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 |
|---|---|---|---|---|
| 2025-10-03 | COTERRA ENERGY INC/HAYNES W PAD 1 | NEW MILFORD, Susquehanna, PA | Pass | State |
| 2025-10-02 | PA GEN ENERGY CO LLC/COP TRACT 293 COMP STA | WATERVILLE, Lycoming, PA | Pass | State |
| 2025-10-02 | AUSTIN, E. PAD 1 | HOP BOTTOM, Susquehanna, PA | Pass | State |
| 2025-10-01 | NFG MIDSTREAM COVINGTON LLC/NETTERMAN COMP STA | WELLSBORO, Tioga, PA | Pass | State |
| 2025-10-01 | EQM GATHERING OPCO LLC/SNAPPING TURTLE COMP STA | WIND RIDGE, Greene, PA | Pass | State |
| 2025-10-01 | CABOT OIL & GAS CORP/KROPA, T. PAD 1 | SPRINGVILLE, Susquehanna, PA | Pass | State |
| 2025-10-01 | COTERRA ENERGY INC/ADAMS J PAD 1 | KINGSLEY, Susquehanna, PA | Pass | State |
| 2025-09-30 | BKV OPR LLC/P & G WAREHOUSE PAD | MESHOPPEN, Wyoming, PA | Pass | State |
| 2025-09-30 | EQM GATHERING OPCO LLC/SNAPPING TURTLE COMP STA | WIND RIDGE, Greene, PA | Pass | State |
| 2025-09-30 | EXPAND OPERATING LLC/MARIS SUS PAD | MESHOPPEN, Susquehanna, PA | Pass | State |
| 2025-09-29 | NATL FUEL SUPPLY CORP/BUFFALO COMP STA | WASHINGTON, Washington, PA | Pass | State |
| 2025-09-26 | GREYLOCK MIDSTREAM LLC/CUMBERLAND HENDERSON COMP STA | CARMICHAELS, Greene, PA | Pass | State |
| 2025-09-25 | PA GEN ENERGY CO LLC/POTATO CREEK 2H COMP STA | SMETHPORT, McKean, PA | Pass | State |
| 2025-09-25 | EXPAND OPERATING LLC/HOOKER SUS PAD | MESHOPPEN, Susquehanna, PA | Pass | State |
| 2025-09-24 | EQM GATHERING OPCO LLC/BLUE MOON COMP STA | DAISYTOWN, Washington, PA | Pass | State |
| 2025-09-24 | HOUSENICK, J. PAD 1 | MONTROSE, Susquehanna, PA | Pass | State |
| 2025-09-24 | WARRINER, R. PAD 2 | MONTROSE, Susquehanna, PA | Pass | State |
| 2025-09-23 | MARKWEST LIBERTY MIDSTREAM & RESOURCES/GODWIN COMP STA | WASHINGTON, Washington, PA | Pass | State |
| 2025-09-23 | EXPAND OPERATING LLC/FERRARO WELL PAD | NEW ALBANY, Bradford, PA | Pass | State |
| 2025-09-23 | EXPAND OPERATING LLC/ RU-13 TONYA EAST PAD | NEW MILFORD, Susquehanna, PA | Pass | State |
| 2025-09-22 | EQM GATHERING OPCO LLC/BLUE MOON COMP STA | DAISYTOWN, Washington, PA | Pass | State |
| 2025-09-19 | DIVERSIFIED MIDSTREAM LLC/TIOGA COMP STA | WELLSBORO, Tioga, PA | Pass | State |
| 2025-09-18 | MARKWEST LIBERTY BLUESTONE LLC/BLUESTONE GAS PROC PLT | EVANS CITY, Butler, PA | Pass | State |
| 2025-09-17 | LAUREL MTN MIDSTREAM OPR LLC/SPRINGHILL COMP STA | LAKE LYNN, Fayette, PA | Pass | State |
| 2025-09-17 | MARKWEST LIBERTY BLUESTONE LLC/SARSEN GAS PROC PLT | EVANS CITY, Butler, PA | Pass | State |
| 2025-09-17 | REGENCY MARCELLUS GAS GATHERING LLC/ HIRKEY COMP STA | TUNKHANNOCK, Wyoming, PA | Pass | State |
| 2025-09-17 | REGENCY MARCELLUS GAS GATHERING LLC/QUAKER STATE RD COMP STA | MONTOURSVILLE, Lycoming, PA | Pass | State |
| 2025-09-16 | PEOPLES NATURAL GAS CO LLC/LIMESTONE COMP STA | SUMMERVILLE, Clarion, PA | Pass | State |
| 2025-09-16 | PA GEN ENERGY CO LLC/POTATO CREEK 1H COMP STA | CROSBY, McKean, PA | Pass | State |
| 2025-09-16 | ETC NORTHEAST PIPELINE/GALAXY COMP STA | PARKER, Butler, PA | Pass | State |
| 2025-09-11 | WILLIAMS FIELD SVC CO LLC/LATHROP COMP STA | SPRINGVILLE, Susquehanna, PA | Pass | State |
| 2025-09-11 | REGENCY MARCELLUS GAS GATHERING LLC/ AUBURN STA | MESHOPPEN, Susquehanna, PA | Pass | State |
| 2025-09-09 | WILLIAMS FIELD SVC CO LLC/SHASKAS COMP STA | MONTROSE, Susquehanna, PA | Pass | State |
| 2025-09-09 | NFG MIDSTREAM COVINGTON LLC/CLARK COMP STA | MAINESBURG, Tioga, PA | Pass | State |
| 2025-09-09 | EXPAND OPERATING LLC/NOWICKI PAD NR25 | SUSQUEHANNA, Susquehanna, PA | Pass | State |
| 2025-09-08 | HEP PENNSYLVANIA GATHERING LLC/WHITE CPF 1 COMP STA | STEVENSVILLE, Bradford, PA | Pass | State |
| 2025-09-05 | HEP PENNSYLVANIA GATHERING LLC/WHITE CPF 1 COMP STA | STEVENSVILLE, Bradford, PA | Pass | State |
| 2025-09-05 | REGENCY MARCELLUS GAS GATHERING LLC/TAYLOR COMP STA | CANTON, Bradford, PA | Pass | State |
| 2025-09-04 | EQT MIDSTREAM COMPANY LLC/DEEMSTON WICKS COMP STA | FREDERICKTOWN, Washington, PA | Pass | State |
| 2025-09-04 | EQM GATHERING OPCO LLC/CYGRYMUS COMP STA | NEW FREEPORT, Greene, PA | Pass | State |
| 2025-09-03 | NFG MIDSTREAM COVINGTON LLC/KRAUSE COMP STA | MAINESBURG, Tioga, PA | Pass | State |
| 2025-09-03 | MARKWEST LIBERTY BLUESTONE LLC/BLUESTONE GAS PROC PLT | EVANS CITY, Butler, PA | Pass | State |
| 2025-09-03 | HEP PENNSYLVANIA GATHERING LLC/CLARK CPF 1 COMP STA | WYSOX, Bradford, PA | Pass | State |
| 2025-09-03 | PAYNE, D. PAD 1 | NEW MILFORD, Susquehanna, PA | Pass | State |
| 2025-09-02 | WRIGHT, W. PAD 1 | MONTROSE, Susquehanna, PA | Pass | State |
| 2025-09-02 | VANDERMARK, R. PAD 1 | MONTROSE, Susquehanna, PA | Pass | State |
| 2025-08-29 | EXPAND OPERATING LLC/KAUFMANN WELL PAD | NEW ALBANY, Bradford, PA | Pass | State |
| 2025-08-28 | REGENCY MARCELLUS GAS GATHERING LLC/BOBST MOUNTAIN COMP STA | COGAN STA, Lycoming, PA | Pass | State |
| 2025-08-28 | ETC NORTHEAST FLD SVC LLC/PIKE COMP STA | ROCHESTER, Beaver, PA | Pass | State |
| 2025-08-26 | NFG MIDSTREAM COVINGTON LLC/DCNR TRACT 595 | ARNOT, Tioga, PA | Pass | State |
| 2025-08-25 | LAUREL HILL PAD A 12635 | LIBERTY, Lycoming, PA | Pass | State |
| 2025-08-22 | EXPAND OPERATING LLC/MARCUCCI JONES PAD | STEVENSVILLE, Bradford, PA | Pass | State |
| 2025-08-21 | BLACKHILL ENERGY LLC/BRADFORD CNTY COMP STA | COLUMBIA CROSS ROADS, Bradford, PA | Pass | State |
| 2025-08-21 | BLACKHILL ENERGY LLC/BEARDSLEE COMP STA | TROY, Bradford, PA | Pass | State |
| 2025-08-21 | EXPAND OPERATING LLC/RU-75 SGL-A WELLPAD | NEW MILFORD, Susquehanna, PA | Pass | State |
| 2025-08-21 | EXPAND OPERATING LLC/RU-75 SGL-A WELLPAD | NEW MILFORD, Susquehanna, PA | Pass | State |
| 2025-08-20 | APPALACHIA MIDSTREAM SVC LLC/GRANVILLE STA 2 | GRANVILLE SUMMIT, Bradford, PA | Pass | State |
| 2025-08-20 | BLACKHILL ENERGY LLC/YOUNG COMP STA — high-priority violation on file | COLUMBIA CROSS ROADS, Bradford, PA | Pass | State |
| 2025-08-19 | EXPAND OPERATING LLC/RU-47 KARMAZIN PAD | SUSQUEHANNA, Susquehanna, PA | Pass | State |
| 2025-08-15 | SENECA RESOURCES CORP/PHC COMP STA | CLEARFIELD, Clearfield, PA | Pass | State |
| 2025-08-14 | MARKWEST LIBERTY MIDSTREAM & RESOURCES/LOWRY COMP STA | AVELLA, Washington, PA | Pass | State |
| 2025-08-14 | XTO ENERGY HOMER CITY PP COMP STA/INDIANA — high-priority violation on file | HOMER CITY, Indiana, PA | Fail | State |
| 2025-08-13 | REGENCY MARCELLUS GAS GATHERING LLC/ AUBURN STA | MESHOPPEN, Susquehanna, PA | Pass | State |
| 2025-08-13 | PAYNE, D. PAD 1 | NEW MILFORD, Susquehanna, PA | Pending | State |
| 2025-08-12 | EXPAND OPERATING LLC/GU-VW MCMAHON WELL PAD | STEVENSVILLE, Bradford, PA | Pass | State |
| 2025-08-11 | CNX MIDSTREAM OPR CO LLC/NV-57 COMP STA | PROSPERITY, Washington, PA | Pass | State |
| 2025-08-11 | BKV OPR LLC/MIRABELLI PAD | TUNKHANNOCK, Wyoming, PA | Pass | State |
| 2025-08-08 | CABOT OIL & GAS CORP/MAKOSKY T PAD 1 | KINGSLEY, Susquehanna, PA | Pass | State |
| 2025-08-08 | GREENWOOD, R. PAD 2 | MONTROSE, Susquehanna, PA | Pass | State |
| 2025-08-07 | MTN GATHERING LLC/JEFFERSON COMP STA | BUTLER, Butler, PA | Fail | State |
| 2025-08-07 | MTN GATHERING LLC/JEFFERSON COMP STA | BUTLER, Butler, PA | Pass | State |
| 2025-08-07 | SUSQUEHANNA GATHERING/NORTH RANGE CPF 1 COMP STA | SUSQUEHANNA, Susquehanna, PA | Pass | State |
| 2025-08-07 | EXPAND OPER LLC/GU-N HEBDA VANDEMARK PAD | LACEYVILLE, Bradford, PA | Pass | State |
| 2025-08-05 | SNYDER BROS INC/HOGBACK COMP STA | NEW BETHLEHEM, Armstrong, PA | Pass | State |
| 2025-08-05 | APPALACHIA MIDSTREAM SVC LLC/CHERRY COMP STA | DUSHORE, Sullivan, PA | Pass | State |
| 2025-08-05 | WARRINER, S PAD 1 — high-priority violation on file | MONTROSE, Susquehanna, PA | Pass | State |
| 2025-08-05 | MOGRIDGE, C. PAD 1 — high-priority violation on file | SPRINGVILLE, Susquehanna, PA | Pass | State |
| 2025-08-04 | CAREY, R. PAD 1 | KINGSLEY, Susquehanna, PA | Pass | State |
| 2025-08-04 | TSOUROUS, A. PAD 1 | MONTROSE, Susquehanna, PA | Pass | State |
| 2025-08-01 | MTN GATHERING LLC/DRY RUN COMP STA | CHAPMAN, Clinton, PA | Pass | State |
| 2025-07-30 | SWN PROD CO LLC/DEPUE COMP STA | MONTROSE, Susquehanna, PA | Pass | State |
| 2025-07-30 | EXPAND OPERATING LLC/NICKOLYN WELL PAD | AUBURN, Susquehanna, PA | Pass | State |
| 2025-07-29 | RAG APPLE LLC PAD 1 — high-priority violation on file | MONTROSE, Susquehanna, PA | Pass | State |
| 2025-07-29 | RUSSO, B. PAD 1 — high-priority violation on file | SPRINGVILLE, Susquehanna, PA | Pass | State |
| 2025-07-28 | WCAA MIDSTREAM LLC/WEITZ SOUTH 20 COMP STA | ADAMSBURG, Westmoreland, PA | Pass | State |
| 2025-07-28 | JHHC PAD 1 — high-priority violation on file | MONTROSE, Susquehanna, PA | Pass | State |
| 2025-07-28 | PENNAY, G PAD 1 | KINGSLEY, Susquehanna, PA | Pass | State |
| 2025-07-24 | LAUREL MTN MIDSTREAM OPR LLC/HERMINIE COMP STA | WEST NEWTON, Westmoreland, PA | Pass | State |
| 2025-07-24 | APPALACHIA MIDSTREAM SVC LLC/AUBURN COMP STA | MESHOPPEN, Susquehanna, PA | Pass | State |
| 2025-07-24 | MARKWEST LIBERTY BLUESTONE LLC/ROYAL OAK COMP STA | EVANS CITY, Butler, PA | Pass | State |
| 2025-07-23 | WILLIAMS FIELD SVC CO LLC/KANE ROAD COMP STA | MONTROSE, Susquehanna, PA | Pass | State |
| 2025-07-23 | HEP PENNSYLVANIA GATHERING LLC/LAUREL HILL COMP STA | TROUT RUN, Lycoming, PA | Pass | State |
| 2025-07-23 | UGI MORAINE EAST GATHERING LLC/RENICK COMP STA | WEST SUNBURY, Butler, PA | Pass | State |
| 2025-07-22 | UGI MORAINE EAST GATHERING LLC/RENICK COMP STA | WEST SUNBURY, Butler, PA | Pass | State |
| 2025-07-22 | NFG MIDSTREAM TROUT RUN LLC/TROUT RUN MTN COMP STA | TROUT RUN, Lycoming, PA | Pass | State |
| 2025-07-21 | WILLIAMS FIELD SVC CO LLC/SNAKE CREEK COMP STA | CLARKS SUMMIT, Susquehanna, PA | Pass | State |
| 2025-07-21 | NFG MIDSTREAM COVINGTON LLC/LAWTON COMP STA | WELLSBORO, Tioga, PA | Pass | State |
| 2025-07-21 | CABOT OIL & GAS CORP/BISHOP, B PAD 1 | SPRINGVILLE, Susquehanna, PA | Pass | State |
| 2025-07-17 | HEP PENNSYLVANIA GATHERING LLC/WHITE CPF 1 COMP STA | STEVENSVILLE, Bradford, PA | Pass | State |
| 2025-07-16 | ROVER PIPELINE LLC/BULGER COMP STA | BULGER, Washington, 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.