EPA Air · stack tests by state, industry and year
Oil and gas extraction (NAICS 2111): stack tests in Pennsylvania, 2026
- 291Stack 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 2026 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, 2026
- Mining support (NAICS 2131) 35
- Pipeline transportation (NAICS 4862) 31
- Utilities (NAICS 2211) 23
- Educational services (NAICS 6113) 9
- Chemical manufacturing (NAICS 3251) 8
- Waste management and remediation (NAICS 5622) 7
- Primary metal manufacturing (NAICS 3311) 7
- Merchant wholesalers, nondurable goods (NAICS 4247) 5
- National security and international affairs (NAICS 9281) 5
- Utilities (NAICS 2213) 5
- Chemical manufacturing (NAICS 3254) 5
- Petroleum and coal products manufacturing (NAICS 3241) 5
- Nonmetallic mineral product manufacturing (NAICS 3274) 4
- Nonmetallic mineral product manufacturing (NAICS 3273) 4
- Paper manufacturing (NAICS 3221) 4
- Primary metal manufacturing (NAICS 3315) 4
- Administration of environmental programs (NAICS 9241) 4
- Plastics and rubber products manufacturing (NAICS 3261) 3
- Mining and quarrying (NAICS 2121) 3
- Hospitals (NAICS 6221) 3
Air-emissions stack tests recorded in Pennsylvania, 2026
| Date | Facility | Where | Kind | Agency |
|---|---|---|---|---|
| 2026-04-30 | EASTERN GAS TRANS & STORAGE/RURAL VLY COMP STA | KITTANNING, Armstrong, PA | Pass | State |
| 2026-04-30 | DIVERSIFIED PROD MARCHAND COMP STA | INDIANA, Indiana, PA | Pass | State |
| 2026-04-30 | CAREY, R. PAD 1 | KINGSLEY, Susquehanna, PA | Pass | State |
| 2026-04-28 | REGENCY MARCELLUS GAS GATHERING LLC/ROUPP COMP STA | MIFFLIN, Lycoming, PA | Pass | State |
| 2026-04-28 | MARKWEST LIBERTY MIDSTREAM/ CARPENTER COMP STA | WEST ALEXANDRIA, Washington, PA | Pass | State |
| 2026-04-28 | EXPAND OPER LLC/GU-K CAMPBELL ERCOLE WELL PAD | STEVENSVILLE, Bradford, PA | Pass | State |
| 2026-04-27 | BKV OPERATING LLC/BAKER WEST COMPRESSOR STATION | FORREST LAKE TWP, Susquehanna, PA | Pass | State |
| 2026-04-27 | EXPAND OPERATING LLC/WOOSMAN PAD | NEW MILFORD, Susquehanna, PA | Pass | State |
| 2026-04-23 | NFG MIDSTREAM COVINGTON LLC/SHAW COMP STA | MAINESBURG, Tioga, PA | Pending | State |
| 2026-04-23 | HILCORP ENERGY CO/PULASKI WHITING CTL FAC — high-priority violation on file | EDINBURG, Lawrence, PA | Pass | State |
| 2026-04-23 | RUSSO, B. PAD 1 — high-priority violation on file | SPRINGVILLE, Susquehanna, PA | Pass | State |
| 2026-04-22 | EQM GATHERING OPCO LLC/TWILIGHT COMP STA | DAISYTOWN, Washington, PA | Pass | State |
| 2026-04-22 | HILCORP ENERGY CO/NCD CENTRAL FAC | NEW CASTLE, Lawrence, PA | Pass | State |
| 2026-04-22 | HILCORP ENERGY CO/MAHONING BUCKER PROD FAC — high-priority violation on file | EDINBURG, Lawrence, PA | Pass | State |
| 2026-04-22 | P&G 2 WELL SITE | TUNKHANNOCK, Wyoming, PA | Pass | State |
| 2026-04-22 | WARRINER, S PAD 1 — high-priority violation on file | MONTROSE, Susquehanna, PA | Pass | State |
| 2026-04-22 | GREENWOOD, R. PAD 2 | MONTROSE, Susquehanna, PA | Pass | State |
| 2026-04-21 | WILLIAMS FIELD SVC CO LLC/SNAKE CREEK COMP STA | CLARKS SUMMIT, Susquehanna, PA | Pass | State |
| 2026-04-21 | HILCORP ENERGY CO/JEFFERSON MONTGOMERY STA | JEFFERSON TOWNSHIP, Mercer, PA | Pass | State |
| 2026-04-21 | MOGRIDGE, C. PAD 1 — high-priority violation on file | SPRINGVILLE, Susquehanna, PA | Pending | State |
| 2026-04-20 | LAUREL MTN MIDSTREAM OPR LLC/BROWN COMP STA | GREENSBORO, Greene, PA | Pass | State |
| 2026-04-20 | HILCORP ENERGY CO/NORTH BEAVER KEPHART PROD FAC | ENON VALLEY, Lawrence, PA | Pass | State |
| 2026-04-20 | PENNAY, G PAD 1 | KINGSLEY, Susquehanna, PA | Pass | State |
| 2026-04-20 | TSOUROUS, A. PAD 1 | MONTROSE, Susquehanna, PA | Pass | State |
| 2026-04-17 | NFG MIDSTREAM COVINGTON LLC/KRAUSE COMP STA | MAINESBURG, Tioga, PA | Pass | State |
| 2026-04-16 | REGENCY MARCELLUS GATHERING LLC/BRADFORD WEST COMP STA | GRANVILLE SUMMIT, Bradford, PA | Pass | State |
| 2026-04-16 | NFG MIDSTREAM COVINGTON LLC/DCNR TRACT 595 | ARNOT, Tioga, PA | Pass | State |
| 2026-04-16 | EQM GATHERING OPCO LLC/TERRA COMP STA | PLUM CREEK, Armstrong, PA | Pass | State |
| 2026-04-16 | MARKWEST LIBERTY MIDST & RES/IMPERIAL CIBUS RANCH COMP STA | ROBINSON, Washington, PA | Pass | State |
| 2026-04-16 | RAG APPLE LLC PAD 1 — high-priority violation on file | MONTROSE, Susquehanna, PA | Pass | State |
| 2026-04-16 | JHHC PAD 1 — high-priority violation on file | MONTROSE, Susquehanna, PA | Pass | State |
| 2026-04-15 | REGENCY MARCELLUS GAS GATHERING LLC/LONE WALNUT COMP STA | JERSEY SHORE, Lycoming, PA | Pass | State |
| 2026-04-15 | ETC NORTHEAST PIPELINE LLC/RED BEND COMP STA | TROUT RUN, Lycoming, PA | Pass | State |
| 2026-04-15 | WILLIAMS FIELD SVC CO LLC/FRASER COMP STA | MONTROSE, Susquehanna, PA | Pass | State |
| 2026-04-15 | WILLIAMS FIELD SVC CO LLC/MILLER COMP STA | NEW MILFORD, Susquehanna, PA | Pass | State |
| 2026-04-15 | MARKWEST LIBERTY MIDST & RES/IMPERIAL CIBUS RANCH COMP STA | ROBINSON, Washington, PA | Pass | State |
| 2026-04-15 | EXPAND OPERATING LLC/CURTIN WYO PAD | LACEYVILLE, Wyoming, PA | Pass | State |
| 2026-04-15 | EXPAND OPERATING LLC/TIFFANY WYO PAD | LACEYVILLE, Wyoming, PA | Pending | State |
| 2026-04-15 | RUSSO, B. PAD 1 — high-priority violation on file | SPRINGVILLE, Susquehanna, PA | Pending | State |
| 2026-04-14 | NFG MIDSTREAM COVINGTON LLC/STOCK 144 COMP STA | WELLSBORO, Tioga, PA | Pending | State |
| 2026-04-14 | WILLIAMS FIELD SVC CO LLC/NORTHEAST COMP STA | HALLSTEAD, Susquehanna, PA | Pass | State |
| 2026-04-14 | STARZEC, E. PAD 1 | MONTROSE, Susquehanna, PA | Pass | State |
| 2026-04-14 | GEIGER, K. PAD 1 | MONTROSE, Susquehanna, PA | Pass | State |
| 2026-04-13 | CABOT OIL & GAS CORP/BISHOP, B PAD 1 | SPRINGVILLE, Susquehanna, PA | Pass | State |
| 2026-04-13 | LAUFFER, J. PAD 1 — high-priority violation on file | SPRINGVILLE, Susquehanna, PA | Pass | State |
| 2026-04-10 | CNX MIDSTREAM OPR CO LLC/BUCKLAND COMP STA | WIND RIDGE, Greene, PA | Pass | State |
| 2026-04-09 | MARKWEST LIBERTY MIDSTREAM & RESOURCES/SHAW COMP STA | WASHINGTON, Washington, PA | Pass | State |
| 2026-04-09 | SQUIER, R. PAD 1 — high-priority violation on file | KINGSLEY, Susquehanna, PA | Pass | State |
| 2026-04-08 | WARREN EP INC/REIMILLER PAD | MESHOPPEN, Wyoming, PA | Pass | State |
| 2026-04-07 | NFG MIDSTREAM COVINGTON LLC/CLARK COMP STA | MAINESBURG, Tioga, PA | Pass | State |
| 2026-04-06 | SQUIER, R. PAD 1 — high-priority violation on file | KINGSLEY, Susquehanna, PA | Pending | State |
| 2026-04-06 | HUSTON, J. PAD 1 | KINGSLEY, Susquehanna, PA | Pass | State |
| 2026-04-02 | REGENCY MARCELLUS GAS GATHERING/CANOE RUN COMP STA | SALLADASBURG, Lycoming, PA | Pass | State |
| 2026-04-02 | NFG MIDSTREAM COVINGTON LLC/NETTERMAN COMP STA | WELLSBORO, Tioga, PA | Pass | State |
| 2026-04-02 | WILLIAMS FIELD SVC CO LLC/CENTRAL COMP STA | MONTROSE, Susquehanna, PA | Pass | State |
| 2026-04-02 | LARUE, C PAD 2 — high-priority violation on file | MONTROSE, Susquehanna, PA | Pass | State |
| 2026-04-01 | CNX MIDSTREAM OPR CO LLC/MAMONT COMP STA | APOLLO, Westmoreland, PA | Pass | State |
| 2026-04-01 | REGENCY MARCELLUS GAS GATHERING LLC/OGONTZ WEST COMP STA | CUMMINS TWP, Lycoming, PA | Pass | State |
| 2026-04-01 | REGENCY MARCELLUS GAS GATHERING LLC/OGONTZ WEST COMP STA | CUMMINS TWP, Lycoming, PA | Pass | State |
| 2026-04-01 | WILLIAMS FIELD SVC CO LLC/SHIELDS COMP STA | SPRINGVILLE, Susquehanna, PA | Pass | State |
| 2026-04-01 | NFG MIDSTREAM CLERMONT LLC/CLERMONT WEST COMP STA | EMPORIUM, Elk, PA | Pass | State |
| 2026-04-01 | POWERS, M. PAD 1 | MESHOPPEN, Susquehanna, PA | Pass | State |
| 2026-04-01 | HAWK, J. PAD 1 | MESHOPPEN, Susquehanna, PA | Pass | State |
| 2026-03-31 | WILLIAMS FIELD SVC CO LLC/TEEL COMP STA | SPRINGVILLE, Susquehanna, PA | Pass | State |
| 2026-03-31 | MARKWEST LIBERTY MIDSTREAM/BRIGICH COMP STA | CANONSBURG, Washington, PA | Pass | State |
| 2026-03-30 | LAUREL MTN MIDSTREAM OPR LLC/DUNBAR COMP STA | DUNBAR, Fayette, PA | Pass | State |
| 2026-03-27 | PIN OAK MIDSTREAM LLC/HURTT COMP STA | NEW WILMINGTON, Mercer, PA | Pass | State |
| 2026-03-27 | MARKWEST LIBERTY MIDSTREAM/SMITH COMP STA | BURGETTSTOWN, Washington, PA | Pass | State |
| 2026-03-27 | NFG MIDSTREAM CLERMONT LLC/RICH VALLEY COMP STA | EMPORIUM, Cameron, PA | Pass | State |
| 2026-03-26 | WILLIAMS FIELD SVC CO LLC/TEEL COMP STA | SPRINGVILLE, Susquehanna, PA | Pass | State |
| 2026-03-26 | EQM GATHERING OPCO LLC/COLE FARM COMPRESSOR STATION | HOLBROOK, Greene, PA | Pass | State |
| 2026-03-25 | POWERS, N. PAD 1 | MONTROSE, Susquehanna, PA | Pass | State |
| 2026-03-25 | WALDENBERGER, P. PAD 1 | SPRINGVILLE, Susquehanna, PA | Pass | State |
| 2026-03-24 | MARKWEST LIBERTY MIDSTREAM/BAKER COMP STA | WASHINGTON, Washington, PA | Pass | State |
| 2026-03-23 | PINE RUN MIDSTREAM LLC/TROUT COMP STA | WORTHINGTON, Armstrong, PA | Pass | State |
| 2026-03-20 | HILCORP ENERGY CO/PULASKI WHITING CTL FAC — high-priority violation on file | EDINBURG, Lawrence, PA | Pass | State |
| 2026-03-20 | MARKWEST LIBERTY MIDSTREAM & RESOURCES/HARMON CREEK GAS PLT — high-priority violation on file | BULGER, Washington, PA | Pass | State |
| 2026-03-18 | LAUREL MTN MIDSTREAM OPR LLC/CANTARAL COMP STA | WAYNESBURG, Greene, PA | Pass | State |
| 2026-03-18 | NFG MIDSTREAM TROUT RUN LLC/BODINE COMP STA | TROUT RUN, Lycoming, PA | Pass | State |
| 2026-03-17 | MARKWEST LIBERTY MIDST & RESOURCES/THREE BROTHERS COMP STA | BURGETTSTOWN, Washington, PA | Pass | State |
| 2026-03-16 | NFG MIDSTREAM COVINGTON LLC/DCNR TRACT 595 | ARNOT, Tioga, PA | Pass | State |
| 2026-03-13 | WILLIAMS FIELD SVC CO LLC/CHURCH COMP STA | SPRINGVILLE, Susquehanna, PA | Pass | State |
| 2026-03-13 | SNYDER BROS INC/WHITE COMP STA | KITTANNING, Armstrong, PA | Pass | State |
| 2026-03-12 | MARKWEST LIBERTY BLUESTONE LLC/BLUESTONE GAS PROC PLT | EVANS CITY, Butler, PA | Pass | State |
| 2026-03-12 | WILLIAMS FIELD SVC CO LLC/SHIELDS COMP STA | SPRINGVILLE, Susquehanna, PA | Pass | State |
| 2026-03-11 | WILLIAMS FIELD SVC CO LLC/WILCOX COMP STA | TUNKHANNOCK, Wyoming, PA | Pass | State |
| 2026-03-11 | EXPAND OPERATING LLC/BLYE WELL PAD | MONTROSE, Susquehanna, PA | Pass | State |
| 2026-03-11 | CLEAN ENERGY EXPL & PROD LLC/WHISPERING PINES WELL PAD | WELLSBORO, Tioga, PA | Pass | State |
| 2026-03-10 | EQT ARO LLC/COP TRACT 685 COMP STA — high-priority violation on file | JERSEY SHORE, Lycoming, PA | Pass | State |
| 2026-03-10 | EQM GATHERING OPCO LLC/HALO COMP STA | SYCAMORE, Greene, PA | Pass | State |
| 2026-03-10 | EXPAND OPER LLC/TI-46-BLISS WELL PAD | LIBERTY, Tioga, PA | Pass | State |
| 2026-03-09 | DIVERSIFIED PROD LLC/BELL POINT COMP STA | APOLLO, Westmoreland, PA | Pass | State |
| 2026-03-09 | EQT ARO LLC/TRACT 285 COMP STA | NORTH BEND, Clinton, PA | Pass | State |
| 2026-03-05 | EQT ARO LLC/TRACT 289 COMP STA — high-priority violation on file | JERSEY SHORE, Lycoming, PA | Pass | State |
| 2026-03-05 | SNYDER BROS INC/AMBROSE COMP STA | ADRIAN, Armstrong, PA | Pass | State |
| 2026-03-04 | MARKWEST LIBERTY BLUESTONE LLC/VOLL COMP STA | EVANS CITY, Butler, PA | Pass | State |
| 2026-03-04 | EQT ARO LLC/VARGO COMP STA — high-priority violation on file | TROUT RUN, Lycoming, PA | Pass | State |
| 2026-03-04 | REGENCY MARCELLUS GAS GATHERING LLC/TAYLOR COMP STA | CANTON, Bradford, PA | Pass | State |
| 2026-03-03 | EQT ARO LLC/LARRYS CREEK COMP STA | JERSEY SHORE, Lycoming, PA | Pass | State |
| 2026-03-02 | LAUREL MTN MIDSTREAM OPR LLC/PRAH COMP STA | MCCLELLANDTOWN, Fayette, PA | Pass | State |
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.