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 |
|---|---|---|---|---|
| 2025-07-16 | CNX MIDSTREAM OPR CO LLC/NV-57 COMP STA | PROSPERITY, Washington, PA | Pass | State |
| 2025-07-16 | STARZEC, E. PAD 1 | MONTROSE, Susquehanna, PA | Pass | State |
| 2025-07-16 | GEIGER, K. PAD 1 | MONTROSE, Susquehanna, PA | Pass | State |
| 2025-07-15 | MARKWEST LIBERTY MIDSTREAM & RESOURCES/JOHNSTON COMP STA | CANONSBURG, Washington, PA | Pass | State |
| 2025-07-15 | CNX MIDSTREAM OPR CO LLC/MCQUAY COMP STA | CENTER TOWNSHIP, Greene, PA | Pass | State |
| 2025-07-10 | EQM GATHERING OPCO LLC/COLE FARM COMPRESSOR STATION | HOLBROOK, Greene, PA | Pass | State |
| 2025-07-09 | COLUMBIA GAS TRANS CORP/CGT DELMONT COMP STA | DELMONT, Westmoreland, PA | Pass | State |
| 2025-07-09 | HEP PA GATHERING LLC/GREENZWEIG COMP STA | WYALUSING, Bradford, PA | Pass | State |
| 2025-07-09 | WILLIAMS FIELD SVC CO LLC/CENTRAL COMP STA | MONTROSE, Susquehanna, PA | Pass | State |
| 2025-07-09 | EQM GATHERING OPCO LLC/BLUE MOON COMP STA | DAISYTOWN, Washington, PA | Pass | State |
| 2025-07-08 | HEP PENNSYLVANIA GATHERING LLC/CLARK CPF 1 COMP STA | WYSOX, Bradford, PA | Pass | State |
| 2025-07-08 | PINE RUN MIDSTREAM LLC/BASS COMP STA | SAXONBURG, Butler, PA | Pass | State |
| 2025-07-08 | EQM GATHERING OPCO LLC/BLUE MOON COMP STA | DAISYTOWN, Washington, PA | Pass | State |
| 2025-07-07 | WILLIAMS FIELD SVC CO LLC/FRASER COMP STA | MONTROSE, Susquehanna, PA | Pass | State |
| 2025-07-07 | LONGHORN PAD C/ELK | WEEDVILLE, Elk, PA | Pass | State |
| 2025-07-03 | COLUMBIA GAS TRANS LLC/IOWA COMP STA | BROOKVILLE, Jefferson, PA | Pass | State |
| 2025-07-02 | COLUMBIA GAS TRANS CORP/DONEGAL COMP STA | WEST ALEXANDER, Washington, PA | Pass | State |
| 2025-07-02 | APPALACHIA MIDSTREAM SVC LLC/GRANVILLE STA 2 | GRANVILLE SUMMIT, Bradford, PA | Pass | State |
| 2025-07-01 | MTN GATHERING/ADAMS COMP STA | VANDERBILT, Fayette, PA | Pass | State |
| 2025-07-01 | APPALACHIA MIDSTREAM SVC LLC/RATTLESNAKE HILL COMP STA | AUBURN TOWNSHIP, Susquehanna, PA | Pass | State |
| 2025-07-01 | EQT ARO LLC/LYCOMING H&FC COMP STA — high-priority violation on file | TROUT RUN, Lycoming, PA | Pass | State |
| 2025-06-30 | APPALACHIA MIDSTREAM SVC LLC/AUBURN COMP STA | MESHOPPEN, Susquehanna, PA | Pass | State |
| 2025-06-26 | EQUITRANS LP/TRUITTSBURG STA | FAIRMOUNT CITY, Clarion, PA | Pass | State |
| 2025-06-26 | UGI AUBURN GATHERING LLC/ MANNING COMPRESSOR LNG STA | MESHOPPEN, Wyoming, PA | Pass | State |
| 2025-06-26 | HUSTON, J. PAD 1 | KINGSLEY, Susquehanna, PA | Pass | State |
| 2025-06-26 | HAWK, J. PAD 1 | MESHOPPEN, Susquehanna, PA | Pass | State |
| 2025-06-25 | EQM GATHERING OPCO LLC/EUROPA COMP STA | CENTER, Greene, PA | Pass | State |
| 2025-06-25 | UGI AUBURN GATHERING LLC/ANDERSON COMP STA | NEW RINGGOLD, Susquehanna, PA | Pass | State |
| 2025-06-25 | EXPAND OPERATING LLC/SIVERS BRA PAD | LACEYVILLE, Bradford, PA | Pass | State |
| 2025-06-25 | LARUE, C PAD 2 — high-priority violation on file | MONTROSE, Susquehanna, PA | Pass | State |
| 2025-06-25 | COP TRACT 596 PAD A | ROARING BRANCH, Tioga, PA | Pass | State |
| 2025-06-25 | POWERS, M. PAD 1 | MESHOPPEN, Susquehanna, PA | Pass | State |
| 2025-06-24 | UGI AUBURN GATHERING LLC/AUBURN COMP STA | AUBURN, Susquehanna, PA | Pass | State |
| 2025-06-24 | WILLIAMS FIELD SVC CO LLC/NORTHEAST COMP STA | HALLSTEAD, Susquehanna, PA | Pass | State |
| 2025-06-24 | GREYLOCK PROD LLC/ANSONVILLE COMP STA | NEW MILLPORT, Clearfield, PA | Pass | State |
| 2025-06-24 | EXPAND OPERATING LLC/ADAMS WYO PAD | LACEYVILLE, Wyoming, PA | Pass | State |
| 2025-06-24 | SQUIER, R. PAD 1 — high-priority violation on file | KINGSLEY, Susquehanna, PA | Pass | State |
| 2025-06-24 | LAUFFER, J. PAD 1 — high-priority violation on file | SPRINGVILLE, Susquehanna, PA | Pass | State |
| 2025-06-23 | JKLM ENERGY LLC/HEADWATERS 145 WELL PAD | ULYSSES, Potter, PA | Pass | State |
| 2025-06-19 | REGENCY MARCELLUS GAS GATHERING LLC/ROUPP COMP STA | MIFFLIN, Lycoming, PA | Pass | State |
| 2025-06-18 | EQUITRANS LP/JEFFERSON COMP STA | LIPPINCOTT, Greene, PA | Pass | State |
| 2025-06-18 | EXPAND OPERATING LLC/N-24 BUCKHORN WELL PAD | MONTROSE, Susquehanna, PA | Pass | State |
| 2025-06-17 | EQM GATHERING OPCO LLC/EUROPA COMP STA | CENTER, Greene, PA | Pass | State |
| 2025-06-16 | EXPAND OPERATING LLC/RU-06 FLOHS PAD | NEW MILFORD, Susquehanna, PA | Pass | State |
| 2025-06-12 | UGI TEXAS CREEK LLC/THOMAS 808 FAC | ELK TOWNSHIP, Tioga, PA | Pass | State |
| 2025-06-12 | UGI TEXAS CREEK LLC/PIERSON 810 COMP STA | GAINES, Tioga, PA | Pass | State |
| 2025-06-12 | REGENCY MARCELLUS GAS GATHERING LLC/QUAKER STATE RD COMP STA | MONTOURSVILLE, Lycoming, PA | Pass | State |
| 2025-06-11 | PEOPLES NATURAL GAS CO LLC/BELKNAP COMP STA | DAYTON, Armstrong, PA | Pass | State |
| 2025-06-11 | UGI TEXAS CREEK LLC/CLEGG COMP STA | TROUT RUN, Lycoming, PA | Pass | State |
| 2025-06-11 | UGI TEXAS CREEK LLC/JACKSON COMP STA | ROARING BRANCH, Tioga, PA | Pass | State |
| 2025-06-11 | NFG MIDSTREAM TROUT RUN LLC/TROUT RUN MTN COMP STA | TROUT RUN, Lycoming, PA | Pass | State |
| 2025-06-10 | NFG MIDSTREAM COVINGTON LLC/SHAW COMP STA | MAINESBURG, Tioga, PA | Pending | State |
| 2025-06-10 | EQM GATHERING OPCO LLC/CALLISTO COMP STA | SYCAMORE, Greene, PA | Pass | State |
| 2025-06-10 | EQM GATHERING OPCO LLC/CALLISTO COMP STA | SYCAMORE, Greene, PA | Pass | State |
| 2025-06-05 | UGI TEXAS CREEK LLC/LOVELL COMP STA | ROARING BRANCH, Tioga, PA | Pass | State |
| 2025-06-05 | BLUESTONE PIPELINE/CDP#1-A | NEW MILFORD, Susquehanna, PA | Pass | State |
| 2025-06-04 | UGI TEXAS CREEK LLC/LOVELL COMP STA | ROARING BRANCH, Tioga, PA | Pass | State |
| 2025-06-04 | EXPAND OPERATING LLC/NR02 ENDLESS MOUNTAIN WELLPAD | MONTROSE, Susquehanna, PA | Pass | State |
| 2025-06-03 | UGI TEXAS CREEK LLC/YAGGIE COMP STA | ROARING BRANCH, Tioga, PA | Pass | State |
| 2025-06-03 | EQM GATHERING OPCO LLC/PISCES COMP STA | CLAYSVILLE, Washington, PA | Pass | State |
| 2025-06-02 | REGENCY MARCELLUS GAS GATHERING LLC/LONE WALNUT COMP STA | JERSEY SHORE, Lycoming, PA | Pass | State |
| 2025-06-02 | UGI TEXAS CREEK LLC/TRIMBLE COMP STA | ROARING BRANCH, Tioga, PA | Pass | State |
| 2025-06-02 | UGI TEXAS CREEK LLC/CASTLE COMP STA | CANTON, Bradford, PA | Pass | State |
| 2025-05-30 | MTN GATHERING LLC/FORWARD COMP STA | RENFREW, Butler, PA | Pass | State |
| 2025-05-29 | GREYLOCK MIDSTREAM LLC/VERES COMP STA | WAYNESBURG, Greene, PA | Pass | State |
| 2025-05-28 | EQT ARTEMIS MIDSTREAM LLC/ROGERS COMP STA — high-priority violation on file | NEW KENSINGTON, Westmoreland, PA | Pass | State |
| 2025-05-27 | MARKWEST LIBERTY BLUESTONE LLC/SARSEN GAS PROC PLT | EVANS CITY, Butler, PA | Pass | State |
| 2025-05-22 | SNYDER BROS INC/WHITE COMP STA | KITTANNING, Armstrong, PA | Pass | State |
| 2025-05-22 | EXPAND OPER LLC/GU-K CAMPBELL ERCOLE WELL PAD | STEVENSVILLE, Bradford, PA | Pass | State |
| 2025-05-21 | RW GATHERING LLC/SALEM COMP STA | DERRY, Westmoreland, PA | Pass | State |
| 2025-05-21 | APPALACHIA MIDSTREAM SVC LLC/WILMOT COMP STA | WYALUSING, Bradford, PA | Pass | State |
| 2025-05-21 | REGENCY MARCELLUS GAS GATHERING LLC/SEVERCOOL STA | FORKSTON, Wyoming, PA | Pass | State |
| 2025-05-21 | EXPAND OPERATING LLC/VALENTINE CPF 1 | CLIFFORD, Susquehanna, PA | Pass | State |
| 2025-05-21 | EXPAND OPERATING LLC/VALENTINE CPF 1 | CLIFFORD, Susquehanna, PA | Pass | State |
| 2025-05-21 | SNYDER BROS INC/AMBROSE COMP STA | ADRIAN, Armstrong, PA | Pass | State |
| 2025-05-20 | RW GATHERING LLC/ECKER BERGMAN RD COMP STA | DERRY TWP, Westmoreland, PA | Pass | State |
| 2025-05-20 | MARKWEST LIBERTY BLUESTONE LLC/BLUESTONE GAS PROC PLT | EVANS CITY, Butler, PA | Pass | State |
| 2025-05-20 | SNYDER BROS INC/MUSHROOM MINE COMP STA | WORTHINGTON, Armstrong, PA | Pass | State |
| 2025-05-20 | EXPAND OPERATING LLC/MARCUCCI JONES PAD | STEVENSVILLE, Bradford, PA | Pass | State |
| 2025-05-19 | RW GATHERING LLC/MOSHANNON COMP STA | DRIFTING, Clearfield, PA | Pass | State |
| 2025-05-19 | KING, D. PAD 1 — high-priority violation on file | SPRINGVILLE, Susquehanna, PA | Pass | State |
| 2025-05-15 | SNYDER BROS INC/FURNACE RUN COMP STA | ADRIAN, Armstrong, PA | Pass | State |
| 2025-05-15 | SNYDER BROS INC/ENSIGN COMPRESSOR STATION | FREEPORT, Armstrong, PA | Pass | State |
| 2025-05-14 | GREYLOCK MIDSTREAM LLC/KUHL-SKIB COMP STA | JEFFERSON, Greene, PA | Pass | State |
| 2025-05-14 | WILLIAMS FIELD SVC CO/POTTER COMP STA | KINGSLEY, Susquehanna, PA | Pass | State |
| 2025-05-13 | EQUITRANS LP/JEFFERSON COMP STA | LIPPINCOTT, Greene, PA | Pass | State |
| 2025-05-13 | KC MIDSTREAM SOLUTIONS LLC/OVERBEK STA | RIDGWAY, Elk, PA | Pass | State |
| 2025-05-13 | GREYLOCK PRODUCTION LLC/BEACON WELL PAD | WAYNESBURG, Greene, PA | Pass | State |
| 2025-05-12 | MARKWEST LIBERTY MIDSTREAM & RESOURCES/REDD COMP STA | WASHINGTON, Washington, PA | Pass | State |
| 2025-05-12 | EXPAND OPERATING LLC/NR-23 FOUR BUCKS PAD | SUSQUEHANNA, Susquehanna, PA | Pass | State |
| 2025-05-08 | WILLIAMS FIELD SVC CO LLC/MILLER COMP STA | NEW MILFORD, Susquehanna, PA | Pass | State |
| 2025-05-07 | EQUITRANS LP/TRUITTSBURG STA | FAIRMOUNT CITY, Clarion, PA | Pass | State |
| 2025-05-07 | EQM GATHERING OPCO LLC/MAKO COMP STA | AMWELL, Washington, PA | Pass | State |
| 2025-05-07 | EXPAND OPERATING LLC/ RU-13 TONYA EAST PAD | NEW MILFORD, Susquehanna, PA | Pass | State |
| 2025-05-06 | WILLIAMS FIELD SVC CO LLC/HAWLEY COMP STA | MONTROSE, Susquehanna, PA | Pass | State |
| 2025-05-06 | EXPAND OPERATING LLC/GU-VW MCMAHON WELL PAD | STEVENSVILLE, Bradford, PA | Pass | State |
| 2025-05-05 | HILCORP ENERGY CO/PULASKI WHITING CTL FAC — high-priority violation on file | EDINBURG, Lawrence, PA | Fail | State |
| 2025-05-02 | EXPAND OPERATING LLC/CAPPUCCI WELL PAD | MEHOOPANY, Wyoming, PA | Pass | State |
| 2025-05-01 | EASTERN GAS TRANS & STORAGE/RURAL VLY COMP STA | KITTANNING, Armstrong, PA | Pass | State |
| 2025-04-30 | COTERRA ENERGY INC/MEAD B PAD 1 — high-priority violation on file | MONTROSE, Susquehanna, 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.