SOLIDUR INC/DELMONT PL | Westmoreland | ( 1) |
| 50494 | 4200300009 | PITTSBURGH BREWING CO. PITTSB | Allegheny | ( 1) |
| 50557 | 4200300073 | PITTSBURGH ALLEGHENY COUNTY TH | Allegheny | ( 1) |
| 52223 | 421070889 | PINE GROVE LDFL INC/PINE GROVE | Schuylkill | ( 2) |
| 51157 | 420291019 | PHOENIXVILLE HOSP INC/PHOENIXV | Chester | ( 3) |
| 52138 | 4210109515 | PHILADELPHIA WATER DEPT. ( S W | Philadelphia | ( 5) |
| 52111 | 4210104921 | PHILADELPHIA GAS WORKS - PASSY | Philadelphia | ( 3) |
| 51923 | 420910234 | PHILA NEWSPAPER INC/SCHUYLKILL | Montgomery | ( 3) |
| 52499 | 421330016 | PH GLATFELTER CO/SPRING GROVE | York | ( 7) |
| 51764 | 420830002 | PGH CORNING CORP/PORT ALLEGANY | Mc_Kean | ( 2) |
| 51590 | 420710723 | PFIZER INC/LITITZ | Lancaster | ( 3) |
| 51597 | 420712119 | PEPPERIDGE FARM INC/EAST COCAL | Lancaster | ( 2) |
| 50996 | 420190015 | PENRECO/KARNS CITY | Butler | ( 6) |
| 50681 | 4200300332 | PENNSYLVANIA ELECTRIC COIL LTD | Allegheny | ( 1) |
| 51500 | 420690022 | PEI POWER CORP/ARCHBALD | Lackawanna | ( 2) |
| 52254 | 421110022 | PBS COAL INC/SHADE CREEK PLT | Somerset | ( 1) |
| 51879 | 420910067 | PALMER PROD INC/SKIPPACK | Montgomery | ( 1) |
| 52151 | 4210109715 | PAID BOILER STEAM PLANT | Philadelphia | ( 1) |
| 50853 | 420110084 | PACKAGING GROUP/BOYERTOWN PRIN | Berks | ( 1) |
| 51061 | 420270017 | PA STATE UNIV/UNIV PARK CAMPUS | Centre | ( 6) |
| 51078 | 420290003 | PA STATE SYS OF HIGHER ED/WEST | Chester | ( 2) |
| 50981 | 420190003 | PA STATE SYS OF HIGHER ED/SLIP | Butler | ( 2) |
| 51220 | 420410028 | PA STATE SYS OF HIGHER ED/SHIP | Cumberland | ( 4) |
| 50807 | 420110008 | PA STATE SYS OF HIGHER ED/KUTZ | Berks | ( 2) |
| 51468 | 420630018 | PA STATE SYS OF HIGHER ED/INDI | Indiana | ( 6) |
| 51188 | 420370002 | PA STATE SYS OF HIGHED ED/BLOO | Columbia | ( 2) |
| 52274 | 421190001 | PA HOUSE/LEWISBURG (EAST BUFFA | Union | ( 2) |
| 51726 | 420790035 | PA DPW/WHITE HAVEN CTR | Luzerne | ( 3) |
| 52333 | 421250004 | PA DPW/WESTERN STATE SCH & HOS | Washington | ( 2) |
| 50883 | 420110471 | PA DPW/WERNERSVILLE STATE HOSP | Berks | ( 1) |
| 52325 | 421230026 | PA DPW/WARREN STATE HOSP | Warren | ( 3) |
| 52371 | 421290029 | PA DPW/TORRANCE STATE HOSP | Westmoreland | ( 2) |
| 52241 | 421090008 | PA DPW/SELINSGROVE CTR | Snyder | ( 3) |
| 52289 | 421210006 | PA DPW/POLK CTR | Venango | ( 4) |
| 51836 | 420910007 | PA DPW/NORRISTOWN STATE HOSP | Montgomery | ( 2) |
| 51278 | 420430698 | PA DPW/HARRISBURG STATE HOSP | Dauphin | ( 1) |
| 50881 | 420110431 | PA DPW/HAMBURG CTR | Berks | ( 2) |
| 51087 | 420290011 | PA DPW/EMBREEVILLE CTR | Chester | ( 1) |
| 51976 | 420930004 | PA DPW/DANVILLE STATE HOSP | Montour | ( 2) |
| 51511 | 420690205 | PA DPW/CLARKS SUMMIT STATE HOS | Lackawanna | ( 1) |
| 51646 | 420770011 | PA DPW/ALLENTOWN STATE HOSP | Lehigh | ( 3) |
| 51632 | 420750387 | PA DEPT OF MILITARY /FT INDIAN | Lebanon | ( 3) |
| 51028 | 420210003 | PA DEPT OF LABOR & IND/HIRAM A | Cambria | ( 1) |
| 52352 | 421270773 | PA DEPT OF CORR/WAYMART SCI | Wayne | ( 1) |
| 51460 | 420610015 | PA DEPT OF CORR/SMITHFIELD SCI | Huntingdon | ( 1) |
| 51058 | 420270002 | PA DEPT OF CORR/ROCKVIEW SCI | Centre | ( 1) |
| 52244 | 421110003 | PA DEPT OF CORR/LAUREL HIGHLAN | Somerset | ( 1) |
| 51457 | 420610012 | PA DEPT OF CORR/HUNTINGDON SCI | Huntingdon | ( 2) |
| 51838 | 420910008 | PA DEPT OF CORR/GRATERFORD SCI | Montgomery | ( 3) |
| 51725 | 420790027 | PA DEPT OF CORR/DALLAS SCI | Luzerne | ( 1) |
| 51355 | 420450215 | PA DEPT OF CORR/CHESTER SCI | Delaware | ( 3) |
| 51207 | 420410003 | PA DEPT OF CORR/CAMP HILL SCI | Cumberland | ( 1) |
| 51413 | 420490153 | PA DEPT OF CORR/ALBION SCI | Erie | ( 1) |
| 52082 | 4210101534 | O` BRIEN COGENERATION INC. ( S | Philadelphia | ( 1) |
| 51161 | 420310009 | OWENS-BROCKWAY GLASS/CLARION | Clarion | ( 2) |
| 51481 | 420650003 | OWENS-BROCKWAY GLASS/BROCKWAY | Jefferson | ( 1) |
| 51482 | 420650007 | OWENS BROCKWAY GLASS/CRENSHAW | Jefferson | ( 2) |
| 52538 | 421330066 | OSRAM SYLVANIA PROD /YORK BASE | York | ( 1) |
| 52260 | 421170020 | OSRAM SYLVANIA PROD /WELLSBORO | Tioga | ( 2) |
| 50925 | 420150011 | OSRAM SYLVANIA PROD /HAWES STR | Bradford | ( 3) |
| 51886 | 420910102 | ORTHO MCNEIL PHARMACEUTICALS/L | Montgomery | ( 3) |
| 50677 | 4200300297 | ORION POWER MIDWEST, PHILLIPS | Allegheny | ( 1) |
| 51385 | 420470173 | ONYX GREENTREE LANDFILL | Elk | ( 3) |
| 52373 | 421290036 | OMNOVA SOLUTIONS INC/JEANETTE | Westmoreland | ( 3) |
| 52214 | 421070020 | OMNOVA SOLUTIONS INC/AUBURN PL | Schuylkill | ( 1) |
| 52298 | 421210982 | OMG AMER/SUGARCREEK TWP | Venango | ( 1) |
| 51865 | 420910058 | OCCIDENTAL CHEM CORP/POTTSTOWN | Montgomery | ( 10) |
| 51080 | 420290005 | NVF CO/KENNETT PLT | Chester | ( 2) |
| 51241 | 420430013 | NRG ENERGY CTR PAXTON LLC/NRG | Dauphin | ( 2) |
| 50689 | 4200300389 | NRG ENERGY CENTER PITTSBURGH | Allegheny | ( 4) |
| 50785 | 420070045 | NOVA CHEM CO/BEAVER | Beaver | ( 1) |
| 52219 | 421070054 | NORTHEASTERN POWER CO/MCADOO C | Schuylkill | ( 2) |
| 52102 | 4210103048 | NORTHEAST FOODS - PHILADELPHIA | Philadelphia | ( 1) |
| 52036 | 420950536 | NORTHAMPTON GEN CO/NORTHAMPTON | Northampton | ( 5) |
| 52045 | 420950568 | NORTHAMPTON CNTY/GRACEDALE CNT | Northampton | ( 1) |
| 52245 | 421110013 | NORTH AMERICAN HOGANAS INC/STO | Somerset | ( 4) |
| 50795 | 420071036 | NORFOLK SOUTHERN RAILWAY/CONWA | Beaver | ( 3) |
| 50903 | 420130005 | NORFOLK SOUTHERN RAILWAY CO/JU | Blair | ( 1) |
| 50910 | 420130020 | NORFOLK SOUTHERN RAILWAY CO/HO | Blair | ( 1) |
| 50794 | 420070167 | NGC IND/SHIPPINGPORT | Beaver | ( 1) |
| 52278 | 421190007 | NGC IND/MILTON PLT | Union | ( 2) |
| 50701 | 4200300889 | NEXTECH | Allegheny | ( 2) |
| 50893 | 420110820 | NEW MORGAN LDFL CO I/CONESTOGA | Berks | ( 1) |
| 50492 | 4200300008 | NEVILLE CHEMICAL COMPANY | Allegheny | ( 2) |
| 51674 | 420770035 | NESTLE PURINA/PETCARE PLT | Lehigh | ( 2) |
| 52152 | 4210109724 | NAVAL SURFACE WARFARE CENTER C | Philadelphia | ( 14) |
| 51236 | 420410329 | NAVAL SUPPORT ACTIVI/MECHANICS | Cumberland | ( 1) |
| 52146 | 4210109702 | NAVAL FOUNDRY AND PROPELLER CE | Philadelphia | ( 1) |
| 51883 | 420910083 | NATL LABEL CO/LAFAYETTE HILL | Montgomery | ( 2) |
| 52209 | 421050009 | NATL FUEL GAS SUPPLY/ELLISBURG | Potter | ( 3) |
| 50559 | 4200300092 | NATIONAL ENERGY TECHNOLOGY LAB | Allegheny | ( 1) |
| 51015 | 420190030 | NAPCO INC/VALENCIA | Butler | ( 1) |
| 51479 | 420650001 | NAC CARBON PRODUCTS INC/PUNXSU | Jefferson | ( 2) |
| 51761 | 420810979 | MUNCY VALLEY HOSPITAL/MUNCY VA | Lycoming | ( 1) |
| 50938 | 420170004 | MSC ENGINEERED MATERIALS GRP/M | Bucks | ( 1) |
| 51875 | 420910065 | MOYER PACKING CO/SOUDERTON REN | Montgomery | ( 4) |
| 50586 | 4200300114 | MOTIVA ENTERPRISES LLC | Allegheny | ( 2) |
| 51508 | 420690092 | MOSES TAYLOR HOSP/SCRANTON | Lackawanna | ( 1) |
| 51938 | 420910462 | MONTGOMERY CNTY GERIATRIC & RE | Montgomery | ( 1) |
| 51926 | 420910295 | MONTENAY MONTGOMERY /PLYMOUTH | Montgomery | ( 2) |
| 51414 | 420490503 | MOLDED FIBERGLASS CO/UNION CIT | Erie | ( 1) |
| 51016 | 420190078 | MINTEQ INTL/ZEDMARK DIV SLIPPE | Butler | ( 1) |
| 50931 | 420150068 | MILLS PRIDE PA/ATHENS TWP PLT | Bradford | ( 2) |
| 50943 | 420170024 | MILLER & SON PAVING /RUSHLAND | Bucks | ( 1) |
| 50911 | 420130022 | MILLENNIUM RAIL/HOLLIDAYSBURG | Blair | ( 2) |
| 50711 | 4200301031 | MID-CONTINENT COAL AND COKE | Allegheny | ( 1) |
| 51257 | 420430022 | MI METALS INC/MILLERSBURG | Dauphin | ( 1) |
| 51218 | 420410026 | MH TECHNOLOGIES LLC/MT HOLLY S | Cumberland | ( 2) |
| 52014 | 420950047 | MFS INC/MINERAL WOOL PLT 1 | Northampton | ( 1) |
| 50696 | 4200300760 | METALTECH | Allegheny | ( 1) |
| 52296 | 421210010 | MERISOL ANTIOXIDANTS/OIL CITY | Venango | ( 1) |
| 50617 | 4200300176 | MERCY HOSPITAL OF PITTSBURGH | Allegheny | ( 1) |
| 51520 | 420690765 | MERCY HOSP/SCRANTON | Lackawanna | ( 1) |
| 51845 | 420910028 | MERCK & CO/WEST POINT | Montgomery | ( 13) |
| 52054 | 420970014 | MERCK & CO/CHEROKEE PLT | Northumberland | ( 5) |
| 51002 | 420190021 | MERCER LIME & STONE /BRANCHTON | Butler | ( 1) |
| 51462 | 420610466 | MEADWESTVACO/BLAIR PLT ALEXAND | Huntingdon | ( 1) |
| 50694 | 4200300700 | MCKEES ROCKS FORGINGS | Allegheny | ( 1) |
| 51781 | 420830041 | MCKEAN CNTY SOLID WA/SERGEANT | Mc_Kean | ( 2) |
| 50679 | 4200300312 | MCCONWAY & TORLEY CORPORATION | Allegheny | ( 2) |
| 50885 | 420110476 | MCCONWAY & TORLEY CO/KUTZTOWN | Berks | ( 3) |
| 51149 | 420290269 | MCAVOY VITRIFIED BRICK CO/PHOE | Chester | ( 1) |
| 50618 | 4200300178 | MAYVIEW STATE HOSPITAL | Allegheny | ( 2) |
| 51524 | 420710014 | MASTERFOODS USA DIV OF MARS IN | Lancaster | ( 1) |
| 51543 | 420710037 | MASONIC HOMES/ELIZABETHTOWN | Lancaster | ( 3) |
| 50604 | 4200300163 | MARSH ASPHALT, INC. - DRAVOSBU | Allegheny | ( 1) |
| 51588 | 420710437 | MANHEIM AUTO AUCTION/MANHEIM | Lancaster | ( 1) |
| 51967 | 420910871 | MAIN LINE HOSPITALS INC/BRYN M | Montgomery | ( 1) |
| 51964 | 420910859 | MAIN LINE HOSPITALS INC DBA TH | Montgomery | ( 1) |
| 51190 | 420370007 | MAGEE RIETER AUTO SYS/BLOOMSBU | Columbia | ( 2) |
| 51502 | 420690023 | MACTAC INC/SCRANTON FAC | Lackawanna | ( 1) |
| 51667 | 420770032 | MACK TRUCKS INC/MACUNGIE | Lehigh | ( 7) |
| 51999 | 420950023 | MACK PRINTING CO/WILSON BORO | Northampton | ( 3) |
| 51757 | 420810780 | LYCOMING CNTY RESOUR/LYCOMING | Lycoming | ( 1) |
| 52487 | 421330007 | LWB REFRACTORIES CO/W MANCHEST | York | ( 9) |
| 51204 | 420390014 | LORD CORP/MECH PROD DIV | Crawford | ( 2) |
| 51744 | 420810011 | LONZA INC/WILLIAMSPORT PLT | Lycoming | ( 2) |
| 51932 | 420910394 | LONZA INC/RIVERSIDE | Montgomery | ( 4) |
| 51962 | 420910826 | LOCKHEED MARTIN CORP/MISSILES | Montgomery | ( 2) |
| 50961 | 420170307 | LOCKHEED MARTIN CORP/COMM & PO | Bucks | ( 2) |
| 51151 | 420290398 | LNP/THORNDALE | Chester | ( 1) |
| 51110 | 420290039 | LINCOLN UNIV/LOWER OXFORD | Chester | ( 2) |
| 51358 | 420450221 | LIBERTY ELEC POWER LLC/EDDYSTO | Delaware | ( 2) |
| 50935 | 420150735 | LEPRINO FOODS CO/WAVERLY PLT | Bradford | ( 2) |
| 52543 | 421330072 | LEISTERS FURNITURE/HANOVER BOR | York | ( 1) |
| 51704 | 420770671 | LEHIGH VALLEY HOSP/S CEDAR CRE | Lehigh | ( 4) |
| 51692 | 420770565 | LEHIGH VALLEY HOSP/17TH & CHEW | Lehigh | ( 1) |
| 52018 | 420950110 | LEHIGH FORGE CORP/BETHLEHEM | Northampton | ( 3) |
| 52525 | 421330060 | LEHIGH CEMENT CO/YORK OPERATIO | York | ( 5) |
| 50825 | 420110039 | LEHIGH CEMENT CO /EVANSVILLE C | Berks | ( 12) |
| 51631 | 420750059 | LEBANON METHANE RECO/N LEBANON | Lebanon | ( 1) |
| 51212 | 420410010 | LEAR OPR CORP/CARLISLE | Cumberland | ( 1) |
| 52461 | 421290455 | LATROBE BREWING CO/LATROBE | Westmoreland | ( 1) |
| 52454 | 421290189 | LATROBE AREA HOSP/LATROBE | Westmoreland | ( 2) |
| 51564 | 420710082 | LASCO BATHWARE INC/W DONEGAL T | Lancaster | ( 1) |
| 52343 | 421250016 | LANGELOTH METALLURGICAL/LANGEL | Washington | ( 1) |
| 51224 | 420410029 | LAND O LAKES INC/HOLLY MILK DI | Cumberland | ( 4) |
| 51547 | 420710056 | LANCASTER MALLEABLE /MANHEIM-K | Lancaster | ( 1) |
| 51589 | 420710680 | LANCASTER HEALTH ALL/LANCASTER | Lancaster | ( 1) |
| 51580 | 420710145 | LANCASTER CNTY SWMA/LANCASTER | Lancaster | ( 3) |
| 51997 | 420950020 | LAFAYETTE COLL/EASTON | Northampton | ( 2) |
| 51650 | 420770019 | LAFARGE CORP/WHITEHALL PLT | Lehigh | ( 14) |
| 52104 | 4210103164 | LA FRANCE CORPORATION | Philadelphia | ( 1) |
| 52095 | 4210101585 | KURZ-HASTINGS INC | Philadelphia | ( 3) |
| 51833 | 420890022 | KULP FOUNDRY/EAST STROUDSBURG | Monroe | ( 1) |
| 51682 | 420770065 | KRAFT FOODS NORTH AMERICA INC | Lehigh | ( 2) |
| 50511 | 4200300027 | KOPPERS INDUSTRIES INC. CLAIRT | Allegheny | ( 3) |
| 52353 | 421290007 | KOPPERS IND/MONESSEN COKE PLT | Westmoreland | ( 4) |
| 51755 | 420810044 | KOPPERS IND/COGEN PLT | Lycoming | ( 1) |
| 50742 | 420070027 | KOPPEL STEEL CORP/KOPPEL | Beaver | ( 3) |
| 50745 | 420070028 | KOPPEL STEEL CORP/AMBRIDGE | Beaver | ( 5) |
| 50661 | 4200300227 | KOPP GLASS, INCORPORATED | Allegheny | ( 1) |
| 51841 | 420910011 | KNOLL INC/EAST GREENVILLE MFG | Montgomery | ( 2) |
| 50731 | 420050371 | KITTANNING BRICK CO/REESEDALE | Armstrong | ( 4) |
| 50654 | 4200300208 | KINDER-MORGAN LIQUIDS TERMINAL | Allegheny | ( 2) |
| 50585 | 4200300102 | KINDER MORGAN INDIANOLA PLANT | Allegheny | ( 1) |
| 51293 | 420450016 | KIMBERLY CLARK PA LLC/CHESTER | Delaware | ( 1) |
| 51519 | 420690722 | KEYSTONE SANI LDFL I/DUNMORE | Lackawanna | ( 1) |
| 51990 | 420950012 | KEYSTONE PORTLAND CEMENT/EAST | Northampton | ( 7) |
| 51194 | 420370011 | KAWNEER CO/BLOOMSBURG PLT | Columbia | ( 1) |
| 51029 | 420210020 | JOHNSTOWN CORP/JOHNSTOWN | Cambria | ( 2) |
| 51153 | 420290796 | JOHNSON MATTHEY INC/CATALYTIC | Chester | ( 1) |
| 51922 | 420910185 | JOHN MIDDLETON INC/KING OF PRU | Montgomery | ( 1) |
| 51447 | 420570001 | JLG IND/MCCONNELLSBURG | Fulton | ( 1) |
| 51571 | 420710094 | JL CLARK INC/LANCASTER | Lancaster | ( 6) |
| 50774 | 420070043 | JEWEL ACQUISITION/MIDLAND FAC | Beaver | ( 9) |
| 52339 | 421250013 | JESSOP STEEL CO/WASHINGTON | Washington | ( 3) |
| 51444 | 420550052 | JERR DAN CORP/STATE LINE PLT | Franklin | ( 1) |
| 52088 | 4210101566 | JEFFERSON SMURFIT CORPORATION | Philadelphia | ( 7) |
| 51835 | 420910006 | JEFFERSON SMURFIT CO/NORTH WAL | Montgomery | ( 1) |
| 52115 | 4210108011 | JEANES HOSPITAL | Philadelphia | ( 1) |
| 50473 | 420010007 | ISP MINERALS INC/CHARMIAN | Adams | ( 1) |
| 51244 | 420430018 | ISG STEELTON LLC/STEELTON STEE | Dauphin | ( 13) |
| 51901 | 420910118 | ISG PLATE LLC/CONSHOHOCKEN | Montgomery | ( 2) |
| 51093 | 420290024 | ISG PLATE LLC/COATESVILLE | Chester | ( 15) |
| 51178 | 420350008 | INTL PAPER CO/LOCK HAVEN MILL | Clinton | ( 2) |
| 51390 | 420490004 | INTL PAPER CO/ERIE MILL | Erie | ( 4) |
| 50811 | 420110016 | INTERSTATE CONTAINER/READING P | Berks | ( 2) |
| 51041 | 420210034 | INTER POWER AHLCON L/COLVER PO | Cambria | ( 2) |
| 52099 | 4210102059 | INOLEX CHEMICAL COMPANY | Philadelphia | ( 2) |
| 51599 | 420730020 | INMETCO/ELLWOOD CITY | Lawrence | ( 3) |
| 51009 | 420190026 | INDSPEC CHEM CORP/PETROLIA | Butler | ( 6) |
| 51446 | 420550929 | IESI PA BLUE RIDGE L/R & A BEN | Franklin | ( 1) |
| 52031 | 420950232 | IESI PA BETHLEHEM LD/BETHLEHEM | Northampton | ( 1) |
| 50620 | 4200300180 | IA CONSTRUCTION GIBSONIA | Allegheny | ( 1) |
| 50495 | 4200300016 | HUSSEY COPPER LTD. | Allegheny | ( 2) |
| 52449 | 421290129 | HUNTINGTON FOAM PITT/MT PLEASA | Westmoreland | ( 1) |
| 51114 | 420290043 | HUHTAMAKI FLEXIBLES /MALVERN | Chester | ( 1) |
| 52143 | 4210109519 | HOUSE OF CORRECTIONS | Philadelphia | ( 3) |
| 51050 | 420250013 | HORSEHEAD RESOURCE DEV/PALMERT | Carbon | ( 6) |
| 50753 | 420070032 | HORSEHEAD CORP/MONACA SMELTER | Beaver | ( 20) |
| 51766 | 420830003 | HONEYWELL INTL INC/FARMERS VAL | Mc_Kean | ( 4) |
| 52215 | 421070021 | HONEYWELL INC/POTTSVILLE PLT | Schuylkill | ( 2) |
| 51969 | 420910886 | HOLY REDEEMER HOSP & MED CTR/A | Montgomery | ( 3) |
| 51824 | 420850523 | HODGE FOUNDRY/GREENVILLE | Mercer | ( 3) |
| 50967 | 420170570 | HINES HORTICULTURE INC/PIPERSV | Bucks | ( 2) |
| 51911 | 420910158 | HILL SCH/POTTSTOWN | Montgomery | ( 4) |
| 51858 | 420910034 | HIGHWAY MATERIALS INC/PLYMOUTH | Montgomery | ( 3) |
| 51965 | 420910862 | HIGHWAY MATERIALS INC/PLYMOUTH | Montgomery | ( 1) |
| 51966 | 420910868 | HIGHWAY MATERIALS INC/PERKIOME | Montgomery | ( 1) |
| 51154 | 420290872 | HIGHWAY MATERIALS INC/MALVERN | Chester | ( 1) |
| 51155 | 420290873 | HIGHWAY MATERIALS INC/DOWNINGT | Chester | ( 1) |
| 50894 | 420110867 | HERSHEY FOODS CORP/READING PLT | Berks | ( 2) |
| 51271 | 420430116 | HERSHEY FOODS CORP/HB REESE CA | Dauphin | ( 3) |
| 51735 | 420790059 | HERSHEY FOODS CORP/HAZLETON PL | Luzerne | ( 1) |
| 51268 | 420430071 | HERSHEY FOODS CORP/EAST PLT | Dauphin | ( 3) |
| 51979 | 420950006 | HERCULES CEMENT CO LP/STOCKERT | Northampton | ( 3) |
| 51363 | 420450903 | HAVERFORD COLL/HAVERFORD COLLE | Delaware | ( 4) |
| 51928 | 420910297 | HATFIELD TWP MUNI AUTH/COLMAR | Montgomery | ( 1) |
| 51954 | 420910660 | HATFIELD QUALITY MEATS INC | Montgomery | ( 6) |
| 51258 | 420430024 | HARSCO CORP/TAYLOR WHARTON GAS | Dauphin | ( 5) |
| 51243 | 420430017 | HARRISBURG AUTH/MUNICIPAL INCI | Dauphin | ( 1) |
| 52534 | 421330063 | HARLEY DAVIDSON MOTOR CO/YORK | York | ( 4) |
| 51310 | 420450028 | HANSON AGGREGATES PA/GLEN MILL | Delaware | ( 1) |
| 52539 | 421330067 | HANOVER FOODS CORP/HANOVER CAN | York | ( 4) |
| 51420 | 420490877 | HAMOT MED CTR/HAMOT MEDICAL CE | Erie | ( 3) |
| 51830 | 420890013 | HAINES & KIBBLEHOUSE/LOCUST RI | Monroe | ( 1) |
| 51693 | 420770567 | HAB IND INC/ALLENTOWN PLT | Lehigh | ( 1) |
| 50940 | 420170014 | H & K MATERIALS INC/CHALFONT | Bucks | ( 1) |
| 50937 | 420150776 | GUTHRIE ROBERT PACKER/SAYRE | Bradford | ( 1) |
| 52212 | 421070003 | GUILFORD MILLS INC/PENN DYE & | Schuylkill | ( 1) |
| 50683 | 4200300342 | GUARDIAN INDUSTRIES CORP. FLOR | Allegheny | ( 2) |
| 52555 | 421330231 | GTY INC/YORK | York | ( 1) |
| 50838 | 420110042 | GST AUTOLEATHER/FLEETWOOD PLT | Berks | ( 1) |
| 51815 | 420850060 | GROVE CITY COLL/GROVE CITY | Mercer | ( 3) |
| 51812 | 420850046 | GREENVILLE METALS INC/TRANSFER | Mercer | ( 3) |
| 52460 | 421290305 | GREENRIDGE RECLAMATION LLC/E H | Westmoreland | ( 1) |
| 52033 | 420950255 | GREEN KNIGHT/PLAINFIELD LANDFI | Northampton | ( 3) |
| 52114 | 4210104944 | GRAYS FERRY COGENERATION PARTN | Philadelphia | ( 1) |
| 51067 | 420270018 | GRAYMONT PA INC/PLEASANT GAP P | Centre | ( 2) |
| 51059 | 420270003 | GRAYMONT PA INC/BELLEFONTE PLA | Centre | ( 2) |
| 52046 | 420950835 | GRAND CTL SANI LDFL /PLAINFIEL | Northampton | ( 2) |
| 51515 | 420690618 | GLOBAL METALFORM/DAVIS ST PLT | Lackawanna | ( 2) |
| 50837 | 420110040 | GLIDDEN DBA ICI PAINTS/READING | Berks | ( 1) |
| 50611 | 4200300165 | GLENSHAW GLASS COMPANY, INC. | Allegheny | ( 6) |
| 52497 | 421330015 | GLEN GERY CORP/YORK DIVISION | York | ( 2) |
| 50889 | 420110554 | GLEN GERY CORP/MID-ATLANTIC PL | Berks | ( 3) |
| 51488 | 420650435 | GLEN GERY CORP/HANLEY DIVISION | Jefferson | ( 1) |
| 51171 | 420330018 | GLEN GERY CORP/BIGLER DIV | Clearfield | ( 2) |
| 51929 | 420910310 | GLAXO SMITHKLINE/UPPER PROVIDE | Montgomery | ( 3) |
| 51903 | 420910120 | GLAXO SMITHKLINE/RESEARCH & DE | Montgomery | ( 6) |
| 51961 | 420910749 | GLASGOW INC/SPRINGHOUSE ASPHAL | Montgomery | ( 1) |
| 51960 | 420910681 | GLASGOW INC/MCCOY QUARRY ASPHA | Montgomery | ( 1) |
| 51844 | 420910023 | GLASGOW INC/IVY ROCK | Montgomery | ( 1) |
| 51362 | 420450848 | GLASGOW INC/FREEBORN ASPHALT P | Delaware | ( 1) |
| 51135 | 420290049 | GLASGOW INC/CATANACH QUARRY | Chester | ( 1) |
| 51048 | 420230056 | GKN SINTER METALS/SHIPPEN TWP | Cameron | ( 1) |
| 52130 | 4210108918 | GIRARD COLLEGE POWER PLANT | Philadelphia | ( 3) |
| 52120 | 4210108039 | GERMANTOWN COMMUNITY HEALTH SE | Philadelphia | ( 2) |
| 51170 | 420310556 | GEORGIA PACIFIC CORP/MARBLE | Clarion | ( 1) |
| 51640 | 420770003 | GEO SPECIALTY CHEM/TRIMET PROD | Lehigh | ( 3) |
| 51503 | 420690029 | GENTEX CORP/SIMPSON PROT CLOTH | Lackawanna | ( 1) |
| 50556 | 4200300065 | GENERAL MOTORS PITTSBURGH PLAN | Allegheny | ( 1) |
| 51978 | 420930015 | GEISINGER MED CTR/DANVILLE | Montour | ( 1) |
| 50605 | 4200300164 | GE CONSUMER PRODUCTS, LIGHTING | Allegheny | ( 6) |
| 51800 | 420850020 | GE CO/GROVE CITY | Mercer | ( 4) |
| 51395 | 420490009 | GE CO/ERIE PLT | Erie | ( 4) |
| 50969 | 420170571 | GE BETZ INC/TREVOSE | Bucks | ( 1) |
| 51045 | 420210657 | GAUTIER STEEL LTD/JOHNSTOWN PL | Cambria | ( 3) |
| 51900 | 420910117 | GASBOY INTL INC/LANSDALE | Montgomery | ( 1) |
| 50597 | 4200300134 | GALVTECH | Allegheny | ( 1) |
| 50973 | 420170574 | GAF MATERIALS CORP/QUAKERTOWN | Bucks | ( 1) |
| 50915 | 420130374 | FRY METALS/ALTOONA PLT | Blair | ( 1) |
| 51230 | 420410041 | FRY COMMUNICATIONS INC/BUILDIN | Cumberland | ( 3) |
| 51233 | 420410124 | FRY COMMUNICATIONS INC/BUILDIN | Cumberland | ( 2) |
| 51228 | 420410030 | FROG SWITCH & MFG CO/CARLISLE | Cumberland | ( 2) |
| 52117 | 4210108031 | FRIENDS HOSPITAL | Philadelphia | ( 1) |
| 50949 | 420170053 | FRES CO SYS USA INC/TELFORD PL | Bucks | ( 2) |
| 50713 | 420050008 | FREEPORT BRICK CO/FREEPORT BOR | Armstrong | ( 2) |
| 50901 | 420111066 | FR&S INC/PIONEER CROSSING LDFL | Berks | ( 1) |
| 51334 | 420450040 | FOAMEX LP/EDDYSTONE PLT | Delaware | ( 4) |
| 52349 | 421250031 | FLEXSYS AMER LTD PAR/MONONGAHE | Washington | ( 1) |
| 52459 | 421290244 | FIRESTONE BLDG PROD /YOUNGWOOD | Westmoreland | ( 1) |
| 50955 | 420170074 | FIBERMARK NORTH AMERICA INC/QU | Bucks | ( 1) |
| 50822 | 420110034 | EXIDE TECH/READING SMELTER | Berks | ( 3) |
| 51937 | 420910430 | EXELON GENERATION CO/WEST CONS | Montgomery | ( 1) |
| 50959 | 420170305 | EXELON GENERATION CO/PENNSBURY | Bucks | ( 2) |
| 52506 | 421330019 | EXELON GENERATION CO/PEACH BOT | York | ( 2) |
| 51951 | 420910625 | EXELON GENERATION CO/MOSER GEN | Montgomery | ( 3) |
| 51916 | 420910179 | EXELON GENERATION CO/LIMERICK | Montgomery | ( 4) |
| 50974 | 420170578 | EXELON GENERATION CO/FALLS TWP | Bucks | ( 3) |
| 51285 | 420450014 | EXELON GENERATION CO/EDDYSTONE | Delaware | ( 8) |
| 51090 | 420290023 | EXELON GENERATION CO/CROMBY GE | Chester | ( 3) |
| 51352 | 420450211 | EXELON GENERATION CO/CHESTER | Delaware | ( 3) |
| 52107 | 4210104905 | EXELON GENERATION CO - SOUTHWA | Philadelphia | ( 4) |
| 51476 | 420630081 | EVERGREEN LANDFILL/FKA PELLEGR | Indiana | ( 1) |
| 50944 | 420170030 | EUREKA STONE QUARRY /RUSH VALL | Bucks | ( 3) |
| 51517 | 420690676 | EUREKA STONE QUARRY /DALEVILLE | Lackawanna | ( 1) |
| 52003 | 420950045 | ESSROC/NAZARETH LOWER CEMENT P | Northampton | ( 11) |
| 52021 | 420950127 | ESSROC/NAZARETH CEMENT PLT 3 | Northampton | ( 10) |
| 51610 | 420730026 | ESSROC/BESSEMER | Lawrence | ( 8) |
| 51399 | 420490026 | ERIE WWTP | Erie | ( 6) |
| 51408 | 420490036 | ERIE FORGE & STEEL/ERIE PLT | Erie | ( 1) |
| 51405 | 420490031 | ERIE COKE CORP/ERIE PLT | Erie | ( 3) |
| 51454 | 420590365 | EQUITRANS INC/ROGERSVILLE COMP | Greene | ( 1) |
| 50735 | 420050504 | EQUITABLE GAS CO/SHOEMAKER | Armstrong | ( 2) |
| 50710 | 4200301014 | EPIC METALS CORPORATION | Allegheny | ( 1) |
| 51410 | 420490141 | ENERGY SYSTEMS NORTH EAST/NORT | Erie | ( 3) |
| 52032 | 420950244 | ENCOR COATINGS INC/UPPER NAZAR | Northampton | ( 1) |
| 50873 | 420110175 | EMPIRE STEEL CASTING/MUHLENBER | Berks | ( 1) |
| 51602 | 420730023 | ELLWOOD QUALITY STEELS CO/NEW | Lawrence | ( 4) |
| 52299 | 421230002 | ELLWOOD NATL FORGE CO/IRVINE | Warren | ( 4) |
| 52443 | 421290073 | ELLIOTT TURBOMACHINERY/JEANNET | Westmoreland | ( 3) |
| 50730 | 420050017 | ELJER PLUMBINGWARE/FORD CITY P | Armstrong | ( 1) |
| 52002 | 420950035 | ELEMENTIS PIGMENTS INC/EASTON | Northampton | ( 1) |
| 52284 | 421210005 | ELECTRALLOY GO CARLSON/OIL CIT | Venango | ( 5) |
| 50874 | 420110355 | EJB PAVING & MATERIALS/ONTELAU | Berks | ( 2) |
| 51040 | 420210033 | EBENSBURG POWER CO/EBENSBURG C | Cambria | ( 1) |
| 50670 | 4200300265 | EASTMAN CHEMICAL RESINS, INC. | Allegheny | ( 5) |
| 51139 | 420290058 | EASTERN SHORE NATURAL GAS CO/D | Chester | ( 2) |
| 50809 | 420110014 | EAST PENN MFG CO INC/SMELTER P | Berks | ( 2) |
| 50888 | 420110478 | EAST PENN MFG CO INC/KUTZTOWN | Berks | ( 1) |
| 52273 | 421170913 | EAGLE FAMILY FOODS INC/WELLSBO | Tioga | ( 1) |
| 52335 | 421250008 | DYNO NOBEL INC/DONORA | Washington | ( 4) |
| 50695 | 4200300705 | DUQUESNE UNIVERSITY | Allegheny | ( 1) |
| 50920 | 420150006 | DUPONT & CO INC/TOWANDA | Bradford | ( 5) |
| 50956 | 420170079 | DUNMORE CORP/NEWTOWN | Bucks | ( 1) |
| 51820 | 420850409 | DUFERCO FARRELL CORP/FARRELL P | Mercer | ( 4) |
| 51136 | 420290054 | DOPACO INC/DOWNINGTOWN | Chester | ( 1) |
| 52451 | 421290178 | DOMINION TRANS INC/TONKIN STA | Westmoreland | ( 1) |
| 52424 | 421290062 | DOMINION TRANS INC/SOUTH OAKFO | Westmoreland | ( 3) |
| 50724 | 420050015 | DOMINION TRANS INC/SOUTH BEND | Armstrong | ( 6) |
| 52262 | 421170022 | DOMINION TRANS INC/SABINSVILLE | Tioga | ( 5) |
| 51485 | 420650032 | DOMINION TRANS INC/PUNXSUTAWNE | Jefferson | ( 3) |
| 52428 | 421290064 | DOMINION TRANS INC/OAKFORD STA | Westmoreland | ( 12) |
| 51430 | 420510167 | DOMINION TRANS INC/NORTH SUMMI | Fayette | ( 2) |
| 51177 | 420330027 | DOMINION TRANS INC/LUTHER STAT | Clearfield | ( 1) |
| 52452 | 421290180 | DOMINION TRANS INC/LINCOLN HEI | Westmoreland | ( 2) |
| 51182 | 420350011 | DOMINION TRANS INC/LEIDY STATI | Clinton | ( 3) |
| 52174 | 421050003 | DOMINION TRANS INC/HARRISON ST | Potter | ( 8) |
| 52166 | 421050002 | DOMINION TRANS INC/GREENLICK S | Potter | ( 8) |
| 51180 | 420350010 | DOMINION TRANS INC/FINNEFROCK | Clinton | ( 2) |
| 52182 | 421050004 | DOMINION TRANS INC/ELLISBURG S | Potter | ( 15) |
| 51450 | 420590021 | DOMINION TRANS INC/CRAYNE STA | Greene | ( 2) |
| 51474 | 420630074 | DOMINION TRANS INC/CHERRY TREE | Indiana | ( 1) |
| 52270 | 421170050 | DOMINION TRANS INC/BOOM STATIO | Tioga | ( 2) |
| 51484 | 420650011 | DOMINION TRANS INC/BIG RUN COM | Jefferson | ( 1) |
| 50786 | 420070119 | DOMINION TRANS INC/BEAVER | Beaver | ( 4) |
| 51384 | 420470007 | DOMINION TRANS INC/ARDELL | Elk | ( 1) |
| 50720 | 420050013 | DOMINION PEOPLES/VALLEY STA | Armstrong | ( 3) |
| 51163 | 420310010 | DOMINION PEOPLES/TRUITTSBURG S | Clarion | ( 1) |
| 51035 | 420210025 | DOMINION PEOPLES/RAGER MT/ LAU | Cambria | ( 3) |
| 50723 | 420050014 | DOMINION PEOPLES/GIRTY STA | Armstrong | ( 1) |
| 51192 | 420370010 | DLM FOODS LLC/BLOOMSBURG PLT | Columbia | ( 2) |
| 50508 | 4200300024 | DLM FOODS | Allegheny | ( 3) |
| 51758 | 420810821 | DIVINE PROVIDENCE HOSP/WILLIAM | Lycoming | ( 3) |
| 50896 | 420111012 | DIETRICHS MILK PROD /READING P | Berks | ( 5) |
| 51676 | 420770052 | DIAGEO TOTAL LOGISTIC CONTROL | Lehigh | ( 3) |
| 50876 | 420110365 | DELAWARE CNTY SWA/ROLLING HILL | Berks | ( 3) |
| 51281 | 420450004 | DELAWARE CNTY REG WA/DELCORA W | Delaware | ( 2) |
| 51368 | 420450966 | DELAWARE CNTY MEM HOSP/DREXEL | Delaware | ( 2) |
| 51338 | 420450041 | DEGUSSA CORP/CHESTER | Delaware | ( 4) |
| 52516 | 421330038 | DEFENSE DISTR SUSQUE/NCAD | York | ( 3) |
| 51279 | 420430928 | DAUPHIN MEADOWS INC/MILLERSBUR | Dauphin | ( 1) |
| 51566 | 420710087 | DART CONTAINER CORP/LEOLA | Lancaster | ( 5) |
| 50750 | 420070031 | DARLINGTON BRICK & CLAY/DARLIN | Beaver | ( 3) |
| 50737 | 420070003 | CUTLER HAMMER/BEAVER | Beaver | ( 2) |
| 51639 | 420752019 | CURWOOD SPECIALTY FILMS/LEBANO | Lebanon | ( 1) |
| 51284 | 420450012 | CROZER CHESTER MED CTR/UPLAND | Delaware | ( 1) |
| 51429 | 420510072 | CROWN CORK & SEAL CO/SOUTH CON | Fayette | ( 1) |
| 51003 | 420190022 | CROMPTON CORP/PETROLIA | Butler | ( 3) |
| 51187 | 420350812 | CRODA INC/DRAKETOWN ROAD | Clinton | ( 1) |
| 50916 | 420150002 | CRAFTMASTER MFG/TOWANDA MILL | Bradford | ( 4) |
| 52510 | 421330031 | CP CONVERTERS INC/MANCHESTER | York | ( 4) |
| 50805 | 420110002 | COUNTY OF BERKS/BERKS COUNTY C | Berks | ( 2) |
| 51069 | 420270021 | CORNING ASAHI VIDEO PROD CO/ST | Centre | ( 5) |
| 51882 | 420910074 | COOPERS CREEK CHEM CORP/CONSHO | Montgomery | ( 1) |
| 52137 | 4210109039 | CONVENT OF THE SISTERS OF ST J | Philadelphia | ( 1) |
| 51448 | 420590008 | CONSOL PA COAL CO/BAILEY PREP | Greene | ( 1) |
| 51455 | 420590634 | CONSOL COAL CO/ROBENA PREP PLT | Greene | ( 1) |
| 51316 | 420450030 | CONOCOPHILLIPS CO/TRAINER REF | Delaware | ( 18) |
| 51342 | 420450049 | CONGOLEUM CORP/TRAINER PLT | Delaware | ( 3) |
| 51038 | 420210027 | CONEMAUGH VALLEY MEM/JOHNSTOWN | Cambria | ( 2) |
| 51463 | 420630001 | CONEMAUGH STA OWNERS GROUP/CON | Indiana | ( 3) |
| 52051 | 420970013 | CONAGRA/MILTON PLT | Northumberland | ( 3) |
| 51239 | 420410715 | COMM REFUSE SVC INC/CUMBERLAND | Cumberland | ( 2) |
| 51512 | 420690208 | COMM CTL ENERGY CORP/BOILER HO | Lackawanna | ( 1) |
| 51583 | 420710283 | COLUMBIA GAS TRANS CORP/MARIET | Lancaster | ( 3) |
| 51440 | 420550014 | COLUMBIA GAS TRANS CORP/GREENC | Franklin | ( 4) |
| 50474 | 420010013 | COLUMBIA GAS TRANS CORP/GETTYS | Adams | ( 4) |
| 52041 | 420950543 | COLUMBIA GAS TRANS CORP/FORKS | Northampton | ( 4) |
| 50801 | 420090009 | COLUMBIA GAS TRANS CORP/ARTEMA | Bedford | ( 3) |
| 52249 | 421110015 | COLUMBIA GAS TRANS C/SALISBURY | Somerset | ( 5) |
| 51881 | 420910073 | COLORCON/UPPER GWYNEDD | Montgomery | ( 1) |
| 51756 | 420810086 | COASTAL ALUM ROLLING MILLS/WIL | Lycoming | ( 1) |
| 50957 | 420170083 | CMS GILBRETH PACKAGING/BRISTOL | Bucks | ( 1) |
| 50947 | 420170038 | CLEVELAND STEEL CONTAINER/QUAK | Bucks | ( 2) |
| 52101 | 4210102148 | CLEAN EARTH OF PHILADELPHIA, I | Philadelphia | ( 1) |
| 51548 | 420710063 | CLARK FILTER/HEMPFIELD DIVISIO | Lancaster | ( 1) |
| 50558 | 4200300079 | CLAIRTON SLAG, INC. | Allegheny | ( 1) |
| 51518 | 420690678 | CINRAM MFG INC/OLYPHANT | Lackawanna | ( 1) |
| 52048 | 420950930 | CHRIN BROS SANI LDFL/CHRIN LDF | Northampton | ( 1) |
| 50863 | 420110099 | CHIYODA AMER INC/CAERNARVON | Berks | ( 2) |
| 50697 | 4200300763 | CHILDRENS HOSPITAL OF PITTSBUR | Allegheny | ( 1) |
| 52442 | 421290071 | CHESTNUT RIDGE FOAM /LATROBE P | Westmoreland | ( 1) |
| 51596 | 420710837 | CHESTER CNTY SOLID W/LANCHESTE | Lancaster | ( 1) |
| 51141 | 420290108 | CHESTER CNTY HOSP/WEST CHESTER | Chester | ( 3) |
| 50583 | 4200300094 | CHAMBERS DEVELOPMENT CO., INC. | Allegheny | ( 1) |
| 51494 | 420690010 | CHAMBERLAIN MFG CORP/SCRANTON | Lackawanna | ( 6) |
| 51374 | 420470004 | CG ELECTRODES LLC/ST MARYS | Elk | ( 5) |
| 51717 | 420790013 | CERTAIN TEED PROD CO/MOUNTAINT | Luzerne | ( 3) |
| 51074 | 420270719 | CERRO METAL PROD CO/PLT 1 & 4 | Centre | ( 4) |
| 51144 | 420290119 | CENTOCOR INC/MALVERN | Chester | ( 4) |
| 51606 | 420730024 | CEMEX INC/WAMPUM CEMENT PLT | Lawrence | ( 4) |
| 50678 | 4200300311 | CDC, NIOSH, PITTSBURGH RESEARC | Allegheny | ( 1) |
| 51796 | 420850015 | CCL CONTAINER/ADVANCED MONOBLO | Mercer | ( 2) |
| 51439 | 420550013 | CASTING TECH INC/WAYNESBORO | Franklin | ( 1) |
| 51504 | 420690032 | CASCADES TISSUE GRP PA INC/RAN | Lackawanna | ( 4) |
| 50815 | 420110031 | CARPENTER TECH CORP/READING PL | Berks | ( 7) |
| 51686 | 420770174 | CARPENTER CO/UPPER MACUNGIE | Lehigh | ( 1) |
| 51449 | 420590012 | CARNEGIE INTERSTATE /HOLLY HIL | Greene | ( 1) |
| 51618 | 420750016 | CARMEUSE LIME INC/MILLARD LIME | Lebanon | ( 3) |
| 50482 | 420010050 | CARMEUSE LIME INC/HANOVER LIME | Adams | ( 3) |
| 51211 | 420410009 | CARLISLE TIRE & WHEEL/COLLEGE | Cumberland | ( 1) |
| 51210 | 420410008 | CARLISLE SYNTEC INC/CARLISLE | Cumberland | ( 1) |
| 52105 | 4210103887 | CARDONE INDUSTRIES INC. | Philadelphia | ( 2) |
| 51373 | 420470001 | CARBONE AMER/BENZINGER TWP PLT | Elk | ( 1) |
| 50852 | 420110082 | CARAUSTAR MILL GROUP INC/SINKI | Berks | ( 1) |
| 50865 | 420110101 | CAN CORP OF AMER/BLANDON PLT | Berks | ( 4) |
| 50842 | 420110075 | CAMBRIDGE LEE IND IN/READING T | Berks | ( 3) |
| 51043 | 420210046 | CAMBRIA COGEN CO/CAMBRIA COGEN | Cambria | ( 2) |
| 52293 | 421210009 | CALUMET LUBRICANTS CO/ROUSEVIL | Venango | ( 3) |
| 50880 | 420110427 | CALPINE CONST FINANC/ONTELAUNE | Berks | ( 1) |
| 50497 | 4200300017 | CALGON CARBON CORPORATION | Allegheny | ( 3) |
| 51018 | 420190860 | BUTLER COLOR PRESS I/BUTLER CO | Butler | ( 2) |
| 51557 | 420710074 | BURLE IND INC/LANCASTER | Lancaster | ( 1) |
| 52276 | 421190002 | BUCKNELL UNIV/LEWISBURG CAMPUS | Union | ( 2) |
| 50584 | 4200300095 | BUCKEYE CORAOPOLIS PIPELINE FA | Allegheny | ( 1) |
| 51897 | 420910115 | BROWN PRINTING CO/EAST GREENVI | Montgomery | ( 3) |
| 50708 | 4200300913 | BRADDOCK RECOVERY, INC. | Allegheny | ( 2) |
| 51708 | 420790008 | BPB MFG INC/ HARDING | Luzerne | ( 9) |
| 50813 | 420110028 | BOYERTOWN FOUNDRY CO/FKA EAFCO | Berks | ( 2) |
| 50699 | 4200300881 | BOX USA | Allegheny | ( 1) |
| 51649 | 420770013 | BOURAS ACQUISITION INC/PRIOR C | Lehigh | ( 1) |
| 51565 | 420710084 | BOLLMAN HAT CO/MAIN ST FACILIT | Lancaster | ( 1) |
| 51311 | 420450029 | BOEING ROTOCRAFT MANAGEMENT CE | Delaware | ( 5) |
| 51021 | 420192040 | BNZ MATERIALS INC/ZELIENOPLE | Butler | ( 7) |
| 51389 | 420490002 | BLDG MATERIALS MFG CORP/ERIE | Erie | ( 1) |
| 50675 | 4200300283 | BFI - IMPERIAL LANDFILL | Allegheny | ( 2) |
| 50669 | 4200300259 | BETTIS ATOMIC POWER LABORATORY | Allegheny | ( 1) |
| 50941 | 420170023 | BETTER MATERIALS CORP/PENNS PA | Bucks | ( 2) |
| 51729 | 420790038 | BEMIS CO INC/HAZLETON | Luzerne | ( 5) |
| 50602 | 4200300144 | BELLEFIELD BOILER PLANT | Allegheny | ( 2) |
| 50798 | 420090004 | BEDFORD MATERIALS/BEDFORD | Bedford | ( 3) |
| 50773 | 420070036 | BASF CORP/MONACA PLT | Beaver | ( 1) |
| 51148 | 420290164 | BAKERY FEEDS /HONEY BROOK | Chester | ( 1) |
| 50666 | 4200300255 | BAKERSTOWN CONTAINER CORPORATI | Allegheny | ( 2) |
| 50665 | 4200300241 | BAKE- LINE GROUP LLC | Allegheny | ( 1) |
| 51968 | 420910874 | ATOFINA CHEM INC/KING OF PRUSS | Montgomery | ( 1) |
| 50963 | 420170319 | ATOFINA CHEM INC/ATOGLAS DIV | Bucks | ( 1) |
| 50588 | 4200300121 | ASHLAND SPECIALTY CHEMICAL CO | Allegheny | ( 2) |
| 52103 | 4210103062 | ASHLAND CHEMICAL-PHILADELPHIA | Philadelphia | ( 1) |
| 51535 | 420710036 | ARMSTRONG WORLD IND /MARIETTA | Lancaster | ( 8) |
| 51593 | 420710754 | ARMSTRONG WORLD IND /INNOVATIO | Lancaster | ( 3) |
| 51525 | 420710035 | ARMSTRONG WORLD IND /FLOOR PLT | Lancaster | ( 10) |
| 51186 | 420350014 | ARMSTRONG WORLD IND /BEECH CRE | Clinton | ( 1) |
| 51006 | 420190024 | ARMSTRONG CEMENT & SUPPLY/WINF | Butler | ( 3) |
| 50904 | 420130010 | APPLETON PAPERS/SPRING MILL | Blair | ( 6) |
| 51746 | 420810021 | ANDRITZ INC/MUNCY FOUNDRY | Lycoming | ( 2) |
| 50739 | 420070012 | ANCHOR HOCKING CORP/PHOENIX GL | Beaver | ( 3) |
| 51425 | 420510020 | ANCHOR GLASS CONTAINER/PLT 5 | Fayette | ( 4) |
| 50970 | 420170572 | AMETEK INC/SELLERSVILLE | Bucks | ( 3) |
| 51263 | 420430026 | AMES TRUE TEMPER INC/HARRISBUR | Dauphin | ( 1) |
| 52456 | 421290233 | AMERICAN VIDEO GLASS CO LLC/MT | Westmoreland | ( 3) |
| 50712 | 4200301032 | AMERICAN BRIDGE MANUFACTURING | Allegheny | ( 1) |
| 51770 | 420830004 | AMER REF GROUP/BRADFORD | Mc_Kean | ( 8) |
| 51345 | 420450059 | AMER REF FUEL CO/DELAWARE VALL | Delaware | ( 6) |
| 52554 | 421330093 | AMER COLOR GRAPHICS/YORK | York | ( 1) |
| 51549 | 420710071 | ALUMAX MILL PROD INC/MILL PROD | Lancaster | ( 8) |
| 51049 | 420250001 | ALTADIS USA INC/MCADOO PLT | Carbon | ( 1) |
| 52440 | 421290065 | ALLVAC TELEDYNE PKG/LATROBE | Westmoreland | ( 2) |
| 51513 | 420690533 | ALLIANCE SANI LANDFILL INC/TAY | Lackawanna | ( 2) |
| 51685 | 420770071 | ALLEN ORGAN CO/MACUNGIE | Lehigh | ( 1) |
| 51880 | 420910070 | ALLEGRO MICRO SYS INC/WILLOW G | Montgomery | ( 1) |
| 52376 | 421290044 | ALLEGHENY LUDLUM CORP/WEST LEE | Westmoreland | ( 39) |
| 52447 | 421290085 | ALLEGHENY LUDLUM CORP/VANDERGR | Westmoreland | ( 2) |
| 50560 | 4200300093 | ALLEGHENY LUDLUM CORP - BRACKE | Allegheny | ( 23) |
| 52344 | 421250025 | ALLEGHENY LUDLUM COR/HOUSTON-F | Washington | ( 2) |
| 52415 | 421290045 | ALLEGHENY FOUNDRY CO/BOLIVAR | Westmoreland | ( 1) |
| 50693 | 4200300580 | ALLEGHENY ENERGY UNITS 1 & 2 | Allegheny | ( 1) |
| 52342 | 421250014 | ALLEGHENY ENERGY SUPPLY CO/MIT | Washington | ( 1) |
| 50600 | 4200300140 | ALLEGHENY COUNTY SANITARY AUTH | Allegheny | ( 2) |
| 50593 | 4200300133 | ALLEGHENY COUNTY AIRPORT AUTHO | Allegheny | ( 4) |
| 50598 | 4200300139 | ALLEGHENY ASPHALT MFG. INC. | Allegheny | ( 2) |
| 50978 | 420170611 | ALFA LAVAL SEPARATION/WARMINST | Bucks | ( 1) |
| 51621 | 420750019 | ALCOA INC/LEBANON WORKS | Lebanon | ( 9) |
| 52225 | 421070931 | ALCOA EXTRUSIONS INC/CRESSONA | Schuylkill | ( 7) |
| 52118 | 4210108034 | ALBERT EINSTEIN MEDICAL CENTER | Philadelphia | ( 1) |
| 50913 | 420130077 | ALBEMARLE/TYRONE QUALITY CHEM | Blair | ( 2) |
| 50983 | 420190007 | AK STEEL CORP/BUTLER WORKS | Butler | ( 13) |
| 51694 | 420770589 | AIR PROD & CHEM INC/TREXLERTOW | Lehigh | ( 8) |
| 51208 | 420410005 | AHLSTROM TECH SPECIALTIES/MT H | Cumberland | ( 2) |
| 51461 | 420610016 | AGY HUNTINGDON LLC/HUNTINGDON | Huntingdon | ( 1) |
| 50845 | 420110078 | AGERE SYSTEMS INC/READING FACI | Berks | ( 3) |
| 51643 | 420770010 | AGERE SYSTEMS INC/ALLENTOWN | Lehigh | ( 3) |
| 51201 | 420390007 | ADVANCED CAST PROD/MEADVILLE | Crawford | ( 1) |
| 52508 | 421330027 | ADHESIVES RESEARCH INC/GLEN RO | York | ( 2) |
| 52267 | 421170047 | ACP MFG CO LLC/LAWRENCE TWP PL | Tioga | ( 3) |
| 52049 | 420970006 | ACF IND/AMCAR DIV | Northumberland | ( 2) |
| 51936 | 420910414 | ABINGTON MEM HOSP/ABINGTON | Montgomery | ( 1) |
| 50953 | 420170056 | 3M CO/BRISTOL | Bucks | ( 2) |
total number of sources: 2087 (home)