| 16TH STREET JUNCTION RECEIVER (LINE 4-1-4) | Hazardous waste | — | — | — | No Violation Identified |
| ADM GRAIN CO / ELEVATORS A AND B | Air | — | — | — | No Violation Identified |
| ADM GRAIN CO / ELEVATORS Y AND Z | Air | — | — | — | No Violation Identified |
| ADM GRAIN-ELEVATOR Z | Water | 3 | 1 | — | No Violation Identified |
| ADM MILLING COMPANY | Air, Hazardous waste | — | — | — | No Violation Identified |
| ADVANCE FOOD COMPANY, LLC - PINE STREET | Hazardous waste | — | — | — | No Violation Identified |
| ADVANCED PIERRE FOODS INC / ENTERPRISE COMPLEX | Air | — | — | — | No Violation Identified |
| ADVANCEPIERRE FOODS | — | — | — | — | — |
| ADVANCEPIERRE FOODS, INC. 54TH PLANT | Air, Hazardous waste | 1 | — | — | No Violation Identified |
| ADVANCEPIERRE FOODS, INC. WILLOW PLANT | Hazardous waste | — | — | — | No Violation Identified |
| ADVANCEPIERRE FOODS-ENTERPRISE PRODUCTION | Hazardous waste | — | — | — | No Violation Identified |
| AIRCRAFT STRUCTURES INC. | Hazardous waste | 1 | — | — | No Violation Identified |
| AMAZON.COM SERVICES LLC - XWI5 | Hazardous waste | — | — | — | No Violation Identified |
| AMERICAN TOWERS LLC / 35372 OXFORD OK | Air | — | — | — | No Violation Identified |
| AMERICAN TOWERS LLC / ENID 2 35373 | Air | — | — | — | No Violation Identified |
| AMERICAN TOWERS LLC / ROSE ROCK OK 35370 | Air | — | — | — | No Violation Identified |
| ASPEN DENTAL | Hazardous waste | — | — | — | No Violation Identified |
| BAKER HUGHES QUINN PUMPS A GE COMPANY | Hazardous waste | — | — | — | No Violation Identified |
| BAKER PETROLITE ENID | Hazardous waste | — | — | — | No Violation Identified |
| BAKERS ALTERNATOR & STARTER INC. | Hazardous waste | — | — | — | No Violation Identified |
| BNSF RAILWAY CO / ENID YARD | Air | — | — | — | No Violation Identified |
| BOOKER TRANSMISSION INC | Hazardous waste | — | — | — | No Violation Identified |
| BRECKINRIDGE PWA-CL2 STATION WELL 3 | Drinking water | 1 | 1 | — | Violation Identified |
| BRECKINRIDGE WIND ENERGY CENTER | Hazardous waste | — | — | — | No Violation Identified |
| CAMELOT CLEANERS | Hazardous waste | — | — | — | No Violation Identified |
| CELLULAR NETWORK PARTNERSHIP DBA PIONEE / HARRISON ST | Air | — | — | — | No Violation Identified |
| CHESTERFIELD CYLINDER CO | Hazardous waste | — | — | — | No Violation Identified |
| CITY OF ENID WATER PLANT #1 PWSID 2002412 | Hazardous waste | — | — | — | No Violation Identified |
| CITY OF ENID WATER PLANT #2 PWSID 2002445 | Air | — | 2 | $800 | No Violation Identified |
| CONSOLIDATED GRAIN AND BARGE CO / ENID 30TH STREET TERMINAL | Air | — | — | — | No Violation Identified |
| CUMMINS CONSTRUCTION CO INC / PLANT 2721 ENID | Air | 1 | — | — | No Violation Identified |
| CVS PHARMACY #10102 | Hazardous waste | — | — | — | No Violation Identified |
| DILLARDS OAKWOOD MALL | Hazardous waste | — | — | — | No Violation Identified |
| DIVERSIFIED PRODUCTION LLC / BARBEE 2105 1LMH 4 GERKEN 2205 1UMH 33 | Air | — | — | — | No Violation Identified |
| DIVERSIFIED PRODUCTION LLC / BROWNING 2205 1UMH 22 GLOCK 2205 1LMH | Air | — | — | — | No Violation Identified |
| DIVERSIFIED PRODUCTION LLC / COTTONWOOD 2205 1UMH 34 DOGWOOD 2205 1 | Air | — | — | — | No Violation Identified |
| DIVERSIFIED PRODUCTION LLC / FENDEROSA 2107 1LMH 4 | Air | — | — | — | No Violation Identified |
| DIVERSIFIED PRODUCTION LLC / KIMBER 2106 1MOH 2 SAVAGE 2106 1MH 11 | Air | — | — | — | No Violation Identified |
| DIVERSIFIED PRODUCTION LLC / LEE 1MH 1 | Air | — | — | — | No Violation Identified |
| DIVERSIFIED PRODUCTION LLC / MARKES 1 MH 4 | Air | — | — | — | No Violation Identified |
| DIVERSIFIED PRODUCTION LLC / REMINGTON 2205 1LMH 32 RUGER 2205 1LMH | Air | — | — | — | No Violation Identified |
| ECK AUTO REPAIR | Hazardous waste | — | — | — | No Violation Identified |
| ENABLE MIDSTREAM PARTNERS- ENID FACILITY | Hazardous waste | — | — | — | No Violation Identified |
| ENID BATCH PLANT | — | — | — | — | — |
| ENID COMPRESSOR STATION | Air, Hazardous waste | — | — | — | No Violation Identified |
| ENID DISTRIBUTION YARD | Hazardous waste | — | — | — | No Violation Identified |
| ENID MUNICIPAL LANDFILL | Air | — | — | — | No Violation Identified |
| ENID TERMINAL | Air, Hazardous waste | 1 | — | — | No Violation Identified |
| ENID, CITY OF | Water | 10 | 2 | $10,000 | Violation Identified |
| FAMILY DOLLAR # 2065 | Hazardous waste | — | — | — | No Violation Identified |
| FAMILY DOLLAR #5804 | Hazardous waste | — | — | — | No Violation Identified |
| FEDERAL AVIATION ADMINISTRATION / WDG SX WCR22 SOUTHWEST OKLAHOMA SSC | Air | — | — | — | No Violation Identified |
| FEDERAL EXPRESS - ZEND | Hazardous waste | — | — | — | No Violation Identified |
| FORMENTERA OPERATIONS / HERBERT 1 3H | Air | — | — | — | No Violation Identified |
| FORMER CHAMPLIN REFINERY | Hazardous waste | 2 | — | — | No Violation Identified |
| FORMER TRIANGLE INDUSTRIES INC | Hazardous waste | 1 | — | — | No Violation Identified |
| FRANKLIN BODY SHOP | Hazardous waste | — | — | — | No Violation Identified |
| GARFIELD CO RWD # 4-CL2 STATION | Drinking water | 2 | — | — | Violation Identified |
| GEFCO INC/ENID FABRICATION FAC | Air, Hazardous waste | — | — | — | No Violation Identified |
| GOODPASTURE INC / ENID GRAIN ELEVATOR | Air | — | — | — | No Violation Identified |
| GROENDYKE TRANSPORT INC | Hazardous waste | — | — | — | No Violation Identified |
| HACKNEY LADISH INC ENID OK | Hazardous waste | — | — | — | No Violation Identified |
| HAHNS CLEANERS | Hazardous waste | 1 | — | — | No Violation Identified |
| HAMM & PHILLIPS SERVICE CO | Hazardous waste | — | — | — | No Violation Identified |
| HERITAGE CLNR INC / 702 W RANDOLPH HERITAGE CLEANERS | Air | 1 | — | — | No Violation Identified |
| IMPACT ENERGY OPERATING LLC / OTTERHOUND 3 8H | Air | — | — | — | No Violation Identified |
| INTEGRIS BASS BAPTIST HEALTH CENTER | Hazardous waste | — | — | — | No Violation Identified |
| JACKSONS OF ENID | Hazardous waste | — | — | — | No Violation Identified |
| JANZEN OLDS-GMC INC. | Hazardous waste | — | — | — | No Violation Identified |
| JOANNYS 66 SVC | Hazardous waste | — | — | — | No Violation Identified |
| KIRKPATRICK OIL CO / BUTLER 1 1 | Air | — | — | — | No Violation Identified |
| KIRKPATRICK OIL CO / OBX 1 2 | Air | — | — | — | No Violation Identified |
| KIRKPATRICK OIL CO / PAYNE 1 1 | Air | — | — | — | No Violation Identified |
| KOCH FERTILIZER ENID, LLC | Air, Water, Hazardous waste | 2 | 2 | $30,000 | No Violation Identified |
| KOCH FERTILIZER ENID, LLC | Water | 6 | 3 | — | No Violation Identified |
| KOCH NITORGEN LOCATION SPILL CLEAN UP BY GE WATER & PROCESS TECHNOLOGIES | Hazardous waste | — | — | — | No Violation Identified |
| LOVES TRAVEL STOPS AND COUNTRY STORES I / LOVES TRAVEL STOP 630 | Air | — | — | — | No Violation Identified |
| LOWE'S OF ENID, OK #205 | Hazardous waste | — | 2 | $141,730 | No Violation Identified |
| LUCKINBILL IN ENID | Hazardous waste | — | — | — | No Violation Identified |
| LYLES PAINT & BODY SHOP | Hazardous waste | 1 | — | — | No Violation Identified |
| MACKS TRANSMISSION | Hazardous waste | 1 | — | — | No Violation Identified |
| MANUEL PAINT & BODY | Hazardous waste | — | — | — | No Violation Identified |
| MARSAU ENTERPRISES, INC. | Hazardous waste | — | — | — | No Violation Identified |
| MERLIN'S BODY SHOP | Hazardous waste | 1 | — | — | No Violation Identified |
| MID CONTINENT PACKAGING INC | Hazardous waste | 1 | — | — | No Violation Identified |
| MIDWAY CLEANERS | Hazardous waste | — | — | — | No Violation Identified |
| MUSTANG GAS PROD LL/SPRING VALLEY GAS PL | Air | 1 | — | — | No Violation Identified |
| MUSTANG GAS PROD LLC/HUMPHREY STA | Air | — | — | — | No Violation Identified |
| MUSTANG GAS PRODUCTS LLC / CHUKAR COMPRESSOR STATION | Air | 1 | — | — | No Violation Identified |
| MUSTANG GAS PRODUCTS LLC / COYOTE COMPRESSOR STATION | Air | — | — | — | No Violation Identified |
| NEW CINGULAR WIRELESS PCS LLC DBA AT AN / 10036429 EAST RANDOLPH | Air | — | — | — | No Violation Identified |
| NEW CINGULAR WIRELESS PCS LLC DBA AT AN / 10127054 DBS LAHOMA | Air | — | — | — | No Violation Identified |
| NEW CINGULAR WIRELESS PCS LLC DBA AT AN / A HUDSON ENTERPRISES RL 14394439 | Air | — | — | — | No Violation Identified |
| NEW CINGULAR WIRELESS PCS LLC DBA AT AN / A NEW HOPE RL 13417839 | Air | — | — | — | No Violation Identified |
| NEW CINGULAR WIRELESS PCS LLC DBA AT AN / CENTRAL ENID 13417312 | Air | — | — | — | No Violation Identified |
| NEW CINGULAR WIRELESS PCS LLC DBA AT AN / CHESTNUT- ENID CELL TOWER CLLC10125395 | Air | — | — | — | No Violation Identified |
| NEW CINGULAR WIRELESS PCS LLC DBA AT AN / DBS BRECKENRIDGE 10125409 | Air | — | — | — | No Violation Identified |
| NEW CINGULAR WIRELESS PCS LLC DBA AT AN / EAST CARRIER RD 10036438 | Air | — | — | — | No Violation Identified |
| NEW CINGULAR WIRELESS PCS LLC DBA AT AN / ENID DT EAST 14563663 | Air | — | — | — | No Violation Identified |
| NEW CINGULAR WIRELESS PCS LLC DBA AT AN / OKL01523 FA16299877 | Air | — | — | — | No Violation Identified |
| NEW CINGULAR WIRELESS PCS LLC DBA AT AN / OKL01568 15718063 | Air | — | — | — | No Violation Identified |
| NEW CINGULAR WIRELESS PCS LLC DBA AT AN / OKL01686 15452919 | Air | — | — | — | No Violation Identified |
| NEW CINGULAR WIRELESS PCS LLC DBA AT AN / SUNNYBROOK OK1520 | Air | — | — | — | No Violation Identified |
| NEW CINGULAR WIRELESS PCS LLC DBA AT AN / WEST ENID OK1518 | Air | — | — | — | No Violation Identified |
| NEXTERA ENERGY RESOURCES LLC / BRECKINRIDGE WIND ENERGY CENTER | Air | — | — | — | No Violation Identified |
| NORTHCUTT CHEV CO INC | Hazardous waste | — | — | — | No Violation Identified |
| O'REILLY AUTO PART STORE 188 | Hazardous waste | — | — | — | No Violation Identified |
| OG AND E - TD AND TS / ENID MW TOWER | Air | — | — | — | No Violation Identified |
| OG AND E - TD AND TS / HEMLOCK SUBSTATION ENID MICROWAVE FACI | Air | — | — | — | No Violation Identified |
| OG AND E - TD AND TS / OGE ENID SVC CTR | Air | — | — | — | No Violation Identified |
| OG AND E/ENID STA | Air, Hazardous waste | — | — | — | No Violation Identified |
| ONEOK - OGT KOCH N2 RECEIVER / FILTER | Hazardous waste | — | — | — | No Violation Identified |
| ONEOK - OGT - DISHMAN JUNCTION | Hazardous waste | — | — | — | No Violation Identified |
| OREILLY AUTOMOTIVE INC | Hazardous waste | — | — | — | No Violation Identified |
| OXFORD CLNR / 130 E RANDOLPH OXFORD CLNR | Air, Hazardous waste | — | — | — | No Violation Identified |
| PDQ PRINTING | Hazardous waste | — | — | — | No Violation Identified |
| PELAGIC TANK LLC | Hazardous waste | — | — | — | No Violation Identified |
| PENQUIN CLNRS INC | Hazardous waste | — | — | — | No Violation Identified |
| PENSKE TRUCK LEASING CO LP | Hazardous waste | — | — | — | No Violation Identified |
| PILOT THOMAS LOGISTICS ENID TERMINAL | Hazardous waste | — | — | — | No Violation Identified |
| PIONEER TELEPHONE COOP INC / ST MARYS II | Air | — | — | — | No Violation Identified |
| PT CENTRAL MACHINE AND TOOL COMPANY | Air, Hazardous waste | — | — | — | No Violation Identified |
| QXO - BRANCH #1933 ENID | Hazardous waste | — | — | — | No Violation Identified |
| RLS INC DBA STEVENS FORD | Hazardous waste | — | — | — | No Violation Identified |
| ROBERTS BODY SHOP | Hazardous waste | — | — | — | No Violation Identified |
| ROBERTS RANCH OF OKLAHOMA LLC / ENID FEEDMILL | Air | — | — | — | No Violation Identified |
| RYDER TRUCK RENTAL INC | Hazardous waste | — | — | — | No Violation Identified |
| S CROW PAINTING INC | Hazardous waste | — | — | — | No Violation Identified |
| SANDRIDGE EXPLORATION AND PRODUCTION LL / BRAINARD 1 35H | Air | — | — | — | No Violation Identified |
| SANDRIDGE EXPLORATION AND PRODUCTION LL / CHARLENE 2305 1 29H | Air | — | — | — | No Violation Identified |
| SANDRIDGE EXPLORATION AND PRODUCTION LL / CROUSE 3 1H MESSENGER FARMS 1 12H DRYE | Air | — | — | — | No Violation Identified |
| SANDRIDGE EXPLORATION AND PRODUCTION LL / DORIS 3 27H RG 3 22H RG 4 22H DORIS 4 | Air | — | — | — | No Violation Identified |
| SANDRIDGE EXPLORATION AND PRODUCTION LL / DRYER 2407 1 6H DRYER 2407 2 6H DRYER | Air | — | — | — | No Violation Identified |
| SANDRIDGE EXPLORATION AND PRODUCTION LL / GIGOUX 1 26 | Air | — | — | — | No Violation Identified |
| SANDRIDGE EXPLORATION AND PRODUCTION LL / HENRY 1 23H DIEL 1 14H DIEL 2 14H HENR | Air | — | — | — | No Violation Identified |
| SANDRIDGE EXPLORATION AND PRODUCTION LL / IDA 1 34H | Air | — | — | — | No Violation Identified |
| SANDRIDGE EXPLORATION AND PRODUCTION LL / LANDRUM 2305 1 30H31H | Air | — | — | — | No Violation Identified |
| SANDRIDGE EXPLORATION AND PRODUCTION LL / LOMA 1 1 SWD | Air | — | — | — | No Violation Identified |
| SANDRIDGE EXPLORATION AND PRODUCTION LL / MB REALTY 2307 1 3H MB REALTY 2307 2 3 | Air | — | — | — | No Violation Identified |
| SANDRIDGE EXPLORATION AND PRODUCTION LL / NELSON 1 27H | Air | — | — | — | No Violation Identified |
| SANDRIDGE EXPLORATION AND PRODUCTION LL / OKLAHOMA 2408 1 36H BOWERS 2408 1 25H | Air | — | — | — | No Violation Identified |
| SANDRIDGE EXPLORATION AND PRODUCTION LL / PETR 2305 1 33H | Air | — | — | — | No Violation Identified |
| SANDRIDGE EXPLORATION AND PRODUCTION LL / REGIER 1 13 | Air | — | — | — | No Violation Identified |
| SANDRIDGE EXPLORATION AND PRODUCTION LL / RONALD 2407 1 36H | Air | — | — | — | No Violation Identified |
| SANDRIDGE EXPLORATION AND PRODUCTION LL / RUTH 1 30H | Air | — | — | — | No Violation Identified |
| SANDRIDGE EXPLORATION AND PRODUCTION LL / WARD 1 34H | Air | — | — | — | No Violation Identified |
| SMITH BODY SHOP | Hazardous waste | — | — | — | No Violation Identified |
| SPOT SHOP | Hazardous waste | — | — | — | No Violation Identified |
| ST. MARY'S REGIONAL MEDICAL CENTER | Hazardous waste | — | — | — | No Violation Identified |
| STATE SCHOOL STATION | Air | 2 | — | — | No Violation Identified |
| STEVENS FORD | Hazardous waste | — | — | — | No Violation Identified |
| STEVENS LINCOLN MERCURY FORD BODY SHOP | Hazardous waste | — | — | — | No Violation Identified |
| SUN COAST RESOURCES- ENID | Water | — | — | — | — |
| SUNOCO PIPELINE LP/ENID WEST CRUDE OIL | Air | — | — | — | No Violation Identified |
| SUPERIOR MIDSTREAM LLC / HUNTER BOOSTER STATION | Air | 1 | — | — | No Violation Identified |
| TARGA PIPELINE MIDCONTINENT WESTOK LLC / HILLSDALE COMPRESSOR STATION | Air | 1 | — | — | No Violation Identified |
| TMOBILE CENTRAL LLC / CELL SITE OKO1612A | Air | — | — | — | No Violation Identified |
| TMOBILE CENTRAL LLC / ENID W OK01606A | Air | — | — | — | No Violation Identified |
| TMOBILE CENTRAL LLC / OK02406C VANCE AFB | Air | — | — | — | No Violation Identified |
| UNITED PARCEL SERVICE, INC. (ENID) | Hazardous waste | — | — | — | No Violation Identified |
| US ARMY RESERVE CENTER | Hazardous waste | — | — | — | No Violation Identified |
| VANCE AIR FORCE BASE | Air, Hazardous waste, Drinking water | 7 | — | — | No Violation Identified |
| VERIZON WIRELESS / CLEVELAND II OK | Air | — | — | — | No Violation Identified |
| VERIZON WIRELESS / ENID DT OK | Air | — | — | — | No Violation Identified |
| VERIZON WIRELESS / ENID EAST OK | Air | — | — | — | No Violation Identified |
| VERIZON WIRELESS / ENID UNIV OK | Air | — | — | — | No Violation Identified |
| VERIZON WIRELESS / ENID WEST OK | Air | — | — | — | No Violation Identified |
| VERIZON WIRELESS / GARRIOTT OK | Air | — | — | — | No Violation Identified |
| VERIZON WIRELESS / PURDUE OK | Air | — | — | — | No Violation Identified |
| WAL MART STORES EAST LP / WALMART NEIGHBORHOOD MARKET 4390 | Air | — | — | — | No Violation Identified |
| WALGREENS #11718 | Hazardous waste | — | — | — | No Violation Identified |
| WALGREENS #5531 | Hazardous waste | — | — | — | No Violation Identified |
| WALMART NEIGHBORHOOD MARKET #4390 | Hazardous waste | — | — | — | No Violation Identified |
| WALMART SUPERCENTER #499 | Hazardous waste | — | — | — | No Violation Identified |