EPA Air · stack tests by state, industry and year
Oil and gas extraction (NAICS 2111): stack tests in Pennsylvania, 2025
- 455Stack tests
A stack test measures what a source actually emits, at the stack, against the limit in its permit. Each row is one stack test recorded during 2025 at a Pennsylvania source whose primary industry code is NAICS 2111. A facility filing more than one industry code is counted under the first one on its record.
Oil and gas extraction (NAICS 2111) in Pennsylvania, other years
Other industries in Pennsylvania, 2025
- Pipeline transportation (NAICS 4862) 88
- Utilities (NAICS 2211) 60
- Mining support (NAICS 2131) 41
- Waste management and remediation (NAICS 5622) 30
- Petroleum and coal products manufacturing (NAICS 3241) 19
- Nonmetallic mineral product manufacturing (NAICS 3273) 18
- Primary metal manufacturing (NAICS 3311) 16
- Primary metal manufacturing (NAICS 3312) 15
- Merchant wholesalers, nondurable goods (NAICS 4247) 15
- Utilities (NAICS 2213) 12
- Chemical manufacturing (NAICS 3251) 11
- Plastics and rubber products manufacturing (NAICS 3261) 11
- Electrical equipment and appliance manufacturing (NAICS 3359) 11
- Educational services (NAICS 6113) 9
- Paper manufacturing (NAICS 3221) 9
- Chemical manufacturing (NAICS 3252) 8
- Utilities (NAICS 2212) 6
- Primary metal manufacturing (NAICS 3314) 6
- Chemical manufacturing (NAICS 3254) 6
- Printing and related support (NAICS 3231) 6
- Nonmetallic mineral product manufacturing (NAICS 3272) 5
- Mining and quarrying (NAICS 2123) 5
- Hospitals (NAICS 6221) 5
- Food manufacturing (NAICS 3118) 4
- Nonmetallic mineral product manufacturing (NAICS 3271) 4
- Primary metal manufacturing (NAICS 3313) 4
- Merchant wholesalers, durable goods (NAICS 4233) 4
- Fabricated metal product manufacturing (NAICS 3324) 4
- Primary metal manufacturing (NAICS 3315) 4
- Mining and quarrying (NAICS 2121) 4
- Machinery manufacturing (NAICS 3339) 3
- Fabricated metal product manufacturing (NAICS 3321) 3
- Administration of environmental programs (NAICS 9241) 3
- National security and international affairs (NAICS 9281) 3
- Food manufacturing (NAICS 3112) 3
- Chemical manufacturing (NAICS 3259) 3
Air-emissions stack tests recorded in Pennsylvania, 2025
| Date | Facility | Where | Kind | Agency |
|---|---|---|---|---|
| 2025-12-30 | CHIEF OIL & GAS TAGUE WEST COMPRESSOR | TUNKHANNOCK, Wyoming, PA | Pass | State |
| 2025-12-30 | EXPAND OPERATING LLC/FOLTA BRA PAD | LACEYVILLE, Bradford, PA | Pass | State |
| 2025-12-30 | EXPAND OPERATING LLC/KATHRYN BRA PAD | WYALUSING, Bradford, PA | Pass | State |
| 2025-12-23 | PPP FUTURE DEV INC/WARREN | SUGAR GROVE, Warren, PA | Pass | State |
| 2025-12-22 | XTO ENERGY HOMER CITY PP COMP STA/INDIANA — high-priority violation on file | HOMER CITY, Indiana, PA | Pass | State |
| 2025-12-19 | MTN GATHERING LLC/JEFFERSON COMP STA | BUTLER, Butler, PA | Pass | State |
| 2025-12-19 | HILCORP ENERGY CO/JEFFERSON MONTGOMERY STA | JEFFERSON TOWNSHIP, Mercer, PA | Pass | State |
| 2025-12-18 | EXPAND OPERATING LLC/WR-64 FIONDI PAD | MONTROSE, Susquehanna, PA | Pass | State |
| 2025-12-17 | ETC NORTHEAST PIPELINE/REVOLUTION CRYO PLT | BULGER, Washington, PA | Pass | State |
| 2025-12-16 | MTN GATHERING LLC/DRY RUN COMP STA | CHAPMAN, Clinton, PA | Pass | State |
| 2025-12-16 | PIN OAK MIDSTREAM LLC/JACKSON CTR COMP STA | JACKSON CENTER, Mercer, PA | Pass | State |
| 2025-12-16 | REGENCY MARCELLUS GAS GATHERING LLC/ AUBURN STA | MESHOPPEN, Susquehanna, PA | Pass | State |
| 2025-12-12 | BLUESTONE PIPELINE CO/COMFORT LAKE COMP STA | HARMONY TWP, Susquehanna, PA | Pass | State |
| 2025-12-10 | EXPAND OPERATING LLC/SCOTT WELLPAD | NEW MILFORD, Susquehanna, PA | Pass | State |
| 2025-12-09 | PA GEN ENERGY CO LLC/TRACT 729 COMPRESSOR STATION | WATERVILLE, Lycoming, PA | Pass | State |
| 2025-12-03 | EQUITRANS LP/JEFFERSON COMP STA | LIPPINCOTT, Greene, PA | Pass | State |
| 2025-12-03 | NFG MIDSTREAM COVINGTON LLC/KINNAN 845 WELL PAD | MIDDLEBURY, Tioga, PA | Pass | State |
| 2025-12-03 | NFG MIDSTREAM COVINGTON LLC/KEENEYVILLE COMP STA | MIDDLEBURY CTR, Tioga, PA | Pass | State |
| 2025-12-02 | NFG MIDSTREAM COVINGTON LLC/FULLER 826N WELL PAD | MIDDLEBURY, Tioga, PA | Pass | State |
| 2025-12-01 | EXCO APPLACHIA MIDSTREAM LLC/CONFER COMP STA | BURNSIDE TWP, Centre, PA | Pass | State |
| 2025-12-01 | NFG MIDSTREAM COVINGTON LLC/BREON COMP STA | MANSFIELD, Tioga, PA | Pass | State |
| 2025-11-25 | ETC NORTHEAST PIPELINE LLC/BARTO COMP STA | HUGHESVILLE, Lycoming, PA | Pass | State |
| 2025-11-25 | NFG MIDSTREAM TROUT RUN LLC/TROUT RUN MTN COMP STA | TROUT RUN, Lycoming, PA | Pass | State |
| 2025-11-24 | ETC NORTHEAST PIPELINE LLC/RED BEND COMP STA | TROUT RUN, Lycoming, PA | Pass | State |
| 2025-11-24 | EMPET, D. PAD 1 | KINGSLEY, Susquehanna, PA | Pass | State |
| 2025-11-19 | EXPAND OPERATING LLC/MASSO SUS PAD | MESHOPPEN, Susquehanna, PA | Pass | State |
| 2025-11-19 | EXPAND OPERATING LLC/RU-09 HUMBERT III PAD | NEW MILFORD, Susquehanna, PA | Pass | State |
| 2025-11-19 | EXPAND OPERATING LLC/RU-20 ROMAN PAD | NEW MILFORD, Susquehanna, PA | Pass | State |
| 2025-11-18 | EXPAND OPERATING LLC/MCENANEY BRA PAD | NEW ALBANY, Bradford, PA | Pass | State |
| 2025-11-18 | HILCORP ENERGY CO/NORTH BEAVER KEPHART PROD FAC | ENON VALLEY, Lawrence, PA | Pass | State |
| 2025-11-18 | KRIEBEL MINERALS INC/ARMBURST SONY COMPRESSOR | MT PLEASANT, Westmoreland, PA | Pass | State |
| 2025-11-18 | EXPAND OPERATING LLC/DEER PARK PAD COMP STA | MEHOOPANY, Wyoming, PA | Pass | State |
| 2025-11-17 | EQT ARTEMIS MIDSTREAM LLC/ROGERS COMP STA — high-priority violation on file | NEW KENSINGTON, Westmoreland, PA | Pass | State |
| 2025-11-13 | EASTERN GAS TRANS & STORAGE/CHAMBERSBURG COMP STA | CHAMBERSBURG, Franklin, PA | Pass | State |
| 2025-11-13 | EXCO APPALACHIA MIDSTREAM LLC/SAWMILL COMP STA | KITTANNING, Armstrong, PA | Pass | State |
| 2025-11-13 | STODDARD, T. PAD 1 | KINGSLEY, Susquehanna, PA | Pass | State |
| 2025-11-13 | CRANE, J PAD 1 — high-priority violation on file | SPRINGVILLE, Susquehanna, PA | Pass | State |
| 2025-11-12 | COLUMBIA GAS TRANS CORP/WAYNESBURG COMP STA | WAYNESBURG, Greene, PA | Pass | State |
| 2025-11-12 | LPR ENERGY LLC/HENRY CLAY MIDSTREAM FAC | MARKLEYSBURG, Fayette, PA | Pass | State |
| 2025-11-12 | WILLIAMS FIELD SVC CO LLC/CHURCH COMP STA | SPRINGVILLE, Susquehanna, PA | Pass | State |
| 2025-11-12 | PA GEN ENERGY CO LLC/REED RUN STILL PAD A COMP STA — high-priority violation on file | SMETHPORT, McKean, PA | Pass | State |
| 2025-11-11 | REGENCY MARCELLUS GATHERING LLC/BRADFORD WEST COMP STA | GRANVILLE SUMMIT, Bradford, PA | Pass | State |
| 2025-11-11 | COLUMBIA GAS TRANS LLC/REDD FARM COMP STA | WASHINGTON, Washington, PA | Pass | State |
| 2025-11-11 | EXPAND OPERATING LLC/JOEGUSWA WELL PAD | DUSHORE, Sullivan, PA | Pass | State |
| 2025-11-11 | EXPAND OPERATING LLC/STONE BRA PAD | WYALUSING, Bradford, PA | Pass | State |
| 2025-11-10 | REGENCY MARCELLUS GAS GATHERING LLC/OGONTZ EAST COMP STA | JERSEY SHORE, Lycoming, PA | Pass | State |
| 2025-11-06 | EXPAND OPERATING LLC/INNES PAD | NEW MILFORD, Susquehanna, PA | Pass | State |
| 2025-11-06 | CRANE, J PAD 1 — high-priority violation on file | SPRINGVILLE, Susquehanna, PA | Pending | State |
| 2025-11-06 | DIAZ FAMILY, LP PAD 2 | MONTROSE, Susquehanna, PA | Pass | State |
| 2025-11-05 | SENECA RESOURCES CO LLC/SRC COMP STA | MT. JEWETT, McKean, PA | Pass | State |
| 2025-11-05 | MARKWEST LIBERTY MIDST & RESOURCES/THREE BROTHERS COMP STA | BURGETTSTOWN, Washington, PA | Pass | State |
| 2025-11-05 | UGI AUBURN GATHERING LLC/ MANNING COMPRESSOR LNG STA | MESHOPPEN, Wyoming, PA | Pass | State |
| 2025-11-04 | NFG MIDSTREAM COVINGTON LLC/SHAW COMP STA | MAINESBURG, Tioga, PA | Pending | State |
| 2025-11-04 | ROVER PIPELINE LLC/BULGER COMP STA | BULGER, Washington, PA | Pass | State |
| 2025-11-03 | RANGE RESOURCES APPALACHIA LLC/LAUREL HILL WELL PAD B | TROUT RUN, Lycoming, PA | Pass | State |
| 2025-10-28 | EQM GATHERING OPCO LLC/IO COMP STA | WAYNESBURG, Greene, PA | Pass | State |
| 2025-10-28 | REPSOL OIL 7 GAS USA LLC/BENNET COMP STA | LERAYSVILLE, Bradford, PA | Pass | State |
| 2025-10-24 | DIVERSIFIED PROD LLC/NV 60 WELLPAD | CLAYSVILLE, Washington, PA | Pass | State |
| 2025-10-23 | REGENCY MARCELLUS GAS GATHERING/CANOE RUN COMP STA | SALLADASBURG, Lycoming, PA | Pass | State |
| 2025-10-23 | WILLIAMS FIELD SVC CO LLC/LATHROP COMP STA | SPRINGVILLE, Susquehanna, PA | Pass | State |
| 2025-10-23 | REGENCY MARCELLUS GAS GATHERING LLC/OGONTZ WEST COMP STA | CUMMINS TWP, Lycoming, PA | Pass | State |
| 2025-10-22 | PEOPLES NATURAL GAS/EGRY STA | CLARKSBURG, Indiana, PA | Pass | State |
| 2025-10-22 | MARKWEST LIBERTY BLUESTONE LLC/VOLL COMP STA | EVANS CITY, Butler, PA | Pass | State |
| 2025-10-22 | BKV OPERATING LLC/BAKER WEST COMPRESSOR STATION | FORREST LAKE TWP, Susquehanna, PA | Pass | State |
| 2025-10-22 | EXPAND OPER LLC/ROLAND BRA PAD | WILMONT, Bradford, PA | Pass | State |
| 2025-10-22 | CABOT OIL & GAS CORP/FOLTZ J PAD 1 | HOP BOTTOM, Susquehanna, PA | Pass | State |
| 2025-10-22 | EXPAND OPERATING LLC/HOLTAN SUS WELLPAD | MESHOPPEN, Susquehanna, PA | Pass | State |
| 2025-10-22 | MOORE, S. PAD 1 | MONTROSE, Susquehanna, PA | Pass | State |
| 2025-10-21 | CNX MIDSTREAM OPR CO LLC/BUCKLAND COMP STA | WIND RIDGE, Greene, PA | Pass | State |
| 2025-10-21 | EXPAND OPERATING LLC/WOOSMAN PAD | NEW MILFORD, Susquehanna, PA | Pass | State |
| 2025-10-21 | FLOWER, T. PAD 1 | MESHOPPEN, Susquehanna, PA | Pass | State |
| 2025-10-21 | WOOD, E. PAD 1 | MONTROSE, Susquehanna, PA | Pass | State |
| 2025-10-20 | EQT ARO LLC/VARGO COMP STA — high-priority violation on file | TROUT RUN, Lycoming, PA | Pass | State |
| 2025-10-20 | CABOT OIL & GAS CORP/TEDDICK, M. PAD 1 | KINGSLEY, Susquehanna, PA | Pass | State |
| 2025-10-20 | CABOT OIL & GAS CORP/JEFFERS FARMS PAD 5 | GIBSON, Susquehanna, PA | Pass | State |
| 2025-10-17 | REGENCY MARCELLUS GAS GATHERING LLC/POORMAN COMP STA | LOCK HAVEN, Clinton, PA | Pass | State |
| 2025-10-17 | REGENCY MARCELLUS GAS GATHERING LLC/POORMAN COMP STA | LOCK HAVEN, Clinton, PA | Pass | State |
| 2025-10-17 | DIVERSIFIED PROD LLC/NV 34 WELLPAD — high-priority violation on file | PROSPERITY, Washington, PA | Pass | State |
| 2025-10-16 | SUSQUEHANNA GATHERING/CDP 1 COMP STA | NEW MILFORD, Susquehanna, PA | Pass | State |
| 2025-10-16 | DIVERSIFIED PROD LLC/NINEVEH 58 WELL PAD — high-priority violation on file | PROSPERITY, Washington, PA | Pass | State |
| 2025-10-16 | HALLIDAY, A. PAD 1 | MONTROSE, Susquehanna, PA | Pass | State |
| 2025-10-15 | NFG MIDSTREAM COVINGTON LLC/STOCK 144 COMP STA | WELLSBORO, Tioga, PA | Pending | State |
| 2025-10-15 | UGI GIBRALTAR GATHERING LLC/GIBRALTAR COMP STA | CLAYSVILLE, Washington, PA | Pass | State |
| 2025-10-15 | CORBIN, J. PAD 1 | KINGSLEY, Susquehanna, PA | Pass | State |
| 2025-10-15 | BENEDIKT, K. PAD 1 | MONTROSE, Susquehanna, PA | Pass | State |
| 2025-10-14 | WILLIAMS FIELD SVC CO LLC/WILCOX COMP STA | TUNKHANNOCK, Wyoming, PA | Pass | State |
| 2025-10-14 | NFG MIDSTREAM CLERMONT LLC/CLERMONT EAST COMP STA | WILCOX, McKean, PA | Pass | State |
| 2025-10-14 | EQM GATHERING OPCO LLC/MCINTOSH COMP STA | FINLEYVILLE, Washington, PA | Pass | State |
| 2025-10-14 | EQM GATHERING OPCO LLC/MCINTOSH COMP STA | FINLEYVILLE, Washington, PA | Pass | State |
| 2025-10-14 | WCAA UPSTREAM LLC/GRAHAM WELLPAD | DARRAGH, Westmoreland, PA | Pass | State |
| 2025-10-13 | WILLIAMS FIELD SVC CO LLC/JONES COMP STA | FRIENDSVILLE, Susquehanna, PA | Pass | State |
| 2025-10-13 | REGENCY MARCELLUS GAS GATHERING LLC/TAYLOR COMP STA | CANTON, Bradford, PA | Pass | State |
| 2025-10-13 | PINE RUN MIDSTREAM LLC/BICKER COMP STA | CABOT, Butler, PA | Pass | State |
| 2025-10-13 | PRECISION CAPITAL, LP PAD 1 | HOP BOTTOM, Susquehanna, PA | Pass | State |
| 2025-10-13 | TUCKER, H. PAD 1 | MONTROSE, Susquehanna, PA | Pass | State |
| 2025-10-09 | TEXAS EASTERN TRANS LP/TE DELMONT COMP STA | GREENSBURG, Westmoreland, PA | Pass | State |
| 2025-10-09 | MAINESBURG GS LP/MAINESBURG GATHERING STA | MANSFIELD, Tioga, PA | Pass | State |
| 2025-10-08 | MAINESBURG GS LP/WELLS COMP STA | COVINGTON, Tioga, PA | Pass | State |
| 2025-10-07 | MARKWEST LIBERTY MIDSTREAM RES/DOWN HOME COMPRESSOR STATION | ROBINSON TWP, Washington, PA | Pass | State |
| 2025-10-03 | ONEIDA VALLEY MIDSTRAM LLC/CONSTELLATION COMP STA | WEST SUNBURY, Butler, PA | Pass | State |
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Primary NAICS code as filed on the facility record; dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.