EPA Air · source records
Air source records in Frederick County, Maryland, A to Z
380 operating stationary sources that EPA’s ICIS-AIR register classes as major, synthetic minor or minor. Each name opens the source’s record: its classification, its high-priority violation status, its compliance evaluations, violations, stack tests, and its enforcement actions and penalties. The place’s figures are at air-emissions sources in Frederick County, Maryland.
- 7-11 GAS STATION Frederick (Historical), MD0000002402100437
- 7-11 GAS STATION Frederick (Historical), MD0000002402100558
- 7-11 STORE Frederick (Historical), MD0000002402100431
- 7-11 STORE Thurmont, MD0000002402100432
- 7-11 STORE GAS STATION Frederick (Historical), MD0000002402100552
- A-1 CHOICE, INCORPORATED Frederick (Historical), MD0000002402100560
- A-1 MART Frederick (Historical), MD0000002402100559
- AIRCRAFT OWNERS & PILOTS ASSOC. Frederick (Historical), MD0000002402100270
- AIRPAX Frederick (Historical), MD0000002402100150
- ALLEGANY POWER - FREDERICK CENTER Frederick (Historical), MD0000002402100529
- AMOCO - 9486 MEYERSVILLE ROAD Myersville, MD0000002402100517
- ANTIQUE IMPORTS Frederick (Historical), MD0000002402100267
- APPLIED ELECTRO MECHANICS Point Of Rocks, MD0000002402100124
- ASTRAZENECA, PLP Frederick, MD0000002402100459
- AT & T MOBILITY - MONROVIA Monrovia, MD0000002402100113
- AUTO BODY DIMENSIONS Frederick (Historical), MD0000002402100274
- AUTO CONNECTION LLC Buckeystown, MD0000002402100500
- AUTO CRAFT/LAWSON'S Frederick (Historical), MD0000002402100299
- AUTOMOTIVE PARTS & MACHINE Frederick (Historical), MD0000002402100348
- AVEMCO Frederick (Historical), MD0000002402100282
- BALLENGER CREEK ELEMENTARY SCHOOL Frederick (Historical), MD0000002402100284
- BALLENGER CREEK MIDDLE SCHOOL Frederick (Historical), MD0000002402100236
- BALLENGER CREEK WASTEWATER PLANT Frederick (Historical), MD0000002402100389
- BARNES CABINET SHOP Frederick (Historical), MD0000002402100207
- BARNES COUNTRY STORE Frederick (Historical), MD0000002402100578
- BEACON HOUSE Frederick (Historical), MD0000002402100101
- BELL ATLANTIC - 33 EAST PATRICK ST. Frederick (Historical), MD0000002402100528
- BERG CORP @ CITIZENS CARE Frederick (Historical), MD0000002402100721
- BILL'S AUTO BODY Thurmont, MD0000002402100294
- BIMBO BAKERIES USA, INC Frederick, MD0000002402100234
- BLUEGRASS MATERIALS-FREDERICK QUARRY Frederick (Historical), MD0000002402100029
- BP GAS STATION Frederick (Historical), MD0000002402100434
- BP GAS STATION Middletown, MD0000002402100435
- BP GAS STATION Frederick (Historical), MD0000002402100440
- BP SERVICE STATION Monrovia, MD0000002402100562
- BP STATION Jefferson, MD0000002402100452
- BP STATION Frederick (Historical), MD0000002402100457
- BRUNSWICK CITGO Brunswick, MD0000002402100497
- BRUNSWICK CO-OP Brunswick, MD0000002402100161
- BRUNSWICK ELEMENTARY Brunswick, MD0000002402100096
- BRUNSWICK EXCAVATING @ MATAN DEVELOPMENT Frederick (Historical), MD0000002402100714
- BRUNSWICK EXCAVATING, INC. Frederick (Historical), MD0000002402100618
- BRUNSWICK HIGH SCHOOL Brunswick, MD0000002402100063
- BRUNSWICK MIDDLE SCHOOL Brunswick, MD0000002402100200
- BRUNSWICK WEDGEWOOD - TEMPORARY PLNT Frederick (Historical), MD0000002402100477
- BRUNSWICK WOODWORKING Brunswick, MD0000002402100216
- BURHAN'S CABINETS New Market, MD0000002402100340
- BUSSARD'S AUTO REPAIR Frederick (Historical), MD0000002402100398
- CALVARY UNITED METHODIST CHURCH Frederick (Historical), MD0000002402100044
- CANAM STEEL Point Of Rocks, MD0000002402100254
- CAPRICORN PHARMA Frederick (Historical), MD0000002402100534
- CAR ENTERPRISE - 242 S. JEFFERSON Frederick (Historical), MD0000002402100502
- CARGILL - NUTRENA FEED DIVISION Walkersville, MD0000002402100126
- CARROLL CREEK ANTIQUE REFINISHING SHOP Frederick (Historical), MD0000002402100319
- CARROLL MANOR SCHOOL Adamstown, MD0000002402100097
- CARROLL PARKWAY, 1001 Frederick (Historical), MD0000002402100144
- CARROLL PARKWAY, 750 Frederick (Historical), MD0000002402100048
- CATOCTIN BODY WORKS Thurmont, MD0000002402100462
- CENTRAL MD INTERNATIONAL TRUCK Frederick (Historical), MD0000002402100662
- CHARLES RIVER LABORATORIES Frederick (Historical), MD0000002402100647
- CHARLES WOOSTER COLOURS Frederick (Historical), MD0000002402100336
- CHEVRON Frederick (Historical), MD0000002402100613
- CHEVY CHASE BANK - WESTVIEW Frederick (Historical), MD0000002402100456
- CHRIS' CLASSIC RESTORATIONS Frederick (Historical), MD0000002402100689
- CHRIST REFORMED CHURCH Middletown, MD0000002402100416
- CHURCH OF THE BRETHREN Frederick (Historical), MD0000002402100329
- CITGO Frederick (Historical), MD0000002402100491
- CITGO Frederick (Historical), MD0000002402100568
- CITIZEN'S NURSING HOME FRED. COUNTY Frederick (Historical), MD0000002402100162
- CITIZENS SERVICES ADMINISTRATION Frederick (Historical), MD0000002402100092
- CLARK WELDING Frederick (Historical), MD0000002402100503
- CLASSIC FUELS New Market, MD0000002402100495
- COLBY'S AUTOMOTIVE WORKS Myersville, MD0000002402100410
- CONTROL LOGISTICS Frederick (Historical), MD0000002402100266
- CORPORATE COLOR Frederick (Historical), MD0000002402100526
- COSTCO Frederick (Historical), MD0000002402100498
- COUNTY OFFICE-WINCHE Frederick (Historical), MD0000002402100102
- COURT STREET, NORTH 20 Frederick (Historical), MD0000002402100307
- CRAFTED INTERIORS Frederick (Historical), MD0000002402100321
- CRAFTED INTERIORS Ijamsville, MD0000002402100386
- CREATIVE COLOURS Frederick (Historical), MD0000002402100300
- CRISPLANT USA MANUFACTURING Frederick (Historical), MD0000002402100451
- CROWN - 100 WEST SEVENTH STREET Frederick (Historical), MD0000002402100501
- CSR HYDROCONDUIT Frederick (Historical), MD0000002402100525
- DAIRY MAID DAIRY Frederick (Historical), MD0000002402100117
- DAMICO WOOD & INSTRUMENT WORKS Frederick (Historical), MD0000002402100379
- DAN'S AUTO BODY SHOP Frederick (Historical), MD0000002402100363
- DELAUTER, LEE & SONS Middletown, MD0000002402100553
- DEPT OF AGRICULTURE Frederick (Historical), MD0000002402100133
- DEPT. OF PUBLIC WORKS - FREDERICK Frederick (Historical), MD0000002402100268
- DESIGN BY LIGHTFOOT Ijamsville, MD0000002402100323
- DIAMOND CONTAINER Frederick (Historical), MD0000002402100367
- DIVERSIFIED COATINGS Frederick (Historical), MD0000002402100420
- DIXON MACHINE Frederick (Historical), MD0000002402100532
- DOMINION TRANSMISSION, INC Middletown, MD0000002402100707
- DYNA CORPORATION - TEMPORARY PLANT Frederick (Historical), MD0000002402100439
- EAST COAST RELAY CTR Frederick (Historical), MD0000002402100045
- EAST FREDERICK ELEMENTARY SCHOOL Frederick (Historical), MD0000002402100064
- EMMITSBURG COMMUNITY CENTER Emmitsburg, MD0000002402100066
- EMMITSBURG ELEMENTARY SCHOOL Emmitsburg, MD0000002402100180
- ESSROC CEMENT CORPORATION Frederick (Historical), MD0000002402100013
- ETRON Ijamsville, MD0000002402100337
- EVANGELICAL LUTHERAN CHURCH Frederick (Historical), MD0000002402100034
- EVERGREEN GAS & GO Frederick (Historical), MD0000002402100536
- EXXON Myersville, MD0000002402100381
- EXXON Frederick (Historical), MD0000002402100442
- EXXON Frederick (Historical), MD0000002402100454
- EXXON Frederick (Historical), MD0000002402100461
- EXXON Frederick (Historical), MD0000002402100482
- EXXON Emmitsburg, MD0000002402100499
- EXXON Frederick (Historical), MD0000002402100519
- EXXON Frederick (Historical), MD0000002402100520
- EXXON GAS STATION Frederick (Historical), MD0000002402100405
- FAIRCHILD CONTROLS Frederick (Historical), MD0000002402100390
- FAMILY CLEANERS New Market, MD0000002402100249
- FANNIE MAE UTC DATA CENTER Urbana, MD0000002402100599
- FARMER'S COOPERATIVE ASSOCIATION Frederick (Historical), MD0000002402100255
- FARMERS & MECHANICS BANK - MARKET ST Frederick (Historical), MD0000002402100039
- FARMERS & MECHANICS BANK -JOHNSON DR Frederick (Historical), MD0000002402100265
- FARMERS & MECHANICS BANK -PATRICK ST Frederick (Historical), MD0000002402100264
- FARMERS COOPERATIVE Frederick (Historical), MD0000002402100127
- FARMERS COOPERATIVE - REMED Frederick (Historical), MD0000002402100472
- FDI SERVICES Frederick (Historical), MD0000002402100535
- FEAGA'S SERVICE STATION Frederick (Historical), MD0000002402100424
- FIRST BAPTIST CHURCH Frederick (Historical), MD0000002402100275
- FITZGERALD COLLISION CENTER I Frederick (Historical), MD0000002402100258
- FLAIR USAR CENTER Frederick (Historical), MD0000002402100168
- FLINTHILL GROCERY Adamstown, MD0000002402100227
- FLORIDA ROCK INDUSTRIES Frederick (Historical), MD0000002402100542
- FORT DETRICK - MAIN POST Fort Detrick, MD0000002402100131
- FOUNTAINDALE SUNOCO Middletown, MD0000002402100554
- FREDERICK ARMORY Frederick (Historical), MD0000002402100177
- FREDERICK ASPHALT CO/ESSROC SITE Frederick, MD0000002402100408
- FREDERICK AUTO BODY Frederick (Historical), MD0000002402100221
- FREDERICK BRICK WORKS Frederick (Historical), MD0000002402100053
- FREDERICK CITY HALL Frederick (Historical), MD0000002402100103
- FREDERICK CO SHERIFF HEADQUARTERS Frederick (Historical), MD0000002402100087
- FREDERICK CO. ADULT DETENTION CNTR. Frederick (Historical), MD0000002402100226
- FREDERICK CO. BD. ED Frederick (Historical), MD0000002402100091
- FREDERICK COMMUNITY COLLEGE Frederick (Historical), MD0000002402100139
- FREDERICK COUNTY ENFORCEMENT COMPLEX Frederick (Historical), MD0000002402100573
- FREDERICK COUNTY HEALTH DEPARTMENT Frederick (Historical), MD0000002402100327
- FREDERICK COUNTY HIGHWAY DEPARTMENT Frederick (Historical), MD0000002402100153
- FREDERICK COUNTY PUBLIC LIBRARY Frederick (Historical), MD0000002402100312
- FREDERICK DEPT. OF SOCIAL SERVICES Frederick (Historical), MD0000002402100311
- FREDERICK GAS COMPANY Frederick (Historical), MD0000002402100402
- FREDERICK HIGH SCHOOL Frederick (Historical), MD0000002402100067
- FREDERICK MAINTENANCE FACILITY Frederick (Historical), MD00000024021G0011
- FREDERICK MEMORIAL HOSPITAL Frederick (Historical), MD0000002402100033
- FREDERICK MOTOR COMPANY Frederick (Historical), MD0000002402100320
- FREDERICK NATIONAL LABORATORY FOR CANCER RESEARCH Frederick, MD0000002402100444
- FREDERICK NEWS-POST Frederick (Historical), MD0000002402100301
- FREDERICK RECREATION CENTER Frederick (Historical), MD0000002402100009
- FREDERICK RESEARCH CENTER Frederick (Historical), MD0000002402100187
- FREDERICK TOWNE MALL Frederick (Historical), MD0000002402100128
- FREEMAN SHOE COMPANY Emmitsburg, MD0000002402100012
- FREESTATE GAS STATION Frederick (Historical), MD0000002402100164
- FUEL WORKS GAS STATION Walkersville, MD0000002402100512
- GAS MART OF FREDERICK Frederick (Historical), MD0000002402100566
- GENERAL ENGINEERING Frederick (Historical), MD0000002402100286
- GENSTAR - THURMONT Thurmont, MD0000002402100141
- GEORGE'S AUTO BODY Frederick (Historical), MD0000002402100344
- GETGO Frederick (Historical), MD0000002402100428
- GETGO Frederick (Historical), MD0000002402100515
- GETGO Frederick (Historical), MD0000002402100551
- GETGO Frederick (Historical), MD0000002402100687
- GETTY Emmitsburg, MD0000002402100224
- GIANT FUEL #346 Frederick (Historical), MD0000002402100717
- GIANT FUEL FACILITY #335 Frederick (Historical), MD0000002402100683
- GIVENS COLLISION REPAIR CENTER Frederick (Historical), MD0000002402100508
- GIVENS COLLISION REPAIR CENTER, INC. Frederick (Historical), MD0000002402100666
- GLADE ELEMENTARY SCHOOL Walkersville, MD0000002402100414
- GOLDEN DIPT Frederick (Historical), MD0000002402100108
- GREEN VALLEY CLEANERS Monrovia, MD0000002402100364
- GREEN VALLEY CONVENIENCE New Market, MD0000002402100530
- GREEN VALLEY ELEMENTARY SCHOOL Frederick (Historical), MD0000002402100107
- GREEN VALLEY GARAGE Monrovia, MD0000002402100555
- GRIFFITH ENERGY SERVICES-FREDERICK Frederick (Historical), MD0000002402100681
- GRIMES TRUCK CENTER Frederick (Historical), MD0000002402100467
- GROFF SIGNS Frederick (Historical), MD0000002402100331
- HAHN TRANSPORTATION New Market, MD0000002402100507
- HARLAN SPRAGUE DAWLEY, INC. Frederick (Historical), MD0000002402100189
- HARTZ & COMPANY Frederick (Historical), MD0000002402100046
- HEATHER RIDGE SCHOOL Frederick (Historical), MD0000002402100322
- HEAVENLY DAYS CREMATORIUM, LLC. Urbana, MD0000002402100612
- HIGH'S Thurmont, MD0000002402100464
- HIGH'S Middletown, MD0000002402100475
- HIGH'S New Market, MD0000002402100476
- HIGH'S Woodsboro, MD0000002402100579
- HILLCREST ELEMENTARY SCHOOL Frederick (Historical), MD0000002402100242
- HOLIDAY INN - HOLIDAY DRIVE Frederick (Historical), MD0000002402100293
- HOLIDAY INN - WEST PATRICK ST.-FRED. Frederick (Historical), MD0000002402100201
- HOLLY HILLS COUNTRY CLUB Ijamsville, MD0000002402100304
- HOMEWOOD RETIREMENT CENTER Frederick (Historical), MD0000002402100105
- HOOD COLLEGE Frederick (Historical), MD0000002402100038
- INTERNATIONAL SOFTWARE SERVICES Frederick (Historical), MD0000002402100251
- INTERSTATE AUTO BODY Frederick (Historical), MD0000002402100356
- INVITROGEN CORPORATION Frederick, MD0000002402100546
- JEFFERSON CLEANERS Frederick (Historical), MD0000002402100248
- JEFFERSON M&R Jefferson, MD0000002402100469
- JEFFERSON ST. SERVICE STATION Frederick (Historical), MD0000002402100577
- JENKINS MOTORS - FREDERICK Frederick (Historical), MD0000002402100197
- JOHNNY D'S DINER Frederick (Historical), MD0000002402100511
- JOHNSON, GOVERNOR THOMAS HIGH SCHOOL Frederick (Historical), MD0000002402100082
- KEMPTOWN ELEMENTARY SCHOOL Kemptown, MD0000002402100178
- LAUREL SAND & GRAVEL, INC. - LAUREL HILL QUARRY Woodsboro, MD0000002402100003
- LECKEMBY & BUISCH CABINET MAKERS Frederick (Historical), MD0000002402100383
- LEE DELAUTER & SONS Myersville, MD0000002402100561
- LEWISTOWN ELEMENTARY - FREDERICK Frederick (Historical), MD0000002402100069
- LIBERTY Thurmont, MD0000002402100518
- LIBERTY GAS STATION Frederick (Historical), MD0000002402100484
- LIBERTY GAS STATION Frederick (Historical), MD0000002402100516
- LIBERTYTOWN ELEMENTARY SCHOOL Libertytown, MD0000002402100070
- LIFE TECHNOLOGIES Frederick (Historical), MD0000002402100279
- LINGANORE HIGH SCHOOL Frederick (Historical), MD0000002402100071
- LONZA WALKERSVILLE, INC. Walkersville, MD0000002402100025
- LOWEST PRICE Frederick (Historical), MD0000002402100288
- M & M ELECTRIC MOTOR REPAIR Frederick (Historical), MD0000002402100271
- MAACO AUTO PAINTING Frederick (Historical), MD0000002402100510
- MANUFACTURING SOLUTIONS Ijamsville, MD0000002402100324
- MARYLAND ODD FELLOWS HOME Frederick (Historical), MD0000002402100186
- MARYLAND SCHOOL FOR THE DEAF Frederick (Historical), MD0000002402100004
- MARYLAND STONE, INC. Buckeystown, MD0000002402100413
- MASONIC TEMPLE Frederick (Historical), MD0000002402100261
- MCCALL MILLWORKM INC Woodsboro, MD0000002402100298
- MCCORMICK PAINT WORKS Frederick (Historical), MD0000002402100212
- MCCUTCHEN APPLE PRODUCTS/4 WATER ST Frederick (Historical), MD0000002402100199
- MCCUTCHEON APPLE PRODUCTS Frederick (Historical), MD0000002402100120
- MDA-ANIMAL HEALTH LAB-FREDERICK Frederick (Historical), MD0000002402100394
- MENAGERIE FURNITURE REFINISHING Frederick (Historical), MD0000002402100372
- MERIDIAN NURSING HOME Frederick (Historical), MD0000002402100060
- METLFAB INC Frederick (Historical), MD0000002402100391
- METRAPLEX Frederick (Historical), MD0000002402100338
- MID-ATLANTIC COCA COLA Frederick (Historical), MD0000002402100017
- MIDDLETOWN AREA II BUILDING Middletown, MD0000002402100073
- MIDDLETOWN ELEMENTARY SCHOOL Middletown, MD0000002402100235
- MIDDLETOWN HIGH SCHOOL Middletown, MD0000002402100074
- MIDDLETOWN HIGH SCHOOL Middletown, MD0000002402100731
- MIDDLETOWN MIDDLE SCHOOL Middletown, MD0000002402100149
- MIKE'S AUTO BODY Thurmont, MD0000002402100463
- MILLER ASPHALT - LEGORE Keymar, MD0000002402100409
- MILLER, CHARLES T., INC Frederick (Historical), MD0000002402100531
- MISCELLANEOUS METALS Frederick (Historical), MD0000002402100297
- MODEL GARAGE Frederick (Historical), MD0000002402100191
- MODERN AUTO BODY Frederick (Historical), MD0000002402100455
- MODERN AUTO BODY - FRANKLIN STREET Frederick (Historical), MD0000002402100373
- MONACACY ELEMENTARY SCHOOL Frederick (Historical), MD0000002402100243
- MONACACY MIDDLE SCHOOL Frederick (Historical), MD0000002402100182
- MONTEVUE HOME (COUNTY) Frederick (Historical), MD0000002402100104
- MONUMENTAL CONSTRUCTION Jefferson, MD0000002402100479
- MORNINGSTAR FOODS, INC. Frederick (Historical), MD0000002402100049
- MOSER, EVERETT V. INCORPORATED Middletown, MD0000002402100401
- MOTHER SETON SCHOOL Emmitsburg, MD0000002402100014
- MOUNT SAINT MARY'S COLLEGE Emmitsburg, MD0000002402100140
- MOUNTAINGATE CONVENIENCE STORE Thurmont, MD0000002402100218
- MT. PLEASANT GRAIN ELEVATOR Walkersville, MD0000002402100123
- MTM CONVENIENCE STORE GAS STATION Frederick (Historical), MD0000002402100527
- MYERSVILLE SCHOOL Myersville, MD0000002402100106
- MYERSVILLE TOWN HALL Myersville, MD0000002402100075
- NATIONAL EMERGENCY TRAINING CENTER Emmitsburg, MD0000002402100709
- NAVAL SUPPORT FACIL Thurmont, MD0000002402100138
- NEW ERA CUSTON DESIGN & CABINET WORKS Frederick (Historical), MD0000002402100634
- NEW MARKET ELEMENTARY SCHOOL New Market, MD0000002402100076
- NEW MARKET MIDDLE SCHOOL New Market, MD0000002402100223
- NIBC FORT DETRICK (NIBC CENTRAL UTILITY PLANT) Fort Detrick, MD0000002402100623
- NORTH FREDERICK ELEMENTARY SCHOOL Frederick (Historical), MD0000002402100078
- NORTHAMPTON MANOR NURSING HOME Frederick (Historical), MD0000002402100190
- OLIVE GARDEN-SPECTRUM Frederick (Historical), MD0000002402100445
- ONE STEP DELI Point Of Rocks, MD0000002402100417
- ORCHARD GROVE ELEMENTARY SCHOOL Frederick (Historical), MD0000002402100430
- PACEMAKER PRESS, INC. Frederick (Historical), MD0000002402100366
- PAM ENGINEERING Frederick (Historical), MD0000002402100292
- PARKER, J. WILLIAM & SON Frederick (Historical), MD0000002402100478
- PARKWAY ELEMENTARY SCHOOL Frederick (Historical), MD0000002402100241
- PETERSVILLE SERVICE CENTER Knoxville, MD0000002402100509
- PLEASANTS CONSTRUCTION, INC. Frederick, MD0000002402100037
- PRECISION AUTOBODY Frederick (Historical), MD0000002402100395
- PREFERRED AUTOBODY Frederick (Historical), MD0000002402100360
- PRITT'S AUTO BODY Frederick (Historical), MD0000002402100593
- PROSPECT CLEANERS Frederick (Historical), MD0000002402100231
- QUALITY COLLISION REPAIR Frederick (Historical), MD0000002402100314
- RAINBOW CLEANERS Frederick (Historical), MD0000002402100524
- RAMCORP INTERNATIONAL Frederick (Historical), MD0000002402100415
- RED LOBSTER - FREDERICK Frederick (Historical), MD0000002402100453
- REDLAND BRICK Rocky Ridge, MD0000002402100027
- REICHS FORD LANDFILL Frederick, MD0000002402100419
- RESTHAVEN MEMORIAL GARDENS Frederick (Historical), MD0000002402100194
- RF BODYWORKS Frederick (Historical), MD0000002402100210
- RIVERSIDE MARKET PLACE-EXXON Frederick (Historical), MD0000002402100407
- ROBERTS ELECTRIC MOTORS Frederick (Historical), MD0000002402100422
- ROSE ENCLOSURES Frederick (Historical), MD0000002402100283
- ROSE HILL MANOR PARK Frederick (Historical), MD0000002402100375
- ROSEMONT SERVICE CENTER Frederick (Historical), MD0000002402100513
- ROTOREX COMPANY Walkersville, MD0000002402100132
- RR DONNELLEY COMPANY Thurmont, MD0000002402100010
- RUDY, RICHARD B., INC. Frederick (Historical), MD0000002402100269
- S.W. BARRICK & SONS, INC.-BARRICK QUARRY Woodsboro, MD0000002402100001
- SABILLASVILLE ELEMENTARY SCHOOL Sabillasville, MD0000002402100079
- SAIC-FREDERICK, INC. Frederick (Historical), MD0000002402100606
- SAM'S CLUB STORE - GAS Frederick (Historical), MD0000002402100700
- SEARS ROEBUCK Frederick (Historical), MD0000002402100173
- SERVICE CLEANERS Frederick (Historical), MD0000002402100473
- SERVICE MERCHANDISE Frederick (Historical), MD0000002402100134
- SHA MAINTENANCE & GAS STATION Frederick (Historical), MD0000002402100353
- SHARPE'S FLOWERS Frederick (Historical), MD0000002402100018
- SHEETZ Frederick (Historical), MD0000002402100487
- SHEETZ Frederick (Historical), MD0000002402100488
- SHEETZ Walkersville, MD0000002402100492
- SHEETZ Knoxville, MD0000002402100493
- SHEETZ Thurmont, MD0000002402100494
- SHEETZ Frederick (Historical), MD0000002402100496
- SHEETZ STORE #519 Frederick (Historical), MD0000002402100722
- SHELL Frederick (Historical), MD0000002402100521
- SHELL GAS STATION Frederick (Historical), MD0000002402100244
- SHELL GAS STATION Jefferson, MD0000002402100537
- SHONEY'S-PATRICK STREET, WEST Frederick (Historical), MD0000002402100205
- SHOOKSTOWN MOTOR SPORTS Frederick (Historical), MD0000002402100384
- SOLAREX - UNIT OF AMOCO/ENRON SOLAR Frederick (Historical), MD0000002402100211
- SOUTH FREDERICK-BLDG. B Frederick (Historical), MD0000002402100080
- SOUTH MOUNTAIN COLLISION CENTER Middletown, MD0000002402100675
- SOUTH SETON AUTO REPAIR Emmitsburg, MD0000002402100295
- SOUTH STREET READY MIX CONCRETE Frederick (Historical), MD0000002402100002
- SOUTHERN STATES COOP. - WOODSBORO Woodsboro, MD0000002402100116
- SOUTHERN STATES COOP.-FREDERICK Frederick (Historical), MD0000002402100130
- SOUTHERN STATES GAS STATION Frederick (Historical), MD0000002402100436
- SPRING RIDGE CLEANERS Frederick (Historical), MD0000002402100449
- SPRING RIDGE ELEMENTARY SCHOOL Frederick (Historical), MD0000002402100285
- ST JOSEPH'S PROVINCIAL HOUSE Emmitsburg, MD0000002402100011
- ST. JOHN'S ROMAN CATHOLIC CHURCH Frederick (Historical), MD0000002402100031
- ST. PETER'S PARISH CENTER Libertytown, MD0000002402100368
- STAMBAUGH'S BODY & PAINT SHOP Rocky Ridge, MD0000002402100351
- STATE FARM INSURANCE Frederick (Historical), MD0000002402100035
- STAUFFER FUNERAL HOMES, PA Frederick (Historical), MD0000002402100547
- STUDIO 20 Frederick (Historical), MD0000002402100289
- STUP'S GARAGE Frederick (Historical), MD0000002402100362
- SUMMERS, H.C. Jefferson, MD0000002402100471
- SUNOCO Myersville, MD0000002402100421
- SUNOCO Frederick (Historical), MD0000002402100427
- SUPERIOR CONCRETE Frederick (Historical), MD0000002402100023
- TAMKO BUILDING PRODUCTS LLC Frederick, MD0000002402100172
- TATE CHRYSLER PLYMOUTH Frederick (Historical), MD0000002402100250
- TEC, INC. Frederick (Historical), MD0000002402100538
- THURMONT COOPERATIVE Thurmont, MD0000002402100115
- THURMONT ELEMENTARY SCHOOL Thurmont, MD0000002402100081
- THURMONT GAS Thurmont, MD0000002402100506
- THURMONT MIDDLE SCHOOL Thurmont, MD0000002402100072
- THURMONT SHOE Thurmont, MD0000002402100030
- TOWN WELL NO. 7 Thurmont, MD0000002402100098
- TRANS-TECH - 4510 METROPOLITAN COURT Frederick (Historical), MD0000002402100365
- TRANS-TECH-5520 ADAMSTOWN ROAD Adamstown, MD0000002402100099
- U.S. POST OFFICE-FREDERICK Frederick (Historical), MD0000002402100094
- UNITED PARCEL SERVICES Frederick (Historical), MD0000002402100572
- UNITED PRESBYTERIAN CHURCH Frederick (Historical), MD0000002402100135
- URBANA ELEMENTARY SCHOOL Frederick (Historical), MD0000002402100083
- URBANA HIGH SCHOOL Urbana, MD0000002402100411
- VALLEY ELEMENTARY SCHOOL Jefferson, MD0000002402100068
- VISITATION ACADEMY Frederick (Historical), MD0000002402100262
- VOCATIONAL TECHNICAL CENTER Frederick (Historical), MD0000002402100165
- WALKERSVILLE ELEMENTARY (BLDG A) Walkersville, MD0000002402100136
- WALKERSVILLE ELEMENTARY (BLDG B) Walkersville, MD0000002402100193
- WALKERSVILLE HIGH SCHOOL Walkersville, MD0000002402100160
- WALKERSVILLE MIDDLE SCHOOL Walkersville, MD0000002402100085
- WALTER KING PLUMBING Frederick (Historical), MD0000002402100638
- WATERSIDE CLEANERS Frederick (Historical), MD0000002402100480
- WAVERLY ELEMENTARY SCHOOL Frederick (Historical), MD0000002402100086
- WAWA FOOD MARKET Frederick (Historical), MD0000002402100523
- WEINBERG CENTER FOR THE ARTS Frederick (Historical), MD0000002402100043
- WERRES CORPORATION Frederick (Historical), MD0000002402100296
- WESTRIDGE CLEANERS Frederick (Historical), MD0000002402100239
- WILLARD AGRI-SERVICE Frederick (Historical), MD0000002402100341
- WINDRIDGE FARM Frederick (Historical), MD0000002402100418
- WINDSOR KNOLLS MIDDLE SCHOOL Ijamsville, MD0000002402100393
- WOLFSVILLE ELEMENTARY SCHOOL Wolfsville, MD0000002402100088
- WOODSBORO READY-MIX CONCRETE PLANT Woodsboro, MD0000002402100581
- Y M C A - FREDERICK COUNTY Frederick (Historical), MD0000002402100040
- YELLOW SPRINGS ELEMENTARY SCHOOL Woodsboro, MD0000002402100090
- YORK BUILDING PRODUCTS Frederick (Historical), MD0000002402100174
- ZIMMERMAN'S FLORIST Frederick (Historical), MD0000002402100303
- ZION LUTHERAN CHURCH Middletown, MD0000002402100047
- ZIPS DRY CLEANERS Frederick (Historical), MD0000002402100603
Figures from EPA’s ICIS-AIR facility file.